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serenity/Userland/Libraries/LibJS/Forward.h
Andreas Kling 4699c81fc1 LibJS: Stop converting between Object <-> IteratorRecord all the time 
This patch makes IteratorRecord an Object. Although it's not exposed to
author code, this does allow us to store it in a VM register.

Now that we can store it in a VM register, we don't need to convert it
back and forth between IteratorRecord and Object when accessing it from
bytecode.

The big win here is avoiding 3 [[Get]] accesses on every iteration step
of for..of loops. There are also a bunch of smaller efficiencies gained.

20% speed-up on this microbenchmark:

    function go(a) {
        for (const p of a) {
        }
    }
    const a = [];
    a.length = 1_000_000;
    go(a);
2023-12-07 14:06:34 +01:00

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/*
* Copyright (c) 2020-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2020-2022, Linus Groh <linusg@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Concepts.h>
#include <AK/Types.h>
#define JS_DECLARE_NATIVE_FUNCTION(name) \
static JS::ThrowCompletionOr<JS::Value> name(JS::VM&)
#define JS_DEFINE_NATIVE_FUNCTION(name) \
JS::ThrowCompletionOr<JS::Value> name([[maybe_unused]] JS::VM& vm)
// NOTE: Proxy is not included here as it doesn't have a prototype - m_proxy_constructor is initialized separately.
#define JS_ENUMERATE_NATIVE_OBJECTS_EXCLUDING_TEMPLATES \
__JS_ENUMERATE(AggregateError, aggregate_error, AggregateErrorPrototype, AggregateErrorConstructor, void) \
__JS_ENUMERATE(Array, array, ArrayPrototype, ArrayConstructor, void) \
__JS_ENUMERATE(ArrayBuffer, array_buffer, ArrayBufferPrototype, ArrayBufferConstructor, void) \
__JS_ENUMERATE(AsyncFunction, async_function, AsyncFunctionPrototype, AsyncFunctionConstructor, void) \
__JS_ENUMERATE(AsyncGeneratorFunction, async_generator_function, AsyncGeneratorFunctionPrototype, AsyncGeneratorFunctionConstructor, void) \
__JS_ENUMERATE(BigIntObject, bigint, BigIntPrototype, BigIntConstructor, void) \
__JS_ENUMERATE(BooleanObject, boolean, BooleanPrototype, BooleanConstructor, void) \
__JS_ENUMERATE(DataView, data_view, DataViewPrototype, DataViewConstructor, void) \
__JS_ENUMERATE(Date, date, DatePrototype, DateConstructor, void) \
__JS_ENUMERATE(DisposableStack, disposable_stack, DisposableStackPrototype, DisposableStackConstructor, void) \
__JS_ENUMERATE(Error, error, ErrorPrototype, ErrorConstructor, void) \
__JS_ENUMERATE(FinalizationRegistry, finalization_registry, FinalizationRegistryPrototype, FinalizationRegistryConstructor, void) \
__JS_ENUMERATE(FunctionObject, function, FunctionPrototype, FunctionConstructor, void) \
__JS_ENUMERATE(GeneratorFunction, generator_function, GeneratorFunctionPrototype, GeneratorFunctionConstructor, void) \
__JS_ENUMERATE(Iterator, iterator, IteratorPrototype, IteratorConstructor, void) \
__JS_ENUMERATE(Map, map, MapPrototype, MapConstructor, void) \
__JS_ENUMERATE(NumberObject, number, NumberPrototype, NumberConstructor, void) \
__JS_ENUMERATE(Object, object, ObjectPrototype, ObjectConstructor, void) \
__JS_ENUMERATE(Promise, promise, PromisePrototype, PromiseConstructor, void) \
__JS_ENUMERATE(RegExpObject, regexp, RegExpPrototype, RegExpConstructor, void) \
__JS_ENUMERATE(Set, set, SetPrototype, SetConstructor, void) \
