[modules] Turn JSModule into Module.

src/objects.h

 // Copyright 2015 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.
 
 #ifndef V8_OBJECTS_H_
 #define V8_OBJECTS_H_
 
 #include <iosfwd>
 #include <memory>
 
@@ skipping 52 matching lines @@
 //           - JSWeakMap
 //           - JSWeakSet
 //         - JSRegExp
 //         - JSFunction
 //         - JSGeneratorObject
 //         - JSGlobalObject
 //         - JSGlobalProxy
 //         - JSValue
 //           - JSDate
 //         - JSMessageObject
-//         - JSModule
 //       - JSProxy
 //     - FixedArrayBase
 //       - ByteArray
 //       - BytecodeArray
 //       - FixedArray
 //         - DescriptorArray
 //         - FrameArray
 //         - LiteralsArray
 //         - HashTable
 //           - Dictionary
@@ skipping 63 matching lines @@
 //       - InterceptorInfo
 //       - CallHandlerInfo
 //       - TemplateInfo
 //         - FunctionTemplateInfo
 //         - ObjectTemplateInfo
 //       - Script
 //       - DebugInfo
 //       - BreakPointInfo
 //       - CodeCache
 //       - PrototypeInfo
+//       - Module
 //     - WeakCell
 //
 // Formats of Object*:
 //  Smi:        [31 bit signed int] 0
 //  HeapObject: [32 bit direct pointer] (4 byte aligned) | 01
 
 namespace v8 {
 namespace internal {
 
 enum KeyedAccessStoreMode {
@@ skipping 224 matching lines @@
   V(SIGNATURE_INFO_TYPE)                                        \
   V(TYPE_SWITCH_INFO_TYPE)                                      \
   V(ALLOCATION_MEMENTO_TYPE)                                    \
   V(ALLOCATION_SITE_TYPE)                                       \
   V(SCRIPT_TYPE)                                                \
   V(TYPE_FEEDBACK_INFO_TYPE)                                    \
   V(ALIASED_ARGUMENTS_ENTRY_TYPE)                               \
   V(BOX_TYPE)                                                   \
   V(PROTOTYPE_INFO_TYPE)                                        \
   V(CONTEXT_EXTENSION_TYPE)                                     \
+  V(MODULE_TYPE)                                                \
                                                                 \
   V(FIXED_ARRAY_TYPE)                                           \
   V(FIXED_DOUBLE_ARRAY_TYPE)                                    \
   V(SHARED_FUNCTION_INFO_TYPE)                                  \
   V(WEAK_CELL_TYPE)                                             \
   V(TRANSITION_ARRAY_TYPE)                                      \
                                                                 \
   V(JS_MESSAGE_OBJECT_TYPE)                                     \
                                                                 \
   V(JS_VALUE_TYPE)                                              \
   V(JS_DATE_TYPE)                                               \
   V(JS_OBJECT_TYPE)                                             \
   V(JS_ARGUMENTS_TYPE)                                          \
   V(JS_CONTEXT_EXTENSION_OBJECT_TYPE)                           \
   V(JS_GENERATOR_OBJECT_TYPE)                                   \
-  V(JS_MODULE_TYPE)                                             \
   V(JS_GLOBAL_OBJECT_TYPE)                                      \
   V(JS_GLOBAL_PROXY_TYPE)                                       \
   V(JS_API_OBJECT_TYPE)                                         \
   V(JS_SPECIAL_API_OBJECT_TYPE)                                 \
   V(JS_ARRAY_TYPE)                                              \
   V(JS_ARRAY_BUFFER_TYPE)                                       \
   V(JS_TYPED_ARRAY_TYPE)                                        \
   V(JS_DATA_VIEW_TYPE)                                          \
   V(JS_PROXY_TYPE)                                              \
   V(JS_SET_TYPE)                                                \
@@ skipping 81 matching lines @@
   V(FUNCTION_TEMPLATE_INFO, FunctionTemplateInfo, function_template_info)    \
   V(OBJECT_TEMPLATE_INFO, ObjectTemplateInfo, object_template_info)          \
   V(SCRIPT, Script, script)                                                  \
   V(ALLOCATION_SITE, AllocationSite, allocation_site)                        \
   V(ALLOCATION_MEMENTO, AllocationMemento, allocation_memento)               \
   V(TYPE_FEEDBACK_INFO, TypeFeedbackInfo, type_feedback_info)                \
   V(ALIASED_ARGUMENTS_ENTRY, AliasedArgumentsEntry, aliased_arguments_entry) \
   V(DEBUG_INFO, DebugInfo, debug_info)                                       \
   V(BREAK_POINT_INFO, BreakPointInfo, break_point_info)                      \
   V(PROTOTYPE_INFO, PrototypeInfo, prototype_info)                           \
+  V(MODULE, Module, module)                                                  \
   V(CONTEXT_EXTENSION, ContextExtension, context_extension)
 
