From 885f0cae2272443d7ab4e8f9d049ff2e8010b295 Mon Sep 17 00:00:00 2001
From: Tibor Bodecs <mail.tib@gmail.com>
Date: Sat, 26 Feb 2022 17:24:51 +0100
Subject: [PATCH] async await init support

---
 Sources/SwiftSgml/Tag.swift         |  6 ++++++
 Tests/SwiftSgmlTests/TagTests.swift | 20 ++++++++++++++++++++
 2 files changed, 26 insertions(+)

diff --git a/Sources/SwiftSgml/Tag.swift b/Sources/SwiftSgml/Tag.swift
index 8cc6f5f..1d49659 100644
--- a/Sources/SwiftSgml/Tag.swift
+++ b/Sources/SwiftSgml/Tag.swift
@@ -31,6 +31,12 @@ open class Tag {
     public convenience init(@TagBuilder _ builder: () -> [Tag]) {
         self.init(builder())
     }
+   
+    /// initialize a new Tag with children using an async throwing builder
+    public convenience init(@TagBuilder _ builder: () async throws -> [Tag]) async throws {
+        self.init(try await builder())
+    }
+
 
     /// initialize a new Tag with some contents
     public convenience init(_ contents: String?) {
diff --git a/Tests/SwiftSgmlTests/TagTests.swift b/Tests/SwiftSgmlTests/TagTests.swift
index 15e1cb9..36aac7b 100644
--- a/Tests/SwiftSgmlTests/TagTests.swift
+++ b/Tests/SwiftSgmlTests/TagTests.swift
@@ -23,4 +23,24 @@ final class TagTests: XCTestCase {
                             """)
     }
     
+    func testConvenienceAsyncTagInit() async throws {
+        
+        func leaf() async throws -> Leaf {
+            Leaf("hello")
+        }
+
+        let root = try await Root {
+            try await leaf()
+        }
+        let doc = Document {
+            root
+        }
+
+        XCTAssertEqual(DocumentRenderer().render(doc), """
+                            <root>
+                                <leaf>hello</leaf>
+                            </root>
+                            """)
     }
+    
+}