Rip out most of our outdated modules implementation.

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/runtime/runtime-utils.h"
 
 #include "src/accessors.h"
 #include "src/arguments.h"
 #include "src/ast/scopeinfo.h"
 #include "src/ast/scopes.h"
@@ skipping 670 matching lines @@
   CONVERT_ARG_HANDLE_CHECKED(ScopeInfo, scope_info, 0);
   CONVERT_ARG_HANDLE_CHECKED(JSFunction, function, 1);
   Handle<Context> current(isolate->context());
   Handle<Context> context =
       isolate->factory()->NewBlockContext(function, current, scope_info);
   isolate->set_context(*context);
   return *context;
 }
 
 
-RUNTIME_FUNCTION(Runtime_IsJSModule) {
-  SealHandleScope shs(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_CHECKED(Object, obj, 0);
-  return isolate->heap()->ToBoolean(obj->IsJSModule());
-}
-
-
-RUNTIME_FUNCTION(Runtime_PushModuleContext) {
-  SealHandleScope shs(isolate);
-  DCHECK(args.length() == 2);
-  CONVERT_SMI_ARG_CHECKED(index, 0);
-
-  if (!args[1]->IsScopeInfo()) {
-    // Module already initialized. Find hosting context and retrieve context.
-    Context* host = Context::cast(isolate->context())->script_context();
-    Context* context = Context::cast(host->get(index));
-    DCHECK(context->previous() == isolate->context());
-    isolate->set_context(context);
-    return context;
-  }
-
-  CONVERT_ARG_HANDLE_CHECKED(ScopeInfo, scope_info, 1);
-
-  // Allocate module context.
-  HandleScope scope(isolate);
-  Factory* factory = isolate->factory();
-  Handle<Context> context = factory->NewModuleContext(scope_info);
-  Handle<JSModule> module = factory->NewJSModule(context, scope_info);
-  context->set_module(*module);
-  Context* previous = isolate->context();
-  context->set_previous(previous);
-  context->set_closure(previous->closure());
-  context->set_native_context(previous->native_context());
-  isolate->set_context(*context);
-
-  // Find hosting scope and initialize internal variable holding module there.
-  previous->script_context()->set(index, *context);
-
-  return *context;
-}
-
-
-RUNTIME_FUNCTION(Runtime_DeclareModules) {
-  HandleScope scope(isolate);
-  DCHECK(args.length() == 1);
-  CONVERT_ARG_HANDLE_CHECKED(FixedArray, descriptions, 0);
-  Context* host_context = isolate->context();
-
-  for (int i = 0; i < descriptions->length(); ++i) {
-    Handle<ModuleInfo> description(ModuleInfo::cast(descriptions->get(i)));
-    int host_index = description->host_index();
-    Handle<Context> context(Context::cast(host_context->get(host_index)));
-    Handle<JSModule> module(context->module());
-
-    for (int j = 0; j < description->length(); ++j) {
-      Handle<String> name(description->name(j), isolate);
-      VariableMode mode = description->mode(j);
-      int index = description->index(j);
-      switch (mode) {
-        case VAR:
-        case LET:
-        case CONST:
-        case CONST_LEGACY: {
-          PropertyAttributes attr =
-              IsImmutableVariableMode(mode) ? FROZEN : SEALED;
-          Handle<AccessorInfo> info =
-              Accessors::MakeModuleExport(name, index, attr);
-          Handle<Object> result =
-              JSObject::SetAccessor(module, info).ToHandleChecked();
-          DCHECK(!result->IsUndefined(isolate));
-          USE(result);
-          break;
-        }
-        case TEMPORARY:
-        case DYNAMIC:
-        case DYNAMIC_GLOBAL:
-        case DYNAMIC_LOCAL:
-          UNREACHABLE();
-      }
-    }
-
-    if (JSObject::PreventExtensions(module, Object::THROW_ON_ERROR)
-            .IsNothing()) {
-      DCHECK(false);
-    }
-  }
-
-  DCHECK(!isolate->has_pending_exception());
-  return isolate->heap()->undefined_value();
-}
-
-
 RUNTIME_FUNCTION(Runtime_DeleteLookupSlot) {
   HandleScope scope(isolate);
   DCHECK_EQ(1, args.length());
   CONVERT_ARG_HANDLE_CHECKED(String, name, 0);
 
   int index;
   PropertyAttributes attributes;
   BindingFlags flags;
   Handle<Object> holder = isolate->context()->Lookup(
       name, FOLLOW_CHAINS, &index, &attributes, &flags);
@@ skipping 196 matching lines @@
 RUNTIME_FUNCTION(Runtime_StoreLookupSlot_Strict) {
   HandleScope scope(isolate);
   DCHECK_EQ(2, args.length());
   CONVERT_ARG_HANDLE_CHECKED(String, name, 0);
   CONVERT_ARG_HANDLE_CHECKED(Object, value, 1);
   RETURN_RESULT_OR_FAILURE(isolate, StoreLookupSlot(name, value, STRICT));
 }
 
 }  // namespace internal
 }  // namespace v8