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// 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.
#include 'src/builtins/builtins-regexp-gen.h'
#include 'src/builtins/builtins-utils-gen.h'
#include 'src/builtins/builtins.h'
#include 'src/codegen/code-factory.h'
#include 'src/heap/factory-inl.h'
#include 'src/objects/arguments.h'
#include 'src/objects/bigint.h'
#include 'src/objects/elements-kind.h'
#include 'src/objects/free-space.h'
#include 'src/objects/js-generator.h'
#include 'src/objects/js-promise.h'
#include 'src/objects/js-regexp-string-iterator.h'
#include 'src/objects/js-weak-refs.h'
#include 'src/objects/objects.h'
#include 'src/objects/source-text-module.h'
#include 'src/objects/stack-frame-info.h'
#include 'src/objects/synthetic-module.h'
#include 'src/objects/template-objects.h'
type void;
type never;
type Tagged generates 'TNode<Object>' constexpr 'ObjectPtr';
type Smi extends Tagged generates 'TNode<Smi>' constexpr 'Smi';
// A Smi that is greater than or equal to 0. See TaggedIsPositiveSmi.
type PositiveSmi extends Smi;
// The Smi value zero, which is often used as null for HeapObject types.
type Zero extends PositiveSmi;
// A value with the size of Tagged which may contain arbitrary data.
type Uninitialized extends Tagged;
@abstract
extern class HeapObject extends Tagged {
map: Map;
}
type Object = Smi | HeapObject;
// Defined to coincide with https://tc39.es/ecma262/#sec-ispropertykey
// Doesn't include PrivateSymbol.
type PropertyKey = String | PublicSymbol;
// TODO(tebbi): PrivateSymbol is only exposed to JavaScript through the debugger
// API. We should reconsider this and try not to expose it at all. Then JSAny
// would not need to contain it.
// A JavaScript primitive value as defined in
// https://tc39.es/ecma262/#sec-primitive-value.
type JSPrimitive = Numeric | String | Symbol | Boolean |
Null | Undefined;
// A user-exposed JavaScript value, as opposed to V8-internal values like
// TheHole or FixedArray.
type JSAny = JSReceiver | JSPrimitive;
type JSAnyNotNumber = BigInt | String | Symbol | Boolean |
Null | Undefined | JSReceiver;
// This is the intersection of JSAny and HeapObject.
type JSAnyNotSmi = JSAnyNotNumber | HeapNumber;
type int32 generates 'TNode<Int32T>' constexpr 'int32_t';
type uint32 generates 'TNode<Uint32T>' constexpr 'uint32_t';
type int31 extends int32
generates 'TNode<Int32T>' constexpr 'int31_t';
type uint31 extends uint32
generates 'TNode<Uint32T>' constexpr 'uint31_t';
type int16 extends int31
generates 'TNode<Int16T>' constexpr 'int16_t';
type uint16 extends uint31
generates 'TNode<Uint16T>' constexpr 'uint16_t';
type int8 extends int16 generates 'TNode<Int8T>' constexpr 'int8_t';
type uint8 extends uint16
generates 'TNode<Uint8T>' constexpr 'uint8_t';
type char8 extends int8 constexpr 'char';
type char16 extends uint16 constexpr 'char16_t';
type int64 generates 'TNode<Int64T>' constexpr 'int64_t';
type intptr generates 'TNode<IntPtrT>' constexpr 'intptr_t';
type uintptr generates 'TNode<UintPtrT>' constexpr 'uintptr_t';
type float32 generates 'TNode<Float32T>' constexpr 'float';
type float64 generates 'TNode<Float64T>' constexpr 'double';
type bool generates 'TNode<BoolT>' constexpr 'bool';
type bint generates 'TNode<BInt>' constexpr 'BInt';
type string constexpr 'const char*';
type NameDictionary extends FixedArray;
type RawPtr generates 'TNode<RawPtrT>' constexpr 'void*';
type Code extends HeapObject generates 'TNode<Code>';
type BuiltinPtr extends Smi generates 'TNode<BuiltinPtr>';
extern class Context extends HeapObject {
length: Smi;
scope_info: ScopeInfo;
previous: Object;
extension: Object;
native_context: Object;
}
type NativeContext extends Context generates 'TNode<NativeContext>';
@generateCppClass
extern class Oddball extends HeapObject {
to_number_raw: float64;
to_string: String;
to_number: Number;
type_of: String;
kind: Smi;
}
extern class HeapNumber extends HeapObject { value: float64; }
type Number = Smi | HeapNumber;
type Numeric = Number | BigInt;
@abstract
@generateCppClass
extern class Name extends HeapObject {
hash_field: uint32;
}
// This is the same as Name, but with the information that there are no other
// kinds of names.
type AnyName = PrivateSymbol | PublicSymbol | String;
@generateCppClass
extern class Symbol extends Name {
flags: int32;
name: Object; // The print name of a symbol, or undefined if none.
}
type PublicSymbol extends Symbol;
type PrivateSymbol extends Symbol;
@abstract
@generateCppClass
extern class String extends Name {
length: int32;
}
@generateCppClass
extern class ConsString extends String {
first: String;
second: String;
}
@abstract
extern class ExternalString extends String {
resource: RawPtr;
resource_data: RawPtr;
}
extern class ExternalOneByteString extends ExternalString {}
extern class ExternalTwoByteString extends ExternalString {}
@generateCppClass
extern class InternalizedString extends String {
}
// TODO(v8:8983): Add declaration for variable-sized region.
@abstract
@generateCppClass
extern class SeqString extends String {
}
@generateCppClass
extern class SeqOneByteString extends SeqString {
chars[length]: char8;
}
@generateCppClass
extern class SeqTwoByteString extends SeqString {
chars[length]: char16;
}
@generateCppClass
extern class SlicedString extends String {
parent: String;
offset: Smi;
}
@generateCppClass
extern class ThinString extends String {
actual: String;
}
// The HeapNumber value NaN
type NaN extends HeapNumber;
@abstract
@generatePrint
@generateCppClass
extern class Struct extends HeapObject {
}
@abstract
@dirtyInstantiatedAbstractClass
@generatePrint
@generateCppClass
extern class Tuple2 extends Struct {
value1: Object;
value2: Object;
}
@abstract
@dirtyInstantiatedAbstractClass
@generatePrint
@generateCppClass
extern class Tuple3 extends Tuple2 {
value3: Object;
}
// A direct string can be accessed directly through CSA without going into the
// C++ runtime. See also: ToDirectStringAssembler.
type DirectString extends String;
type RootIndex generates 'TNode<Int32T>' constexpr 'RootIndex';
@abstract
extern class FixedArrayBase extends HeapObject {
length: Smi;
}
extern class FixedArray extends FixedArrayBase { objects[length]: Object; }
extern class FixedDoubleArray extends FixedArrayBase {
floats[length]: float64;
}
extern class WeakFixedArray extends HeapObject { length: Smi; }
extern class ByteArray extends FixedArrayBase {}
type LayoutDescriptor extends ByteArray
generates 'TNode<LayoutDescriptor>';
type TransitionArray extends WeakFixedArray
generates 'TNode<TransitionArray>';
type InstanceType extends uint16 constexpr 'v8::internal::InstanceType';
extern class Map extends HeapObject {
instance_size_in_words: uint8;
in_object_properties_start_or_constructor_function_index: uint8;
used_or_unused_instance_size_in_words: uint8;
visitor_id: uint8;
instance_type: InstanceType;
bit_field: uint8;
bit_field2: uint8;
bit_field3: uint32;
@if(TAGGED_SIZE_8_BYTES) optional_padding: uint32;
@ifnot(TAGGED_SIZE_8_BYTES) optional_padding: void;
prototype: HeapObject;
constructor_or_back_pointer: Object;
instance_descriptors: DescriptorArray;
@if(V8_DOUBLE_FIELDS_UNBOXING) layout_descriptor: LayoutDescriptor;
@ifnot(V8_DOUBLE_FIELDS_UNBOXING) layout_descriptor: void;
dependent_code: DependentCode;
prototype_validity_cell: Smi | Cell;
// TODO(v8:9108): Misusing "weak" keyword; type should be
// Map | Weak<Map> | TransitionArray | PrototypeInfo | Smi.
weak transitions_or_prototype_info: Map | TransitionArray |
PrototypeInfo | Smi;
}
@generatePrint
@generateCppClass
extern class EnumCache extends Struct {
keys: FixedArray;
indices: FixedArray;
}
@generatePrint
@generateCppClass
extern class SourcePositionTableWithFrameCache extends Struct {
source_position_table: ByteArray;
stack_frame_cache: Object;
}
// We make this class abstract because it is missing the variable-sized part,
// which is still impossible to express in Torque.
@abstract
extern class DescriptorArray extends HeapObject {
number_of_all_descriptors: uint16;
number_of_descriptors: uint16;
raw_number_of_marked_descriptors: uint16;
filler16_bits: uint16;
enum_cache: EnumCache;
// DescriptorEntry needs to be a struct with three fields.
// desriptors : DescriptorEntry[number_of_all_descriptors]
}
// These intrinsics should never be called from Torque code. They're used
// internally by the 'new' operator and only declared here because it's simpler
// than building the definition from C++.
intrinsic %GetAllocationBaseSize<Class: type>(map: Map): intptr;
intrinsic %Allocate<Class: type>(size: intptr): Class;
intrinsic %GetStructMap(instanceKind: constexpr InstanceType): Map;
intrinsic %AddIndexedFieldSizeToObjectSize<T: type>(
baseSize: intptr, indexSize: T, fieldSize: int32): intptr {
const convertedIndexSize = Convert<int32>(indexSize);
const variableSize: int32 =
TryInt32Mul(convertedIndexSize, fieldSize) otherwise unreachable;
const convertedVariableSize = Convert<intptr>(variableSize);
return TryIntPtrAdd(baseSize, convertedVariableSize) otherwise unreachable;
}
intrinsic
%InitializeFieldsFromIterator<Container: type, Index: type, Iterator: type>(
c: Container, length: Index, i: Iterator) {
try {
let mutableIterator = i;
let current: Index = 0;
while (current < length) {
// TODO(danno): The indexed accessor on the container requires that the
// '[]=' operator be defined explicitly for the Container
// (e.g. FixedArray). We should change this to use slice references
// once they are implemented.
c[current++] = mutableIterator.Next() otherwise NoMore;
}
}
label NoMore deferred {
unreachable;
}
}
@abstract
extern class JSReceiver extends HeapObject {
properties_or_hash: FixedArrayBase | PropertyArray | Smi;
}
type Constructor extends JSReceiver;
@abstract
@dirtyInstantiatedAbstractClass
@generateCppClass
extern class JSObject extends JSReceiver {
// [elements]: The elements (properties with names that are integers).
//
// Elements can be in two general modes: fast and slow. Each mode
// corresponds to a set of object representations of elements that
// have something in common.
//
// In the fast mode elements is a FixedArray and so each element can be
// quickly accessed. The elements array can have one of several maps in this
// mode: fixed_array_map, fixed_double_array_map,
// sloppy_arguments_elements_map or fixed_cow_array_map (for copy-on-write
// arrays). In the latter case the elements array may be shared by a few
// objects and so before writing to any element the array must be copied. Use
// EnsureWritableFastElements in this case.
//
// In the slow mode the elements is either a NumberDictionary or a
// FixedArray parameter map for a (sloppy) arguments object.
elements: FixedArrayBase;
}
macro NewJSObject(implicit context: Context)(): JSObject {
const objectFunction: JSFunction = GetObjectFunction();
const map: Map = Cast<Map>(objectFunction.prototype_or_initial_map)
otherwise unreachable;
return new JSObject{
map,
properties_or_hash: kEmptyFixedArray,
elements: kEmptyFixedArray
};
}
extern macro HasPrototypeSlot(JSFunction): bool;
macro GetDerivedMap(implicit context: Context)(
target: JSFunction, newTarget: JSReceiver): Map {
try {
const constructor = Cast<JSFunction>(newTarget) otherwise SlowPath;
if (!HasPrototypeSlot(constructor)) {
goto SlowPath;
}
assert(IsConstructor(constructor));
const map =
Cast<Map>(constructor.prototype_or_initial_map) otherwise SlowPath;
if (LoadConstructorOrBackPointer(map) != target) {
goto SlowPath;
}
return map;
}
label SlowPath {
return runtime::GetDerivedMap(context, target, newTarget);
}
}
macro AllocateFastOrSlowJSObjectFromMap(implicit context: Context)(map: Map):
JSObject {
let properties = kEmptyFixedArray;
if (IsDictionaryMap(map)) {
properties = AllocateNameDictionary(kNameDictionaryInitialCapacity);
}
return AllocateJSObjectFromMap(
map, properties, kEmptyFixedArray, kNone, kWithSlackTracking);
}
extern class JSFunction extends JSObject {
shared_function_info: SharedFunctionInfo;
context: Context;
feedback_cell: FeedbackCell;
weak code: Code;
// Space for the following field may or may not be allocated.
@noVerifier weak prototype_or_initial_map: JSReceiver | Map;
}
@generateCppClass
extern class JSProxy extends JSReceiver {
target: JSReceiver | Null;
handler: JSReceiver | Null;
}
// Just a starting shape for JSObject; properties can move after initialization.
@noVerifier
extern class JSProxyRevocableResult extends JSObject {
proxy: JSAny;
revoke: JSAny;
}
macro NewJSProxyRevocableResult(implicit context: Context)(
proxy: JSProxy, revoke: JSFunction): JSProxyRevocableResult {
return new JSProxyRevocableResult{
map: GetProxyRevocableResultMap(),
properties_or_hash: kEmptyFixedArray,
elements: kEmptyFixedArray,
proxy,
revoke
};
}
@generateCppClass
extern class JSGlobalProxy extends JSObject {
// [native_context]: the owner native context of this global proxy object.
// It is null value if this object is not used by any context.
native_context: Object;
}
@generateCppClass
extern class JSPrimitiveWrapper extends JSObject {
value: JSAny;
}
@generateCppClass
extern class JSArgumentsObject extends JSObject {
}
// Just a starting shape for JSObject; properties can move after initialization.
@noVerifier
@hasSameInstanceTypeAsParent
extern class JSArgumentsObjectWithLength extends JSArgumentsObject {
length: JSAny;
}
// Just a starting shape for JSObject; properties can move after initialization.
@hasSameInstanceTypeAsParent
extern class JSSloppyArgumentsObject extends JSArgumentsObjectWithLength {
callee: JSAny;
}
// Just a starting shape for JSObject; properties can move after initialization.
@hasSameInstanceTypeAsParent
@noVerifier
extern class JSStrictArgumentsObject extends JSArgumentsObjectWithLength {
}
extern class JSArrayIterator extends JSObject {
iterated_object: JSReceiver;
next_index: Number;
kind: Smi;
}
extern class JSArray extends JSObject {
IsEmpty(): bool {
return this.length == 0;
}
length: Number;
}
macro NewJSArray(implicit context: Context)(
map: Map, elements: FixedArrayBase): JSArray {
return new JSArray{
map,
properties_or_hash: kEmptyFixedArray,
elements,
length: elements.length
};
}
macro NewJSArray(implicit context: Context)(): JSArray {
return new JSArray{
map: GetFastPackedSmiElementsJSArrayMap(),
properties_or_hash: kEmptyFixedArray,
elements: kEmptyFixedArray,
length: 0
};
}
// A HeapObject with a JSArray map, and either fast packed elements, or fast
// holey elements when the global NoElementsProtector is not invalidated.
transient type FastJSArray extends JSArray;
// A HeapObject with a JSArray map, and either fast packed elements, or fast
// holey elements or frozen, sealed elements when the global NoElementsProtector
// is not invalidated.
transient type FastJSArrayForRead extends JSArray;
// A FastJSArray when the global ArraySpeciesProtector is not invalidated.
transient type FastJSArrayForCopy extends FastJSArray;
// A FastJSArray when the global ArrayIteratorProtector is not invalidated.
transient type FastJSArrayWithNoCustomIteration extends FastJSArray;
// A FastJSArrayForRead when the global ArrayIteratorProtector is not
// invalidated.
transient type FastJSArrayForReadWithNoCustomIteration extends
FastJSArrayForRead;
type NoSharedNameSentinel extends Smi;
@generateCppClass
extern class CallHandlerInfo extends Struct {
callback: NonNullForeign | Undefined | Zero;
js_callback: NonNullForeign | Undefined | Zero;
data: Object;
}
type ObjectHashTable extends FixedArray;
@abstract
extern class Module extends HeapObject {
exports: ObjectHashTable;
hash: Smi;
status: Smi;
module_namespace: JSModuleNamespace | Undefined;
exception: Object;
}
type SourceTextModuleInfo extends FixedArray;
@generateCppClass
extern class SourceTextModule extends Module {
// The code representing this module, or an abstraction thereof.
code: SharedFunctionInfo | JSFunction |
JSGeneratorObject | SourceTextModuleInfo;
// Arrays of cells corresponding to regular exports and regular imports.
