Annotate native methods.

pkg/front_end/lib/src/fasta/kernel/body_builder.dart

 // Copyright (c) 2016, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library fasta.body_builder;
 
 import 'package:front_end/src/fasta/parser/parser.dart' show
     FormalParameterType,
     optional;
 
@@ skipping 128 matching lines @@
   int functionNestingLevel = 0;
 
   Statement compileTimeErrorInTry;
 
   Statement compileTimeErrorInLoopOrSwitch;
 
   Scope switchScope;
 
   CloneVisitor cloner;
 
-  /// Set to true each time we parse a native function body. It is reset in
-  /// [handleInvalidFunctionBody] which is called immediately after.
-  bool lastErrorWasNativeFunctionBody = false;
-
   BodyBuilder(KernelLibraryBuilder library, this.member, Scope scope,
       this.formalParameterScope, this.hierarchy, this.coreTypes,
       this.classBuilder, this.isInstanceMember)
       : enclosingScope = scope,
         library = library,
         isDartLibrary = library.uri.scheme == "dart",
         super(scope);
 
   bool get inConstructor {
     return functionNestingLevel == 0 && member is KernelConstructorBuilder;
@@ skipping 2001 matching lines @@
     if (!hasParserError) {
       print("$uri:${recoverableErrors.last}");
     }
     hasParserError = true;
   }
 
   @override
   Token handleUnrecoverableError(Token token, ErrorKind kind, Map arguments) {
     if (isDartLibrary && kind == ErrorKind.ExpectedFunctionBody) {
       Token recover = skipNativeClause(token);
-      if (recover != null) {
-        buildNative(unescapeString(token.next.value));
-        return recover;
-      }
+      if (recover != null) return recover;
     } else if (kind == ErrorKind.UnexpectedToken) {
       String expected = arguments["expected"];
       const List<String> trailing = const <String>[")", "}", ";", ","];
       if (trailing.contains(token.stringValue) && trailing.contains(expected)) {
         arguments.putIfAbsent("actual", () => token.value);
         handleRecoverableError(token, ErrorKind.ExpectedButGot, arguments);
       }
       return token;
     }
     return super.handleUnrecoverableError(token, kind, arguments);
@@ skipping 49 matching lines @@
     debugEvent("Operator");
     push(new Operator(token.stringValue)..fileOffset = token.charOffset);
   }
 
   dynamic addCompileTimeError(int charOffset, String message) {
     return library.addCompileTimeError(charOffset, message, uri);
   }
 
   @override
   void handleInvalidFunctionBody(Token token) {
-    if (!lastErrorWasNativeFunctionBody) {
+    if (member.isNative) {
+      push(NullValue.FunctionBody);
+    } else {
       push(new Block(<Statement>[new InvalidStatement()]));
     }
-    lastErrorWasNativeFunctionBody = false;
-  }
-
-  void buildNative(String native) {
-    lastErrorWasNativeFunctionBody = true;
-
-    // From dartk:
-    //
-    //   currentMember.isExternal = true;
-    //   currentMember.addAnnotation(new ast.ConstructorInvocation(
-    //       scope.loader.getCoreClassConstructorReference('ExternalName',
-    //           library: 'dart:_internal'),
-    //       new ast.Arguments(<ast.Expression>[
-    //         new ast.StringLiteral(body.stringLiteral.stringValue)
-    //       ]),
-    //       isConst: true));
-    push(new Block(<Statement>[new InvalidStatement()]));
   }
 
   @override
   void debugEvent(String name) {
     // printEvent(name);
   }
 }
 
 // TODO(ahe): Shouldn't need to be an expression.
 class UnresolvedIdentifier extends InvalidExpression {
@@ skipping 422 matching lines @@
   } else if (node is TypeDeclarationBuilder) {
     return node.name;
   } else if (node is PrefixBuilder) {
     return node.name;
   } else if (node is ThisPropertyAccessor) {
     return node.name.name;
   } else {
     return internalError("Unhandled: ${node.runtimeType}");
   }
 }