diff --git a/docs/_quarto.yml b/docs/_quarto.yml index 1817659c9f7e..694ec9cebc92 100644 --- a/docs/_quarto.yml +++ b/docs/_quarto.yml @@ -298,8 +298,6 @@ quartodoc: package: ibis.expr.types.generic - name: Column package: ibis.expr.types.generic - - name: Deferred - package: ibis.common.deferred - name: Scalar package: ibis.expr.types.generic diff --git a/ibis/backends/bigquery/tests/unit/test_compiler.py b/ibis/backends/bigquery/tests/unit/test_compiler.py index 660ee779d800..803233cc1e5e 100644 --- a/ibis/backends/bigquery/tests/unit/test_compiler.py +++ b/ibis/backends/bigquery/tests/unit/test_compiler.py @@ -14,7 +14,7 @@ import ibis.expr.operations as ops from ibis import _ from ibis.backends.sql.compilers import BigQueryCompiler -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError to_sql = ibis.bigquery.compile diff --git a/ibis/backends/clickhouse/tests/test_aggregations.py b/ibis/backends/clickhouse/tests/test_aggregations.py index c9e5bb38c9ad..3954d22dd72f 100644 --- a/ibis/backends/clickhouse/tests/test_aggregations.py +++ b/ibis/backends/clickhouse/tests/test_aggregations.py @@ -7,7 +7,7 @@ import pytest import ibis -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError pytest.importorskip("clickhouse_connect") diff --git a/ibis/backends/duckdb/__init__.py b/ibis/backends/duckdb/__init__.py index 0bdaa57a0f66..8d9aef4be213 100644 --- a/ibis/backends/duckdb/__init__.py +++ b/ibis/backends/duckdb/__init__.py @@ -1640,7 +1640,10 @@ def _register_udf(self, udf_node: ops.ScalarUDF): name = type(udf_node).__name__ type_mapper = self.compiler.type_mapper input_types = [ - type_mapper.to_string(param.annotation.pattern.dtype) + # TODO(kszucs): the data type of the input parameters should be + # retrieved differently rather than relying on the validator + # in the signature + type_mapper.to_string(param.pattern.func.dtype) for param in udf_node.__signature__.parameters.values() ] output_type = type_mapper.to_string(udf_node.dtype) diff --git a/ibis/backends/impala/tests/test_udf.py b/ibis/backends/impala/tests/test_udf.py index 294cb2d2a9c9..ea695f60822f 100644 --- a/ibis/backends/impala/tests/test_udf.py +++ b/ibis/backends/impala/tests/test_udf.py @@ -14,7 +14,7 @@ import ibis.expr.types as ir from ibis import util from ibis.backends.impala import ddl -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError from ibis.expr import rules pytest.importorskip("impala") diff --git a/ibis/backends/impala/tests/test_unary_builtins.py b/ibis/backends/impala/tests/test_unary_builtins.py index 5b1855eb4509..971c1642aa74 100644 --- a/ibis/backends/impala/tests/test_unary_builtins.py +++ b/ibis/backends/impala/tests/test_unary_builtins.py @@ -6,7 +6,7 @@ import ibis import ibis.expr.types as ir from ibis.backends.impala.tests.conftest import translate -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError @pytest.fixture(scope="module") diff --git a/ibis/backends/polars/rewrites.py b/ibis/backends/polars/rewrites.py index 24768b80fd61..def131554472 100644 --- a/ibis/backends/polars/rewrites.py +++ b/ibis/backends/polars/rewrites.py @@ -1,12 +1,11 @@ from __future__ import annotations +from koerce import attribute, replace from public import public import ibis.expr.datatypes as dt import ibis.expr.operations as ops -from ibis.common.annotations import attribute from ibis.common.collections import FrozenDict -from ibis.common.patterns import replace from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.schema import Schema diff --git a/ibis/backends/sql/compilers/base.py b/ibis/backends/sql/compilers/base.py index f8ceaf71f5f3..676c13014f4f 100644 --- a/ibis/backends/sql/compilers/base.py +++ b/ibis/backends/sql/compilers/base.py @@ -11,10 +11,10 @@ import sqlglot as sg import sqlglot.expressions as sge +from koerce import Replace # noqa: TCH002 from public import public import ibis.common.exceptions as com -import ibis.common.patterns as pats import ibis.expr.datatypes as dt import ibis.expr.operations as ops from ibis.backends.sql.rewrites import ( @@ -239,7 +239,7 @@ class SQLGlotCompiler(abc.ABC): agg = AggGen() """A generator for handling aggregate functions""" - rewrites: tuple[type[pats.Replace], ...] = ( + rewrites: tuple[type[Replace], ...] = ( empty_in_values_right_side, add_order_by_to_empty_ranking_window_functions, one_to_zero_index, @@ -247,7 +247,7 @@ class SQLGlotCompiler(abc.ABC): ) """A sequence of rewrites to apply to the expression tree before SQL-specific transforms.""" - post_rewrites: tuple[type[pats.Replace], ...] = () + post_rewrites: tuple[type[Replace], ...] = () """A sequence of rewrites to apply to the expression tree after SQL-specific transforms.""" no_limit_value: sge.Null | None = None @@ -290,7 +290,7 @@ class SQLGlotCompiler(abc.ABC): UNSUPPORTED_OPS: tuple[type[ops.Node], ...] = () """Tuple of operations the backend doesn't support.""" - LOWERED_OPS: dict[type[ops.Node], pats.Replace | None] = { + LOWERED_OPS: dict[type[ops.Node], Replace | None] = { ops.Bucket: lower_bucket, ops.Capitalize: lower_capitalize, ops.Sample: lower_sample, @@ -431,7 +431,7 @@ class SQLGlotCompiler(abc.ABC): # Constructed dynamically in `__init_subclass__` from their respective # UPPERCASE values to handle inheritance, do not modify directly here. extra_supported_ops: ClassVar[frozenset[type[ops.Node]]] = frozenset() - lowered_ops: ClassVar[dict[type[ops.Node], pats.Replace]] = {} + lowered_ops: ClassVar[dict[type[ops.Node], Replace]] = {} def __init__(self) -> None: self.f = FuncGen(copy=self.__class__.copy_func_args) diff --git a/ibis/backends/sql/compilers/bigquery/__init__.py b/ibis/backends/sql/compilers/bigquery/__init__.py index 0e8f3a7d3017..61f651237448 100644 --- a/ibis/backends/sql/compilers/bigquery/__init__.py +++ b/ibis/backends/sql/compilers/bigquery/__init__.py @@ -280,7 +280,7 @@ def _compile_python_udf(self, udf_node: ops.ScalarUDF) -> sge.Create: signature = [ sge.ColumnDef( this=sg.to_identifier(name, quoted=self.quoted), - kind=type_mapper.from_ibis(param.annotation.pattern.dtype), + kind=type_mapper.from_ibis(dt.dtype(param.typehint)), ) for name, param in udf_node.__signature__.parameters.items() ] diff --git a/ibis/backends/sql/compilers/mssql.py b/ibis/backends/sql/compilers/mssql.py index dbb0e3f9fe2c..abd939951063 100644 --- a/ibis/backends/sql/compilers/mssql.py +++ b/ibis/backends/sql/compilers/mssql.py @@ -5,6 +5,7 @@ import sqlglot as sg import sqlglot.expressions as sge +from koerce import var import ibis.common.exceptions as com import ibis.expr.datatypes as dt @@ -26,7 +27,6 @@ replace, split_select_distinct_with_order_by, ) -from ibis.common.deferred import var if TYPE_CHECKING: from collections.abc import Mapping diff --git a/ibis/backends/sql/compilers/mysql.py b/ibis/backends/sql/compilers/mysql.py index 9c2172d48237..5bd31a2b87ca 100644 --- a/ibis/backends/sql/compilers/mysql.py +++ b/ibis/backends/sql/compilers/mysql.py @@ -5,6 +5,7 @@ import sqlglot as sg import sqlglot.expressions as sge +from koerce import replace import ibis.common.exceptions as com import ibis.expr.datatypes as dt @@ -18,7 +19,6 @@ exclude_unsupported_window_frame_from_row_number, rewrite_empty_order_by_window, ) -from ibis.common.patterns import replace from ibis.expr.rewrites import p diff --git a/ibis/backends/sql/compilers/pyspark.py b/ibis/backends/sql/compilers/pyspark.py index 374d72ce143d..fcc3a39bf436 100644 --- a/ibis/backends/sql/compilers/pyspark.py +++ b/ibis/backends/sql/compilers/pyspark.py @@ -7,6 +7,7 @@ import sqlglot as sg import sqlglot.expressions as sge +from koerce import replace import ibis import ibis.common.exceptions as com @@ -21,7 +22,6 @@ p, split_select_distinct_with_order_by, ) -from ibis.common.patterns import replace from ibis.config import options from ibis.expr.operations.udf import InputType from ibis.util import gen_name diff --git a/ibis/backends/sql/rewrites.py b/ibis/backends/sql/rewrites.py index 8d2c7253b336..ec848672995a 100644 --- a/ibis/backends/sql/rewrites.py +++ b/ibis/backends/sql/rewrites.py @@ -8,16 +8,14 @@ from typing import TYPE_CHECKING, Any import toolz +from koerce import Is, Object, Pattern, attribute, replace, var from public import public import ibis.common.exceptions as com import ibis.expr.datatypes as dt import ibis.expr.operations as ops -from ibis.common.annotations import attribute from ibis.common.collections import FrozenDict # noqa: TCH001 -from ibis.common.deferred import var from ibis.common.graph import Graph -from ibis.common.patterns import InstanceOf, Object, Pattern, replace from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.rewrites import d, p, replace_parameter from ibis.expr.schema import Schema @@ -330,7 +328,7 @@ def extract_ctes(node: ops.Relation) -> set[ops.Relation]: cte_types = (Select, ops.Aggregate, ops.JoinChain, ops.Set, ops.Limit, ops.Sample) dont_count = (ops.Field, ops.CountStar, ops.CountDistinctStar) - g = Graph.from_bfs(node, filter=~InstanceOf(dont_count)) + g = Graph.from_bfs(node, filter=~Is(dont_count)) result = set() for op, dependents in g.invert().items(): if isinstance(op, ops.View) or ( @@ -403,7 +401,7 @@ def sqlize( if ctes: def apply_ctes(node, kwargs): - new = node.__recreate__(kwargs) if kwargs else node + new = node.__class__(**kwargs) if kwargs else node return CTE(new) if node in ctes else new result = result.replace(apply_ctes) @@ -454,7 +452,7 @@ def split_select_distinct_with_order_by(_): return _ -@replace(p.WindowFunction(func=p.NTile(y), order_by=())) +@replace(p.WindowFunction(func=p.NTile(+y), order_by=())) def add_order_by_to_empty_ranking_window_functions(_, **kwargs): """Add an ORDER BY clause to rank window functions that don't have one.""" return _.copy(order_by=(y,)) diff --git a/ibis/backends/tests/test_generic.py b/ibis/backends/tests/test_generic.py index fb5c126fb967..4b6859262461 100644 --- a/ibis/backends/tests/test_generic.py +++ b/ibis/backends/tests/test_generic.py @@ -33,7 +33,7 @@ SnowflakeProgrammingError, TrinoUserError, ) -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError np = pytest.importorskip("numpy") pd = pytest.importorskip("pandas") diff --git a/ibis/backends/tests/test_string.py b/ibis/backends/tests/test_string.py index cb51c30aa273..40a24af18226 100644 --- a/ibis/backends/tests/test_string.py +++ b/ibis/backends/tests/test_string.py @@ -17,7 +17,7 @@ PsycoPg2InternalError, PyODBCProgrammingError, ) -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError from ibis.util import gen_name np = pytest.importorskip("numpy") diff --git a/ibis/backends/tests/test_temporal.py b/ibis/backends/tests/test_temporal.py index 9c08d7fe3245..fd300764716c 100644 --- a/ibis/backends/tests/test_temporal.py +++ b/ibis/backends/tests/test_temporal.py @@ -37,7 +37,7 @@ SnowflakeProgrammingError, TrinoUserError, ) -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError from ibis.conftest import IS_SPARK_REMOTE np = pytest.importorskip("numpy") diff --git a/ibis/common/annotations.py b/ibis/common/annotations.py deleted file mode 100644 index fb63baf6de8d..000000000000 --- a/ibis/common/annotations.py +++ /dev/null @@ -1,653 +0,0 @@ -from __future__ import annotations - -import functools -import inspect -import types -from typing import TYPE_CHECKING -from typing import Any as AnyType - -from typing_extensions import Self - -from ibis.common.bases import Immutable, Slotted -from ibis.common.patterns import ( - Any, - FrozenDictOf, - NoMatch, - Option, - Pattern, - TupleOf, -) -from ibis.common.patterns import pattern as ensure_pattern -from ibis.common.typing import format_typehint, get_type_hints - -if TYPE_CHECKING: - from collections.abc import Callable, Sequence - -EMPTY = inspect.Parameter.empty # marker for missing argument -KEYWORD_ONLY = inspect.Parameter.KEYWORD_ONLY -POSITIONAL_ONLY = inspect.Parameter.POSITIONAL_ONLY -POSITIONAL_OR_KEYWORD = inspect.Parameter.POSITIONAL_OR_KEYWORD -VAR_KEYWORD = inspect.Parameter.VAR_KEYWORD -VAR_POSITIONAL = inspect.Parameter.VAR_POSITIONAL - - -_any = Any() - - -class ValidationError(Exception): - __slots__ = () - - -class AttributeValidationError(ValidationError): - __slots__ = ("name", "value", "pattern") - - def __init__(self, name: str, value: AnyType, pattern: Pattern): - self.name = name - self.value = value - self.pattern = pattern - - def __str__(self): - return f"Failed to validate attribute `{self.name}`: {self.value!r} is not {self.pattern.describe()}" - - -class ReturnValidationError(ValidationError): - __slots__ = ("func", "value", "pattern") - - def __init__(self, func: Callable, value: AnyType, pattern: Pattern): - self.func = func - self.value = value - self.pattern = pattern - - def __str__(self): - return f"Failed to validate return value of `{self.func.__name__}`: {self.value!r} is not {self.pattern.describe()}" - - -class SignatureValidationError(ValidationError): - __slots__ = ("msg", "sig", "func", "args", "kwargs", "errors") - - def __init__( - self, - msg: str, - sig: Signature, - func: Callable, - args: tuple[AnyType, ...], - kwargs: dict[str, AnyType], - errors: Sequence[tuple[str, AnyType, Pattern]] = (), - ): - self.msg = msg - self.sig = sig - self.func = func - self.args = args - self.kwargs = kwargs - self.errors = errors - - def __str__(self): - args = tuple(repr(arg) for arg in self.args) - args += tuple(f"{k}={v!r}" for k, v in self.kwargs.items()) - call = f"{self.func.__name__}({', '.join(args)})" - - errors = "" - for name, value, pattern in self.errors: - errors += f"\n `{name}`: {value!r} is not {pattern.describe()}" - - sig = f"{self.func.__name__}{self.sig}" - cause = str(self.__cause__) if self.__cause__ else "" - - return self.msg.format(sig=sig, call=call, cause=cause, errors=errors) - - -class Annotation(Slotted, Immutable): - """Base class for all annotations. - - Annotations are used to mark fields in a class and to validate them. - """ - - __slots__ = ("pattern", "default") - pattern: Pattern - default: AnyType - - def validate(self, name: str, value: AnyType, this: AnyType) -> AnyType: - """Validate the field. - - Parameters - ---------- - name - The name of the attribute. - value - The value of the attribute. - this - The instance of the class the attribute is defined on. - - Returns - ------- - The validated value for the field. - - """ - result = self.pattern.match(value, this) - if result is NoMatch: - raise AttributeValidationError( - name=name, - value=value, - pattern=self.pattern, - ) - return result - - -class Attribute(Annotation): - """Annotation to mark a field in a class. - - An optional pattern can be provider to validate the field every time it - is set. - - Parameters - ---------- - pattern : Pattern, default noop - Pattern to validate the field. - default : Callable, default EMPTY - Callable to compute the default value of the field. - - """ - - def __init__(self, pattern: Pattern = _any, default: AnyType = EMPTY): - super().__init__(pattern=ensure_pattern(pattern), default=default) - - def has_default(self): - """Check if the field has a default value. - - Returns - ------- - bool - - """ - return self.default is not EMPTY - - def get_default(self, name: str, this: AnyType) -> AnyType: - """Get the default value of the field. - - Parameters - ---------- - name - The name of the attribute. - this - The instance of the class the attribute is defined on. - - Returns - ------- - The default value for the field. - - """ - if callable(self.default): - value = self.default(this) - else: - value = self.default - return self.validate(name, value, this) - - def __call__(self, default): - """Needed to support the decorator syntax.""" - return self.__class__(self.pattern, default) - - -class Argument(Annotation): - """Annotation type for all fields which should be passed as arguments. - - Parameters - ---------- - pattern - Optional pattern to validate the argument. - default - Optional default value of the argument. - typehint - Optional typehint of the argument. - kind - Kind of the argument, one of `inspect.Parameter` constants. - Defaults to positional or keyword. - - """ - - __slots__ = ("typehint", "kind") - typehint: AnyType - kind: int - - def __init__( - self, - pattern: Pattern = _any, - default: AnyType = EMPTY, - typehint: type | None = None, - kind: int = POSITIONAL_OR_KEYWORD, - ): - super().__init__( - pattern=ensure_pattern(pattern), - default=default, - typehint=typehint, - kind=kind, - ) - - -def attribute(pattern=_any, default=EMPTY): - """Annotation to mark a field in a class.""" - if default is EMPTY and isinstance(pattern, (types.FunctionType, types.MethodType)): - return Attribute(default=pattern) - else: - return Attribute(pattern, default=default) - - -def argument(pattern=_any, default=EMPTY, typehint=None): - """Annotation type for all fields which should be passed as arguments.""" - return Argument(pattern, default=default, typehint=typehint) - - -def optional(pattern=_any, default=None, typehint=None): - """Annotation to allow and treat `None` values as missing arguments.""" - if pattern is None: - pattern = Option(Any(), default=default) - else: - pattern = Option(pattern, default=default) - return Argument(pattern, default=None, typehint=typehint) - - -def varargs(pattern=_any, typehint=None): - """Annotation to mark a variable length positional arguments.""" - return Argument(TupleOf(pattern), kind=VAR_POSITIONAL, typehint=typehint) - - -def varkwargs(pattern=_any, typehint=None): - """Annotation to mark a variable length keyword arguments.""" - return Argument(FrozenDictOf(_any, pattern), kind=VAR_KEYWORD, typehint=typehint) - - -class Parameter(inspect.Parameter): - """Augmented Parameter class to additionally hold a pattern object.""" - - __slots__ = () - - def __str__(self): - formatted = self._name - - if self._annotation is not EMPTY: - typehint = format_typehint(self._annotation.typehint) - formatted = f"{formatted}: {typehint}" - - if self._default is not EMPTY: - if self._annotation is not EMPTY: - formatted = f"{formatted} = {self._default!r}" - else: - formatted = f"{formatted}={self._default!r}" - - if self._kind == VAR_POSITIONAL: - formatted = "*" + formatted - elif self._kind == VAR_KEYWORD: - formatted = "**" + formatted - - return formatted - - @classmethod - def from_argument(cls, name: str, annotation: Argument) -> Self: - """Construct a Parameter from an Argument annotation.""" - if not isinstance(annotation, Argument): - raise TypeError( - f"annotation must be an instance of Argument, got {annotation}" - ) - return cls( - name, - kind=annotation.kind, - default=annotation.default, - annotation=annotation, - ) - - -class Signature(inspect.Signature): - """Validatable signature. - - Primarily used in the implementation of `ibis.common.grounds.Annotable`. - """ - - __slots__ = () - - @classmethod - def merge(cls, *signatures, **annotations): - """Merge multiple signatures. - - In addition to concatenating the parameters, it also reorders the - parameters so that optional arguments come after mandatory arguments. - - Parameters - ---------- - *signatures : Signature - Signature instances to merge. - **annotations : dict - Annotations to add to the merged signature. - - Returns - ------- - Signature - - """ - params = {} - for sig in signatures: - params.update(sig.parameters) - - inherited = set(params.keys()) - for name, annot in annotations.items(): - params[name] = Parameter.from_argument(name, annotation=annot) - - # mandatory fields without default values must precede the optional - # ones in the function signature, the partial ordering will be kept - var_args, var_kwargs = [], [] - new_args, new_kwargs = [], [] - old_args, old_kwargs = [], [] - - for name, param in params.items(): - if param.kind == VAR_POSITIONAL: - if var_args: - raise TypeError("only one variadic *args parameter is allowed") - var_args.append(param) - elif param.kind == VAR_KEYWORD: - if var_kwargs: - raise TypeError("only one variadic **kwargs parameter is allowed") - var_kwargs.append(param) - elif name in inherited: - if param.default is EMPTY: - old_args.append(param) - else: - old_kwargs.append(param) - elif param.default is EMPTY: - new_args.append(param) - else: - new_kwargs.append(param) - - return cls( - old_args + new_args + var_args + new_kwargs + old_kwargs + var_kwargs - ) - - @classmethod - def from_callable(cls, fn, patterns=None, return_pattern=None): - """Create a validateable signature from a callable. - - Parameters - ---------- - fn : Callable - Callable to create a signature from. - patterns : list or dict, default None - Pass patterns to add missing or override existing argument type - annotations. - return_pattern : Pattern, default None - Pattern for the return value of the callable. - - Returns - ------- - Signature - - """ - sig = super().from_callable(fn) - typehints = get_type_hints(fn) - - if patterns is None: - patterns = {} - elif isinstance(patterns, (list, tuple)): - # create a mapping of parameter name to pattern - patterns = dict(zip(sig.parameters.keys(), patterns)) - elif not isinstance(patterns, dict): - raise TypeError(f"patterns must be a list or dict, got {type(patterns)}") - - parameters = [] - for param in sig.parameters.values(): - name = param.name - kind = param.kind - default = param.default - typehint = typehints.get(name) - - if name in patterns: - pattern = patterns[name] - elif typehint is not None: - pattern = Pattern.from_typehint(typehint) - else: - pattern = _any - - if kind is VAR_POSITIONAL: - annot = varargs(pattern, typehint=typehint) - elif kind is VAR_KEYWORD: - annot = varkwargs(pattern, typehint=typehint) - else: - annot = Argument(pattern, kind=kind, default=default, typehint=typehint) - - parameters.append(Parameter.from_argument(param.name, annot)) - - if return_pattern is not None: - return_annotation = return_pattern - elif (typehint := typehints.get("return")) is not None: - return_annotation = Pattern.from_typehint(typehint) - else: - return_annotation = EMPTY - - return cls(parameters, return_annotation=return_annotation) - - def unbind(self, this: dict[str, Any]) -> tuple[tuple[Any, ...], dict[str, Any]]: - """Reverse bind of the parameters. - - Attempts to reconstructs the original arguments as keyword only arguments. - - Parameters - ---------- - this : Any - Object with attributes matching the signature parameters. - - Returns - ------- - args : (args, kwargs) - Tuple of positional and keyword arguments. - - """ - # does the reverse of bind, but doesn't apply defaults - args: list = [] - kwargs: dict = {} - for name, param in self.parameters.items(): - value = this[name] - if param.kind is POSITIONAL_OR_KEYWORD: - args.append(value) - elif param.kind is VAR_POSITIONAL: - args.extend(value) - elif param.kind is VAR_KEYWORD: - kwargs.update(value) - elif param.kind is KEYWORD_ONLY: - kwargs[name] = value - elif param.kind is POSITIONAL_ONLY: - args.append(value) - else: - raise TypeError(f"unsupported parameter kind {param.kind}") - return tuple(args), kwargs - - def validate(self, func, args, kwargs): - """Validate the arguments against the signature. - - Parameters - ---------- - func : Callable - Callable to validate the arguments for. - args : tuple - Positional arguments. - kwargs : dict - Keyword arguments. - - Returns - ------- - validated : dict - Dictionary of validated arguments. - - """ - try: - bound = self.bind(*args, **kwargs) - bound.apply_defaults() - except TypeError as err: - raise SignatureValidationError( - "{call} {cause}\n\nExpected signature: {sig}", - sig=self, - func=func, - args=args, - kwargs=kwargs, - ) from err - - this, errors = {}, [] - for name, value in bound.arguments.items(): - param = self.parameters[name] - pattern = param.annotation.pattern - - result = pattern.match(value, this) - if result is NoMatch: - errors.append((name, value, pattern)) - else: - this[name] = result - - if errors: - raise SignatureValidationError( - "{call} has failed due to the following errors:{errors}\n\nExpected signature: {sig}", - sig=self, - func=func, - args=args, - kwargs=kwargs, - errors=errors, - ) - - return this - - def validate_nobind(self, func, kwargs): - """Validate the arguments against the signature without binding.""" - this, errors = {}, [] - for name, param in self.parameters.items(): - value = kwargs.get(name, param.default) - if value is EMPTY: - raise TypeError(f"missing required argument `{name!r}`") - - pattern = param.annotation.pattern - result = pattern.match(value, this) - if result is NoMatch: - errors.append((name, value, pattern)) - else: - this[name] = result - - if errors: - raise SignatureValidationError( - "{call} has failed due to the following errors:{errors}\n\nExpected signature: {sig}", - sig=self, - func=func, - args=(), - kwargs=kwargs, - errors=errors, - ) - - return this - - def validate_return(self, func, value): - """Validate the return value of a function. - - Parameters - ---------- - func : Callable - Callable to validate the return value for. - value : Any - Return value of the function. - - Returns - ------- - validated : Any - Validated return value. - - """ - if self.return_annotation is EMPTY: - return value - - result = self.return_annotation.match(value, {}) - if result is NoMatch: - raise ReturnValidationError( - func=func, - value=value, - pattern=self.return_annotation, - ) - - return result - - -def annotated(_1=None, _2=None, _3=None, **kwargs): - """Create functions with arguments validated at runtime. - - There are various ways to apply this decorator: - - 1. With type annotations - - >>> @annotated - ... def foo(x: int, y: str) -> float: - ... return float(x) + float(y) - - 2. With argument patterns passed as keyword arguments - - >>> from ibis.common.patterns import InstanceOf as instance_of - >>> @annotated(x=instance_of(int), y=instance_of(str)) - ... def foo(x, y): - ... return float(x) + float(y) - - 3. With mixing type annotations and patterns where the latter takes precedence - - >>> @annotated(x=instance_of(float)) - ... def foo(x: int, y: str) -> float: - ... return float(x) + float(y) - - 4. With argument patterns passed as a list and/or an optional return pattern - - >>> @annotated([instance_of(int), instance_of(str)], instance_of(float)) - ... def foo(x, y): - ... return float(x) + float(y) - - Parameters - ---------- - *args : Union[ - tuple[Callable], - tuple[list[Pattern], Callable], - tuple[list[Pattern], Pattern, Callable] - ] - Positional arguments. - - If a single callable is passed, it's wrapped with the signature - - If two arguments are passed, the first one is a list of patterns for the - arguments and the second one is the callable to wrap - - If three arguments are passed, the first one is a list of patterns for the - arguments, the second one is a pattern for the return value and the third - one is the callable to wrap - **kwargs : dict[str, Pattern] - Patterns for the arguments. - - Returns - ------- - Callable - - """ - if _1 is None: - return functools.partial(annotated, **kwargs) - elif _2 is None: - if callable(_1): - func, patterns, return_pattern = _1, None, None - else: - return functools.partial(annotated, _1, **kwargs) - elif _3 is None: - if not isinstance(_2, Pattern): - func, patterns, return_pattern = _2, _1, None - else: - return functools.partial(annotated, _1, _2, **kwargs) - else: - func, patterns, return_pattern = _3, _1, _2 - - sig = Signature.from_callable( - func, patterns=patterns or kwargs, return_pattern=return_pattern - ) - - @functools.wraps(func) - def wrapped(*args, **kwargs): - # 1. Validate the passed arguments - values = sig.validate(func, args, kwargs) - # 2. Reconstruction of the original arguments - args, kwargs = sig.unbind(values) - # 3. Call the function with the validated arguments - result = func(*args, **kwargs) - # 4. Validate the return value - return sig.validate_return(func, result) - - wrapped.__signature__ = sig - - return wrapped diff --git a/ibis/common/bases.py b/ibis/common/bases.py deleted file mode 100644 index b49adc4cb2ca..000000000000 --- a/ibis/common/bases.py +++ /dev/null @@ -1,244 +0,0 @@ -from __future__ import annotations - -import collections.abc -from abc import abstractmethod -from typing import TYPE_CHECKING, Any -from weakref import WeakValueDictionary - -if TYPE_CHECKING: - from collections.abc import Mapping - - from typing_extensions import Self - - -class AbstractMeta(type): - """Base metaclass for many of the ibis core classes. - - Enforce the subclasses to define a `__slots__` attribute and provide a - `__create__` classmethod to change the instantiation behavior of the class. - - Support abstract methods without extending `abc.ABCMeta`. While it provides - a reduced feature set compared to `abc.ABCMeta` (no way to register virtual - subclasses) but avoids expensive instance checks by enforcing explicit - subclassing. - """ - - __slots__ = () - - def __new__(metacls, clsname, bases, dct, **kwargs): - # enforce slot definitions - dct.setdefault("__slots__", ()) - - # construct the class object - cls = super().__new__(metacls, clsname, bases, dct, **kwargs) - - # calculate abstract methods existing in the class - abstracts = { - name - for name, value in dct.items() - if getattr(value, "__isabstractmethod__", False) - } - for parent in bases: - for name in getattr(parent, "__abstractmethods__", set()): - value = getattr(cls, name, None) - if getattr(value, "__isabstractmethod__", False): - abstracts.add(name) - - # set the abstract methods for the class - cls.__abstractmethods__ = frozenset(abstracts) - - return cls - - def __call__(cls, *args, **kwargs): - """Create a new instance of the class. - - The subclass may override the `__create__` classmethod to change the - instantiation behavior. This is similar to overriding the `__new__` - method, but without conditionally calling the `__init__` based on the - return type. - - Parameters - ---------- - args : tuple - Positional arguments eventually passed to the `__init__` method. - kwargs : dict - Keyword arguments eventually passed to the `__init__` method. - - Returns - ------- - The newly created instance of the class. No extra initialization - - """ - return cls.__create__(*args, **kwargs) - - -class Abstract(metaclass=AbstractMeta): - """Base class for many of the ibis core classes, see `AbstractMeta`.""" - - __slots__ = ("__weakref__",) - __create__ = classmethod(type.__call__) # type: ignore - - -class Immutable(Abstract): - """Prohibit attribute assignment on the instance.""" - - def __copy__(self): - return self - - def __deepcopy__(self, memo): - return self - - def __setattr__(self, name: str, _: Any) -> None: - raise AttributeError( - f"Attribute {name!r} cannot be assigned to immutable instance of " - f"type {type(self)}" - ) - - -class Singleton(Abstract): - """Cache instances of the class based on instantiation arguments.""" - - __instances__: Mapping[Any, Self] = WeakValueDictionary() - - @classmethod - def __create__(cls, *args, **kwargs): - key = (cls, args, tuple(kwargs.items())) - try: - return cls.__instances__[key] - except KeyError: - instance = super().__create__(*args, **kwargs) - cls.__instances__[key] = instance - return instance - - -class Final(Abstract): - """Prohibit subclassing.""" - - def __init_subclass__(cls, **kwargs): - super().__init_subclass__(**kwargs) - cls.__init_subclass__ = cls.__prohibit_inheritance__ - - @classmethod - def __prohibit_inheritance__(cls, **kwargs): - raise TypeError(f"Cannot inherit from final class {cls}") - - -@collections.abc.Hashable.register -class Hashable(Abstract): - @abstractmethod - def __hash__(self) -> int: ... - - -class Comparable(Abstract): - """Enable quick equality comparisons. - - The subclasses must implement the `__equals__` method that returns a boolean - value indicating whether the two instances are equal. This method is called - only if the two instances are of the same type and the result is cached for - future comparisons. - - Since the class holds a global cache of comparison results, it is important - to make sure that the instances are not kept alive longer than necessary. - """ - - __cache__ = {} - - @abstractmethod - def __equals__(self, other) -> bool: ... - - def __eq__(self, other) -> bool: - if self is other: - return True - - # type comparison should be cheap - if type(self) is not type(other): - return False - - id1 = id(self) - id2 = id(other) - try: - return self.__cache__[id1][id2] - except KeyError: - result = self.__equals__(other) - self.__cache__.setdefault(id1, {})[id2] = result - self.__cache__.setdefault(id2, {})[id1] = result - return result - - def __del__(self): - id1 = id(self) - for id2 in self.__cache__.pop(id1, ()): - eqs2 = self.__cache__[id2] - del eqs2[id1] - if not eqs2: - del self.__cache__[id2] - - -class SlottedMeta(AbstractMeta): - def __new__(metacls, clsname, bases, dct, **kwargs): - fields = dct.get("__fields__", dct.get("__slots__", ())) - inherited = (getattr(base, "__fields__", ()) for base in bases) - dct["__fields__"] = sum(inherited, ()) + fields - return super().__new__(metacls, clsname, bases, dct, **kwargs) - - -class Slotted(Abstract, metaclass=SlottedMeta): - """A lightweight alternative to `ibis.common.grounds.Annotable`. - - The class is mostly used to reduce boilerplate code. - """ - - def __init__(self, **kwargs) -> None: - for field in self.__fields__: - object.__setattr__(self, field, kwargs[field]) - - def __eq__(self, other) -> bool: - if self is other: - return True - if type(self) is not type(other): - return NotImplemented - return all(getattr(self, n) == getattr(other, n) for n in self.__fields__) - - def __getstate__(self): - return {k: getattr(self, k) for k in self.__fields__} - - def __setstate__(self, state): - for name, value in state.items(): - object.__setattr__(self, name, value) - - def __repr__(self): - fields = {k: getattr(self, k) for k in self.__fields__} - fieldstring = ", ".join(f"{k}={v!r}" for k, v in fields.items()) - return f"{self.__class__.__name__}({fieldstring})" - - def __rich_repr__(self): - for name in self.__fields__: - yield name, getattr(self, name) - - -class FrozenSlotted(Slotted, Immutable, Hashable): - """A lightweight alternative to `ibis.common.grounds.Concrete`. - - This class is used to create immutable dataclasses with slots and a precomputed - hash value for quicker dictionary lookups. - """ - - __slots__ = ("__precomputed_hash__",) - __fields__ = () - __precomputed_hash__: int - - def __init__(self, **kwargs) -> None: - values = [] - for field in self.__fields__: - values.append(value := kwargs[field]) - object.__setattr__(self, field, value) - hashvalue = hash((self.__class__, tuple(values))) - object.__setattr__(self, "__precomputed_hash__", hashvalue) - - def __setstate__(self, state): - for name, value in state.items(): - object.__setattr__(self, name, value) - hashvalue = hash((self.__class__, tuple(state.values()))) - object.__setattr__(self, "__precomputed_hash__", hashvalue) - - def __hash__(self) -> int: - return self.__precomputed_hash__ diff --git a/ibis/common/caching.py b/ibis/common/caching.py deleted file mode 100644 index 1dc89bd1330a..000000000000 --- a/ibis/common/caching.py +++ /dev/null @@ -1,24 +0,0 @@ -from __future__ import annotations - -import functools -from typing import TYPE_CHECKING - -if TYPE_CHECKING: - from collections.abc import Callable - - -def memoize(func: Callable) -> Callable: - """Memoize a function.""" - cache: dict = {} - - @functools.wraps(func) - def wrapper(*args, **kwargs): - key = (args, tuple(kwargs.items())) - try: - return cache[key] - except KeyError: - result = func(*args, **kwargs) - cache[key] = result - return result - - return wrapper diff --git a/ibis/common/collections.py b/ibis/common/collections.py index 31de94dac372..d835bade5a5a 100644 --- a/ibis/common/collections.py +++ b/ibis/common/collections.py @@ -2,12 +2,11 @@ import collections.abc from abc import abstractmethod -from itertools import tee from typing import TYPE_CHECKING, Any, Generic, TypeVar +from koerce import AbstractMeta from public import public -from ibis.common.bases import Abstract, Hashable from ibis.common.exceptions import ConflictingValuesError if TYPE_CHECKING: @@ -17,14 +16,8 @@ V = TypeVar("V") -# The following classes provide an alternative to the `collections.abc` module -# which can be used with `ibis.common.bases` without metaclass conflicts but -# remains compatible with the `collections.abc` module. The main advantage is -# faster `isinstance` checks. - - @collections.abc.Iterable.register -class Iterable(Abstract, Generic[V]): +class Iterable(Generic[V], metaclass=AbstractMeta): """Iterable abstract base class for quicker isinstance checks.""" @abstractmethod @@ -51,7 +44,7 @@ def __iter__(self): @collections.abc.Sized.register -class Sized(Abstract): +class Sized(metaclass=AbstractMeta): """Sized abstract base class for quicker isinstance checks.""" @abstractmethod @@ -59,7 +52,7 @@ def __len__(self): ... @collections.abc.Container.register -class Container(Abstract, Generic[V]): +class Container(Generic[V], metaclass=AbstractMeta): """Container abstract base class for quicker isinstance checks.""" @abstractmethod @@ -151,6 +144,51 @@ def __eq__(self, other): return dict(self.items()) == dict(other.items()) +@public +class FrozenDict(dict[K, V], Mapping[K, V]): + __slots__ = ("__precomputed_hash__",) + # TODO(kszucs): Annotable is the base class, so traditional typehint is not allowed + # __precomputed_hash__: int + + def __init__(self, *args, **kwargs): + super().__init__(*args, **kwargs) + hashable = frozenset(self.items()) + object.__setattr__(self, "__precomputed_hash__", hash(hashable)) + + def __hash__(self) -> int: + return self.__precomputed_hash__ + + def __setitem__(self, key: K, value: V) -> None: + raise TypeError( + f"'{self.__class__.__name__}' object does not support item assignment" + ) + + def __setattr__(self, name: str, _: Any) -> None: + raise TypeError(f"Attribute {name!r} cannot be assigned to frozendict") + + def __reduce__(self) -> tuple: + return (self.__class__, (dict(self),)) + + +@public +class FrozenOrderedDict(FrozenDict[K, V]): + def __init__(self, *args, **kwargs): + super(FrozenDict, self).__init__(*args, **kwargs) + hashable = tuple(self.items()) + object.__setattr__(self, "__precomputed_hash__", hash(hashable)) + + def __hash__(self) -> int: + return self.__precomputed_hash__ + + def __eq__(self, other: Any) -> bool: + if not isinstance(other, collections.abc.Mapping): + return NotImplemented + return tuple(self.items()) == tuple(other.items()) + + def __ne__(self, other: Any) -> bool: + return not self == other + + @public class MapSet(Mapping[K, V]): """A mapping that also supports set-like operations. @@ -276,93 +314,250 @@ def isdisjoint(self, other: collections.abc.Mapping) -> bool: return not common_keys -@public -class FrozenDict(dict, Mapping[K, V], Hashable): - __slots__ = ("__precomputed_hash__",) - __precomputed_hash__: int - - def __init__(self, *args, **kwargs): - super().__init__(*args, **kwargs) - hashable = frozenset(self.items()) - object.__setattr__(self, "__precomputed_hash__", hash(hashable)) - - def __hash__(self) -> int: - return self.__precomputed_hash__ - - def __setitem__(self, key: K, value: V) -> None: - raise TypeError( - f"'{self.__class__.__name__}' object does not support item assignment" - ) - - def __setattr__(self, name: str, _: Any) -> None: - raise TypeError(f"Attribute {name!r} cannot be assigned to frozendict") - - def __reduce__(self) -> tuple: - return (self.__class__, (dict(self),)) - - -@public -class FrozenOrderedDict(FrozenDict[K, V]): - def __init__(self, *args, **kwargs): - super(FrozenDict, self).__init__(*args, **kwargs) - hashable = tuple(self.items()) - object.__setattr__(self, "__precomputed_hash__", hash(hashable)) - - def __hash__(self) -> int: - return self.__precomputed_hash__ - - def __eq__(self, other: Any) -> bool: - if not isinstance(other, collections.abc.Mapping): - return NotImplemented - return tuple(self.items()) == tuple(other.items()) - - def __ne__(self, other: Any) -> bool: - return not self == other +class DisjointSet(Mapping[K, set[K]]): + """Disjoint set data structure. + Also known as union-find data structure. It is a data structure that keeps + track of a set of elements partitioned into a number of disjoint (non-overlapping) + subsets. It provides near-constant-time operations to add new sets, to merge + existing sets, and to determine whether elements are in the same set. -class RewindableIterator(Iterator[V]): - """Iterator that can be rewound to a checkpoint. + Parameters + ---------- + data : + Initial data to add to the disjoint set. Examples -------- - >>> it = RewindableIterator(range(5)) - >>> next(it) - 0 - >>> next(it) + >>> ds = DisjointSet() + >>> ds.add(1) 1 - >>> it.checkpoint() - >>> next(it) + >>> ds.add(2) 2 - >>> next(it) + >>> ds.add(3) 3 - >>> it.rewind() - >>> next(it) - 2 - >>> next(it) - 3 - >>> next(it) - 4 + >>> ds.union(1, 2) + True + >>> ds.union(2, 3) + True + >>> ds.find(1) + 1 + >>> ds.find(2) + 1 + >>> ds.find(3) + 1 + >>> ds.union(1, 3) + False """ - __slots__ = ("_iterator", "_checkpoint") - - def __init__(self, iterable): - self._iterator = iter(iterable) - self._checkpoint = None - - def __next__(self): - return next(self._iterator) - - def rewind(self): - """Rewind the iterator to the last checkpoint.""" - if self._checkpoint is None: - raise ValueError("No checkpoint to rewind to.") - self._iterator, self._checkpoint = tee(self._checkpoint) + __slots__ = ("_parents", "_classes") + _parents: dict + _classes: dict + + def __init__(self, data: Iterable[K] | None = None): + self._parents = {} + self._classes = {} + if data is not None: + for id in data: + self.add(id) + + def __contains__(self, id) -> bool: + """Check if the given id is in the disjoint set. + + Parameters + ---------- + id : + The id to check. + + Returns + ------- + ined: + True if the id is in the disjoint set, False otherwise. + + """ + return id in self._parents + + def __getitem__(self, id) -> set[K]: + """Get the set of ids that are in the same class as the given id. + + Parameters + ---------- + id : + The id to get the class for. + + Returns + ------- + class: + The set of ids that are in the same class as the given id, including + the given id. + + """ + id = self._parents[id] + return self._classes[id] + + def __iter__(self) -> Iterator[K]: + """Iterate over the ids in the disjoint set.""" + return iter(self._parents) + + def __len__(self) -> int: + """Get the number of ids in the disjoint set.""" + return len(self._parents) + + def __eq__(self, other: object) -> bool: + """Check if the disjoint set is equal to another disjoint set. + + Parameters + ---------- + other : + The other disjoint set to compare to. + + Returns + ------- + equal: + True if the disjoint sets are equal, False otherwise. + + """ + if not isinstance(other, DisjointSet): + return NotImplemented + return self._parents == other._parents + + def copy(self) -> DisjointSet: + """Make a copy of the disjoint set. + + Returns + ------- + copy: + A copy of the disjoint set. + + """ + ds = DisjointSet() + ds._parents = self._parents.copy() + ds._classes = self._classes.copy() + return ds + + def add(self, id: K) -> K: + """Add a new id to the disjoint set. + + If the id is not in the disjoint set, it will be added to the disjoint set + along with a new class containing only the given id. + + Parameters + ---------- + id : + The id to add to the disjoint set. + + Returns + ------- + id: + The id that was added to the disjoint set. + + """ + if id in self._parents: + return self._parents[id] + self._parents[id] = id + self._classes[id] = {id} + return id + + def find(self, id: K) -> K: + """Find the root of the class that the given id is in. + + Also called as the canonicalized id or the representative id. + + Parameters + ---------- + id : + The id to find the canonicalized id for. + + Returns + ------- + id: + The canonicalized id for the given id. + + """ + return self._parents[id] + + def union(self, id1, id2) -> bool: + """Merge the classes that the given ids are in. + + If the ids are already in the same class, this will return False. Otherwise + it will merge the classes and return True. + + Parameters + ---------- + id1 : + The first id to merge the classes for. + id2 : + The second id to merge the classes for. + + Returns + ------- + merged: + True if the classes were merged, False otherwise. + + """ + # Find the root of each class + id1 = self._parents[id1] + id2 = self._parents[id2] + if id1 == id2: + return False - def checkpoint(self): - """Create a checkpoint of the current iterator state.""" - self._iterator, self._checkpoint = tee(self._iterator) + # Merge the smaller eclass into the larger one, aka. union-find by size + class1 = self._classes[id1] + class2 = self._classes[id2] + if len(class1) >= len(class2): + id1, id2 = id2, id1 + class1, class2 = class2, class1 + + # Update the parent pointers, this is called path compression but done + # during the union operation to keep the find operation minimal + for id in class1: + self._parents[id] = id2 + + # Do the actual merging and clear the other eclass + class2 |= class1 + class1.clear() + + return True + + def connected(self, id1, id2): + """Check if the given ids are in the same class. + + True if both ids have the same canonicalized id, False otherwise. + + Parameters + ---------- + id1 : + The first id to check. + id2 : + The second id to check. + + Returns + ------- + connected: + True if the ids are connected, False otherwise. + + """ + return self._parents[id1] == self._parents[id2] + + def verify(self): + """Verify that the disjoint set is not corrupted. + + Check that each id's canonicalized id's class. In general corruption + should not happen if the public API is used, but this is a sanity check + to make sure that the internal data structures are not corrupted. + + Returns + ------- + verified: + True if the disjoint set is not corrupted, False otherwise. + + """ + for id in self._parents: + if id not in self._classes[self._parents[id]]: + raise RuntimeError( + f"DisjointSet is corrupted: {id} is not in its class" + ) # Need to provide type hint as else a static type checker does not recognize diff --git a/ibis/common/deferred.py b/ibis/common/deferred.py index 81030ec88b6b..acbcb6ee61c5 100644 --- a/ibis/common/deferred.py +++ b/ibis/common/deferred.py @@ -1,621 +1,12 @@ from __future__ import annotations -import collections.abc -import functools -import inspect -import operator -from abc import abstractmethod -from collections.abc import Callable -from typing import Any, TypeVar, overload +from koerce import Deferred, Var -from ibis.common.bases import Final, FrozenSlotted, Hashable, Immutable, Slotted -from ibis.common.collections import FrozenDict -from ibis.common.typing import Coercible, CoercionError -from ibis.util import PseudoHashable - - -class Resolver(Coercible, Hashable): - """Specification about constructing a value given a context. - - The context is a dictionary that contains all the captured values and - information relevant for the builder. - - The builder is used in the right hand side of the replace pattern: - `Replace(pattern, builder)`. Semantically when a match occurs for the - replace pattern, the builder is called with the context and the result - of the builder is used as the replacement value. - """ - - @abstractmethod - def resolve(self, context: dict): - """Construct a new object from the context. - - Parameters - ---------- - context - A dictionary containing all the captured values and information - relevant for the deferred. - - Returns - ------- - The constructed object. - - """ - - @abstractmethod - def __eq__(self, other: Resolver) -> bool: ... - - @classmethod - def __coerce__(cls, value): - if isinstance(value, cls): - return value - elif isinstance(value, Deferred): - return value._resolver - else: - raise CoercionError( - f"Cannot coerce {type(value).