// A cell's position in the array is determined by the cell index of the
// associated module entry (which coincides with the variable index of the
// associated variable).
regular_exports: FixedArray;
regular_imports: FixedArray;
// Modules imported or re-exported by this module.
// Corresponds 1-to-1 to the module specifier strings in
// SourceTextModuleInfo::module_requests.
requested_modules: FixedArray;
// Script from which the module originates.
script: Script;
// The value of import.meta inside of this module.
// Lazily initialized on first access. It's the hole before first access and
// a JSObject afterwards.
import_meta: TheHole | JSObject;
dfs_index: Smi;
dfs_ancestor_index: Smi;
}
@generateCppClass
extern class SyntheticModule extends Module {
name: String;
export_names: FixedArray;
evaluation_steps: Foreign;
}
@abstract
@generateCppClass
extern class JSModuleNamespace extends JSObject {
module: Module;
}
@hasSameInstanceTypeAsParent
@noVerifier
extern class TemplateList extends FixedArray {
}
@abstract
@generateCppClass
extern class JSWeakCollection extends JSObject {
// The backing hash table mapping keys to values.
table: Object;
}
@generateCppClass
extern class JSWeakSet extends JSWeakCollection {
}
@generateCppClass
extern class JSWeakMap extends JSWeakCollection {
}
@generateCppClass
extern class JSCollectionIterator extends JSObject {
// The backing hash table mapping keys to values.
table: Object;
// The index into the data table.
index: Object;
}
extern class JSMessageObject extends JSObject {
// Tagged fields.
message_type: Smi;
arguments: Object;
script: Script;
stack_frames: Object;
shared_info: SharedFunctionInfo | Undefined;
// Raw data fields.
// TODO(ishell): store as int32 instead of Smi.
bytecode_offset: Smi;
start_position: Smi;
end_position: Smi;
error_level: Smi;
}
extern class WeakArrayList extends HeapObject {
capacity: Smi;
length: Smi;
// TODO(v8:8983): declare variable-sized region for contained MaybeObject's
// objects[length]: MaybeObject;
}
extern class PrototypeInfo extends Struct {
js_module_namespace: JSModuleNamespace | Undefined;
prototype_users: WeakArrayList | Zero;
registry_slot: Smi;
validity_cell: Object;
// TODO(v8:9108): Should be Weak<Map> | Undefined.
@noVerifier object_create_map: Map | Undefined;
bit_field: Smi;
}
extern class Script extends Struct {
source: Object;
name: Object;
line_offset: Smi;
column_offset: Smi;
context: Object;
script_type: Smi;
line_ends: Object;
id: Smi;
eval_from_shared_or_wrapped_arguments: Object;
eval_from_position: Smi;
shared_function_infos: Object;
flags: Smi;
source_url: Object;
source_mapping_url: Object;
host_defined_options: Object;
}
@generateCppClass
extern class EmbedderDataArray extends HeapObject {
length: Smi;
}
type ScopeInfo extends HeapObject generates 'TNode<ScopeInfo>';
extern class PreparseData extends HeapObject {
// TODO(v8:8983): Add declaration for variable-sized region.
data_length: int32;
inner_length: int32;
}
extern class InterpreterData extends Struct {
bytecode_array: BytecodeArray;
interpreter_trampoline: Code;
}
extern class SharedFunctionInfo extends HeapObject {
weak function_data: Object;
name_or_scope_info: String | NoSharedNameSentinel | ScopeInfo;
outer_scope_info_or_feedback_metadata: HeapObject;
script_or_debug_info: Script | DebugInfo | Undefined;
length: int16;
formal_parameter_count: uint16;
// Currently set to uint16, can be set to uint8 to save space.
expected_nof_properties: uint16;
function_token_offset: int16;
flags: int32;
function_literal_id: int32;
@if(V8_SFI_HAS_UNIQUE_ID) unique_id: int32;
}
@generateCppClass
extern class JSBoundFunction extends JSObject {
// The wrapped function object.
bound_target_function: Callable;
// The value that is always passed as the this value when calling the wrapped
// function.
bound_this: JSAny;
// A list of values whose elements are used as the first arguments to any call
// to the wrapped function.
bound_arguments: FixedArray;
}
// Specialized types. The following three type definitions don't correspond to
// actual C++ classes, but have Is... methods that check additional constraints.
// A Foreign object whose raw pointer is not allowed to be null.
type NonNullForeign extends Foreign;
// A function built with InstantiateFunction for the public API.
type CallableApiObject extends JSObject;
// A JSProxy with the callable bit set.
type CallableJSProxy extends JSProxy;
type Callable =
JSFunction | JSBoundFunction | CallableJSProxy | CallableApiObject;
extern operator '.length_intptr' macro LoadAndUntagFixedArrayBaseLength(
FixedArrayBase): intptr;
type SloppyArgumentsElements extends FixedArray;
type NumberDictionary extends HeapObject
generates 'TNode<NumberDictionary>';
extern class FreeSpace extends HeapObject {
size: Smi;
next: FreeSpace | Uninitialized;
}
// %RawDownCast should *never* be used anywhere in Torque code except for
// in Torque-based UnsafeCast operators preceeded by an appropriate
// type assert()
intrinsic %RawDownCast<To: type, From: type>(x: From): To;
intrinsic %RawConstexprCast<To: type, From: type>(f: From): To;
type NativeContextSlot generates 'TNode<IntPtrT>' constexpr 'int32_t';
const ARRAY_BUFFER_FUN_INDEX: constexpr NativeContextSlot
generates 'Context::ARRAY_BUFFER_FUN_INDEX';
const ARRAY_BUFFER_NOINIT_FUN_INDEX: constexpr NativeContextSlot
generates 'Context::ARRAY_BUFFER_NOINIT_FUN_INDEX';
const ARRAY_BUFFER_MAP_INDEX: constexpr NativeContextSlot
generates 'Context::ARRAY_BUFFER_MAP_INDEX';
const ARRAY_JOIN_STACK_INDEX: constexpr NativeContextSlot
generates 'Context::ARRAY_JOIN_STACK_INDEX';
const OBJECT_FUNCTION_INDEX: constexpr NativeContextSlot
generates 'Context::OBJECT_FUNCTION_INDEX';
const ITERATOR_RESULT_MAP_INDEX: constexpr NativeContextSlot
generates 'Context::ITERATOR_RESULT_MAP_INDEX';
const JS_ARRAY_PACKED_ELEMENTS_MAP_INDEX: constexpr NativeContextSlot
generates 'Context::JS_ARRAY_PACKED_ELEMENTS_MAP_INDEX';
const JS_ARRAY_PACKED_SMI_ELEMENTS_MAP_INDEX: constexpr NativeContextSlot
generates 'Context::JS_ARRAY_PACKED_SMI_ELEMENTS_MAP_INDEX';
const PROXY_REVOCABLE_RESULT_MAP_INDEX: constexpr NativeContextSlot
generates 'Context::PROXY_REVOCABLE_RESULT_MAP_INDEX';
const REFLECT_APPLY_INDEX: constexpr NativeContextSlot
generates 'Context::REFLECT_APPLY_INDEX';
const REGEXP_LAST_MATCH_INFO_INDEX: constexpr NativeContextSlot
generates 'Context::REGEXP_LAST_MATCH_INFO_INDEX';
const INITIAL_STRING_ITERATOR_MAP_INDEX: constexpr NativeContextSlot
generates 'Context::INITIAL_STRING_ITERATOR_MAP_INDEX';
extern operator '[]' macro LoadContextElement(
NativeContext, NativeContextSlot): Object;
extern operator '[]=' macro StoreContextElement(
NativeContext, NativeContextSlot, Object): void;
type ContextSlot generates 'TNode<IntPtrT>' constexpr 'int32_t';
const PROXY_SLOT: constexpr ContextSlot
generates 'Context::MIN_CONTEXT_SLOTS';
extern operator '[]' macro LoadContextElement(Context, ContextSlot): Object;
extern operator '[]=' macro StoreContextElement(
Context, ContextSlot, Object): void;
extern operator '[]' macro LoadContextElement(Context, intptr): Object;
extern operator '[]' macro LoadContextElement(Context, Smi): Object;
extern class JSArrayBuffer extends JSObject {
byte_length: uintptr;
backing_store: RawPtr;
}
@abstract
extern class JSArrayBufferView extends JSObject {
buffer: JSArrayBuffer;
byte_offset: uintptr;
byte_length: uintptr;
}
extern class JSTypedArray extends JSArrayBufferView {
length: uintptr;
external_pointer: RawPtr;
base_pointer: ByteArray | Smi;
}
@abstract
@generateCppClass
extern class JSCollection extends JSObject {
// The backing hash table.
table: Object;
}
@generateCppClass
extern class JSSet extends JSCollection {
}
@generateCppClass
extern class JSMap extends JSCollection {
}
@generateCppClass
extern class JSDate extends JSObject {
// If one component is NaN, all of them are, indicating a NaN time value.
// The time value.
value: NumberOrUndefined;
// Cached values:
year: Undefined | Smi | NaN;
month: Undefined | Smi | NaN;
day: Undefined | Smi | NaN;
weekday: Undefined | Smi | NaN;
hour: Undefined | Smi | NaN;
min: Undefined | Smi | NaN;
sec: Undefined | Smi | NaN;
// Sample of the date cache stamp at the moment when chached fields were
// cached.
cache_stamp: Undefined | Smi | NaN;
}
extern class JSGlobalObject extends JSObject {
native_context: NativeContext;
global_proxy: JSGlobalProxy;
}
@generateCppClass
extern class JSAsyncFromSyncIterator extends JSObject {
sync_iterator: JSReceiver;
// The "next" method is loaded during GetIterator, and is not reloaded for
// subsequent "next" invocations.
next: Object;
}
extern class JSStringIterator extends JSObject {
string: String;
next_index: Smi;
}
@abstract
@generateCppClass
extern class TemplateInfo extends Struct {
tag: Object;
serial_number: Object;
number_of_properties: Smi;
property_list: Object;
property_accessors: Object;
}
@generatePrint
@generateCppClass
extern class TemplateObjectDescription extends Struct {
raw_strings: FixedArray;
cooked_strings: FixedArray;
}
@generateCppClass
extern class FunctionTemplateRareData extends Struct {
// See DECL_RARE_ACCESSORS in FunctionTemplateInfo.
prototype_template: Object;
prototype_provider_template: Object;
parent_template: Object;
named_property_handler: Object;
indexed_property_handler: Object;
instance_template: Object;
instance_call_handler: Object;
access_check_info: Object;
}
@generateCppClass
extern class FunctionTemplateInfo extends TemplateInfo {
// Handler invoked when calling an instance of this FunctionTemplateInfo.
// Either CallInfoHandler or Undefined.
call_code: Object;
class_name: Object;
// If the signature is a FunctionTemplateInfo it is used to check whether the
// receiver calling the associated JSFunction is a compatible receiver, i.e.
// it is an instance of the signature FunctionTemplateInfo or any of the
// receiver's prototypes are.
signature: Object;
// If any of the setters declared by DECL_RARE_ACCESSORS are used then a
// FunctionTemplateRareData will be stored here. Until then this contains
// undefined.
rare_data: HeapObject;
shared_function_info: Object;
flag: Smi;
length: Smi;
// Either the_hole or a private symbol. Used to cache the result on
// the receiver under the the cached_property_name when this
// FunctionTemplateInfo is used as a getter.
cached_property_name: Object;
}
@generateCppClass
extern class ObjectTemplateInfo extends TemplateInfo {
constructor: Object;
data: Object;
}
extern class PropertyArray extends HeapObject { length_and_hash: Smi; }
type DependentCode extends WeakFixedArray;
extern class PropertyCell extends HeapObject {
name: AnyName;
property_details_raw: Smi;
value: Object;
dependent_code: DependentCode;
}
extern class JSDataView extends JSArrayBufferView { data_pointer: RawPtr; }
type ElementsKind generates 'TNode<Int32T>' constexpr 'ElementsKind';
type LanguageMode extends Smi constexpr 'LanguageMode';
type ExtractFixedArrayFlags
generates 'TNode<Smi>'
constexpr 'CodeStubAssembler::ExtractFixedArrayFlags';
type WriteBarrierMode
generates 'TNode<Int32T>' constexpr 'WriteBarrierMode';
type MessageTemplate constexpr 'MessageTemplate';
type PrimitiveType constexpr 'PrimitiveType';
type ToIntegerTruncationMode
constexpr 'CodeStubAssembler::ToIntegerTruncationMode';
type AllocationFlags constexpr 'AllocationFlags';
type SlackTrackingMode constexpr 'SlackTrackingMode';
type UnicodeEncoding constexpr 'UnicodeEncoding';
const UTF16:
constexpr UnicodeEncoding generates 'UnicodeEncoding::UTF16';
const UTF32:
constexpr UnicodeEncoding generates 'UnicodeEncoding::UTF32';
extern class Foreign extends HeapObject { foreign_address: RawPtr; }
@generateCppClass
extern class InterceptorInfo extends Struct {
getter: NonNullForeign | Zero | Undefined;
setter: NonNullForeign | Zero | Undefined;
query: NonNullForeign | Zero | Undefined;
descriptor: NonNullForeign | Zero | Undefined;
deleter: NonNullForeign | Zero | Undefined;
enumerator: NonNullForeign | Zero | Undefined;
definer: NonNullForeign | Zero | Undefined;
data: Object;
flags: Smi;
}
@generateCppClass
extern class AccessCheckInfo extends Struct {
callback: Foreign | Zero | Undefined;
named_interceptor: InterceptorInfo | Zero | Undefined;
indexed_interceptor: InterceptorInfo | Zero | Undefined;
data: Object;
}
@generateCppClass
extern class ArrayBoilerplateDescription extends Struct {
flags: Smi;
constant_elements: FixedArrayBase;
}
@generateCppClass
extern class AliasedArgumentsEntry extends Struct {
aliased_context_slot: Smi;
}
@generateCppClass
extern class Cell extends HeapObject {
value: Object;
}
extern class DataHandler extends Struct {
smi_handler: Smi | Code;
validity_cell: Smi | Cell;
// Space for the following fields may or may not be allocated.
// TODO(v8:9108): Misusing "weak" keyword; should be MaybeObject.
@noVerifier weak data_1: Object;
@noVerifier weak data_2: Object;
@noVerifier weak data_3: Object;
}
@abstract
@dirtyInstantiatedAbstractClass
@generateCppClass
extern class JSGeneratorObject extends JSObject {
function: JSFunction;
context: Context;
receiver: JSAny;
// For executing generators: the most recent input value.
// For suspended generators: debug information (bytecode offset).
