| // Copyright 2018 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_DEFINITIONS_H_ |
| #define V8_OBJECTS_DEFINITIONS_H_ |
| |
| #include "src/heap-symbols.h" |
| |
| namespace v8 { |
| |
| namespace internal { |
| |
| // All Maps have a field instance_type containing a InstanceType. |
| // It describes the type of the instances. |
| // |
| // As an example, a JavaScript object is a heap object and its map |
| // instance_type is JS_OBJECT_TYPE. |
| // |
| // The names of the string instance types are intended to systematically |
| // mirror their encoding in the instance_type field of the map. The default |
| // encoding is considered TWO_BYTE. It is not mentioned in the name. ONE_BYTE |
| // encoding is mentioned explicitly in the name. Likewise, the default |
| // representation is considered sequential. It is not mentioned in the |
| // name. The other representations (e.g. CONS, EXTERNAL) are explicitly |
| // mentioned. Finally, the string is either a STRING_TYPE (if it is a normal |
| // string) or a INTERNALIZED_STRING_TYPE (if it is a internalized string). |
| // |
| // NOTE: The following things are some that depend on the string types having |
| // instance_types that are less than those of all other types: |
| // HeapObject::Size, HeapObject::IterateBody, the typeof operator, and |
| // Object::IsString. |
| // |
| // NOTE: Everything following JS_VALUE_TYPE is considered a |
| // JSObject for GC purposes. The first four entries here have typeof |
| // 'object', whereas JS_FUNCTION_TYPE has typeof 'function'. |
| // |
| // NOTE: List had to be split into two, because of conditional item(s) from |
| // INTL namespace. They can't just be appended to the end, because of the |
| // checks we do in tests (expecting JS_FUNCTION_TYPE to be last). |
| #define INSTANCE_TYPE_LIST_BEFORE_INTL(V) \ |
| V(INTERNALIZED_STRING_TYPE) \ |
| V(EXTERNAL_INTERNALIZED_STRING_TYPE) \ |
| V(ONE_BYTE_INTERNALIZED_STRING_TYPE) \ |
| V(EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE) \ |
| V(EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE) \ |
| V(SHORT_EXTERNAL_INTERNALIZED_STRING_TYPE) \ |
| V(SHORT_EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE) \ |
| V(SHORT_EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE) \ |
| V(STRING_TYPE) \ |
| V(CONS_STRING_TYPE) \ |
| V(EXTERNAL_STRING_TYPE) \ |
| V(SLICED_STRING_TYPE) \ |
| V(THIN_STRING_TYPE) \ |
| V(ONE_BYTE_STRING_TYPE) \ |
| V(CONS_ONE_BYTE_STRING_TYPE) \ |
| V(EXTERNAL_ONE_BYTE_STRING_TYPE) \ |
| V(SLICED_ONE_BYTE_STRING_TYPE) \ |
| V(THIN_ONE_BYTE_STRING_TYPE) \ |
| V(EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE) \ |
| V(SHORT_EXTERNAL_STRING_TYPE) \ |
| V(SHORT_EXTERNAL_ONE_BYTE_STRING_TYPE) \ |
