Separate JSON parsing from the JavaScript parser.

src/runtime.cc

 // Copyright 2006-2009 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 6914 matching lines @@
 
 
 static Object* Runtime_GlobalReceiver(Arguments args) {
   ASSERT(args.length() == 1);
   Object* global = args[0];
   if (!global->IsJSGlobalObject()) return Heap::null_value();
   return JSGlobalObject::cast(global)->global_receiver();
 }
 
 
+static Object* Runtime_ParseJson(Arguments args) {
+  HandleScope scope;
+  ASSERT_EQ(1, args.length());
+  CONVERT_ARG_CHECKED(String, source, 0);
+
+  Handle<Object> result = JsonParser::Parse(source);
+  if (result.is_null()) {
+    // Syntax error or stack overflow in scanner.
+    ASSERT(Top::has_pending_exception());
+    return Failure::Exception();
+  }
+  return *result;
+}
+
+
 static Object* Runtime_CompileString(Arguments args) {
   HandleScope scope;
-  ASSERT_EQ(2, args.length());
+  ASSERT_EQ(1, args.length());
   CONVERT_ARG_CHECKED(String, source, 0);
-  CONVERT_ARG_CHECKED(Oddball, is_json, 1)
 
   // Compile source string in the global context.
   Handle<Context> context(Top::context()->global_context());
-  Compiler::ValidationState validate = (is_json->IsTrue())
-    ? Compiler::VALIDATE_JSON : Compiler::DONT_VALIDATE_JSON;
   Handle<SharedFunctionInfo> shared = Compiler::CompileEval(source,
                                                             context,
-                                                            true,
-                                                            validate);
+                                                            true);
   if (shared.is_null()) return Failure::Exception();
   Handle<JSFunction> fun =
       Factory::NewFunctionFromSharedFunctionInfo(shared, context, NOT_TENURED);
   return *fun;
 }
 
 
 static ObjectPair CompileGlobalEval(Handle<String> source,
                                     Handle<Object> receiver) {
   // Deal with a normal eval call with a string argument. Compile it
   // and return the compiled function bound in the local context.
   Handle<SharedFunctionInfo> shared = Compiler::CompileEval(
       source,
       Handle<Context>(Top::context()),
-      Top::context()->IsGlobalContext(),
-      Compiler::DONT_VALIDATE_JSON);
+      Top::context()->IsGlobalContext());
   if (shared.is_null()) return MakePair(Failure::Exception(), NULL);
   Handle<JSFunction> compiled = Factory::NewFunctionFromSharedFunctionInfo(
       shared,
       Handle<Context>(Top::context()),
       NOT_TENURED);
   return MakePair(*compiled, *receiver);
 }
 
 
 static ObjectPair Runtime_ResolvePossiblyDirectEval(Arguments args) {
@@ skipping 2182 matching lines @@
   // function(arguments,__source__) {return eval(__source__);}
   static const char* source_str =
       "(function(arguments,__source__){return eval(__source__);})";
   static const int source_str_length = StrLength(source_str);
   Handle<String> function_source =
       Factory::NewStringFromAscii(Vector<const char>(source_str,
                                                      source_str_length));
   Handle<SharedFunctionInfo> shared =
       Compiler::CompileEval(function_source,
                             context,
-                            context->IsGlobalContext(),
-                            Compiler::DONT_VALIDATE_JSON);
+                            context->IsGlobalContext());
   if (shared.is_null()) return Failure::Exception();
   Handle<JSFunction> compiled_function =
       Factory::NewFunctionFromSharedFunctionInfo(shared, context);
 
   // Invoke the result of the compilation to get the evaluation function.
   bool has_pending_exception;
   Handle<Object> receiver(frame->receiver());
   Handle<Object> evaluation_function =
       Execution::Call(compiled_function, receiver, 0, NULL,
                       &has_pending_exception);
@@ skipping 46 matching lines @@
   }
 
   // Get the global context now set to the top context from before the
   // debugger was invoked.
   Handle<Context> context = Top::global_context();
 
   // Compile the source to be evaluated.
   Handle<SharedFunctionInfo> shared =
       Compiler::CompileEval(source,
                             context,
-                            true,
-                            Compiler::DONT_VALIDATE_JSON);
+                            true);
   if (shared.is_null()) return Failure::Exception();
   Handle<JSFunction> compiled_function =
       Handle<JSFunction>(Factory::NewFunctionFromSharedFunctionInfo(shared,
                                                                     context));
 
   // Invoke the result of the compilation to get the evaluation function.
   bool has_pending_exception;
   Handle<Object> receiver = Top::global();
   Handle<Object> result =
     Execution::Call(compiled_function, receiver, 0, NULL,
@@ skipping 910 matching lines @@
   } else {
     // Handle last resort GC and make sure to allow future allocations
     // to grow the heap without causing GCs (if possible).
     Counters::gc_last_resort_from_js.Increment();
     Heap::CollectAllGarbage(false);
   }
 }
 
 
 } }  // namespace v8::internal