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// Copyright 2017 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_HEAP_FACTORY_INL_H_ #define V8_HEAP_FACTORY_INL_H_ #include "src/heap/factory.h" // Clients of this interface shouldn't depend on lots of heap internals. // Do not include anything from src/heap here! // TODO(all): Remove the heap-inl.h include below. #include "src/execution/isolate-inl.h" #include "src/handles/handles-inl.h" #include "src/heap/factory-base-inl.h" #include "src/heap/heap-inl.h" // For MaxNumberToStringCacheSize. #include "src/objects/feedback-cell.h" #include "src/objects/heap-number-inl.h" #include "src/objects/objects-inl.h" #include "src/objects/oddball.h" #include "src/objects/string-inl.h" #include "src/objects/string-table-inl.h" #include "src/strings/string-hasher.h" namespace v8 { namespace internal { #define ROOT_ACCESSOR(Type, name, CamelName) \ Handle<Type> Factory::name() { \ return Handle<Type>(&isolate()->roots_table()[RootIndex::k##CamelName]); \ } MUTABLE_ROOT_LIST(ROOT_ACCESSOR) #undef ROOT_ACCESSOR Handle<String> Factory::InternalizeString(Handle<String> string) { if (IsInternalizedString(*string)) return string; return isolate()->string_table()->LookupString(isolate(), string); } Handle<Name> Factory::InternalizeName(Handle<Name> name) { if (IsUniqueName(*name)) return name; return isolate()->string_table()->LookupString(isolate(), Handle<String>::cast(name)); } template <size_t N> Handle<String> Factory::NewStringFromStaticChars(const char (&str)[N], AllocationType allocation) { DCHECK_EQ(N, strlen(str) + 1); return NewStringFromOneByte(base::StaticOneByteVector(str), allocation) .ToHandleChecked(); } Handle<String> Factory::NewStringFromAsciiChecked(const char* str, AllocationType allocation) { return NewStringFromOneByte(base::OneByteVector(str), allocation) .ToHandleChecked(); } Handle<String> Factory::NewSubString(Handle<String> str, int begin, int end) { if (begin == 0 && end == str->length()) return str; return NewProperSubString(str, begin, end); } Handle<JSArray> Factory::NewJSArrayWithElements(Handle<FixedArrayBase> elements, ElementsKind elements_kind, AllocationType allocation) { return NewJSArrayWithElements(elements, elements_kind, elements->length(), allocation); } Handle<JSObject> Factory::NewFastOrSlowJSObjectFromMap( Handle<Map> map, int number_of_slow_properties, AllocationType allocation, Handle<AllocationSite> allocation_site) { return map->is_dictionary_map() ? NewSlowJSObjectFromMap(map, number_of_slow_properties, allocation, allocation_site) : NewJSObjectFromMap(map, allocation, allocation_site); } Handle<JSObject> Factory::NewFastOrSlowJSObjectFromMap(Handle<Map> map) { return NewFastOrSlowJSObjectFromMap( map, V8_ENABLE_SWISS_NAME_DICTIONARY_BOOL ? SwissNameDictionary::kInitialCapacity : NameDictionary::kInitialCapacity); } Handle<Object> Factory::NewURIError() { return NewError(isolate()->uri_error_function(), MessageTemplate::kURIMalformed); } ReadOnlyRoots Factory::read_only_roots() const { return ReadOnlyRoots(isolate()); } HeapAllocator* Factory::allocator() const { return isolate()->heap()->allocator(); } Factory::CodeBuilder& Factory::CodeBuilder::set_interpreter_data( Handle<HeapObject> interpreter_data) { // This DCHECK requires this function to be in -inl.h. DCHECK(IsInterpreterData(*interpreter_data) || IsBytecodeArray(*interpreter_data)); interpreter_data_ = interpreter_data; return *this; } void Factory::NumberToStringCacheSet(Handle<Object> number, int hash, Handle<String> js_string) { if (!IsUndefined(number_string_cache()->get(hash * 2), isolate()) && !v8_flags.optimize_for_size) { int full_size = isolate()->heap()->MaxNumberToStringCacheSize(); if (number_string_cache()->length() != full_size) { Handle<FixedArray> new_cache = NewFixedArray(full_size, AllocationType::kOld); isolate()->heap()->set_number_string_cache(*new_cache); return; } } DisallowGarbageCollection no_gc; Tagged<FixedArray> cache = *number_string_cache(); cache->set(hash * 2, *number); cache->set(hash * 2 + 1, *js_string); } Handle<Object> Factory::NumberToStringCacheGet(Tagged<Object> number, int hash) { DisallowGarbageCollection no_gc; Tagged<FixedArray> cache = *number_string_cache(); Tagged<Object> key = cache->get(hash * 2); if (key == number || (IsHeapNumber(key) && IsHeapNumber(number) && Object::Number(key) == Object::Number(number))) { return Handle<String>(String::cast(cache->get(hash * 2 + 1)), isolate()); } return undefined_value(); } } // namespace internal } // namespace v8 #endif // V8_HEAP_FACTORY_INL_H_