__name__!r} to {cls.__name__!r}" - ) - - -class Deferred(Slotted, Immutable, Final): - """The user facing wrapper object providing syntactic sugar for deferreds. - - Provides a natural-like syntax for constructing deferred expressions by - overloading all of the available dunder methods including the equality - operator. - - Its sole purpose is to provide a nicer syntax for constructing deferred - expressions, thus it gets unwrapped to the underlying deferred expression - when used by the rest of the library. - - Parameters - ---------- - obj - The deferred object to provide syntax sugar for. - repr - An optional fixed string to use when repr-ing the deferred expression, - instead of the default. This is useful for complex deferred expressions - where the arguments don't necessarily make sense to be user facing in - the repr. - - """ - - __slots__ = ("_resolver", "_repr") - - def __init__(self, obj, repr=None): - super().__init__(_resolver=resolver(obj), _repr=repr) - - # TODO(kszucs): consider to make this method protected - def resolve(self, _=None, **kwargs): - context = {"_": _, **kwargs} - return self._resolver.resolve(context) - - def __repr__(self): - return repr(self._resolver) if self._repr is None else self._repr - - def __getattr__(self, name): - return Deferred(Attr(self, name)) - - def __iter__(self): - raise TypeError(f"{self.__class__.__name__!r} object is not iterable") - - def __bool__(self): - raise TypeError( - f"The truth value of {self.__class__.__name__} objects is not defined" - ) - - def __getitem__(self, name): - return Deferred(Item(self, name)) - - def __call__(self, *args, **kwargs): - return Deferred(Call(self, *args, **kwargs)) - - def __invert__(self) -> Deferred: - return Deferred(UnaryOperator(operator.invert, self)) - - def __neg__(self) -> Deferred: - return Deferred(UnaryOperator(operator.neg, self)) - - def __add__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.add, self, other)) - - def __radd__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.add, other, self)) - - def __sub__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.sub, self, other)) - - def __rsub__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.sub, other, self)) - - def __mul__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.mul, self, other)) - - def __rmul__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.mul, other, self)) - - def __truediv__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.truediv, self, other)) - - def __rtruediv__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.truediv, other, self)) - - def __floordiv__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.floordiv, self, other)) - - def __rfloordiv__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.floordiv, other, self)) - - def __pow__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.pow, self, other)) - - def __rpow__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.pow, other, self)) - - def __mod__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.mod, self, other)) - - def __rmod__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.mod, other, self)) - - def __rshift__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.rshift, self, other)) - - def __rrshift__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.rshift, other, self)) - - def __lshift__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.lshift, self, other)) - - def __rlshift__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.lshift, other, self)) - - def __eq__(self, other: Any) -> Deferred: # type: ignore - return Deferred(BinaryOperator(operator.eq, self, other)) - - def __ne__(self, other: Any) -> Deferred: # type: ignore - return Deferred(BinaryOperator(operator.ne, self, other)) - - def __lt__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.lt, self, other)) - - def __le__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.le, self, other)) - - def __gt__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.gt, self, other)) - - def __ge__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.ge, self, other)) - - def __and__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.and_, self, other)) - - def __rand__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.and_, other, self)) - - def __or__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.or_, self, other)) - - def __ror__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.or_, other, self)) - - def __xor__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.xor, self, other)) - - def __rxor__(self, other: Any) -> Deferred: - return Deferred(BinaryOperator(operator.xor, other, self)) - - -class Variable(FrozenSlotted, Resolver): - """Retrieve a value from the context. - - Parameters - ---------- - name - The key to retrieve from the state. - - """ - - __slots__ = ("name",) - name: Any - - def __init__(self, name): - super().__init__(name=name) - - def __repr__(self): - return str(self.name) - - def resolve(self, context): - return context[self.name] - - -class Just(FrozenSlotted, Resolver): - """Construct exactly the given value. - - Parameters - ---------- - value - The value to return when the deferred is called. - - """ - - __slots__ = ("value",) - value: Any - - @classmethod - def __create__(cls, value): - if isinstance(value, cls): - return value - elif isinstance(value, (Deferred, Resolver)): - raise TypeError(f"{value} cannot be used as a Just value") - elif isinstance(value, collections.abc.Hashable): - return super().__create__(value) - else: - return JustUnhashable(value) - - def __init__(self, value): - super().__init__(value=value) - - def __repr__(self): - obj = self.value - if hasattr(obj, "__deferred_repr__"): - return obj.__deferred_repr__() - elif callable(obj): - return getattr(obj, "__name__", repr(obj)) - else: - return repr(obj) - - def resolve(self, context): - return self.value - - -class JustUnhashable(FrozenSlotted, Resolver): - """Construct exactly the given unhashable value. - - Parameters - ---------- - value - The value to return when the deferred is called. - - """ - - __slots__ = ("value",) - - def __init__(self, value): - hashable_value = PseudoHashable(value) - super().__init__(value=hashable_value) +class _Variable(Var): def __repr__(self): - obj = self.value.obj - if hasattr(obj, "__deferred_repr__"): - return obj.__deferred_repr__() - elif callable(obj): - return getattr(obj, "__name__", repr(obj)) - else: - return repr(obj) - - def resolve(self, context): - return self.value.obj - - -class Factory(FrozenSlotted, Resolver): - """Construct a value by calling a function. - - The function is called with two positional arguments: - 1. the value being matched - 2. the context dictionary - - The function must return the constructed value. - - Parameters - ---------- - func - The function to apply. - - """ - - __slots__ = ("func",) - func: Callable - - def __init__(self, func): - assert callable(func) - super().__init__(func=func) - - def resolve(self, context): - return self.func(**context) - - -class Attr(FrozenSlotted, Resolver): - __slots__ = ("obj", "name") - obj: Resolver - name: str - - def __init__(self, obj, name): - super().__init__(obj=resolver(obj), name=resolver(name)) - - def __repr__(self): - if isinstance(self.name, Just): - return f"{self.obj!r}.{self.name.value}" - else: - return f"Attr({self.obj!r}, {self.name!r})" - - def resolve(self, context): - obj = self.obj.resolve(context) - name = self.name.resolve(context) - return getattr(obj, name) - - -class Item(FrozenSlotted, Resolver): - __slots__ = ("obj", "name") - obj: Resolver - name: str - - def __init__(self, obj, name): - super().__init__(obj=resolver(obj), name=resolver(name)) - - def __repr__(self): - if isinstance(self.name, Just): - return f"{self.obj!r}[{self.name.value!r}]" - else: - return f"Item({self.obj!r}, {self.name!r})" - - def resolve(self, context): - obj = self.obj.resolve(context) - name = self.name.resolve(context) - return obj[name] - - -class Call(FrozenSlotted, Resolver): - """Pattern that calls a function with the given arguments. - - Both positional and keyword arguments are coerced into patterns. - - Parameters - ---------- - func - The function to call. - args - The positional argument patterns. - kwargs - The keyword argument patterns. - - """ - - __slots__ = ("func", "args", "kwargs") - func: Resolver - args: tuple[Resolver, ...] - kwargs: dict[str, Resolver] - - def __init__(self, func, *args, **kwargs): - if isinstance(func, Deferred): - func = func._resolver - elif isinstance(func, Resolver): - pass - elif callable(func): - func = Just(func) - else: - raise TypeError(f"Invalid callable {func!r}") - args = tuple(map(resolver, args)) - kwargs = FrozenDict({k: resolver(v) for k, v in kwargs.items()}) - super().__init__(func=func, args=args, kwargs=kwargs) - - def resolve(self, context): - func = self.func.resolve(context) - args = tuple(arg.resolve(context) for arg in self.args) - kwargs = {k: v.resolve(context) for k, v in self.kwargs.items()} - return func(*args, **kwargs) - - def __repr__(self): - func = repr(self.func) - args = ", ".join(map(repr, self.args)) - kwargs = ", ".join(f"{k}={v!r}" for k, v in self.kwargs.items()) - if args and kwargs: - return f"{func}({args}, {kwargs})" - elif args: - return f"{func}({args})" - elif kwargs: - return f"{func}({kwargs})" - else: - return f"{func}()" - - -_operator_symbols = { - operator.add: "+", - operator.sub: "-", - operator.mul: "*", - operator.truediv: "/", - operator.floordiv: "//", - operator.pow: "**", - operator.mod: "%", - operator.eq: "==", - operator.ne: "!=", - operator.lt: "<", - operator.le: "<=", - operator.gt: ">", - operator.ge: ">=", - operator.and_: "&", - operator.or_: "|", - operator.xor: "^", - operator.rshift: ">>", - operator.lshift: "<<", - operator.inv: "~", - operator.neg: "-", - operator.invert: "~", -} - - -class UnaryOperator(FrozenSlotted, Resolver): - __slots__ = ("func", "arg") - func: Callable - arg: Resolver - - def __init__(self, func, arg): - assert func in _operator_symbols - super().__init__(func=func, arg=resolver(arg)) - - def __repr__(self): - symbol = _operator_symbols[self.func] - return f"{symbol}{self.arg!r}" - - def resolve(self, context): - arg = self.arg.resolve(context) - return self.func(arg) - - -class BinaryOperator(FrozenSlotted, Resolver): - __slots__ = ("func", "left", "right") - func: Callable - left: Resolver - right: Resolver - - def __init__(self, func, left, right): - assert func in _operator_symbols - super().__init__(func=func, left=resolver(left), right=resolver(right)) - - def __repr__(self): - symbol = _operator_symbols[self.func] - return f"({self.left!r} {symbol} {self.right!r})" - - def resolve(self, context): - left = self.left.resolve(context) - right = self.right.resolve(context) - return self.func(left, right) - - -class Mapping(FrozenSlotted, Resolver): - __slots__ = ("typ", "values") - - def __init__(self, values): - typ = type(values) - values = FrozenDict({k: resolver(v) for k, v in values.items()}) - super().__init__(typ=typ, values=values) - - def __repr__(self): - items = ", ".join(f"{k!r}: {v!r}" for k, v in self.values.items()) - if self.typ is dict: - return f"{{{items}}}" - else: - return f"{self.typ.__name__}({{{items}}})" - - def resolve(self, context): - items = {k: v.resolve(context) for k, v in self.values.items()} - return self.typ(items) - - -class Sequence(FrozenSlotted, Resolver): - __slots__ = ("typ", "values") - typ: type - - def __init__(self, values): - typ = type(values) - values = tuple(map(resolver, values)) - super().__init__(typ=typ, values=values) - - def __repr__(self): - elems = ", ".join(map(repr, self.values)) - if self.typ is tuple: - return f"({elems})" - elif self.typ is list: - return f"[{elems}]" - else: - return f"{self.typ.__name__}({elems})" - - def resolve(self, context): - return self.typ(v.resolve(context) for v in self.values) - - -def resolver(obj): - if isinstance(obj, Deferred): - return obj._resolver - elif isinstance(obj, Resolver): - return obj - elif isinstance(obj, collections.abc.Mapping): - # allow nesting deferred patterns in dicts - return Mapping(obj) - elif isinstance(obj, collections.abc.Sequence): - # allow nesting deferred patterns in tuples/lists - if isinstance(obj, (str, bytes)): - return Just(obj) - else: - return Sequence(obj) - else: - # the object is used as a constant value - return Just(obj) - - -def deferred(obj): - return Deferred(resolver(obj)) - - -def var(name): - return Deferred(Variable(name)) - - -def const(value): - return Deferred(Just(value)) - - -def _contains_deferred(obj: Any) -> bool: - if isinstance(obj, (Resolver, Deferred)): - return True - elif (typ := type(obj)) in (tuple, list, set): - return any(_contains_deferred(o) for o in obj) - elif typ is dict: - return any(_contains_deferred(o) for o in obj.values()) - return False - - -F = TypeVar("F", bound=Callable) - - -@overload -def deferrable(*, repr: str | None = None) -> Callable[[F], F]: ... - - -@overload -def deferrable(func: F) -> F: ... - - -def deferrable(func=None, *, repr=None): - """Wrap a top-level expr function to support deferred arguments. - - When a deferrable function is called, the args & kwargs are traversed to - look for `Deferred` values (through builtin collections like - `list`/`tuple`/`set`/`dict`). If any `Deferred` arguments are found, then - the result is also `Deferred`. Otherwise the function is called directly. - - Parameters - ---------- - func - A callable to make deferrable - repr - An optional fixed string to use when repr-ing the deferred expression, - instead of the usual. This is useful for complex deferred expressions - where the arguments don't necessarily make sense to be user facing - in the repr. - - """ - - def wrapper(func): - # Parse the signature of func so we can validate deferred calls eagerly, - # erroring for invalid/missing arguments at call time not resolve time. - sig = inspect.signature(func) - - @functools.wraps(func) - def inner(*args, **kwargs): - if _contains_deferred((args, kwargs)): - # Try to bind the arguments now, raising a nice error - # immediately if the function was called incorrectly - sig.bind(*args, **kwargs) - builder = Call(func, *args, **kwargs) - return Deferred(builder, repr=repr) - return func(*args, **kwargs) - - return inner # type: ignore - - return wrapper if func is None else wrapper(func) + return self.name # reserved variable name for the value being matched -_ = var("_") +_ = Deferred(_Variable("_")) diff --git a/ibis/common/dispatch.py b/ibis/common/dispatch.py index 16563bd1bb4d..bc9e55d08436 100644 --- a/ibis/common/dispatch.py +++ b/ibis/common/dispatch.py @@ -4,13 +4,9 @@ import functools from collections import defaultdict from types import UnionType -from typing import Union +from typing import Union, get_args, get_origin -from ibis.common.typing import ( - evaluate_annotations, - get_args, - get_origin, -) +from ibis.common.typing import evaluate_annotations from ibis.util import import_object, unalias_package diff --git a/ibis/common/egraph.py b/ibis/common/egraph.py deleted file mode 100644 index 5457549bff7d..000000000000 --- a/ibis/common/egraph.py +++ /dev/null @@ -1,828 +0,0 @@ -from __future__ import annotations - -import collections -import itertools -import math -from collections.abc import Callable, Hashable, Iterable, Iterator, Mapping -from typing import Any, TypeVar - -from ibis.common.bases import FrozenSlotted as Slotted -from ibis.common.graph import Node -from ibis.util import promote_list - -K = TypeVar("K", bound=Hashable) - - -class DisjointSet(Mapping[K, set[K]]): - """Disjoint set data structure. - - Also known as union-find data structure. It is a data structure that keeps - track of a set of elements partitioned into a number of disjoint (non-overlapping) - subsets. It provides near-constant-time operations to add new sets, to merge - existing sets, and to determine whether elements are in the same set. - - Parameters - ---------- - data : - Initial data to add to the disjoint set. - - Examples - -------- - >>> ds = DisjointSet() - >>> ds.add(1) - 1 - >>> ds.add(2) - 2 - >>> ds.add(3) - 3 - >>> ds.union(1, 2) - True - >>> ds.union(2, 3) - True - >>> ds.find(1) - 1 - >>> ds.find(2) - 1 - >>> ds.find(3) - 1 - >>> ds.union(1, 3) - False - - """ - - __slots__ = ("_parents", "_classes") - _parents: dict - _classes: dict - - def __init__(self, data: Iterable[K] | None = None): - self._parents = {} - self._classes = {} - if data is not None: - for id in data: - self.add(id) - - def __contains__(self, id) -> bool: - """Check if the given id is in the disjoint set. - - Parameters - ---------- - id : - The id to check. - - Returns - ------- - ined: - True if the id is in the disjoint set, False otherwise. - - """ - return id in self._parents - - def __getitem__(self, id) -> set[K]: - """Get the set of ids that are in the same class as the given id. - - Parameters - ---------- - id : - The id to get the class for. - - Returns - ------- - class: - The set of ids that are in the same class as the given id, including - the given id. - - """ - id = self._parents[id] - return self._classes[id] - - def __iter__(self) -> Iterator[K]: - """Iterate over the ids in the disjoint set.""" - return iter(self._parents) - - def __len__(self) -> int: - """Get the number of ids in the disjoint set.""" - return len(self._parents) - - def __eq__(self, other: object) -> bool: - """Check if the disjoint set is equal to another disjoint set. - - Parameters - ---------- - other : - The other disjoint set to compare to. - - Returns - ------- - equal: - True if the disjoint sets are equal, False otherwise. - - """ - if not isinstance(other, DisjointSet): - return NotImplemented - return self._parents == other._parents - - def copy(self) -> DisjointSet: - """Make a copy of the disjoint set. - - Returns - ------- - copy: - A copy of the disjoint set. - - """ - ds = DisjointSet() - ds._parents = self._parents.copy() - ds._classes = self._classes.copy() - return ds - - def add(self, id: K) -> K: - """Add a new id to the disjoint set. - - If the id is not in the disjoint set, it will be added to the disjoint set - along with a new class containing only the given id. - - Parameters - ---------- - id : - The id to add to the disjoint set. - - Returns - ------- - id: - The id that was added to the disjoint set. - - """ - if id in self._parents: - return self._parents[id] - self._parents[id] = id - self._classes[id] = {id} - return id - - def find(self, id: K) -> K: - """Find the root of the class that the given id is in. - - Also called as the canonicalized id or the representative id. - - Parameters - ---------- - id : - The id to find the canonicalized id for. - - Returns - ------- - id: - The canonicalized id for the given id. - - """ - return self._parents[id] - - def union(self, id1, id2) -> bool: - """Merge the classes that the given ids are in. - - If the ids are already in the same class, this will return False. Otherwise - it will merge the classes and return True. - - Parameters - ---------- - id1 : - The first id to merge the classes for. - id2 : - The second id to merge the classes for. - - Returns - ------- - merged: - True if the classes were merged, False otherwise. - - """ - # Find the root of each class - id1 = self._parents[id1] - id2 = self._parents[id2] - if id1 == id2: - return False - - # Merge the smaller eclass into the larger one, aka. union-find by size - class1 = self._classes[id1] - class2 = self._classes[id2] - if len(class1) >= len(class2): - id1, id2 = id2, id1 - class1, class2 = class2, class1 - - # Update the parent pointers, this is called path compression but done - # during the union operation to keep the find operation minimal - for id in class1: - self._parents[id] = id2 - - # Do the actual merging and clear the other eclass - class2 |= class1 - class1.clear() - - return True - - def connected(self, id1, id2): - """Check if the given ids are in the same class. - - True if both ids have the same canonicalized id, False otherwise. - - Parameters - ---------- - id1 : - The first id to check. - id2 : - The second id to check. - - Returns - ------- - connected: - True if the ids are connected, False otherwise. - - """ - return self._parents[id1] == self._parents[id2] - - def verify(self): - """Verify that the disjoint set is not corrupted. - - Check that each id's canonicalized id's class. In general corruption - should not happen if the public API is used, but this is a sanity check - to make sure that the internal data structures are not corrupted. - - Returns - ------- - verified: - True if the disjoint set is not corrupted, False otherwise. - - """ - for id in self._parents: - if id not in self._classes[self._parents[id]]: - raise RuntimeError( - f"DisjointSet is corrupted: {id} is not in its class" - ) - - -class Variable(Slotted): - """A named capture in a pattern. - - Parameters - ---------- - name : str - The name of the variable. - - """ - - __slots__ = ("name",) - name: str - - def __init__(self, name: str): - if name is None: - raise ValueError("Variable name cannot be None") - super().__init__(name=name) - - def __repr__(self): - return f"${self.name}" - - def substitute(self, egraph, enode, subst): - """Substitute the variable with the corresponding value in the substitution. - - Parameters - ---------- - egraph : EGraph - The egraph instance. - enode : ENode - The matched enode. - subst : dict - The substitution dictionary. - - Returns - ------- - value : Any - The substituted value. - - """ - return subst[self.name] - - -# Pattern corresponds to a selection which is flattened to a join of selections -class Pattern(Slotted): - """A non-ground term, tree of enodes possibly containing variables. - - This class is used to represent a pattern in a query. The pattern is almost - identical to an ENode, except that it can contain variables. - - Parameters - ---------- - head : type - The head or python type of the ENode to match against. - args : tuple - The arguments of the pattern. The arguments can be enodes, patterns, - variables or leaf values. - name : str, optional - The name of the pattern which is used to refer to it in a rewrite rule. - - """ - - __slots__ = ("head", "args", "name") - head: type - args: tuple - name: str | None - - # TODO(kszucs): consider to raise if the pattern matches none - def __init__(self, head, args, name=None, conditions=None): - # TODO(kszucs): ensure that args are either patterns, variables or leaf values - assert all(not isinstance(arg, (ENode, Node)) for arg in args) - super().__init__(head=head, args=tuple(args), name=name) - - def matches_none(self): - """Evaluate whether the pattern is guaranteed to match nothing. - - This can be evaluated before the matching loop starts, so eventually can - be eliminated from the flattened query. - """ - return len(self.head.__argnames__) != len(self.args) - - def matches_all(self): - """Evaluate whether the pattern is guaranteed to match everything. - - This can be evaluated before the matching loop starts, so eventually can - be eliminated from the flattened query. - """ - return not self.matches_none() and all( - isinstance(arg, Variable) for arg in self.args - ) - - def __repr__(self): - argstring = ", ".join(map(repr, self.args)) - return f"P{self.head.__name__}({argstring})" - - def __rshift__(self, rhs): - """Syntax sugar to create a rewrite rule.""" - return Rewrite(self, rhs) - - def __rmatmul__(self, name): - """Syntax sugar to create a named pattern.""" - return self.__class__(self.head, self.args, name) - - def flatten(self, var=None, counter=None): - """Recursively flatten the pattern to a join of selections. - - `Pattern(Add, (Pattern(Mul, ($x, 1)), $y))` is turned into a join of - selections by introducing auxiliary variables where each selection gets - executed as a dictionary lookup. - - In SQL terms this is equivalent to the following query: - SELECT m.0 AS $x, a.1 AS $y FROM Add a JOIN Mul m ON a.0 = m.id WHERE m.1 = 1 - - Parameters - ---------- - var : Variable - The variable to assign to the flattened pattern. - counter : Iterator[int] - The counter to generate unique variable names for auxiliary variables - connecting the selections. - - Yields - ------ - (var, pattern) : tuple[Variable, Pattern] - The variable and the flattened pattern where the flattened pattern - cannot contain any patterns just variables. - - """ - # TODO(kszucs): convert a pattern to a query object instead by flattening it - counter = counter or itertools.count() - - if var is None: - if self.name is None: - var = Variable(next(counter)) - else: - var = Variable(self.name) - - args = [] - for arg in self.args: - if isinstance(arg, Pattern): - if arg.name is None: - aux = Variable(next(counter)) - else: - aux = Variable(arg.name) - yield from arg.flatten(aux, counter) - args.append(aux) - else: - args.append(arg) - - yield (var, Pattern(self.head, args)) - - def substitute(self, egraph, enode, subst): - """Substitute the variables in the pattern with the corresponding values. - - Parameters - ---------- - egraph : EGraph - The egraph instance. - enode : ENode - The matched enode. - subst : dict - The substitution dictionary. - - Returns - ------- - enode : ENode - The substituted pattern which is a ground term aka. an ENode. - - """ - args = [] - for arg in self.args: - if isinstance(arg, (Variable, Pattern)): - arg = arg.substitute(egraph, enode, subst) - args.append(arg) - return ENode(self.head, tuple(args)) - - -class DynamicApplier(Slotted): - """A dynamic applier which calls a function to compute the result.""" - - __slots__ = ("func",) - func: Callable - - def __init__(self, func): - super().__init__(func=func) - - def substitute(self, egraph, enode, subst): - kwargs = {k: v for k, v in subst.items() if isinstance(k, str)} - result = self.func(egraph, enode, **kwargs) - if not isinstance(result, ENode): - raise TypeError(f"applier must return an ENode, got {type(result)}") - return result - - -class Rewrite(Slotted): - """A rewrite rule which matches a pattern and applies a pattern or a function.""" - - __slots__ = ("matcher", "applier") - matcher: Pattern - applier: Callable | Pattern | Variable - - def __init__(self, matcher, applier): - if callable(applier): - applier = DynamicApplier(applier) - elif not isinstance(applier, (Pattern, Variable)): - raise TypeError( - "applier must be a Pattern or a Variable returning an ENode" - ) - super().__init__(matcher=matcher, applier=applier) - - def __repr__(self): - return f"{self.lhs} >> {self.rhs}" - - -class ENode(Slotted, Node): - """A ground term which is a node in the EGraph, called ENode. - - Parameters - ---------- - head : type - The type of the Node the ENode represents. - args : tuple - The arguments of the ENode which are either ENodes or leaf values. - - """ - - __slots__ = ("head", "args") - head: type - args: tuple - - def __init__(self, head, args): - # TODO(kszucs): ensure that it is a ground term, this check should be removed - assert all(not isinstance(arg, (Pattern, Variable)) for arg in args) - super().__init__(head=head, args=tuple(args)) - - @property - def __argnames__(self): - """Implementation for the `ibis.common.graph.Node` protocol.""" - return self.head.__argnames__ - - @property - def __args__(self): - """Implementation for the `ibis.common.graph.Node` protocol.""" - return self.args - - def __repr__(self): - argstring = ", ".join(map(repr, self.args)) - return f"E{self.head.__name__}({argstring})" - - def __lt__(self, other): - return False - - @classmethod - def from_node(cls, node: Any): - """Convert an `ibis.common.graph.Node` to an `ENode`.""" - - def mapper(node, _, **kwargs): - return cls(node.__class__, kwargs.values()) - - return node.map(mapper)[node] - - def to_node(self): - """Convert the ENode back to an `ibis.common.graph.Node`.""" - - def mapper(node, _, **kwargs): - return node.head(**kwargs) - - return self.map(mapper)[self] - - -# TODO: move every E* into the Egraph so its API only uses Nodes -# TODO: track whether the egraph is saturated or not -# TODO: support parent classes in etables (Join <= InnerJoin) - - -class EGraph: - __slots__ = ("_nodes", "_etables", "_eclasses") - _nodes: dict - _etables: collections.defaultdict - _eclasses: DisjointSet - - def __init__(self): - # store the nodes before converting them to enodes, so we can spare the initial - # node traversal and omit the creation of enodes - self._nodes = {} - # map enode heads to their eclass ids and their arguments, this is required for - # the relational e-matching (Node => dict[type, tuple[Union[ENode, Any], ...]]) - self._etables = collections.defaultdict(dict) - # map enodes to their eclass, this is the heart of the egraph - self._eclasses = DisjointSet() - - def __repr__(self): - return f"EGraph({self._eclasses})" - - def _as_enode(self, node: Node) -> ENode: - """Convert a node to an enode.""" - # order is important here since ENode is a subclass of Node - if isinstance(node, ENode): - return node - elif isinstance(node, Node): - return self._nodes.get(node) or ENode.from_node(node) - else: - raise TypeError(node) - - def add(self, node: Node) -> ENode: - """Add a node to the egraph. - - The node is converted to an enode and added to the egraph. If the enode is - already present in the egraph, then the canonical enode is returned. - - Parameters - ---------- - node : - The node to add to the egraph. - - Returns - ------- - enode : - The canonical enode. - - """ - enode = self._as_enode(node) - if enode in self._eclasses: - return self._eclasses.find(enode) - - args = [] - for arg in enode.args: - if isinstance(arg, ENode): - args.append(self.add(arg)) - else: - args.append(arg) - - enode = ENode(enode.head, args) - self._eclasses.add(enode) - self._etables[enode.head][enode] = tuple(args) - - return enode - - def union(self, node1: Node, node2: Node) -> ENode: - """Union two nodes in the egraph. - - The nodes are converted to enodes which must be present in the egraph. - The eclasses of the nodes are merged and the canonical enode is returned. - - Parameters - ---------- - node1 : - The first node to union. - node2 : - The second node to union. - - Returns - ------- - enode : - The canonical enode. - - """ - enode1 = self._as_enode(node1) - enode2 = self._as_enode(node2) - return self._eclasses.union(enode1, enode2) - - def _match_args(self, args, patargs): - """Match the arguments of an enode against a pattern's arguments. - - An enode matches a pattern if each of the arguments are: - - both leaf values and equal - - both enodes and in the same eclass - - an enode and a variable, in which case the variable gets bound to the enode - - Parameters - ---------- - args : tuple - The arguments of the enode. Since an enode is a ground term, the arguments - are either enodes or leaf values. - patargs : tuple - The arguments of the pattern. Since a pattern is a flat term (flattened - using auxiliary variables), the arguments are either variables or leaf - values. - - Returns - ------- - dict[str, Any] : - The mapping of variable names to enodes or leaf values. - - """ - subst = {} - for arg, patarg in zip(args, patargs): - if isinstance(patarg, Variable): - if isinstance(arg, ENode): - subst[patarg.name] = self._eclasses.find(arg) - else: - subst[patarg.name] = arg - # TODO(kszucs): this is not needed since patarg is either a variable or a - # leaf value due to the pattern flattening, though we may choose to - # support this in the future - # elif isinstance(arg, ENode): - # if self._eclasses.find(arg) != self._eclasses.find(arg): - # return None - elif patarg != arg: - return None - return subst - - def match(self, pattern: Pattern) -> dict[ENode, dict[str, Any]]: - """Match a pattern in the egraph. - - The pattern is converted to a conjunctive query (list of flat patterns) and - matched against the relations represented by the egraph. This is called the - relational e-matching. - - Parameters - ---------- - pattern : - The pattern to match in the egraph. - - Returns - ------- - matches : - A dictionary mapping the matched enodes to their substitutions. - - """ - # patterns could be reordered to match on the most selective one first - patterns = dict(reversed(list(pattern.flatten()))) - if any(pat.matches_none() for pat in patterns.values()): - return {} - - # extract the first pattern - (auxvar, pattern), *rest = patterns.items() - matches = {} - - # match the first pattern and create the initial substitutions - rel = self._etables[pattern.head] - for enode, args in rel.items(): - if (subst := self._match_args(args, pattern.args)) is not None: - subst[auxvar.name] = enode - matches[enode] = subst - - # match the rest of the patterns and extend the substitutions - for auxvar, pattern in rest: - rel = self._etables[pattern.head] - tmp = {} - for enode, subst in matches.items(): - if args := rel.get(subst[auxvar.name]): - if (newsubst := self._match_args(args, pattern.args)) is not None: - tmp[enode] = {**subst, **newsubst} - matches = tmp - - return matches - - def apply(self, rewrites: list[Rewrite]) -> int: - """Apply the given rewrites to the egraph. - - Iteratively match the patterns and apply the rewrites to the graph. The returned - number of changes is the number of eclasses that were merged. This is the - number of changes made to the egraph. The egraph is saturated if the number of - changes is zero. - - Parameters - ---------- - rewrites : - A list of rewrites to apply. - - Returns - ------- - n_changes - The number of changes made to the egraph. - - """ - n_changes = 0 - for rewrite in promote_list(rewrites): - for match, subst in self.match(rewrite.matcher).items(): - enode = rewrite.applier.substitute(self, match, subst) - enode = self.add(enode) - n_changes += self._eclasses.union(match, enode) - return n_changes - - def run(self, rewrites: list[Rewrite], n: int = 10) -> bool: - """Run the match-apply cycles for the given number of iterations. - - Parameters - ---------- - rewrites : - A list of rewrites to apply. - n : - The number of iterations to run. - - Returns - ------- - saturated : - True if the egraph is saturated, False otherwise. - - """ - return any(not self.apply(rewrites) for _i in range(n)) - - # TODO(kszucs): investigate whether the costs and best enodes could be maintained - # during the union operations after each match-apply cycle - def extract(self, node: Node) -> Node: - """Extract a node from the egraph. - - The node is converted to an enode which recursively gets converted to an - enode having the lowest cost according to equivalence classes. Currently - the cost function is hardcoded as the depth of the enode. - - Parameters - ---------- - node : - The node to extract from the egraph. - - Returns - ------- - node : - The extracted node. - - """ - enode = self._as_enode(node) - enode = self._eclasses.find(enode) - costs = {en: (math.inf, None) for en in self._eclasses.keys()} - - def enode_cost(enode): - cost = 1 - for arg in enode.args: - if isinstance(arg, ENode): - cost += costs[arg][0] - else: - cost += 1 - return cost - - changed = True - while changed: - changed = False - for en, enodes in self._eclasses.items(): - new_cost = min((enode_cost(en), en) for en in enodes) - if costs[en][0] != new_cost[0]: - changed = True - costs[en] = new_cost - - def extract(en): - if not isinstance(en, ENode): - return en - best = costs[en][1] - args = tuple(extract(a) for a in best.args) - return best.head(*args) - - return extract(enode) - - def equivalent(self, node1: Node, node2: Node) -> bool: - """Check if two nodes are equivalent. - - The nodes are converted to enodes and checked for equivalence: they are - equivalent if they are in the same equivalence class. - - Parameters - ---------- - node1 : - The first node. - node2 : - The second node. - - Returns - ------- - equivalent : - True if the nodes are equivalent, False otherwise. - - """ - enode1 = self._as_enode(node1) - enode2 = self._as_enode(node2) - enode1 = self._eclasses.find(enode1) - enode2 = self._eclasses.find(enode2) - return enode1 == enode2 diff --git a/ibis/common/graph.py b/ibis/common/graph.py index 1b11e1f00d75..dfeb23fb1d41 100644 --- a/ibis/common/graph.py +++ b/ibis/common/graph.py @@ -3,13 +3,13 @@ from __future__ import annotations import itertools -from abc import abstractmethod from collections import deque from collections.abc import Callable, Iterable, Iterator, KeysView, Mapping, Sequence from typing import TYPE_CHECKING, Any, Optional, TypeVar, Union -from ibis.common.bases import Hashable -from ibis.common.patterns import NoMatch, Pattern +from koerce import MatchError, Pattern + +from ibis.common.grounds import Concrete from ibis.common.typing import _ClassInfo from ibis.util import experimental, promote_list @@ -46,7 +46,7 @@ def _flatten_collections(node: Any) -> Iterator[N]: >>> from ibis.common.grounds import Concrete >>> from ibis.common.graph import Node >>> - >>> class MyNode(Concrete, Node): + >>> class MyNode(Node): ... number: int ... string: str ... children: tuple[Node, ...] @@ -94,7 +94,7 @@ def _recursive_lookup(obj: Any, dct: dict) -> Any: >>> from ibis.common.grounds import Concrete >>> from ibis.common.graph import Node >>> - >>> class MyNode(Concrete, Node): + >>> class MyNode(Node): ... number: int ... string: str ... children: tuple[Node, ...] @@ -187,7 +187,12 @@ def _coerce_finder(obj: FinderLike, context: Optional[dict] = None) -> Finder: ctx = context or {} def fn(node): - return obj.match(node, ctx) is not NoMatch + try: + obj.apply(node, ctx) + except MatchError: + return False + else: + return True elif isinstance(obj, (tuple, type)): def fn(node): @@ -223,10 +228,11 @@ def fn(node, kwargs): # children, so we can match on the new node containing the rewritten # child arguments, this way we can propagate the rewritten nodes # upward in the hierarchy - recreated = node.__recreate__(kwargs) if kwargs else node - if (result := obj.match(recreated, ctx)) is NoMatch: + recreated = node.__class__(**kwargs) if kwargs else node + try: + return obj.apply(recreated, ctx) + except MatchError: return recreated - return result elif isinstance(obj, Mapping): @@ -236,7 +242,7 @@ def fn(node, kwargs): try: return obj[node] except KeyError: - return node.__recreate__(kwargs) if kwargs else node + return node.__class__(**kwargs) if kwargs else node elif callable(obj): fn = obj else: @@ -245,24 +251,7 @@ def fn(node, kwargs): return fn -class Node(Hashable): - __slots__ = () - - @classmethod - def __recreate__(cls, kwargs: Any) -> Self: - """Reconstruct the node from the given arguments.""" - return cls(**kwargs) - - @property - @abstractmethod - def __args__(self) -> tuple[Any, ...]: - """Sequence of arguments to traverse.""" - - @property - @abstractmethod - def __argnames__(self) -> tuple[str, ...]: - """Sequence of argument names.""" - +class Node(Concrete): @property def __children__(self) -> tuple[Node, ...]: """Sequence of children nodes.""" diff --git a/ibis/common/grounds.py b/ibis/common/grounds.py index 46f3309a3c2f..30ae129a3b87 100644 --- a/ibis/common/grounds.py +++ b/ibis/common/grounds.py @@ -1,237 +1,66 @@ from __future__ import annotations -import contextlib -from copy import copy -from typing import ( - Any, - ClassVar, - Union, - get_origin, -) - -from typing_extensions import Self, dataclass_transform - -from ibis.common.annotations import ( - Annotation, - Argument, - Attribute, - Signature, -) -from ibis.common.bases import ( # noqa: F401 - Abstract, - AbstractMeta, - Comparable, - Final, - Hashable, - Immutable, - Singleton, -) -from ibis.common.collections import FrozenDict # noqa: TCH001 -from ibis.common.patterns import Pattern -from ibis.common.typing import evaluate_annotations - - -class AnnotableMeta(AbstractMeta): - """Metaclass to turn class annotations into a validatable function signature.""" - - __slots__ = () - - def __new__(metacls, clsname, bases, dct, **kwargs): - # inherit signature from parent classes - signatures, attributes = [], {} - for parent in bases: - with contextlib.suppress(AttributeError): - attributes.update(parent.__attributes__) - with contextlib.suppress(AttributeError): - signatures.append(parent.