 // We use the full 8 bits of the instance_type field to encode heap object
 // instance types.  The high-order bit (bit 7) is set if the object is not a
 // string, and cleared if it is a string.
 const uint32_t kIsNotStringMask = 0x80;
 const uint32_t kStringTag = 0x0;
 const uint32_t kNotStringTag = 0x80;
 
 // Bit 6 indicates that the object is an internalized string (if set) or not.
@@ skipping 155 matching lines @@
   DEBUG_INFO_TYPE,
   BREAK_POINT_INFO_TYPE,
   FIXED_ARRAY_TYPE,
   SHARED_FUNCTION_INFO_TYPE,
   CELL_TYPE,
   WEAK_CELL_TYPE,
   TRANSITION_ARRAY_TYPE,
   PROPERTY_CELL_TYPE,
   PROTOTYPE_INFO_TYPE,
   CONTEXT_EXTENSION_TYPE,
+  MODULE_TYPE,
 
   // All the following types are subtypes of JSReceiver, which corresponds to
   // objects in the JS sense. The first and the last type in this range are
   // the two forms of function. This organization enables using the same
   // compares for checking the JS_RECEIVER and the NONCALLABLE_JS_OBJECT range.
   JS_PROXY_TYPE,          // FIRST_JS_RECEIVER_TYPE
   JS_GLOBAL_OBJECT_TYPE,  // FIRST_JS_OBJECT_TYPE
   JS_GLOBAL_PROXY_TYPE,
   // Like JS_API_OBJECT_TYPE, but requires access checks and/or has
   // interceptors.
   JS_SPECIAL_API_OBJECT_TYPE,  // LAST_SPECIAL_RECEIVER_TYPE
   JS_VALUE_TYPE,               // LAST_CUSTOM_ELEMENTS_RECEIVER
   JS_MESSAGE_OBJECT_TYPE,
   JS_DATE_TYPE,
   // Like JS_OBJECT_TYPE, but created from API function.
   JS_API_OBJECT_TYPE,
   JS_OBJECT_TYPE,
   JS_ARGUMENTS_TYPE,
   JS_CONTEXT_EXTENSION_OBJECT_TYPE,
   JS_GENERATOR_OBJECT_TYPE,
-  JS_MODULE_TYPE,
   JS_ARRAY_TYPE,
   JS_ARRAY_BUFFER_TYPE,
   JS_TYPED_ARRAY_TYPE,
   JS_DATA_VIEW_TYPE,
   JS_SET_TYPE,
   JS_MAP_TYPE,
   JS_SET_ITERATOR_TYPE,
   JS_MAP_ITERATOR_TYPE,
   JS_WEAK_MAP_TYPE,
   JS_WEAK_SET_TYPE,
@@ skipping 232 matching lines @@
   V(FixedFloat32Array)           \
   V(FixedFloat64Array)           \
   V(FixedUint8ClampedArray)      \
   V(ByteArray)                   \
   V(BytecodeArray)               \
   V(FreeSpace)                   \
   V(JSReceiver)                  \
   V(JSObject)                    \
   V(JSContextExtensionObject)    \
   V(JSGeneratorObject)           \
-  V(JSModule)                    \
   V(Map)                         \
   V(DescriptorArray)             \
   V(FrameArray)                  \
   V(TransitionArray)             \
   V(LiteralsArray)               \
   V(TypeFeedbackMetadata)        \
   V(TypeFeedbackVector)          \
   V(DeoptimizationInputData)     \
   V(DeoptimizationOutputData)    \
   V(DependentCode)               \
@@ skipping 5393 matching lines @@
   inline bool CanTransition();
 
