Implement automatic loading of dart:core_native_fields library

vm/parser.cc

 // Copyright (c) 2011, 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.
 
 #include "vm/parser.h"
 
 #include "vm/bigint_operations.h"
 #include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/compiler_stats.h"
@@ skipping 3078 matching lines @@
     const String& name = *CurrentLiteral();
     ConsumeToken();
     ExpectToken(Token::kRPAREN);
     ExpectToken(Token::kSEMICOLON);
     library_.SetName(name);
   }
 }
 
 
 Dart_Handle Parser::CallLibraryTagHandler(Dart_LibraryTag tag,
-                                   intptr_t token_pos,
-                                   const String& url) {
+                                          intptr_t token_pos,
+                                          const String& url) {
   Dart_LibraryTagHandler handler = Isolate::Current()->library_tag_handler();
+  bool is_native_flds_library_url = url.Equals("dart:core-native-fields");

[Ivan Posva, 2011/11/16 19:19:53]

I do not see any reason why this library needs to be handled specially.

[siva, 2011/11/17 00:04:28]

Removed.

On 2011/11/16 19:19:53, Ivan Posva wrote:

+  if (is_native_flds_library_url) {
+    if (tag == kCanonicalizeUrl) {
+      return Api::NewLocalHandle(url);
+    }
+    const Library& library = Library::Handle(Library::LookupLibrary(url));
+    ASSERT(!library.IsNull());
+    return Api::NewLocalHandle(library);
+  }
   if (handler == NULL) {
     ErrorMsg(token_pos, "no library handler registered");
   }
   Dart_Handle result = handler(tag,
                                Api::NewLocalHandle(library_),
                                Api::NewLocalHandle(url));
   if (Dart_IsError(result)) {
     ErrorMsg(token_pos, "library handler failed: %s", Dart_GetError(result));
   }
   return result;
@@ skipping 4177 matching lines @@
 }
 
 
 void Parser::SkipNestedExpr() {
   const bool saved_mode = SetAllowFunctionLiterals(true);
   SkipExpr();
   SetAllowFunctionLiterals(saved_mode);
 }
 
 }  // namespace dart