__signature__) - - # collection type annotations and convert them to patterns - module = dct.get("__module__") - qualname = dct.get("__qualname__") or clsname - annotations = dct.get("__annotations__", {}) - - # TODO(kszucs): pass dct as localns to evaluate_annotations - typehints = evaluate_annotations(annotations, module, clsname) - for name, typehint in typehints.items(): - if get_origin(typehint) is ClassVar: - continue - pattern = Pattern.from_typehint(typehint) - if name in dct: - dct[name] = Argument(pattern, default=dct[name], typehint=typehint) - else: - dct[name] = Argument(pattern, typehint=typehint) - - # collect the newly defined annotations - slots = list(dct.pop("__slots__", [])) - namespace, arguments = {}, {} - for name, attrib in dct.items(): - if isinstance(attrib, Pattern): - arguments[name] = Argument(attrib) - slots.append(name) - elif isinstance(attrib, Argument): - arguments[name] = attrib - slots.append(name) - elif isinstance(attrib, Attribute): - attributes[name] = attrib - slots.append(name) - else: - namespace[name] = attrib - - # merge the annotations with the parent annotations - signature = Signature.merge(*signatures, **arguments) - argnames = tuple(signature.parameters.keys()) - - namespace.update( - __module__=module, - __qualname__=qualname, - __argnames__=argnames, - __attributes__=attributes, - __match_args__=argnames, - __signature__=signature, - __slots__=tuple(slots), - ) - return super().__new__(metacls, clsname, bases, namespace, **kwargs) - - def __or__(self, other): - # required to support `dt.Numeric | dt.Floating` annotation for python<3.10 - return Union[self, other] - - -@dataclass_transform() -class Annotable(Abstract, metaclass=AnnotableMeta): - """Base class for objects with custom validation rules.""" - - __signature__: ClassVar[Signature] - """Signature of the class, containing the Argument annotations.""" - - __attributes__: ClassVar[FrozenDict[str, Annotation]] - """Mapping of the Attribute annotations.""" - - __argnames__: ClassVar[tuple[str, ...]] - """Names of the arguments.""" - - __match_args__: ClassVar[tuple[str, ...]] - """Names of the arguments to be used for pattern matching.""" - - @classmethod - def __create__(cls, *args: Any, **kwargs: Any) -> Self: - # construct the instance by passing only validated keyword arguments - kwargs = cls.__signature__.validate(cls, args, kwargs) - return super().__create__(**kwargs) - - @classmethod - def __recreate__(cls, kwargs: Any) -> Self: - # bypass signature binding by requiring keyword arguments only - kwargs = cls.__signature__.validate_nobind(cls, kwargs) - return super().__create__(**kwargs) - - def __init__(self, **kwargs: Any) -> None: - # set the already validated arguments - for name, value in kwargs.items(): - object.__setattr__(self, name, value) - # initialize the remaining attributes - for name, field in self.__attributes__.items(): - if field.has_default(): - object.__setattr__(self, name, field.get_default(name, self)) - - def __setattr__(self, name, value) -> None: - # first try to look up the argument then the attribute - if param := self.__signature__.parameters.get(name): - value = param.annotation.validate(name, value, self) - # then try to look up the attribute - elif annot := self.__attributes__.get(name): - value = annot.validate(name, value, self) - return super().__setattr__(name, value) - - def __repr__(self) -> str: - args = (f"{n}={getattr(self, n)!r}" for n in self.__argnames__) - argstring = ", ".join(args) - return f"{self.__class__.__name__}({argstring})" +from koerce import Annotable, MatchError +from typing_extensions import Self - def __eq__(self, other) -> bool: - # compare types - if type(self) is not type(other): - return NotImplemented - # compare arguments - if self.__args__ != other.__args__: - return False - # compare attributes - for name in self.__attributes__: - if getattr(self, name, None) != getattr(other, name, None): - return False - return True - @property - def __args__(self) -> tuple[Any, ...]: - return tuple(getattr(self, name) for name in self.__argnames__) - - def copy(self, **overrides: Any) -> Annotable: - """Return a copy of this object with the given overrides. - - Parameters - ---------- - overrides - Argument override values - - Returns - ------- - Annotable - New instance of the copied object - - """ - this = copy(self) - for name, value in overrides.items(): - setattr(this, name, value) - return this - - -class Concrete(Immutable, Comparable, Annotable): - """Opinionated base class for immutable data classes.""" - - __slots__ = ("__args__", "__precomputed_hash__") - - def __init__(self, **kwargs: Any) -> None: - # collect and set the arguments in a single pass - args = [] - for name in self.__argnames__: - value = kwargs[name] - args.append(value) - object.__setattr__(self, name, value) - - # precompute the hash value since the instance is immutable - args = tuple(args) - hashvalue = hash((self.__class__, args)) - object.__setattr__(self, "__args__", args) - object.__setattr__(self, "__precomputed_hash__", hashvalue) - - # initialize the remaining attributes - for name, field in self.__attributes__.items(): - if field.has_default(): - object.__setattr__(self, name, field.get_default(name, self)) - - def __reduce__(self): - # assuming immutability and idempotency of the __init__ method, we can - # reconstruct the instance from the arguments without additional attributes - state = dict(zip(self.__argnames__, self.__args__)) - return (self.__recreate__, (state,)) +class Concrete(Annotable, immutable=True, hashable=True): + """Enable quick equality comparisons. + + The subclasses must implement the `__equals__` method that returns a boolean + value indicating whether the two instances are equal. This method is called + only if the two instances are of the same type and the result is cached for + future comparisons. + + Since the class holds a global cache of comparison results, it is important + to make sure that the instances are not kept alive longer than necessary. + """ + + __equality_cache__ = {} def __hash__(self) -> int: return self.__precomputed_hash__ - def __equals__(self, other) -> bool: - return hash(self) == hash(other) and self.__args__ == other.__args__ + def __eq__(self, other) -> bool: + if self is other: + return True - @property - def args(self): - return self.__args__ + # type comparison should be cheap + if type(self) is not type(other): + return False - @property - def argnames(self) -> tuple[str, ...]: - return self.__argnames__ + id1 = id(self) + id2 = id(other) + try: + return self.__equality_cache__[id1][id2] + except KeyError: + result = hash(self) == hash(other) and self.__args__ == other.__args__ + self.__equality_cache__.setdefault(id1, {})[id2] = result + self.__equality_cache__.setdefault(id2, {})[id1] = result + return result + + def __del__(self): + id1 = id(self) + for id2 in self.__equality_cache__.pop(id1, ()): + eqs2 = self.__equality_cache__[id2] + del eqs2[id1] + if not eqs2: + del self.__equality_cache__[id2] def copy(self, **overrides) -> Self: kwargs = dict(zip(self.__argnames__, self.__args__)) if unknown_args := overrides.keys() - kwargs.keys(): raise AttributeError(f"Unexpected arguments: {unknown_args}") kwargs.update(overrides) - return self.__recreate__(kwargs) + return self.__class__(**kwargs) + + @property + def args(self): + return self.__args__ + + @property + def argnames(self): + return self.__argnames__ + + +ValidationError = SignatureValidationError = (MatchError, ValueError, TypeError) diff --git a/ibis/common/patterns.py b/ibis/common/patterns.py deleted file mode 100644 index 4c54abc2ec4b..000000000000 --- a/ibis/common/patterns.py +++ /dev/null @@ -1,1708 +0,0 @@ -from __future__ import annotations - -import math -import numbers -from abc import abstractmethod -from collections.abc import Callable, Mapping, Sequence -from enum import Enum -from inspect import Parameter -from typing import ( - Annotated, - ForwardRef, - Generic, - Literal, - Optional, - TypeVar, - Union, - get_args, - get_origin, -) -from typing import Any as AnyType - -import toolz -from typing_extensions import GenericMeta - -from ibis.common.bases import FrozenSlotted as Slotted -from ibis.common.bases import Hashable, Singleton -from ibis.common.collections import FrozenDict, RewindableIterator, frozendict -from ibis.common.deferred import ( - Deferred, - Factory, - Resolver, - Variable, - _, # noqa: F401 - resolver, -) -from ibis.common.typing import ( - Coercible, - CoercionError, - Sentinel, - UnionType, - _ClassInfo, - format_typehint, - get_bound_typevars, - get_type_params, -) -from ibis.util import import_object, is_iterable, unalias_package - -T_co = TypeVar("T_co", covariant=True) - - -def as_resolver(obj): - if callable(obj) and not isinstance(obj, Deferred): - return Factory(obj) - else: - return resolver(obj) - - -class NoMatch(metaclass=Sentinel): - """Marker to indicate that a pattern didn't match.""" - - -# TODO(kszucs): have an As[int] or Coerced[int] type in ibis.common.typing which -# would be used to annotate an argument as coercible to int or to a certain type -# without needing for the type to inherit from Coercible -class Pattern(Hashable): - """Base class for all patterns. - - Patterns are used to match values against a given condition. They are extensively - used by other core components of Ibis to validate and/or coerce user inputs. - """ - - @classmethod - def from_typehint(cls, annot: type, allow_coercion: bool = True) -> Pattern: - """Construct a validator from a python type annotation. - - Parameters - ---------- - annot - The typehint annotation to construct the pattern from. This must be - an already evaluated type annotation. - allow_coercion - Whether to use coercion if the typehint is a Coercible type. - - Returns - ------- - A pattern that matches the given type annotation. - - """ - # TODO(kszucs): cache the result of this function - # TODO(kszucs): explore issubclass(typ, SupportsInt) etc. - origin, args = get_origin(annot), get_args(annot) - - if origin is None: - # the typehint is not generic - if annot is Ellipsis or annot is AnyType: - # treat both `Any` and `...` as wildcard - return _any - elif isinstance(annot, type): - # the typehint is a concrete type (e.g. int, str, etc.) - if allow_coercion and issubclass(annot, Coercible): - # the type implements the Coercible protocol so we try to - # coerce the value to the given type rather than checking - return CoercedTo(annot) - else: - return InstanceOf(annot) - elif isinstance(annot, TypeVar): - # if the typehint is a type variable we try to construct a - # validator from it only if it is covariant and has a bound - if not annot.__covariant__: - raise NotImplementedError( - "Only covariant typevars are supported for now" - ) - if annot.__bound__: - return cls.from_typehint(annot.__bound__) - else: - return _any - elif isinstance(annot, Enum): - # for enums we check the value against the enum values - return EqualTo(annot) - elif isinstance(annot, str): - # for strings and forward references we check in a lazy way - return LazyInstanceOf(annot) - elif isinstance(annot, ForwardRef): - return LazyInstanceOf(annot.__forward_arg__) - else: - raise TypeError(f"Cannot create validator from annotation {annot!r}") - elif origin is CoercedTo: - return CoercedTo(args[0]) - elif origin is Literal: - # for literal types we check the value against the literal values - return IsIn(args) - elif origin is UnionType or origin is Union: - # this is slightly more complicated because we need to handle - # Optional[T] which is Union[T, None] and Union[T1, T2, ...] - *rest, last = args - if last is type(None): - # the typehint is Optional[*rest] which is equivalent to - # Union[*rest, None], so we construct an Option pattern - if len(rest) == 1: - inner = cls.from_typehint(rest[0]) - else: - inner = AnyOf(*map(cls.from_typehint, rest)) - return Option(inner) - else: - # the typehint is Union[*args] so we construct an AnyOf pattern - return AnyOf(*map(cls.from_typehint, args)) - elif origin is Annotated: - # the Annotated typehint can be used to add extra validation logic - # to the typehint, e.g. Annotated[int, Positive], the first argument - # is used for isinstance checks, the rest are applied in conjunction - annot, *extras = args - return AllOf(cls.from_typehint(annot), *extras) - elif origin is Callable: - # the Callable typehint is used to annotate functions, e.g. the - # following typehint annotates a function that takes two integers - # and returns a string: Callable[[int, int], str] - if args: - # callable with args and return typehints construct a special - # CallableWith validator - arg_hints, return_hint = args - arg_patterns = tuple(map(cls.from_typehint, arg_hints)) - return_pattern = cls.from_typehint(return_hint) - return CallableWith(arg_patterns, return_pattern) - else: - # in case of Callable without args we check for the Callable - # protocol only - return InstanceOf(Callable) - elif issubclass(origin, tuple): - # construct validators for the tuple elements, but need to treat - # variadic tuples differently, e.g. tuple[int, ...] is a variadic - # tuple of integers, while tuple[int] is a tuple with a single int - first, *rest = args - if rest == [Ellipsis]: - return TupleOf(cls.from_typehint(first)) - else: - return PatternList(map(cls.from_typehint, args), type=origin) - elif issubclass(origin, Sequence): - # construct a validator for the sequence elements where all elements - # must be of the same type, e.g. Sequence[int] is a sequence of ints - (value_inner,) = map(cls.from_typehint, args) - if allow_coercion and issubclass(origin, Coercible): - return GenericSequenceOf(value_inner, type=origin) - else: - return SequenceOf(value_inner, type=origin) - elif issubclass(origin, Mapping): - # construct a validator for the mapping keys and values, e.g. - # Mapping[str, int] is a mapping with string keys and int values - key_inner, value_inner = map(cls.from_typehint, args) - return MappingOf(key_inner, value_inner, type=origin) - elif isinstance(origin, GenericMeta): - # construct a validator for the generic type, see the specific - # Generic* validators for more details - if allow_coercion and issubclass(origin, Coercible) and args: - return GenericCoercedTo(annot) - else: - return GenericInstanceOf(annot) - else: - raise TypeError( - f"Cannot create validator from annotation {annot!r} {origin!r}" - ) - - @abstractmethod - def match(self, value: AnyType, context: dict[str, AnyType]) -> AnyType: - """Match a value against the pattern. - - Parameters - ---------- - value - The value to match the pattern against. - context - A dictionary providing arbitrary context for the pattern matching. - - Returns - ------- - The result of the pattern matching. If the pattern doesn't match - the value, then it must return the `NoMatch` sentinel value. - - """ - ... - - def describe(self, plural=False): - return f"matching {self!r}" - - @abstractmethod - def __eq__(self, other: Pattern) -> bool: ... - - def __invert__(self) -> Not: - """Syntax sugar for matching the inverse of the pattern.""" - return Not(self) - - def __or__(self, other: Pattern) -> AnyOf: - """Syntax sugar for matching either of the patterns. - - Parameters - ---------- - other - The other pattern to match against. - - Returns - ------- - New pattern that matches if either of the patterns match. - - """ - return AnyOf(self, other) - - def __and__(self, other: Pattern) -> AllOf: - """Syntax sugar for matching both of the patterns. - - Parameters - ---------- - other - The other pattern to match against. - - Returns - ------- - New pattern that matches if both of the patterns match. - - """ - return AllOf(self, other) - - def __rshift__(self, other: Deferred) -> Replace: - """Syntax sugar for replacing a value. - - Parameters - ---------- - other - The deferred to use for constructing the replacement value. - - Returns - ------- - New replace pattern. - - """ - return Replace(self, other) - - def __rmatmul__(self, name: str) -> Capture: - """Syntax sugar for capturing a value. - - Parameters - ---------- - name - The name of the capture. - - Returns - ------- - New capture pattern. - - """ - return Capture(name, self) - - def __iter__(self) -> SomeOf: - yield SomeOf(self) - - -class Is(Slotted, Pattern): - """Pattern that matches a value against a reference value. - - Parameters - ---------- - value - The reference value to match against. - - """ - - __slots__ = ("value",) - value: AnyType - - def match(self, value, context): - if value is self.value: - return value - else: - return NoMatch - - -class Any(Slotted, Singleton, Pattern): - """Pattern that accepts any value, basically a no-op.""" - - def match(self, value, context): - return value - - -_any = Any() - - -class Nothing(Slotted, Singleton, Pattern): - """Pattern that no values.""" - - def match(self, value, context): - return NoMatch - - -class Capture(Slotted, Pattern): - """Pattern that captures a value in the context. - - Parameters - ---------- - pattern - The pattern to match against. - key - The key to use in the context if the pattern matches. - - """ - - __slots__ = ("key", "pattern") - key: AnyType - pattern: Pattern - - def __init__(self, key, pat=_any): - if isinstance(key, (Deferred, Resolver)): - key = as_resolver(key) - if isinstance(key, Variable): - key = key.name - else: - raise TypeError("Only variables can be used as capture keys") - super().__init__(key=key, pattern=pattern(pat)) - - def match(self, value, context): - value = self.pattern.match(value, context) - if value is NoMatch: - return NoMatch - context[self.key] = value - return value - - -class Replace(Slotted, Pattern): - """Pattern that replaces a value with the output of another pattern. - - Parameters - ---------- - matcher - The pattern to match against. - replacer - The deferred to use as a replacement. - - """ - - __slots__ = ("matcher", "replacer") - matcher: Pattern - replacer: Resolver - - def __init__(self, matcher, replacer): - super().__init__(matcher=pattern(matcher), replacer=as_resolver(replacer)) - - def match(self, value, context): - value = self.matcher.match(value, context) - if value is NoMatch: - return NoMatch - # use the `_` reserved variable to record the value being replaced - # in the context, so that it can be used in the replacer pattern - context["_"] = value - return self.replacer.resolve(context) - - -def replace(matcher): - """More convenient syntax for replacing a value with the output of a function.""" - - def decorator(replacer): - return Replace(matcher, replacer) - - return decorator - - -class Check(Slotted, Pattern): - """Pattern that checks a value against a predicate. - - Parameters - ---------- - predicate - The predicate to use. - - """ - - __slots__ = ("predicate",) - predicate: Callable - - @classmethod - def __create__(cls, predicate): - if isinstance(predicate, (Deferred, Resolver)): - return DeferredCheck(predicate) - else: - return super().__create__(predicate) - - def __init__(self, predicate): - assert callable(predicate) - super().__init__(predicate=predicate) - - def describe(self, plural=False): - if plural: - return f"values that satisfy {self.predicate.__name__}()" - else: - return f"a value that satisfies {self.predicate.__name__}()" - - def match(self, value, context): - if self.predicate(value): - return value - else: - return NoMatch - - -class DeferredCheck(Slotted, Pattern): - __slots__ = ("resolver",) - resolver: Resolver - - def __init__(self, obj): - super().__init__(resolver=as_resolver(obj)) - - def describe(self, plural=False): - if plural: - return f"values that satisfy {self.resolver!r}" - else: - return f"a value that satisfies {self.resolver!r}" - - def match(self, value, context): - context["_"] = value - if self.resolver.resolve(context): - return value - else: - return NoMatch - - -class Custom(Slotted, Pattern): - """User defined custom matcher function. - - Parameters - ---------- - func - The function to apply. - - """ - - __slots__ = ("func",) - func: Callable - - def __init__(self, func): - assert callable(func) - super().__init__(func=func) - - def match(self, value, context): - return self.func(value, context) - - -class EqualTo(Slotted, Pattern): - """Pattern that checks a value equals to the given value. - - Parameters - ---------- - value - The value to check against. - - """ - - __slots__ = ("value",) - value: AnyType - - @classmethod - def __create__(cls, value): - if isinstance(value, (Deferred, Resolver)): - return DeferredEqualTo(value) - else: - return super().__create__(value) - - def __init__(self, value): - super().__init__(value=value) - - def match(self, value, context): - if value == self.value: - return value - else: - return NoMatch - - def describe(self, plural=False): - return repr(self.value) - - -class DeferredEqualTo(Slotted, Pattern): - """Pattern that checks a value equals to the given value. - - Parameters - ---------- - value - The value to check against. - - """ - - __slots__ = ("resolver",) - resolver: Resolver - - def __init__(self, obj): - super().__init__(resolver=as_resolver(obj)) - - def match(self, value, context): - context["_"] = value - if value == self.resolver.resolve(context): - return value - else: - return NoMatch - - def describe(self, plural=False): - return repr(self.resolver) - - -class Option(Slotted, Pattern): - """Pattern that matches `None` or a value that passes the inner validator. - - Parameters - ---------- - pattern - The inner pattern to use. - - """ - - __slots__ = ("pattern", "default") - pattern: Pattern - default: AnyType - - def __init__(self, pat, default=None): - super().__init__(pattern=pattern(pat), default=default) - - def describe(self, plural=False): - if plural: - return f"optional {self.pattern.describe(plural=True)}" - else: - return f"either None or {self.pattern.describe(plural=False)}" - - def match(self, value, context): - if value is None: - if self.default is None: - return None - else: - return self.default - else: - return self.pattern.match(value, context) - - -def _describe_type(typ, plural=False): - if isinstance(typ, tuple): - *rest, last = typ - rest = ", ".join(_describe_type(t, plural=plural) for t in rest) - last = _describe_type(last, plural=plural) - return f"{rest} or {last}" if rest else last - - name = format_typehint(typ) - if plural: - return f"{name}s" - elif name[0].lower() in "aeiou": - return f"an {name}" - else: - return f"a {name}" - - -class TypeOf(Slotted, Pattern): - """Pattern that matches a value that is of a given type.""" - - __slots__ = ("type",) - type: type - - def __init__(self, typ): - super().__init__(type=typ) - - def describe(self, plural=False): - return f"exactly {_describe_type(self.type, plural=plural)}" - - def match(self, value, context): - if type(value) is self.type: - return value - else: - return NoMatch - - -class SubclassOf(Slotted, Pattern): - """Pattern that matches a value that is a subclass of a given type. - - Parameters - ---------- - type - The type to check against. - - """ - - __slots__ = ("type",) - - def __init__(self, typ): - super().__init__(type=typ) - - def describe(self, plural=False): - if plural: - return f"subclasses of {self.type.__name__}" - else: - return f"a subclass of {self.type.__name__}" - - def match(self, value, context): - if issubclass(value, self.type): - return value - else: - return NoMatch - - -class InstanceOf(Slotted, Singleton, Pattern): - """Pattern that matches a value that is an instance of a given type. - - Parameters - ---------- - types - The type to check against. - - """ - - __slots__ = ("type",) - type: _ClassInfo - - def __init__(self, typ): - super().__init__(type=typ) - - def describe(self, plural=False): - return _describe_type(self.type, plural=plural) - - def match(self, value, context): - if isinstance(value, self.type): - return value - else: - return NoMatch - - def __call__(self, *args, **kwargs): - return Object(self.type, *args, **kwargs) - - -class GenericInstanceOf(Slotted, Pattern): - """Pattern that matches a value that is an instance of a given generic type. - - Parameters - ---------- - typ - The type to check against (must be a generic type). - - Examples - -------- - >>> class MyNumber(Generic[T_co]): - ... value: T_co - ... - ... def __init__(self, value: T_co): - ... self.value = value - ... - ... def __eq__(self, other): - ... return type(self) is type(other) and self.value == other.value - >>> p = GenericInstanceOf(MyNumber[int]) - >>> assert p.match(MyNumber(1), {}) == MyNumber(1) - >>> assert p.match(MyNumber(1.0), {}) is NoMatch - >>> - >>> p = GenericInstanceOf(MyNumber[float]) - >>> assert p.match(MyNumber(1.0), {}) == MyNumber(1.0) - >>> assert p.match(MyNumber(1), {}) is NoMatch - - """ - - __slots__ = ("type", "origin", "fields") - origin: type - fields: FrozenDict[str, Pattern] - - def __init__(self, typ): - origin = get_origin(typ) - typevars = get_bound_typevars(typ) - - fields = {} - for var, (attr, type_) in typevars.items(): - if not var.__covariant__: - raise TypeError( - f"Typevar {var} is not covariant, cannot use it in a GenericInstanceOf" - ) - fields[attr] = Pattern.from_typehint(type_, allow_coercion=False) - - super().__init__(type=typ, origin=origin, fields=frozendict(fields)) - - def describe(self, plural=False): - return _describe_type(self.type, plural=plural) - - def match(self, value, context): - if not isinstance(value, self.origin): - return NoMatch - - for name, pattern in self.fields.items(): - attr = getattr(value, name) - if pattern.match(attr, context) is NoMatch: - return NoMatch - - return value - - -class LazyInstanceOf(Slotted, Pattern): - """A version of `InstanceOf` that accepts qualnames instead of imported classes. - - Useful for delaying imports. - - Parameters - ---------- - types - The types to check against. - - """ - - __fields__ = ("qualname", "package") - __slots__ = ("qualname", "package", "loaded") - qualname: str - package: str - loaded: type - - def __init__(self, qualname): - package = unalias_package(qualname.split(".", 1)[0]) - super().__init__(qualname=qualname, package=package) - - def match(self, value, context): - if hasattr(self, "loaded"): - return value if isinstance(value, self.loaded) else NoMatch - - for klass in type(value).__mro__: - package = klass.__module__.split(".", 1)[0] - if package == self.package: - typ = import_object(self.qualname) - object.__setattr__(self, "loaded", typ) - return value if isinstance(value, typ) else NoMatch - - return NoMatch - - -class CoercedTo(Slotted, Pattern, Generic[T_co]): - """Force a value to have a particular Python type. - - If a Coercible subclass is passed, the `__coerce__` method will be used to - coerce the value. Otherwise, the type will be called with the value as the - only argument. - - Parameters - ---------- - type - The type to coerce to. - - """ - - __slots__ = ("type", "func") - type: T_co - - def __init__(self, type): - func = type.__coerce__ if issubclass(type, Coercible) else type - super().__init__(type=type, func=func) - - def describe(self, plural=False): - type = _describe_type(self.type, plural=False) - if plural: - return f"coercibles to {type}" - else: - return f"coercible to {type}" - - def match(self, value, context): - try: - value = self.func(value) - except (TypeError, CoercionError): - return NoMatch - - if isinstance(value, self.type): - return value - else: - return NoMatch - - def __call__(self, *args, **kwargs): - return Object(self.type, *args, **kwargs) - - -class GenericCoercedTo(Slotted, Pattern): - """Force a value to have a particular generic Python type. - - Parameters - ---------- - typ - The type to coerce to. Must be a generic type with bound typevars. - - Examples - -------- - >>> from typing import Generic, TypeVar - >>> - >>> T = TypeVar("T", covariant=True) - >>> - >>> class MyNumber(Coercible, Generic[T]): - ... __slots__ = ("value",) - ... - ... def __init__(self, value): - ... self.value = value - ... - ... def __eq__(self, other): - ... return type(self) is type(other) and self.value == other.value - ... - ... @classmethod - ... def __coerce__(cls, value, T=None): - ... if issubclass(T, int): - ... return cls(int(value)) - ... elif issubclass(T, float): - ... return cls(float(value)) - ... else: - ... raise CoercionError(f"Cannot coerce to {T}") - >>> p = GenericCoercedTo(MyNumber[int]) - >>> assert p.match(3.14, {}) == MyNumber(3) - >>> assert p.match("15", {}) == MyNumber(15) - >>> - >>> p = GenericCoercedTo(MyNumber[float]) - >>> assert p.match(3.14, {}) == MyNumber(3.14) - >>> assert p.match("15", {}) == MyNumber(15.0) - - """ - - __slots__ = ("origin", "params", "checker") - origin: type - params: FrozenDict[str, type] - checker: GenericInstanceOf - - def __init__(self, target): - origin = get_origin(target) - checker = GenericInstanceOf(target) - params = frozendict(get_type_params(target)) - super().__init__(origin=origin, params=params, checker=checker) - - def describe(self, plural=False): - if plural: - return f"coercibles to {self.checker.describe(plural=False)}" - else: - return f"coercible to {self.checker.describe(plural=False)}" - - def match(self, value, context): - try: - value = self.origin.__coerce__(value, **self.params) - except CoercionError: - return NoMatch - - if self.checker.match(value, context) is NoMatch: - return NoMatch - - return value - - -class Not(Slotted, Pattern): - """Pattern that matches a value that does not match a given pattern. - - Parameters - ---------- - pattern - The pattern which the value should not match. - - """ - - __slots__ = ("pattern",) - pattern: Pattern - - def __init__(self, inner): - super().__init__(pattern=pattern(inner)) - - def describe(self, plural=False): - if plural: - return f"anything except {self.pattern.describe(plural=True)}" - else: - return f"anything except {self.pattern.describe(plural=False)}" - - def match(self, value, context): - if self.pattern.match(value, context) is NoMatch: - return value - else: - return NoMatch - - -class AnyOf(Slotted, Pattern): - """Pattern that if any of the given patterns match. - - Parameters - ---------- - patterns - The patterns to match against. The first pattern that matches will be - returned. - - """ - - __slots__ = ("patterns",) - patterns: tuple[Pattern, ...] - - def __init__(self, *pats): - patterns = tuple(map(pattern, pats)) - super().__init__(patterns=patterns) - - def describe(self, plural=False): - *rest, last = self.patterns - rest = ", ".join(p.describe(plural=plural) for p in rest) - last = last.describe(plural=plural) - return f"{rest} or {last}" if rest else last - - def match(self, value, context): - for pattern in self.patterns: - result = pattern.match(value, context) - if result is not NoMatch: - return result - return NoMatch - - -class AllOf(Slotted, Pattern): - """Pattern that matches if all of the given patterns match. - - Parameters - ---------- - patterns - The patterns to match against. The value will be passed through each - pattern in order. The changes applied to the value propagate through the - patterns. - - """ - - __slots__ = ("patterns",) - patterns: tuple[Pattern, ...] - - def __init__(self, *pats): - patterns = tuple(map(pattern, pats)) - super().__init__(patterns=patterns) - - def describe(self, plural=False): - *rest, last = self.patterns - rest = ", ".join(p.describe(plural=plural) for p in rest) - last = last.describe(plural=plural) - return f"{rest} then {last}" if rest else last - - def match(self, value, context): - for pattern in self.patterns: - value = pattern.match(value, context) - if value is NoMatch: - return NoMatch - return value - - -class Length(Slotted, Pattern): - """Pattern that matches if the length of a value is within a given range. - - Parameters - ---------- - exactly - The exact length of the value. If specified, `at_least` and `at_most` - must be None. - at_least - The minimum length of the value. - at_most - The maximum length of the value. - - """ - - __slots__ = ("at_least", "at_most") - at_least: int - at_most: int - - def __init__( - self, - exactly: Optional[int] = None, - at_least: Optional[int] = None, - at_most: Optional[int] = None, - ): - if exactly is not None: - if at_least is not None or at_most is not None: - raise ValueError("Can't specify both exactly and at_least/at_most") - at_least = exactly - at_most = exactly - super().__init__(at_least=at_least, at_most=at_most) - - def describe(self, plural=False): - if self.at_least is not None and self.at_most is not None: - if self.at_least == self.at_most: - return f"with length exactly {self.at_least}" - else: - return f"with length between {self.at_least} and {self.at_most}" - elif self.at_least is not None: - return f"with length at least {self.at_least}" - elif self.at_most is not None: - return f"with length at most {self.at_most}" - else: - return "with any length" - - def match(self, value, context): - length = len(value) - if self.at_least is not None and length < self.at_least: - return NoMatch - if self.at_most is not None and length > self.at_most: - return NoMatch - return value - - -class Between(Slotted, Pattern): - """Match a value between two bounds. - - Parameters - ---------- - lower - The lower bound. - upper - The upper bound. - - """ - - __slots__ = ("lower", "upper") - lower: float - upper: float - - def __init__(self, lower: float = -math.inf, upper: float = math.inf): - super().__init__(lower=lower, upper=upper) - - def match(self, value, context): - if self.lower <= value <= self.upper: - return value - else: - return NoMatch - - -class Contains(Slotted, Pattern): - """Pattern that matches if a value contains a given value. - - Parameters - ---------- - needle - The item that the passed value should contain. - - """ - - __slots__ = ("needle",) - needle: AnyType - - def __init__(self, needle): - super().__init__(needle=needle) - - def describe(self, plural=False): - return f"containing {self.needle!r}" - - def match(self, value, context): - if self.needle in value: - return value - else: - return NoMatch - - -class IsIn(Slotted, Pattern): - """Pattern that matches if a value is in a given set. - - Parameters - ---------- - haystack - The set of values that the passed value should be in. - - """ - - __slots__ = ("haystack",) - haystack: frozenset - - def __init__(self, haystack): - super().__init__(haystack=frozenset(haystack)) - - def describe(self, plural=False): - return f"in {set(self.haystack)!r}" - - def match(self, value, context): - if value in self.haystack: - return value - else: - return NoMatch - - -class SequenceOf(Slotted, Pattern): - """Pattern that matches if all of the items in a sequence match a given pattern. - - Specialization of the more flexible GenericSequenceOf pattern which uses two - additional patterns to possibly coerce the sequence type and to match on - the length of the sequence. - - Parameters - ---------- - item - The pattern to match against each item in the sequence. - type - The type to coerce the sequence to. Defaults to tuple. - - """ - - __slots__ = ("item", "type") - item: Pattern - type: type - - def __init__(self, item, type=list): - super().__init__(item=pattern(item), type=type) - - def describe(self, plural=False): - typ = _describe_type(self.type, plural=plural) - item = self.item.describe(plural=True) - return f"{typ} of {item}" - - def match(self, values, context): - if not is_iterable(values): - return NoMatch - - if self.item == _any: - # optimization to avoid unnecessary iteration - result = values - else: - result = [] - for item in values: - item = self.item.match(item, context) - if item is NoMatch: - return NoMatch - result.append(item) - - return self.type(result) - - -class GenericSequenceOf(Slotted, Pattern): - """Pattern that matches if all of the items in a sequence match a given pattern. - - Parameters - ---------- - item - The pattern to match against each item in the sequence. - type - The type to coerce the sequence to. Defaults to list. - exactly - The exact length of the sequence. - at_least - The minimum length of the sequence. - at_most - The maximum length of the sequence. - - """ - - __slots__ = ("item", "type", "length") - item: Pattern - type: Pattern - length: Length - - def __init__( - self, - item: Pattern, - type: type = list, - exactly: Optional[int] = None, - at_least: Optional[int] = None, - at_most: Optional[int] = None, - ): - item = pattern(item) - type = CoercedTo(type) - length = Length(exactly=exactly, at_least=at_least, at_most=at_most) - super().__init__(item=item, type=type, length=length) - - def match(self, values, context): - if not is_iterable(values): - return NoMatch - - if self.item == _any: - # optimization to avoid unnecessary iteration - result = values - else: - result = [] - for value in values: - value = self.item.match(value, context) - if value is NoMatch: - return NoMatch - result.append(value) - - result = self.type.match(result, context) - if result is NoMatch: - return NoMatch - - return self.length.match(result, context) - - -class GenericMappingOf(Slotted, Pattern): - """Pattern that matches if all of the keys and values match the given patterns. - - Parameters - ---------- - key - The pattern to match the keys against. - value - The pattern to match the values against. - type - The type to coerce the mapping to. Defaults to dict. - - """ - - __slots__ = ("key", "value", "type") - key: Pattern - value: Pattern - type: Pattern - - def __init__(self, key: Pattern, value: Pattern, type: type = dict): - super().__init__(key=pattern(key), value=pattern(value), type=CoercedTo(type)) - - def match(self, value, context): - if not isinstance(value, Mapping): - return NoMatch - - result = {} - for k, v in value.items(): - if (k := self.key.match(k, context)) is NoMatch: - return NoMatch - if (v := self.value.match(v, context)) is NoMatch: - return NoMatch - result[k] = v - - result = self.type.match(result, context) - if result is NoMatch: - return NoMatch - - return result - - -MappingOf = GenericMappingOf - - -class Attrs(Slotted, Pattern): - __slots__ = ("fields",) - fields: FrozenDict[str, Pattern] - - def __init__(self, **fields): - fields = frozendict(toolz.valmap(pattern, fields)) - super().__init__(fields=fields) - - def match(self, value, context): - for attr, pattern in self.fields.items(): - if not hasattr(value, attr): - return NoMatch - - v = getattr(value, attr) - if match(pattern, v, context) is NoMatch: - return NoMatch - - return value - - -class Object(Slotted, Pattern): - """Pattern that matches if the object has the given attributes and they match the given patterns. - - The type must conform the structural pattern matching protocol, e.g. it must have a - __match_args__ attribute that is a tuple of the names of the attributes to match. - - Parameters - ---------- - type - The type of the object. - *args - The positional arguments to match against the attributes of the object. - **kwargs - The keyword arguments to match against the attributes of the object. - - """ - - __slots__ = ("type", "args", "kwargs") - type: Pattern - args: tuple[Pattern, ...] - kwargs: FrozenDict[str, Pattern] - - @classmethod - def __create__(cls, type, *args, **kwargs): - if not args and not kwargs: - return InstanceOf(type) - return super().__create__(type, *args, **kwargs) - - def __init__(self, typ, *args, **kwargs): - if isinstance(typ, type) and len(typ.__match_args__) < len(args): - raise ValueError( - "The type to match has fewer `__match_args__` than the number " - "of positional arguments in the pattern" - ) - typ = pattern(typ) - args = tuple(map(pattern, args)) - kwargs = frozendict(toolz.valmap(pattern, kwargs)) - super().__init__(type=typ, args=args, kwargs=kwargs) - - def match(self, value, context): - if self.type.match(value, context) is NoMatch: - return NoMatch - - # the pattern requirest more positional arguments than the object has - if len(value.__match_args__) < len(self.args): - return NoMatch - patterns = dict(zip(value.__match_args__, self.args)) - patterns.update(self.kwargs) - - fields = {} - changed = False - for name, pattern in patterns.items(): - try: - attr = getattr(value, name) - except AttributeError: - return NoMatch - - result = pattern.match(attr, context) - if result is NoMatch: - return NoMatch - elif result != attr: - changed = True - fields[name] = result - else: - fields[name] = attr - - if changed: - return type(value)(**fields) - else: - return value - - -class Node(Slotted, Pattern): - __slots__ = ("type", "each_arg") - type: Pattern - - def __init__(self, type, each_arg): - super().__init__(type=pattern(type), each_arg=pattern(each_arg)) - - def match(self, value, context): - if self.type.match(value, context) is NoMatch: - return NoMatch - - newargs = {} - changed = False - for name, arg in zip(value.__argnames__, value.__args__): - result = self.each_arg.match(arg, context) - if result is NoMatch: - newargs[name] = arg - else: - newargs[name] = result - changed = True - - if changed: - return value.__class__(**newargs) - else: - return value - - -class CallableWith(Slotted, Pattern): - __slots__ = ("args", "return_") - args: tuple - return_: AnyType - - def __init__(self, args, return_=_any): - super().__init__(args=tuple(args), return_=return_) - - def match(self, value, context): - from ibis.common.annotations import EMPTY, annotated - - if not callable(value): - return NoMatch - - fn = annotated(self.args, self.return_, value) - - has_varargs = False - positional, required_positional = [], [] - for p in fn.__signature__.parameters.values(): - if p.kind in (Parameter.POSITIONAL_ONLY, Parameter.POSITIONAL_OR_KEYWORD): - positional.append(p) - if p.default is EMPTY: - required_positional.append(p) - elif p.kind is Parameter.KEYWORD_ONLY and p.default is EMPTY: - raise TypeError( - "Callable has mandatory keyword-only arguments which cannot be specified" - ) - elif p.kind is Parameter.VAR_POSITIONAL: - has_varargs = True - - if len(required_positional) > len(self.args): - # Callable has more positional arguments than expected") - return NoMatch - elif len(positional) < len(self.args) and not has_varargs: - # Callable has less positional arguments than expected") - return NoMatch - else: - return fn - - -class SomeOf(Slotted, Pattern): - __slots__ = ("pattern", "delimiter") - - @classmethod - def __create__(cls, *args, **kwargs): - if len(args) == 1: - return super().__create__(*args, **kwargs) - else: - return SomeChunksOf(*args, **kwargs) - - def __init__(self, item, **kwargs): - pattern = GenericSequenceOf(item, **kwargs) - delimiter = pattern.item - super().__init__(pattern=pattern, delimiter=delimiter) - - def match(self, values, context): - return self.pattern.match(values, context) - - -class SomeChunksOf(Slotted, Pattern): - """Pattern that unpacks a value into its elements. - - Designed to be used inside a `PatternList` pattern with the `*` syntax. - """ - - __slots__ = ("pattern", "delimiter") - - def __init__(self, *args, **kwargs): - pattern = GenericSequenceOf(PatternList(args), **kwargs) - delimiter = pattern.item.patterns[0] - super().__init__(pattern=pattern, delimiter=delimiter) - - def chunk(self, values, context): - chunk = [] - for item in values: - if self.delimiter.match(item, context) is NoMatch: - chunk.append(item) - else: - if chunk: # only yield if there are items in the chunk - yield chunk - chunk = [item] # start a new chunk with the delimiter - if chunk: - yield chunk - - def match(self, values, context): - chunks = self.chunk(values, context) - result = self.pattern.match(chunks, context) - if result is NoMatch: - return NoMatch - else: - return [el for lst in result for el in lst] - - -def _maybe_unwrap_capture(obj): - return obj.pattern if isinstance(obj, Capture) else obj - - -class PatternList(Slotted, Pattern): - """Pattern that matches if the respective items in a tuple match the given patterns. - - Parameters - ---------- - fields - The patterns to match the respective items in the tuple. - - """ - - __slots__ = ("patterns", "type") - patterns: tuple[Pattern, ...] - type: type - - @classmethod - def __create__(cls, patterns, type=list): - if patterns == (): - return EqualTo(patterns) - - patterns = tuple(map(pattern, patterns)) - for pat in patterns: - pat = _maybe_unwrap_capture(pat) - if isinstance(pat, (SomeOf, SomeChunksOf)): - return VariadicPatternList(patterns, type) - - return super().__create__(patterns, type) - - def __init__(self, patterns, type): - super().__init__(patterns=patterns, type=type) - - def describe(self, plural=False): - patterns = ", ".join(f.describe(plural=False) for f in self.patterns) - if plural: - return f"tuples of ({patterns})" - else: - return f"a tuple of ({patterns})" - - def match(self, values, context): - if not is_iterable(values): - return NoMatch - - if len(values) != len(self.patterns): - return NoMatch - - result = [] - for pattern, value in zip(self.patterns, values): - value = pattern.match(value, context) - if value is NoMatch: - return NoMatch - result.append(value) - - return self.type(result) - - -class VariadicPatternList(Slotted, Pattern): - __slots__ = ("patterns", "type") - patterns: tuple[Pattern, ...] - type: type - - def __init__(self, patterns, type=list): - patterns = tuple(map(pattern, patterns)) - super().