__JS_ENUMERATE(ShadowRealm, shadow_realm, ShadowRealmPrototype, ShadowRealmConstructor, void) \
__JS_ENUMERATE(SharedArrayBuffer, shared_array_buffer, SharedArrayBufferPrototype, SharedArrayBufferConstructor, void) \
__JS_ENUMERATE(StringObject, string, StringPrototype, StringConstructor, void) \
__JS_ENUMERATE(SuppressedError, suppressed_error, SuppressedErrorPrototype, SuppressedErrorConstructor, void) \
__JS_ENUMERATE(SymbolObject, symbol, SymbolPrototype, SymbolConstructor, void) \
__JS_ENUMERATE(WeakMap, weak_map, WeakMapPrototype, WeakMapConstructor, void) \
__JS_ENUMERATE(WeakRef, weak_ref, WeakRefPrototype, WeakRefConstructor, void) \
__JS_ENUMERATE(WeakSet, weak_set, WeakSetPrototype, WeakSetConstructor, void)
#define JS_ENUMERATE_NATIVE_OBJECTS \
JS_ENUMERATE_NATIVE_OBJECTS_EXCLUDING_TEMPLATES \
__JS_ENUMERATE(TypedArray, typed_array, TypedArrayPrototype, TypedArrayConstructor, void)
#define JS_ENUMERATE_NATIVE_ERRORS \
__JS_ENUMERATE(EvalError, eval_error, EvalErrorPrototype, EvalErrorConstructor, void) \
__JS_ENUMERATE(InternalError, internal_error, InternalErrorPrototype, InternalErrorConstructor, void) \
__JS_ENUMERATE(RangeError, range_error, RangeErrorPrototype, RangeErrorConstructor, void) \
__JS_ENUMERATE(ReferenceError, reference_error, ReferenceErrorPrototype, ReferenceErrorConstructor, void) \
__JS_ENUMERATE(SyntaxError, syntax_error, SyntaxErrorPrototype, SyntaxErrorConstructor, void) \
__JS_ENUMERATE(TypeError, type_error, TypeErrorPrototype, TypeErrorConstructor, void) \
__JS_ENUMERATE(URIError, uri_error, URIErrorPrototype, URIErrorConstructor, void)
#define JS_ENUMERATE_TYPED_ARRAYS \
__JS_ENUMERATE(Uint8Array, uint8_array, Uint8ArrayPrototype, Uint8ArrayConstructor, u8) \
__JS_ENUMERATE(Uint8ClampedArray, uint8_clamped_array, Uint8ClampedArrayPrototype, Uint8ClampedArrayConstructor, ClampedU8) \
__JS_ENUMERATE(Uint16Array, uint16_array, Uint16ArrayPrototype, Uint16ArrayConstructor, u16) \
__JS_ENUMERATE(Uint32Array, uint32_array, Uint32ArrayPrototype, Uint32ArrayConstructor, u32) \
__JS_ENUMERATE(BigUint64Array, big_uint64_array, BigUint64ArrayPrototype, BigUint64ArrayConstructor, u64) \
__JS_ENUMERATE(Int8Array, int8_array, Int8ArrayPrototype, Int8ArrayConstructor, i8) \
__JS_ENUMERATE(Int16Array, int16_array, Int16ArrayPrototype, Int16ArrayConstructor, i16) \
__JS_ENUMERATE(Int32Array, int32_array, Int32ArrayPrototype, Int32ArrayConstructor, i32) \
__JS_ENUMERATE(BigInt64Array, big_int64_array, BigInt64ArrayPrototype, BigInt64ArrayConstructor, i64) \
__JS_ENUMERATE(Float32Array, float32_array, Float32ArrayPrototype, Float32ArrayConstructor, float) \
__JS_ENUMERATE(Float64Array, float64_array, Float64ArrayPrototype, Float64ArrayConstructor, double)
#define JS_ENUMERATE_INTL_OBJECTS \
__JS_ENUMERATE(Collator, collator, CollatorPrototype, CollatorConstructor) \
__JS_ENUMERATE(DateTimeFormat, date_time_format, DateTimeFormatPrototype, DateTimeFormatConstructor) \
__JS_ENUMERATE(DisplayNames, display_names, DisplayNamesPrototype, DisplayNamesConstructor) \
__JS_ENUMERATE(DurationFormat, duration_format, DurationFormatPrototype, DurationFormatConstructor) \
__JS_ENUMERATE(ListFormat, list_format, ListFormatPrototype, ListFormatConstructor) \
__JS_ENUMERATE(Locale, locale, LocalePrototype, LocaleConstructor) \
__JS_ENUMERATE(NumberFormat, number_format, NumberFormatPrototype, NumberFormatConstructor) \
__JS_ENUMERATE(PluralRules, plural_rules, PluralRulesPrototype, PluralRulesConstructor) \
__JS_ENUMERATE(RelativeTimeFormat, relative_time_format, RelativeTimeFormatPrototype, RelativeTimeFormatConstructor) \
__JS_ENUMERATE(Segmenter, segmenter, SegmenterPrototype, SegmenterConstructor)
#define JS_ENUMERATE_TEMPORAL_OBJECTS \