// There is currently no need to remember the most recent input value for a
// suspended generator.
input_or_debug_pos: Object;
resume_mode: Smi;
continuation: Smi;
// Saved interpreter register file.
parameters_and_registers: FixedArray;
}
@generateCppClass
extern class JSAsyncFunctionObject extends JSGeneratorObject {
promise: JSPromise;
}
@generateCppClass
extern class JSAsyncGeneratorObject extends JSGeneratorObject {
// Pointer to the head of a singly linked list of AsyncGeneratorRequest, or
// undefined.
queue: HeapObject;
is_awaiting: Smi;
}
@generateCppClass
extern class JSPromise extends JSObject {
// Smi 0 terminated list of PromiseReaction objects in case the JSPromise was
// not settled yet, otherwise the result.
reactions_or_result: Object;
flags: Smi;
}
@abstract
@generateCppClass
extern class Microtask extends Struct {
}
@generateCppClass
extern class CallbackTask extends Microtask {
callback: Foreign;
data: Foreign;
}
@generateCppClass
extern class CallableTask extends Microtask {
callable: JSReceiver;
context: Context;
}
extern class StackFrameInfo extends Struct {
line_number: Smi;
column_number: Smi;
promise_all_index: Smi;
script_id: Smi;
script_name: String | Null | Undefined;
script_name_or_source_url: String | Null | Undefined;
function_name: String | Null | Undefined;
method_name: String | Null | Undefined;
type_name: String | Null | Undefined;
eval_origin: String | Null | Undefined;
wasm_module_name: String | Null | Undefined;
wasm_instance: WasmInstanceObject | Null | Undefined;
flag: Smi;
}
type FrameArray extends FixedArray;
@generateCppClass
extern class StackTraceFrame extends Struct {
frame_array: FrameArray | Undefined;
frame_index: Smi;
frame_info: StackFrameInfo | Undefined;
id: Smi;
}
@generateCppClass
extern class ClassPositions extends Struct {
start: Smi;
end: Smi;
}
type WasmInstanceObject extends JSObject;
extern class WasmExportedFunctionData extends Struct {
wrapper_code: Code;
instance: WasmInstanceObject;
jump_table_offset: Smi;
function_index: Smi;
// The remaining fields are for fast calling from C++. The contract is
// that they are lazily populated, and either all will be present or none.
c_wrapper_code: Object;
wasm_call_target: Smi | Foreign;
packed_args_size: Smi;
}
extern class WasmJSFunctionData extends Struct {
callable: JSReceiver;
wrapper_code: Code;
serialized_return_count: Smi;
serialized_parameter_count: Smi;
serialized_signature: ByteArray; // PodArray<wasm::ValueType>
}
extern class WasmCapiFunctionData extends Struct {
call_target: RawPtr;
embedder_data: Foreign; // Managed<wasm::FuncData>
wrapper_code: Code;
serialized_signature: ByteArray; // PodArray<wasm::ValueType>
}
extern class WasmIndirectFunctionTable extends Struct {
size: uint32;
@if(TAGGED_SIZE_8_BYTES) optional_padding: uint32;
@ifnot(TAGGED_SIZE_8_BYTES) optional_padding: void;
sig_ids: RawPtr;
targets: RawPtr;
managed_native_allocations: Foreign | Undefined;
refs: FixedArray;
}
extern class WasmDebugInfo extends Struct {
instance: WasmInstanceObject;
interpreter_handle: Foreign | Undefined;
locals_names: FixedArray | Undefined;
c_wasm_entries: FixedArray | Undefined;
c_wasm_entry_map: Foreign | Undefined; // Managed<wasm::SignatureMap>
}
@generateCppClass
extern class WasmExceptionTag extends Struct {
index: Smi;
}
const kTaggedSize: constexpr int31 generates 'kTaggedSize';
const kDoubleSize: constexpr int31 generates 'kDoubleSize';
const kSmiTagSize: constexpr int31 generates 'kSmiTagSize';
const V8_INFINITY: constexpr float64 generates 'V8_INFINITY';
const NO_ELEMENTS: constexpr ElementsKind generates 'NO_ELEMENTS';
const PACKED_SMI_ELEMENTS:
constexpr ElementsKind generates 'PACKED_SMI_ELEMENTS';
const HOLEY_SMI_ELEMENTS:
constexpr ElementsKind generates 'HOLEY_SMI_ELEMENTS';
const PACKED_ELEMENTS:
constexpr ElementsKind generates 'PACKED_ELEMENTS';
const HOLEY_ELEMENTS: constexpr ElementsKind generates 'HOLEY_ELEMENTS';
const PACKED_DOUBLE_ELEMENTS:
constexpr ElementsKind generates 'PACKED_DOUBLE_ELEMENTS';
const HOLEY_DOUBLE_ELEMENTS:
constexpr ElementsKind generates 'HOLEY_DOUBLE_ELEMENTS';
const LAST_ANY_NONEXTENSIBLE_ELEMENTS_KIND: constexpr ElementsKind
generates 'LAST_ANY_NONEXTENSIBLE_ELEMENTS_KIND';
const DICTIONARY_ELEMENTS:
constexpr ElementsKind generates 'DICTIONARY_ELEMENTS';
const UINT8_ELEMENTS: constexpr ElementsKind generates 'UINT8_ELEMENTS';
const INT8_ELEMENTS: constexpr ElementsKind generates 'INT8_ELEMENTS';
const UINT16_ELEMENTS:
constexpr ElementsKind generates 'UINT16_ELEMENTS';
const INT16_ELEMENTS: constexpr ElementsKind generates 'INT16_ELEMENTS';
const UINT32_ELEMENTS:
constexpr ElementsKind generates 'UINT32_ELEMENTS';
const INT32_ELEMENTS: constexpr ElementsKind generates 'INT32_ELEMENTS';
const FLOAT32_ELEMENTS:
constexpr ElementsKind generates 'FLOAT32_ELEMENTS';
const FLOAT64_ELEMENTS:
constexpr ElementsKind generates 'FLOAT64_ELEMENTS';
const UINT8_CLAMPED_ELEMENTS:
constexpr ElementsKind generates 'UINT8_CLAMPED_ELEMENTS';
const BIGUINT64_ELEMENTS:
constexpr ElementsKind generates 'BIGUINT64_ELEMENTS';
const BIGINT64_ELEMENTS:
constexpr ElementsKind generates 'BIGINT64_ELEMENTS';
const kNone:
constexpr AllocationFlags generates 'CodeStubAssembler::kNone';
const kDoubleAlignment: constexpr AllocationFlags
generates 'CodeStubAssembler::kDoubleAlignment';
const kPretenured:
constexpr AllocationFlags generates 'CodeStubAssembler::kPretenured';
const kAllowLargeObjectAllocation: constexpr AllocationFlags
generates 'CodeStubAssembler::kAllowLargeObjectAllocation';
const kWithSlackTracking: constexpr SlackTrackingMode
generates 'CodeStubAssembler::SlackTrackingMode::kWithSlackTracking';
const kNoSlackTracking: constexpr SlackTrackingMode
generates 'CodeStubAssembler::SlackTrackingMode::kNoSlackTracking';
const kFixedDoubleArrays: constexpr ExtractFixedArrayFlags
generates 'CodeStubAssembler::ExtractFixedArrayFlag::kFixedDoubleArrays';
const kAllFixedArrays: constexpr ExtractFixedArrayFlags
generates 'CodeStubAssembler::ExtractFixedArrayFlag::kAllFixedArrays';
const kFixedArrays: constexpr ExtractFixedArrayFlags
generates 'CodeStubAssembler::ExtractFixedArrayFlag::kFixedArrays';
const kFixedArrayMapRootIndex:
constexpr RootIndex generates 'RootIndex::kFixedArrayMap';
const kFixedCOWArrayMapRootIndex:
constexpr RootIndex generates 'RootIndex::kFixedCOWArrayMap';
const kEmptyByteArrayRootIndex:
constexpr RootIndex generates 'RootIndex::kEmptyByteArray';
const kEmptyFixedArrayRootIndex:
constexpr RootIndex generates 'RootIndex::kEmptyFixedArray';
const kTheHoleValueRootIndex:
constexpr RootIndex generates 'RootIndex::kTheHoleValue';
const kInvalidArrayBufferLength: constexpr MessageTemplate
generates 'MessageTemplate::kInvalidArrayBufferLength';
const kInvalidArrayLength: constexpr MessageTemplate
generates 'MessageTemplate::kInvalidArrayLength';
const kCalledNonCallable: constexpr MessageTemplate
generates 'MessageTemplate::kCalledNonCallable';
const kCalledOnNullOrUndefined: constexpr MessageTemplate
generates 'MessageTemplate::kCalledOnNullOrUndefined';
const kProtoObjectOrNull: constexpr MessageTemplate
generates 'MessageTemplate::kProtoObjectOrNull';
const kInvalidOffset: constexpr MessageTemplate
generates 'MessageTemplate::kInvalidOffset';
const kInvalidTypedArrayLength: constexpr MessageTemplate
generates 'MessageTemplate::kInvalidTypedArrayLength';
const kIteratorSymbolNonCallable: constexpr MessageTemplate
generates 'MessageTemplate::kIteratorSymbolNonCallable';
const kIteratorValueNotAnObject: constexpr MessageTemplate
generates 'MessageTemplate::kIteratorValueNotAnObject';
const kNotIterable: constexpr MessageTemplate
generates 'MessageTemplate::kNotIterable';
const kReduceNoInitial: constexpr MessageTemplate
generates 'MessageTemplate::kReduceNoInitial';
const kFirstArgumentNotRegExp: constexpr MessageTemplate
generates 'MessageTemplate::kFirstArgumentNotRegExp';
const kBigIntMixedTypes: constexpr MessageTemplate
generates 'MessageTemplate::kBigIntMixedTypes';
const kTypedArrayTooShort: constexpr MessageTemplate
generates 'MessageTemplate::kTypedArrayTooShort';
const kInvalidCountValue: constexpr MessageTemplate
generates 'MessageTemplate::kInvalidCountValue';
const kConstructorNotFunction: constexpr MessageTemplate
generates 'MessageTemplate::kConstructorNotFunction';
const kSymbolToString: constexpr MessageTemplate
generates 'MessageTemplate::kSymbolToString';
const kPropertyNotFunction: constexpr MessageTemplate
generates 'MessageTemplate::kPropertyNotFunction';
const kBigIntMaxLength: constexpr intptr
generates 'BigInt::kMaxLength';
const kBigIntTooBig: constexpr MessageTemplate
generates 'MessageTemplate::kBigIntTooBig';
const kMaxArrayIndex:
constexpr uint32 generates 'JSArray::kMaxArrayIndex';
const kArrayBufferMaxByteLength:
constexpr uintptr generates 'JSArrayBuffer::kMaxByteLength';
const kMaxTypedArrayInHeap:
constexpr int31 generates 'JSTypedArray::kMaxSizeInHeap';
const kMaxSafeInteger: constexpr float64 generates 'kMaxSafeInteger';
const kSmiMaxValue: constexpr uintptr generates 'kSmiMaxValue';
const kSmiMax: uintptr = kSmiMaxValue;
const kStringMaxLength: constexpr int31 generates 'String::kMaxLength';
const kFixedArrayMaxLength:
constexpr int31 generates 'FixedArray::kMaxLength';
const kObjectAlignmentMask: constexpr intptr
generates 'kObjectAlignmentMask';
const kMinAddedElementsCapacity:
constexpr int31 generates 'JSObject::kMinAddedElementsCapacity';
const kMaxCopyElements:
constexpr int31 generates 'JSArray::kMaxCopyElements';
const kMaxRegularHeapObjectSize: constexpr int31
generates 'kMaxRegularHeapObjectSize';
const kMaxNewSpaceFixedArrayElements: constexpr int31
generates 'FixedArray::kMaxRegularLength';
const kSloppyArgumentsArgumentsIndex: constexpr int31
generates 'SloppyArgumentsElements::kArgumentsIndex';
const kSloppyArgumentsContextIndex: constexpr int31
generates 'SloppyArgumentsElements::kContextIndex';
const kSloppyArgumentsParameterMapStart: constexpr int31
generates 'SloppyArgumentsElements::kParameterMapStart';
const kTruncateMinusZero: constexpr ToIntegerTruncationMode
generates 'CodeStubAssembler::ToIntegerTruncationMode::kTruncateMinusZero'
;
const kNotTypedArray: constexpr MessageTemplate
generates 'MessageTemplate::kNotTypedArray';
const kDetachedOperation: constexpr MessageTemplate
generates 'MessageTemplate::kDetachedOperation';
const kBadSortComparisonFunction: constexpr MessageTemplate
generates 'MessageTemplate::kBadSortComparisonFunction';
const kIncompatibleMethodReceiver: constexpr MessageTemplate
generates 'MessageTemplate::kIncompatibleMethodReceiver';
const kInvalidDataViewAccessorOffset: constexpr MessageTemplate
generates 'MessageTemplate::kInvalidDataViewAccessorOffset';
const kStrictReadOnlyProperty: constexpr MessageTemplate
generates 'MessageTemplate::kStrictReadOnlyProperty';
const kString: constexpr PrimitiveType
generates 'PrimitiveType::kString';
const kExternalPointerForOnHeapArray: constexpr RawPtr
generates 'JSTypedArray::ExternalPointerForOnHeapArray()';
const kNameDictionaryInitialCapacity:
constexpr int32 generates 'NameDictionary::kInitialCapacity';
type TheHole extends Oddball;
type Null extends Oddball;
type Undefined extends Oddball;
type True extends Oddball;
type False extends Oddball;
type EmptyString extends String;
type Boolean = True | False;
type NumberOrUndefined = Number | Undefined;
extern macro TheHoleConstant(): TheHole;
extern macro NullConstant(): Null;
extern macro UndefinedConstant(): Undefined;
extern macro TrueConstant(): True;
extern macro FalseConstant(): False;
extern macro Int32TrueConstant(): bool;
extern macro Int32FalseConstant(): bool;
extern macro EmptyStringConstant(): EmptyString;
extern macro LengthStringConstant(): String;
extern macro NanConstant(): NaN;
extern macro IteratorSymbolConstant(): Symbol;
const TheHole: TheHole = TheHoleConstant();
const Null: Null = NullConstant();
const Undefined: Undefined = UndefinedConstant();
const True: True = TrueConstant();
const False: False = FalseConstant();
const kEmptyString: EmptyString = EmptyStringConstant();
const kLengthString: String = LengthStringConstant();
const kNaN: NaN = NanConstant();
const true: constexpr bool generates 'true';
const false: constexpr bool generates 'false';
const kStrict: constexpr LanguageMode generates 'LanguageMode::kStrict';
const kSloppy: constexpr LanguageMode generates 'LanguageMode::kSloppy';
const SKIP_WRITE_BARRIER:
constexpr WriteBarrierMode generates 'SKIP_WRITE_BARRIER';
const UNSAFE_SKIP_WRITE_BARRIER:
constexpr WriteBarrierMode generates 'UNSAFE_SKIP_WRITE_BARRIER';
@generateCppClass
extern class AsyncGeneratorRequest extends Struct {
next: AsyncGeneratorRequest | Undefined;
resume_mode: Smi;
value: Object;
promise: JSPromise;
}
@generateCppClass
extern class SourceTextModuleInfoEntry extends Struct {
export_name: String | Undefined;
local_name: String | Undefined;
import_name: String | Undefined;
module_request: Smi;
cell_index: Smi;
beg_pos: Smi;
end_pos: Smi;
}
@generateCppClass
extern class PromiseCapability extends Struct {
promise: JSReceiver | Undefined;
resolve: Object;
reject: Object;
}
@generateCppClass
extern class PromiseReaction extends Struct {
next: PromiseReaction | Zero;
reject_handler: Callable | Undefined;
fulfill_handler: Callable | Undefined;
// Either a JSPromise (in case of native promises), a PromiseCapability
// (general case), or undefined (in case of await).
promise_or_capability: JSPromise | PromiseCapability | Undefined;
}
@abstract
@generateCppClass
extern class PromiseReactionJobTask extends Microtask {
argument: Object;
context: Context;
handler: Callable | Undefined;
// Either a JSPromise (in case of native promises), a PromiseCapability
// (general case), or undefined (in case of await).
