ASTGen: Translate function generic parameter clauses

Author: AnthonyLatsis

include/swift/AST/CASTBridging.h

@@ -325,6 +325,7 @@ struct BridgedFuncDecl
 FuncDecl_create(BridgedASTContext cContext, BridgedDeclContext cDeclContext,
                 BridgedSourceLoc cStaticLoc, BridgedSourceLoc cFuncKeywordLoc,
                 BridgedIdentifier cName, BridgedSourceLoc cNameLoc,
+                void *_Nullable opaqueGenericParamList,
                 void *opaqueParameterList, BridgedSourceLoc cAsyncLoc,
                 BridgedSourceLoc cThrowsLoc, void *_Nullable opaqueReturnType);
 void FuncDecl_setBody(void *fn, void *body);

lib/AST/CASTBridging.cpp

@@ -446,6 +446,7 @@ BridgedFuncDecl
 FuncDecl_create(BridgedASTContext cContext, BridgedDeclContext cDeclContext,
                 BridgedSourceLoc cStaticLoc, BridgedSourceLoc cFuncKeywordLoc,
                 BridgedIdentifier cName, BridgedSourceLoc cNameLoc,
+                void *_Nullable opaqueGenericParamList,
                 void *opaqueParameterList, BridgedSourceLoc cAsyncLoc,
                 BridgedSourceLoc cThrowsLoc, void *_Nullable opaqueReturnType) {
   ASTContext &context = convertASTContext(cContext);
@@ -458,8 +459,9 @@ FuncDecl_create(BridgedASTContext cContext, BridgedDeclContext cDeclContext,
   auto *out = FuncDecl::create(
       context, convertSourceLoc(cStaticLoc), StaticSpellingKind::None,
       convertSourceLoc(cFuncKeywordLoc), declName, convertSourceLoc(cNameLoc),
-      asyncLoc.isValid(), asyncLoc, throwsLoc.isValid(), throwsLoc, nullptr,
-      paramList, static_cast<TypeRepr *>(opaqueReturnType),
+      asyncLoc.isValid(), asyncLoc, throwsLoc.isValid(), throwsLoc,
+      static_cast<GenericParamList *>(opaqueGenericParamList), paramList,
+      static_cast<TypeRepr *>(opaqueReturnType),
       convertDeclContext(cDeclContext));
 
   return {bridgeDeclContext(out), static_cast<FuncDecl *>(out),

lib/ASTGen/Sources/ASTGen/Decls.swift

@@ -98,6 +98,7 @@ extension ASTGenVisitor {
       self.bridgedSourceLoc(for: node.funcKeyword),
       name,
       nameLoc,
+      self.visit(node.genericParameterClause)?.rawValue,
       self.visit(node.signature.parameterClause).rawValue,
       self.bridgedSourceLoc(for: node.signature.effectSpecifiers?.asyncSpecifier),
       self.bridgedSourceLoc(for: node.signature.effectSpecifiers?.throwsSpecifier),

test/ASTGen/verify-parse.swift

@@ -79,6 +79,8 @@ func test8(_ i: _const Int) {
 
 func test9(_ value: Any) { }
 
+func test10<T>(t: T) {}
+
 typealias
 Alias<T>
 =