__init__(patterns=patterns, type=type) - - def match(self, value, context): - if not self.patterns: - return NoMatch if value else [] - - it = RewindableIterator(value) - result = [] - - following_patterns = self.patterns[1:] + (Nothing(),) - for current, following in zip(self.patterns, following_patterns): - original = current - current = _maybe_unwrap_capture(current) - following = _maybe_unwrap_capture(following) - - if isinstance(current, (SomeOf, SomeChunksOf)): - if isinstance(following, (SomeOf, SomeChunksOf)): - following = following.delimiter - - matches = [] - while True: - it.checkpoint() - try: - item = next(it) - except StopIteration: - break - - res = following.match(item, context) - if res is NoMatch: - matches.append(item) - else: - it.rewind() - break - - res = original.match(matches, context) - if res is NoMatch: - return NoMatch - else: - result.extend(res) - else: - try: - item = next(it) - except StopIteration: - return NoMatch - - res = original.match(item, context) - if res is NoMatch: - return NoMatch - else: - result.append(res) - - return self.type(result) - - -def NoneOf(*args) -> Pattern: - """Match none of the passed patterns.""" - return Not(AnyOf(*args)) - - -def ListOf(pattern): - """Match a list of items matching the given pattern.""" - return SequenceOf(pattern, type=list) - - -def TupleOf(pattern): - """Match a variable-length tuple of items matching the given pattern.""" - return SequenceOf(pattern, type=tuple) - - -def DictOf(key_pattern, value_pattern): - """Match a dictionary with keys and values matching the given patterns.""" - return MappingOf(key_pattern, value_pattern, type=dict) - - -def FrozenDictOf(key_pattern, value_pattern): - """Match a frozendict with keys and values matching the given patterns.""" - return MappingOf(key_pattern, value_pattern, type=frozendict) - - -def pattern(obj: AnyType) -> Pattern: - """Create a pattern from various types. - - Not that if a Coercible type is passed as argument, the constructed pattern - won't attempt to coerce the value during matching. In order to allow type - coercions use `Pattern.from_typehint()` factory method. - - Parameters - ---------- - obj - The object to create a pattern from. Can be a pattern, a type, a callable, - a mapping, an iterable or a value. - - Examples - -------- - >>> assert pattern(Any()) == Any() - >>> assert pattern(int) == InstanceOf(int) - >>> - >>> @pattern - ... def as_int(x, context): - ... return int(x) - >>> - >>> assert as_int.match(1, {}) == 1 - - Returns - ------- - The constructed pattern. - - """ - if obj is Ellipsis: - return _any - elif isinstance(obj, Pattern): - return obj - elif isinstance(obj, (Deferred, Resolver)): - return Capture(obj) - elif isinstance(obj, Mapping): - return EqualTo(FrozenDict(obj)) - elif isinstance(obj, Sequence): - if isinstance(obj, (str, bytes)): - return EqualTo(obj) - else: - return PatternList(obj, type=type(obj)) - elif isinstance(obj, type): - return InstanceOf(obj) - elif get_origin(obj): - return Pattern.from_typehint(obj, allow_coercion=False) - elif callable(obj): - return Custom(obj) - else: - return EqualTo(obj) - - -def match( - pat: Pattern, value: AnyType, context: Optional[dict[str, AnyType]] = None -) -> Any: - """Match a value against a pattern. - - Parameters - ---------- - pat - The pattern to match against. - value - The value to match. - context - Arbitrary mapping of values to be used while matching. - - Returns - ------- - The matched value if the pattern matches, otherwise :obj:`NoMatch`. - - Examples - -------- - >>> assert match(Any(), 1) == 1 - >>> assert match(1, 1) == 1 - >>> assert match(1, 2) is NoMatch - >>> assert match(1, 1, context={"x": 1}) == 1 - >>> assert match(1, 2, context={"x": 1}) is NoMatch - >>> assert match([1, int], [1, 2]) == [1, 2] - >>> assert match([1, int, "a" @ InstanceOf(str)], [1, 2, "three"]) == [ - ... 1, - ... 2, - ... "three", - ... ] - - """ - if context is None: - context = {} - - pat = pattern(pat) - result = pat.match(value, context) - return NoMatch if result is NoMatch else result - - -IsTruish = Check(lambda x: bool(x)) -IsNumber = InstanceOf(numbers.Number) & ~InstanceOf(bool) -IsString = InstanceOf(str) - -As = CoercedTo -Eq = EqualTo -In = IsIn -If = Check -Some = SomeOf diff --git a/ibis/common/selectors.py b/ibis/common/selectors.py index f7558fb0a92c..28d14bcc76a8 100644 --- a/ibis/common/selectors.py +++ b/ibis/common/selectors.py @@ -3,8 +3,8 @@ import abc from typing import TYPE_CHECKING -from ibis.common.bases import Abstract -from ibis.common.grounds import Concrete +from koerce import Annotable + from ibis.common.typing import VarTuple # noqa: TCH001 if TYPE_CHECKING: @@ -13,9 +13,7 @@ import ibis.expr.types as ir -class Expandable(Abstract): - __slots__ = () - +class Expandable(Annotable, immutable=True): @abc.abstractmethod def expand(self, table: ir.Table) -> Sequence[ir.Value]: """Expand `table` into value expressions that match the selector. @@ -33,7 +31,7 @@ def expand(self, table: ir.Table) -> Sequence[ir.Value]: """ -class Selector(Concrete, Expandable): +class Selector(Expandable): """A column selector.""" @abc.abstractmethod diff --git a/ibis/common/temporal.py b/ibis/common/temporal.py index 1fa3cfcad9aa..776d6e67520e 100644 --- a/ibis/common/temporal.py +++ b/ibis/common/temporal.py @@ -4,7 +4,7 @@ import datetime import numbers from decimal import Decimal -from enum import Enum, EnumMeta +from enum import Enum import dateutil.parser import dateutil.tz @@ -12,16 +12,10 @@ from public import public from ibis import util -from ibis.common.bases import AbstractMeta from ibis.common.dispatch import lazy_singledispatch -from ibis.common.patterns import Coercible, CoercionError -class AbstractEnumMeta(EnumMeta, AbstractMeta): - pass - - -class Unit(Coercible, Enum, metaclass=AbstractEnumMeta): +class Unit(Enum): @classmethod def __coerce__(cls, value): if isinstance(value, cls): @@ -35,7 +29,7 @@ def from_string(cls, value): if isinstance(value, Unit): value = value.value elif not isinstance(value, str): - raise CoercionError(f"Unable to coerce {value} to {cls.__name__}") + raise ValueError(f"Unable to construct {cls.__name__} from {value}") # first look for aliases value = cls.aliases().get(value, value) @@ -52,7 +46,7 @@ def from_string(cls, value): try: return cls[value.upper()] except KeyError: - raise CoercionError(f"Unable to coerce {value} to {cls.__name__}") + raise ValueError(f"Unable to construct {cls.__name__} from {value}") @classmethod def aliases(cls): diff --git a/ibis/common/tests/test_annotations.py b/ibis/common/tests/test_annotations.py deleted file mode 100644 index 6e4a22f3d24d..000000000000 --- a/ibis/common/tests/test_annotations.py +++ /dev/null @@ -1,496 +0,0 @@ -from __future__ import annotations - -import inspect -import pickle -from typing import Annotated, Union - -import pytest - -from ibis.common.annotations import ( - Argument, - Attribute, - Parameter, - Signature, - ValidationError, - annotated, - argument, - attribute, - optional, -) -from ibis.common.patterns import ( - Any, - CoercedTo, - InstanceOf, - NoMatch, - Option, - TupleOf, - pattern, -) - -is_int = InstanceOf(int) - - -def test_argument_factory(): - a = argument(is_int, default=1, typehint=int) - assert a == Argument(is_int, default=1, typehint=int) - - a = argument(is_int, default=1) - assert a == Argument(is_int, default=1) - - a = argument(is_int) - assert a == Argument(is_int) - - -def test_attribute_factory(): - a = attribute(is_int, default=1) - assert a == Attribute(is_int, default=1) - - a = attribute(is_int) - assert a == Attribute(is_int) - - a = attribute(default=2) - assert a == Attribute(default=2) - - a = attribute(int, default=2) - assert a == Attribute(int, default=2) - - -def test_annotations_are_immutable(): - a = argument(is_int, default=1) - with pytest.raises(AttributeError): - a.pattern = Any() - with pytest.raises(AttributeError): - a.default = 2 - - a = attribute(is_int, default=1) - with pytest.raises(AttributeError): - a.pattern = Any() - with pytest.raises(AttributeError): - a.default = 2 - - -def test_annotations_are_not_hashable(): - # in order to use the with mutable defaults - a = argument(is_int, default=1) - with pytest.raises(TypeError, match="unhashable type: 'Argument'"): - hash(a) - - a = attribute(is_int, default=1) - with pytest.raises(TypeError, match="unhashable type: 'Attribute'"): - hash(a) - - -def test_argument_repr(): - argument = Argument(is_int, typehint=int, default=None) - assert repr(argument) == ( - "Argument(pattern=InstanceOf(type=), default=None, " - "typehint=, kind=<_ParameterKind.POSITIONAL_OR_KEYWORD: 1>)" - ) - - -def test_default_argument(): - annotation = Argument(pattern=lambda x, context: int(x), default=3) - assert annotation.pattern.match(1, {}) == 1 - - -@pytest.mark.parametrize( - ("default", "expected"), - [(None, None), (0, 0), ("default", "default")], -) -def test_optional_argument(default, expected): - annotation = optional(default=default) - assert annotation.pattern.match(None, {}) == expected - - -@pytest.mark.parametrize( - ("argument", "value", "expected"), - [ - (optional(Any(), default=None), None, None), - (optional(Any(), default=None), "three", "three"), - (optional(Any(), default=1), None, 1), - (optional(CoercedTo(int), default=11), None, 11), - (optional(CoercedTo(int), default=None), None, None), - (optional(CoercedTo(int), default=None), 18, 18), - (optional(CoercedTo(str), default=None), "caracal", "caracal"), - ], -) -def test_valid_optional(argument, value, expected): - assert argument.pattern.match(value, {}) == expected - - -def test_attribute_default_value(): - class Foo: - a = 10 - - assert not Attribute().has_default() - - field = Attribute(default=lambda self: self.a + 10) - assert field.has_default() - assert field == field - - assert field.get_default("b", Foo) == 20 - - field2 = Attribute(pattern=lambda x, this: str(x), default=lambda self: self.a) - assert field2.has_default() - assert field != field2 - assert field2.get_default("b", Foo) == "10" - - -def test_parameter(): - def fn(x, this): - return int(x) + this["other"] - - annot = argument(fn) - p = Parameter.from_argument("test", annotation=annot) - - assert p.annotation is annot - assert p.default is inspect.Parameter.empty - assert p.annotation.pattern.match("2", {"other": 1}) == 3 - - ofn = optional(fn) - op = Parameter.from_argument("test", annotation=ofn) - assert op.annotation.pattern == Option(fn, default=None) - assert op.default is None - assert op.annotation.pattern.match(None, {"other": 1}) is None - - with pytest.raises(TypeError, match="annotation must be an instance of Argument"): - Parameter.from_argument("wrong", annotation=Attribute(lambda x, context: x)) - - -def test_signature(): - def to_int(x, this): - return int(x) - - def add_other(x, this): - return int(x) + this["other"] - - other = Parameter.from_argument("other", annotation=Argument(to_int)) - this = Parameter.from_argument("this", annotation=Argument(add_other)) - - sig = Signature(parameters=[other, this]) - assert sig.validate(None, args=(1, 2), kwargs={}) == {"other": 1, "this": 3} - assert sig.validate(None, args=(), kwargs=dict(other=1, this=2)) == { - "other": 1, - "this": 3, - } - assert sig.validate(None, args=(), kwargs=dict(this=2, other=1)) == { - "other": 1, - "this": 3, - } - - -def test_signature_from_callable(): - def test(a: int, b: int, c: int = 1): ... - - sig = Signature.from_callable(test) - assert sig.validate(test, args=(2, 3), kwargs={}) == {"a": 2, "b": 3, "c": 1} - - with pytest.raises(ValidationError): - sig.validate(test, args=(2, 3, "4"), kwargs={}) - - args, kwargs = sig.unbind(sig.validate(test, args=(2, 3), kwargs={})) - assert args == (2, 3, 1) - assert kwargs == {} - - -def test_signature_from_callable_with_varargs(): - def test(a: int, b: int, *args: int): ... - - sig = Signature.from_callable(test) - assert sig.validate(test, args=(2, 3), kwargs={}) == {"a": 2, "b": 3, "args": ()} - assert sig.validate(test, args=(2, 3, 4), kwargs={}) == { - "a": 2, - "b": 3, - "args": (4,), - } - assert sig.validate(test, args=(2, 3, 4, 5), kwargs={}) == { - "a": 2, - "b": 3, - "args": (4, 5), - } - assert sig.parameters["a"].annotation.typehint is int - assert sig.parameters["b"].annotation.typehint is int - assert sig.parameters["args"].annotation.typehint is int - - with pytest.raises(ValidationError): - sig.validate(test, args=(2, 3, 4, "5"), kwargs={}) - - args, kwargs = sig.unbind(sig.validate(test, args=(2, 3, 4, 5), kwargs={})) - assert args == (2, 3, 4, 5) - assert kwargs == {} - - -def test_signature_from_callable_with_positional_only_arguments(snapshot): - def test(a: int, b: int, /, c: int = 1): ... - - sig = Signature.from_callable(test) - assert sig.validate(test, args=(2, 3), kwargs={}) == {"a": 2, "b": 3, "c": 1} - assert sig.validate(test, args=(2, 3, 4), kwargs={}) == {"a": 2, "b": 3, "c": 4} - assert sig.validate(test, args=(2, 3), kwargs=dict(c=4)) == {"a": 2, "b": 3, "c": 4} - - with pytest.raises( - ValidationError, match=r"test\(1, b=2\).+positional[- ]only.+keyword" - ): - sig.validate(test, args=(1,), kwargs=dict(b=2)) - - args, kwargs = sig.unbind(sig.validate(test, args=(2, 3), kwargs={})) - assert args == (2, 3, 1) - assert kwargs == {} - - -def test_signature_from_callable_with_keyword_only_arguments(snapshot): - def test(a: int, b: int, *, c: float, d: float = 0.0): ... - - sig = Signature.from_callable(test) - assert sig.validate(test, args=(2, 3), kwargs=dict(c=4.0)) == { - "a": 2, - "b": 3, - "c": 4.0, - "d": 0.0, - } - assert sig.validate(test, args=(2, 3), kwargs=dict(c=4.0, d=5.0)) == { - "a": 2, - "b": 3, - "c": 4.0, - "d": 5.0, - } - - with pytest.raises( - ValidationError, match="missing a required (?:keyword-only )?argument: 'c'" - ) as excinfo: - sig.validate(test, args=(2, 3), kwargs={}) - - with pytest.raises(ValidationError) as excinfo: - sig.validate(test, args=(2, 3, 4), kwargs={}) - snapshot.assert_match(str(excinfo.value), "too_many_positional_arguments.txt") - - args, kwargs = sig.unbind(sig.validate(test, args=(2, 3), kwargs=dict(c=4.0))) - assert args == (2, 3) - assert kwargs == {"c": 4.0, "d": 0.0} - - -def test_signature_unbind(): - def to_int(x, this): - return int(x) - - def add_other(x, this): - return int(x) + this["other"] - - other = Parameter.from_argument("other", annotation=Argument(to_int)) - this = Parameter.from_argument("this", annotation=Argument(add_other)) - - sig = Signature(parameters=[other, this]) - params = sig.validate(None, args=(1,), kwargs=dict(this=2)) - - args, kwargs = sig.unbind(params) - assert args == (1, 3) - assert kwargs == {} - - -a = Parameter.from_argument("a", annotation=Argument(CoercedTo(float))) -b = Parameter.from_argument("b", annotation=Argument(CoercedTo(float))) -c = Parameter.from_argument("c", annotation=Argument(CoercedTo(float), default=0)) -d = Parameter.from_argument( - "d", - annotation=Argument(TupleOf(CoercedTo(float)), default=()), -) -e = Parameter.from_argument( - "e", annotation=Argument(Option(CoercedTo(float)), default=None) -) -sig = Signature(parameters=[a, b, c, d, e]) - - -@pytest.mark.parametrize("d", [(), (5, 6, 7)]) -def test_signature_unbind_with_empty_variadic(d): - params = sig.validate(None, args=(1, 2, 3, d), kwargs=dict(e=4)) - assert params == {"a": 1.0, "b": 2.0, "c": 3.0, "d": d, "e": 4.0} - - args, kwargs = sig.unbind(params) - assert args == (1.0, 2.0, 3.0, tuple(map(float, d)), 4.0) - assert kwargs == {} - - params_again = sig.validate(None, args=args, kwargs=kwargs) - assert params_again == params - - -def test_annotated_function(): - @annotated(a=InstanceOf(int), b=InstanceOf(int), c=InstanceOf(int)) - def test(a, b, c=1): - return a + b + c - - assert test(2, 3) == 6 - assert test(2, 3, 4) == 9 - assert test(2, 3, c=4) == 9 - assert test(a=2, b=3, c=4) == 9 - - with pytest.raises(ValidationError): - test(2, 3, c="4") - - @annotated(a=InstanceOf(int)) - def test(a, b, c=1): - return (a, b, c) - - assert test(2, "3") == (2, "3", 1) - - -def test_annotated_function_with_type_annotations(): - @annotated() - def test(a: int, b: int, c: int = 1): - return a + b + c - - assert test(2, 3) == 6 - - @annotated - def test(a: int, b: int, c: int = 1): - return a + b + c - - assert test(2, 3) == 6 - - @annotated - def test(a: int, b, c=1): - return (a, b, c) - - assert test(2, 3, "4") == (2, 3, "4") - - -def test_annotated_function_with_return_type_annotation(): - @annotated - def test_ok(a: int, b: int, c: int = 1) -> int: - return a + b + c - - @annotated - def test_wrong(a: int, b: int, c: int = 1) -> int: - return "invalid result" - - assert test_ok(2, 3) == 6 - with pytest.raises(ValidationError): - test_wrong(2, 3) - - -def test_annotated_function_with_keyword_overrides(): - @annotated(b=InstanceOf(float)) - def test(a: int, b: int, c: int = 1): - return a + b + c - - with pytest.raises(ValidationError): - test(2, 3) - - assert test(2, 3.0) == 6.0 - - -def test_annotated_function_with_list_overrides(): - @annotated([InstanceOf(int), InstanceOf(int), InstanceOf(float)]) - def test(a: int, b: int, c: int = 1): - return a + b + c - - with pytest.raises(ValidationError): - test(2, 3, 4) - - -def test_annotated_function_with_list_overrides_and_return_override(): - @annotated([InstanceOf(int), InstanceOf(int), InstanceOf(float)], InstanceOf(float)) - def test(a: int, b: int, c: int = 1): - return a + b + c - - with pytest.raises(ValidationError): - test(2, 3, 4) - - assert test(2, 3, 4.0) == 9.0 - - -@pattern -def short_str(x, this): - if len(x) > 3: - return x - else: - return NoMatch - - -@pattern -def endswith_d(x, this): - if x.endswith("d"): - return x - else: - return NoMatch - - -def test_annotated_function_with_complex_type_annotations(): - @annotated - def test(a: Annotated[str, short_str, endswith_d], b: Union[int, float]): - return a, b - - assert test("abcd", 1) == ("abcd", 1) - assert test("---d", 1.0) == ("---d", 1.0) - - with pytest.raises(ValidationError): - test("---c", 1) - with pytest.raises(ValidationError): - test("123", 1) - with pytest.raises(ValidationError): - test("abcd", "qweqwe") - - -def test_annotated_function_without_annotations(): - @annotated - def test(a, b, c): - return a, b, c - - assert test(1, 2, 3) == (1, 2, 3) - assert test.__signature__.parameters.keys() == {"a", "b", "c"} - - -def test_annotated_function_without_decoration(snapshot): - def test(a, b, c): - return a + b + c - - func = annotated(test) - with pytest.raises(ValidationError) as excinfo: - func(1, 2) - snapshot.assert_match(str(excinfo.value), "error.txt") - - assert func(1, 2, c=3) == 6 - - -def test_annotated_function_with_varargs(): - @annotated - def test(a: float, b: float, *args: int): - return sum((a, b) + args) - - assert test(1.0, 2.0, 3, 4) == 10.0 - assert test(1.0, 2.0, 3, 4, 5) == 15.0 - - with pytest.raises(ValidationError): - test(1.0, 2.0, 3, 4, 5, 6.0) - - -def test_annotated_function_with_varkwargs(): - @annotated - def test(a: float, b: float, **kwargs: int): - return sum((a, b) + tuple(kwargs.values())) - - assert test(1.0, 2.0, c=3, d=4) == 10.0 - assert test(1.0, 2.0, c=3, d=4, e=5) == 15.0 - - with pytest.raises(ValidationError): - test(1.0, 2.0, c=3, d=4, e=5, f=6.0) - - -def test_multiple_validation_failures(): - @annotated - def test(a: float, b: float, *args: int, **kwargs: int): ... - - with pytest.raises(ValidationError) as excinfo: - test(1.0, 2.0, 3.0, 4, c=5.0, d=6) - - assert len(excinfo.value.errors) == 2 - - -def test_pickle(): - a = Parameter.from_argument("a", annotation=Argument(int)) - assert pickle.loads(pickle.dumps(a)) == a - - -def test_cloudpickle(): - cloudpickle = pytest.importorskip("cloudpickle") - a = Parameter.from_argument("a", annotation=Argument(int)) - assert cloudpickle.loads(cloudpickle.dumps(a)) == a diff --git a/ibis/common/tests/test_bases.py b/ibis/common/tests/test_bases.py deleted file mode 100644 index 68846f5f167a..000000000000 --- a/ibis/common/tests/test_bases.py +++ /dev/null @@ -1,387 +0,0 @@ -from __future__ import annotations - -import copy -import pickle -import weakref -from abc import ABCMeta, abstractmethod - -import pytest - -from ibis.common.bases import ( - Abstract, - AbstractMeta, - Comparable, - Final, - FrozenSlotted, - Immutable, - Singleton, - Slotted, -) - - -def test_classes_are_based_on_abstract(): - assert issubclass(Comparable, Abstract) - assert issubclass(Final, Abstract) - assert issubclass(Immutable, Abstract) - assert issubclass(Singleton, Abstract) - - -def test_abstract(): - class Foo(Abstract): - @abstractmethod - def foo(self): ... - - @property - @abstractmethod - def bar(self): ... - - assert not issubclass(type(Foo), ABCMeta) - assert issubclass(type(Foo), AbstractMeta) - assert Foo.__abstractmethods__ == frozenset({"foo", "bar"}) - - with pytest.raises(TypeError, match="Can't instantiate abstract class .*Foo.*"): - Foo() - - class Bar(Foo): - def foo(self): - return 1 - - @property - def bar(self): - return 2 - - bar = Bar() - assert bar.foo() == 1 - assert bar.bar == 2 - assert isinstance(bar, Foo) - assert isinstance(bar, Abstract) - assert Bar.__abstractmethods__ == frozenset() - - -def test_immutable(): - class Foo(Immutable): - __slots__ = ("a", "b") - - def __init__(self, a, b): - object.__setattr__(self, "a", a) - object.__setattr__(self, "b", b) - - foo = Foo(1, 2) - assert foo.a == 1 - assert foo.b == 2 - with pytest.raises(AttributeError): - foo.a = 2 - with pytest.raises(AttributeError): - foo.b = 3 - - assert copy.copy(foo) is foo - assert copy.deepcopy(foo) is foo - - -class Cache(dict): - def setpair(self, a, b, value): - a, b = id(a), id(b) - self.setdefault(a, {})[b] = value - self.setdefault(b, {})[a] = value - - def getpair(self, a, b): - return self.get(id(a), {}).get(id(b)) - - -class Node(Comparable): - # override the default cache object - __cache__ = Cache() - __slots__ = ("name",) - num_equal_calls = 0 - - def __init__(self, name): - self.name = name - - def __str__(self): - return self.name - - def __repr__(self): - return f"Node(name={self.name})" - - def __equals__(self, other): - Node.num_equal_calls += 1 - return self.name == other.name - - -@pytest.fixture -def cache(): - Node.num_equal_calls = 0 - cache = Node.__cache__ - yield cache - assert not cache - - -def test_comparable_basic(cache): - a = Node(name="a") - b = Node(name="a") - c = Node(name="a") - assert a == b - assert a == c - del a - del b - del c - - -def test_comparable_caching(cache): - a = Node(name="a") - b = Node(name="b") - c = Node(name="c") - d = Node(name="d") - e = Node(name="e") - - cache.setpair(a, b, True) - cache.setpair(a, c, False) - cache.setpair(c, d, True) - cache.setpair(b, d, False) - expected = { - id(a): {id(b): True, id(c): False}, - id(b): {id(a): True, id(d): False}, - id(c): {id(a): False, id(d): True}, - id(d): {id(c): True, id(b): False}, - } - assert cache == expected - - assert a == b - assert b == a - assert a != c - assert c != a - assert c == d - assert d == c - assert b != d - assert d != b - assert Node.num_equal_calls == 0 - assert cache == expected - - # no cache hit - assert cache.getpair(a, e) is None - assert a != e - assert cache.getpair(a, e) is False - assert Node.num_equal_calls == 1 - expected = { - id(a): {id(b): True, id(c): False, id(e): False}, - id(b): {id(a): True, id(d): False}, - id(c): {id(a): False, id(d): True}, - id(d): {id(c): True, id(b): False}, - id(e): {id(a): False}, - } - assert cache == expected - - # run only once - assert e != a - assert Node.num_equal_calls == 1 - assert cache.getpair(a, e) is False - assert cache == expected - - -def test_comparable_garbage_collection(cache): - a = Node(name="a") - b = Node(name="b") - c = Node(name="c") - d = Node(name="d") - - cache.setpair(a, b, True) - cache.setpair(a, c, False) - cache.setpair(c, d, True) - cache.setpair(b, d, False) - - assert cache.getpair(a, c) is False - assert cache.getpair(c, d) is True - del c - assert cache == { - id(a): {id(b): True}, - id(b): {id(a): True, id(d): False}, - id(d): {id(b): False}, - } - - assert cache.getpair(a, b) is True - assert cache.getpair(b, d) is False - del b - assert cache == {} - - assert a != d - assert cache == {id(a): {id(d): False}, id(d): {id(a): False}} - del a - assert cache == {} - - -def test_comparable_cache_reuse(cache): - nodes = [ - Node(name="a"), - Node(name="b"), - Node(name="c"), - Node(name="d"), - Node(name="e"), - ] - - expected = 0 - for a, b in zip(nodes, nodes): - a == a # noqa: B015 - a == b # noqa: B015 - b == a # noqa: B015 - if a != b: - expected += 1 - assert Node.num_equal_calls == expected - - assert len(cache) == expected - - # check that cache is evicted once nodes get collected - del nodes - assert len(cache) == 0 - - a = Node(name="a") - b = Node(name="a") - assert a == b - - -class OneAndOnly(Singleton): - __instances__ = weakref.WeakValueDictionary() - - -class DataType(Singleton): - __slots__ = ("nullable",) - __instances__ = weakref.WeakValueDictionary() - - def __init__(self, nullable=True): - self.nullable = nullable - - -def test_singleton_basics(): - one = OneAndOnly() - only = OneAndOnly() - assert one is only - - assert len(OneAndOnly.__instances__) == 1 - key = (OneAndOnly, (), ()) - assert OneAndOnly.__instances__[key] is one - - -def test_singleton_lifetime() -> None: - one = OneAndOnly() - assert len(OneAndOnly.__instances__) == 1 - - del one - assert len(OneAndOnly.__instances__) == 0 - - -def test_singleton_with_argument() -> None: - dt1 = DataType(nullable=True) - dt2 = DataType(nullable=False) - dt3 = DataType(nullable=True) - - assert dt1 is dt3 - assert dt1 is not dt2 - assert len(DataType.__instances__) == 2 - - del dt3 - assert len(DataType.__instances__) == 2 - del dt1 - assert len(DataType.__instances__) == 1 - del dt2 - assert len(DataType.__instances__) == 0 - - -def test_final(): - class A(Final): - pass - - with pytest.raises(TypeError, match="Cannot inherit from final class .*A.*"): - - class B(A): - pass - - -class MyObj(Slotted): - __slots__ = ("a", "b") - - -def test_slotted(): - obj = MyObj(a=1, b=2) - assert obj.a == 1 - assert obj.b == 2 - assert obj.__fields__ == ("a", "b") - assert obj.__slots__ == ("a", "b") - with pytest.raises(AttributeError): - obj.c = 3 - - obj2 = MyObj(a=1, b=2) - assert obj == obj2 - assert obj is not obj2 - - obj3 = MyObj(a=1, b=3) - assert obj != obj3 - - assert pickle.loads(pickle.dumps(obj)) == obj - - with pytest.raises(KeyError): - MyObj(a=1) - - -class MyObj2(MyObj): - __slots__ = ("c",) - - -def test_slotted_inheritance(): - obj = MyObj2(a=1, b=2, c=3) - assert obj.a == 1 - assert obj.b == 2 - assert obj.c == 3 - assert obj.__fields__ == ("a", "b", "c") - assert obj.__slots__ == ("c",) - with pytest.raises(AttributeError): - obj.d = 4 - - obj2 = MyObj2(a=1, b=2, c=3) - assert obj == obj2 - assert obj is not obj2 - - obj3 = MyObj2(a=1, b=2, c=4) - assert obj != obj3 - assert pickle.loads(pickle.dumps(obj)) == obj - - with pytest.raises(KeyError): - MyObj2(a=1, b=2) - - -class MyFrozenObj(FrozenSlotted): - __slots__ = ("a", "b") - - -class MyFrozenObj2(MyFrozenObj): - __slots__ = ("c", "d") - - -def test_frozen_slotted(): - obj = MyFrozenObj(a=1, b=2) - - assert obj.a == 1 - assert obj.b == 2 - assert obj.__fields__ == ("a", "b") - assert obj.__slots__ == ("a", "b") - with pytest.raises(AttributeError): - obj.b = 3 - with pytest.raises(AttributeError): - obj.c = 3 - - obj2 = MyFrozenObj(a=1, b=2) - assert obj == obj2 - assert obj is not obj2 - assert hash(obj) == hash(obj2) - - restored = pickle.loads(pickle.dumps(obj)) - assert restored == obj - assert hash(restored) == hash(obj) - - with pytest.raises(KeyError): - MyFrozenObj(a=1) - - -def test_frozen_slotted_inheritance(): - obj3 = MyFrozenObj2(a=1, b=2, c=3, d=4) - assert obj3.__slots__ == ("c", "d") - assert obj3.__fields__ == ("a", "b", "c", "d") - assert pickle.loads(pickle.dumps(obj3)) == obj3 diff --git a/ibis/common/tests/test_collections.py b/ibis/common/tests/test_collections.py index 7a2187deab0a..9ed38d76d21a 100644 --- a/ibis/common/tests/test_collections.py +++ b/ibis/common/tests/test_collections.py @@ -7,6 +7,7 @@ from ibis.common.collections import ( Collection, Container, + DisjointSet, FrozenDict, FrozenOrderedDict, Iterable, @@ -14,7 +15,6 @@ Mapping, MapSet, Reversible, - RewindableIterator, Sequence, Sized, ) @@ -465,32 +465,78 @@ def test_frozenordereddict(): assert_pickle_roundtrip(d) -def test_rewindable_iterator(): - it = RewindableIterator(range(10)) - assert next(it) == 0 - assert next(it) == 1 - with pytest.raises(ValueError, match="No checkpoint to rewind to"): - it.rewind() - - it.checkpoint() - assert next(it) == 2 - assert next(it) == 3 - it.rewind() - assert next(it) == 2 - assert next(it) == 3 - assert next(it) == 4 - it.checkpoint() - assert next(it) == 5 - assert next(it) == 6 - it.rewind() - assert next(it) == 5 - assert next(it) == 6 - assert next(it) == 7 - it.rewind() - assert next(it) == 5 - assert next(it) == 6 - assert next(it) == 7 - assert next(it) == 8 - assert next(it) == 9 - with pytest.raises(StopIteration): - next(it) +def test_disjoint_set(): + ds = DisjointSet() + ds.add(1) + ds.add(2) + ds.add(3) + ds.add(4) + + ds1 = DisjointSet([1, 2, 3, 4]) + assert ds == ds1 + assert ds[1] == {1} + assert ds[2] == {2} + assert ds[3] == {3} + assert ds[4] == {4} + + assert ds.union(1, 2) is True + assert ds[1] == {1, 2} + assert ds[2] == {1, 2} + assert ds.union(2, 3) is True + assert ds[1] == {1, 2, 3} + assert ds[2] == {1, 2, 3} + assert ds[3] == {1, 2, 3} + assert ds.union(1, 3) is False + assert ds[4] == {4} + assert ds != ds1 + assert 1 in ds + assert 2 in ds + assert 5 not in ds + + assert ds.find(1) == 1 + assert ds.find(2) == 1 + assert ds.find(3) == 1 + assert ds.find(4) == 4 + + assert ds.connected(1, 2) is True + assert ds.connected(1, 3) is True + assert ds.connected(1, 4) is False + + # test mapping api get + assert ds.get(1) == {1, 2, 3} + assert ds.get(4) == {4} + assert ds.get(5) is None + assert ds.get(5, 5) == 5 + assert ds.get(5, default=5) == 5 + + # test mapping api keys + assert set(ds.keys()) == {1, 2, 3, 4} + assert set(ds) == {1, 2, 3, 4} + + # test mapping api values + assert tuple(ds.values()) == ({1, 2, 3}, {1, 2, 3}, {1, 2, 3}, {4}) + + # test mapping api items + assert tuple(ds.items()) == ( + (1, {1, 2, 3}), + (2, {1, 2, 3}), + (3, {1, 2, 3}), + (4, {4}), + ) + + # check that the disjoint set doesn't get corrupted by adding an existing element + ds.verify() + ds.add(1) + ds.verify() + + with pytest.raises(RuntimeError, match="DisjointSet is corrupted"): + ds._parents[1] = 1 + ds._classes[1] = {1} + ds.verify() + + # test copying the disjoint set + ds2 = ds.copy() + assert ds == ds2 + assert ds is not ds2 + ds2.add(5) + assert ds != ds2 diff --git a/ibis/common/tests/test_deferred.py b/ibis/common/tests/test_deferred.py deleted file mode 100644 index 56bc1efb4a45..000000000000 --- a/ibis/common/tests/test_deferred.py +++ /dev/null @@ -1,614 +0,0 @@ -from __future__ import annotations - -import operator -import pickle - -import pytest -from pytest import param - -import ibis -from ibis.common.bases import Slotted -from ibis.common.collections import FrozenDict -from ibis.common.deferred import ( - Attr, - Call, - Deferred, - Factory, - Item, - Just, - JustUnhashable, - Mapping, - Sequence, - Variable, - _, - const, - deferrable, - deferred, - resolver, - var, -) -from ibis.util import Namespace - - -def test_builder_just(): - p = Just(1) - assert p.resolve({}) == 1 - assert p.resolve({"a": 1}) == 1 - - # unwrap subsequently nested Just instances - assert Just(p) == p - - # disallow creating a Just builder from other builders or deferreds - with pytest.raises(TypeError, match="cannot be used as a Just value"): - Just(_) - with pytest.raises(TypeError, match="cannot be used as a Just value"): - Just(Factory(lambda _: _)) - - -@pytest.mark.parametrize( - "value", - [ - [1, 2, 3], - {"a": 1, "b": 2}, - {1, 2, 3}, - ], -) -def test_builder_just_unhashable(value): - p = Just(value) - assert isinstance(p, JustUnhashable) - assert p.resolve({}) == value - - -def test_builder_variable(): - p = Variable("other") - context = {"other": 10} - assert p.resolve(context) == 10 - - -def test_builder_factory(): - f = Factory(lambda _: _ + 1) - assert f.resolve({"_": 1}) == 2 - assert f.resolve({"_": 2}) == 3 - - def fn(**kwargs): - assert kwargs == {"_": 10, "a": 5} - return -1 - - f = Factory(fn) - assert f.resolve({"_": 10, "a": 5}) == -1 - - -def test_builder_call(): - def fn(a, b, c=1): - return a + b + c - - c = Call(fn, 1, 2, c=3) - assert c.resolve({}) == 6 - - c = Call(fn, Just(-1), Just(-2)) - assert c.resolve({}) == -2 - - c = Call(dict, a=1, b=2) - assert c.resolve({}) == {"a": 1, "b": 2} - - c = Call(float, "1.1") - assert c.resolve({}) == 1.1 - - -def test_builder_attr(): - class MyType: - def __init__(self, a, b): - self.a = a - self.b = b - - def __hash__(self): - return hash((type(self), self.a, self.b)) - - v = Variable("v") - b = Attr(v, "b") - assert b.resolve({"v": MyType(1, 2)}) == 2 - - b = Attr(MyType(1, 2), "a") - assert b.resolve({}) == 1 - - name = Variable("name") - # test that name can be a deferred as well - b = Attr(v, name) - assert b.resolve({"v": MyType(1, 2), "name": "a"}) == 1 - - -def test_builder_item(): - v = Variable("v") - b = Item(v, 1) - assert b.resolve({"v": [1, 2, 3]}) == 2 - - b = Item(FrozenDict(a=1, b=2), "a") - assert b.resolve({}) == 1 - - name = Variable("name") - # test that name can be a deferred as well - b = Item(v, name) - assert b.resolve({"v": {"a": 1, "b": 2}, "name": "b"}) == 2 - - -def test_builder_mapping(): - b = Mapping({"a": 1, "b": 2}) - assert b.resolve({}) == {"a": 1, "b": 2} - - b = Mapping({"a": Just(1), "b": Just(2)}) - assert b.resolve({}) == {"a": 1, "b": 2} - - b = Mapping({"a": Just(1), "b": Just(2), "c": _}) - assert b.resolve({"_": 3}) == {"a": 1, "b": 2, "c": 3} - - -def test_builder(): - class MyClass: - pass - - def fn(x): - return x + 1 - - assert resolver(1) == Just(1) - assert resolver(Just(1)) == Just(1) - assert resolver(Just(Just(1))) == Just(1) - assert resolver(MyClass) == Just(MyClass) - assert resolver(fn) == Just(fn) - assert resolver(()) == Sequence(()) - assert resolver((1, 2, _)) == Sequence((Just(1), Just(2), _)) - assert resolver({}) == Mapping({}) - assert resolver({"a": 1, "b": _}) == Mapping({"a": Just(1), "b": _}) - - assert resolver(var("x")) == Variable("x") - assert resolver(Variable("x")) == Variable("x") - - -def test_builder_objects_are_hashable(): - a = Variable("a") - b = Attr(a, "b") - c = Item(a, 1) - d = Call(operator.add, a, 1) - - set_ = {a, b, c, d} - assert len(set_) == 4 - - for obj in [a, b, c, d]: - assert obj == obj - assert hash(obj) == hash(obj) - set_.add(obj) - assert len(set_) == 4 - - -@pytest.mark.parametrize( - ("value", "expected"), - [ - ((), ()), - ([], []), - ({}, {}), - ((1, 2, 3), (1, 2, 3)), - ([1, 2, 3], [1, 2, 3]), - ({"a": 1, "b": 2}, {"a": 1, "b": 2}), - (FrozenDict({"a": 1, "b": 2}), FrozenDict({"a": 1, "b": 2})), - ], -) -def test_deferred_builds(value, expected): - assert resolver(value).resolve({}) == expected - - -def test_deferred_supports_string_arguments(): - # deferred() is applied on all arguments of Call() except the first one and - # sequences are transparently handled, the check far sequences was incorrect - # for strings causing infinite recursion - b = resolver("3.14") - assert b.resolve({}) == "3.14" - - -def test_deferred_object_are_not_hashable(): - # since __eq__ is overloaded, Deferred objects are not hashable - with pytest.raises(TypeError, match="unhashable type"): - hash(_.a) - - -def test_deferred_const(): - obj = const({"a": 1, "b": 2, "c": "gamma"}) - - deferred = obj["c"].upper() - assert deferred._resolver == Call(Attr(Item(obj, "c"), "upper")) - assert deferred.resolve() == "GAMMA" - - -def test_deferred_variable_getattr(): - v = var("v") - p = v.copy - assert resolver(p) == Attr(v, "copy") - assert resolver(p).resolve({"v": [1, 2, 3]})() == [1, 2, 3] - - p = v.copy() - assert resolver(p) == Call(Attr(v, "copy")) - assert resolver(p).resolve({"v": [1, 2, 3]}) == [1, 2, 3] - - -class TableMock(dict): - def __getattr__(self, attr): - return self[attr] - - def __eq__(self, other): - return isinstance(other, TableMock) and super().__eq__(other) - - -def _binop(name, switch=False): - def method(self, other): - if switch: - return BinaryMock(name=name, left=other, right=self) - else: - return BinaryMock(name=name, left=self, right=other) - - return method - - -class ValueMock(Slotted): - def log(self, base=None): - return UnaryMock(name="log", arg=base) - - def sum(self): - return UnaryMock(name="sum", arg=self) - - def __neg__(self): - return UnaryMock(name="neg", arg=self) - - def __invert__(self): - return UnaryMock(name="invert", arg=self) - - __lt__ = _binop("lt") - __gt__ = _binop("gt") - __le__ = _binop("le") - __ge__ = _binop("ge") - __add__ = _binop("add") - __radd__ = _binop("add", switch=True) - __sub__ = _binop("sub") - __rsub__ = _binop("sub", switch=True) - __mul__ = _binop("mul") - __rmul__ = _binop("mul", switch=True) - __mod__ = _binop("mod") - __rmod__ = _binop("mod", switch=True) - __truediv__ = _binop("div") - __rtruediv__ = _binop("div", switch=True) - __floordiv__ = _binop("floordiv") - __rfloordiv__ = _binop("floordiv", switch=True) - __rshift__ = _binop("shift") - __rrshift__ = _binop("shift", switch=True) - __lshift__ = _binop("shift") - __rlshift__ = _binop("shift", switch=True) - __pow__ = _binop("pow") - __rpow__ = _binop("pow", switch=True) - __xor__ = _binop("xor") - __rxor__ = _binop("xor", switch=True) - __and__ = _binop("and") - __rand__ = _binop("and", switch=True) - __or__ = _binop("or") - __ror__ = _binop("or", switch=True) - - -class ColumnMock(ValueMock): - __slots__ = ("name", "dtype") - - def __init__(self, name, dtype): - super().__init__(name=name, dtype=dtype) - - def __deferred_repr__(self): - return f"" - - def type(self): - return self.dtype - - -class UnaryMock(ValueMock): - __slots__ = ("name", "arg") - - def __init__(self, name, arg): - super().__init__(name=name, arg=arg) - - -class BinaryMock(ValueMock): - __slots__ = ("name", "left", "right") - - def __init__(self, name, left, right): - super().__init__(name=name, left=left, right=right) - - -@pytest.fixture -def table(): - return TableMock( - a=ColumnMock(name="a", dtype="int"), - b=ColumnMock(name="b", dtype="int"), - c=ColumnMock(name="c", dtype="string"), - ) - - -@pytest.mark.parametrize( - "func", - [ - param(lambda _: _, id="root"), - param(lambda _: _.a, id="getattr"), - param(lambda _: _["a"], id="getitem"), - param(lambda _: _.a.log(), id="method"), - param(lambda _: _.a.log(_.b), id="method-with-args"), - param(lambda _: _.a.log(base=_.b), id="method-with-kwargs"), - param(lambda _: _.a + _.b, id="binary-op"), - param(lambda _: ~_.a, id="unary-op"), - ], -) -def test_deferred_is_pickleable(func, table): - expr1 = func(_) - builder1 = resolver(expr1) - builder2 = pickle.loads(pickle.dumps(builder1)) - - r1 = builder1.resolve({"_": table}) - r2 = builder2.resolve({"_": table}) - - assert r1 == r2 - - -def test_deferred_getitem(table): - expr = _["a"] - assert expr.resolve(table) == table["a"] - assert repr(expr) == "_['a']" - - -def test_deferred_getattr(table): - expr = _.a - assert expr.resolve(table) == table.a - assert repr(expr) == "_.a" - - -def test_deferred_call(table): - expr = Deferred(Call(operator.add, _.a, 2)) - res = expr.resolve(table) - assert res == table.a + 2 - assert repr(expr) == "add(_.a, 2)" - - func = lambda a, b: a + b - expr = Deferred(Call(func, a=_.a, b=2)) - res = expr.resolve(table) - assert res == table.a + 2 - assert func.__name__ in repr(expr) - assert "a=_.a, b=2" in repr(expr) - - expr = Deferred(Call(operator.add, (_.a, 2)), repr="") - assert repr(expr) == "" - - -def test_deferred_method(table): - expr = _.a.log() - res = expr.resolve(table) - assert res == table.a.log() - assert repr(expr) == "_.a.log()" - - -def test_deferred_method_with_args(table): - expr = _.a.log(1) - res = expr.resolve(table) - assert res == table.a.log(1) - assert repr(expr) == "_.a.log(1)" - - expr = _.a.log(_.b) - res = expr.resolve(table) - assert res == table.a.log(table.b) - assert repr(expr) == "_.a.log(_.b)" - - -def test_deferred_method_with_kwargs(table): - expr = _.a.log(base=1) - res = expr.resolve(table) - assert res == table.a.log(base=1) - assert repr(expr) == "_.a.log(base=1)" - - expr = _.a.log(base=_.b) - res = expr.resolve(table) - assert res == table.a.log(base=table.b) - assert repr(expr) == "_.a.log(base=_.b)" - - -def test_deferred_apply(table): - expr = Deferred(Call(operator.add, _.a, 2)) - res = expr.resolve(table) - assert res == table.a + 2 - assert repr(expr) == "add(_.a, 2)" - - func = lambda a, b: a + b - expr = Deferred(Call(func, _.a, 2)) - res = expr.resolve(table) - assert res == table.a + 2 - assert func.__name__ in repr(expr) - - -@pytest.mark.parametrize( - "symbol, op", - [ - ("+", operator.add), - ("-", operator.sub), - ("*", operator.mul), - ("/", operator.truediv), - ("//", operator.floordiv), - ("**", operator.pow), - ("%", operator.mod), - ("&", operator.and_), - ("|", operator.or_), - ("^", operator.xor), - (">>", operator.rshift), - ("<<", operator.lshift), - ], -) -def test_deferred_binary_operations(symbol, op, table): - expr = op(_.a, _.b) - sol = op(table.a, table.b) - res = expr.resolve(table) - assert res == sol - assert repr(expr) == f"(_.a {symbol} _.b)" - - expr = op(1, _.a) - sol = op(1, table.a) - res = expr.resolve(table) - assert res == sol - assert repr(expr) == f"(1 {symbol} _.a)" - - -@pytest.mark.parametrize( - "sym, rsym, op", - [ - ("==", "==", operator.eq), - ("!=", "!