promise_or_capability: JSPromise | PromiseCapability | Undefined;
}
@generateCppClass
extern class PromiseFulfillReactionJobTask extends PromiseReactionJobTask {
}
@generateCppClass
extern class PromiseRejectReactionJobTask extends PromiseReactionJobTask {
}
@generateCppClass
extern class PromiseResolveThenableJobTask extends Microtask {
context: Context;
promise_to_resolve: JSPromise;
then: JSReceiver;
thenable: JSReceiver;
}
@generateCppClass
extern class JSRegExp extends JSObject {
data: FixedArray | Undefined;
source: String | Undefined;
flags: Smi | Undefined;
}
extern transitioning macro AllocateJSIteratorResult(implicit context: Context)(
JSAny, Boolean): JSObject;
// Note: Although a condition for a FastJSRegExp is having a positive smi
// lastIndex (see RegExpBuiltinsAssembler::BranchIfFastRegExp), it is possible
// for this to change without transitioning the transient type. As a precaution,
// validate the lastIndex is positive smi when used in fast paths.
transient type FastJSRegExp extends JSRegExp;
extern operator '.global' macro
RegExpBuiltinsAssembler::FastFlagGetterGlobal(FastJSRegExp): bool;
extern operator '.unicode' macro
RegExpBuiltinsAssembler::FastFlagGetterUnicode(FastJSRegExp): bool;
extern operator '.lastIndex' macro
RegExpBuiltinsAssembler::FastLoadLastIndex(FastJSRegExp): Smi;
extern operator '.lastIndex=' macro
RegExpBuiltinsAssembler::FastStoreLastIndex(FastJSRegExp, Smi): void;
@hasSameInstanceTypeAsParent
extern class JSRegExpResult extends JSArray {
index: JSAny;
input: JSAny;
groups: JSAny;
}
@generateCppClass
extern class JSRegExpStringIterator extends JSObject {
// The [[IteratingRegExp]] internal property.
iterating_reg_exp: JSAny;
// The [[IteratedString]] internal property.
iterated_string: String;
flags: Smi;
}
const kRegExpMatchInfoFirstCaptureIndex:
constexpr int31 generates 'RegExpMatchInfo::kFirstCaptureIndex';
const kRegExpMatchInfoNumberOfCapturesIndex:
constexpr int31 generates 'RegExpMatchInfo::kNumberOfCapturesIndex';
macro GetStartOfCaptureIndex(captureIndex: constexpr int31): constexpr int31 {
return kRegExpMatchInfoFirstCaptureIndex + (captureIndex * 2);
}
@hasSameInstanceTypeAsParent
extern class RegExpMatchInfo extends FixedArray {
GetStartOfCapture(implicit context: Context)(captureIndex: constexpr int31):
Smi {
const index: constexpr int31 = GetStartOfCaptureIndex(captureIndex);
return UnsafeCast<Smi>(this.objects[index]);
}
GetEndOfCapture(implicit context: Context)(captureIndex: constexpr int31):
Smi {
const index: constexpr int31 = GetStartOfCaptureIndex(captureIndex) + 1;
return UnsafeCast<Smi>(this.objects[index]);
}
NumberOfCaptures(implicit context: Context)(): Smi {
return UnsafeCast<Smi>(this.objects[kRegExpMatchInfoNumberOfCapturesIndex]);
}
}
extern class AccessorInfo extends Struct {
name: Object;
flags: Smi;
expected_receiver_type: Object;
setter: NonNullForeign | Zero;
getter: NonNullForeign | Zero;
js_getter: NonNullForeign | Zero;
data: Object;
}
extern class AccessorPair extends Struct {
getter: Object;
setter: Object;
}
extern class BreakPoint extends Tuple2 {}
extern class BreakPointInfo extends Tuple2 {}
type CoverageInfo extends FixedArray;
extern class DebugInfo extends Struct {
shared_function_info: SharedFunctionInfo;
debugger_hints: Smi;
script: Undefined | Script;
original_bytecode_array: Undefined | BytecodeArray;
debug_bytecode_array: Undefined | BytecodeArray;
break_points: FixedArray;
flags: Smi;
coverage_info: CoverageInfo | Undefined;
}
extern class FeedbackVector extends HeapObject {
shared_function_info: SharedFunctionInfo;
// TODO(v8:9108): currently no support for MaybeObject in Torque
@noVerifier optimized_code_weak_or_smi: Object;
closure_feedback_cell_array: FixedArray;
length: int32;
invocation_count: int32;
profiler_ticks: int32;
// TODO(v8:9287) The padding is not necessary on platforms with 4 bytes
// tagged pointers, we should make it conditional; however, platform-specific
// interacts badly with GCMole, so we need to address that first.
padding: uint32;
}
extern class FeedbackCell extends Struct {
value: Undefined | FeedbackVector | FixedArray;
interrupt_budget: int32;
}
type AllocationSite extends Struct;
extern class AllocationMemento extends Struct {
allocation_site: AllocationSite;
}
extern class WasmModuleObject extends JSObject {
native_module: Foreign;
export_wrappers: FixedArray;
script: Script;
weak_instance_list: WeakArrayList;
asm_js_offset_table: ByteArray | Undefined;
break_point_infos: FixedArray | Undefined;
}
extern class WasmTableObject extends JSObject {
entries: FixedArray;
maximum_length: Smi | HeapNumber | Undefined;
dispatch_tables: FixedArray;
raw_type: Smi;
}
extern class WasmMemoryObject extends JSObject {
array_buffer: JSArrayBuffer;
maximum_pages: Smi;
instances: WeakArrayList | Undefined;
}
extern class WasmGlobalObject extends JSObject {
untagged_buffer: JSArrayBuffer | Undefined;
tagged_buffer: FixedArray | Undefined;
offset: Smi;
flags: Smi;
}
extern class WasmExceptionObject extends JSObject {
serialized_signature: ByteArray; // PodArray<wasm::ValueType>
exception_tag: HeapObject;
}
type WasmExportedFunction extends JSFunction;
extern class AsmWasmData extends Struct {
managed_native_module: Foreign; // Managed<wasm::NativeModule>
export_wrappers: FixedArray;
asm_js_offset_table: ByteArray;
uses_bitset: HeapNumber;
}
extern class JSFinalizationGroup extends JSObject {
native_context: NativeContext;
cleanup: Object;
active_cells: Undefined | WeakCell;
cleared_cells: Undefined | WeakCell;
key_map: Object;
next: Undefined | JSFinalizationGroup;
flags: Smi;
}
extern class JSFinalizationGroupCleanupIterator extends JSObject {
finalization_group: JSFinalizationGroup;
}
extern class WeakCell extends HeapObject {
finalization_group: Undefined | JSFinalizationGroup;
target: Undefined | JSReceiver;
holdings: Object;
prev: Undefined | WeakCell;
next: Undefined | WeakCell;
key: Object;
key_list_prev: Undefined | WeakCell;
key_list_next: Undefined | WeakCell;
}
extern class JSWeakRef extends JSObject { target: Undefined | JSReceiver; }
extern class BytecodeArray extends FixedArrayBase {
// TODO(v8:8983): bytecode array object sizes vary based on their contents.
constant_pool: FixedArray;
handler_table: ByteArray;
source_position_table: Undefined | ByteArray |
SourcePositionTableWithFrameCache;
frame_size: int32;
parameter_size: int32;
incoming_new_target_or_generator_register: int32;
osr_nesting_level: int8;
bytecode_age: int8;
}
extern macro Is64(): constexpr bool;
extern macro SelectBooleanConstant(bool): Boolean;
extern macro Print(constexpr string);
extern macro Print(constexpr string, Object);
extern macro Comment(constexpr string);
extern macro StaticAssert(bool);
extern macro Print(Object);
extern macro DebugBreak();
extern transitioning macro ToInteger_Inline(Context, JSAny): Number;
extern transitioning macro ToInteger_Inline(
Context, JSAny, constexpr ToIntegerTruncationMode): Number;
extern transitioning macro ToLength_Inline(Context, JSAny): Number;
extern transitioning macro ToNumber_Inline(Context, JSAny): Number;
extern transitioning macro ToSmiIndex(implicit context: Context)(JSAny):
PositiveSmi labels IfRangeError;
extern transitioning macro ToSmiLength(implicit context: Context)(JSAny):
PositiveSmi labels IfRangeError;
extern transitioning macro ToString_Inline(Context, JSAny): String;
extern transitioning macro ToThisString(implicit context: Context)(
JSAny, String): String;
extern transitioning macro ToThisValue(implicit context: Context)(
JSAny, constexpr PrimitiveType, constexpr string): JSAny;
extern transitioning macro GetProperty(implicit context: Context)(
JSAny, JSAny): JSAny;
extern transitioning builtin SetProperty(implicit context: Context)(
JSAny, JSAny, JSAny);
extern transitioning builtin SetPropertyInLiteral(implicit context: Context)(
JSAny, JSAny, JSAny);
extern transitioning builtin DeleteProperty(implicit context: Context)(
JSAny, JSAny | PrivateSymbol, LanguageMode): Boolean;
extern transitioning builtin HasProperty(implicit context: Context)(
JSAny, JSAny): Boolean;
extern transitioning macro HasProperty_Inline(implicit context: Context)(
JSReceiver, JSAny): Boolean;
extern builtin LoadIC(Context, JSAny, JSAny, Smi, FeedbackVector): JSAny;
extern macro ThrowRangeError(implicit context: Context)(
constexpr MessageTemplate): never;
extern macro ThrowRangeError(implicit context: Context)(
constexpr MessageTemplate, Object): never;
extern macro ThrowTypeError(implicit context: Context)(
constexpr MessageTemplate): never;
extern macro ThrowTypeError(implicit context: Context)(
constexpr MessageTemplate, constexpr string): never;
extern macro ThrowTypeError(implicit context: Context)(
constexpr MessageTemplate, Object): never;
extern macro ThrowTypeError(implicit context: Context)(
constexpr MessageTemplate, Object, Object): never;
extern macro ThrowTypeError(implicit context: Context)(
constexpr MessageTemplate, Object, Object, Object): never;
extern transitioning runtime ThrowTypeErrorIfStrict(implicit context: Context)(
Smi, Object, Object): void;
extern transitioning macro ThrowIfNotJSReceiver(implicit context: Context)(
JSAny, constexpr MessageTemplate, constexpr string): void;
extern macro ArraySpeciesCreate(Context, JSAny, Number): JSReceiver;
extern macro ArrayCreate(implicit context: Context)(Number): JSArray;
extern macro BuildAppendJSArray(
constexpr ElementsKind, FastJSArray, JSAny): void labels Bailout;
extern macro EnsureArrayPushable(Map): ElementsKind
labels Bailout;
extern macro EnsureArrayLengthWritable(Map) labels Bailout;
// TODO: Reduce duplication once varargs are supported in macros.
extern macro Construct(implicit context: Context)(
Constructor, JSAny): JSReceiver;
extern macro Construct(implicit context: Context)(
Constructor, JSAny, JSAny): JSReceiver;
extern macro Construct(implicit context: Context)(
Constructor, JSAny, JSAny, JSAny): JSReceiver;
extern macro ConstructWithTarget(implicit context: Context)(
Constructor, JSReceiver): JSReceiver;
extern macro ConstructWithTarget(implicit context: Context)(
Constructor, JSReceiver, JSAny): JSReceiver;
extern macro SpeciesConstructor(implicit context: Context)(
JSAny, JSReceiver): JSReceiver;
extern macro ConstructorBuiltinsAssembler::IsDictionaryMap(Map): bool;
extern macro CodeStubAssembler::AllocateNameDictionary(constexpr int32):
NameDictionary;
extern builtin ToObject(Context, JSAny): JSReceiver;
extern macro ToObject_Inline(Context, JSAny): JSReceiver;
extern macro IsNullOrUndefined(Object): bool;
extern macro IsTheHole(Object): bool;
extern macro IsString(HeapObject): bool;
transitioning builtin ToString(context: Context, o: JSAny): String {
return ToStringImpl(context, o);
}
extern transitioning runtime ToStringRT(Context, JSAny): String;
extern transitioning builtin NonPrimitiveToPrimitive_String(
Context, JSAny): JSPrimitive;
extern transitioning builtin NonPrimitiveToPrimitive_Default(
Context, JSAny): JSPrimitive;
transitioning macro ToPrimitiveDefault(implicit context: Context)(v: JSAny):
JSPrimitive {
typeswitch (v) {
case (v: JSReceiver): {
return NonPrimitiveToPrimitive_Default(context, v);
}
case (v: JSPrimitive): {
return v;
}
}
}
extern transitioning runtime NormalizeElements(Context, JSObject);
extern transitioning runtime TransitionElementsKindWithKind(
Context, JSObject, Smi);
extern macro LoadBufferObject(RawPtr, constexpr int32): Object;
extern macro LoadBufferPointer(RawPtr, constexpr int32): RawPtr;
extern macro LoadBufferSmi(RawPtr, constexpr int32): Smi;
extern runtime StringEqual(Context, String, String): Oddball;
extern builtin StringLessThan(Context, String, String): Boolean;
extern macro StringCharCodeAt(String, intptr): int32;
extern runtime StringCompareSequence(Context, String, String, Number): Boolean;
extern macro StringFromSingleCharCode(int32): String;
extern macro StrictEqual(JSAny, JSAny): Boolean;
extern macro SmiLexicographicCompare(Smi, Smi): Smi;
extern runtime ReThrow(Context, JSAny): never;
extern runtime ThrowInvalidStringLength(Context): never;
extern operator '==' macro WordEqual(RawPtr, RawPtr): bool;
extern operator '!=' macro WordNotEqual(RawPtr, RawPtr): bool;
extern operator '+' macro RawPtrAdd(RawPtr, intptr): RawPtr;
extern operator '+' macro RawPtrAdd(intptr, RawPtr): RawPtr;
extern operator '<' macro Int32LessThan(int32, int32): bool;
extern operator '<' macro Uint32LessThan(uint32, uint32): bool;
extern operator '>' macro Int32GreaterThan(int32, int32): bool;
extern operator '>' macro Uint32GreaterThan(uint32, uint32): bool;
extern operator '<=' macro Int32LessThanOrEqual(int32, int32): bool;
extern operator '<=' macro Uint32LessThanOrEqual(uint32, uint32): bool;
extern operator '>=' macro Int32GreaterThanOrEqual(int32, int32): bool;
extern operator '>=' macro Uint32GreaterThanOrEqual(uint32, uint32): bool;
extern operator '==' macro SmiEqual(Smi, Smi): bool;
extern operator '!=' macro SmiNotEqual(Smi, Smi): bool;
extern operator '<' macro SmiLessThan(Smi, Smi): bool;
extern operator '<=' macro SmiLessThanOrEqual(Smi, Smi): bool;
extern operator '>' macro SmiGreaterThan(Smi, Smi): bool;
extern operator '>=' macro SmiGreaterThanOrEqual(Smi, Smi): bool;
extern operator '==' macro ElementsKindEqual(
constexpr ElementsKind, constexpr ElementsKind): constexpr bool;
extern operator '==' macro ElementsKindEqual(ElementsKind, ElementsKind): bool;
operator '!=' macro ElementsKindNotEqual(
k1: ElementsKind, k2: ElementsKind): bool {
return !ElementsKindEqual(k1, k2);
}
extern macro IsElementsKindLessThanOrEqual(
ElementsKind, constexpr ElementsKind): bool;
extern macro IsElementsKindGreaterThan(
ElementsKind, constexpr ElementsKind): bool;
extern macro IsFastElementsKind(constexpr ElementsKind): constexpr bool;
extern macro IsDoubleElementsKind(constexpr ElementsKind): constexpr bool;
extern macro IsFastAliasedArgumentsMap(implicit context: Context)(Map): bool;
extern macro IsSlowAliasedArgumentsMap(implicit context: Context)(Map): bool;
extern macro IsSloppyArgumentsMap(implicit context: Context)(Map): bool;
extern macro IsStrictArgumentsMap(implicit context: Context)(Map): bool;
extern macro SmiAbove(Smi, Smi): bool;
extern operator '==' macro WordEqual(intptr, intptr): bool;
extern operator '==' macro WordEqual(uintptr, uintptr): bool;
extern operator '!=' macro WordNotEqual(intptr, intptr): bool;
extern operator '!=' macro WordNotEqual(uintptr, uintptr): bool;
extern operator '<' macro IntPtrLessThan(intptr, intptr): bool;
extern operator '<' macro UintPtrLessThan(uintptr, uintptr): bool;
extern operator '>' macro IntPtrGreaterThan(intptr, intptr): bool;
extern operator '>' macro UintPtrGreaterThan(uintptr, uintptr): bool;
extern operator '<=' macro IntPtrLessThanOrEqual(intptr, intptr): bool;
extern operator '<=' macro UintPtrLessThanOrEqual(uintptr, uintptr): bool;
extern operator '>=' macro IntPtrGreaterThanOrEqual(intptr, intptr): bool;
extern operator '>=' macro UintPtrGreaterThanOrEqual(uintptr, uintptr): bool;
extern operator '~' macro WordNot(intptr): intptr;
extern operator '~' macro WordNot(uintptr): uintptr;
extern operator '~' macro ConstexprWordNot(constexpr intptr): constexpr intptr;
extern operator '~' macro ConstexprWordNot(constexpr uintptr):
constexpr uintptr;
extern operator '==' macro Float64Equal(float64, float64): bool;
extern operator '!=' macro Float64NotEqual(float64, float64): bool;
extern operator '>' macro Float64GreaterThan(float64, float64): bool;
extern operator '<' macro Float64LessThan(float64, float64): bool;
extern macro BranchIfNumberEqual(Number, Number): never
labels Taken, NotTaken;
operator '==' macro IsNumberEqual(a: Number, b: Number): bool {
BranchIfNumberEqual(a, b) otherwise return true, return false;
}
operator '!=' macro IsNumberNotEqual(a: Number, b: Number): bool {
return !(a == b);
}
extern macro BranchIfNumberLessThan(Number, Number): never
labels Taken, NotTaken;
operator '<' macro NumberIsLessThan(a: Number, b: Number): bool {
BranchIfNumberLessThan(a, b) otherwise return true, return false;
}
extern macro BranchIfNumberLessThanOrEqual(Number, Number): never
labels Taken, NotTaken;
operator '<=' macro NumberIsLessThanOrEqual(a: Number, b: Number): bool {
BranchIfNumberLessThanOrEqual(a, b) otherwise return true, return false;
}
operator '>' macro NumberIsGreaterThan(a: Number, b: Number): bool {
return b < a;
}
operator '>=' macro NumberIsGreaterThanOrEqual(a: Number, b: Number): bool {
return b <= a;
}
extern macro BranchIfFloat64IsNaN(float64): never
labels Taken, NotTaken;
macro Float64IsNaN(n: float64): bool {
BranchIfFloat64IsNaN(n) otherwise return true, return false;
}
// The type of all tagged values that can safely be compared with TaggedEqual.
