Introduce LanguageMode, drop StrictMode.

src/runtime/runtime-scopes.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/accessors.h"
 #include "src/arguments.h"
 #include "src/frames-inl.h"
 #include "src/runtime/runtime-utils.h"
@@ skipping 135 matching lines @@
   HandleScope scope(isolate);
   // args[0] == name
   // args[1] == language_mode
   // args[2] == value (optional)
 
   // Determine if we need to assign to the variable if it already
   // exists (based on the number of arguments).
   RUNTIME_ASSERT(args.length() == 3);
 
   CONVERT_ARG_HANDLE_CHECKED(String, name, 0);
-  CONVERT_STRICT_MODE_ARG_CHECKED(strict_mode, 1);
+  CONVERT_LANGUAGE_MODE_ARG_CHECKED(language_mode, 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 2);
 
   Handle<GlobalObject> global(isolate->context()->global_object());
   Handle<Object> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
-      isolate, result, Object::SetProperty(global, name, value, strict_mode));
+      isolate, result, Object::SetProperty(global, name, value, language_mode));
   return *result;
 }
 
 
 RUNTIME_FUNCTION(Runtime_InitializeConstGlobal) {
   HandleScope handle_scope(isolate);
   // All constants are declared with an initial value. The name
   // of the constant is the first argument and the initial value
   // is the second.
   RUNTIME_ASSERT(args.length() == 2);
@@ skipping 297 matching lines @@
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, callee, 0);
   JavaScriptFrameIterator it(isolate);
 
   // Find the frame that holds the actual arguments passed to the function.
   it.AdvanceToArgumentsFrame();
   JavaScriptFrame* frame = it.frame();
 
   // Determine parameter location on the stack and dispatch on language mode.
   int argument_count = frame->GetArgumentsLength();
   Object** parameters = reinterpret_cast<Object**>(frame->GetParameterSlot(-1));
-  return callee->shared()->strict_mode() == STRICT
+  return is_strict(callee->shared()->language_mode())
              ? *NewStrictArguments(isolate, callee, parameters, argument_count)
              : *NewSloppyArguments(isolate, callee, parameters, argument_count);
 }
 
 
 RUNTIME_FUNCTION(Runtime_NewSloppyArguments) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 3);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, callee, 0);
   Object** parameters = reinterpret_cast<Object**>(args[1]);
@@ skipping 451 matching lines @@
 }
 
 
 RUNTIME_FUNCTION(Runtime_StoreLookupSlot) {
   HandleScope scope(isolate);
   DCHECK(args.length() == 4);
 
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 0);
   CONVERT_ARG_HANDLE_CHECKED(Context, context, 1);
   CONVERT_ARG_HANDLE_CHECKED(String, name, 2);
-  CONVERT_STRICT_MODE_ARG_CHECKED(strict_mode, 3);
+  CONVERT_LANGUAGE_MODE_ARG_CHECKED(language_mode, 3);
 
   int index;
   PropertyAttributes attributes;
   ContextLookupFlags flags = FOLLOW_CHAINS;
   BindingFlags binding_flags;
   Handle<Object> holder =
       context->Lookup(name, flags, &index, &attributes, &binding_flags);
   // In case of JSProxy, an exception might have been thrown.
   if (isolate->has_pending_exception()) return isolate->heap()->exception();
 
   // The property was found in a context slot.
   if (index >= 0) {
     if ((attributes & READ_ONLY) == 0) {
       Handle<Context>::cast(holder)->set(index, *value);
-    } else if (strict_mode == STRICT) {
+    } else if (is_strict(language_mode)) {
       // Setting read only property in strict mode.
       THROW_NEW_ERROR_RETURN_FAILURE(
           isolate,
           NewTypeError("strict_cannot_assign", HandleVector(&name, 1)));
     }
     return *value;
   }
 
   // Slow case: The property is not in a context slot.  It is either in a
   // context extension object, a property of the subject of a with, or a
   // property of the global object.
   Handle<JSReceiver> object;
   if (attributes != ABSENT) {
     // The property exists on the holder.
     object = Handle<JSReceiver>::cast(holder);
-  } else if (strict_mode == STRICT) {
+  } else if (is_strict(language_mode)) {
     // If absent in strict mode: throw.
     THROW_NEW_ERROR_RETURN_FAILURE(
         isolate, NewReferenceError("not_defined", HandleVector(&name, 1)));
   } else {
     // If absent in sloppy mode: add the property to the global object.
     object = Handle<JSReceiver>(context->global_object());
   }
 
   RETURN_FAILURE_ON_EXCEPTION(
-      isolate, Object::SetProperty(object, name, value, strict_mode));
+      isolate, Object::SetProperty(object, name, value, language_mode));
 
   return *value;
 }
 
 
 RUNTIME_FUNCTION(Runtime_GetArgumentsProperty) {
   SealHandleScope shs(isolate);
   DCHECK(args.length() == 1);
   CONVERT_ARG_HANDLE_CHECKED(Object, raw_key, 0);
 
@@ skipping 46 matching lines @@
       return *result;
     }
   }
 
   // Handle special arguments properties.
   if (String::Equals(isolate->factory()->length_string(), key)) {
     return Smi::FromInt(n);
   }
   if (String::Equals(isolate->factory()->callee_string(), key)) {
     JSFunction* function = frame->function();
-    if (function->shared()->strict_mode() == STRICT) {
+    if (is_strict(function->shared()->language_mode())) {
       THROW_NEW_ERROR_RETURN_FAILURE(
           isolate, NewTypeError("strict_arguments_callee",
                                 HandleVector<Object>(NULL, 0)));
     }
     return function;
   }
 
   // Lookup in the initial Object.prototype object.
   Handle<Object> result;
   ASSIGN_RETURN_FAILURE_ON_EXCEPTION(
@@ skipping 11 matching lines @@
   return Smi::FromInt(frame->GetArgumentsLength());
 }
 
 
 RUNTIME_FUNCTION(RuntimeReference_Arguments) {
   SealHandleScope shs(isolate);
   return __RT_impl_Runtime_GetArgumentsProperty(args, isolate);
 }
 }
 }  // namespace v8::internal