| V(SHORT_EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE) \ |
| \ |
| V(SYMBOL_TYPE) \ |
| V(HEAP_NUMBER_TYPE) \ |
| V(BIGINT_TYPE) \ |
| V(ODDBALL_TYPE) \ |
| \ |
| V(MAP_TYPE) \ |
| V(CODE_TYPE) \ |
| V(MUTABLE_HEAP_NUMBER_TYPE) \ |
| V(FOREIGN_TYPE) \ |
| V(BYTE_ARRAY_TYPE) \ |
| V(BYTECODE_ARRAY_TYPE) \ |
| V(FREE_SPACE_TYPE) \ |
| \ |
| V(FIXED_INT8_ARRAY_TYPE) \ |
| V(FIXED_UINT8_ARRAY_TYPE) \ |
| V(FIXED_INT16_ARRAY_TYPE) \ |
| V(FIXED_UINT16_ARRAY_TYPE) \ |
| V(FIXED_INT32_ARRAY_TYPE) \ |
| V(FIXED_UINT32_ARRAY_TYPE) \ |
| V(FIXED_FLOAT32_ARRAY_TYPE) \ |
| V(FIXED_FLOAT64_ARRAY_TYPE) \ |
| V(FIXED_UINT8_CLAMPED_ARRAY_TYPE) \ |
| V(FIXED_BIGINT64_ARRAY_TYPE) \ |
| V(FIXED_BIGUINT64_ARRAY_TYPE) \ |
| \ |
| V(FIXED_DOUBLE_ARRAY_TYPE) \ |
| V(FEEDBACK_METADATA_TYPE) \ |
| V(FILLER_TYPE) \ |
| \ |
| V(ACCESS_CHECK_INFO_TYPE) \ |
| V(ACCESSOR_INFO_TYPE) \ |
| V(ACCESSOR_PAIR_TYPE) \ |
| V(ALIASED_ARGUMENTS_ENTRY_TYPE) \ |
| V(ALLOCATION_MEMENTO_TYPE) \ |
| V(ASYNC_GENERATOR_REQUEST_TYPE) \ |
| V(DEBUG_INFO_TYPE) \ |
| V(FUNCTION_TEMPLATE_INFO_TYPE) \ |
| V(INTERCEPTOR_INFO_TYPE) \ |
| V(INTERPRETER_DATA_TYPE) \ |
| V(MODULE_INFO_ENTRY_TYPE) \ |
| V(MODULE_TYPE) \ |
| V(OBJECT_TEMPLATE_INFO_TYPE) \ |
| V(PROMISE_CAPABILITY_TYPE) \ |
| V(PROMISE_REACTION_TYPE) \ |
| V(PROTOTYPE_INFO_TYPE) \ |
| V(SCRIPT_TYPE) \ |
| V(STACK_FRAME_INFO_TYPE) \ |
| V(TUPLE2_TYPE) \ |
| V(TUPLE3_TYPE) \ |
| V(ARRAY_BOILERPLATE_DESCRIPTION_TYPE) \ |
| V(WASM_DEBUG_INFO_TYPE) \ |
| V(WASM_EXPORTED_FUNCTION_DATA_TYPE) \ |
| \ |
| V(CALLABLE_TASK_TYPE) \ |
| V(CALLBACK_TASK_TYPE) \ |
| V(PROMISE_FULFILL_REACTION_JOB_TASK_TYPE) \ |
| V(PROMISE_REJECT_REACTION_JOB_TASK_TYPE) \ |
| V(PROMISE_RESOLVE_THENABLE_JOB_TASK_TYPE) \ |
| \ |
| V(ALLOCATION_SITE_TYPE) \ |
| \ |
| V(FIXED_ARRAY_TYPE) \ |
| V(OBJECT_BOILERPLATE_DESCRIPTION_TYPE) \ |
| V(HASH_TABLE_TYPE) \ |
| V(ORDERED_HASH_MAP_TYPE) \ |
| V(ORDERED_HASH_SET_TYPE) \ |
| V(NAME_DICTIONARY_TYPE) \ |
| V(GLOBAL_DICTIONARY_TYPE) \ |
| V(NUMBER_DICTIONARY_TYPE) \ |
| V(SIMPLE_NUMBER_DICTIONARY_TYPE) \ |
| V(STRING_TABLE_TYPE) \ |
| V(EPHEMERON_HASH_TABLE_TYPE) \ |
| V(SCOPE_INFO_TYPE) \ |
| V(SCRIPT_CONTEXT_TABLE_TYPE) \ |
| \ |
| V(BLOCK_CONTEXT_TYPE) \ |
| V(CATCH_CONTEXT_TYPE) \ |
| V(DEBUG_EVALUATE_CONTEXT_TYPE) \ |
| V(EVAL_CONTEXT_TYPE) \ |
| V(FUNCTION_CONTEXT_TYPE) \ |
| V(MODULE_CONTEXT_TYPE) \ |
| V(NATIVE_CONTEXT_TYPE) \ |
| V(SCRIPT_CONTEXT_TYPE) \ |
| V(WITH_CONTEXT_TYPE) \ |
| \ |
| V(WEAK_FIXED_ARRAY_TYPE) \ |
| V(DESCRIPTOR_ARRAY_TYPE) \ |
| V(TRANSITION_ARRAY_TYPE) \ |
| \ |
| V(CALL_HANDLER_INFO_TYPE) \ |
| V(CELL_TYPE) \ |
| V(CODE_DATA_CONTAINER_TYPE) \ |
| V(FEEDBACK_CELL_TYPE) \ |
| V(FEEDBACK_VECTOR_TYPE) \ |
| V(LOAD_HANDLER_TYPE) \ |
| V(PRE_PARSED_SCOPE_DATA_TYPE) \ |
| V(PROPERTY_ARRAY_TYPE) \ |