type TaggedWithIdentity =
JSReceiver | FixedArrayBase | Oddball | Map | EmptyString;
extern operator '==' macro TaggedEqual(TaggedWithIdentity, Object): bool;
extern operator '==' macro TaggedEqual(Object, TaggedWithIdentity): bool;
extern operator '==' macro TaggedEqual(
TaggedWithIdentity, TaggedWithIdentity): bool;
extern operator '!=' macro TaggedNotEqual(TaggedWithIdentity, Object): bool;
extern operator '!=' macro TaggedNotEqual(Object, TaggedWithIdentity): bool;
extern operator '!=' macro TaggedNotEqual(
TaggedWithIdentity, TaggedWithIdentity): bool;
// Do not overload == and != if it is unclear if object identity is the right
// equality.
extern macro TaggedEqual(Object, Object): bool;
extern macro TaggedNotEqual(Object, Object): bool;
extern operator '+' macro SmiAdd(Smi, Smi): Smi;
extern operator '-' macro SmiSub(Smi, Smi): Smi;
extern operator '&' macro SmiAnd(Smi, Smi): Smi;
extern operator '|' macro SmiOr(Smi, Smi): Smi;
extern operator '<<' macro SmiShl(Smi, constexpr int31): Smi;
extern operator '>>' macro SmiSar(Smi, constexpr int31): Smi;
extern operator '+' macro IntPtrAdd(intptr, intptr): intptr;
extern operator '+' macro ConstexprIntPtrAdd(
constexpr intptr, constexpr intptr): constexpr intptr;
extern operator '+' macro ConstexprUintPtrAdd(
constexpr uintptr, constexpr uintptr): constexpr intptr;
extern operator '-' macro IntPtrSub(intptr, intptr): intptr;
extern operator '*' macro IntPtrMul(intptr, intptr): intptr;
extern operator '/' macro IntPtrDiv(intptr, intptr): intptr;
extern operator '<<' macro WordShl(intptr, intptr): intptr;
extern operator '>>' macro WordSar(intptr, intptr): intptr;
extern operator '&' macro WordAnd(intptr, intptr): intptr;
extern operator '|' macro WordOr(intptr, intptr): intptr;
extern operator '+' macro UintPtrAdd(uintptr, uintptr): uintptr;
extern operator '-' macro UintPtrSub(uintptr, uintptr): uintptr;
extern operator '<<' macro WordShl(uintptr, uintptr): uintptr;
extern operator '>>>' macro WordShr(uintptr, uintptr): uintptr;
extern operator '&' macro WordAnd(uintptr, uintptr): uintptr;
extern operator '|' macro WordOr(uintptr, uintptr): uintptr;
extern operator '+' macro Int32Add(int32, int32): int32;
extern operator '+' macro ConstexprUint32Add(
constexpr uint32, constexpr int32): constexpr uint32;
extern operator '+' macro ConstexprInt31Add(
constexpr int31, constexpr int31): constexpr int31;
extern operator '*' macro ConstexprInt31Mul(
constexpr int31, constexpr int31): constexpr int31;
extern operator '-' macro Int32Sub(int32, int32): int32;
extern operator '*' macro Int32Mul(int32, int32): int32;
extern operator '/' macro Int32Div(int32, int32): int32;
extern operator '%' macro Int32Mod(int32, int32): int32;
extern operator '&' macro Word32And(int32, int32): int32;
extern operator '&' macro Word32And(uint32, uint32): uint32;
extern operator '==' macro
ConstexprInt31Equal(constexpr int31, constexpr int31): constexpr bool;
extern operator '!=' macro
ConstexprInt31NotEqual(constexpr int31, constexpr int31): constexpr bool;
extern operator '>=' macro
ConstexprInt31GreaterThanEqual(
constexpr int31, constexpr int31): constexpr bool;
extern operator '==' macro Word32Equal(int32, int32): bool;
extern operator '==' macro Word32Equal(uint32, uint32): bool;
extern operator '!=' macro Word32NotEqual(int32, int32): bool;
extern operator '!=' macro Word32NotEqual(uint32, uint32): bool;
extern operator '>>>' macro Word32Shr(uint32, uint32): uint32;
extern operator '<<' macro Word32Shl(int32, int32): int32;
extern operator '<<' macro Word32Shl(uint32, uint32): uint32;
extern operator '|' macro Word32Or(int32, int32): int32;
extern operator '|' macro Word32Or(uint32, uint32): uint32;
extern operator '&' macro Word32And(bool, bool): bool;
extern operator '|' macro Word32Or(bool, bool): bool;
extern operator '==' macro Word32Equal(bool, bool): bool;
extern operator '!=' macro Word32NotEqual(bool, bool): bool;
extern operator '+' macro Float64Add(float64, float64): float64;
extern operator '-' macro Float64Sub(float64, float64): float64;
extern operator '*' macro Float64Mul(float64, float64): float64;
extern operator '/' macro Float64Div(float64, float64): float64;
extern operator '+' macro NumberAdd(Number, Number): Number;
extern operator '-' macro NumberSub(Number, Number): Number;
extern macro NumberMin(Number, Number): Number;
extern macro NumberMax(Number, Number): Number;
macro Min(x: Number, y: Number): Number {
return NumberMin(x, y);
}
macro Max(x: Number, y: Number): Number {
return NumberMax(x, y);
}
extern macro TryIntPtrAdd(intptr, intptr): intptr labels Overflow;
extern macro TryIntPtrSub(intptr, intptr): intptr labels Overflow;
extern macro TryInt32Mul(int32, int32): int32 labels Overflow;
extern operator '<<' macro ConstexprUintPtrShl(
constexpr uintptr, constexpr int31): constexpr uintptr;
extern operator '>>>' macro ConstexprUintPtrShr(
constexpr uintptr, constexpr int31): constexpr uintptr;
extern macro SmiMax(Smi, Smi): Smi;
extern macro SmiMin(Smi, Smi): Smi;
extern macro SmiMul(Smi, Smi): Number;
extern macro SmiMod(Smi, Smi): Number;
extern macro IntPtrMax(intptr, intptr): intptr;
extern macro IntPtrMin(intptr, intptr): intptr;
extern operator '!' macro ConstexprBoolNot(constexpr bool): constexpr bool;
extern operator '!' macro Word32BinaryNot(bool): bool;
extern operator '!' macro IsFalse(Boolean): bool;
extern operator '.instanceType' macro LoadInstanceType(HeapObject):
InstanceType;
extern operator '.length_intptr' macro LoadStringLengthAsWord(String): intptr;
extern operator '.length_uint32' macro LoadStringLengthAsWord32(String): uint32;
extern operator '.length_smi' macro LoadStringLengthAsSmi(String): Smi;
extern builtin StringAdd_CheckNone(implicit context: Context)(
String, String): String;
operator '+' macro StringAdd(implicit context: Context)(
a: String, b: String): String {
return StringAdd_CheckNone(a, b);
}
extern macro TaggedIsSmi(Object): bool;
extern macro TaggedIsNotSmi(Object): bool;
extern macro TaggedIsPositiveSmi(Object): bool;
extern macro IsValidPositiveSmi(intptr): bool;
extern macro IsInteger(HeapNumber): bool;
extern macro HeapObjectToJSDataView(HeapObject): JSDataView
labels CastError;
extern macro HeapObjectToJSProxy(HeapObject): JSProxy
labels CastError;
extern macro HeapObjectToJSStringIterator(HeapObject): JSStringIterator
labels CastError;
extern macro HeapObjectToJSArrayBuffer(HeapObject): JSArrayBuffer
labels CastError;
extern macro TaggedToHeapObject(Object): HeapObject
labels CastError;
extern macro TaggedToSmi(Object): Smi
labels CastError;
extern macro TaggedToPositiveSmi(Object): PositiveSmi
labels CastError;
extern macro TaggedToDirectString(Object): DirectString
labels CastError;
extern macro HeapObjectToJSArray(HeapObject): JSArray
labels CastError;
extern macro HeapObjectToCallable(HeapObject): Callable
labels CastError;
extern macro HeapObjectToFixedArray(HeapObject): FixedArray
labels CastError;
extern macro HeapObjectToFixedDoubleArray(HeapObject): FixedDoubleArray
labels CastError;
extern macro HeapObjectToString(HeapObject): String
labels CastError;
extern macro HeapObjectToConstructor(HeapObject): Constructor
labels CastError;
extern macro HeapObjectToHeapNumber(HeapObject): HeapNumber
labels CastError;
extern macro HeapObjectToSloppyArgumentsElements(HeapObject):
SloppyArgumentsElements
labels CastError;
extern macro HeapObjectToRegExpMatchInfo(HeapObject):
RegExpMatchInfo labels CastError;
extern macro TaggedToNumber(Object): Number
labels CastError;
macro Cast<A: type>(implicit context: Context)(o: Object): A
labels CastError {
return Cast<A>(TaggedToHeapObject(o) otherwise CastError)
otherwise CastError;
}
Cast<Smi>(o: Object): Smi
labels CastError {
return TaggedToSmi(o) otherwise CastError;
}
Cast<PositiveSmi>(o: Object): PositiveSmi
labels CastError {
return TaggedToPositiveSmi(o) otherwise CastError;
}
Cast<Number>(o: Object): Number
labels CastError {
return TaggedToNumber(o) otherwise CastError;
}
Cast<Undefined>(o: Object): Undefined
labels CastError {
if (o != Undefined) goto CastError;
return %RawDownCast<Undefined>(o);
}
Cast<Numeric>(o: Object): Numeric labels CastError {
typeswitch (o) {
case (o: Number): {
return o;
}
case (o: BigInt): {
return o;
}
case (HeapObject): {
goto CastError;
}
}
}
Cast<TheHole>(o: Object): TheHole labels CastError {
if (o == TheHole) return %RawDownCast<TheHole>(o);
goto CastError;
}
Cast<TheHole>(o: HeapObject): TheHole labels CastError {
const o: Object = o;
return Cast<TheHole>(o) otherwise CastError;
}
Cast<True>(o: Object): True labels CastError {
if (o == True) return %RawDownCast<True>(o);
goto CastError;
}
Cast<True>(o: HeapObject): True labels CastError {
const o: Object = o;
return Cast<True>(o) otherwise CastError;
}
Cast<False>(o: Object): False labels CastError {
if (o == False) return %RawDownCast<False>(o);
goto CastError;
}
Cast<False>(o: HeapObject): False labels CastError {
const o: Object = o;
return Cast<False>(o) otherwise CastError;
}
Cast<Boolean>(o: Object): Boolean labels CastError {
typeswitch (o) {
case (o: True): {
return o;
}
case (o: False): {
return o;
}
case (Object): {
goto CastError;
}
}
}
Cast<Boolean>(o: HeapObject): Boolean labels CastError {
const o: Object = o;
return Cast<Boolean>(o) otherwise CastError;
}
// TODO(tebbi): These trivial casts for union types should be generated
// automatically.