__JS_ENUMERATE(Calendar, calendar, CalendarPrototype, CalendarConstructor) \
__JS_ENUMERATE(Duration, duration, DurationPrototype, DurationConstructor) \
__JS_ENUMERATE(Instant, instant, InstantPrototype, InstantConstructor) \
__JS_ENUMERATE(PlainDate, plain_date, PlainDatePrototype, PlainDateConstructor) \
__JS_ENUMERATE(PlainDateTime, plain_date_time, PlainDateTimePrototype, PlainDateTimeConstructor) \
__JS_ENUMERATE(PlainMonthDay, plain_month_day, PlainMonthDayPrototype, PlainMonthDayConstructor) \
__JS_ENUMERATE(PlainTime, plain_time, PlainTimePrototype, PlainTimeConstructor) \
__JS_ENUMERATE(PlainYearMonth, plain_year_month, PlainYearMonthPrototype, PlainYearMonthConstructor) \
__JS_ENUMERATE(TimeZone, time_zone, TimeZonePrototype, TimeZoneConstructor) \
__JS_ENUMERATE(ZonedDateTime, zoned_date_time, ZonedDateTimePrototype, ZonedDateTimeConstructor)
#define JS_ENUMERATE_BUILTIN_NAMESPACE_OBJECTS \
__JS_ENUMERATE(AtomicsObject, atomics) \
__JS_ENUMERATE(ConsoleObject, console) \
__JS_ENUMERATE(Intl::Intl, intl) \
__JS_ENUMERATE(JSONObject, json) \
__JS_ENUMERATE(MathObject, math) \
__JS_ENUMERATE(ReflectObject, reflect) \
__JS_ENUMERATE(Temporal::Temporal, temporal)
#define JS_ENUMERATE_ITERATOR_PROTOTYPES \
__JS_ENUMERATE(ArrayIterator, array_iterator) \
__JS_ENUMERATE(AsyncIterator, async_iterator) \
__JS_ENUMERATE(Intl::SegmentIterator, intl_segment_iterator) \
__JS_ENUMERATE(IteratorHelper, iterator_helper) \
__JS_ENUMERATE(MapIterator, map_iterator) \
__JS_ENUMERATE(RegExpStringIterator, regexp_string_iterator) \
__JS_ENUMERATE(SetIterator, set_iterator) \
__JS_ENUMERATE(StringIterator, string_iterator)
#define JS_ENUMERATE_BUILTIN_TYPES \
JS_ENUMERATE_NATIVE_OBJECTS \
JS_ENUMERATE_NATIVE_ERRORS \
JS_ENUMERATE_TYPED_ARRAYS
#define JS_ENUMERATE_WELL_KNOWN_SYMBOLS \
__JS_ENUMERATE(iterator, iterator) \
__JS_ENUMERATE(asyncIterator, async_iterator) \
__JS_ENUMERATE(match, match) \
__JS_ENUMERATE(matchAll, match_all) \
__JS_ENUMERATE(replace, replace) \
__JS_ENUMERATE(replaceAll, replace_all) \
__JS_ENUMERATE(search, search) \
__JS_ENUMERATE(split, split) \
__JS_ENUMERATE(hasInstance, has_instance) \
__JS_ENUMERATE(isConcatSpreadable, is_concat_spreadable) \
__JS_ENUMERATE(unscopables, unscopables) \
__JS_ENUMERATE(species, species) \
__JS_ENUMERATE(toPrimitive, to_primitive) \
__JS_ENUMERATE(toStringTag, to_string_tag) \
__JS_ENUMERATE(dispose, dispose)
#define JS_ENUMERATE_REGEXP_FLAGS \
__JS_ENUMERATE(hasIndices, has_indices, d) \
__JS_ENUMERATE(global, global, g) \
__JS_ENUMERATE(ignoreCase, ignore_case, i) \
__JS_ENUMERATE(multiline, multiline, m) \
__JS_ENUMERATE(dotAll, dot_all, s) \
__JS_ENUMERATE(unicodeSets, unicode_sets, v) \
__JS_ENUMERATE(unicode, unicode, u) \
__JS_ENUMERATE(sticky, sticky, y)
namespace JS {
class ASTNode;
class Accessor;
struct AsyncGeneratorRequest;
class BigInt;
class BoundFunction;
class Cell;
class CellAllocator;
class ClassExpression;
struct ClassFieldDefinition;
class Completion;
class Console;
class CyclicModule;
class DeclarativeEnvironment;
class DeferGC;
class ECMAScriptFunctionObject;