   inline bool IsBooleanMap();
   inline bool IsPrimitiveMap();
   inline bool IsJSReceiverMap();
   inline bool IsJSObjectMap();
   inline bool IsJSArrayMap();
   inline bool IsJSFunctionMap();
   inline bool IsStringMap();
   inline bool IsJSProxyMap();
-  inline bool IsJSModuleMap();
+  inline bool IsModuleMap();
   inline bool IsJSGlobalProxyMap();
   inline bool IsJSGlobalObjectMap();
   inline bool IsJSTypedArrayMap();
   inline bool IsJSDataViewMap();
 
   inline bool CanOmitMapChecks();
 
   static void AddDependentCode(Handle<Map> map,
                                DependentCode::DependencyGroup group,
                                Handle<Code> code);
@@ skipping 1457 matching lines @@
   static const int kInputOrDebugPosOffset = kReceiverOffset + kPointerSize;
   static const int kResumeModeOffset = kInputOrDebugPosOffset + kPointerSize;
   static const int kContinuationOffset = kResumeModeOffset + kPointerSize;
   static const int kOperandStackOffset = kContinuationOffset + kPointerSize;
   static const int kSize = kOperandStackOffset + kPointerSize;
 
  private:
   DISALLOW_IMPLICIT_CONSTRUCTORS(JSGeneratorObject);
 };
 
-// A JSModule object is a mapping from export names to cells
+// A Module object is a mapping from export names to cells
 // This is still very much in flux.
-class JSModule : public JSObject {
+class Module : public Struct {
  public:
-  DECLARE_CAST(JSModule)
-  DECLARE_VERIFIER(JSModule)
+  DECLARE_CAST(Module)
+  DECLARE_VERIFIER(Module)
+  DECLARE_PRINTER(Module)
 
-  static const int kSize = JSObject::kHeaderSize;
+  DECL_ACCESSORS(exports, ObjectHashTable)
 
-  static void CreateExport(Handle<JSModule> module, Handle<String> name);
-  static void StoreExport(Handle<JSModule> module, Handle<String> name,
+  static void CreateExport(Handle<Module> module, Handle<String> name);
+  static void StoreExport(Handle<Module> module, Handle<String> name,
                           Handle<Object> value);
-  static Handle<Object> LoadExport(Handle<JSModule> module,
-                                   Handle<String> name);
+  static Handle<Object> LoadExport(Handle<Module> module, Handle<String> name);
+
+  static const int kExportsOffset = HeapObject::kHeaderSize;
+  static const int kSize = kExportsOffset + kPointerSize;
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(Module);
 };
 
 // JSBoundFunction describes a bound function exotic object.
 class JSBoundFunction : public JSObject {
  public:
   // [bound_target_function]: The wrapped function object.
   DECL_ACCESSORS(bound_target_function, JSReceiver)
 
   // [bound_this]: The value that is always passed as the this value when
   // calling the wrapped function.
@@ skipping 3400 matching lines @@
     }
     return value;
   }
 };
 
 
 }  // NOLINT, false-positive due to second-order macros.
 }  // NOLINT, false-positive due to second-order macros.
 
 #endif  // V8_OBJECTS_H_