Cast<JSPrimitive>(o: Object): JSPrimitive labels CastError {
typeswitch (o) {
case (o: Numeric): {
return o;
}
case (o: String): {
return o;
}
case (o: Symbol): {
return o;
}
case (o: Boolean): {
return o;
}
case (o: Undefined): {
return o;
}
case (o: Null): {
return o;
}
case (Object): {
goto CastError;
}
}
}
Cast<JSAny>(o: Object): JSAny labels CastError {
typeswitch (o) {
case (o: JSPrimitive): {
return o;
}
case (o: JSReceiver): {
return o;
}
case (Object): {
goto CastError;
}
}
}
Cast<JSAny | TheHole>(o: Object): JSAny | TheHole labels CastError {
typeswitch (o) {
case (o: JSAny): {
return o;
}
case (o: TheHole): {
return o;
}
case (Object): {
goto CastError;
}
}
}
Cast<Number | TheHole>(o: Object): Number | TheHole labels CastError {
typeswitch (o) {
case (o: Number): {
return o;
}
case (o: TheHole): {
return o;
}
case (Object): {
goto CastError;
}
}
}
macro Cast<A: type>(o: HeapObject): A
labels CastError;
Cast<HeapObject>(o: HeapObject): HeapObject
labels _CastError {
return o;
}
Cast<Null>(o: HeapObject): Null
labels CastError {
if (o != Null) goto CastError;
return %RawDownCast<Null>(o);
}
Cast<Undefined>(o: HeapObject): Undefined
labels CastError {
const o: Object = o;
return Cast<Undefined>(o) otherwise CastError;
}
Cast<FixedArray>(o: HeapObject): FixedArray
labels CastError {
return HeapObjectToFixedArray(o) otherwise CastError;
}
Cast<FixedDoubleArray>(o: HeapObject): FixedDoubleArray
labels CastError {
return HeapObjectToFixedDoubleArray(o) otherwise CastError;
}
Cast<SloppyArgumentsElements>(o: HeapObject): SloppyArgumentsElements
labels CastError {
return HeapObjectToSloppyArgumentsElements(o) otherwise CastError;
}
Cast<JSDataView>(o: HeapObject): JSDataView
labels CastError {
return HeapObjectToJSDataView(o) otherwise CastError;
}
Cast<JSProxy>(o: HeapObject): JSProxy
labels CastError {
return HeapObjectToJSProxy(o) otherwise CastError;
}
Cast<JSStringIterator>(o: HeapObject): JSStringIterator
labels CastError {
return HeapObjectToJSStringIterator(o) otherwise CastError;
}
Cast<JSTypedArray>(o: HeapObject): JSTypedArray
labels CastError {
if (IsJSTypedArray(o)) return %RawDownCast<JSTypedArray>(o);
goto CastError;
}
Cast<JSTypedArray>(implicit context: Context)(o: Object): JSTypedArray
labels CastError {
const heapObject = Cast<HeapObject>(o) otherwise CastError;
return Cast<JSTypedArray>(heapObject) otherwise CastError;
}
Cast<Callable>(o: HeapObject): Callable
labels CastError {
return HeapObjectToCallable(o) otherwise CastError;
}
Cast<Undefined | Callable>(o: HeapObject): Undefined | Callable
labels CastError {
if (o == Undefined) return Undefined;
return HeapObjectToCallable(o) otherwise CastError;
}
Cast<JSArray>(o: HeapObject): JSArray
labels CastError {
return HeapObjectToJSArray(o) otherwise CastError;
}
Cast<JSArrayBuffer>(o: HeapObject): JSArrayBuffer
labels CastError {
return HeapObjectToJSArrayBuffer(o) otherwise CastError;
}
Cast<Context>(o: HeapObject): Context
labels CastError {
if (IsContext(o)) return %RawDownCast<Context>(o);
goto CastError;
}
Cast<NativeContext>(o: HeapObject): NativeContext
labels CastError {
if (IsNativeContext(o)) return %RawDownCast<NativeContext>(o);
goto CastError;
}
Cast<JSObject>(o: HeapObject): JSObject
labels CastError {
if (IsJSObject(o)) return %RawDownCast<JSObject>(o);
goto CastError;
}
Cast<NumberDictionary>(o: HeapObject): NumberDictionary
labels CastError {
if (IsNumberDictionary(o)) return %RawDownCast<NumberDictionary>(o);
goto CastError;
}
Cast<String>(o: HeapObject): String
labels CastError {
return HeapObjectToString(o) otherwise CastError;
}
Cast<Oddball>(o: HeapObject): Oddball
labels CastError {
if (IsOddball(o)) return %RawDownCast<Oddball>(o);
goto CastError;
}
Cast<Symbol>(o: HeapObject): Symbol
labels CastError {
if (IsSymbol(o)) return %RawDownCast<Symbol>(o);
goto CastError;
}
macro Cast<T: type>(o: Symbol): T labels CastError;
Cast<PublicSymbol>(o: Symbol): PublicSymbol labels CastError {
if (IsPrivateSymbol(o)) goto CastError;
return %RawDownCast<PublicSymbol>(o);
}
Cast<PrivateSymbol>(o: Symbol): PrivateSymbol labels CastError {
if (IsPrivateSymbol(o)) {
return %RawDownCast<PrivateSymbol>(o);
}
goto CastError;
}
Cast<PublicSymbol>(o: HeapObject): PublicSymbol labels CastError {
const o = Cast<Symbol>(o) otherwise CastError;
return Cast<PublicSymbol>(o) otherwise CastError;
}
Cast<PrivateSymbol>(o: HeapObject): PrivateSymbol labels CastError {
const o = Cast<Symbol>(o) otherwise CastError;
return Cast<PrivateSymbol>(o) otherwise CastError;
}
Cast<DirectString>(o: HeapObject): DirectString
labels CastError {
return TaggedToDirectString(o) otherwise CastError;
}
Cast<Constructor>(o: HeapObject): Constructor
labels CastError {
return HeapObjectToConstructor(o) otherwise CastError;
}
Cast<HeapNumber>(o: HeapObject): HeapNumber
labels CastError {
if (IsHeapNumber(o)) return %RawDownCast<HeapNumber>(o);
goto CastError;
}
Cast<BigInt>(o: HeapObject): BigInt labels CastError {
if (IsBigInt(o)) return %RawDownCast<BigInt>(o);
goto CastError;
}
Cast<JSRegExp>(o: HeapObject): JSRegExp
labels CastError {
if (IsJSRegExp(o)) return %RawDownCast<JSRegExp>(o);
goto CastError;
}
Cast<Map>(implicit context: Context)(o: HeapObject): Map
labels CastError {
if (IsMap(o)) return %RawDownCast<Map>(o);
goto CastError;
}
Cast<JSPrimitiveWrapper>(o: HeapObject): JSPrimitiveWrapper
labels CastError {
if (IsJSPrimitiveWrapper(o)) return %RawDownCast<JSPrimitiveWrapper>(o);
goto CastError;
}
Cast<JSArgumentsObjectWithLength>(implicit context: Context)(o: HeapObject):
JSArgumentsObjectWithLength
labels CastError {
const map: Map = o.map;
try {
if (IsFastAliasedArgumentsMap(map)) goto True;
if (IsSloppyArgumentsMap(map)) goto True;
if (IsStrictArgumentsMap(map)) goto True;
if (IsSlowAliasedArgumentsMap(map)) goto True;
goto CastError;
}
label True {
return %RawDownCast<JSArgumentsObjectWithLength>(o);
}
}
Cast<FastJSRegExp>(implicit context: Context)(o: HeapObject): FastJSRegExp
labels CastError {
// TODO(jgruber): Remove or redesign this. There is no single 'fast' regexp,
// the conditions to make a regexp object fast differ based on the callsite.
// For now, run the strict variant since replace (the only current callsite)
// accesses flag getters.
if (regexp::IsFastRegExpStrict(o)) {
return %RawDownCast<FastJSRegExp>(o);
}
goto CastError;
}
Cast<FastJSArray>(implicit context: Context)(o: HeapObject): FastJSArray
labels CastError {
const map: Map = o.map;
if (!IsJSArrayMap(map)) goto CastError;
// Bailout if receiver has slow elements.
const elementsKind: ElementsKind = LoadMapElementsKind(map);
if (!IsFastElementsKind(elementsKind)) goto CastError;
// Verify that our prototype is the initial array prototype.
if (!IsPrototypeInitialArrayPrototype(map)) goto CastError;
if (IsNoElementsProtectorCellInvalid()) goto CastError;
return %RawDownCast<FastJSArray>(o);
}
Cast<FastJSArrayForRead>(implicit context: Context)(o: HeapObject):
FastJSArrayForRead
labels CastError {
const map: Map = o.map;
if (!IsJSArrayMap(map)) goto CastError;
// Bailout if receiver has slow elements.
const elementsKind: ElementsKind = LoadMapElementsKind(map);
if (!IsElementsKindLessThanOrEqual(
elementsKind, LAST_ANY_NONEXTENSIBLE_ELEMENTS_KIND))
goto CastError;
// Verify that our prototype is the initial array prototype.
if (!IsPrototypeInitialArrayPrototype(map)) goto CastError;
if (IsNoElementsProtectorCellInvalid()) goto CastError;
return %RawDownCast<FastJSArrayForRead>(o);
}
Cast<FastJSArrayForCopy>(implicit context: Context)(o: HeapObject):
FastJSArrayForCopy
labels CastError {
if (IsArraySpeciesProtectorCellInvalid()) goto CastError;
const a = Cast<FastJSArray>(o) otherwise CastError;
return %RawDownCast<FastJSArrayForCopy>(a);
}
Cast<FastJSArrayWithNoCustomIteration>(implicit context: Context)(
o: HeapObject): FastJSArrayWithNoCustomIteration
labels CastError {
if (IsArrayIteratorProtectorCellInvalid()) goto CastError;
const a = Cast<FastJSArray>(o) otherwise CastError;
return %RawDownCast<FastJSArrayWithNoCustomIteration>(a);
}
Cast<FastJSArrayForReadWithNoCustomIteration>(implicit context: Context)(
o: HeapObject): FastJSArrayForReadWithNoCustomIteration
labels CastError {
if (IsArrayIteratorProtectorCellInvalid()) goto CastError;
const a = Cast<FastJSArrayForRead>(o) otherwise CastError;
return %RawDownCast<FastJSArrayForReadWithNoCustomIteration>(a);
}
Cast<JSReceiver>(o: HeapObject): JSReceiver
labels CastError {
if (IsJSReceiver(o)) return %RawDownCast<JSReceiver>(o);
goto CastError;
}
Cast<JSFunction>(implicit context: Context)(o: HeapObject): JSFunction
labels CastError {
if (IsJSFunction(o)) return %RawDownCast<JSFunction>(o);
goto CastError;
}
extern macro IsDebugInfo(HeapObject): bool;
Cast<DebugInfo>(implicit context: Context)(o: HeapObject): DebugInfo
labels CastError {
if (IsDebugInfo(o)) return %RawDownCast<DebugInfo>(o);
goto CastError;
}
extern macro IsCoverageInfo(HeapObject): bool;
Cast<CoverageInfo>(implicit context: Context)(o: HeapObject): CoverageInfo
labels CastError {
// TODO(jgruber): Assign an instance type.
if (IsFixedArray(o)) return %RawDownCast<CoverageInfo>(o);
goto CastError;
}
Cast<JSReceiver | Null>(o: HeapObject): JSReceiver | Null
labels CastError {
typeswitch (o) {
case (o: Null): {
return o;
}
case (o: JSReceiver): {
return o;
}
case (HeapObject): {
goto CastError;
}
}
}
extern macro AllocateHeapNumberWithValue(float64): HeapNumber;
extern macro ChangeInt32ToTagged(int32): Number;
extern macro ChangeUint32ToTagged(uint32): Number;
extern macro ChangeUintPtrToFloat64(uintptr): float64;
extern macro ChangeUintPtrToTagged(uintptr): Number;
extern macro Unsigned(int32): uint32;
extern macro Unsigned(int16): uint16;
extern macro Unsigned(int8): uint8;
extern macro Unsigned(intptr): uintptr;
extern macro Unsigned(RawPtr): uintptr;
extern macro Signed(uint32): int32;
extern macro Signed(uint16): int16;
extern macro Signed(uint8): int8;
extern macro Signed(uintptr): intptr;
extern macro Signed(RawPtr): intptr;
extern macro TruncateIntPtrToInt32(intptr): int32;
extern macro SmiTag(intptr): Smi;
extern macro SmiFromInt32(int32): Smi;
extern macro SmiUntag(Smi): intptr;
extern macro SmiToInt32(Smi): int32;
extern macro RoundIntPtrToFloat64(intptr): float64;
extern macro ChangeFloat32ToFloat64(float32): float64;
extern macro ChangeNumberToFloat64(Number): float64;
extern macro ChangeFloat64ToUintPtr(float64): uintptr;
extern macro ChangeInt32ToIntPtr(int32): intptr; // Sign-extends.
extern macro ChangeUint32ToWord(uint32): uintptr; // Doesn't sign-extend.
extern macro LoadNativeContext(Context): NativeContext;
extern macro TruncateFloat64ToFloat32(float64): float32;
extern macro TruncateHeapNumberValueToWord32(HeapNumber): int32;
extern macro LoadJSArrayElementsMap(constexpr ElementsKind, NativeContext): Map;
extern macro LoadJSArrayElementsMap(ElementsKind, NativeContext): Map;
extern macro ChangeNonnegativeNumberToUintPtr(Number): uintptr;
extern macro TryNumberToUintPtr(Number): uintptr labels IfNegative;
extern macro NumberConstant(constexpr float64): Number;
extern macro NumberConstant(constexpr int32): Number;
extern macro NumberConstant(constexpr uint32): Number;
extern macro IntPtrConstant(constexpr int31): intptr;
extern macro IntPtrConstant(constexpr int32): intptr;
extern macro Int32Constant(constexpr int31): int31;
extern macro Int32Constant(constexpr int32): int32;
extern macro Float64Constant(constexpr int31): float64;
extern macro Float64Constant(constexpr float64): float64;
extern macro SmiConstant(constexpr int31): Smi;
extern macro SmiConstant(constexpr Smi): Smi;
extern macro SmiConstant(constexpr MessageTemplate): Smi;
extern macro SmiConstant(constexpr LanguageMode): Smi;
extern macro BoolConstant(constexpr bool): bool;
extern macro StringConstant(constexpr string): String;
extern macro Int32Constant(constexpr ElementsKind): ElementsKind;
extern macro IntPtrConstant(constexpr NativeContextSlot): NativeContextSlot;
extern macro IntPtrConstant(constexpr ContextSlot): ContextSlot;
extern macro IntPtrConstant(constexpr intptr): intptr;
extern macro PointerConstant(constexpr RawPtr): RawPtr;
extern macro SingleCharacterStringConstant(constexpr string): String;
extern macro Float64SilenceNaN(float64): float64;
extern macro BitcastWordToTaggedSigned(intptr): Smi;
extern macro BitcastWordToTaggedSigned(uintptr): Smi;
extern macro BitcastWordToTagged(intptr): Object;
extern macro BitcastWordToTagged(uintptr): Object;
extern macro BitcastTaggedToWord(Tagged): intptr;
intrinsic %FromConstexpr<To: type, From: type>(b: From): To;
macro FromConstexpr<To: type, From: type>(o: From): To;
FromConstexpr<int31, constexpr int31>(i: constexpr int31): int31 {
return %FromConstexpr<int31>(i);
}
FromConstexpr<int32, constexpr int31>(i: constexpr int31): int32 {
return %FromConstexpr<int32>(i);
}
FromConstexpr<int32, constexpr int32>(i: constexpr int32): int32 {
return %FromConstexpr<int32>(i);
}
FromConstexpr<intptr, constexpr int31>(i: constexpr int31): intptr {
return %FromConstexpr<intptr>(i);
}
FromConstexpr<intptr, constexpr int32>(i: constexpr int32): intptr {
return %FromConstexpr<intptr>(i);
}
FromConstexpr<intptr, constexpr intptr>(i: constexpr intptr): intptr {
return %FromConstexpr<intptr>(i);
}
FromConstexpr<uintptr, constexpr uintptr>(i: constexpr uintptr): uintptr {
return %FromConstexpr<uintptr>(i);
}
FromConstexpr<Smi, constexpr int31>(i: constexpr int31): Smi {
return %FromConstexpr<Smi>(i);
}
FromConstexpr<PositiveSmi, constexpr int31>(i: constexpr int31): PositiveSmi {
assert(i >= 0);
return %FromConstexpr<PositiveSmi>(i);
}
FromConstexpr<String, constexpr string>(s: constexpr string): String {
return %FromConstexpr<String>(s);
}
FromConstexpr<Number, constexpr uint32>(i: constexpr uint32): Number {
return %FromConstexpr<Number>(i);
}
FromConstexpr<Number, constexpr int32>(i: constexpr int32): Number {
return %FromConstexpr<Number>(i);
}
FromConstexpr<Number, constexpr float64>(f: constexpr float64): Number {
return %FromConstexpr<Number>(f);
}
FromConstexpr<Number, constexpr int31>(i: constexpr int31): Number {
return %FromConstexpr<Number>(i);
}
FromConstexpr<Number, constexpr Smi>(s: constexpr Smi): Number {
return SmiConstant(s);
}
FromConstexpr<Smi, constexpr Smi>(s: constexpr Smi): Smi {
return SmiConstant(s);
}
FromConstexpr<uint32, constexpr int31>(i: constexpr int31): uint32 {
return Unsigned(Int32Constant(i));
}
FromConstexpr<uintptr, constexpr int31>(i: constexpr int31): uintptr {
return ChangeUint32ToWord(i);
}
FromConstexpr<float64, constexpr int31>(i: constexpr int31): float64 {
return Float64Constant(i);
}
FromConstexpr<float64, constexpr float64>(i: constexpr float64): float64 {
return Float64Constant(i);
}
FromConstexpr<bool, constexpr bool>(b: constexpr bool): bool {
return BoolConstant(b);
}
FromConstexpr<LanguageMode, constexpr LanguageMode>(m: constexpr LanguageMode):
LanguageMode {
return %RawDownCast<LanguageMode>(%FromConstexpr<Smi>(m));
}
FromConstexpr<ElementsKind, constexpr ElementsKind>(e: constexpr ElementsKind):
ElementsKind {
return Int32Constant(e);
}
FromConstexpr<Object, constexpr string>(s: constexpr string): Object {
return StringConstant(s);
}
FromConstexpr<JSAny, constexpr string>(s: constexpr string): JSAny {
return StringConstant(s);
}
FromConstexpr<NativeContextSlot, constexpr NativeContextSlot>(
c: constexpr NativeContextSlot): NativeContextSlot {