=", operator.ne), - ("<", ">", operator.lt), - ("<=", ">=", operator.le), - (">", "<", operator.gt), - (">=", "<=", operator.ge), - ], -) -def test_deferred_compare_operations(sym, rsym, op, table): - expr = op(_.a, _.b) - sol = op(table.a, table.b) - res = expr.resolve(table) - assert res == sol - assert repr(expr) == f"(_.a {sym} _.b)" - - expr = op(1, _.a) - sol = op(1, table.a) - res = expr.resolve(table) - assert res == sol - assert repr(expr) == f"(_.a {rsym} 1)" - - -@pytest.mark.parametrize( - "symbol, op", - [ - ("-", operator.neg), - ("~", operator.invert), - ], -) -def test_deferred_unary_operations(symbol, op, table): - expr = op(_.a) - sol = op(table.a) - res = expr.resolve(table) - assert res == sol - assert repr(expr) == f"{symbol}_.a" - - -@pytest.mark.parametrize("obj", [_, _.a, _.a.b[0]]) -def test_deferred_is_not_iterable(obj): - with pytest.raises(TypeError, match="object is not iterable"): - sorted(obj) - - with pytest.raises(TypeError, match="object is not iterable"): - iter(obj) - - with pytest.raises(TypeError, match="is not an iterator"): - next(obj) - - -@pytest.mark.parametrize("obj", [_, _.a, _.a.b[0]]) -def test_deferred_is_not_truthy(obj): - with pytest.raises( - TypeError, match="The truth value of Deferred objects is not defined" - ): - bool(obj) - - -def test_deferrable(table): - @deferrable - def f(a, b, c=3): - return a + b + c - - assert f(table.a, table.b) == table.a + table.b + 3 - assert f(table.a, table.b, c=4) == table.a + table.b + 4 - - expr = f(_.a, _.b) - sol = table.a + table.b + 3 - res = expr.resolve(table) - assert res == sol - assert repr(expr) == "f(_.a, _.b)" - - expr = f(1, 2, c=_.a) - sol = 3 + table.a - res = expr.resolve(table) - assert res == sol - assert repr(expr) == "f(1, 2, c=_.a)" - - with pytest.raises(TypeError, match="unknown"): - f(_.a, _.b, unknown=3) # invalid calls caught at call time - - -def test_deferrable_repr(): - @deferrable(repr="") - def myfunc(x): - return x + 1 - - assert repr(myfunc(_.a)) == "" - - -def test_deferred_set_raises(): - with pytest.raises(TypeError, match="unhashable type"): - {_.a, _.b} # noqa: B018 - - -@pytest.mark.parametrize( - "case", - [ - param(lambda: ([1, _], [1, 2]), id="list"), - param(lambda: ((1, _), (1, 2)), id="tuple"), - param(lambda: ({"x": 1, "y": _}, {"x": 1, "y": 2}), id="dict"), - param(lambda: ({"x": 1, "y": [_, 3]}, {"x": 1, "y": [2, 3]}), id="nested"), - ], -) -def test_deferrable_nested_args(case): - arg, sol = case() - - @deferrable - def identity(x): - return x - - expr = identity(arg) - assert expr.resolve(2) == sol - assert identity(sol) is sol - assert repr(expr) == f"identity({arg!r})" - - -def test_deferred_is_final(): - with pytest.raises(TypeError, match="Cannot inherit from final class"): - - class MyDeferred(Deferred): - pass - - -def test_deferred_is_immutable(): - with pytest.raises(AttributeError, match="cannot be assigned to immutable"): - _.a = 1 - - -def test_deferred_namespace(table): - ns = Namespace(deferred, module=__name__) - - assert isinstance(ns.ColumnMock, Deferred) - assert resolver(ns.ColumnMock) == Just(ColumnMock) - - d = ns.ColumnMock("a", "int") - assert resolver(d) == Call(Just(ColumnMock), Just("a"), Just("int")) - assert d.resolve() == ColumnMock("a", "int") - - d = ns.ColumnMock("a", _) - assert resolver(d) == Call(Just(ColumnMock), Just("a"), _) - assert d.resolve("int") == ColumnMock("a", "int") - - a, b = var("a"), var("b") - d = ns.ColumnMock(a, b).name - assert d.resolve(a="colname", b="float") == "colname" - - -def test_custom_deferred_repr(table): - expr = _.x + table.a - assert repr(expr) == "(_.x + )" - - -def test_null_deferrable(table): - result = ibis.null(_.a.type()).resolve(table).op() - expected = ibis.null(table.a.type()).op() - assert result == expected diff --git a/ibis/common/tests/test_egraph.py b/ibis/common/tests/test_egraph.py deleted file mode 100644 index 98fcd04bf1ce..000000000000 --- a/ibis/common/tests/test_egraph.py +++ /dev/null @@ -1,540 +0,0 @@ -from __future__ import annotations - -import itertools -from typing import Any - -import pytest - -import ibis -import ibis.expr.datatypes as dt -import ibis.expr.operations as ops -from ibis.common.egraph import DisjointSet, EGraph, ENode, Pattern, Rewrite, Variable -from ibis.common.graph import Graph, Node -from ibis.common.grounds import Concrete -from ibis.util import promote_tuple - - -def test_disjoint_set(): - ds = DisjointSet() - ds.add(1) - ds.add(2) - ds.add(3) - ds.add(4) - - ds1 = DisjointSet([1, 2, 3, 4]) - assert ds == ds1 - assert ds[1] == {1} - assert ds[2] == {2} - assert ds[3] == {3} - assert ds[4] == {4} - - assert ds.union(1, 2) is True - assert ds[1] == {1, 2} - assert ds[2] == {1, 2} - assert ds.union(2, 3) is True - assert ds[1] == {1, 2, 3} - assert ds[2] == {1, 2, 3} - assert ds[3] == {1, 2, 3} - assert ds.union(1, 3) is False - assert ds[4] == {4} - assert ds != ds1 - assert 1 in ds - assert 2 in ds - assert 5 not in ds - - assert ds.find(1) == 1 - assert ds.find(2) == 1 - assert ds.find(3) == 1 - assert ds.find(4) == 4 - - assert ds.connected(1, 2) is True - assert ds.connected(1, 3) is True - assert ds.connected(1, 4) is False - - # test mapping api get - assert ds.get(1) == {1, 2, 3} - assert ds.get(4) == {4} - assert ds.get(5) is None - assert ds.get(5, 5) == 5 - assert ds.get(5, default=5) == 5 - - # test mapping api keys - assert set(ds.keys()) == {1, 2, 3, 4} - assert set(ds) == {1, 2, 3, 4} - - # test mapping api values - assert tuple(ds.values()) == ({1, 2, 3}, {1, 2, 3}, {1, 2, 3}, {4}) - - # test mapping api items - assert tuple(ds.items()) == ( - (1, {1, 2, 3}), - (2, {1, 2, 3}), - (3, {1, 2, 3}), - (4, {4}), - ) - - # check that the disjoint set doesn't get corrupted by adding an existing element - ds.verify() - ds.add(1) - ds.verify() - - with pytest.raises(RuntimeError, match="DisjointSet is corrupted"): - ds._parents[1] = 1 - ds._classes[1] = {1} - ds.verify() - - # test copying the disjoint set - ds2 = ds.copy() - assert ds == ds2 - assert ds is not ds2 - ds2.add(5) - assert ds != ds2 - - -class PatternNamespace: - def __init__(self, module): - self.module = module - - def __getattr__(self, name): - klass = getattr(self.module, name) - - def pattern(*args): - return Pattern(klass, args) - - return pattern - - -p = PatternNamespace(ops) - -one = ibis.literal(1) -two = one * 2 -two_ = one + one -two__ = ibis.literal(2) -three = one + two -six = three * two_ -seven = six + 1 -seven_ = seven * 1 -eleven = seven_ + 4 - -a, b, c = Variable("a"), Variable("b"), Variable("c") -x, y, z = Variable("x"), Variable("y"), Variable("z") - - -class Base(Concrete, Node): - def __class_getitem__(self, args): - args = promote_tuple(args) - return Pattern(self, args) - - -class Lit(Base): - value: Any - - -class Add(Base): - x: Any - y: Any - - -class Mul(Base): - x: Any - y: Any - - -def test_enode(): - node = ENode(1, (2, 3)) - assert node == ENode(1, (2, 3)) - assert node != ENode(1, [2, 4]) - assert node != ENode(1, [2, 3, 4]) - assert node != ENode(1, [2]) - assert hash(node) == hash(ENode(1, (2, 3))) - assert hash(node) != hash(ENode(1, (2, 4))) - - with pytest.raises(AttributeError, match="immutable"): - node.head = 2 - with pytest.raises(AttributeError, match="immutable"): - node.args = (2, 3) - - -class MyNode(Concrete, Node): - a: int - b: int - c: str - - -def test_enode_roundtrip(): - # create e-node from node - node = MyNode(a=1, b=2, c="3") - enode = ENode.from_node(node) - assert enode == ENode(MyNode, (1, 2, "3")) - - # reconstruct node from e-node - node_ = enode.to_node() - assert node_ == node - - -class MySecondNode(Concrete, Node): - a: int - b: tuple[int, ...] - - -def test_enode_roundtrip_with_variadic_arg(): - # create e-node from node - node = MySecondNode(a=1, b=(2, 3)) - enode = ENode.from_node(node) - assert enode == ENode(MySecondNode, (1, (2, 3))) - - # reconstruct node from e-node - node_ = enode.to_node() - assert node_ == node - - -class MyInt(Concrete, Node): - value: int - - -class MyThirdNode(Concrete, Node): - a: int - b: tuple[MyInt, ...] - - -def test_enode_roundtrip_with_nested_arg(): - # create e-node from node - node = MyThirdNode(a=1, b=(MyInt(value=2), MyInt(value=3))) - enode = ENode.from_node(node) - assert enode == ENode(MyThirdNode, (1, (ENode(MyInt, (2,)), ENode(MyInt, (3,))))) - - # reconstruct node from e-node - node_ = enode.to_node() - assert node_ == node - - -class MyFourthNode(Concrete, Node): - pass - - -class MyLit(MyFourthNode): - value: int - - -class MyAdd(MyFourthNode): - a: MyFourthNode - b: MyFourthNode - - -class MyMul(MyFourthNode): - a: MyFourthNode - b: MyFourthNode - - -def test_disjoint_set_with_enode(): - # number postfix highlights the depth of the node - one = MyLit(value=1) - two = MyLit(value=2) - two1 = MyAdd(a=one, b=one) - three1 = MyAdd(a=one, b=two) - six2 = MyMul(a=three1, b=two1) - seven2 = MyAdd(a=six2, b=one) - - # expected enodes postfixed with an underscore - one_ = ENode(MyLit, (1,)) - two_ = ENode(MyLit, (2,)) - three_ = ENode(MyLit, (3,)) - two1_ = ENode(MyAdd, (one_, one_)) - three1_ = ENode(MyAdd, (one_, two_)) - six2_ = ENode(MyMul, (three1_, two1_)) - seven2_ = ENode(MyAdd, (six2_, one_)) - - enode = ENode.from_node(seven2) - assert enode == seven2_ - - assert enode.to_node() == seven2 - - ds = DisjointSet() - for enode in Graph.from_bfs(seven2_): - ds.add(enode) - assert ds.find(enode) == enode - - # merging identical nodes should return False - assert ds.union(three1_, three1_) is False - assert ds.find(three1_) == three1_ - assert ds[three1_] == {three1_} - - # now merge a (1 + 2) and (3) nodes, but first add `three_` to the set - ds.add(three_) - assert ds.union(three1_, three_) is True - assert ds.find(three1_) == three1_ - assert ds.find(three_) == three1_ - assert ds[three_] == {three_, three1_} - - -def test_pattern(): - Pattern._counter = itertools.count() - - p = Pattern(ops.Literal, (1, dt.int8)) - assert p.head == ops.Literal - assert p.args == (1, dt.int8) - assert p.name is None - - p = "name" @ Pattern(ops.Literal, (1, dt.int8)) - assert p.head == ops.Literal - assert p.args == (1, dt.int8) - assert p.name == "name" - - -def test_pattern_flatten(): - # using auto-generated names - one = Pattern(ops.Literal, (1, dt.int8)) - two = Pattern(ops.Literal, (2, dt.int8)) - three = Pattern(ops.Add, (one, two)) - - result = dict(three.flatten()) - expected = { - Variable(0): Pattern(ops.Add, (Variable(1), Variable(2))), - Variable(2): Pattern(ops.Literal, (2, dt.int8)), - Variable(1): Pattern(ops.Literal, (1, dt.int8)), - } - assert result == expected - - # using user-provided names which helps capturing variables - one = "one" @ Pattern(ops.Literal, (1, dt.int8)) - two = "two" @ Pattern(ops.Literal, (2, dt.int8)) - three = "three" @ Pattern(ops.Add, (one, two)) - - result = tuple(three.flatten()) - expected = ( - (Variable("one"), Pattern(ops.Literal, (1, dt.int8))), - (Variable("two"), Pattern(ops.Literal, (2, dt.int8))), - (Variable("three"), Pattern(ops.Add, (Variable("one"), Variable("two")))), - ) - assert result == expected - - -def test_egraph_match_simple(): - eg = EGraph() - eg.add(eleven.op()) - - pat = p.Multiply(a, "lit" @ p.Literal(1, dt.int8)) - res = eg.match(pat) - - enode = ENode.from_node(seven_.op()) - matches = res[enode] - assert matches["a"] == ENode.from_node(seven.op()) - assert matches["lit"] == ENode.from_node(one.op()) - - -def test_egraph_match_wrong_argnum(): - two = one + one - four = two + two - - eg = EGraph() - eg.add(four.op()) - - # here we have an extra `2` among the literal's arguments - pat = p.Add(a, p.Add(p.Literal(1, dt.int8, 2), b)) - res = eg.match(pat) - - assert res == {} - - pat = p.Add(a, p.Add(p.Literal(1, dt.int8), b)) - res = eg.match(pat) - - expected = { - ENode.from_node(four.op()): { - 0: ENode.from_node(four.op()), - 1: ENode.from_node(two.op()), - 2: ENode.from_node(one.op()), - "a": ENode.from_node(two.op()), - "b": ENode.from_node(one.op()), - } - } - assert res == expected - - -def test_egraph_match_nested(): - node = eleven.op() - enode = ENode.from_node(node) - - eg = EGraph() - eg.add(enode) - - result = eg.match(p.Multiply(a, p.Literal(1, b))) - matched = ENode.from_node(seven_.op()) - - expected = { - matched: { - 0: matched, - 1: ENode.from_node(one.op()), - "a": ENode.from_node(seven.op()), - "b": dt.int8, - } - } - assert result == expected - - -def test_egraph_apply_nested(): - node = eleven.op() - enode = ENode.from_node(node) - - eg = EGraph() - eg.add(enode) - - r3 = p.Multiply(a, p.Literal(1, dt.int8)) >> a - eg.apply(r3) - - result = eg.extract(seven_.op()) - expected = seven.op() - assert result == expected - - -def test_egraph_extract_simple(): - eg = EGraph() - eg.add(eleven.op()) - - res = eg.extract(one.op()) - assert res == one.op() - - -def test_egraph_extract_minimum_cost(): - eg = EGraph() - eg.add(two.op()) # 1 * 2 - eg.add(two_.op()) # 1 + 1 - eg.add(two__.op()) # 2 - assert eg.extract(two.op()) == two.op() - - eg.union(two.op(), two_.op()) - assert eg.extract(two.op()) in {two.op(), two_.op()} - - eg.union(two.op(), two__.op()) - assert eg.extract(two.op()) == two__.op() - - eg.union(two.op(), two__.op()) - assert eg.extract(two.op()) == two__.op() - - -def test_egraph_rewrite_to_variable(): - eg = EGraph() - eg.add(eleven.op()) - - # rule with a variable on the right-hand side - rule = Rewrite(p.Multiply(a, "lit" @ p.Literal(1, dt.int8)), a) - eg.apply(rule) - assert eg.equivalent(seven_.op(), seven.op()) - - -def test_egraph_rewrite_to_constant_raises(): - node = (one * 0).op() - - eg = EGraph() - eg.add(node) - - # rule with a constant on the right-hand side - with pytest.raises(TypeError): - Rewrite(p.Multiply(a, "lit" @ p.Literal(0, dt.int8)), 0) - - -def test_egraph_rewrite_to_pattern(): - eg = EGraph() - eg.add(three.op()) - - # rule with a pattern on the right-hand side - rule = Rewrite(p.Multiply(a, "lit" @ p.Literal(2, dt.int8)), p.Add(a, a)) - eg.apply(rule) - assert eg.equivalent(two.op(), two_.op()) - - -def test_egraph_rewrite_dynamic(): - def applier(egraph, match, a, mul, times): - return ENode(ops.Add, (a, a)) - - node = (one * 2).op() - - eg = EGraph() - eg.add(node) - - # rule with a dynamic pattern on the right-hand side - rule = Rewrite( - "mul" @ p.Multiply(a, p.Literal(Variable("times"), dt.int8)), applier - ) - eg.apply(rule) - - assert eg.extract(node) in {two.op(), two_.op()} - - -def test_egraph_rewrite_commutative(): - rules = [ - Mul[a, b] >> Mul[b, a], - Mul[a, Lit[1]] >> a, - ] - node = Mul(Lit(2), Mul(Lit(1), Lit(3))) - expected = {Mul(Lit(2), Lit(3)), Mul(Lit(3), Lit(2))} - - egraph = EGraph() - egraph.add(node) - egraph.run(rules, 200) - best = egraph.extract(node) - - assert best in expected - - -@pytest.mark.parametrize( - ("node", "expected"), - [(Mul(Lit(0), Lit(42)), Lit(0)), (Add(Lit(0), Mul(Lit(1), Lit(2))), Lit(2))], -) -def test_egraph_rewrite(node, expected): - rules = [ - Add[a, b] >> Add[b, a], - Mul[a, b] >> Mul[b, a], - Add[a, Lit[0]] >> a, - Mul[a, Lit[0]] >> Lit[0], - Mul[a, Lit[1]] >> a, - ] - egraph = EGraph() - egraph.add(node) - egraph.run(rules, 100) - best = egraph.extract(node) - - assert best == expected - - -def is_equal(a, b, rules, iters=7): - egraph = EGraph() - id_a = egraph.add(a) - id_b = egraph.add(b) - egraph.run(rules, iters) - return egraph.equivalent(id_a, id_b) - - -def test_math_associate_adds(benchmark): - math_rules = [Add[a, b] >> Add[b, a], Add[a, Add[b, c]] >> Add[Add[a, b], c]] - - expr_a = Add(1, Add(2, Add(3, Add(4, Add(5, Add(6, 7)))))) - expr_b = Add(7, Add(6, Add(5, Add(4, Add(3, Add(2, 1)))))) - assert is_equal(expr_a, expr_b, math_rules, iters=500) - - expr_a = Add(6, Add(Add(1, 5), Add(0, Add(4, Add(2, 3))))) - expr_b = Add(6, Add(Add(4, 5), Add(Add(0, 2), Add(3, 1)))) - assert is_equal(expr_a, expr_b, math_rules, iters=500) - - benchmark(is_equal, expr_a, expr_b, math_rules, iters=500) - - -def replace_add(egraph, enode, **kwargs): - node = egraph.extract(enode) - enode = egraph.add(node) - return enode - - -def test_dynamic_rewrite(): - rules = [Rewrite(Add[x, Mul[z, y]], replace_add)] - node = Add(1, Mul(2, 3)) - - egraph = EGraph() - egraph.add(node) - egraph.run(rules, 100) - best = egraph.extract(node) - - assert best == node - - -def test_dynamic_condition(): - pass diff --git a/ibis/common/tests/test_graph.py b/ibis/common/tests/test_graph.py index db4f466fdfd2..d081916b122f 100644 --- a/ibis/common/tests/test_graph.py +++ b/ibis/common/tests/test_graph.py @@ -1,8 +1,10 @@ from __future__ import annotations from collections.abc import Mapping, Sequence +from typing import Any import pytest +from koerce import Eq, If, Is, Object, TupleOf, _, argument, pattern from ibis.common.collections import frozendict from ibis.common.graph import ( @@ -18,37 +20,20 @@ dfs_while, traverse, ) -from ibis.common.grounds import Annotable, Concrete -from ibis.common.patterns import Eq, If, InstanceOf, Object, TupleOf, _, pattern class MyNode(Node): - __match_args__ = ("name", "children") - __slots__ = ("name", "children") + name: str + children: tuple[Any, ...] - def __init__(self, name, children): - self.name = name - self.children = children + # def __hash__(self): + # return hash((self.__class__, self.name)) - @property - def __args__(self): - return (self.name, self.children) + # def __eq__(self, other): + # return self.name == other.name - @property - def __argnames__(self): - return ("name", "children") - - def __repr__(self): - return f"{self.__class__.__name__}({self.name})" - - def __hash__(self): - return hash((self.__class__, self.name)) - - def __eq__(self, other): - return self.name == other.name - - def copy(self, name=None, children=None): - return self.__class__(name or self.name, children or self.children) + # def copy(self, name=None, children=None): + # return self.__class__(name or self.name, children or self.children) C = MyNode(name="C", children=[]) @@ -56,7 +41,7 @@ def copy(self, name=None, children=None): E = MyNode(name="E", children=[]) B = MyNode(name="B", children=[D, E]) A = MyNode(name="A", children=[B, C]) -F = MyNode(name="F", children=[{C: D, E: None}]) +F = MyNode(name="F", children=[frozendict({C: D, E: None})]) def test_bfs(): @@ -106,7 +91,7 @@ def test_toposort_cycle_detection(): C = MyNode(name="C", children=[]) A = MyNode(name="A", children=[C]) B = MyNode(name="B", children=[A]) - A.children.append(B) + A.__init__(name="A", children=(C, B)) # A depends on B which depends on A g = Graph(A) @@ -119,7 +104,7 @@ def test_nested_children(): b = MyNode(name="b", children=[a]) c = MyNode(name="c", children=[]) d = MyNode(name="d", children=[]) - e = MyNode(name="e", children=[[b, c], {"d": d}]) + e = MyNode(name="e", children=[(b, c), frozendict(d=d)]) assert bfs(e) == { e: (b, c, d), b: (a,), @@ -151,7 +136,7 @@ def test_traversal_with_filtering_out_root(func): def test_replace_with_filtering_out_root(): - rule = InstanceOf(MyNode) >> MyNode(name="new", children=[]) + rule = Is(MyNode) >> MyNode(name="new", children=[]) result = A.replace(rule, filter=If(lambda x: x.name != "A")) assert result == A @@ -189,7 +174,7 @@ def test_replace_doesnt_recreate_unchanged_nodes(kind): def replacer(node, children): if node is B2: return B3 - return node.__recreate__(children) if children else node + return node.__class__(**children) if children else node res = C.replace(replacer) @@ -201,24 +186,23 @@ def replacer(node, children): def test_example(): - class Example(Annotable, Node): - def __hash__(self): - return hash((self.__class__, self.__args__)) + class Example(Node): + pass class Literal(Example): - value = InstanceOf(object) + value = argument(Is(object)) class BoolLiteral(Literal): - value = InstanceOf(bool) + value = argument(Is(bool)) class And(Example): - operands = TupleOf(InstanceOf(BoolLiteral)) + operands = argument(TupleOf(Is(BoolLiteral))) class Or(Example): - operands = TupleOf(InstanceOf(BoolLiteral)) + operands = argument(TupleOf(Is(BoolLiteral))) class Collect(Example): - arguments = TupleOf(TupleOf(InstanceOf(Example)) | InstanceOf(Example)) + arguments = argument(TupleOf(TupleOf(Is(Example)) | Is(Example))) a = BoolLiteral(True) b = BoolLiteral(False) @@ -242,20 +226,20 @@ class Collect(Example): assert graph == expected -def test_concrete_with_traversable_children(): - class Bool(Concrete, Node): +def test_node_with_traversable_children(): + class Bool(Node): pass class Value(Bool): - value = InstanceOf(bool) + value = argument(Is(bool)) class Either(Bool): - left = InstanceOf(Bool) - right = InstanceOf(Bool) + left = argument(Is(Bool)) + right = argument(Is(Bool)) class All(Bool): - arguments = TupleOf(InstanceOf(Bool)) - strict = InstanceOf(bool) + arguments = argument(TupleOf(Is(Bool))) + strict = argument(Is(bool)) T, F = Value(True), Value(False) @@ -362,7 +346,7 @@ def test_coerce_finder(): assert f("1") is True assert f(1.0) is False - f = _coerce_finder(InstanceOf(bool)) + f = _coerce_finder(Is(bool)) assert f(True) is True assert f(False) is True assert f(1) is False @@ -382,7 +366,7 @@ def test_coerce_replacer(): assert r(D, {}) == E assert r(A, {"name": "A", "children": [B, C]}) == A - r = _coerce_replacer(InstanceOf(MyNode) >> _.copy(name=_.name.lower())) + r = _coerce_replacer(Is(MyNode) >> _.copy(name=_.name.lower())) assert r(C, {"name": "C", "children": []}) == MyNode(name="c", children=[]) assert r(D, {"name": "D", "children": []}) == MyNode(name="d", children=[]) diff --git a/ibis/common/tests/test_graph_benchmarks.py b/ibis/common/tests/test_graph_benchmarks.py index af2e9aea09c7..28c109a20b9a 100644 --- a/ibis/common/tests/test_graph_benchmarks.py +++ b/ibis/common/tests/test_graph_benchmarks.py @@ -3,16 +3,15 @@ from typing import Any, Optional import pytest +from koerce import Object, _ from typing_extensions import Self from ibis.common.collections import frozendict -from ibis.common.deferred import _ from ibis.common.graph import Graph, Node from ibis.common.grounds import Concrete -from ibis.common.patterns import Between, Object -class MyNode(Concrete, Node): +class MyNode(Node, Concrete): a: int b: str c: tuple[int, ...] @@ -56,7 +55,7 @@ def test_dfs(benchmark): def test_replace_pattern(benchmark): node = generate_node(500) - pattern = Object(MyNode, a=Between(lower=100)) >> _.copy(a=_.a + 1) + pattern = Object(MyNode, a=int) >> _.copy(a=_.a + 1) benchmark(node.replace, pattern) diff --git a/ibis/common/tests/test_grounds.py b/ibis/common/tests/test_grounds.py deleted file mode 100644 index 839645883070..000000000000 --- a/ibis/common/tests/test_grounds.py +++ /dev/null @@ -1,1132 +0,0 @@ -from __future__ import annotations - -import copy -import pickle -import sys -import weakref -from abc import ABCMeta -from collections.abc import Callable -from typing import TYPE_CHECKING, Generic, Optional, TypeVar, Union - -import pytest - -from ibis.common.annotations import ( - Argument, - Parameter, - Signature, - ValidationError, - argument, - attribute, - optional, - varargs, - varkwargs, -) -from ibis.common.collections import Mapping, Sequence -from ibis.common.grounds import ( - Abstract, - Annotable, - AnnotableMeta, - Comparable, - Concrete, - Immutable, - Singleton, -) -from ibis.common.patterns import ( - Any, - As, - CoercedTo, - Coercible, - InstanceOf, - Option, - Pattern, - TupleOf, -) -from ibis.tests.util import assert_pickle_roundtrip - -if TYPE_CHECKING: - from typing_extensions import Self - -is_any = InstanceOf(object) -is_bool = InstanceOf(bool) -is_float = InstanceOf(float) -is_int = InstanceOf(int) -is_str = InstanceOf(str) -is_list = InstanceOf(list) - - -class Op(Annotable): - pass - - -class Value(Op): - arg = InstanceOf(object) - - -class StringOp(Value): - arg = InstanceOf(str) - - -class BetweenSimple(Annotable): - value = is_int - lower = optional(is_int, default=0) - upper = optional(is_int, default=None) - - -class BetweenWithExtra(Annotable): - extra = attribute(is_int) - value = is_int - lower = optional(is_int, default=0) - upper = optional(is_int, default=None) - - -class BetweenWithCalculated(Concrete): - value = is_int - lower = optional(is_int, default=0) - upper = optional(is_int, default=None) - - @attribute - def calculated(self): - return self.value + self.lower - - -class VariadicArgs(Concrete): - args = varargs(is_int) - - -class VariadicKeywords(Concrete): - kwargs = varkwargs(is_int) - - -class VariadicArgsAndKeywords(Concrete): - args = varargs(is_int) - kwargs = varkwargs(is_int) - - -T = TypeVar("T", covariant=True) -K = TypeVar("K", covariant=True) -V = TypeVar("V", covariant=True) - - -class List(Concrete, Sequence[T], Coercible): - @classmethod - def __coerce__(self, values, T=None): - values = tuple(values) - if values: - head, *rest = values - return ConsList(head, rest) - else: - return EmptyList() - - -class EmptyList(List[T]): - def __getitem__(self, key): - raise IndexError(key) - - def __len__(self): - return 0 - - -class ConsList(List[T]): - head: T - rest: List[T] - - def __getitem__(self, key): - if key == 0: - return self.head - else: - return self.rest[key - 1] - - def __len__(self): - return len(self.rest) + 1 - - -class Map(Concrete, Mapping[K, V], Coercible): - @classmethod - def __coerce__(self, pairs, K=None, V=None): - pairs = dict(pairs) - if pairs: - head_key = next(iter(pairs)) - head_value = pairs.pop(head_key) - rest = pairs - return ConsMap((head_key, head_value), rest) - else: - return EmptyMap() - - -class EmptyMap(Map[K, V]): - def __getitem__(self, key): - raise KeyError(key) - - def __iter__(self): - return iter(()) - - def __len__(self): - return 0 - - -class ConsMap(Map[K, V]): - head: tuple[K, V] - rest: Map[K, V] - - def __getitem__(self, key): - if key == self.head[0]: - return self.head[1] - else: - return self.rest[key] - - def __iter__(self): - yield self.head[0] - yield from self.rest - - def __len__(self): - return len(self.rest) + 1 - - -class Integer(int, Coercible): - @classmethod - def __coerce__(cls, value): - return Integer(value) - - -class Float(float, Coercible): - @classmethod - def __coerce__(cls, value): - return Float(value) - - -class MyExpr(Concrete): - a: Integer - b: List[Float] - c: Map[str, Integer] - - -class MyInt(int, Coercible): - @classmethod - def __coerce__(cls, value): - return cls(value) - - -class MyFloat(float, Coercible): - @classmethod - def __coerce__(cls, value): - return cls(value) - - -J = TypeVar("J", bound=MyInt, covariant=True) -F = TypeVar("F", bound=MyFloat, covariant=True) -N = TypeVar("N", bound=Union[MyInt, MyFloat], covariant=True) - - -class MyValue(Annotable, Generic[J, F]): - integer: J - floating: F - numeric: N - - -def test_annotable(): - class Between(BetweenSimple): - pass - - assert not issubclass(type(Between), ABCMeta) - assert type(Between) is AnnotableMeta - - argnames = ("value", "lower", "upper") - signature = BetweenSimple.__signature__ - assert isinstance(signature, Signature) - assert tuple(signature.parameters.keys()) == argnames - assert BetweenSimple.__slots__ == argnames - - obj = BetweenSimple(10, lower=2) - assert obj.value == 10 - assert obj.lower == 2 - assert obj.upper is None - assert obj.__argnames__ == argnames - assert obj.__slots__ == ("value", "lower", "upper") - assert not hasattr(obj, "__dict__") - assert obj.__module__ == __name__ - assert type(obj).__qualname__ == "BetweenSimple" - - # test that a child without additional arguments doesn't have __dict__ - obj = Between(10, lower=2) - assert obj.__slots__ == tuple() - assert not hasattr(obj, "__dict__") - assert obj.__module__ == __name__ - assert type(obj).__qualname__ == "test_annotable..Between" - - copied = copy.copy(obj) - assert obj == copied - assert obj is not copied - - copied = obj.copy() - assert obj == copied - assert obj is not copied - - obj2 = Between(10, lower=8) - assert obj.copy(lower=8) == obj2 - - -def test_annotable_with_bound_typevars_properly_coerce_values(): - v = MyValue(1.1, 2.2, 3.3) - assert isinstance(v.integer, MyInt) - assert v.integer == 1 - assert isinstance(v.floating, MyFloat) - assert v.floating == 2.2 - assert isinstance(v.numeric, MyInt) - assert v.numeric == 3 - - -def test_annotable_with_additional_attributes(): - a = BetweenWithExtra(10, lower=2) - b = BetweenWithExtra(10, lower=2) - assert a == b - assert a is not b - - a.extra = 1 - assert a.extra == 1 - assert a != b - - assert a == pickle.loads(pickle.dumps(a)) - - -def test_annotable_is_mutable_by_default(): - # TODO(kszucs): more exhaustive testing of mutability, e.g. setting - # optional value to None doesn't set to the default value - class Op(Annotable): - __slots__ = ("custom",) - - a = is_int - b = is_int - - p = Op(1, 2) - assert p.a == 1 - p.a = 3 - assert p.a == 3 - assert p == Op(a=3, b=2) - - # test that non-annotable attributes can be set as well - p.custom = 1 - assert p.custom == 1 - - -def test_annotable_with_type_annotations() -> None: - # TODO(kszucs): bar: str = None # should raise - class Op1(Annotable): - foo: int - bar: str = "" - - p = Op1(1) - assert p.foo == 1 - assert not p.bar - - class Op2(Annotable): - bar: str = None - - with pytest.raises(ValidationError): - Op2() - - -class RecursiveNode(Annotable): - child: Optional[Self] = None - - -def test_annotable_with_self_typehint() -> None: - node = RecursiveNode(RecursiveNode(RecursiveNode(None))) - assert isinstance(node, RecursiveNode) - assert isinstance(node.child, RecursiveNode) - assert isinstance(node.child.child, RecursiveNode) - assert node.child.child.child is None - - with pytest.raises(ValidationError): - RecursiveNode(1) - - -def test_annotable_with_recursive_generic_type_annotations(): - # testing cons list - pattern = Pattern.from_typehint(List[Integer]) - values = ["1", 2.0, 3] - result = pattern.match(values, {}) - expected = ConsList(1, ConsList(2, ConsList(3, EmptyList()))) - assert result == expected - assert result[0] == 1 - assert result[1] == 2 - assert result[2] == 3 - assert len(result) == 3 - with pytest.raises(IndexError): - result[3] - - # testing cons map - pattern = Pattern.from_typehint(Map[Integer, Float]) - values = {"1": 2, 3: "4.0", 5: 6.0} - result = pattern.match(values, {}) - expected = ConsMap((1, 2.0), ConsMap((3, 4.0), ConsMap((5, 6.0), EmptyMap()))) - assert result == expected - assert result[1] == 2.0 - assert result[3] == 4.0 - assert result[5] == 6.0 - assert len(result) == 3 - with pytest.raises(KeyError): - result[7] - - # testing both encapsulated in a class - expr = MyExpr(a="1", b=["2.0", 3, True], c={"a": "1", "b": 2, "c": 3.0}) - assert expr.a == 1 - assert expr.b == ConsList(2.0, ConsList(3.0, ConsList(1.0, EmptyList()))) - assert expr.c == ConsMap(("a", 1), ConsMap(("b", 2), ConsMap(("c", 3), EmptyMap()))) - - -def test_composition_of_annotable_and_immutable(): - class AnnImm(Annotable, Immutable): - value = is_int - lower = optional(is_int, default=0) - upper = optional(is_int, default=None) - - class ImmAnn(Immutable, Annotable): - # this is the preferable method resolution order - value = is_int - lower = optional(is_int, default=0) - upper = optional(is_int, default=None) - - obj = AnnImm(3, lower=0, upper=4) - with pytest.raises(AttributeError): - obj.value = 1 - - obj = ImmAnn(3, lower=0, upper=4) - with pytest.raises(AttributeError): - obj.value = 1 - - -def test_composition_of_annotable_and_comparable(): - class Between(Comparable, Annotable): - value = is_int - lower = optional(is_int, default=0) - upper = optional(is_int, default=None) - - def __equals__(self, other): - return ( - self.value == other.value - and self.lower == other.lower - and self.upper == other.upper - ) - - a = Between(3, lower=0, upper=4) - b = Between(3, lower=0, upper=4) - c = Between(2, lower=0, upper=4) - - assert Between.__eq__ is Comparable.__eq__ - assert a == b - assert b == a - assert a != c - assert c != a - assert a.__equals__(b) - assert not a.__equals__(c) - - -def test_maintain_definition_order(): - class Between(Annotable): - value = is_int - lower = optional(is_int, default=0) - upper = optional(is_int, default=None) - - param_names = list(Between.__signature__.parameters.keys()) - assert param_names == ["value", "lower", "upper"] - - -def test_signature_inheritance(): - class IntBinop(Annotable): - left = is_int - right = is_int - - class FloatAddRhs(IntBinop): - right = is_float - - class FloatAddClip(FloatAddRhs): - left = is_float - clip_lower = optional(is_int, default=0) - clip_upper = optional(is_int, default=10) - - class IntAddClip(FloatAddClip, IntBinop): - pass - - assert IntBinop.__signature__ == Signature( - [ - Parameter.from_argument("left", annotation=Argument(is_int)), - Parameter.from_argument("right", annotation=Argument(is_int)), - ] - ) - - assert FloatAddRhs.__signature__ == Signature( - [ - Parameter.from_argument("left", annotation=Argument(is_int)), - Parameter.from_argument("right", annotation=Argument(is_float)), - ] - ) - - assert FloatAddClip.__signature__ == Signature( - [ - Parameter.from_argument("left", annotation=Argument(is_float)), - Parameter.from_argument("right", annotation=Argument(is_float)), - Parameter.from_argument( - "clip_lower", annotation=optional(is_int, default=0) - ), - Parameter.from_argument( - "clip_upper", annotation=optional(is_int, default=10) - ), - ] - ) - - assert IntAddClip.__signature__ == Signature( - [ - Parameter.from_argument("left", annotation=Argument(is_int)), - Parameter.from_argument("right", annotation=Argument(is_int)), - Parameter.from_argument( - "clip_lower", annotation=optional(is_int, default=0) - ), - Parameter.from_argument( - "clip_upper", annotation=optional(is_int, default=10) - ), - ] - ) - - -def test_positional_argument_reordering(): - class Farm(Annotable): - ducks = is_int - donkeys = is_int - horses = is_int - goats = is_int - chickens = is_int - - class NoHooves(Farm): - horses = optional(is_int, default=0) - goats = optional(is_int, default=0) - donkeys = optional(is_int, default=0) - - f1 = Farm(1, 2, 3, 4, 5) - f2 = Farm(1, 2, goats=4, chickens=5, horses=3) - f3 = Farm(1, 0, 0, 0, 100) - assert f1 == f2 - assert f1 != f3 - - g1 = NoHooves(1, 2, donkeys=-1) - assert g1.ducks == 1 - assert g1.chickens == 2 - assert g1.donkeys == -1 - assert g1.horses == 0 - assert g1.goats == 0 - - -def test_keyword_argument_reordering(): - class Alpha(Annotable): - a = is_int - b = is_int - - class Beta(Alpha): - c = is_int - d = optional(is_int, default=0) - e = is_int - - obj = Beta(1, 2, 3, 4) - assert obj.a == 1 - assert obj.b == 2 - assert obj.c == 3 - assert obj.e == 4 - assert obj.d == 0 - - obj = Beta(1, 2, 3, 4, 5) - assert obj.d == 5 - assert obj.e == 4 - - -def test_variadic_argument_reordering(): - class Test(Annotable): - a = is_int - b = is_int - args = varargs(is_int) - - class Test2(Test): - c = is_int - args = varargs(is_int) - - with pytest.raises(ValidationError, match="missing a required argument: 'c'"): - Test2(1, 2) - - a = Test2(1, 2, 3) - assert a.a == 1 - assert a.b == 2 - assert a.c == 3 - assert a.args == () - - b = Test2(*range(5)) - assert b.a == 0 - assert b.b == 1 - assert b.c == 2 - assert b.args == (3, 4) - - msg = "only one variadic \\*args parameter is allowed" - with pytest.raises(TypeError, match=msg): - - class Test3(Test): - another_args = varargs(is_int) - - -def test_variadic_keyword_argument_reordering(): - class Test(Annotable): - a = is_int - b = is_int - options = varkwargs(is_int) - - class Test2(Test): - c = is_int - options = varkwargs(is_int) - - with pytest.raises(ValidationError, match="missing a required argument: 'c'"): - Test2(1, 2) - - a = Test2(1, 2, c=3) - assert a.a == 1 - assert a.b == 2 - assert a.c == 3 - assert a.options == {} - - b = Test2(1, 2, c=3, d=4, e=5) - assert b.a == 1 - assert b.b == 2 - assert b.c == 3 - assert b.options == {"d": 4, "e": 5} - - msg = "only one variadic \\*\\*kwargs parameter is allowed" - with pytest.raises(TypeError, match=msg): - - class Test3(Test): - another_options = varkwargs(is_int) - - -def test_variadic_argument(): - class Test(Annotable): - a = is_int - b = is_int - args = varargs(is_int) - - assert Test(1, 2).args == () - assert Test(1, 2, 3).args == (3,) - assert Test(1, 2, 3, 4, 5).args == (3, 4, 5) - - -def test_variadic_keyword_argument(): - class Test(Annotable): - first = is_int - second = is_int - options = varkwargs(is_int) - - assert Test(1, 2).options == {} - assert Test(1, 2, a=3).options == {"a": 3} - assert Test(1, 2, a=3, b=4, c=5).options == {"a": 3, "b": 4, "c": 5} - - -def test_copy_with_variadic_argument(): - class Foo(Annotable): - a = is_int - b = is_int - args = varargs(is_int) - - class Bar(Concrete): - a = is_int - b = is_int - args = varargs(is_int) - - for t in [Foo(1, 2, 3, 4, 5), Bar(1, 2, 3, 4, 5)]: - assert t.a == 1 - assert t.b == 2 - assert t.args == (3, 4, 5) - - u = t.copy(a=6, args=(8, 9, 10)) - assert u.a == 6 - assert u.b == 2 - assert u.args == (8, 9, 10) - - -def test_concrete_copy_with_unknown_argument_raise(): - class Bar(Concrete): - a = is_int - b = is_int - - t = Bar(1, 2) - assert t.a == 1 - assert t.b == 2 - - with pytest.raises(AttributeError, match="Unexpected arguments"): - t.copy(c=3, d=4) - - -def test_concrete_pickling_variadic_arguments(): - v = VariadicArgs(1, 2, 3, 4, 5) - assert v.args == (1, 2, 3, 4, 5) - assert_pickle_roundtrip(v) - - v = VariadicKeywords(a=3, b=4, c=5) - assert v.kwargs == {"a": 3, "b": 4, "c": 5} - assert_pickle_roundtrip(v) - - v = VariadicArgsAndKeywords(1, 2, 3, 4, 5, a=3, b=4, c=5) - assert v.args == (1, 2, 3, 4, 5) - assert v.kwargs == {"a": 3, "b": 4, "c": 5} - assert_pickle_roundtrip(v) - - -def test_dont_copy_default_argument(): - default = tuple() - - class Op(Annotable): - arg = optional(InstanceOf(tuple), default=default) - - op = Op() - assert op.arg is default - - -def test_copy_mutable_with_default_attribute(): - class Test(Annotable): - a = attribute(InstanceOf(dict), default={}) - b = argument(InstanceOf(str)) # required argument - - @attribute - def c(self): - return self.b.upper() - - t = Test("t") - assert t.a == {} - assert t.b == "t" - assert t.c == "T" - - with pytest.raises(ValidationError): - t.a = 1 - t.a = {"map": "ping"} - assert t.a == {"map": "ping"} - - assert t.copy() == t - - u = t.copy(b="u") - assert u.b == "u" - assert u.c == "T" - assert u.a == {"map": "ping"} - - x = t.copy(a={"emp": "ty"}) - assert x.a == {"emp": "ty"} - assert x.b == "t" - - -def test_slots_are_inherited_and_overridable(): - class Op(Annotable): - __slots__ = ("_cache",) # first definition - arg = Any() - - class StringOp(Op): - arg = CoercedTo(str) # new overridden slot - - class StringSplit(StringOp): - sep = CoercedTo(str) # new slot - - class StringJoin(StringOp): - __slots__ = ("_memoize",) # new slot - sep = CoercedTo(str) # new overridden slot - - assert Op.__slots__ == ("_cache", "arg") - assert StringOp.__slots__ == ("arg",) - assert StringSplit.__slots__ == ("sep",) - assert StringJoin.__slots__ == ("_memoize", "sep") - - -def test_multiple_inheritance(): - # multiple inheritance is allowed only if one of the parents has non-empty - # __slots__ definition, otherwise python will raise lay-out conflict - - class Op(Annotable): - __slots__ = ("_hash",) - - class Value(Annotable): - arg = InstanceOf(object) - - class Reduction(Value): - pass - - class UDF(Value): - func = InstanceOf(Callable) - - class UDAF(UDF, Reduction): - arity = is_int - - class A(Annotable): - a = is_int - - class B(Annotable): - b = is_int - - msg = "multiple bases have instance lay-out conflict" - with pytest.raises(TypeError, match=msg): - - class AB(A, B): - ab = is_int - - assert UDAF.__slots__ == ("arity",) - strlen = UDAF(arg=2, func=lambda value: len(str(value)), arity=1) - assert strlen.arg == 2 - assert strlen.arity == 1 - - -@pytest.mark.parametrize( - "obj", - [ - StringOp("something"), - StringOp(arg="something"), - ], -) -def test_pickling_support(obj): - assert_pickle_roundtrip(obj) - - -def test_multiple_inheritance_argument_order(): - class Value(Annotable): - arg = is_any - - class VersionedOp(Value): - version = is_int - - class Reduction(Annotable): - pass - - class Sum(VersionedOp, Reduction): - where = optional(is_bool, default=False) - - assert tuple(Sum.__signature__.parameters.keys()) == ("arg", "version", "where") - - -def test_multiple_inheritance_optional_argument_order(): - class Value(Annotable): - pass - - class ConditionalOp(Annotable): - where = optional(is_bool, default=False) - - class Between(Value, ConditionalOp): - min = is_int - max = is_int - how = optional(is_str, default="strict") - - assert tuple(Between.__signature__.parameters.keys()) == ( - "min", - "max", - "how", - "where", - ) - - -def test_immutability(): - class Value(Annotable, Immutable): - a = is_int - - op = Value(1) - with pytest.raises(AttributeError): - op.a = 3 - - -class BaseValue(Annotable): - i = is_int - j = attribute(is_int) - - -class Value2(BaseValue): - @attribute - def k(self): - return 3 - - -class Value3(BaseValue): - k = attribute(is_int, default=3) - - -class Value4(BaseValue): - k = attribute(Option(is_int), default=None) - - -def test_annotable_with_dict_slot(): - class Flexible(Annotable): - __slots__ = ("__dict__",) - - v = Flexible() - v.a = 1 - v.b = 2 - assert v.a == 1 - assert v.b == 2 - - -def test_annotable_attribute(): - with pytest.raises(ValidationError, match="too many positional arguments"): - BaseValue(1, 2) - - v = BaseValue(1) - assert v.__slots__ == ("i", "j") - assert v.i == 1 - assert not hasattr(v, "j") - v.j = 2 - assert v.j == 2 - - with pytest.raises(ValidationError): - v.j = "foo" - - -def test_annotable_attribute_init(): - assert Value2.__slots__ == ("k",) - v = Value2(1) - - assert v.i == 1 - assert not hasattr(v, "j") - v.j = 2 - assert v.j == 2 - assert v.k == 3 - - v = Value3(1) - assert v.k == 3 - - v = Value4(1) - assert v.k is None - - -def test_annotable_mutability_and_serialization(): - v_ = BaseValue(1) - v_.j = 2 - v = BaseValue(1) - v.j = 2 - assert v_ == v - assert v_.j == v.j == 2 - - assert repr(v) == "BaseValue(i=1)" - w = pickle.loads(pickle.dumps(v)) - assert w.i == 1 - assert w.j == 2 - assert v == w - - v.j = 4 - assert v_ != v - w = pickle.loads(pickle.dumps(v)) - assert w == v - assert repr(w) == "BaseValue(i=1)" - - -def test_initialized_attribute_basics(): - class Value(Annotable): - a = is_int - - @attribute - def double_a(self): - return 2 * self.a - - op = Value(1) - assert op.a == 1 - assert op.double_a == 2 - assert len(Value.__attributes__) == 1 - assert "double_a" in Value.__slots__ - - -def test_initialized_attribute_with_validation(): - class Value(Annotable): - a = is_int - - @attribute(int) - def double_a(self): - return 2 * self.a - - op = Value(1) - assert op.a == 1 - assert op.double_a == 2 - assert len(Value.__attributes__) == 1 - assert "double_a" in Value.__slots__ - - op.double_a = 3 - assert op.double_a == 3 - - with pytest.raises(ValidationError): - op.double_a = "foo" - - -def test_initialized_attribute_mixed_with_classvar(): - class Value(Annotable): - arg = is_int - - shape = "like-arg" - dtype = "like-arg" - - class Reduction(Value): - shape = "scalar" - - class Variadic(Value): - @attribute - def shape(self): - if self.arg > 10: - return "columnar" - else: - return "scalar" - - r = Reduction(1) - assert r.shape == "scalar" - assert "shape" not in r.__slots__ - - v = Variadic(1) - assert v.shape == "scalar" - assert "shape" in v.__slots__ - - v = Variadic(100) - assert v.shape == "columnar" - assert "shape" in v.__slots__ - - -def test_composition_of_annotable_and_singleton() -> None: - class AnnSing(Annotable, Singleton): - value = CoercedTo(int) - - class SingAnn(Singleton, Annotable): - # this is the preferable method resolution order - value = CoercedTo(int) - - # arguments looked up after validation - obj1 = AnnSing("3") - assert AnnSing("3") is obj1 - assert AnnSing(3) is obj1 - assert AnnSing(3.0) is obj1 - - # arguments looked up before validation - obj2 = SingAnn("3") - assert SingAnn("3") is obj2 - obj3 = SingAnn(3) - assert obj3 is not obj2 - assert SingAnn(3) is obj3 - - -def test_concrete(): - assert BetweenWithCalculated.__mro__ == ( - BetweenWithCalculated, - Concrete, - Immutable, - Comparable, - Annotable, - Abstract, - object, - ) - - assert BetweenWithCalculated.__create__.__func__ is Annotable.__create__.__func__ - assert BetweenWithCalculated.__eq__ is Comparable.__eq__ - assert BetweenWithCalculated.__argnames__ == ("value", "lower", "upper") - - # annotable - obj = BetweenWithCalculated(10, lower=5, upper=15) - obj2 = BetweenWithCalculated(10, lower=5, upper=15) - assert obj.value == 10 - assert obj.lower == 5 - assert obj.upper == 15 - assert obj.calculated == 15 - assert obj == obj2 - assert obj is not obj2 - assert obj != (10, 5, 15) - assert obj.__args__ == (10, 5, 15) - assert obj.args == (10, 5, 15) - assert obj.argnames == ("value", "lower", "upper") - - # immutable - with pytest.raises(AttributeError): - obj.value = 11 - - # hashable - assert {obj: 1}.get(obj) == 1 - - # weakrefable - ref = weakref.ref(obj) - assert ref() == obj - - # serializable - assert pickle.loads(pickle.dumps(obj)) == obj - - -def test_composition_of_concrete_and_singleton(): - class ConcSing(Concrete, Singleton): - value = CoercedTo(int) - - class SingConc(Singleton, Concrete): - value = CoercedTo(int) - - # arguments looked up after validation - obj = ConcSing("3") - assert ConcSing("3") is obj - assert ConcSing(3) is obj - assert ConcSing(3.0) is obj - - # arguments looked up before validation - obj = SingConc("3") - assert SingConc("3") is obj - obj2 = SingConc(3) - assert obj2 is not obj - assert SingConc(3) is obj2 - - -def test_init_subclass_keyword_arguments(): - class Test(Annotable): - def __init_subclass__(cls, **kwargs): - super().__init_subclass__() - cls.kwargs = kwargs - - class Test2(Test, something="value", value="something"): - pass - - assert Test2.kwargs == {"something": "value", "value": "something"} - - -def test_argument_order_using_optional_annotations(): - class Case1(Annotable): - results: Optional[tuple[int]] = () - default: Optional[int] = None - - class SimpleCase1(Case1): - base: int - cases: Optional[tuple[int]] = () - - class Case2(Annotable): - results = optional(TupleOf(is_int), default=()) - default = optional(is_int) - - class SimpleCase2(Case1): - base = is_int - cases = optional(TupleOf(is_int), default=()) - - assert ( - SimpleCase1.__argnames__ - == SimpleCase2.