| V(PROPERTY_CELL_TYPE) \ |
| V(SHARED_FUNCTION_INFO_TYPE) \ |
| V(SMALL_ORDERED_HASH_MAP_TYPE) \ |
| V(SMALL_ORDERED_HASH_SET_TYPE) \ |
| V(STORE_HANDLER_TYPE) \ |
| V(UNCOMPILED_DATA_WITHOUT_PRE_PARSED_SCOPE_TYPE) \ |
| V(UNCOMPILED_DATA_WITH_PRE_PARSED_SCOPE_TYPE) \ |
| V(WEAK_CELL_TYPE) \ |
| V(WEAK_ARRAY_LIST_TYPE) \ |
| \ |
| V(JS_PROXY_TYPE) \ |
| V(JS_GLOBAL_OBJECT_TYPE) \ |
| V(JS_GLOBAL_PROXY_TYPE) \ |
| V(JS_MODULE_NAMESPACE_TYPE) \ |
| V(JS_SPECIAL_API_OBJECT_TYPE) \ |
| V(JS_VALUE_TYPE) \ |
| V(JS_API_OBJECT_TYPE) \ |
| V(JS_OBJECT_TYPE) \ |
| \ |
| V(JS_ARGUMENTS_TYPE) \ |
| V(JS_ARRAY_BUFFER_TYPE) \ |
| V(JS_ARRAY_ITERATOR_TYPE) \ |
| V(JS_ARRAY_TYPE) \ |
| V(JS_ASYNC_FROM_SYNC_ITERATOR_TYPE) \ |
| V(JS_ASYNC_GENERATOR_OBJECT_TYPE) \ |
| V(JS_CONTEXT_EXTENSION_OBJECT_TYPE) \ |
| V(JS_DATE_TYPE) \ |
| V(JS_ERROR_TYPE) \ |
| V(JS_GENERATOR_OBJECT_TYPE) \ |
| V(JS_MAP_TYPE) \ |
| V(JS_MAP_KEY_ITERATOR_TYPE) \ |
| V(JS_MAP_KEY_VALUE_ITERATOR_TYPE) \ |
| V(JS_MAP_VALUE_ITERATOR_TYPE) \ |
| V(JS_MESSAGE_OBJECT_TYPE) \ |
| V(JS_PROMISE_TYPE) \ |
| V(JS_REGEXP_TYPE) \ |
| V(JS_REGEXP_STRING_ITERATOR_TYPE) \ |
| V(JS_SET_TYPE) \ |
| V(JS_SET_KEY_VALUE_ITERATOR_TYPE) \ |
| V(JS_SET_VALUE_ITERATOR_TYPE) \ |
| V(JS_STRING_ITERATOR_TYPE) \ |
| V(JS_WEAK_MAP_TYPE) \ |
| V(JS_WEAK_SET_TYPE) \ |
| V(JS_TYPED_ARRAY_TYPE) \ |
| V(JS_DATA_VIEW_TYPE) |
| |
| #define INSTANCE_TYPE_LIST_AFTER_INTL(V) \ |
| V(WASM_GLOBAL_TYPE) \ |
| V(WASM_INSTANCE_TYPE) \ |
| V(WASM_MEMORY_TYPE) \ |
| V(WASM_MODULE_TYPE) \ |
| V(WASM_TABLE_TYPE) \ |
| V(JS_BOUND_FUNCTION_TYPE) \ |
| V(JS_FUNCTION_TYPE) |
| |
| #ifdef V8_INTL_SUPPORT |
| #define INSTANCE_TYPE_LIST(V) \ |
| INSTANCE_TYPE_LIST_BEFORE_INTL(V) \ |
| V(JS_INTL_COLLATOR_TYPE) \ |
| V(JS_INTL_LIST_FORMAT_TYPE) \ |
| V(JS_INTL_LOCALE_TYPE) \ |
| V(JS_INTL_PLURAL_RULES_TYPE) \ |
| V(JS_INTL_RELATIVE_TIME_FORMAT_TYPE) \ |
| INSTANCE_TYPE_LIST_AFTER_INTL(V) |
| #else |
| #define INSTANCE_TYPE_LIST(V) \ |
| INSTANCE_TYPE_LIST_BEFORE_INTL(V) \ |
| INSTANCE_TYPE_LIST_AFTER_INTL(V) |
| #endif // V8_INTL_SUPPORT |
| |
| // Since string types are not consecutive, this macro is used to |
| // iterate over them. |
| #define STRING_TYPE_LIST(V) \ |
| V(STRING_TYPE, kVariableSizeSentinel, string, String) \ |
| V(ONE_BYTE_STRING_TYPE, kVariableSizeSentinel, one_byte_string, \ |
| OneByteString) \ |
| V(CONS_STRING_TYPE, ConsString::kSize, cons_string, ConsString) \ |
| V(CONS_ONE_BYTE_STRING_TYPE, ConsString::kSize, cons_one_byte_string, \ |
| ConsOneByteString) \ |
| V(SLICED_STRING_TYPE, SlicedString::kSize, sliced_string, SlicedString) \ |
| V(SLICED_ONE_BYTE_STRING_TYPE, SlicedString::kSize, sliced_one_byte_string, \ |
| SlicedOneByteString) \ |
