Add script context with context-allocated "const this"

src/runtime/runtime-compiler.cc

 // Copyright 2014 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "src/v8.h"
 
 #include "src/arguments.h"
 #include "src/compiler.h"
 #include "src/deoptimizer.h"
 #include "src/frames.h"
@@ skipping 363 matching lines @@
   Handle<SharedFunctionInfo> outer_info(context->closure()->shared(), isolate);
   Handle<JSFunction> fun;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
       isolate, fun,
       Compiler::GetFunctionFromEval(source, outer_info, context, SLOPPY,
                                     restriction, RelocInfo::kNoPosition));
   return *fun;
 }
 
 
-static ObjectPair CompileGlobalEval(Isolate* isolate, Handle<String> source,
-                                    Handle<SharedFunctionInfo> outer_info,
-                                    Handle<Object> receiver,
-                                    LanguageMode language_mode,
-                                    int scope_position) {
+static Object* CompileGlobalEval(Isolate* isolate, Handle<String> source,
+                                 Handle<SharedFunctionInfo> outer_info,
+                                 LanguageMode language_mode,
+                                 int scope_position) {
   Handle<Context> context = Handle<Context>(isolate->context());
   Handle<Context> native_context = Handle<Context>(context->native_context());
 
   // Check if native context allows code generation from
   // strings. Throw an exception if it doesn't.
   if (native_context->allow_code_gen_from_strings()->IsFalse() &&
       !CodeGenerationFromStringsAllowed(isolate, native_context)) {
     Handle<Object> error_message =
         native_context->ErrorMessageForCodeGenerationFromStrings();
     Handle<Object> error;
     MaybeHandle<Object> maybe_error = isolate->factory()->NewEvalError(
         MessageTemplate::kCodeGenFromStrings, error_message);
     if (maybe_error.ToHandle(&error)) isolate->Throw(*error);
-    return MakePair(isolate->heap()->exception(), NULL);
+    return isolate->heap()->exception();
   }
 
   // Deal with a normal eval call with a string argument. Compile it
   // and return the compiled function bound in the local context.
   static const ParseRestriction restriction = NO_PARSE_RESTRICTION;
   Handle<JSFunction> compiled;
   ASSIGN_RETURN_ON_EXCEPTION_VALUE(
       isolate, compiled,
       Compiler::GetFunctionFromEval(source, outer_info, context, language_mode,
                                     restriction, scope_position),
-      MakePair(isolate->heap()->exception(), NULL));
-  return MakePair(*compiled, *receiver);
+      isolate->heap()->exception());
+  return *compiled;
 }
 
 
-RUNTIME_FUNCTION_RETURN_PAIR(Runtime_ResolvePossiblyDirectEval) {
+RUNTIME_FUNCTION(Runtime_ResolvePossiblyDirectEval) {
   HandleScope scope(isolate);
-  DCHECK(args.length() == 6);
+  DCHECK(args.length() == 5);
 
   Handle<Object> callee = args.at<Object>(0);
 
   // If "eval" didn't refer to the original GlobalEval, it's not a
   // direct call to eval.
   // (And even if it is, but the first argument isn't a string, just let
   // execution default to an indirect call to eval, which will also return
   // the first argument without doing anything).
   if (*callee != isolate->native_context()->global_eval_fun() ||
       !args[1]->IsString()) {
-    return MakePair(*callee, isolate->heap()->undefined_value());
+    return *callee;
   }
 
+  DCHECK(args[3]->IsSmi());
+  DCHECK(is_valid_language_mode(args.smi_at(3)));
+  LanguageMode language_mode = static_cast<LanguageMode>(args.smi_at(3));
   DCHECK(args[4]->IsSmi());
-  DCHECK(is_valid_language_mode(args.smi_at(4)));
-  LanguageMode language_mode = static_cast<LanguageMode>(args.smi_at(4));
-  DCHECK(args[5]->IsSmi());
   Handle<SharedFunctionInfo> outer_info(args.at<JSFunction>(2)->shared(),
                                         isolate);
   return CompileGlobalEval(isolate, args.at<String>(1), outer_info,
-                           args.at<Object>(3), language_mode, args.smi_at(5));
+                           language_mode, args.smi_at(4));
 }
 }  // namespace internal
 }  // namespace v8