__argnames__ - == ("base", "cases", "results", "default") - ) - - -def test_annotable_with_optional_coercible_typehint(): - class Example(Annotable): - value: Optional[MyInt] = None - - assert Example().value is None - assert Example(None).value is None - assert Example(1).value == 1 - assert isinstance(Example(1).value, MyInt) - - -def test_error_message(snapshot): - class Example(Annotable): - a: int - b: int = 0 - c: str = "foo" - d: Optional[float] = None - e: tuple[int, ...] = (1, 2, 3) - f: As[int] = 1 - - with pytest.raises(ValidationError) as exc_info: - Example("1", "2", "3", "4", "5", []) - - # assert "Failed" in str(exc_info.value) - - if sys.version_info >= (3, 11): - target = "error_message_py311.txt" - else: - target = "error_message.txt" - snapshot.assert_match(str(exc_info.value), target) diff --git a/ibis/common/tests/test_grounds_benchmarks.py b/ibis/common/tests/test_grounds_benchmarks.py index 3e4a9bae8774..ee038db0e537 100644 --- a/ibis/common/tests/test_grounds_benchmarks.py +++ b/ibis/common/tests/test_grounds_benchmarks.py @@ -1,10 +1,10 @@ from __future__ import annotations import pytest +from koerce import Annotable, attribute -from ibis.common.annotations import attribute from ibis.common.collections import frozendict -from ibis.common.grounds import Annotable, Concrete +from ibis.common.grounds import Concrete pytestmark = pytest.mark.benchmark diff --git a/ibis/common/tests/test_grounds_py310.py b/ibis/common/tests/test_grounds_py310.py deleted file mode 100644 index ed65dada8651..000000000000 --- a/ibis/common/tests/test_grounds_py310.py +++ /dev/null @@ -1,49 +0,0 @@ -from ibis.common.grounds import Annotable -from ibis.common.patterns import InstanceOf - -IsAny = InstanceOf(object) -IsBool = InstanceOf(bool) -IsFloat = InstanceOf(float) -IsInt = InstanceOf(int) -IsStr = InstanceOf(str) - - -class Node(Annotable): - pass - - -class Literal(Node): - value = InstanceOf((int, float, bool, str)) - dtype = InstanceOf(type) - - def __add__(self, other): - return Add(self, other) - - -class BinaryOperation(Annotable): - left = InstanceOf(Node) - right = InstanceOf(Node) - - -class Add(BinaryOperation): - pass - - -one = Literal(value=1, dtype=int) -two = Literal(value=2, dtype=int) - - -def test_pattern_matching(): - match one: - case Literal(value, dtype=dtype): - assert value == 1 - assert dtype is int - case _: - raise ValueError("Unable to match") - - match (one + two): - case Add(left, right): - assert left == one - assert right == two - case _: - raise ValueError("Unable to match") diff --git a/ibis/common/tests/test_patterns.py b/ibis/common/tests/test_patterns.py deleted file mode 100644 index a0bd329f0597..000000000000 --- a/ibis/common/tests/test_patterns.py +++ /dev/null @@ -1,1340 +0,0 @@ -from __future__ import annotations - -import functools -import re -import sys -from collections.abc import Callable as CallableABC -from collections.abc import Sequence -from dataclasses import dataclass -from typing import ( # noqa: UP035 - Annotated, - Callable, - Generic, - List, - Literal, - Optional, - TypeVar, - Union, -) -from typing import ( - Any as AnyType, -) - -import pytest - -from ibis.common.annotations import ValidationError -from ibis.common.collections import FrozenDict -from ibis.common.deferred import Call, deferred, var -from ibis.common.graph import Node as GraphNode -from ibis.common.patterns import ( - AllOf, - Any, - AnyOf, - Between, - CallableWith, - Capture, - Check, - CoercedTo, - Coercible, - Contains, - Custom, - DictOf, - EqualTo, - FrozenDictOf, - GenericInstanceOf, - GenericSequenceOf, - InstanceOf, - IsIn, - LazyInstanceOf, - Length, - ListOf, - MappingOf, - Node, - NoMatch, - NoneOf, - Not, - Nothing, - Object, - Option, - Pattern, - PatternList, - Replace, - SequenceOf, - Some, - SubclassOf, - TupleOf, - TypeOf, - Variable, - _, - match, - pattern, - replace, -) -from ibis.util import Namespace - - -class Double(Pattern): - def match(self, value, *, context): - return value * 2 - - def __eq__(self, other): - return type(self) is type(other) - - def __hash__(self): - return hash(type(self)) - - -class Min(Pattern): - __slots__ = ("min",) - - def __init__(self, min): - self.min = min - - def match(self, value, context): - if value >= self.min: - return value - else: - return NoMatch - - def __hash__(self): - return hash((self.__class__, self.min)) - - def __eq__(self, other): - return self.__class__ == other.__class__ and self.min == other.min - - -x = Variable("x") -y = Variable("y") -z = Variable("z") - - -def test_immutability_of_patterns(): - p = InstanceOf(int) - with pytest.raises(AttributeError): - p.types = [str] - - -def test_nothing(): - p = Nothing() - assert p.match(1, context={}) is NoMatch - assert p.match(2, context={}) is NoMatch - - -def test_min(): - p = Min(10) - assert p.match(10, context={}) == 10 - assert p.match(9, context={}) is NoMatch - - -def test_double(): - p = Double() - assert p.match(10, context={}) == 20 - - -def test_any(): - p = Any() - assert p.match(1, context={}) == 1 - assert p.match("foo", context={}) == "foo" - assert p.describe() == "matching Any()" - - -def test_pattern_factory_wraps_variable_with_capture(): - v = var("other") - p = pattern(v) - assert p == Capture("other", Any()) - - ctx = {} - assert p.match(10, ctx) == 10 - assert ctx == {"other": 10} - - -def test_match_on_ellipsis(): - assert match(..., 1) == 1 - assert match(..., [1, 2, 3]) == [1, 2, 3] - assert match(..., (1, 2, 3)) == (1, 2, 3) - - -def test_capture(): - ctx = {} - - p = Capture("result", Min(11)) - assert p.match(10, context=ctx) is NoMatch - assert ctx == {} - - assert p.match(12, context=ctx) == 12 - assert ctx == {"result": 12} - - -def test_option(): - p = Option(InstanceOf(str)) - assert Option(str) == p - assert p.match(None, context={}) is None - assert p.match("foo", context={}) == "foo" - assert p.match(1, context={}) is NoMatch - assert p.describe() == "either None or a str" - assert p.describe(plural=True) == "optional strs" - - p = Option(int, default=-1) - assert p.match(None, context={}) == -1 - assert p.match(1, context={}) == 1 - assert p.match(1.0, context={}) is NoMatch - assert p.describe() == "either None or an int" - assert p.describe(plural=True) == "optional ints" - - -def test_check(): - def checker(x): - return x == 10 - - p = Check(checker) - assert p.match(10, context={}) == 10 - assert p.match(11, context={}) is NoMatch - assert p.describe() == "a value that satisfies checker()" - assert p.describe(plural=True) == "values that satisfy checker()" - - -def test_equal_to(): - p = EqualTo(10) - assert p.match(10, context={}) == 10 - assert p.match(11, context={}) is NoMatch - assert p.describe() == "10" - assert p.describe(plural=True) == "10" - - p = EqualTo("10") - assert p.match(10, context={}) is NoMatch - assert p.match("10", context={}) == "10" - assert p.describe() == "'10'" - assert p.describe(plural=True) == "'10'" - - -def test_type_of(): - p = TypeOf(int) - assert p.match(1, context={}) == 1 - assert p.match("foo", context={}) is NoMatch - assert p.describe() == "exactly an int" - assert p.describe(plural=True) == "exactly ints" - - -def test_subclass_of(): - p = SubclassOf(Pattern) - assert p.match(Double, context={}) == Double - assert p.match(int, context={}) is NoMatch - assert p.describe() == "a subclass of Pattern" - assert p.describe(plural=True) == "subclasses of Pattern" - - -def test_instance_of(): - p = InstanceOf(int) - assert p.match(1, context={}) == 1 - assert p.match("foo", context={}) is NoMatch - assert p.describe() == "an int" - assert p.describe(plural=True) == "ints" - - p = InstanceOf((int, str)) - assert p.match(1, context={}) == 1 - assert p.match("foo", context={}) == "foo" - assert p.match(1.0, context={}) is NoMatch - assert p.describe() == "an int or a str" - assert p.describe(plural=True) == "ints or strs" - - p = InstanceOf((int, str, float)) - assert p.describe() == "an int, a str or a float" - - -def test_lazy_instance_of(): - p = LazyInstanceOf("re.Pattern") - assert p.match(re.compile("foo"), context={}) == re.compile("foo") - assert p.match("foo", context={}) is NoMatch - - -T = TypeVar("T", covariant=True) -S = TypeVar("S", covariant=True) - - -@dataclass -class My(Generic[T, S]): - a: T - b: S - c: str - - -def test_generic_instance_of_with_covariant_typevar(): - p = Pattern.from_typehint(My[int, AnyType]) - assert p.match(My(1, 2, "3"), context={}) == My(1, 2, "3") - assert p.describe() == "a My[int, Any]" - - assert match(My[int, AnyType], v := My(1, 2, "3")) == v # noqa: RUF018 - assert match(My[int, int], v := My(1, 2, "3")) == v # noqa: RUF018 - assert match(My[int, float], My(1, 2, "3")) is NoMatch - assert match(My[int, float], v := My(1, 2.0, "3")) == v # noqa: RUF018 - - -def test_generic_instance_of_disallow_nested_coercion(): - class MyString(str, Coercible): - @classmethod - def __coerce__(cls, other): - return cls(str(other)) - - class Box(Generic[T]): - value: T - - p = Pattern.from_typehint(Box[MyString]) - assert isinstance(p, GenericInstanceOf) - assert p.origin == Box - assert p.fields == {"value": InstanceOf(MyString)} - - -def test_coerced_to(): - class MyInt(int, Coercible): - @classmethod - def __coerce__(cls, other): - return MyInt(MyInt(other) + 1) - - p = CoercedTo(int) - assert p.match(1, context={}) == 1 - assert p.match("1", context={}) == 1 - with pytest.raises(ValueError): - p.match("foo", context={}) - - p = CoercedTo(MyInt) - assert p.match(1, context={}) == 2 - assert p.match("1", context={}) == 2 - with pytest.raises(ValueError): - p.match("foo", context={}) - - -def test_generic_coerced_to(): - class DataType: - def __eq__(self, other): - return type(self) is type(other) - - class Integer(DataType): - pass - - class String(DataType): - pass - - class DataShape: - def __eq__(self, other): - return type(self) is type(other) - - class Scalar(DataShape): - pass - - class Array(DataShape): - pass - - class Value(Generic[T, S], Coercible): - @classmethod - def __coerce__(cls, value, T=..., S=...): - return cls(value, Scalar()) - - def dtype(self) -> T: ... - - def shape(self) -> S: ... - - class Literal(Value[T, Scalar]): - __slots__ = ("_value", "_dtype") - - def __init__(self, value, dtype): - self._value = value - self._dtype = dtype - - def dtype(self) -> T: - return self.dtype - - def shape(self) -> DataShape: - return Scalar() - - def __eq__(self, other): - return ( - type(self) is type(other) - and self._value == other._value - and self._dtype == other._dtype - ) - - p = Pattern.from_typehint(Literal[String]) - r = p.match("foo", context={}) - assert r == Literal("foo", Scalar()) - expected = "coercible to a .Literal[.String]" - assert p.describe() == expected - - -def test_not(): - p = Not(InstanceOf(int)) - p1 = ~InstanceOf(int) - - assert p == p1 - assert p.match(1, context={}) is NoMatch - assert p.match("foo", context={}) == "foo" - assert p.describe() == "anything except an int" - assert p.describe(plural=True) == "anything except ints" - - -def test_any_of(): - p = AnyOf(InstanceOf(int), InstanceOf(str)) - p1 = InstanceOf(int) | InstanceOf(str) - - assert p == p1 - assert p.match(1, context={}) == 1 - assert p.match("foo", context={}) == "foo" - assert p.match(1.0, context={}) is NoMatch - assert p.describe() == "an int or a str" - assert p.describe(plural=True) == "ints or strs" - - p = AnyOf(InstanceOf(int), InstanceOf(str), InstanceOf(float)) - assert p.describe() == "an int, a str or a float" - - -def test_all_of(): - def negative(x): - return x < 0 - - p = AllOf(InstanceOf(int), Check(negative)) - p1 = InstanceOf(int) & Check(negative) - - assert p == p1 - assert p.match(1, context={}) is NoMatch - assert p.match(-1, context={}) == -1 - assert p.match(1.0, context={}) is NoMatch - assert p.describe() == "an int then a value that satisfies negative()" - - p = AllOf(InstanceOf(int), CoercedTo(float), CoercedTo(str)) - assert p.match(1, context={}) == "1.0" - assert p.match(1.0, context={}) is NoMatch - assert p.match("1", context={}) is NoMatch - assert p.describe() == "an int, coercible to a float then coercible to a str" - - -def test_none_of(): - def negative(x): - return x < 0 - - p = NoneOf(InstanceOf(int), Check(negative)) - assert p.match(1.0, context={}) == 1.0 - assert p.match(-1.0, context={}) is NoMatch - assert p.match(1, context={}) is NoMatch - assert p.describe() == "anything except an int or a value that satisfies negative()" - - -def test_length(): - with pytest.raises(ValueError): - Length(exactly=3, at_least=3) - with pytest.raises(ValueError): - Length(exactly=3, at_most=3) - - p = Length(exactly=3) - assert p.match([1, 2, 3], context={}) == [1, 2, 3] - assert p.match([1, 2], context={}) is NoMatch - assert p.describe() == "with length exactly 3" - - p = Length(at_least=3) - assert p.match([1, 2, 3], context={}) == [1, 2, 3] - assert p.match([1, 2], context={}) is NoMatch - assert p.describe() == "with length at least 3" - - p = Length(at_most=3) - assert p.match([1, 2, 3], context={}) == [1, 2, 3] - assert p.match([1, 2, 3, 4], context={}) is NoMatch - assert p.describe() == "with length at most 3" - - p = Length(at_least=3, at_most=5) - assert p.match([1, 2], context={}) is NoMatch - assert p.match([1, 2, 3], context={}) == [1, 2, 3] - assert p.match([1, 2, 3, 4], context={}) == [1, 2, 3, 4] - assert p.match([1, 2, 3, 4, 5], context={}) == [1, 2, 3, 4, 5] - assert p.match([1, 2, 3, 4, 5, 6], context={}) is NoMatch - assert p.describe() == "with length between 3 and 5" - - -def test_contains(): - p = Contains(1) - assert p.match([1, 2, 3], context={}) == [1, 2, 3] - assert p.match([2, 3], context={}) is NoMatch - assert p.match({1, 2, 3}, context={}) == {1, 2, 3} - assert p.match({2, 3}, context={}) is NoMatch - assert p.describe() == "containing 1" - assert p.describe(plural=True) == "containing 1" - - p = Contains("1") - assert p.match([1, 2, 3], context={}) is NoMatch - assert p.match(["1", 2, 3], context={}) == ["1", 2, 3] - assert p.match("123", context={}) == "123" - assert p.describe() == "containing '1'" - - -def test_isin(): - p = IsIn([1, 2, 3]) - assert p.match(1, context={}) == 1 - assert p.match(4, context={}) is NoMatch - assert p.describe() == "in {1, 2, 3}" - assert p.describe(plural=True) == "in {1, 2, 3}" - - -def test_sequence_of(): - p = SequenceOf(InstanceOf(str), list) - assert isinstance(p, SequenceOf) - assert p.match(["foo", "bar"], context={}) == ["foo", "bar"] - assert p.match([1, 2], context={}) is NoMatch - assert p.match(1, context={}) is NoMatch - assert p.match("string", context={}) is NoMatch - assert p.describe() == "a list of strs" - assert p.describe(plural=True) == "lists of strs" - - -def test_generic_sequence_of(): - class MyList(list, Coercible): - @classmethod - def __coerce__(cls, value, T=...): - return cls(value) - - p = GenericSequenceOf(InstanceOf(str), MyList) - assert p.match(["foo", "bar"], context={}) == MyList(["foo", "bar"]) - assert p.match("string", context={}) is NoMatch - - p = GenericSequenceOf(InstanceOf(str), tuple, at_least=1) - assert p == GenericSequenceOf(InstanceOf(str), tuple, at_least=1) - assert p.match(("foo", "bar"), context={}) == ("foo", "bar") - assert p.match([], context={}) is NoMatch - - -def test_list_of(): - p = ListOf(InstanceOf(str)) - assert isinstance(p, SequenceOf) - assert p.match(["foo", "bar"], context={}) == ["foo", "bar"] - assert p.match([1, 2], context={}) is NoMatch - assert p.match(1, context={}) is NoMatch - assert p.describe() == "a list of strs" - assert p.describe(plural=True) == "lists of strs" - - -def test_pattern_sequence(): - p = PatternList((InstanceOf(str), InstanceOf(int), InstanceOf(float))) - assert p.match(("foo", 1, 1.0), context={}) == ["foo", 1, 1.0] - assert p.match(["foo", 1, 1.0], context={}) == ["foo", 1, 1.0] - assert p.match(1, context={}) is NoMatch - assert p.describe() == "a tuple of (a str, an int, a float)" - assert p.describe(plural=True) == "tuples of (a str, an int, a float)" - - p = PatternList((InstanceOf(str),)) - assert p.match(("foo",), context={}) == ["foo"] - assert p.match(("foo", "bar"), context={}) is NoMatch - - -def test_mapping_of(): - p = MappingOf(InstanceOf(str), InstanceOf(int)) - assert p.match({"foo": 1, "bar": 2}, context={}) == {"foo": 1, "bar": 2} - assert p.match({"foo": 1, "bar": "baz"}, context={}) is NoMatch - assert p.match(1, context={}) is NoMatch - - p = MappingOf(InstanceOf(str), InstanceOf(str), FrozenDict) - assert p.match({"foo": "bar"}, context={}) == FrozenDict({"foo": "bar"}) - assert p.match({"foo": 1}, context={}) is NoMatch - - -class Foo: - __match_args__ = ("a", "b") - - def __init__(self, a, b): - self.a = a - self.b = b - - def __eq__(self, other): - return type(self) is type(other) and self.a == other.a and self.b == other.b - - -class Bar: - __match_args__ = ("c", "d") - - def __init__(self, c, d): - self.c = c - self.d = d - - def __eq__(self, other): - return type(self) is type(other) and self.c == other.c and self.d == other.d - - -def test_object_pattern(): - p = Object(Foo, 1, b=2) - o = Foo(1, 2) - r = match(p, o) - assert r is o - assert r == Foo(1, 2) - - -def test_object_pattern_complex_type(): - p = Object(Not(Foo), 1, 2) - o = Bar(1, 2) - - # test that the pattern isn't changing the input object if none of - # its arguments are changed by subpatterns - assert match(p, o) is o - assert match(p, Foo(1, 2)) is NoMatch - assert match(p, Bar(1, 3)) is NoMatch - - p = Object(Not(Foo), 1, b=2) - assert match(p, Bar(1, 2)) is NoMatch - - -def test_object_pattern_from_instance_of(): - class MyType: - __match_args__ = ("a", "b") - - def __init__(self, a, b): - self.a = a - self.b = b - - p = pattern(MyType) - assert p == InstanceOf(MyType) - - p_call = p(1, 2) - assert p_call == Object(MyType, 1, 2) - - -def test_object_pattern_from_coerced_to(): - class MyCoercibleType(Coercible): - __match_args__ = ("a", "b") - - def __init__(self, a, b): - self.a = a - self.b = b - - @classmethod - def __coerce__(cls, other): - a, b = other - return cls(a, b) - - p = CoercedTo(MyCoercibleType) - p_call = p(1, 2) - assert p_call == Object(MyCoercibleType, 1, 2) - - -def test_object_pattern_matching_order(): - class Foo: - __match_args__ = ("a", "b", "c") - - def __init__(self, a, b, c): - self.a = a - self.b = b - self.c = c - - def __eq__(self, other): - return ( - type(self) is type(other) - and self.a == other.a - and self.b == other.b - and self.c == other.c - ) - - a = var("a") - p = Object(Foo, a, c=EqualTo(a)) - - assert match(p, Foo(1, 2, 3)) is NoMatch - assert match(p, Foo(1, 2, 1)) == Foo(1, 2, 1) - - -def test_object_pattern_matching_dictionary_field(): - a = Bar(1, FrozenDict()) - b = Bar(1, {}) - c = Bar(1, None) - d = Bar(1, {"foo": 1}) - - pattern = Object(Bar, 1, d={}) - assert match(pattern, a) is a - assert match(pattern, b) is b - assert match(pattern, c) is NoMatch - - pattern = Object(Bar, 1, d=None) - assert match(pattern, a) is NoMatch - assert match(pattern, c) is c - - pattern = Object(Bar, 1, d={"foo": 1}) - assert match(pattern, a) is NoMatch - assert match(pattern, d) is d - - -def test_object_pattern_requires_its_arguments_to_match(): - class Empty: - __match_args__ = () - - msg = "The type to match has fewer `__match_args__`" - with pytest.raises(ValueError, match=msg): - Object(Empty, 1) - - # if the type matcher (first argument of Object) receives a generic pattern - # instead of an explicit type, the validation above cannot occur, so test - # the the pattern still doesn't match when it requires more positional - # arguments than the object `__match_args__` has - pattern = Object(InstanceOf(Empty), var("a")) - assert match(pattern, Empty()) is NoMatch - - pattern = Object(InstanceOf(Empty), a=var("a")) - assert match(pattern, Empty()) is NoMatch - - -def test_callable_with(): - def func(a, b): - return str(a) + b - - def func_with_args(a, b, *args): - return sum((a, b) + args) - - def func_with_kwargs(a, b, c=1, **kwargs): - return str(a) + b + str(c) - - def func_with_optional_keyword_only_kwargs(a, *, c=1): - return a + c - - def func_with_required_keyword_only_kwargs(*, c): - return c - - p = CallableWith([InstanceOf(int), InstanceOf(str)]) - assert p.match(10, context={}) is NoMatch - - msg = "Callable has mandatory keyword-only arguments which cannot be specified" - with pytest.raises(TypeError, match=msg): - p.match(func_with_required_keyword_only_kwargs, context={}) - - # Callable has more positional arguments than expected - p = CallableWith([InstanceOf(int)] * 2) - assert p.match(func_with_kwargs, context={}).__wrapped__ is func_with_kwargs - - # Callable has less positional arguments than expected - p = CallableWith([InstanceOf(int)] * 4) - assert p.match(func_with_kwargs, context={}) is NoMatch - - p = CallableWith([InstanceOf(int)] * 4, InstanceOf(int)) - wrapped = p.match(func_with_args, context={}) - assert wrapped(1, 2, 3, 4) == 10 - - p = CallableWith([InstanceOf(int), InstanceOf(str)], InstanceOf(str)) - wrapped = p.match(func, context={}) - assert wrapped(1, "st") == "1st" - - with pytest.raises(ValidationError): - wrapped(1, 2) - - p = CallableWith([InstanceOf(int)]) - wrapped = p.match(func_with_optional_keyword_only_kwargs, context={}) - assert wrapped(1) == 2 - - -def test_callable_with_default_arguments(): - def f(a: int, b: str, c: str): - return a + int(b) + int(c) - - def g(a: int, b: str, c: str = "0"): - return a + int(b) + int(c) - - h = functools.partial(f, c="0") - - p = Pattern.from_typehint(Callable[[int, str], int]) - assert p.match(f, {}) is NoMatch - assert p.match(g, {}).__wrapped__ == g - assert p.match(h, {}).__wrapped__ == h - - -def test_pattern_list(): - p = PatternList([1, 2, InstanceOf(int), Some(...)]) - assert p.match([1, 2, 3, 4, 5], context={}) == [1, 2, 3, 4, 5] - assert p.match([1, 2, 3, 4, 5, 6], context={}) == [1, 2, 3, 4, 5, 6] - assert p.match([1, 2, 3, 4], context={}) == [1, 2, 3, 4] - assert p.match([1, 2, "3", 4], context={}) is NoMatch - - # subpattern is a simple pattern - p = PatternList([1, 2, CoercedTo(int), Some(...)]) - assert p.match([1, 2, 3.0, 4.0, 5.0], context={}) == [1, 2, 3, 4.0, 5.0] - - # subpattern is a sequence - p = PatternList([1, 2, 3, Some(CoercedTo(int), at_least=1)]) - assert p.match([1, 2, 3, 4.0, 5.0], context={}) == [1, 2, 3, 4, 5] - - -def test_pattern_list_from_tuple_typehint(): - p = Pattern.from_typehint(tuple[str, int, float]) - assert p == PatternList( - [InstanceOf(str), InstanceOf(int), InstanceOf(float)], type=tuple - ) - assert p.match(["foo", 1, 2.0], context={}) == ("foo", 1, 2.0) - assert p.match(("foo", 1, 2.0), context={}) == ("foo", 1, 2.0) - assert p.match(["foo", 1], context={}) is NoMatch - assert p.match(["foo", 1, 2.0, 3.0], context={}) is NoMatch - - class MyTuple(tuple): - pass - - p = Pattern.from_typehint(MyTuple[int, bool]) - assert p == PatternList([InstanceOf(int), InstanceOf(bool)], type=MyTuple) - assert p.match([1, True], context={}) == MyTuple([1, True]) - assert p.match(MyTuple([1, True]), context={}) == MyTuple([1, True]) - assert p.match([1, 2], context={}) is NoMatch - - -def test_pattern_list_unpack(): - integer = pattern(int) - floating = pattern(float) - - assert match([1, 2, *floating], [1, 2, 3]) is NoMatch - assert match([1, 2, *floating], [1, 2, 3.0]) == [1, 2, 3.0] - assert match([1, 2, *floating], [1, 2, 3.0, 4.0]) == [1, 2, 3.0, 4.0] - assert match([1, *floating, *integer], [1, 2.0, 3.0, 4]) == [1, 2.0, 3.0, 4] - assert match([1, *floating, *integer], [1, 2.0, 3.0, 4, 5]) == [ - 1, - 2.0, - 3.0, - 4, - 5, - ] - assert match([1, *floating, *integer], [1, 2.0, 3, 4.0]) is NoMatch - - -def test_matching(): - assert match("foo", "foo") == "foo" - assert match("foo", "bar") is NoMatch - - assert match(InstanceOf(int), 1) == 1 - assert match(InstanceOf(int), "foo") is NoMatch - - assert Capture("pi", InstanceOf(float)) == "pi" @ InstanceOf(float) - assert Capture("pi", InstanceOf(float)) == "pi" @ InstanceOf(float) - - assert match(Capture("pi", InstanceOf(float)), 3.14, ctx := {}) == 3.14 # noqa: RUF018 - assert ctx == {"pi": 3.14} - assert match("pi" @ InstanceOf(float), 3.14, ctx := {}) == 3.14 # noqa: RUF018 - assert ctx == {"pi": 3.14} - - assert match("pi" @ InstanceOf(float), 3.14, ctx := {}) == 3.14 # noqa: RUF018 - assert ctx == {"pi": 3.14} - - assert match(InstanceOf(int) | InstanceOf(float), 3) == 3 - assert match(InstanceOf(object) & InstanceOf(float), 3.14) == 3.14 - - -def test_replace_passes_matched_value_as_underscore(): - class MyInt: - def __init__(self, value): - self.value = value - - def __eq__(self, other): - return self.value == other.value - - p = InstanceOf(int) >> Call(MyInt, value=_) - assert p.match(1, context={}) == MyInt(1) - - -def test_replace_in_nested_object_pattern(): - # simple example using reference to replace a value - b = Variable("b") - p = Object(Foo, 1, b=Replace(Any(), b)) - f = p.match(Foo(1, 2), {"b": 3}) - assert f.a == 1 - assert f.b == 3 - - # nested example using reference to replace a value - d = Variable("d") - p = Object(Foo, 1, b=Object(Bar, 2, d=Replace(Any(), d))) - g = p.match(Foo(1, Bar(2, 3)), {"d": 4}) - assert g.b.c == 2 - assert g.b.d == 4 - - # nested example using reference to replace a value with a captured value - p = Object( - Foo, - 1, - b=Replace(Object(Bar, 2, d="d" @ Any()), lambda _, d: Foo(-1, b=d)), - ) - h = p.match(Foo(1, Bar(2, 3)), {}) - assert isinstance(h, Foo) - assert h.a == 1 - assert isinstance(h.b, Foo) - assert h.b.b == 3 - - # same example with more syntactic sugar - o = Namespace(pattern, module=__name__) - c = Namespace(deferred, module=__name__) - - d = Variable("d") - p = o.Foo(1, b=o.Bar(2, d=d @ Any()) >> c.Foo(-1, b=d)) - h1 = p.match(Foo(1, Bar(2, 3)), {}) - assert isinstance(h1, Foo) - assert h1.a == 1 - assert isinstance(h1.b, Foo) - assert h1.b.b == 3 - - -def test_replace_decorator(): - @replace(int) - def sub(_): - return _ - 1 - - assert match(sub, 1) == 0 - assert match(sub, 2) == 1 - - -def test_replace_using_deferred(): - p = Namespace(pattern, module=__name__) - d = Namespace(deferred, module=__name__) - - x = var("x") - y = var("y") - - pat = p.Foo(x, b=y) >> d.Foo(x, b=y) - assert match(pat, Foo(1, 2)) == Foo(1, 2) - - pat = p.Foo(x, b=y) >> d.Foo(x, b=(y + 1) * x) - assert match(pat, Foo(2, 3)) == Foo(2, 8) - - pat = p.Foo(x, y @ p.Bar) >> d.Foo(x, b=y.c + y.d) - assert match(pat, Foo(1, Bar(2, 3))) == Foo(1, 5) - - -def test_matching_sequence_pattern(): - assert match([], []) == [] - assert match([], [1]) is NoMatch - - assert match([1, 2, 3, 4, Some(...)], list(range(1, 9))) == list(range(1, 9)) - assert match([1, 2, 3, 4, Some(...)], list(range(1, 3))) is NoMatch - assert match([1, 2, 3, 4, Some(...)], list(range(1, 5))) == list(range(1, 5)) - assert match([1, 2, 3, 4, Some(...)], list(range(1, 6))) == list(range(1, 6)) - - assert match([Some(...), 3, 4], list(range(5))) == list(range(5)) - assert match([Some(...), 3, 4], list(range(3))) is NoMatch - - assert match([0, 1, Some(...), 4], list(range(5))) == list(range(5)) - assert match([0, 1, Some(...), 4], list(range(4))) is NoMatch - - assert match([Some(...)], list(range(5))) == list(range(5)) - assert match([Some(...), 2, 3, 4, Some(...)], list(range(8))) == list(range(8)) - - -def test_matching_sequence_pattern_keeps_original_type(): - assert match([1, 2, 3, 4, Some(...)], tuple(range(1, 9))) == list(range(1, 9)) - assert match((1, 2, 3, Some(...)), [1, 2, 3, 4, 5]) == (1, 2, 3, 4, 5) - - -def test_matching_sequence_with_captures(): - v = list(range(1, 9)) - assert match([1, 2, 3, 4, Some(...)], v) == v - assert match([1, 2, 3, 4, "rest" @ Some(...)], v, ctx := {}) == v # noqa: RUF018 - assert ctx == {"rest": [5, 6, 7, 8]} - - v = list(range(5)) - assert match([0, 1, x @ Some(...), 4], v, ctx := {}) == v # noqa: RUF018 - assert ctx == {"x": [2, 3]} - assert match([0, 1, "var" @ Some(...), 4], v, ctx := {}) == v # noqa: RUF018 - assert ctx == {"var": [2, 3]} - - p = [ - 0, - 1, - "ints" @ Some(int), - Some("last_float" @ InstanceOf(float)), - 6, - ] - v = [0, 1, 2, 3, 4.0, 5.0, 6] - assert match(p, v, ctx := {}) == v # noqa: RUF018 - assert ctx == {"ints": [2, 3], "last_float": 5.0} - - -def test_matching_sequence_remaining(): - three = [1, 2, 3] - four = [1, 2, 3, 4] - five = [1, 2, 3, 4, 5] - - assert match([1, 2, 3, Some(int, at_least=1)], four) == four - assert match([1, 2, 3, Some(int, at_least=1)], three) is NoMatch - assert match([1, 2, 3, Some(int)], three) == three - assert match([1, 2, 3, Some(int, at_most=1)], three) == three - assert match([1, 2, 3, Some(InstanceOf(int) & Between(0, 10))], five) == five - assert match([1, 2, 3, Some(InstanceOf(int) & Between(0, 4))], five) is NoMatch - assert match([1, 2, 3, Some(int, at_least=2)], four) is NoMatch - assert match([1, 2, 3, "res" @ Some(int, at_least=2)], five, ctx := {}) == five # noqa: RUF018 - assert ctx == {"res": [4, 5]} - - -def test_matching_sequence_complicated(): - pat = [ - 1, - "a" @ Some(InstanceOf(int) & Check(lambda x: x < 10)), - 4, - "b" @ Some(...), - 8, - 9, - ] - expected = { - "a": [2, 3], - "b": [5, 6, 7], - } - assert match(pat, range(1, 10), ctx := {}) == list(range(1, 10)) # noqa: RUF018 - assert ctx == expected - - pat = [1, 2, Capture("remaining", Some(...))] - expected = {"remaining": [3, 4, 5, 6, 7, 8, 9]} - assert match(pat, range(1, 10), ctx := {}) == list(range(1, 10)) # noqa: RUF018 - assert ctx == expected - - v = [0, [1, 2, "3"], [1, 2, "4"], 3] - assert match([0, Some([1, 2, str]), 3], v) == v - - -def test_pattern_sequence_with_nested_some(): - ctx = {} - res = match([0, "subseq" @ Some(1, 2), 3], [0, 1, 2, 1, 2, 3], ctx) - assert res == [0, 1, 2, 1, 2, 3] - assert ctx == {"subseq": [1, 2, 1, 2]} - - assert match([0, Some(1), 2, 3], [0, 2, 3]) == [0, 2, 3] - assert match([0, Some(1, at_least=1), 2, 3], [0, 2, 3]) is NoMatch - assert match([0, Some(1, at_least=1), 2, 3], [0, 1, 2, 3]) == [0, 1, 2, 3] - assert match([0, Some(1, at_least=2), 2, 3], [0, 1, 2, 3]) is NoMatch - assert match([0, Some(1, at_least=2), 2, 3], [0, 1, 1, 2, 3]) == [0, 1, 1, 2, 3] - assert match([0, Some(1, at_most=2), 2, 3], [0, 1, 1, 2, 3]) == [0, 1, 1, 2, 3] - assert match([0, Some(1, at_most=1), 2, 3], [0, 1, 1, 2, 3]) is NoMatch - assert match([0, Some(1, exactly=1), 2, 3], [0, 2, 3]) is NoMatch - assert match([0, Some(1, exactly=1), 2, 3], [0, 1, 2, 3]) == [0, 1, 2, 3] - assert match([0, Some(1, exactly=0), 2, 3], [0, 2, 3]) == [0, 2, 3] - assert match([0, Some(1, exactly=0), 2, 3], [0, 1, 2, 3]) is NoMatch - - assert match([0, Some(1, Some(2)), 3], [0, 3]) == [0, 3] - assert match([0, Some(1, Some(2)), 3], [0, 1, 3]) == [0, 1, 3] - assert match([0, Some(1, Some(2)), 3], [0, 1, 2, 3]) == [0, 1, 2, 3] - assert match([0, Some(1, Some(2)), 3], [0, 1, 2, 2, 3]) == [0, 1, 2, 2, 3] - assert match([0, Some(1, Some(2)), 3], [0, 1, 2, 2, 2, 3]) == [0, 1, 2, 2, 2, 3] - assert match([0, Some(1, Some(2)), 3], [0, 1, 2, 1, 2, 2, 3]) == [ - 0, - 1, - 2, - 1, - 2, - 2, - 3, - ] - assert match([0, Some(1, Some(2), at_least=1), 3], [0, 1, 2, 3]) == [0, 1, 2, 3] - assert match([0, Some(1, Some(2), at_least=1), 3], [0, 1, 3]) == [0, 1, 3] - assert match([0, Some(1, Some(2, at_least=2), at_least=1), 3], [0, 1, 3]) is NoMatch - assert ( - match([0, Some(1, Some(2, at_least=2), at_least=1), 3], [0, 1, 2, 3]) is NoMatch - ) - assert match([0, Some(1, Some(2, at_least=2), at_least=1), 3], [0, 1, 2, 2, 3]) == [ - 0, - 1, - 2, - 2, - 3, - ] - - -@pytest.mark.parametrize( - ("pattern", "value", "expected"), - [ - (InstanceOf(bool), True, True), - (InstanceOf(str), "foo", "foo"), - (InstanceOf(int), 8, 8), - (InstanceOf(int), 1, 1), - (InstanceOf(float), 1.0, 1.0), - (IsIn({"a", "b"}), "a", "a"), - (IsIn({"a": 1, "b": 2}), "a", "a"), - (IsIn(["a", "b"]), "a", "a"), - (IsIn(("a", "b")), "b", "b"), - (IsIn({"a", "b", "c"}), "c", "c"), - (TupleOf(InstanceOf(int)), (1, 2, 3), (1, 2, 3)), - (PatternList((InstanceOf(int), InstanceOf(str))), (1, "a"), [1, "a"]), - (ListOf(InstanceOf(str)), ["a", "b"], ["a", "b"]), - (AnyOf(InstanceOf(str), InstanceOf(int)), "foo", "foo"), - (AnyOf(InstanceOf(str), InstanceOf(int)), 7, 7), - ( - AllOf(InstanceOf(int), Check(lambda v: v >= 3), Check(lambda v: v >= 8)), - 10, - 10, - ), - ( - MappingOf(InstanceOf(str), InstanceOf(int)), - {"a": 1, "b": 2}, - {"a": 1, "b": 2}, - ), - ], -) -def test_various_patterns(pattern, value, expected): - assert pattern.match(value, context={}) == expected - - -@pytest.mark.parametrize( - ("pattern", "value"), - [ - (InstanceOf(bool), "foo"), - (InstanceOf(str), True), - (InstanceOf(int), 8.1), - (Min(3), 2), - (InstanceOf(int), None), - (InstanceOf(float), 1), - (IsIn(["a", "b"]), "c"), - (IsIn({"a", "b"}), "c"), - (IsIn({"a": 1, "b": 2}), "d"), - (TupleOf(InstanceOf(int)), (1, 2.0, 3)), - (ListOf(InstanceOf(str)), ["a", "b", None]), - (AnyOf(InstanceOf(str), Min(4)), 3.14), - (AnyOf(InstanceOf(str), Min(10)), 9), - (AllOf(InstanceOf(int), Min(3), Min(8)), 7), - (DictOf(InstanceOf(int), InstanceOf(str)), {"a": 1, "b": 2}), - ], -) -def test_various_not_matching_patterns(pattern, value): - assert pattern.match(value, context={}) is NoMatch - - -@pattern -def endswith_d(s, ctx): - if not s.endswith("d"): - return NoMatch - return s - - -def test_pattern_decorator(): - assert endswith_d.match("abcd", context={}) == "abcd" - assert endswith_d.match("abc", context={}) is NoMatch - - -@pytest.mark.parametrize( - ("annot", "expected"), - [ - (int, InstanceOf(int)), - (str, InstanceOf(str)), - (bool, InstanceOf(bool)), - (Optional[int], Option(InstanceOf(int))), - (Optional[Union[str, int]], Option(AnyOf(InstanceOf(str), InstanceOf(int)))), - (Union[int, str], AnyOf(InstanceOf(int), InstanceOf(str))), - (Annotated[int, Min(3)], AllOf(InstanceOf(int), Min(3))), - (list[int], SequenceOf(InstanceOf(int), list)), - ( - tuple[int, float, str], - PatternList( - (InstanceOf(int), InstanceOf(float), InstanceOf(str)), type=tuple - ), - ), - (tuple[int, ...], TupleOf(InstanceOf(int))), - ( - dict[str, float], - DictOf(InstanceOf(str), InstanceOf(float)), - ), - (FrozenDict[str, int], FrozenDictOf(InstanceOf(str), InstanceOf(int))), - (Literal["alpha", "beta", "gamma"], IsIn(("alpha", "beta", "gamma"))), - ( - Callable[[str, int], str], - CallableWith((InstanceOf(str), InstanceOf(int)), InstanceOf(str)), - ), - (Callable, InstanceOf(CallableABC)), - ], -) -def test_pattern_from_typehint(annot, expected): - assert Pattern.from_typehint(annot) == expected - - -@pytest.mark.skipif(sys.version_info < (3, 10), reason="requires python3.10 or higher") -def test_pattern_from_typehint_uniontype(): - # uniontype marks `type1 | type2` annotations and it's different from - # Union[type1, type2] - validator = Pattern.from_typehint(str | int | float) - assert validator == AnyOf(InstanceOf(str), InstanceOf(int), InstanceOf(float)) - - -def test_pattern_from_typehint_disable_coercion(): - class MyFloat(float, Coercible): - @classmethod - def __coerce__(cls, obj): - return cls(float(obj)) - - p = Pattern.from_typehint(MyFloat, allow_coercion=True) - assert isinstance(p, CoercedTo) - - p = Pattern.from_typehint(MyFloat, allow_coercion=False) - assert isinstance(p, InstanceOf) - - -class PlusOne(Coercible): - __slots__ = ("value",) - - def __init__(self, value): - self.value = value - - @classmethod - def __coerce__(cls, obj): - return cls(obj + 1) - - def __eq__(self, other): - return type(self) is type(other) and self.value == other.value - - -class PlusOneRaise(PlusOne): - @classmethod - def __coerce__(cls, obj): - if isinstance(obj, cls): - return obj - else: - raise ValueError("raise on coercion") - - -class PlusOneChild(PlusOne): - pass - - -class PlusTwo(PlusOne): - @classmethod - def __coerce__(cls, obj): - return obj + 2 - - -def test_pattern_from_coercible_protocol(): - s = Pattern.from_typehint(PlusOne) - assert s.match(1, context={}) == PlusOne(2) - assert s.match(10, context={}) == PlusOne(11) - - -def test_pattern_coercible_bypass_coercion(): - s = Pattern.from_typehint(PlusOneRaise) - # bypass coercion since it's already an instance of SomethingRaise - assert s.match(PlusOneRaise(10), context={}) == PlusOneRaise(10) - # but actually call __coerce__ if it's not an instance - with pytest.raises(ValueError, match="raise on coercion"): - s.match(10, context={}) - - -def test_pattern_coercible_checks_type(): - s = Pattern.from_typehint(PlusOneChild) - v = Pattern.from_typehint(PlusTwo) - - assert s.match(1, context={}) == PlusOneChild(2) - - assert PlusTwo.__coerce__(1) == 3 - assert v.match(1, context={}) is NoMatch - - -class DoubledList(Coercible, list[T]): - @classmethod - def __coerce__(cls, obj): - return cls(list(obj) * 2) - - -def test_pattern_coercible_sequence_type(): - s = Pattern.from_typehint(Sequence[PlusOne]) - with pytest.raises(TypeError, match=r"Sequence\(\) takes no arguments"): - s.match([1, 2, 3], context={}) - - s = Pattern.from_typehint(list[PlusOne]) - assert s == SequenceOf(CoercedTo(PlusOne), type=list) - assert s.match([1, 2, 3], context={}) == [PlusOne(2), PlusOne(3), PlusOne(4)] - - s = Pattern.from_typehint(tuple[PlusOne, ...]) - assert s == TupleOf(CoercedTo(PlusOne)) - assert s.match([1, 2, 3], context={}) == (PlusOne(2), PlusOne(3), PlusOne(4)) - - s = Pattern.from_typehint(DoubledList[PlusOne]) - assert s == GenericSequenceOf(CoercedTo(PlusOne), type=DoubledList) - assert s.match([1, 2, 3], context={}) == DoubledList( - [PlusOne(2), PlusOne(3), PlusOne(4), PlusOne(2), PlusOne(3), PlusOne(4)] - ) - - -def test_pattern_function(): - class MyNegativeInt(int, Coercible): - @classmethod - def __coerce__(cls, other): - return cls(-int(other)) - - class Box(Generic[T]): - value: T - - def f(x): - return x > 0 - - # ... is treated the same as Any() - assert pattern(...) == Any() - assert pattern(Any()) == Any() - assert pattern(True) == EqualTo(True) - - # plain types are converted to InstanceOf patterns - assert pattern(int) == InstanceOf(int) - # no matter whether the type implements the coercible protocol or not - assert pattern(MyNegativeInt) == InstanceOf(MyNegativeInt) - - # generic types are converted to GenericInstanceOf patterns - assert pattern(Box[int]) == GenericInstanceOf(Box[int]) - # no matter whethwe the origin type implements the coercible protocol or not - assert pattern(Box[MyNegativeInt]) == GenericInstanceOf(Box[MyNegativeInt]) - - # sequence typehints are converted to the appropriate sequence checkers - assert pattern(List[int]) == ListOf(InstanceOf(int)) # noqa: UP006 - - # spelled out sequences construct a more advanced pattern sequence - assert pattern([int, str, 1]) == PatternList( - [InstanceOf(int), InstanceOf(str), EqualTo(1)] - ) - - # matching deferred to user defined functions - assert pattern(f) == Custom(f) - - # matching mapping values - assert pattern({"a": 1, "b": 2}) == EqualTo(FrozenDict({"a": 1, "b": 2})) - - -class Term(GraphNode): - def __eq__(self, other): - return type(self) is type(other) and self.__args__ == other.__args__ - - def __hash__(self): - return hash((self.__class__, self.__args__)) - - def __repr__(self): - return f"{self.__class__.__name__}({', '.join(map(repr, self.__args__))})" - - -class Lit(Term): - __slots__ = ("value",) - __argnames__ = ("value",) - __match_args__ = ("value",) - - def __init__(self, value): - self.value = value - - @property - def __args__(self): - return (self.value,) - - -class Binary(Term): - __slots__ = ("left", "right") - __argnames__ = ("left", "right") - __match_args__ = ("left", "right") - - def __init__(self, left, right): - self.left = left - self.right = right - - @property - def __args__(self): - return (self.left, self.right) - - -class Add(Binary): - pass - - -class Mul(Binary): - pass - - -one = Lit(1) -two = Mul(Lit(2), one) - -three = Add(one, two) -six = Mul(two, three) -seven = Add(one, six) -fourteen = Add(seven, seven) - - -def test_node(): - pat = Node( - InstanceOf(Add), - each_arg=Replace(Object(Lit, value=Capture("v")), lambda _, v: Lit(v + 100)), - ) - result = six.replace(pat) - assert result == Mul(two, Add(Lit(101), two)) diff --git a/ibis/common/tests/test_temporal.py b/ibis/common/tests/test_temporal.py index 2def166bb8e4..5b6d14ec0977 100644 --- a/ibis/common/tests/test_temporal.py +++ b/ibis/common/tests/test_temporal.py @@ -6,8 +6,8 @@ import dateutil import pytest import pytz +from koerce import As -from ibis.common.patterns import CoercedTo from ibis.common.temporal import ( DateUnit, IntervalUnit, @@ -47,10 +47,10 @@ def test_interval_units(singular, plural, short): @interval_units def test_interval_unit_coercions(singular, plural, short): u = IntervalUnit[singular.upper()] - v = CoercedTo(IntervalUnit) - assert v.match(singular, {}) == u - assert v.match(plural, {}) == u - assert v.match(short, {}) == u + v = As(IntervalUnit) + assert v.apply(singular, {}) == u + assert v.apply(plural, {}) == u + assert v.apply(short, {}) == u @pytest.mark.parametrize( @@ -66,8 +66,8 @@ def test_interval_unit_coercions(singular, plural, short): ], ) def test_interval_unit_aliases(alias, expected): - v = CoercedTo(IntervalUnit) - assert v.match(alias, {}) == IntervalUnit(expected) + v = As(IntervalUnit) + assert v.apply(alias, {}) == IntervalUnit(expected) @pytest.mark.parametrize( @@ -114,9 +114,9 @@ def test_normalize_timedelta_invalid(value, unit): def test_interval_unit_compatibility(): - v = CoercedTo(IntervalUnit) + v = As(IntervalUnit) for unit in itertools.chain(DateUnit, TimeUnit): - interval = v.match(unit, {}) + interval = v.apply(unit, {}) assert isinstance(interval, IntervalUnit) assert unit.value == interval.value diff --git a/ibis/common/tests/test_typing.py b/ibis/common/tests/test_typing.py index 8556dc3e8227..8f75dacce175 100644 --- a/ibis/common/tests/test_typing.py +++ b/ibis/common/tests/test_typing.py @@ -8,9 +8,6 @@ DefaultTypeVars, Sentinel, evaluate_annotations, - get_bound_typevars, - get_type_hints, - get_type_params, ) T = TypeVar("T") @@ -51,27 +48,6 @@ def test_evaluate_annotations_with_self() -> None: assert hints == {"a": Union[int, myhint], "b": Optional[myhint]} -def test_get_type_hints() -> None: - hints = get_type_hints(My) - assert hints == {"a": T, "b": S, "c": str} - - hints = get_type_hints(My, include_properties=True) - assert hints == {"a": T, "b": S, "c": str, "d": Optional[str], "e": U} - - hints = get_type_hints(MyChild, include_properties=True) - assert hints == {"a": T, "b": S, "c": str, "d": Optional[str], "e": U} - - # test that we don't actually mutate the My.__annotations__ - hints = get_type_hints(My) - assert hints == {"a": T, "b": S, "c": str} - - hints = get_type_hints(example) - assert hints == {"a": int, "b": str, "return": str} - - hints = get_type_hints(example, include_properties=True) - assert hints == {"a": int, "b": str, "return": str} - - class A(Generic[T, S, U]): a: int b: str @@ -93,29 +69,6 @@ class C(B[T, str]): ... class D(C[bool]): ... -def test_get_type_params() -> None: - assert get_type_params(A[int, float, str]) == {"T": int, "S": float, "U": str} - assert get_type_params(B[int, bool]) == {"T": int, "S": bool, "U": bytes} - assert get_type_params(C[int]) == {"T": int, "S": str, "U": bytes} - assert get_type_params(D) == {"T": bool, "S": str, "U": bytes} - - -def test_get_bound_typevars() -> None: - expected = { - T: ("t", int), - S: ("s", float), - U: ("u", str), - } - assert get_bound_typevars(A[int, float, str]) == expected - - expected = { - T: ("t", int), - S: ("s", bool), - U: ("u", bytes), - } - assert get_bound_typevars(B[int, bool]) == expected - - def test_default_type_vars(): T = TypeVar("T") U = TypeVar("U", default=float) diff --git a/ibis/common/typing.py b/ibis/common/typing.py index 33da104f4150..0d6ba3d39301 100644 --- a/ibis/common/typing.py +++ b/ibis/common/typing.py @@ -1,21 +1,10 @@ from __future__ import annotations import inspect -import re import sys -from abc import abstractmethod from itertools import zip_longest -from typing import TYPE_CHECKING, Any, Optional, TypeVar, get_args, get_origin -from typing import get_type_hints as _get_type_hints - -from ibis.common.bases import Abstract -from ibis.common.caching import memoize - -if TYPE_CHECKING: - from typing_extensions import Self - from types import UnionType -from typing import TypeAlias +from typing import Any, Optional, TypeAlias, TypeVar # Keep this alias in sync with unittest.case._ClassInfo _ClassInfo: TypeAlias = type | UnionType | tuple["_ClassInfo", ...] @@ -28,128 +17,6 @@ VarTuple = tuple[T, ...] -@memoize -def get_type_hints( - obj: Any, - include_extras: bool = True, - include_properties: bool = False, -) -> dict[str, Any]: - """Get type hints for a callable or class. - - Extension of typing.get_type_hints that supports getting type hints for - class properties. - - Parameters - ---------- - obj - Callable or class to get type hints for. - include_extras - Whether to include extra type hints such as Annotated. - include_properties - Whether to include type hints for class properties. - - Returns - ------- - Mapping of parameter or attribute name to type hint. - - """ - try: - hints = _get_type_hints(obj, include_extras=include_extras) - except TypeError: - return {} - - if include_properties: - for name in dir(obj): - attr = getattr(obj, name) - if isinstance(attr, property): - annots = _get_type_hints(attr.fget, include_extras=include_extras) - if return_annot := annots.get("return"): - hints[name] = return_annot - - return hints - - -@memoize -def get_type_params(obj: Any) -> dict[str, type]: - """Get type parameters for a generic class. - - Parameters - ---------- - obj - Generic class to get type parameters for. - - Returns - ------- - Mapping of type parameter name to type. - - Examples - -------- - >>> from typing import Dict, List - >>> class MyList(List[T]): ... - >>> get_type_params(MyList[int]) - {'T': } - >>> class MyDict(Dict[T, U]): ... - >>> get_type_params(MyDict[int, str]) - {'T': , 'U': } - - """ - args = get_args(obj) - origin = get_origin(obj) or obj - bases = getattr(origin, "__orig_bases__", ()) - params = getattr(origin, "__parameters__", ()) - - result = {} - for base in bases: - result.update(get_type_params(base)) - - param_names = (p.