| V(EXTERNAL_STRING_TYPE, ExternalTwoByteString::kSize, external_string, \ |
| ExternalString) \ |
| V(EXTERNAL_ONE_BYTE_STRING_TYPE, ExternalOneByteString::kSize, \ |
| external_one_byte_string, ExternalOneByteString) \ |
| V(EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE, ExternalTwoByteString::kSize, \ |
| external_string_with_one_byte_data, ExternalStringWithOneByteData) \ |
| V(SHORT_EXTERNAL_STRING_TYPE, ExternalTwoByteString::kShortSize, \ |
| short_external_string, ShortExternalString) \ |
| V(SHORT_EXTERNAL_ONE_BYTE_STRING_TYPE, ExternalOneByteString::kShortSize, \ |
| short_external_one_byte_string, ShortExternalOneByteString) \ |
| V(SHORT_EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE, \ |
| ExternalTwoByteString::kShortSize, \ |
| short_external_string_with_one_byte_data, \ |
| ShortExternalStringWithOneByteData) \ |
| \ |
| V(INTERNALIZED_STRING_TYPE, kVariableSizeSentinel, internalized_string, \ |
| InternalizedString) \ |
| V(ONE_BYTE_INTERNALIZED_STRING_TYPE, kVariableSizeSentinel, \ |
| one_byte_internalized_string, OneByteInternalizedString) \ |
| V(EXTERNAL_INTERNALIZED_STRING_TYPE, ExternalTwoByteString::kSize, \ |
| external_internalized_string, ExternalInternalizedString) \ |
| V(EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE, ExternalOneByteString::kSize, \ |
| external_one_byte_internalized_string, ExternalOneByteInternalizedString) \ |
| V(EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE, \ |
| ExternalTwoByteString::kSize, \ |
| external_internalized_string_with_one_byte_data, \ |
| ExternalInternalizedStringWithOneByteData) \ |
| V(SHORT_EXTERNAL_INTERNALIZED_STRING_TYPE, \ |
| ExternalTwoByteString::kShortSize, short_external_internalized_string, \ |
| ShortExternalInternalizedString) \ |
| V(SHORT_EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE, \ |
| ExternalOneByteString::kShortSize, \ |
| short_external_one_byte_internalized_string, \ |
| ShortExternalOneByteInternalizedString) \ |
| V(SHORT_EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE, \ |
| ExternalTwoByteString::kShortSize, \ |
| short_external_internalized_string_with_one_byte_data, \ |
| ShortExternalInternalizedStringWithOneByteData) \ |
| V(THIN_STRING_TYPE, ThinString::kSize, thin_string, ThinString) \ |
| V(THIN_ONE_BYTE_STRING_TYPE, ThinString::kSize, thin_one_byte_string, \ |
| ThinOneByteString) |
| |
| // A struct is a simple object a set of object-valued fields. Including an |
| // object type in this causes the compiler to generate most of the boilerplate |
| // code for the class including allocation and garbage collection routines, |
| // casts and predicates. All you need to define is the class, methods and |
| // object verification routines. Easy, no? |
| // |