class Environment;
class Error;
class ErrorType;
struct ExecutionContext;
struct ExportEntry;
class ExportStatement;
class Expression;
class ForStatement;
class FunctionEnvironment;
class FunctionNode;
struct FunctionParameter;
class GlobalEnvironment;
class GlobalObject;
struct GraphLoadingState;
class HandleImpl;
class Heap;
class HeapBlock;
struct ImportEntry;
class ImportStatement;
class Identifier;
class Intrinsics;
class IteratorRecord;
class MemberExpression;
class MetaProperty;
class Module;
struct ModuleRequest;
class NativeFunction;
class ObjectEnvironment;
class Parser;
struct ParserError;
class PrimitiveString;
class Program;
class PromiseCapability;
class PromiseReaction;
class PropertyAttributes;
class PropertyDescriptor;
class PropertyKey;
class Realm;
class Reference;
class ScopeNode;
class Script;
class Shape;
class Statement;
class StringOrSymbol;
class SourceCode;
struct SourceRange;
class SourceTextModule;
class Symbol;
class Token;
class Utf16String;
class VM;
class Value;
class WeakContainer;
class WrappedFunction;
enum class DeclarationKind;
struct AlreadyResolved;
struct JobCallback;
struct ModuleRequest;
struct ModuleWithSpecifier;
// Not included in JS_ENUMERATE_NATIVE_OBJECTS due to missing distinct prototype
class ProxyObject;
class ProxyConstructor;
// Not included in JS_ENUMERATE_NATIVE_OBJECTS due to missing distinct constructor
class AsyncFromSyncIteratorPrototype;
class AsyncGenerator;
class AsyncGeneratorPrototype;
class GeneratorPrototype;
class WrapForValidIteratorPrototype;
class TypedArrayBase;
class TypedArrayConstructor;
class TypedArrayPrototype;
class AtomicsObject;
class ConsoleObject;
class JSONObject;
class MathObject;
class ReflectObject;
// Tag type used to differentiate between u8 as used by Uint8Array and u8 as used by Uint8ClampedArray.
struct ClampedU8;
#define __JS_ENUMERATE(ClassName, snake_name, ConstructorName, PrototypeName, ArrayType) \
class ClassName; \
class ConstructorName; \
class PrototypeName;
JS_ENUMERATE_NATIVE_OBJECTS_EXCLUDING_TEMPLATES
JS_ENUMERATE_NATIVE_ERRORS
JS_ENUMERATE_TYPED_ARRAYS
#undef __JS_ENUMERATE
#define __JS_ENUMERATE(ClassName, snake_name) \
class ClassName; \
JS_ENUMERATE_BUILTIN_NAMESPACE_OBJECTS
#undef __JS_ENUMERATE
namespace Intl {
#define __JS_ENUMERATE(ClassName, snake_name, ConstructorName, PrototypeName) \
class ClassName; \
class ConstructorName; \
class PrototypeName;
JS_ENUMERATE_INTL_OBJECTS
#undef __JS_ENUMERATE
class Intl;
class MathematicalValue;
// Not included in JS_ENUMERATE_INTL_OBJECTS due to missing distinct constructor
class Segments;
class SegmentsPrototype;
};
namespace Temporal {
#define __JS_ENUMERATE(ClassName, snake_name, ConstructorName, PrototypeName) \
class ClassName; \
class ConstructorName; \
class PrototypeName;
JS_ENUMERATE_TEMPORAL_OBJECTS
#undef __JS_ENUMERATE
class Temporal;
struct DurationRecord;
struct DateDurationRecord;
struct TimeDurationRecord;
struct PartialDurationRecord;
};
template<typename T>
requires(!IsLvalueReference<T>)
class ThrowCompletionOr;
template<class T>
class Handle;
template<class T, size_t inline_capacity = 0>
class MarkedVector;
namespace Bytecode {
class BasicBlock;
enum class Builtin;
class Executable;
class Generator;
class Instruction;
class Interpreter;
class RegexTable;
class Register;
}
}
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