__name__ for p in params) - result.update(zip(param_names, args)) - - return result - - -@memoize -def get_bound_typevars(obj: Any) -> dict[TypeVar, tuple[str, type]]: - """Get type variables bound to concrete types for a generic class. - - Parameters - ---------- - obj - Generic class to get type variables for. - - Returns - ------- - Mapping of type variable to attribute name and type. - - Examples - -------- - >>> from typing import Generic - >>> class MyStruct(Generic[T, U]): - ... a: T - ... b: U - >>> get_bound_typevars(MyStruct[int, str]) - {~T: ('a', ), ~U: ('b', )} - >>> - >>> class MyStruct(Generic[T, U]): - ... a: T - ... - ... @property - ... def myprop(self) -> U: ... - >>> get_bound_typevars(MyStruct[float, bytes]) - {~T: ('a', ), ~U: ('myprop', )} - - """ - origin = get_origin(obj) or obj - hints = get_type_hints(origin, include_properties=True) - params = get_type_params(obj) - - result = {} - for attr, typ in hints.items(): - if isinstance(typ, TypeVar): - result[typ] = (attr, params[typ.__name__]) - return result - - def evaluate_annotations( annots: dict[str, str], module_name: str, @@ -202,19 +69,6 @@ def evaluate_annotations( return result -def format_typehint(typ: Any) -> str: - if isinstance(typ, type): - return typ.__name__ - elif isinstance(typ, TypeVar): - if typ.__bound__ is None: - return str(typ) - else: - return format_typehint(typ.__bound__) - else: - # remove the module name from the typehint, including generics - return re.sub(r"(\w+\.)+", "", str(typ)) - - class DefaultTypeVars: """Enable using default type variables in generic classes (PEP-0696).""" @@ -239,22 +93,6 @@ def __call__(self, *args: Any, **kwargs: Any) -> Any: raise TypeError("Sentinels are not constructible") -class CoercionError(Exception): ... - - -class Coercible(Abstract): - """Protocol for defining coercible types. - - Coercible types define a special `__coerce__` method that accepts an object - with an instance of the type. Used in conjunction with the `coerced_to`` - pattern to coerce arguments to a specific type. - """ - - @classmethod - @abstractmethod - def __coerce__(cls, value: Any, **kwargs: Any) -> Self: ... - - def get_defining_frame(obj): """Locate the outermost frame where `obj` is defined.""" for frame_info in inspect.stack()[::-1]: diff --git a/ibis/config.py b/ibis/config.py index ff1d1770160f..e27edeb076cf 100644 --- a/ibis/config.py +++ b/ibis/config.py @@ -4,13 +4,20 @@ from collections.abc import Callable # noqa: TCH003 from typing import Annotated, Any, Optional +from koerce import Annotable, pattern from public import public import ibis.common.exceptions as com -from ibis.common.grounds import Annotable -from ibis.common.patterns import Between -PosInt = Annotated[int, Between(lower=0)] + +@pattern +def is_positive(value, **ctx): + if value < 0: + raise ValueError(f"{value} must be positive") + return value + + +PosInt = Annotated[int, is_positive] class Config(Annotable): diff --git a/ibis/examples/__init__.py b/ibis/examples/__init__.py index 78afb0600721..d3e95d8f89c0 100644 --- a/ibis/examples/__init__.py +++ b/ibis/examples/__init__.py @@ -161,7 +161,9 @@ def __getattr__(name: str) -> Example: description = meta[name].get("description") - fields = {"__doc__": description} if description is not None else {} + fields = {"__module__": __name__} + if description is not None: + fields["__doc__"] = description example_class = type(name, (Example,), fields) example_class.fetch.__doc__ = _FETCH_DOCSTRING_TEMPLATE.format(name=name) diff --git a/ibis/expr/api.py b/ibis/expr/api.py index ce720bf9c453..6baa2980bdf1 100644 --- a/ibis/expr/api.py +++ b/ibis/expr/api.py @@ -11,6 +11,8 @@ from collections import Counter from typing import TYPE_CHECKING, Any, overload +from koerce import Annotable, Deferred, Var, deferrable + import ibis.expr.builders as bl import ibis.expr.datatypes as dt import ibis.expr.operations as ops @@ -18,10 +20,8 @@ import ibis.expr.types as ir from ibis import selectors, util from ibis.backends import BaseBackend, connect -from ibis.common.deferred import Deferred, _, deferrable from ibis.common.dispatch import lazy_singledispatch from ibis.common.exceptions import IbisInputError -from ibis.common.grounds import Concrete from ibis.common.temporal import normalize_datetime, normalize_timezone from ibis.expr.decompile import decompile from ibis.expr.schema import Schema @@ -196,7 +196,13 @@ pi = ops.Pi().to_expr() -deferred = _ +class _Variable(Var): + def __repr__(self): + return self.name + + +# reserved variable name for the value being matched +deferred = _ = Deferred(_Variable("_")) """Deferred expression object. Use this object to refer to a previous table expression in a chain of @@ -2063,7 +2069,7 @@ def difference(table: ir.Table, *rest: ir.Table, distinct: bool = True) -> ir.Ta return table.difference(*rest, distinct=distinct) if rest else table -class Watermark(Concrete): +class Watermark(Annotable, immutable=True, hashable=True): time_col: str allowed_delay: ir.IntervalScalar diff --git a/ibis/expr/builders.py b/ibis/expr/builders.py index b409d0ba35bd..ad4095ccb1e6 100644 --- a/ibis/expr/builders.py +++ b/ibis/expr/builders.py @@ -3,16 +3,16 @@ import math from typing import TYPE_CHECKING, Any, Literal, Optional, Union +from koerce import Annotable, Deferred, annotated, attribute, deferrable +from koerce import Builder as Resolver + import ibis import ibis.expr.datatypes as dt import ibis.expr.operations as ops import ibis.expr.rules as rlz import ibis.expr.types as ir from ibis import util -from ibis.common.annotations import annotated, attribute -from ibis.common.deferred import Deferred, Resolver, deferrable from ibis.common.exceptions import IbisInputError -from ibis.common.grounds import Concrete from ibis.common.selectors import Selector # noqa: TCH001 from ibis.common.typing import VarTuple # noqa: TCH001 @@ -20,8 +20,13 @@ from typing_extensions import Self -class Builder(Concrete): - pass +class Builder(Annotable, immutable=True): + def copy(self, **overrides) -> Self: + kwargs = dict(zip(self.__argnames__, self.__args__)) + if unknown_args := overrides.keys() - kwargs.keys(): + raise AttributeError(f"Unexpected arguments: {unknown_args}") + kwargs.update(overrides) + return self.__class__(**kwargs) @deferrable(repr="") diff --git a/ibis/expr/datashape.py b/ibis/expr/datashape.py index cc173fa67be1..5e254696f8b9 100644 --- a/ibis/expr/datashape.py +++ b/ibis/expr/datashape.py @@ -4,14 +4,13 @@ from public import public -from ibis.common.grounds import Singleton - +# TODO(kszucs): it was a subclass of Singleton @public -class DataShape(Singleton): +class DataShape: ndim: int - SCALAR: Scalar - COLUMNAR: Columnar + SCALAR: Scalar = None + COLUMNAR: Columnar = None def is_scalar(self) -> bool: return self.ndim == 0 @@ -57,13 +56,9 @@ class Tabular(DataShape): # for backward compat -DataShape.SCALAR = Scalar() -DataShape.COLUMNAR = Columnar() -DataShape.TABULAR = Tabular() - -scalar = Scalar() -columnar = Columnar() -tabular = Tabular() +scalar = DataShape.SCALAR = Scalar() +columnar = DataShape.COLUMNAR = Columnar() +tabular = DataShape.TABULAR = Tabular() public(Any=DataShape) diff --git a/ibis/expr/datatypes/core.py b/ibis/expr/datatypes/core.py index f7c4324ceb1a..569e3ad4c0e8 100644 --- a/ibis/expr/datatypes/core.py +++ b/ibis/expr/datatypes/core.py @@ -20,14 +20,13 @@ ) import toolz +from koerce import attribute from public import public from typing_extensions import Self -from ibis.common.annotations import attribute from ibis.common.collections import FrozenOrderedDict, MapSet from ibis.common.dispatch import lazy_singledispatch -from ibis.common.grounds import Concrete, Singleton -from ibis.common.patterns import Coercible, CoercionError +from ibis.common.grounds import Concrete from ibis.common.temporal import IntervalUnit, TimestampUnit @@ -102,7 +101,7 @@ def from_polars(value, nullable=True): @public -class DataType(Concrete, Coercible): +class DataType(Concrete): """Base class for all data types. Instances are immutable. @@ -136,7 +135,7 @@ def __coerce__(cls, value, **kwargs): try: return dtype(value) except (TypeError, RuntimeError) as e: - raise CoercionError("Unable to coerce to a DataType") from e + raise ValueError("Unable to coerce to a DataType") from e def __call__(self, **kwargs): return self.copy(**kwargs) @@ -463,7 +462,7 @@ def is_variadic(self) -> bool: @public -class Unknown(DataType, Singleton): +class Unknown(DataType, singleton=True): """An unknown type.""" scalar = "UnknownScalar" @@ -471,7 +470,7 @@ class Unknown(DataType, Singleton): @public -class Primitive(DataType, Singleton): +class Primitive(DataType, singleton=True): """Values with known size.""" @@ -532,7 +531,7 @@ def nbytes(self) -> int: @public -class String(Variadic, Singleton): +class String(Variadic, singleton=True): """A type representing a string. Notes @@ -547,7 +546,7 @@ class String(Variadic, Singleton): @public -class Binary(Variadic, Singleton): +class Binary(Variadic, singleton=True): """A type representing a sequence of bytes. Notes diff --git a/ibis/expr/datatypes/tests/test_core.py b/ibis/expr/datatypes/tests/test_core.py index 5caa7b2946b1..a17b94640c03 100644 --- a/ibis/expr/datatypes/tests/test_core.py +++ b/ibis/expr/datatypes/tests/test_core.py @@ -7,11 +7,11 @@ from typing import Annotated, NamedTuple import pytest +from koerce import As, MatchError, Object, Pattern from pytest import param import ibis.expr.datatypes as dt -from ibis.common.annotations import ValidationError -from ibis.common.patterns import As, Attrs, NoMatch, Pattern +from ibis.common.grounds import ValidationError from ibis.common.temporal import TimestampUnit, TimeUnit from ibis.util import get_subclasses @@ -432,8 +432,12 @@ def test_struct_equality(): assert st3 != st2 -def test_singleton_null(): +def test_singleton_datatypes(): assert dt.null is dt.Null() + assert dt.unknown is dt.Unknown() + assert dt.boolean is dt.Boolean() + assert dt.string is dt.String() + assert dt.binary is dt.Binary() def test_singleton_boolean(): @@ -636,48 +640,59 @@ def test_set_is_an_alias_of_array(): def test_type_coercion(): - p = Pattern.from_typehint(dt.DataType) - assert p.match(dt.int8, {}) == dt.int8 - assert p.match("int8", {}) == dt.int8 - assert p.match(dt.string, {}) == dt.string - assert p.match("string", {}) == dt.string - assert p.match(3, {}) is NoMatch - - p = Pattern.from_typehint(dt.Primitive) - assert p.match(dt.int8, {}) == dt.int8 - assert p.match("int8", {}) == dt.int8 - assert p.match(dt.boolean, {}) == dt.boolean - assert p.match("boolean", {}) == dt.boolean - assert p.match(dt.Array(dt.int8), {}) is NoMatch - assert p.match("array", {}) is NoMatch - - p = Pattern.from_typehint(dt.Integer) - assert p.match(dt.int8, {}) == dt.int8 - assert p.match("int8", {}) == dt.int8 - assert p.match(dt.uint8, {}) == dt.uint8 - assert p.match("uint8", {}) == dt.uint8 - assert p.match(dt.boolean, {}) is NoMatch - assert p.match("boolean", {}) is NoMatch - - p = Pattern.from_typehint(dt.Array[dt.Integer]) - assert p.match(dt.Array(dt.int8), {}) == dt.Array(dt.int8) - assert p.match("array", {}) == dt.Array(dt.int8) - assert p.match(dt.Array(dt.uint8), {}) == dt.Array(dt.uint8) - assert p.match("array", {}) == dt.Array(dt.uint8) - assert p.match(dt.Array(dt.boolean), {}) is NoMatch - assert p.match("array", {}) is NoMatch - - p = Pattern.from_typehint(dt.Map[dt.String, dt.Integer]) - assert p.match(dt.Map(dt.string, dt.int8), {}) == dt.Map(dt.string, dt.int8) - assert p.match("map", {}) == dt.Map(dt.string, dt.int8) - assert p.match(dt.Map(dt.string, dt.uint8), {}) == dt.Map(dt.string, dt.uint8) - assert p.match("map", {}) == dt.Map(dt.string, dt.uint8) - assert p.match(dt.Map(dt.string, dt.boolean), {}) is NoMatch - assert p.match("map", {}) is NoMatch - - p = Pattern.from_typehint(Annotated[dt.Interval, Attrs(unit=As(TimeUnit))]) - assert p.match(dt.Interval("s"), {}) == dt.Interval("s") - assert p.match(dt.Interval("ns"), {}) == dt.Interval("ns") + p = Pattern.from_typehint(As[dt.DataType]) + assert p.apply(dt.int8, {}) == dt.int8 + assert p.apply("int8", {}) == dt.int8 + assert p.apply(dt.string, {}) == dt.string + assert p.apply("string", {}) == dt.string + with pytest.raises(MatchError): + p.apply(3) + + p = Pattern.from_typehint(As[dt.Primitive]) + assert p.apply(dt.int8, {}) == dt.int8 + assert p.apply("int8", {}) == dt.int8 + assert p.apply(dt.boolean, {}) == dt.boolean + assert p.apply("boolean", {}) == dt.boolean + with pytest.raises(MatchError): + p.apply(dt.Array(dt.int8)) + with pytest.raises(MatchError): + p.apply("array") + + p = Pattern.from_typehint(As[dt.Integer]) + assert p.apply(dt.int8, {}) == dt.int8 + assert p.apply("int8", {}) == dt.int8 + assert p.apply(dt.uint8, {}) == dt.uint8 + assert p.apply("uint8", {}) == dt.uint8 + with pytest.raises(MatchError): + p.apply(dt.boolean) + with pytest.raises(MatchError): + p.apply("boolean") + + p = Pattern.from_typehint(As[dt.Array[dt.Integer]]) + assert p.apply(dt.Array(dt.int8), {}) == dt.Array(dt.int8) + assert p.apply("array", {}) == dt.Array(dt.int8) + assert p.apply(dt.Array(dt.uint8), {}) == dt.Array(dt.uint8) + assert p.apply("array", {}) == dt.Array(dt.uint8) + with pytest.raises(MatchError): + p.apply(dt.Array(dt.boolean)) + with pytest.raises(MatchError): + p.apply("array") + + p = Pattern.from_typehint(As[dt.Map[dt.String, dt.Integer]]) + assert p.apply(dt.Map(dt.string, dt.int8), {}) == dt.Map(dt.string, dt.int8) + assert p.apply("map", {}) == dt.Map(dt.string, dt.int8) + assert p.apply(dt.Map(dt.string, dt.uint8), {}) == dt.Map(dt.string, dt.uint8) + assert p.apply("map", {}) == dt.Map(dt.string, dt.uint8) + with pytest.raises(MatchError): + p.apply(dt.Map(dt.string, dt.boolean)) + with pytest.raises(MatchError): + p.apply("map") + + p = Pattern.from_typehint( + As[Annotated[dt.Interval, Object(dt.Interval, unit=As(TimeUnit))]] + ) + assert p.apply(dt.Interval("s"), {}) == dt.Interval("s") + assert p.apply(dt.Interval("ns"), {}) == dt.Interval("ns") @pytest.mark.parametrize( diff --git a/ibis/expr/datatypes/tests/test_parse.py b/ibis/expr/datatypes/tests/test_parse.py index b020f96d4ca3..1b20ef961395 100644 --- a/ibis/expr/datatypes/tests/test_parse.py +++ b/ibis/expr/datatypes/tests/test_parse.py @@ -9,7 +9,7 @@ import ibis.expr.datatypes as dt import ibis.tests.strategies as its -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError @pytest.mark.parametrize( diff --git a/ibis/expr/operations/__init__.py b/ibis/expr/operations/__init__.py index ba89a1d4d2d4..77765ebb9e04 100644 --- a/ibis/expr/operations/__init__.py +++ b/ibis/expr/operations/__init__.py @@ -1,23 +1,24 @@ from __future__ import annotations -from ibis.expr.operations.analytic import * # noqa: F403 -from ibis.expr.operations.arrays import * # noqa: F403 -from ibis.expr.operations.core import * # noqa: F403 -from ibis.expr.operations.generic import * # noqa: F403 -from ibis.expr.operations.geospatial import * # noqa: F403 -from ibis.expr.operations.histograms import * # noqa: F403 -from ibis.expr.operations.json import * # noqa: F403 -from ibis.expr.operations.logical import * # noqa: F403 -from ibis.expr.operations.maps import * # noqa: F403 -from ibis.expr.operations.numeric import * # noqa: F403 -from ibis.expr.operations.reductions import * # noqa: F403 -from ibis.expr.operations.relations import * # noqa: F403 -from ibis.expr.operations.sortkeys import * # noqa: F403 -from ibis.expr.operations.strings import * # noqa: F403 -from ibis.expr.operations.structs import * # noqa: F403 -from ibis.expr.operations.subqueries import * # noqa: F403 -from ibis.expr.operations.temporal import * # noqa: F403 -from ibis.expr.operations.temporal_windows import * # noqa: F403 -from ibis.expr.operations.udf import * # noqa: F403 -from ibis.expr.operations.vectorized import * # noqa: F403 -from ibis.expr.operations.window import * # noqa: F403 +# ruff: noqa: I001, F403 +from ibis.expr.operations.analytic import * +from ibis.expr.operations.arrays import * +from ibis.expr.operations.core import * +from ibis.expr.operations.generic import * +from ibis.expr.operations.geospatial import * +from ibis.expr.operations.histograms import * +from ibis.expr.operations.json import * +from ibis.expr.operations.logical import * +from ibis.expr.operations.numeric import * +from ibis.expr.operations.reductions import * +from ibis.expr.operations.relations import * +from ibis.expr.operations.sortkeys import * +from ibis.expr.operations.strings import * +from ibis.expr.operations.structs import * +from ibis.expr.operations.subqueries import * +from ibis.expr.operations.temporal import * +from ibis.expr.operations.temporal_windows import * +from ibis.expr.operations.udf import * +from ibis.expr.operations.vectorized import * +from ibis.expr.operations.window import * +from ibis.expr.operations.maps import * diff --git a/ibis/expr/operations/arrays.py b/ibis/expr/operations/arrays.py index 191cfff526cd..7d40c50e6ca5 100644 --- a/ibis/expr/operations/arrays.py +++ b/ibis/expr/operations/arrays.py @@ -4,12 +4,12 @@ from typing import Optional +from koerce import attribute from public import public import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Unary, Value diff --git a/ibis/expr/operations/core.py b/ibis/expr/operations/core.py index 98d5a3c3c116..65cbab19060e 100644 --- a/ibis/expr/operations/core.py +++ b/ibis/expr/operations/core.py @@ -3,22 +3,20 @@ from abc import abstractmethod from typing import Generic, Optional +from koerce import attribute from public import public from typing_extensions import Any, Self, TypeVar import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute -from ibis.common.graph import Node as Traversable -from ibis.common.grounds import Concrete -from ibis.common.patterns import Coercible, CoercionError +from ibis.common.graph import Node as GraphNode from ibis.common.typing import DefaultTypeVars from ibis.util import is_iterable @public -class Node(Concrete, Traversable): +class Node(GraphNode): def equals(self, other) -> bool: if not isinstance(other, Node): raise TypeError( @@ -29,18 +27,13 @@ def equals(self, other) -> bool: # Avoid custom repr for performance reasons __repr__ = object.__repr__ - # TODO(kszucs): hidrate the __children__ traversable attribute - # @attribute - # def __children__(self): - # return super().__children__ - T = TypeVar("T", bound=dt.DataType, covariant=True) S = TypeVar("S", bound=ds.DataShape, default=ds.Any, covariant=True) @public -class Value(Node, Coercible, DefaultTypeVars, Generic[T, S]): +class Value(Node, DefaultTypeVars, Generic[T, S]): @classmethod def __coerce__( cls, value: Any, T: Optional[type] = None, S: Optional[type] = None @@ -74,7 +67,7 @@ def __coerce__( try: return Literal(value, dtype=dtype) except TypeError: - raise CoercionError(f"Unable to coerce {value!r} to Value[{T!r}]") + raise ValueError(f"Unable to coerce {value!r} to Value[{T!r}]") # TODO(kszucs): cover it with tests # TODO(kszucs): figure out how to represent not named arguments diff --git a/ibis/expr/operations/generic.py b/ibis/expr/operations/generic.py index 0efabf047307..d461f129fa30 100644 --- a/ibis/expr/operations/generic.py +++ b/ibis/expr/operations/generic.py @@ -6,16 +6,14 @@ from typing import Annotated, Any, Optional from typing import Literal as LiteralType +from koerce import Is, Length, attribute from public import public from typing_extensions import TypeVar import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute from ibis.common.deferred import Deferred # noqa: TCH001 -from ibis.common.grounds import Singleton -from ibis.common.patterns import InstanceOf, Length # noqa: TCH001 from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Scalar, Unary, Value from ibis.expr.operations.relations import Relation # noqa: TCH001 @@ -137,7 +135,7 @@ class Least(Value): class Literal(Scalar[T]): """A constant value.""" - value: Annotated[Any, ~InstanceOf(Deferred)] + value: Annotated[Any, ~Is(Deferred)] dtype: T shape = ds.scalar @@ -177,7 +175,7 @@ def name(self): @public -class Constant(Scalar, Singleton): +class Constant(Scalar, singleton=True): """A function that produces a constant.""" shape = ds.scalar diff --git a/ibis/expr/operations/histograms.py b/ibis/expr/operations/histograms.py index 0f2ae705a9ce..b1a7a3daa268 100644 --- a/ibis/expr/operations/histograms.py +++ b/ibis/expr/operations/histograms.py @@ -5,11 +5,11 @@ import numbers # noqa: TCH003 from typing import Literal +from koerce import attribute from public import public import ibis.expr.datashape as ds import ibis.expr.datatypes as dt -from ibis.common.annotations import ValidationError, attribute from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Column, Value @@ -33,10 +33,10 @@ def dtype(self): def __init__(self, buckets, include_under, include_over, **kwargs): if not buckets: - raise ValidationError("Must be at least one bucket edge") + raise ValueError("Must be at least one bucket edge") elif len(buckets) == 1: if not include_under or not include_over: - raise ValidationError( + raise ValueError( "If one bucket edge provided, must have " "include_under=True and include_over=True" ) diff --git a/ibis/expr/operations/json.py b/ibis/expr/operations/json.py index 0f009af51b13..692930f4bb96 100644 --- a/ibis/expr/operations/json.py +++ b/ibis/expr/operations/json.py @@ -2,11 +2,11 @@ from __future__ import annotations +from koerce import attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute from ibis.expr.operations import Value diff --git a/ibis/expr/operations/logical.py b/ibis/expr/operations/logical.py index bc033f66318e..e89a74b9abad 100644 --- a/ibis/expr/operations/logical.py +++ b/ibis/expr/operations/logical.py @@ -2,11 +2,11 @@ from __future__ import annotations +from koerce import attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import ValidationError, attribute from ibis.common.exceptions import IbisTypeError from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Binary, Unary, Value @@ -120,12 +120,12 @@ class Between(Value): def __init__(self, arg, lower_bound, upper_bound): if not rlz.comparable(arg, lower_bound): - raise ValidationError( + raise ValueError( f"Arguments {rlz.arg_type_error_format(arg)} and " f"{rlz.arg_type_error_format(lower_bound)} are not comparable" ) if not rlz.comparable(arg, upper_bound): - raise ValidationError( + raise ValueError( f"Arguments {rlz.arg_type_error_format(arg)} and " f"{rlz.arg_type_error_format(upper_bound)} are not comparable" ) diff --git a/ibis/expr/operations/maps.py b/ibis/expr/operations/maps.py index 8ebdb4986003..c5ca6f5f567e 100644 --- a/ibis/expr/operations/maps.py +++ b/ibis/expr/operations/maps.py @@ -2,11 +2,11 @@ from __future__ import annotations +from koerce import attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute from ibis.expr.operations.core import Unary, Value diff --git a/ibis/expr/operations/numeric.py b/ibis/expr/operations/numeric.py index 2f4c90a55605..e879e8a93adc 100644 --- a/ibis/expr/operations/numeric.py +++ b/ibis/expr/operations/numeric.py @@ -5,12 +5,12 @@ import operator from typing import Optional +from koerce import attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.rules as rlz from ibis import util -from ibis.common.annotations import attribute from ibis.expr.operations.core import Binary, Unary, Value Integer = Value[dt.Integer] diff --git a/ibis/expr/operations/reductions.py b/ibis/expr/operations/reductions.py index a01413ac546f..fbc9050719d6 100644 --- a/ibis/expr/operations/reductions.py +++ b/ibis/expr/operations/reductions.py @@ -4,12 +4,12 @@ from typing import Literal, Optional +from koerce import attribute from public import public import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import ValidationError, attribute from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Column, Value from ibis.expr.operations.relations import Relation # noqa: TCH001 @@ -380,7 +380,7 @@ class ArrayCollect(Filterable, Reduction): def __init__(self, arg, order_by, distinct, **kwargs): if distinct and order_by and [arg] != [key.expr for key in order_by]: - raise ValidationError( + raise ValueError( "`collect` with `order_by` and `distinct=True` and may only " "order by the collected column" ) diff --git a/ibis/expr/operations/relations.py b/ibis/expr/operations/relations.py index b4e8a85d301f..44e7a20bdc10 100644 --- a/ibis/expr/operations/relations.py +++ b/ibis/expr/operations/relations.py @@ -7,11 +7,11 @@ from abc import abstractmethod from typing import Annotated, Any, Literal, Optional, TypeVar +from koerce import Is, attribute from public import public import ibis.expr.datashape as ds import ibis.expr.datatypes as dt -from ibis.common.annotations import attribute from ibis.common.collections import ( ConflictingValuesError, FrozenDict, @@ -19,21 +19,20 @@ ) from ibis.common.exceptions import IbisTypeError, IntegrityError, RelationError from ibis.common.grounds import Concrete -from ibis.common.patterns import Between, InstanceOf -from ibis.common.typing import Coercible, VarTuple +from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Alias, Column, Node, Scalar, Value from ibis.expr.operations.sortkeys import SortKey from ibis.expr.schema import Schema from ibis.formats import TableProxy # noqa: TCH001 -T = TypeVar("T") +T = TypeVar("T", covariant=True) -Unaliased = Annotated[T, ~InstanceOf(Alias)] -NonSortKey = Annotated[T, ~InstanceOf(SortKey)] +Unaliased = Annotated[T, ~Is(Alias)] +NonSortKey = Annotated[T, ~Is(SortKey)] @public -class Relation(Node, Coercible): +class Relation(Node): """Base class for relational operations.""" @classmethod @@ -379,6 +378,8 @@ class Difference(Set): class PhysicalTable(Relation): """Base class for tables with a name.""" + __slots__ = ("__weakref__",) + name: str values = FrozenOrderedDict() @@ -456,7 +457,7 @@ class SQLStringView(Relation): class DummyTable(Relation): """A table constructed from literal values.""" - values: FrozenOrderedDict[str, Annotated[Value, ~InstanceOf(Alias)]] + values: FrozenOrderedDict[str, Annotated[Value, ~Is(Alias)]] @attribute def schema(self): @@ -482,7 +483,7 @@ class DropNull(Simple): class Sample(Simple): """Sample performs random sampling of records in a table.""" - fraction: Annotated[float, Between(0, 1)] + fraction: float # TODO(kszucs) Annotated[float, Between(0, 1)] method: typing.Literal["row", "block"] seed: typing.Union[int, None] = None diff --git a/ibis/expr/operations/strings.py b/ibis/expr/operations/strings.py index dce4ec9d5599..85750c79a2c2 100644 --- a/ibis/expr/operations/strings.py +++ b/ibis/expr/operations/strings.py @@ -4,11 +4,11 @@ from typing import Optional +from koerce import attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Unary, Value diff --git a/ibis/expr/operations/structs.py b/ibis/expr/operations/structs.py index 5b24f2aeb911..9c8c07185ef6 100644 --- a/ibis/expr/operations/structs.py +++ b/ibis/expr/operations/structs.py @@ -2,11 +2,11 @@ from __future__ import annotations +from koerce import attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import ValidationError, attribute from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.core import Value @@ -42,7 +42,7 @@ class StructColumn(Value): def __init__(self, names, values): if len(names) != len(values): - raise ValidationError( + raise ValueError( f"Length of names ({len(names)}) does not match length of " f"values ({len(values)})" ) diff --git a/ibis/expr/operations/subqueries.py b/ibis/expr/operations/subqueries.py index 40d5f47ce66e..2a06a0763e8e 100644 --- a/ibis/expr/operations/subqueries.py +++ b/ibis/expr/operations/subqueries.py @@ -2,12 +2,12 @@ from __future__ import annotations +from koerce import attribute from public import public import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute from ibis.common.exceptions import IntegrityError from ibis.expr.operations.core import Value from ibis.expr.operations.relations import Relation # noqa: TCH001 diff --git a/ibis/expr/operations/temporal.py b/ibis/expr/operations/temporal.py index fa17d6f7c14f..57d4f87ce52a 100644 --- a/ibis/expr/operations/temporal.py +++ b/ibis/expr/operations/temporal.py @@ -5,12 +5,11 @@ import operator from typing import Annotated, Optional +from koerce import As, Object, attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.annotations import attribute -from ibis.common.patterns import As, Attrs from ibis.common.temporal import DateUnit, IntervalUnit, TimestampUnit, TimeUnit from ibis.expr.operations.core import Binary, Scalar, Unary, Value from ibis.expr.operations.logical import Between @@ -263,8 +262,8 @@ class TimestampFromUNIX(Value): shape = rlz.shape_like("arg") -TimeInterval = Annotated[dt.Interval, Attrs(unit=As(TimeUnit))] -DateInterval = Annotated[dt.Interval, Attrs(unit=As(DateUnit))] +TimeInterval = Annotated[dt.Interval, Object(dt.Interval, unit=As(TimeUnit))] +DateInterval = Annotated[dt.Interval, Object(dt.Interval, unit=As(DateUnit))] @public diff --git a/ibis/expr/operations/temporal_windows.py b/ibis/expr/operations/temporal_windows.py index ab7b8632f176..5c2b3c3d0b1d 100644 --- a/ibis/expr/operations/temporal_windows.py +++ b/ibis/expr/operations/temporal_windows.py @@ -4,10 +4,10 @@ from typing import Literal, Optional +from koerce import attribute from public import public import ibis.expr.datatypes as dt -from ibis.common.annotations import attribute from ibis.common.collections import FrozenOrderedDict from ibis.expr.operations.core import Column, Scalar # noqa: TCH001 from ibis.expr.operations.relations import Relation, Unaliased diff --git a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call0-missing_a_required_argument/missing_a_required_argument.txt b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call0-missing_a_required_argument/missing_a_required_argument.txt index 82b70db10e11..038dca5f70e7 100644 --- a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call0-missing_a_required_argument/missing_a_required_argument.txt +++ b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call0-missing_a_required_argument/missing_a_required_argument.txt @@ -1,3 +1 @@ -Literal(1) missing a required argument: 'dtype' - -Expected signature: Literal(value: Annotated[Any, Not(pattern=InstanceOf(type=))], dtype: DataType) \ No newline at end of file +missing a required argument: 'dtype' \ No newline at end of file diff --git a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call1-too_many_positional_arguments/too_many_positional_arguments.txt b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call1-too_many_positional_arguments/too_many_positional_arguments.txt index 5336bc197fbf..8bca81ebfa83 100644 --- a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call1-too_many_positional_arguments/too_many_positional_arguments.txt +++ b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call1-too_many_positional_arguments/too_many_positional_arguments.txt @@ -1,3 +1 @@ -Literal(1, Int8(nullable=True), 'foo') too many positional arguments - -Expected signature: Literal(value: Annotated[Any, Not(pattern=InstanceOf(type=))], dtype: DataType) \ No newline at end of file +too many positional arguments \ No newline at end of file diff --git a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call2-got_an_unexpected_keyword/got_an_unexpected_keyword.txt b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call2-got_an_unexpected_keyword/got_an_unexpected_keyword.txt index 20cfdafa8a44..0c3899fa4bd6 100644 --- a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call2-got_an_unexpected_keyword/got_an_unexpected_keyword.txt +++ b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call2-got_an_unexpected_keyword/got_an_unexpected_keyword.txt @@ -1,3 +1 @@ -Literal(1, Int8(nullable=True), name='foo') got an unexpected keyword argument 'name' - -Expected signature: Literal(value: Annotated[Any, Not(pattern=InstanceOf(type=))], dtype: DataType) \ No newline at end of file +got an unexpected keyword argument 'name' \ No newline at end of file diff --git a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call3-multiple_values_for_argument/multiple_values_for_argument.txt b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call3-multiple_values_for_argument/multiple_values_for_argument.txt index c2f857abfdc1..82797c4f328d 100644 --- a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call3-multiple_values_for_argument/multiple_values_for_argument.txt +++ b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call3-multiple_values_for_argument/multiple_values_for_argument.txt @@ -1,3 +1 @@ -Literal(1, Int8(nullable=True), dtype=Int16(nullable=True)) multiple values for argument 'dtype' - -Expected signature: Literal(value: Annotated[Any, Not(pattern=InstanceOf(type=))], dtype: DataType) \ No newline at end of file +multiple values for argument 'dtype' \ No newline at end of file diff --git a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call4-invalid_dtype/invalid_dtype.txt b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call4-invalid_dtype/invalid_dtype.txt index 68755d5f9c55..57f9b10ae0a4 100644 --- a/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call4-invalid_dtype/invalid_dtype.txt +++ b/ibis/expr/operations/tests/snapshots/test_generic/test_error_message_when_constructing_literal/call4-invalid_dtype/invalid_dtype.txt @@ -1,4 +1 @@ -Literal(1, 4) has failed due to the following errors: - `dtype`: 4 is not coercible to a DataType - -Expected signature: Literal(value: Annotated[Any, Not(pattern=InstanceOf(type=))], dtype: DataType) \ No newline at end of file +`4` cannot be coerced to \ No newline at end of file diff --git a/ibis/expr/operations/tests/test_core.py b/ibis/expr/operations/tests/test_core.py index 4700a52b83ca..a63d1445f974 100644 --- a/ibis/expr/operations/tests/test_core.py +++ b/ibis/expr/operations/tests/test_core.py @@ -3,6 +3,7 @@ from typing import Optional import pytest +from koerce import Eq import ibis import ibis.expr.datashape as ds @@ -10,8 +11,7 @@ import ibis.expr.operations as ops import ibis.expr.rules as rlz import ibis.expr.types as ir -from ibis.common.annotations import ValidationError -from ibis.common.patterns import EqualTo +from ibis.common.grounds import ValidationError t = ibis.table([("a", "int64")], name="t") @@ -96,8 +96,8 @@ class Aliased(Base): ketto = Aliased(one, "ketto") - first_rule = EqualTo(Name("one")) >> Name("zero") - second_rule = EqualTo(two) >> ketto + first_rule = Eq(Name("one")) >> Name("zero") + second_rule = Eq(two) >> ketto new_values = values.replace(first_rule | second_rule) expected = Values((NamedValue(value=1, name=Name("zero")), ketto, three)) diff --git a/ibis/expr/operations/tests/test_generic.py b/ibis/expr/operations/tests/test_generic.py index febc892d6fc5..d65cb8f5288f 100644 --- a/ibis/expr/operations/tests/test_generic.py +++ b/ibis/expr/operations/tests/test_generic.py @@ -4,12 +4,12 @@ from typing import Union import pytest +from koerce import MatchError, Pattern import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.operations as ops -from ibis.common.annotations import ValidationError -from ibis.common.patterns import NoMatch, Pattern +from ibis.common.grounds import ValidationError one = ops.Literal(1, dt.int8) @@ -38,15 +38,20 @@ def test_literal_coercion_type_inference(value, dtype): (ops.Literal, False, ops.Literal(False, dt.boolean)), (ops.Literal[dt.Int8], 1, one), (ops.Literal[dt.Int16], 1, ops.Literal(1, dt.int16)), - (ops.Literal[dt.Int8], ops.Literal(1, dt.int16), NoMatch), (ops.Literal[dt.Integer], 1, ops.Literal(1, dt.int8)), (ops.Literal[dt.Floating], 1, ops.Literal(1, dt.float64)), (ops.Literal[dt.Float32], 1.0, ops.Literal(1.0, dt.float32)), ], ) def test_coerced_to_literal(typehint, value, expected): - pat = Pattern.from_typehint(typehint) - assert pat.match(value, {}) == expected + pat = Pattern.from_typehint(typehint, allow_coercion=True) + assert pat.apply(value) == expected + + +def test_coerced_to_literal_failing(): + pat = Pattern.from_typehint(ops.Literal[dt.Int8], allow_coercion=True) + with pytest.raises(MatchError): + pat.apply(ops.Literal(1, dt.int16)) @pytest.mark.parametrize( @@ -56,7 +61,6 @@ def test_coerced_to_literal(typehint, value, expected): (ops.Value[dt.Int8], 1, one), (ops.Value[dt.Int8, ds.Any], 1, one), (ops.Value[dt.Int8, ds.Scalar], 1, one), - (ops.Value[dt.Int8, ds.Columnar], 1, NoMatch), # dt.Integer is not instantiable so it will be only used for checking # that the produced literal has any integer datatype (ops.Value[dt.Integer], 1, one), @@ -76,7 +80,6 @@ def test_coerced_to_literal(typehint, value, expected): 128, ops.Literal(128, dt.int16), ), - (ops.Value[dt.Int8], 128, NoMatch), # this is actually supported by creating an explicit dtype # in Value.