| // Note that for subtle reasons related to the ordering or numerical values of |
| // type tags, elements in this list have to be added to the INSTANCE_TYPE_LIST |
| // manually. |
| #define STRUCT_LIST(V) \ |
| V(ACCESS_CHECK_INFO, AccessCheckInfo, access_check_info) \ |
| V(ACCESSOR_INFO, AccessorInfo, accessor_info) \ |
| V(ACCESSOR_PAIR, AccessorPair, accessor_pair) \ |
| V(ALIASED_ARGUMENTS_ENTRY, AliasedArgumentsEntry, aliased_arguments_entry) \ |
| V(ALLOCATION_MEMENTO, AllocationMemento, allocation_memento) \ |
| V(ASYNC_GENERATOR_REQUEST, AsyncGeneratorRequest, async_generator_request) \ |
| V(DEBUG_INFO, DebugInfo, debug_info) \ |
| V(FUNCTION_TEMPLATE_INFO, FunctionTemplateInfo, function_template_info) \ |
| V(INTERCEPTOR_INFO, InterceptorInfo, interceptor_info) \ |
| V(INTERPRETER_DATA, InterpreterData, interpreter_data) \ |
| V(MODULE_INFO_ENTRY, ModuleInfoEntry, module_info_entry) \ |
| V(MODULE, Module, module) \ |
| V(OBJECT_TEMPLATE_INFO, ObjectTemplateInfo, object_template_info) \ |
| V(PROMISE_CAPABILITY, PromiseCapability, promise_capability) \ |
| V(PROMISE_REACTION, PromiseReaction, promise_reaction) \ |
| V(PROTOTYPE_INFO, PrototypeInfo, prototype_info) \ |
| V(SCRIPT, Script, script) \ |
| V(STACK_FRAME_INFO, StackFrameInfo, stack_frame_info) \ |
| V(TUPLE2, Tuple2, tuple2) \ |
| V(TUPLE3, Tuple3, tuple3) \ |
| V(ARRAY_BOILERPLATE_DESCRIPTION, ArrayBoilerplateDescription, \ |
| array_boilerplate_description) \ |
| V(WASM_DEBUG_INFO, WasmDebugInfo, wasm_debug_info) \ |
| V(WASM_EXPORTED_FUNCTION_DATA, WasmExportedFunctionData, \ |
| wasm_exported_function_data) \ |
| V(CALLABLE_TASK, CallableTask, callable_task) \ |
| V(CALLBACK_TASK, CallbackTask, callback_task) \ |
| V(PROMISE_FULFILL_REACTION_JOB_TASK, PromiseFulfillReactionJobTask, \ |
| promise_fulfill_reaction_job_task) \ |
| V(PROMISE_REJECT_REACTION_JOB_TASK, PromiseRejectReactionJobTask, \ |
| promise_reject_reaction_job_task) \ |
| V(PROMISE_RESOLVE_THENABLE_JOB_TASK, PromiseResolveThenableJobTask, \ |
| promise_resolve_thenable_job_task) |
| |
| #define ALLOCATION_SITE_LIST(V) \ |
| V(ALLOCATION_SITE, AllocationSite, WithWeakNext, allocation_site) \ |
| V(ALLOCATION_SITE, AllocationSite, WithoutWeakNext, \ |
| allocation_site_without_weaknext) |
| |
| #define DATA_HANDLER_LIST(V) \ |
| V(LOAD_HANDLER, LoadHandler, 1, load_handler1) \ |
| V(LOAD_HANDLER, LoadHandler, 2, load_handler2) \ |
| V(LOAD_HANDLER, LoadHandler, 3, load_handler3) \ |
| V(STORE_HANDLER, StoreHandler, 0, store_handler0) \ |
| V(STORE_HANDLER, StoreHandler, 1, store_handler1) \ |
| V(STORE_HANDLER, StoreHandler, 2, store_handler2) \ |
| V(STORE_HANDLER, StoreHandler, 3, store_handler3) |
| |
| } // namespace internal |
| } // namespace v8 |
| |
| #endif // V8_OBJECTS_DEFINITIONS_H_ |
