Define cross-module extensions

Author: j-f1

Sources/CSSOM/Generated.swift

@@ -1665,6 +1665,10 @@ public extension ElementCSSInlineStyle {
     @inlinable var attributeStyleMap: StylePropertyMap { jsObject[Strings.attributeStyleMap].fromJSValue()! }
 }
 
+extension SVGElement: ElementCSSInlineStyle {}
+
+extension MathMLElement: ElementCSSInlineStyle {}
+
 public protocol GeometryUtils: JSBridgedClass {}
 public extension GeometryUtils {
     @inlinable func getBoxQuads(options: BoxQuadOptions? = nil) -> [DOMQuad] {
@@ -1688,6 +1692,10 @@ public extension GeometryUtils {
     }
 }
 
+extension Text: GeometryUtils {}
+
+extension CSSPseudoElement: GeometryUtils {}
+
 public protocol LinkStyle: JSBridgedClass {}
 public extension LinkStyle {
     @inlinable var sheet: CSSStyleSheet? { jsObject[Strings.sheet].fromJSValue() }

Sources/FileSystem/Generated.swift

@@ -439,6 +439,10 @@ public extension NavigatorStorage {
     @inlinable var storage: StorageManager { jsObject[Strings.storage].fromJSValue()! }
 }
 
+extension WorkerNavigator: NavigatorStorage {}
+
+extension Navigator: NavigatorStorage {}
+
 public class OpenFilePickerOptions: BridgedDictionary {
     public convenience init(multiple: Bool) {
         let object = JSObject.global[Strings.Object].function!.new()

Sources/WebAnimations/Generated.swift

@@ -20,6 +20,8 @@ public extension Animatable {
     }
 }
 
+extension Element: Animatable {}
+
 public class Animation: EventTarget {
     @inlinable override public class var constructor: JSFunction? { JSObject.global[Strings.Animation].function }
 

Sources/WebGPU/Generated.swift

@@ -3532,6 +3532,10 @@ public extension NavigatorGPU {
     @inlinable var gpu: GPU { jsObject[Strings.gpu].fromJSValue()! }
 }
 
+extension Navigator: NavigatorGPU {}
+
+extension WorkerNavigator: NavigatorGPU {}
+
 public typealias GPUBufferUsageFlags = UInt32
 public typealias GPUMapModeFlags = UInt32
 public typealias GPUTextureUsageFlags = UInt32

Sources/WebIDLToSwift/MergeDeclarations.swift

@@ -114,8 +114,9 @@ enum DeclarationMerger {
             }
         }
 
-        let includes = Dictionary(grouping: allNodes(ofType: IDLIncludes.self)) { $0.target }
+        var includes = Dictionary(grouping: allNodes(ofType: IDLIncludes.self)) { $0.target }
             .mapValues { $0.map(\.includes).filter { !Self.ignoredParents.contains($0) } }
+            .filter { !$0.value.isEmpty }
 
         let mergedInterfaces = Dictionary(
             grouping: allNodes(ofType: IDLInterface.self).map {
@@ -145,7 +146,7 @@ enum DeclarationMerger {
                 partialResult.exposedToAll = partialResult.exposedToAll || interface.exposedToAll
                 partialResult.global = partialResult.global || interface.global
             }
-            interface.mixins = includes[interface.name, default: []]
+            interface.mixins = includes.removeValue(forKey: interface.name) ?? []
             if let decl = interface.members.first(where: { $0 is IDLIterableDeclaration }) as? IDLIterableDeclaration {
                 interface.mixins.append(decl.async ? "AsyncSequence" : "Sequence")
             }
@@ -214,6 +215,7 @@ enum DeclarationMerger {
                 + Array(mergedDictionaries.values)
                 + Array(mixins.values)
                 + Array(mergedNamespaces.values)
+                + Array(includes.map(Extension.init))
         return MergeResult(
             declarations: arrays
                 + [Typedefs(typedefs: allTypes)]
@@ -298,6 +300,14 @@ struct MergedInterface: DeclarationFile {
     var global: Bool
 }
 
+struct Extension: DeclarationFile {
+    // sort next to declaration of protocol, hopefully
+    var name: String { protocols.joined(separator: ", ") }
+    let conformer: String
+    var protocols: [String]
+}
+
+
 struct Typedefs: DeclarationFile, SwiftRepresentable {
     let name = "Typedefs"
     let typedefs: [IDLTypealias]

Sources/WebIDLToSwift/WebIDL+SwiftRepresentation.swift

@@ -783,3 +783,12 @@ extension IDLValue: SwiftRepresentable {
         }
     }
 }
+
+extension Extension: SwiftRepresentable {
+    var swiftRepresentation: SwiftSource {
+         """
+         extension \(conformer): \(raw: protocols.joined(separator: ", ")) {}
+         \n
+         """
+    }
+}