__coerce__ based on the `T` keyword argument (ops.Value[dt.Int16, ds.Scalar], 1, ops.Literal(1, dt.int16)), @@ -89,19 +92,29 @@ def test_coerced_to_literal(typehint, value, expected): ], ) def test_coerced_to_value(typehint, value, expected): - pat = Pattern.from_typehint(typehint) - assert pat.match(value, {}) == expected + pat = Pattern.from_typehint(typehint, allow_coercion=True) + assert pat.apply(value) == expected + + +def test_coerced_to_value_failing(): + pat = Pattern.from_typehint(ops.Value[dt.Int8, ds.Columnar], allow_coercion=True) + with pytest.raises(MatchError): + pat.apply(1) + + pat = Pattern.from_typehint(ops.Value[dt.Int8], allow_coercion=True) + with pytest.raises(MatchError): + pat.apply(128) def test_coerced_to_interval_value(): pd = pytest.importorskip("pandas") expected = ops.Literal(1, dt.Interval("s")) - pat = Pattern.from_typehint(ops.Value[dt.Interval]) - assert pat.match(pd.Timedelta("1s"), {}) == expected + pat = Pattern.from_typehint(ops.Value[dt.Interval], allow_coercion=True) + assert pat.apply(pd.Timedelta("1s")) == expected expected = ops.Literal(3661, dt.Interval("s")) - assert pat.match(pd.Timedelta("1h 1m 1s"), {}) == expected + assert pat.apply(pd.Timedelta("1h 1m 1s")) == expected @pytest.mark.parametrize( diff --git a/ibis/expr/operations/tests/test_rewrites.py b/ibis/expr/operations/tests/test_rewrites.py index 4cb6752a17d1..6681531c1427 100644 --- a/ibis/expr/operations/tests/test_rewrites.py +++ b/ibis/expr/operations/tests/test_rewrites.py @@ -1,110 +1,110 @@ -from __future__ import annotations - -import pytest - -import ibis -import ibis.expr.datatypes as dt -import ibis.expr.operations as ops -from ibis.common.deferred import _, const, deferred, var -from ibis.common.patterns import AnyOf, Check, pattern, replace -from ibis.util import Namespace - -p = Namespace(pattern, module=ops) -d = Namespace(deferred, module=ops) - -x = var("x") -y = var("y") -z = var("z") -params = var("params") - -zero = ibis.literal(0) -one = ibis.literal(1) -two = ibis.literal(2) -three = ibis.literal(3) -add_1_2 = one + two - -param_a = ibis.param("int8") -param_b = ibis.param("int8") -param_values = {param_a.op(): 1, param_b.op(): 2} - -get_literal_value = p.Literal >> _.value -inc_integer_literal = p.Literal(x, dtype=dt.Integer) >> _.copy(value=x + 1) -sub_param_from_const = p.ScalarParameter >> d.Literal( - const(param_values)[_], dtype=_.dtype -) - - -@replace(p.Add(p.Literal(x), p.Literal(y))) -def fold_literal_add(_, x, y): - return ibis.literal(x + y).op() - - -simplifications = AnyOf( - p.Add(x, p.Literal(0)) >> x, - p.Add(p.Literal(0), x) >> x, - p.Subtract(x, p.Literal(0)) >> x, - p.Multiply(x, p.Literal(1)) >> x, - p.Multiply(p.Literal(1), x) >> x, - p.Multiply(x, p.Literal(0)) >> zero.op(), - p.Multiply(p.Literal(0), x) >> zero.op(), - p.Divide(x, p.Literal(1)) >> x, - p.Divide(p.Literal(0), x) >> zero.op(), - p.Divide(x, y) & Check(x == y) >> one.op(), - fold_literal_add, -) - - -@replace(p.Literal(value=x, dtype=y)) -def literal_to_type_call(_, x, y): - return f"{y}({x})" - - -@pytest.mark.parametrize( - ("rule", "expr", "expected"), - [ - (get_literal_value, one, 1), - (get_literal_value, two, 2), - (literal_to_type_call, one, "int8(1)"), - (inc_integer_literal, one, two.op()), - (sub_param_from_const, param_a + param_b, add_1_2.op()), - ], -) -def test_replace_scalar_parameters(rule, expr, expected): - assert expr.op().replace(rule) == expected - - -def test_replace_scalar_parameters_using_variable(): - expr = param_a + param_b - context = {"params": param_values} - sub_param_from_var = p.ScalarParameter(x) >> d.Literal(params[_], dtype=x) - assert expr.op().replace(sub_param_from_var, context=context) == add_1_2.op() - - -def test_replace_propagation(): - expr = add_1_2 + add_1_2 + add_1_2 - rule = p.Add(p.Add(x, y), z) >> d.Subtract(d.Subtract(x, y), z) - result = expr.op().replace(rule) - expected = ((one - two) - add_1_2) + add_1_2 - assert result == expected.op() - - -@pytest.mark.parametrize( - ("expr", "expected"), - [ - (one + zero, one), - (zero + one, one), - (one - zero, one), - (one * zero, zero), - (zero * one, zero), - ((one + one + one) * one, three), - (one / one, one), - (one / one / one, one), - (one / (one / one), one), - (one / (one / one) / one, one), - (three / (one / one) / one, three), - (three / three, one), - ], -) -def test_simplification(expr, expected): - result = expr.op().replace(simplifications) - assert result == expected.op() +# from __future__ import annotations + +# import pytest + +# import ibis +# import ibis.expr.datatypes as dt +# import ibis.expr.operations as ops +# from ibis.common.deferred import _, const, deferred, var +# from ibis.common.patterns import AnyOf, Check, pattern, replace +# from ibis.util import Namespace + +# p = Namespace(pattern, module=ops) +# d = Namespace(deferred, module=ops) + +# x = var("x") +# y = var("y") +# z = var("z") +# params = var("params") + +# zero = ibis.literal(0) +# one = ibis.literal(1) +# two = ibis.literal(2) +# three = ibis.literal(3) +# add_1_2 = one + two + +# param_a = ibis.param("int8") +# param_b = ibis.param("int8") +# param_values = {param_a.op(): 1, param_b.op(): 2} + +# get_literal_value = p.Literal >> _.value +# inc_integer_literal = p.Literal(x, dtype=dt.Integer) >> _.copy(value=x + 1) +# sub_param_from_const = p.ScalarParameter >> d.Literal( +# const(param_values)[_], dtype=_.dtype +# ) + + +# @replace(p.Add(p.Literal(x), p.Literal(y))) +# def fold_literal_add(_, x, y): +# return ibis.literal(x + y).op() + + +# simplifications = AnyOf( +# p.Add(x, p.Literal(0)) >> x, +# p.Add(p.Literal(0), x) >> x, +# p.Subtract(x, p.Literal(0)) >> x, +# p.Multiply(x, p.Literal(1)) >> x, +# p.Multiply(p.Literal(1), x) >> x, +# p.Multiply(x, p.Literal(0)) >> zero.op(), +# p.Multiply(p.Literal(0), x) >> zero.op(), +# p.Divide(x, p.Literal(1)) >> x, +# p.Divide(p.Literal(0), x) >> zero.op(), +# p.Divide(x, y) & Check(x == y) >> one.op(), +# fold_literal_add, +# ) + + +# @replace(p.Literal(value=x, dtype=y)) +# def literal_to_type_call(_, x, y): +# return f"{y}({x})" + + +# @pytest.mark.parametrize( +# ("rule", "expr", "expected"), +# [ +# (get_literal_value, one, 1), +# (get_literal_value, two, 2), +# (literal_to_type_call, one, "int8(1)"), +# (inc_integer_literal, one, two.op()), +# (sub_param_from_const, param_a + param_b, add_1_2.op()), +# ], +# ) +# def test_replace_scalar_parameters(rule, expr, expected): +# assert expr.op().replace(rule) == expected + + +# def test_replace_scalar_parameters_using_variable(): +# expr = param_a + param_b +# context = {"params": param_values} +# sub_param_from_var = p.ScalarParameter(x) >> d.Literal(params[_], dtype=x) +# assert expr.op().replace(sub_param_from_var, context=context) == add_1_2.op() + + +# def test_replace_propagation(): +# expr = add_1_2 + add_1_2 + add_1_2 +# rule = p.Add(p.Add(x, y), z) >> d.Subtract(d.Subtract(x, y), z) +# result = expr.op().replace(rule) +# expected = ((one - two) - add_1_2) + add_1_2 +# assert result == expected.op() + + +# @pytest.mark.parametrize( +# ("expr", "expected"), +# [ +# (one + zero, one), +# (zero + one, one), +# (one - zero, one), +# (one * zero, zero), +# (zero * one, zero), +# ((one + one + one) * one, three), +# (one / one, one), +# (one / one / one, one), +# (one / (one / one), one), +# (one / (one / one) / one, one), +# (three / (one / one) / one, three), +# (three / three, one), +# ], +# ) +# def test_simplification(expr, expected): +# result = expr.op().replace(simplifications) +# assert result == expected.op() diff --git a/ibis/expr/operations/tests/test_structs.py b/ibis/expr/operations/tests/test_structs.py index efded74516df..559445d4c64f 100644 --- a/ibis/expr/operations/tests/test_structs.py +++ b/ibis/expr/operations/tests/test_structs.py @@ -6,7 +6,7 @@ import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.operations as ops -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError def test_struct_column_shape(): diff --git a/ibis/expr/operations/udf.py b/ibis/expr/operations/udf.py index ee73dfae8b64..042e325dff1e 100644 --- a/ibis/expr/operations/udf.py +++ b/ibis/expr/operations/udf.py @@ -11,6 +11,7 @@ import typing from typing import TYPE_CHECKING, Any, Optional, TypeVar, overload +from koerce import argument, attribute, deferrable from public import public import ibis.common.exceptions as exc @@ -19,9 +20,7 @@ import ibis.expr.operations as ops import ibis.expr.rules as rlz from ibis import util -from ibis.common.annotations import Argument, attribute from ibis.common.collections import FrozenDict -from ibis.common.deferred import deferrable if TYPE_CHECKING: from collections.abc import Callable, Iterable, MutableMapping @@ -120,7 +119,7 @@ def _make_node( if (return_annotation := annotations.pop("return", None)) is None: raise exc.MissingReturnAnnotationError(fn) fields = { - arg_name: Argument( + arg_name: argument( pattern=rlz.ValueOf(annotations.get(arg_name)), default=param.default, typehint=annotations.get(arg_name, Any), @@ -132,7 +131,7 @@ def _make_node( arg_types, return_annotation = signature arg_names = list(inspect.signature(fn).parameters) fields = { - arg_name: Argument(pattern=rlz.ValueOf(typ), typehint=typ) + arg_name: argument(pattern=rlz.ValueOf(typ), typehint=typ) for arg_name, typ in zip(arg_names, arg_types) } diff --git a/ibis/expr/operations/window.py b/ibis/expr/operations/window.py index 6433f2405a56..953a34473339 100644 --- a/ibis/expr/operations/window.py +++ b/ibis/expr/operations/window.py @@ -12,7 +12,6 @@ import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.rules as rlz -from ibis.common.patterns import CoercionError from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.operations.analytic import Analytic # noqa: TCH001 from ibis.expr.operations.core import Column, Value @@ -60,7 +59,7 @@ def __coerce__(cls, value, **kwargs): elif isinstance(arg, Value): return cls(arg, preceding=False) else: - raise CoercionError(f"Invalid window boundary type: {type(arg)}") + raise ValueError(f"Invalid window boundary type: {type(arg)}") @public diff --git a/ibis/expr/rewrites.py b/ibis/expr/rewrites.py index 3b9d6760ce41..61143338fbfe 100644 --- a/ibis/expr/rewrites.py +++ b/ibis/expr/rewrites.py @@ -5,28 +5,28 @@ from collections import defaultdict import toolz +from koerce import Annotable, If, Item, _, namespace, replace, var import ibis.expr.operations as ops from ibis.common.collections import FrozenDict # noqa: TCH001 -from ibis.common.deferred import Item, _, deferred, var from ibis.common.exceptions import ExpressionError, IbisInputError -from ibis.common.graph import Node as Traversable + +# from ibis.common.graph import Node as Traversable from ibis.common.graph import traverse -from ibis.common.grounds import Concrete -from ibis.common.patterns import Check, pattern, replace -from ibis.common.typing import VarTuple # noqa: TCH001 -from ibis.util import Namespace, promote_list -p = Namespace(pattern, module=ops) -d = Namespace(deferred, module=ops) +# from ibis.common.patterns import Check, pattern, replace +from ibis.common.typing import VarTuple # noqa: TCH001 +from ibis.util import promote_list +p, d = namespace(ops) x = var("x") y = var("y") name = var("name") -class DerefMap(Concrete, Traversable): +# class DerefMap(Concrete, Traversable): +class DerefMap(Annotable, immutable=True, hashable=True): """Trace and replace fields from earlier relations in the hierarchy. In order to provide a nice user experience, we need to allow expressions @@ -335,7 +335,7 @@ def rewrite_window_input(value, window): # TODO(kszucs): schema comparison should be updated to not distinguish between # different column order -@replace(p.Project(y @ p.Relation) & Check(_.schema == y.schema)) +@replace(p.Project(y @ p.Relation) & If(_.schema == y.schema)) def complete_reprojection(_, y): # TODO(kszucs): this could be moved to the pattern itself but not sure how # to express it, especially in a shorter way then the following check @@ -347,25 +347,25 @@ def complete_reprojection(_, y): @replace(p.Project(y @ p.Project)) def subsequent_projects(_, y): - rule = p.Field(y, name) >> Item(y.values, name) + rule = p.Field(y, +name) >> Item(y.values, name) values = {k: v.replace(rule, filter=ops.Value) for k, v in _.values.items()} return ops.Project(y.parent, values) @replace(p.Filter(y @ p.Filter)) def subsequent_filters(_, y): - rule = p.Field(y, name) >> d.Field(y.parent, name) + rule = p.Field(y, +name) >> d.Field(y.parent, name) preds = tuple(v.replace(rule, filter=ops.Value) for v in _.predicates) return ops.Filter(y.parent, y.predicates + preds) @replace(p.Filter(y @ p.Project)) def reorder_filter_project(_, y): - rule = p.Field(y, name) >> Item(y.values, name) + rule = p.Field(y, +name) >> Item(y.values, name) preds = tuple(v.replace(rule, filter=ops.Value) for v in _.predicates) inner = ops.Filter(y.parent, preds) - rule = p.Field(y.parent, name) >> d.Field(inner, name) + rule = p.Field(y.parent, +name) >> d.Field(inner, name) projs = {k: v.replace(rule, filter=ops.Value) for k, v in y.values.items()} return ops.Project(inner, projs) diff --git a/ibis/expr/rules.py b/ibis/expr/rules.py index af1167cb527a..56fb3c775be4 100644 --- a/ibis/expr/rules.py +++ b/ibis/expr/rules.py @@ -3,14 +3,12 @@ from itertools import product, starmap from typing import Optional +from koerce import Annotable, attribute from public import public import ibis.expr.datatypes as dt import ibis.expr.operations as ops from ibis import util -from ibis.common.annotations import attribute -from ibis.common.grounds import Concrete -from ibis.common.patterns import CoercionError, NoMatch, Pattern from ibis.common.temporal import IntervalUnit @@ -138,7 +136,7 @@ def arg_type_error_format(op: ops.Value) -> str: return f"{op.name}:{op.dtype}" -class ValueOf(Concrete, Pattern): +class ValueOf(Annotable, immutable=True): """Match a value of a specific type **instance**. This is different from the Value[T] annotations which construct @@ -154,13 +152,10 @@ class ValueOf(Concrete, Pattern): dtype: Optional[dt.DataType] = None - def match(self, value, context): - try: - value = ops.Value.__coerce__(value, self.dtype) - except CoercionError: - return NoMatch + def __call__(self, value, **ctx): + value = ops.Value.__coerce__(value, self.dtype) if self.dtype and not value.dtype.castable(self.dtype): - return NoMatch + raise ValueError("Expected value implicitly castable to {self.dtype}") return value diff --git a/ibis/expr/schema.py b/ibis/expr/schema.py index b47d13076407..05869a379a09 100644 --- a/ibis/expr/schema.py +++ b/ibis/expr/schema.py @@ -4,13 +4,13 @@ from collections.abc import Iterable, Iterator, Mapping from typing import TYPE_CHECKING, Any, Union +from koerce import attribute + import ibis.expr.datatypes as dt -from ibis.common.annotations import attribute from ibis.common.collections import FrozenOrderedDict, MapSet from ibis.common.dispatch import lazy_singledispatch from ibis.common.exceptions import InputTypeError, IntegrityError from ibis.common.grounds import Concrete -from ibis.common.patterns import Coercible from ibis.util import indent if TYPE_CHECKING: @@ -20,7 +20,7 @@ import sqlglot.expressions as sge -class Schema(Concrete, Coercible, MapSet): +class Schema(Concrete, MapSet): """An ordered mapping of str -> [datatype](./datatypes.qmd), used to hold a [Table](./expression-tables.qmd#ibis.expr.tables.Table)'s schema.""" fields: FrozenOrderedDict[str, dt.DataType] diff --git a/ibis/expr/tests/test_datashape.py b/ibis/expr/tests/test_datashape.py index eb5af285921c..6ebb6ad4b4fb 100644 --- a/ibis/expr/tests/test_datashape.py +++ b/ibis/expr/tests/test_datashape.py @@ -36,13 +36,13 @@ def test_tabular_shape(): assert t.is_tabular() -def test_shapes_are_singletons(): - assert Scalar() is scalar - assert Scalar() is Scalar() - assert Columnar() is columnar - assert Columnar() is Columnar() - assert Tabular() is tabular - assert Tabular() is Tabular() +def test_shapes_eq(): + assert Scalar() == scalar + assert Scalar() == Scalar() + assert Columnar() == columnar + assert Columnar() == Columnar() + assert Tabular() == tabular + assert Tabular() == Tabular() def test_shape_comparison(): diff --git a/ibis/expr/tests/test_format.py b/ibis/expr/tests/test_format.py index 6fe8b3cddf94..96fca184509a 100644 --- a/ibis/expr/tests/test_format.py +++ b/ibis/expr/tests/test_format.py @@ -472,22 +472,11 @@ class ValueList(ops.Node): def test_arbitrary_traversables_are_supported(snapshot): class MyNode(Traversable): - __slots__ = ("obj", "children") - __argnames__ = ("obj", "children") - - def __init__(self, obj, children): - self.obj = obj.op() - self.children = tuple(child.op() for child in children) - - @property - def __args__(self): - return self.obj, self.children - - def __hash__(self): - return hash((self.__class__, self.obj, self.children)) + obj: Traversable + children: tuple[Traversable, ...] t = ibis.table([("a", "int64")], name="t") - node = MyNode(t.a, [t.a, t.a + 1]) + node = MyNode(t.a.op(), [t.a.op(), (t.a + 1).op()]) result = pretty(node) snapshot.assert_match(result, "repr.txt") diff --git a/ibis/expr/tests/test_newrels.py b/ibis/expr/tests/test_newrels.py index 60724c10396f..2cc6d2461666 100644 --- a/ibis/expr/tests/test_newrels.py +++ b/ibis/expr/tests/test_newrels.py @@ -11,8 +11,8 @@ import ibis.expr.types as ir import ibis.selectors as s from ibis import _ -from ibis.common.annotations import ValidationError from ibis.common.exceptions import IbisInputError, IntegrityError +from ibis.common.grounds import ValidationError from ibis.expr.operations import ( Aggregate, Field, diff --git a/ibis/expr/tests/test_reductions.py b/ibis/expr/tests/test_reductions.py index adfcfb95008a..1885dd4cffe1 100644 --- a/ibis/expr/tests/test_reductions.py +++ b/ibis/expr/tests/test_reductions.py @@ -1,14 +1,14 @@ from __future__ import annotations import pytest +from koerce import Deferred, resolve from pytest import param import ibis import ibis.expr.operations as ops from ibis import _ -from ibis.common.annotations import ValidationError -from ibis.common.deferred import Deferred from ibis.common.exceptions import IbisTypeError +from ibis.common.grounds import ValidationError @pytest.mark.parametrize( @@ -107,7 +107,7 @@ def test_reduction_methods(fn, operation, cond): if where is None: assert node.where is None elif isinstance(where, Deferred): - resolved = where.resolve(t).op() + resolved = resolve(where, _=t).op() assert node.where == resolved else: assert node.where == where.op() diff --git a/ibis/expr/tests/test_schema.py b/ibis/expr/tests/test_schema.py index 9fa93be67252..8ccd8c244f6a 100644 --- a/ibis/expr/tests/test_schema.py +++ b/ibis/expr/tests/test_schema.py @@ -4,12 +4,11 @@ from typing import NamedTuple import pytest +from koerce import Annotable import ibis.expr.datatypes as dt import ibis.expr.schema as sch from ibis.common.exceptions import IntegrityError -from ibis.common.grounds import Annotable -from ibis.common.patterns import CoercedTo def test_whole_schema(): @@ -313,8 +312,6 @@ class ObjectWithSchema(Annotable): def test_schema_is_coercible(): s = sch.Schema({"a": dt.int64, "b": dt.Array(dt.int64)}) - assert CoercedTo(sch.Schema).match(PreferenceA, {}) == s - o = ObjectWithSchema(schema=PreferenceA) assert o.schema == s diff --git a/ibis/expr/types/arrays.py b/ibis/expr/types/arrays.py index edb439ec0e30..dbdf04192f4b 100644 --- a/ibis/expr/types/arrays.py +++ b/ibis/expr/types/arrays.py @@ -3,10 +3,10 @@ import inspect from typing import TYPE_CHECKING +from koerce import Deferred, deferrable, resolve from public import public import ibis.expr.operations as ops -from ibis.common.deferred import Deferred, deferrable from ibis.expr.types.generic import Column, Scalar, Value if TYPE_CHECKING: @@ -470,10 +470,8 @@ def map(self, func: Deferred | Callable[[ir.Value], ir.Value]) -> ir.ArrayValue: """ if isinstance(func, Deferred): name = "_" - resolve = func.resolve elif callable(func): name = next(iter(inspect.signature(func).parameters.keys())) - resolve = func else: raise TypeError( f"`func` must be a Deferred or Callable, got `{type(func).__name__}`" @@ -482,7 +480,11 @@ def map(self, func: Deferred | Callable[[ir.Value], ir.Value]) -> ir.ArrayValue: parameter = ops.Argument( name=name, shape=self.op().shape, dtype=self.type().value_type ) - body = resolve(parameter.to_expr()) + if isinstance(func, Deferred): + body = resolve(func, _=parameter.to_expr()) + else: + body = func(parameter.to_expr()) + return ops.ArrayMap(self, param=parameter.param, body=body).to_expr() def filter( @@ -574,20 +576,23 @@ def filter( """ if isinstance(predicate, Deferred): name = "_" - resolve = predicate.resolve elif callable(predicate): name = next(iter(inspect.signature(predicate).parameters.keys())) - resolve = predicate else: raise TypeError( f"`predicate` must be a Deferred or Callable, got `{type(predicate).__name__}`" ) + parameter = ops.Argument( name=name, shape=self.op().shape, dtype=self.type().value_type, ) - body = resolve(parameter.to_expr()) + if isinstance(predicate, Deferred): + body = resolve(predicate, _=parameter.to_expr()) + else: + body = predicate(parameter.to_expr()) + return ops.ArrayFilter(self, param=parameter.param, body=body).to_expr() def contains(self, other: ir.Value) -> ir.BooleanValue: diff --git a/ibis/expr/types/core.py b/ibis/expr/types/core.py index 9c9c380b114e..d67d6bc945bf 100644 --- a/ibis/expr/types/core.py +++ b/ibis/expr/types/core.py @@ -5,14 +5,12 @@ import webbrowser from typing import TYPE_CHECKING, Any, NoReturn +from koerce import Immutable, MatchError from public import public import ibis import ibis.expr.operations as ops -from ibis.common.annotations import ValidationError from ibis.common.exceptions import IbisError, TranslationError -from ibis.common.grounds import Immutable -from ibis.common.patterns import Coercible, CoercionError from ibis.common.typing import get_defining_scope from ibis.config import _default_backend from ibis.config import options as opts @@ -40,11 +38,15 @@ class _FixedTextJupyterMixin: """No-op when rich is not installed.""" + + __slots__ = () else: class _FixedTextJupyterMixin(JupyterMixin): """JupyterMixin adds a spurious newline to text, this fixes the issue.""" + __slots__ = () + def _repr_mimebundle_(self, *args, **kwargs): try: bundle = super()._repr_mimebundle_(*args, **kwargs) @@ -65,7 +67,7 @@ def _capture_rich_renderable(renderable: RenderableType) -> str: @public -class Expr(Immutable, Coercible): +class Expr(Immutable): """Base expression class.""" __slots__ = ("_arg",) @@ -122,6 +124,9 @@ def __init__(self, arg: ops.Node) -> None: def __iter__(self) -> NoReturn: raise TypeError(f"{self.__class__.__name__!r} object is not iterable") + def __setattr__(self, name: str, value: Any) -> NoReturn: + raise AttributeError("Ibis expressions are immutable") + @classmethod def __coerce__(cls, value): if isinstance(value, cls): @@ -129,7 +134,7 @@ def __coerce__(cls, value): elif isinstance(value, ops.Node): return value.to_expr() else: - raise CoercionError("Unable to coerce value to an expression") + raise ValueError("Unable to coerce value to an expression") def __reduce__(self): return (self.__class__, (self._arg,)) @@ -763,7 +768,7 @@ def _binop(op_class: type[ops.Binary], left: ir.Value, right: ir.Value) -> ir.Va """ try: node = op_class(left, right) - except (ValidationError, NotImplementedError): + except (MatchError, NotImplementedError): return NotImplemented else: return node.to_expr() diff --git a/ibis/expr/types/generic.py b/ibis/expr/types/generic.py index 2278d46a6678..669ec25522c3 100644 --- a/ibis/expr/types/generic.py +++ b/ibis/expr/types/generic.py @@ -3,6 +3,7 @@ from collections.abc import Iterable, Sequence from typing import TYPE_CHECKING, Any +from koerce import Deferred, _, deferrable, resolve from public import public import ibis @@ -10,8 +11,6 @@ import ibis.expr.builders as bl import ibis.expr.datatypes as dt import ibis.expr.operations as ops -from ibis.common.deferred import Deferred, _, deferrable -from ibis.common.grounds import Singleton from ibis.expr.rewrites import rewrite_window_input from ibis.expr.types.core import Expr, _binop, _FixedTextJupyterMixin, _is_null_literal from ibis.util import deprecated, promote_list, warn_deprecated @@ -1590,7 +1589,7 @@ def _bind_to_parent_table(self, value) -> Value | None: if isinstance(value, str): return table[value] elif isinstance(value, Deferred): - return value.resolve(table) + return resolve(value, _=table) else: value = value(table) @@ -2485,7 +2484,7 @@ class NullValue(Value): @public -class NullScalar(Scalar, NullValue, Singleton): +class NullScalar(Scalar, NullValue): pass @@ -2494,6 +2493,9 @@ class NullColumn(Column, NullValue): pass +_THE_NULL = None + + @public @deferrable def null(type: dt.DataType | str | None = None) -> Value: @@ -2517,8 +2519,11 @@ def null(type: dt.DataType | str | None = None) -> Value: │ True │ └──────┘ """ + global _THE_NULL # noqa: PLW0603 if type is None: - type = dt.null + if _THE_NULL is None: + _THE_NULL = ops.Literal(None, dt.null).to_expr() + return _THE_NULL return ops.Literal(None, type).to_expr() diff --git a/ibis/expr/types/groupby.py b/ibis/expr/types/groupby.py index 38e1c9fadc49..6867be91ff04 100644 --- a/ibis/expr/types/groupby.py +++ b/ibis/expr/types/groupby.py @@ -18,6 +18,7 @@ from typing import TYPE_CHECKING, Annotated +from koerce import Length # noqa: TCH002 from public import public import ibis @@ -25,7 +26,6 @@ import ibis.expr.operations as ops import ibis.expr.types as ir from ibis.common.grounds import Concrete -from ibis.common.patterns import Length # noqa: TCH001 from ibis.common.typing import VarTuple # noqa: TCH001 from ibis.expr.rewrites import rewrite_window_input diff --git a/ibis/expr/types/joins.py b/ibis/expr/types/joins.py index c0b9a7a8b817..dd547aa9909e 100644 --- a/ibis/expr/types/joins.py +++ b/ibis/expr/types/joins.py @@ -7,8 +7,8 @@ import ibis.expr.operations as ops from ibis import util +from ibis.common.collections import DisjointSet from ibis.common.deferred import Deferred -from ibis.common.egraph import DisjointSet from ibis.common.exceptions import ( ExpressionError, IbisInputError, diff --git a/ibis/expr/types/logical.py b/ibis/expr/types/logical.py index 306203c08a6b..7711cfabf871 100644 --- a/ibis/expr/types/logical.py +++ b/ibis/expr/types/logical.py @@ -317,7 +317,7 @@ def any(self, where: BooleanValue | None = None) -> BooleanValue: │ False │ └───────┘ """ - from ibis.common.deferred import Call, Deferred, _ + from koerce import Call, Deferred, _ parents = self.op().relations diff --git a/ibis/expr/types/maps.py b/ibis/expr/types/maps.py index 8672206a6873..eb1194b903a1 100644 --- a/ibis/expr/types/maps.py +++ b/ibis/expr/types/maps.py @@ -2,10 +2,10 @@ from typing import TYPE_CHECKING, Any +from koerce import deferrable from public import public import ibis.expr.operations as ops -from ibis.common.deferred import deferrable from ibis.expr.types.generic import Column, Scalar, Value if TYPE_CHECKING: diff --git a/ibis/expr/types/relations.py b/ibis/expr/types/relations.py index 7e58417609ce..37c52fbacf27 100644 --- a/ibis/expr/types/relations.py +++ b/ibis/expr/types/relations.py @@ -10,6 +10,7 @@ from typing import TYPE_CHECKING, Any, Literal import toolz +from koerce import Builder, Deferred, resolve from public import public import ibis @@ -18,7 +19,6 @@ import ibis.expr.operations as ops import ibis.expr.schema as sch from ibis import util -from ibis.common.deferred import Deferred, Resolver from ibis.common.selectors import Expandable, Selector from ibis.expr.rewrites import DerefMap from ibis.expr.types.core import Expr, _FixedTextJupyterMixin @@ -106,10 +106,8 @@ def bind(table: Table, value) -> Iterator[ir.Value]: elif isinstance(value, Table): for name in value.columns: yield ops.Field(value, name).to_expr() - elif isinstance(value, Deferred): - yield value.resolve(table) - elif isinstance(value, Resolver): - yield value.resolve({"_": table}) + elif isinstance(value, (Deferred, Builder)): + yield resolve(value, _=table) elif isinstance(value, Expandable): yield from value.expand(table) elif callable(value): @@ -277,6 +275,7 @@ def bind(self, *args: Any, **kwargs: Any) -> tuple[Value, ...]: A tuple of bound values """ values = self._fast_bind(*args, **kwargs) + # dereference the values to `self` dm = DerefMap.from_targets(self.op()) result = [] @@ -986,7 +985,8 @@ def aggregate( │ orange │ 0.33 │ 0.33 │ └────────┴────────────┴──────────┘ """ - from ibis.common.patterns import Contains, In + from koerce import If, IsIn + from ibis.expr.rewrites import p node = self.op() @@ -1001,7 +1001,9 @@ def aggregate( # the user doesn't need to specify the metrics used in the having clause # explicitly, we implicitly add them to the metrics list by looking for # any metrics depending on self which are not specified explicitly - pattern = p.Reduction(relations=Contains(node)) & ~In(set(metrics.values())) + pattern = p.Reduction(relations=If(lambda _: node in _)) & ~IsIn( + set(metrics.values()) + ) original_metrics = metrics.copy() for pred in having: for metric in pred.op().find_topmost(pattern): @@ -3838,7 +3840,7 @@ def pivot_longer( if values_transform is None: values_transform = toolz.identity elif isinstance(values_transform, Deferred): - values_transform = values_transform.resolve + values_transform = lambda t, what=values_transform: resolve(what, _=t) pieces = [] @@ -4253,7 +4255,7 @@ def pivot_wider( └───────┴──────────┴──────────┴──────────┘ """ import ibis.selectors as s - from ibis.expr.rewrites import _, p, x + from ibis.expr.rewrites import _, p orig_names_from = util.promote_list(names_from) @@ -4268,7 +4270,7 @@ def pivot_wider( if isinstance(values_agg, str): values_agg = operator.methodcaller(values_agg) elif isinstance(values_agg, Deferred): - values_agg = values_agg.resolve + values_agg = lambda t, what=values_agg: resolve(what, _=t) if names is None: # no names provided, compute them from the data @@ -4302,7 +4304,8 @@ def pivot_wider( rules = ( # add in the where clause to filter the appropriate values p.Reduction(where=None) >> _.copy(where=where) - | p.Reduction(where=x) >> _.copy(where=where & x) + # TODO(kszucs) + # | p.Reduction(where=+x) >> _.copy(where=where & x) ) arg = arg.op().replace(rules, filter=p.Value).to_expr() diff --git a/ibis/expr/types/structs.py b/ibis/expr/types/structs.py index 4c7cdc197094..163147f9dd94 100644 --- a/ibis/expr/types/structs.py +++ b/ibis/expr/types/structs.py @@ -4,11 +4,11 @@ from keyword import iskeyword from typing import TYPE_CHECKING +from koerce import deferrable from public import public import ibis.expr.operations as ops from ibis import util -from ibis.common.deferred import deferrable from ibis.common.exceptions import IbisError from ibis.expr.types.generic import Column, Scalar, Value, literal diff --git a/ibis/expr/types/temporal.py b/ibis/expr/types/temporal.py index 9e238b1af7e9..990d1aca29f6 100644 --- a/ibis/expr/types/temporal.py +++ b/ibis/expr/types/temporal.py @@ -2,6 +2,7 @@ from typing import TYPE_CHECKING, Any, Literal +from koerce import annotated from public import public import ibis @@ -9,7 +10,6 @@ import ibis.expr.datatypes as dt import ibis.expr.operations as ops from ibis import util -from ibis.common.annotations import annotated from ibis.common.temporal import IntervalUnit from ibis.expr.types.core import _binop from ibis.expr.types.generic import Column, Scalar, Value diff --git a/ibis/expr/types/temporal_windows.py b/ibis/expr/types/temporal_windows.py index 170b3b29aa99..7d296a6c93dc 100644 --- a/ibis/expr/types/temporal_windows.py +++ b/ibis/expr/types/temporal_windows.py @@ -8,12 +8,12 @@ import ibis.expr.operations as ops import ibis.expr.types as ir from ibis.common.collections import FrozenOrderedDict # noqa: TCH001 -from ibis.common.grounds import Concrete from ibis.expr.operations.relations import Unaliased # noqa: TCH001 from ibis.expr.types.relations import unwrap_aliases if TYPE_CHECKING: from collections.abc import Sequence +from ibis.common.grounds import Concrete @public diff --git a/ibis/selectors.py b/ibis/selectors.py index ea818e63e7e1..70c2305c5a98 100644 --- a/ibis/selectors.py +++ b/ibis/selectors.py @@ -58,6 +58,7 @@ from functools import reduce from typing import Optional, Union +from koerce import Annotable, Builder, Deferred, resolve from public import public import ibis.common.exceptions as exc @@ -65,9 +66,6 @@ import ibis.expr.operations as ops import ibis.expr.types as ir from ibis import util -from ibis.common.collections import frozendict # noqa: TCH001 -from ibis.common.deferred import Deferred, Resolver -from ibis.common.grounds import Concrete, Singleton from ibis.common.selectors import All, Any, Expandable, Selector from ibis.common.typing import VarTuple # noqa: TCH001 @@ -420,12 +418,12 @@ def cols(*names: str | ir.Column) -> Selector: return Cols(names) -class Across(Concrete, Expandable): +class Across(Expandable): selector: Selector funcs: Union[ - Resolver, + Builder, Callable[[ir.Value], ir.Value], - frozendict[Optional[str], Union[Resolver, Callable[[ir.Value], ir.Value]]], + dict[Optional[str], Union[Builder, Callable[[ir.Value], ir.Value]]], ] names: Union[str, Callable[[str, Optional[str]], str]] @@ -436,8 +434,8 @@ def expand(self, table: ir.Table) -> Sequence[ir.Value]: cols = self.selector.expand(table) for func_name, func in self.funcs.items(): for orig_col in cols: - if isinstance(func, Resolver): - col = func.resolve({"_": orig_col}) + if isinstance(func, Builder): + col = resolve(func, _=orig_col) else: col = func(orig_col) @@ -518,16 +516,16 @@ def across( return Across(selector=selector, funcs=funcs, names=names) -class IfAnyAll(Concrete, Expandable): +class IfAnyAll(Expandable): selector: Selector - predicate: Union[Resolver, Callable[[ir.Value], ir.BooleanValue]] + predicate: Union[Builder, Callable[[ir.Value], ir.BooleanValue]] summarizer: Callable[[ir.BooleanValue, ir.BooleanValue], ir.BooleanValue] def expand(self, table: ir.Table) -> Sequence[ir.Value]: func = self.predicate - if isinstance(func, Resolver): - fn = lambda col, func=func: func.resolve({"_": col}) + if isinstance(func, Builder): + fn = lambda col, func=func: resolve(func, _=col) else: fn = func @@ -630,7 +628,7 @@ def if_all(selector: Selector, predicate: Deferred | Callable) -> IfAnyAll: return IfAnyAll(selector=selector, predicate=predicate, summarizer=operator.and_) -class Slice(Concrete): +class Slice(Annotable, immutable=True): """Hashable and smaller-scoped slice object versus the builtin one.""" start: int | str | None = None @@ -672,7 +670,7 @@ def expand_names(self, table: ir.Table) -> frozenset[str]: return frozenset(iterable) -class Indexable(Singleton): +class Indexable(Annotable, immutable=True): def __getitem__(self, key: str | int | slice | Iterable[int | str]): if isinstance(key, slice): key = Slice(key.start, key.stop, key.step) @@ -716,7 +714,7 @@ def __getitem__(self, key: str | int | slice | Iterable[int | str]): """ -class First(Singleton, Selector): +class First(Selector): def expand(self, table: ir.Table) -> Sequence[ir.Value]: return [table[0]] @@ -730,7 +728,7 @@ def first() -> Selector: return First() -class Last(Singleton, Selector): +class Last(Selector): def expand(self, table: ir.Table) -> Sequence[ir.Value]: return [table[-1]] @@ -744,7 +742,7 @@ def last() -> Selector: return Last() -class AllColumns(Singleton, Selector): +class AllColumns(Selector): def expand(self, table: ir.Table) -> Sequence[ir.Value]: return list(map(table.__getitem__, table.columns)) @@ -758,7 +756,7 @@ def all() -> Selector: return AllColumns() -class NoColumns(Singleton, Selector): +class NoColumns(Selector): def expand(self, table: ir.Table) -> Sequence[ir.Value]: return [] diff --git a/ibis/tests/expr/test_analytics.py b/ibis/tests/expr/test_analytics.py index 007c4e945efb..0b7412f34a4f 100644 --- a/ibis/tests/expr/test_analytics.py +++ b/ibis/tests/expr/test_analytics.py @@ -18,7 +18,7 @@ import ibis import ibis.expr.types as ir from ibis import _ -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError from ibis.tests.expr.mocks import MockBackend from ibis.tests.util import assert_equal diff --git a/ibis/tests/expr/test_case.py b/ibis/tests/expr/test_case.py index 97bfcba5d664..c5cf6a924812 100644 --- a/ibis/tests/expr/test_case.py +++ b/ibis/tests/expr/test_case.py @@ -1,13 +1,14 @@ from __future__ import annotations import pytest +from koerce import resolve import ibis import ibis.expr.datatypes as dt import ibis.expr.operations as ops import ibis.expr.types as ir from ibis import _ -from ibis.common.annotations import SignatureValidationError +from ibis.common.grounds import SignatureValidationError from ibis.tests.util import assert_equal, assert_pickle_roundtrip @@ -42,7 +43,7 @@ def test_ifelse_function_exprs(table): def test_ifelse_function_deferred(table): expr = ibis.ifelse(_.g.isnull(), _.a, 2) assert repr(expr) == "ifelse(_.g.isnull(), _.a, 2)" - res = expr.resolve(table) + res = resolve(expr, _=table) sol = table.g.isnull().ifelse(table.a, 2) assert res.equals(sol) @@ -115,7 +116,7 @@ def test_multiple_case_expr(table): ) # deferred cases - deferred = ( + def2 = ( ibis.case() .when(_.a == 5, table.f) .when(_.b == 128, table.b * 2) @@ -123,31 +124,31 @@ def test_multiple_case_expr(table): .else_(table.d) .end() ) - expr2 = deferred.resolve(table) + expr2 = resolve(def2, _=table) # deferred results - expr3 = ( + def3 = ( ibis.case() .when(table.a == 5, _.f) .when(table.b == 128, _.b * 2) .when(table.c == 1000, _.e) .else_(table.d) .end() - .resolve(table) ) + expr3 = resolve(def3, _=table) # deferred default - expr4 = ( + def4 = ( ibis.case() .when(table.a == 5, table.f) .when(table.b == 128, table.b * 2) .when(table.c == 1000, table.e) .else_(_.d) .end() - .resolve(table) ) + expr4 = resolve(def4, _=table) - assert repr(deferred) == "" + assert repr(def2) == "" assert expr.equals(expr2) assert expr.equals(expr3) assert expr.equals(expr4) @@ -193,7 +194,8 @@ def test_simple_case_null_else(table): def test_multiple_case_null_else(table): expr = ibis.case().when(table.g == "foo", "bar").end() - expr2 = ibis.case().when(table.g == "foo", _).end().resolve("bar") + def2 = ibis.case().when(table.g == "foo", _).end() + expr2 = resolve(def2, _="bar") assert expr.equals(expr2) diff --git a/ibis/tests/expr/test_decimal.py b/ibis/tests/expr/test_decimal.py index 34be555f5da6..6b070f3d108f 100644 --- a/ibis/tests/expr/test_decimal.py +++ b/ibis/tests/expr/test_decimal.py @@ -7,7 +7,7 @@ import ibis import ibis.expr.datatypes as dt import ibis.expr.types as ir -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError def test_type_metadata(lineitem): diff --git a/ibis/tests/expr/test_literal.py b/ibis/tests/expr/test_literal.py index 4da79536aaf4..a022b0215674 100644 --- a/ibis/tests/expr/test_literal.py +++ b/ibis/tests/expr/test_literal.py @@ -5,6 +5,7 @@ import uuid import pytest +from koerce import resolve import ibis import ibis.expr.datatypes as dt @@ -173,5 +174,5 @@ def test_deferred(table): expr = _.g.get_name() dtype = _.g.type() deferred = ibis.literal(expr, type=dtype) - result = deferred.resolve(table) + result = resolve(deferred, _=table) assert result.op().value == "g" diff --git a/ibis/tests/expr/test_sql_builtins.py b/ibis/tests/expr/test_sql_builtins.py index 578f5fc83f88..c7d064575219 100644 --- a/ibis/tests/expr/test_sql_builtins.py +++ b/ibis/tests/expr/test_sql_builtins.py @@ -14,13 +14,14 @@ from __future__ import annotations import pytest +from koerce import resolve import ibis import ibis.backends.sql.compilers as sc import ibis.expr.operations as ops import ibis.expr.types as ir from ibis import _ -from ibis.common.annotations import SignatureValidationError +from ibis.common.grounds import SignatureValidationError from ibis.tests.util import assert_equal @@ -214,15 +215,13 @@ def test_floats(sql_table, function): def test_deferred(sql_table, function): expr = function(None, _.v3, 2) - res = expr.resolve(sql_table) + res = resolve(expr, _=sql_table) sol = function(None, sql_table.v3, 2) assert res.equals(sol) def test_no_arguments_errors(function): - with pytest.raises( - SignatureValidationError, match=".+ has failed due to the following errors:" - ): + with pytest.raises(SignatureValidationError, match="expected at least 1 elements"): function() diff --git a/ibis/tests/expr/test_table.py b/ibis/tests/expr/test_table.py index b0ebe5b76355..45c1893277e4 100644 --- a/ibis/tests/expr/test_table.py +++ b/ibis/tests/expr/test_table.py @@ -14,9 +14,9 @@ import ibis.expr.types as ir import ibis.selectors as s from ibis import _ -from ibis.common.annotations import ValidationError from ibis.common.deferred import Deferred from ibis.common.exceptions import ExpressionError, IntegrityError, RelationError +from ibis.common.grounds import ValidationError from ibis.expr import api from ibis.expr.rewrites import simplify from ibis.expr.tests.test_newrels import join_tables diff --git a/ibis/tests/expr/test_temporal.py b/ibis/tests/expr/test_temporal.py index eb590ace996c..0db85d352a76 100644 --- a/ibis/tests/expr/test_temporal.py +++ b/ibis/tests/expr/test_temporal.py @@ -4,6 +4,7 @@ import operator import pytest +from koerce import resolve from pytest import param import ibis @@ -837,12 +838,12 @@ def test_date_expression(): deferred = ibis.date(_.x, _.y, _.z) expr = ibis.date(t.x, t.y, t.z) assert isinstance(expr.op(), ops.DateFromYMD) - assert deferred.resolve(t).equals(expr) + assert resolve(deferred, _=t).equals(expr) assert repr(deferred) == "date(_.x, _.y, _.z)" deferred = ibis.date(_.s) expr = ibis.date(t.s) - assert deferred.resolve(t).equals(expr) + assert resolve(deferred, _=t).equals(expr) assert repr(deferred) == "date(_.s)" @@ -861,12 +862,12 @@ def test_time_expression(): deferred = ibis.time(_.x, _.y, _.z) expr = ibis.time(t.x, t.y, t.z) assert isinstance(expr.op(), ops.TimeFromHMS) - assert deferred.resolve(t).equals(expr) + assert resolve(deferred, _=t).equals(expr) assert repr(deferred) == "time(_.x, _.y, _.z)" deferred = ibis.time(_.s) expr = ibis.time(t.s) - assert deferred.resolve(t).equals(expr) + assert resolve(deferred, _=t).equals(expr) assert repr(deferred) == "time(_.s)" @@ -893,13 +894,13 @@ def test_timestamp_expression(): deferred = ibis.timestamp(_.a, _.b, _.c, _.d, _.e, _.f) expr = ibis.timestamp(t.a, t.b, t.c, t.d, t.e, t.f) assert isinstance(expr.op(), ops.TimestampFromYMDHMS) - assert deferred.resolve(t).equals(expr) + assert resolve(deferred, _=t).equals(expr) assert repr(deferred) == "timestamp(_.a, _.b, _.c, _.d, _.e, _.f)" t2 = ibis.table({"s": "string"}) deferred = ibis.timestamp(_.s, timezone="UTC") expr = ibis.timestamp(t2.s, timezone="UTC") - assert deferred.resolve(t2).equals(expr) + assert resolve(deferred, _=t2).equals(expr) assert repr(deferred) == "timestamp(_.s, timezone='UTC')" diff --git a/ibis/tests/expr/test_udf.py b/ibis/tests/expr/test_udf.py index 935394e1676d..c76ddb5521cf 100644 --- a/ibis/tests/expr/test_udf.py +++ b/ibis/tests/expr/test_udf.py @@ -1,14 +1,15 @@ from __future__ import annotations import pytest +from koerce import resolve import ibis import ibis.expr.datatypes as dt import ibis.expr.operations as ops import ibis.expr.types as ir from ibis import _ -from ibis.common.annotations import ValidationError from ibis.common.deferred import Deferred +from ibis.common.grounds import ValidationError @pytest.fixture @@ -142,7 +143,7 @@ def myfunc(x: int) -> int: ... expr = myfunc(_.a) assert isinstance(expr, Deferred) assert repr(expr) == "myfunc(_.a)" - assert expr.resolve(table).equals(myfunc(table.a)) + assert resolve(expr, _=table).equals(myfunc(table.a)) def test_builtin_scalar_noargs(): diff --git a/ibis/tests/expr/test_value_exprs.py b/ibis/tests/expr/test_value_exprs.py index d1e1cd5e35c7..8f223780b7a3 100644 --- a/ibis/tests/expr/test_value_exprs.py +++ b/ibis/tests/expr/test_value_exprs.py @@ -12,6 +12,7 @@ import pytest import pytz import toolz +from koerce import resolve from pytest import param import ibis @@ -21,9 +22,9 @@ import ibis.expr.operations as ops import ibis.expr.types as ir from ibis import _, literal -from ibis.common.annotations import ValidationError from ibis.common.collections import frozendict from ibis.common.exceptions import IbisTypeError +from ibis.common.grounds import ValidationError from ibis.expr import api from ibis.tests.util import assert_equal @@ -709,7 +710,7 @@ def test_binop_string_type_error(table, operation, left, right): a = table[left] b = table[right] - with pytest.raises((TypeError, ValidationError)): + with pytest.raises(ValidationError): operation(a, b) @@ -1620,7 +1621,7 @@ def test_deferred_function_call(func, expected_type): ) def test_deferred_nested_types(case): expr, sol = case() - assert expr.resolve(2).equals(sol) + assert resolve(expr, _=2).equals(sol) def test_numpy_ufuncs_dont_cast_columns(): @@ -1734,3 +1735,21 @@ def test_value_fillna_depr_warn(): t = ibis.table({"a": "int", "b": "str"}) with pytest.warns(FutureWarning, match="v9.1"): t.b.fillna("missing") + + +def assert_slotted(obj): + assert hasattr(obj, "__slots__") + assert not hasattr(obj, "__dict__") + + +def test_that_value_expressions_are_slotted(): + t = ibis.table({"a": "int", "b": "str"}) + exprs = [ + t.a, + t.b, + t.a + 1, + t, + ] + for expr in exprs: + assert_slotted(expr) + assert_slotted(expr.op()) diff --git a/ibis/tests/expr/test_window_frames.py b/ibis/tests/expr/test_window_frames.py index 7477544f3da9..23f49f3bfccf 100644 --- a/ibis/tests/expr/test_window_frames.py +++ b/ibis/tests/expr/test_window_frames.py @@ -1,6 +1,7 @@ from __future__ import annotations import pytest +from koerce import MatchError, Pattern from pytest import param import ibis @@ -8,9 +9,8 @@ import ibis.expr.datashape as ds import ibis.expr.datatypes as dt import ibis.expr.operations as ops -from ibis.common.annotations import ValidationError from ibis.common.exceptions import IbisInputError -from ibis.common.patterns import NoMatch, Pattern +from ibis.common.grounds import ValidationError @pytest.fixture @@ -39,19 +39,21 @@ def test_window_boundary_typevars(): p = Pattern.from_typehint(ops.WindowBoundary[dt.Integer, ds.Any]) b = ops.WindowBoundary(5, preceding=False) - assert p.match(b, {}) == b - assert p.match(ops.WindowBoundary(5.0, preceding=False), {}) is NoMatch - assert p.match(ops.WindowBoundary(lit, preceding=True), {}) is NoMatch + assert p.apply(b, {}) == b + with pytest.raises(MatchError): + p.apply(ops.WindowBoundary(5.0, preceding=False)) + with pytest.raises(MatchError): + p.apply(ops.WindowBoundary(lit, preceding=True)) p = Pattern.from_typehint(ops.WindowBoundary[dt.Interval, ds.Any]) b = ops.WindowBoundary(lit, preceding=True) - assert p.match(b, {}) == b + assert p.apply(b, {}) == b def test_window_boundary_coercions(): RowsWindowBoundary = ops.WindowBoundary[dt.Integer, ds.Any] - p = Pattern.from_typehint(RowsWindowBoundary) - assert p.match(1, {}) == RowsWindowBoundary(ops.Literal(1, dtype=dt.int8), False) + p = Pattern.from_typehint(RowsWindowBoundary, allow_coercion=True) + assert p.apply(1) == RowsWindowBoundary(ops.Literal(1, dtype=dt.int8), False) def test_window_builder_rows(): diff --git a/ibis/tests/test_config.py b/ibis/tests/test_config.py index 5640764dd994..6c0e61f8465f 100644 --- a/ibis/tests/test_config.py +++ b/ibis/tests/test_config.py @@ -2,7 +2,7 @@ import pytest -from ibis.common.annotations import ValidationError +from ibis.common.grounds import ValidationError from ibis.config import options diff --git a/ibis/util.py b/ibis/util.py index 993e539dfa88..558ec6e940b6 100644 --- a/ibis/util.py +++ b/ibis/util.py @@ -22,8 +22,6 @@ import toolz -from ibis.common.typing import Coercible - if TYPE_CHECKING: from collections.abc import Callable, Iterator, Sequence from numbers import Real @@ -637,7 +635,7 @@ def __getattr__(self, name: str): return self._factory(obj) -class PseudoHashable(Coercible, Generic[V]): +class PseudoHashable(Generic[V]): """A wrapper that provides a best effort precomputed hash.""" __slots__ = ("obj", "hash") diff --git a/poetry.lock b/poetry.lock index 577ee5e1068f..5b7e557da197 100644 --- a/poetry.lock +++ b/poetry.lock @@ -1710,53 +1710,59 @@ typing = ["typing-extensions (>=4.12.2)"] [[package]] name = "fonttools" -version = "4.53.1" +version = "4.54.0" description = "Tools to manipulate font files" optional = false python-versions = ">=3.8" files = [ - {file = "fonttools-4.53.1-cp310-cp310-macosx_10_9_universal2.whl", hash = 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typing-extensions = ">=4.3.0,<5" +koerce = ">=0.5.1,<1" numpy = { version = ">=1.23.2,<3", optional = true } pandas = { version = ">=1.5.3,<3", optional = true } pyarrow = { version = ">=10.0.1,<18", optional = true } diff --git a/requirements-dev.txt b/requirements-dev.txt index aef0726a39f7..d103089c7528 100644 --- a/requirements-dev.txt +++ b/requirements-dev.txt @@ -58,7 +58,7 @@ execnet==2.1.1 ; python_version >= "3.10" and python_version < "4.0" executing==2.1.0 ; python_version >= "3.10" and python_version < "4.0" fastjsonschema==2.20.0 ; python_version >= "3.10" and python_version < "4.0" filelock==3.16.1 ; python_version >= "3.10" and python_version < "4.0" -fonttools==4.53.1 ; python_version >= "3.10" and python_version < "3.13" +fonttools==4.54.0 ; python_version >= "3.10" and python_version < "3.13" fqdn==1.5.1 ; python_version >= "3.10" and python_version < "3.13" frozenlist==1.4.1 ; python_version >= "3.10" and python_version < "4.0" fsspec==2024.9.0 ; python_version >= "3.10" and python_version < "4.0" @@ -124,6 +124,7 @@ jupyterlite-core==0.3.0 ; python_version >= "3.10" and python_version < "3.13" jupyterlite-pyodide-kernel==0.3.2 ; python_version >= "3.10" and python_version < "3.13" keyring==24.3.1 ; python_version >= "3.10" and python_version < "4.0" kiwisolver==1.4.7 ; python_version >= "3.10" and python_version < "3.13" +koerce==0.5.1 ; python_version >= "3.10" and python_version < "4.0" lonboard==0.9.3 ; python_version >= "3.10" and python_version < "3.13" lz4==4.3.3 ; python_version >= "3.10" and python_version < "4.0" markdown-it-py==3.0.0 ; python_version >= "3.10" and python_version < "4.0" @@ -138,7 +139,7 @@ msgpack==1.1.0 ; python_version >= "3.10" and python_version < "4.0" multidict==6.1.0 ; python_version >= "3.10" and python_version < "4.0" mypy-extensions==1.0.0 ; python_version >= "3.10" and python_version < "4.0" mysqlclient==2.2.4 ; python_version >= "3.10" and python_version < "4.0" -narwhals==1.8.2 ; python_version >= "3.10" 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