return IntPtrConstant(c);
}
FromConstexpr<ContextSlot, constexpr ContextSlot>(c: constexpr ContextSlot):
ContextSlot {
return IntPtrConstant(c);
}
macro Convert<To: type, From: type>(i: From): To {
return i;
}
macro Convert<To: type, From: type>(i: From): To labels Overflow {
return i;
}
extern macro ConvertElementsKindToInt(ElementsKind): int32;
Convert<int32, ElementsKind>(elementsKind: ElementsKind): int32 {
return ConvertElementsKindToInt(elementsKind);
}
Convert<Number, int32>(i: int32): Number {
return ChangeInt32ToTagged(i);
}
Convert<intptr, int32>(i: int32): intptr {
return ChangeInt32ToIntPtr(i);
}
Convert<intptr, uint32>(i: uint32): intptr {
return Signed(ChangeUint32ToWord(i));
}
Convert<Smi, int32>(i: int32): Smi {
return SmiFromInt32(i);
}
Convert<Number, uint32>(ui: uint32): Number {
return ChangeUint32ToTagged(ui);
}
Convert<Smi, uint32>(ui: uint32): Smi {
return SmiFromInt32(Signed(ui));
}
Convert<uintptr, uint32>(ui: uint32): uintptr {
return ChangeUint32ToWord(ui);
}
Convert<int32, uint8>(i: uint8): int32 {
return Signed(Convert<uint32>(i));
}
Convert<int32, uint16>(i: uint16): int32 {
return Signed(Convert<uint32>(i));
}
Convert<int32, uint31>(i: uint31): int32 {
return Signed(Convert<uint32>(i));
}
Convert<int32, intptr>(i: intptr): int32 {
return TruncateIntPtrToInt32(i);
}
Convert<Smi, intptr>(i: intptr): Smi {
return SmiTag(i);
}
Convert<uint32, uintptr>(ui: uintptr): uint32 {
return Unsigned(TruncateIntPtrToInt32(Signed(ui)));
}
Convert<intptr, Smi>(s: Smi): intptr {
return SmiUntag(s);
}
Convert<uintptr, PositiveSmi>(ps: PositiveSmi): uintptr {
return Unsigned(SmiUntag(ps));
}
Convert<intptr, uintptr>(ui: uintptr): intptr {
const i = Signed(ui);
assert(i >= 0);
return i;
}
Convert<PositiveSmi, intptr>(i: intptr): PositiveSmi {
assert(IsValidPositiveSmi(i));
return %RawDownCast<PositiveSmi>(SmiTag(i));
}
Convert<PositiveSmi, uintptr>(ui: uintptr): PositiveSmi labels IfOverflow {
if (ui > kSmiMaxValue) deferred {
goto IfOverflow;
}
return %RawDownCast<PositiveSmi>(SmiTag(Signed(ui)));
}
Convert<PositiveSmi, intptr>(i: intptr): PositiveSmi labels IfOverflow {
if (IsValidPositiveSmi(i)) {
return %RawDownCast<PositiveSmi>(SmiTag(i));
} else
deferred {
goto IfOverflow;
}
}
Convert<int32, Smi>(s: Smi): int32 {
return SmiToInt32(s);
}
Convert<float64, HeapNumber>(h: HeapNumber): float64 {
return LoadHeapNumberValue(h);
}
Convert<float64, Number>(n: Number): float64 {
return ChangeNumberToFloat64(n);
}
Convert<uintptr, Number>(n: Number): uintptr {
return ChangeNonnegativeNumberToUintPtr(n);
}
Convert<float64, float32>(f: float32): float64 {
return ChangeFloat32ToFloat64(f);
}
Convert<float32, float64>(f: float64): float32 {
return TruncateFloat64ToFloat32(f);
}
Convert<float32, Number>(n: Number): float32 {
return Convert<float32>(ChangeNumberToFloat64(n));
}
Convert<Number, float64>(d: float64): Number {
return AllocateHeapNumberWithValue(d);
}
Convert<float64, uintptr>(ui: uintptr): float64 {
return ChangeUintPtrToFloat64(ui);
}
Convert<Number, uintptr>(ui: uintptr): Number {
return ChangeUintPtrToTagged(ui);
}
Convert<uintptr, float64>(d: float64): uintptr {
return ChangeFloat64ToUintPtr(d);
}
Convert<uintptr, intptr>(i: intptr): uintptr {
return Unsigned(i);
}
Convert<uintptr, RawPtr>(r: RawPtr): uintptr {
return Unsigned(r);
}
Convert<intptr, RawPtr>(r: RawPtr): intptr {
return Signed(r);
}
Convert<bint, int32>(v: int32): bint {
return IntPtrToBInt(Convert<intptr>(v));
}
extern macro IntPtrToBInt(intptr): bint;
Convert<bint, intptr>(v: intptr): bint {
return IntPtrToBInt(v);
}
extern macro SmiToBInt(Smi): bint;
Convert<bint, Smi>(v: Smi): bint {
return SmiToBInt(v);
}
macro Is<A: type, B: type>(implicit context: Context)(o: B): bool {
Cast<A>(o) otherwise return false;
return true;
}
macro UnsafeCast<A: type>(implicit context: Context)(o: Object): A {
assert(Is<A>(o));
return %RawDownCast<A>(o);
}
extern macro FixedArrayMapConstant(): Map;
extern macro FixedCOWArrayMapConstant(): Map;
extern macro EmptyByteArrayConstant(): ByteArray;
extern macro EmptyFixedArrayConstant(): FixedArray;
const kFixedArrayMap: Map = FixedArrayMapConstant();
const kCOWMap: Map = FixedCOWArrayMapConstant();
const kEmptyByteArray: ByteArray = EmptyByteArrayConstant();
const kEmptyFixedArray: FixedArray = EmptyFixedArrayConstant();
extern macro IsPrototypeInitialArrayPrototype(implicit context: Context)(Map):
bool;
extern macro IsNoElementsProtectorCellInvalid(): bool;
extern macro IsArrayIteratorProtectorCellInvalid(): bool;
extern macro IsArraySpeciesProtectorCellInvalid(): bool;
extern macro IsTypedArraySpeciesProtectorCellInvalid(): bool;
extern macro IsPromiseSpeciesProtectorCellInvalid(): bool;
extern macro IsMockArrayBufferAllocatorFlag(): bool;
extern macro IsPrototypeTypedArrayPrototype(implicit context: Context)(Map):
bool;
extern operator '.data_ptr' macro LoadJSTypedArrayBackingStore(JSTypedArray):
RawPtr;
extern operator '.elements_kind' macro LoadMapElementsKind(Map): ElementsKind;
extern operator '.elements_kind' macro LoadElementsKind(JSTypedArray):
ElementsKind;
extern operator '.length' macro LoadFastJSArrayLength(FastJSArray): Smi;
operator '.length=' macro StoreFastJSArrayLength(
array: FastJSArray, length: Smi) {
const array: JSArray = array;
array.length = length;
}
extern operator '.objects[]' macro LoadFixedArrayElement(
FixedArray, intptr): Object;
extern operator '.objects[]' macro LoadFixedArrayElement(
FixedArray, Smi): Object;
extern operator '.objects[]' macro LoadFixedArrayElement(
FixedArray, constexpr int31): Object;
extern operator '.objects[]=' macro StoreFixedArrayElement(
FixedArray, intptr, Smi): void;
extern operator '.objects[]=' macro StoreFixedArrayElement(
FixedArray, Smi, Smi): void;
extern operator '.objects[]=' macro StoreFixedArrayElement(
FixedArray, intptr, HeapObject): void;
extern operator '.objects[]=' macro StoreFixedArrayElement(
FixedArray, intptr, Object): void;
extern operator '.objects[]=' macro StoreFixedArrayElement(
FixedArray, constexpr int31, Smi): void;
extern operator '.objects[]=' macro StoreFixedArrayElement(
FixedArray, constexpr int31, HeapObject): void;
extern operator '.objects[]=' macro StoreFixedArrayElement(
FixedArray, Smi, Object): void;
extern macro StoreFixedArrayElement(
FixedArray, Smi, Object, constexpr WriteBarrierMode): void;
extern macro StoreFixedArrayElement(
FixedArray, Smi, Smi, constexpr WriteBarrierMode): void;
extern macro StoreFixedArrayElement(
FixedArray, constexpr int31, Object, constexpr WriteBarrierMode): void;
extern macro StoreFixedArrayElement(
FixedArray, constexpr int31, Smi, constexpr WriteBarrierMode): void;
extern macro StoreFixedArrayElement(
FixedArray, intptr, Object, constexpr WriteBarrierMode): void;
extern macro StoreFixedArrayElement(
FixedArray, intptr, Smi, constexpr WriteBarrierMode): void;
extern operator '.floats[]=' macro StoreFixedDoubleArrayElement(
FixedDoubleArray, intptr, float64): void;
extern operator '.floats[]=' macro StoreFixedDoubleArrayElementSmi(
FixedDoubleArray, Smi, float64): void;
extern operator '.floats[]' macro LoadFixedDoubleArrayElement(
FixedDoubleArray, intptr): float64;
operator '[]=' macro StoreFixedDoubleArrayDirect(
a: FixedDoubleArray, i: Smi, v: Number) {
a.floats[i] = Convert<float64>(v);
}
operator '[]=' macro StoreFixedArrayDirect(a: FixedArray, i: Smi, v: Object) {
a.objects[i] = v;
}
extern macro GetNumberDictionaryNumberOfElements(NumberDictionary): Smi;
extern macro GetIteratorMethod(implicit context: Context)(HeapObject): JSAny
labels IfIteratorUndefined;
extern macro LoadConstructorOrBackPointer(Map): Object;
extern macro BasicLoadNumberDictionaryElement(NumberDictionary, intptr): JSAny
labels NotData, IfHole;
extern macro BasicStoreNumberDictionaryElement(NumberDictionary, intptr, JSAny)
labels NotData, IfHole, ReadOnly;
extern macro IsFastElementsKind(ElementsKind): bool;
extern macro IsDoubleElementsKind(ElementsKind): bool;
extern macro IsFastSmiOrTaggedElementsKind(ElementsKind): bool;
extern macro IsFastSmiElementsKind(ElementsKind): bool;
extern macro IsHoleyFastElementsKind(ElementsKind): bool;
macro FastHoleyElementsKind(kind: ElementsKind): ElementsKind {
if (kind == PACKED_SMI_ELEMENTS) {
return HOLEY_SMI_ELEMENTS;
} else if (kind == PACKED_DOUBLE_ELEMENTS) {
return HOLEY_DOUBLE_ELEMENTS;
}
assert(kind == PACKED_ELEMENTS);
return HOLEY_ELEMENTS;
}
macro AllowDoubleElements(kind: ElementsKind): ElementsKind {
if (kind == PACKED_SMI_ELEMENTS) {
return PACKED_DOUBLE_ELEMENTS;
} else if (kind == HOLEY_SMI_ELEMENTS) {
return HOLEY_DOUBLE_ELEMENTS;
}
return kind;
}
macro AllowNonNumberElements(kind: ElementsKind): ElementsKind {
if (kind == PACKED_SMI_ELEMENTS) {
return PACKED_ELEMENTS;
} else if (kind == HOLEY_SMI_ELEMENTS) {
return HOLEY_ELEMENTS;
} else if (kind == PACKED_DOUBLE_ELEMENTS) {
return PACKED_ELEMENTS;
} else if (kind == HOLEY_DOUBLE_ELEMENTS) {
return HOLEY_ELEMENTS;
}
return kind;
}
extern macro AllocateZeroedFixedArray(intptr): FixedArray;
extern macro AllocateZeroedFixedDoubleArray(intptr): FixedDoubleArray;
extern macro CalculateNewElementsCapacity(Smi): Smi;
extern macro CalculateNewElementsCapacity(intptr): intptr;
extern macro AllocateFixedArrayWithHoles(
intptr, constexpr AllocationFlags): FixedArray;
extern macro AllocateFixedDoubleArrayWithHoles(
intptr, constexpr AllocationFlags): FixedDoubleArray;
extern macro CopyFixedArrayElements(
constexpr ElementsKind, FixedArray, constexpr ElementsKind, FixedArray,
intptr, intptr, intptr): void;
extern macro CopyFixedArrayElements(
constexpr ElementsKind, FixedArray, constexpr ElementsKind, FixedArray, Smi,
Smi, Smi): void;
extern macro AllocateJSArray(
constexpr ElementsKind, Map, intptr, Smi,
constexpr AllocationFlags): JSArray;
extern macro AllocateJSArray(constexpr ElementsKind, Map, intptr, Smi): JSArray;
extern macro AllocateJSArray(constexpr ElementsKind, Map, Smi, Smi): JSArray;
extern macro AllocateJSArray(Map, FixedArrayBase, Smi): JSArray;
extern macro AllocateJSObjectFromMap(Map): JSObject;
extern macro AllocateJSObjectFromMap(
Map, FixedArray | PropertyArray, FixedArray, constexpr AllocationFlags,
constexpr SlackTrackingMode): JSObject;
extern macro LoadDoubleWithHoleCheck(FixedDoubleArray, Smi): float64
labels IfHole;
extern macro LoadDoubleWithHoleCheck(FixedDoubleArray, intptr): float64
labels IfHole;
extern macro StoreFixedDoubleArrayHoleSmi(FixedDoubleArray, Smi): void;
macro GetObjectFunction(implicit context: Context)(): JSFunction {
return UnsafeCast<JSFunction>(
LoadNativeContext(context)[OBJECT_FUNCTION_INDEX]);
}
macro GetArrayBufferFunction(implicit context: Context)(): Constructor {
return UnsafeCast<Constructor>(
LoadNativeContext(context)[ARRAY_BUFFER_FUN_INDEX]);
}
macro GetArrayBufferNoInitFunction(implicit context: Context)(): JSFunction {
return UnsafeCast<JSFunction>(
LoadNativeContext(context)[ARRAY_BUFFER_NOINIT_FUN_INDEX]);
}
macro GetFastPackedElementsJSArrayMap(implicit context: Context)(): Map {
return UnsafeCast<Map>(
LoadNativeContext(context)[JS_ARRAY_PACKED_ELEMENTS_MAP_INDEX]);
}
macro GetFastPackedSmiElementsJSArrayMap(implicit context: Context)(): Map {
return UnsafeCast<Map>(
LoadNativeContext(context)[JS_ARRAY_PACKED_SMI_ELEMENTS_MAP_INDEX]);
}
macro GetProxyRevocableResultMap(implicit context: Context)(): Map {
return UnsafeCast<Map>(
LoadNativeContext(context)[PROXY_REVOCABLE_RESULT_MAP_INDEX]);
}
macro GetIteratorResultMap(implicit context: Context)(): Map {
return UnsafeCast<Map>(LoadNativeContext(context)[ITERATOR_RESULT_MAP_INDEX]);
}
macro GetInitialStringIteratorMap(implicit context: Context)(): Map {
return UnsafeCast<Map>(
LoadNativeContext(context)[INITIAL_STRING_ITERATOR_MAP_INDEX]);
}
macro GetReflectApply(implicit context: Context)(): Callable {
return UnsafeCast<Callable>(LoadNativeContext(context)[REFLECT_APPLY_INDEX]);
}
macro GetRegExpLastMatchInfo(implicit context: Context)(): RegExpMatchInfo {
return %RawDownCast<RegExpMatchInfo>(
LoadNativeContext(context)[REGEXP_LAST_MATCH_INFO_INDEX]);
}
extern transitioning macro Call(Context, Callable, JSAny): JSAny;
extern transitioning macro Call(Context, Callable, JSAny, JSAny): JSAny;
extern transitioning macro Call(Context, Callable, JSAny, JSAny, JSAny): JSAny;
extern transitioning macro Call(
Context, Callable, JSAny, JSAny, JSAny, JSAny): JSAny;
extern transitioning macro Call(
Context, Callable, JSAny, JSAny, JSAny, JSAny, JSAny): JSAny;
extern transitioning macro Call(
Context, Callable, JSAny, JSAny, JSAny, JSAny, JSAny, JSAny): JSAny;
extern builtin CloneFastJSArray(Context, FastJSArrayForCopy): JSArray;
extern macro ExtractFixedArray(FixedArrayBase, Smi, Smi, Smi): FixedArrayBase;
extern macro ExtractFixedArray(
FixedArrayBase, Smi, Smi, Smi,
constexpr ExtractFixedArrayFlags): FixedArrayBase;
extern macro ExtractFixedArray(
FixedArray, intptr, intptr, intptr,
constexpr ExtractFixedArrayFlags): FixedArray;
extern builtin ExtractFastJSArray(Context, JSArray, Smi, Smi): JSArray;
extern macro MoveElements(
constexpr ElementsKind, FixedArrayBase, intptr, intptr, intptr): void;
macro TorqueMoveElementsSmi(
elements: FixedArray, dstIndex: intptr, srcIndex: intptr,
count: intptr): void {
MoveElements(HOLEY_SMI_ELEMENTS, elements, dstIndex, srcIndex, count);
}
macro TorqueMoveElements(
elements: FixedArray, dstIndex: intptr, srcIndex: intptr,
count: intptr): void {
MoveElements(HOLEY_ELEMENTS, elements, dstIndex, srcIndex, count);
}
macro TorqueMoveElements(
elements: FixedDoubleArray, dstIndex: intptr, srcIndex: intptr,
count: intptr): void {
MoveElements(HOLEY_DOUBLE_ELEMENTS, elements, dstIndex, srcIndex, count);
}
extern macro CopyElements(
constexpr ElementsKind, FixedArrayBase, intptr, FixedArrayBase, intptr,
intptr): void;
macro TorqueCopyElements(
dstElements: FixedArray, dstIndex: intptr, srcElements: FixedArray,
srcIndex: intptr, count: intptr): void {
CopyElements(
HOLEY_ELEMENTS, dstElements, dstIndex, srcElements, srcIndex, count);
}
macro TorqueCopyElements(
dstElements: FixedDoubleArray, dstIndex: intptr,
srcElements: FixedDoubleArray, srcIndex: intptr, count: intptr): void {
CopyElements(
HOLEY_DOUBLE_ELEMENTS, dstElements, dstIndex, srcElements, srcIndex,
count);
}
macro LoadElementNoHole<T: type>(a: JSArray, index: Smi): JSAny
labels IfHole;
LoadElementNoHole<FixedArray>(implicit context: Context)(
a: JSArray, index: Smi): JSAny
labels IfHole {
try {
const elements: FixedArray =
Cast<FixedArray>(a.elements) otherwise Unexpected;
const e = UnsafeCast<(JSAny | TheHole)>(elements.objects[index]);
typeswitch (e) {
case (TheHole): {
goto IfHole;
}
case (e: JSAny): {
return e;
}
}
}
label Unexpected {
unreachable;
}
}
LoadElementNoHole<FixedDoubleArray>(implicit context: Context)(
a: JSArray, index: Smi): JSAny
labels IfHole {
try {
const elements: FixedDoubleArray =
Cast<FixedDoubleArray>(a.elements) otherwise Unexpected;
const e: float64 =
LoadDoubleWithHoleCheck(elements, index) otherwise IfHole;
return AllocateHeapNumberWithValue(e);
}
label Unexpected {
unreachable;
}
}
struct FastJSArrayWitness {
Get(): FastJSArray {
return this.unstable;
}
Recheck() labels CastError {
if (this.stable.map != this.map) goto CastError;
// We don't need to check elements kind or whether the prototype
// has changed away from the default JSArray prototype, because
// if the map remains the same then those properties hold.
//
// However, we have to make sure there are no elements in the
// prototype chain.
if (IsNoElementsProtectorCellInvalid()) goto CastError;
this.unstable = %RawDownCast<FastJSArray>(this.stable);
}
LoadElementNoHole(implicit context: Context)(k: Smi): JSAny
labels FoundHole {
if (this.hasDoubles) {
return LoadElementNoHole<FixedDoubleArray>(this.unstable, k)
otherwise FoundHole;
} else {
return LoadElementNoHole<FixedArray>(this.unstable, k)
otherwise FoundHole;
}
}
StoreHole(k: Smi) {
if (this.hasDoubles) {
const elements = Cast<FixedDoubleArray>(this.unstable.elements)
otherwise unreachable;
StoreFixedDoubleArrayHoleSmi(elements, k);
} else {
const elements = Cast<FixedArray>(this.unstable.elements)
otherwise unreachable;
StoreFixedArrayElement(elements, k, TheHole);
}
}
LoadElementOrUndefined(implicit context: Context)(k: Smi): JSAny {
try {
return this.LoadElementNoHole(k) otherwise FoundHole;
}
label FoundHole {
return Undefined;
}
}
EnsureArrayPushable(implicit context: Context)() labels Failed {
EnsureArrayPushable(this.map) otherwise Failed;
array::EnsureWriteableFastElements(this.unstable);
this.arrayIsPushable = true;
}
ChangeLength(newLength: Smi) {
assert(this.arrayIsPushable);
this.unstable.length = newLength;
}
Push(value: JSAny) labels Failed {
assert(this.arrayIsPushable);
if (this.hasDoubles) {
BuildAppendJSArray(HOLEY_DOUBLE_ELEMENTS, this.unstable, value)
otherwise Failed;
} else if (this.hasSmis) {
BuildAppendJSArray(HOLEY_SMI_ELEMENTS, this.unstable, value)
otherwise Failed;
} else {
assert(
this.map.elements_kind == HOLEY_ELEMENTS ||
this.map.elements_kind == PACKED_ELEMENTS);
BuildAppendJSArray(HOLEY_ELEMENTS, this.unstable, value)
otherwise Failed;
}
}
MoveElements(dst: intptr, src: intptr, length: intptr) {
assert(this.arrayIsPushable);
if (this.hasDoubles) {
const elements: FixedDoubleArray =
Cast<FixedDoubleArray>(this.unstable.elements)
otherwise unreachable;
TorqueMoveElements(elements, dst, src, length);
} else {
const elements: FixedArray = Cast<FixedArray>(this.unstable.elements)
otherwise unreachable;
if (this.hasSmis) {
TorqueMoveElementsSmi(elements, dst, src, length);
} else {
TorqueMoveElements(elements, dst, src, length);
}
}
}
const stable: JSArray;
unstable: FastJSArray;
const map: Map;
const hasDoubles: bool;
const hasSmis: bool;
arrayIsPushable: bool;
}
macro NewFastJSArrayWitness(array: FastJSArray): FastJSArrayWitness {
const kind = array.map.elements_kind;
return FastJSArrayWitness{
stable: array,
unstable: array,
map: array.map,
hasDoubles: IsDoubleElementsKind(kind),
hasSmis: IsElementsKindLessThanOrEqual(kind, HOLEY_SMI_ELEMENTS),
arrayIsPushable: false
};
}
struct FastJSArrayForReadWitness {
Get(): FastJSArrayForRead {
return this.unstable;
}
Recheck() labels CastError {
if (this.stable.map != this.map) goto CastError;
// We don't need to check elements kind or whether the prototype
// has changed away from the default JSArray prototype, because
// if the map remains the same then those properties hold.
//
// However, we have to make sure there are no elements in the
// prototype chain.
if (IsNoElementsProtectorCellInvalid()) goto CastError;
this.unstable = %RawDownCast<FastJSArrayForRead>(this.stable);
}
LoadElementNoHole(implicit context: Context)(k: Smi): JSAny
labels FoundHole {
if (this.hasDoubles) {
return LoadElementNoHole<FixedDoubleArray>(this.unstable, k)
otherwise FoundHole;
} else {
return LoadElementNoHole<FixedArray>(this.unstable, k)
otherwise FoundHole;
}
}
const stable: JSArray;
unstable: FastJSArrayForRead;
const map: Map;
const hasDoubles: bool;
}
macro NewFastJSArrayForReadWitness(array: FastJSArrayForRead):
FastJSArrayForReadWitness {
const kind = array.map.elements_kind;
return FastJSArrayForReadWitness{
stable: array,
unstable: array,
map: array.map,
hasDoubles: IsDoubleElementsKind(kind)
};
}
extern macro TransitionElementsKind(
JSObject, Map, constexpr ElementsKind,
constexpr ElementsKind): void labels Bailout;
extern macro PerformStackCheck(implicit context: Context)(): void;
extern macro IsCallable(HeapObject): bool;
extern macro IsConstructor(HeapObject): bool;
extern macro IsJSArray(HeapObject): bool;
extern macro IsJSProxy(HeapObject): bool;
extern macro IsJSRegExp(HeapObject): bool;
extern macro IsMap(HeapObject): bool;
extern macro IsJSFunction(HeapObject): bool;
extern macro IsJSObject(HeapObject): bool;
extern macro IsJSTypedArray(HeapObject): bool;
extern macro IsNumberDictionary(HeapObject): bool;
extern macro IsContext(HeapObject): bool;
extern macro IsNativeContext(HeapObject): bool;
extern macro IsJSReceiver(HeapObject): bool;
extern macro TaggedIsCallable(Object): bool;
extern macro IsDetachedBuffer(JSArrayBuffer): bool;
extern macro IsHeapNumber(HeapObject): bool;
extern macro IsBigInt(HeapObject): bool;
extern macro IsFixedArray(HeapObject): bool;
extern macro IsName(HeapObject): bool;
extern macro IsPrivateSymbol(HeapObject): bool;
extern macro IsNumber(Object): bool;
extern macro IsNumberNormalized(Number): bool;
extern macro IsOddball(HeapObject): bool;
extern macro IsSymbol(HeapObject): bool;
extern macro IsJSArrayMap(Map): bool;
extern macro IsExtensibleMap(Map): bool;
extern macro IsJSPrimitiveWrapper(HeapObject): bool;
extern macro IsCustomElementsReceiverInstanceType(int32): bool;
extern macro Typeof(JSAny): String;
// Return true iff number is NaN.
macro NumberIsNaN(number: Number): bool {
typeswitch (number) {
case (Smi): {
return false;
}
case (hn: HeapNumber): {
const value: float64 = Convert<float64>(hn);
return value != value;
}
}
}
extern macro GotoIfForceSlowPath() labels Taken;
macro IsForceSlowPath(): bool {
GotoIfForceSlowPath() otherwise return true;
return false;
}
extern macro BranchIfToBooleanIsTrue(JSAny): never
labels Taken, NotTaken;
extern macro BranchIfToBooleanIsFalse(JSAny): never
labels Taken, NotTaken;
macro ToBoolean(obj: JSAny): bool {
BranchIfToBooleanIsTrue(obj) otherwise return true, return false;
}
@export
macro RequireObjectCoercible(implicit context: Context)(
value: JSAny, name: constexpr string): JSAny {
if (IsNullOrUndefined(value)) {
ThrowTypeError(kCalledOnNullOrUndefined, name);
}
return value;
}
extern macro BranchIfSameValue(JSAny, JSAny): never labels Taken, NotTaken;
macro SameValue(a: JSAny, b: JSAny): bool {
BranchIfSameValue(a, b) otherwise return true, return false;
}
transitioning macro ToIndex(input: JSAny, context: Context): Number
labels RangeError {
if (input == Undefined) {
return 0;
}
const value: Number = ToInteger_Inline(context, input, kTruncateMinusZero);
if (value < 0 || value > kMaxSafeInteger) {
goto RangeError;
}
return value;
}
transitioning macro GetLengthProperty(implicit context: Context)(o: JSAny):
Number {
try {
typeswitch (o) {
case (a: JSArray): {
return a.length;
}
case (a: JSArgumentsObjectWithLength): {
goto ToLength(a.length);
}
case (JSAny): deferred {
goto ToLength(GetProperty(o, kLengthString));
}
}
}
label ToLength(length: JSAny) deferred {
return ToLength_Inline(context, length);
}
}
transitioning macro GetMethod(implicit context: Context)(
o: JSAny, name: constexpr string): Callable labels IfNullOrUndefined {
const value = GetProperty(o, name);
if (value == Undefined || value == Null) goto IfNullOrUndefined;
return Cast<Callable>(value)
otherwise ThrowTypeError(kPropertyNotFunction, value, name, o);
}
extern macro NumberToString(Number): String;
extern macro IsOneByteStringInstanceType(InstanceType): bool;
extern macro AllocateSeqOneByteString(uint32): String;
extern macro AllocateSeqTwoByteString(uint32): String;
extern macro ConvertToRelativeIndex(implicit context: Context)(
JSAny, intptr): intptr;
extern builtin ObjectToString(Context, JSAny): JSAny;
extern builtin StringRepeat(Context, String, Number): String;
struct KeyValuePair {
key: JSAny;
value: JSAny;
}
// Macro definitions for compatibility that expose functionality to the CSA
// using "legacy" APIs. In Torque code, these should not be used.
@export
macro IsFastJSArray(o: Object, context: Context): bool {
// Long-term, it's likely not a good idea to have this slow-path test here,
// since it fundamentally breaks the type system.
if (IsForceSlowPath()) return false;
return Is<FastJSArray>(o);
}
@export
macro BranchIfFastJSArray(o: Object, context: Context): never labels True,
False {
if (IsFastJSArray(o, context)) {
goto True;
} else {
goto False;
}
}
@export
macro BranchIfFastJSArrayForRead(o: Object, context: Context):
never labels True, False {
// Long-term, it's likely not a good idea to have this slow-path test here,
// since it fundamentally breaks the type system.
if (IsForceSlowPath()) goto False;
if (Is<FastJSArrayForRead>(o)) {
goto True;
} else {
goto False;
}
}
@export
macro IsFastJSArrayWithNoCustomIteration(context: Context, o: Object): bool {
return Is<FastJSArrayWithNoCustomIteration>(o);
}
@export
macro IsFastJSArrayForReadWithNoCustomIteration(context: Context, o: Object):
bool {
return Is<FastJSArrayForReadWithNoCustomIteration>(o);
}
extern transitioning runtime
CreateDataProperty(implicit context: Context)(JSReceiver, JSAny, JSAny);
namespace runtime {
extern runtime
GetDerivedMap(Context, JSFunction, JSReceiver): Map;
}
transitioning builtin FastCreateDataProperty(implicit context: Context)(
receiver: JSReceiver, key: JSAny, value: JSAny): Object {
try {
const array = Cast<FastJSArray>(receiver) otherwise Slow;
const index: Smi = Cast<Smi>(key) otherwise goto Slow;
if (index < 0 || index > array.length) goto Slow;
array::EnsureWriteableFastElements(array);
const isAppend = index == array.length;
const kind = array.map.elements_kind;
// We may have to transition a.
// For now, if transition is required, jump away to slow.
if (IsFastSmiElementsKind(kind)) {
const smiValue = Cast<Smi>(value) otherwise Slow;
if (isAppend) {
BuildAppendJSArray(HOLEY_SMI_ELEMENTS, array, value) otherwise Slow;
} else {
const elements = Cast<FixedArray>(array.elements) otherwise unreachable;
elements[index] = smiValue;
}
} else if (IsDoubleElementsKind(kind)) {
const numberValue = Cast<Number>(value) otherwise Slow;
if (isAppend) {
BuildAppendJSArray(HOLEY_DOUBLE_ELEMENTS, array, value)
otherwise Slow;
} else {
const doubleElements = Cast<FixedDoubleArray>(array.elements)
otherwise unreachable;
doubleElements[index] = numberValue;
}
} else {
assert(IsFastSmiOrTaggedElementsKind(kind));
if (isAppend) {
BuildAppendJSArray(HOLEY_ELEMENTS, array, value) otherwise Slow;
} else {
const elements = Cast<FixedArray>(array.elements) otherwise unreachable;
elements[index] = value;
}
}
}
label Slow {
CreateDataProperty(receiver, key, value);
}
return Undefined;
}
@export
transitioning macro ToStringImpl(context: Context, o: JSAny): String {
let result: JSAny = o;
while (true) {
typeswitch (result) {
case (num: Number): {
return NumberToString(num);
}
case (str: String): {
return str;
}
case (oddball: Oddball): {
return oddball.to_string;
}
case (JSReceiver): {
result = NonPrimitiveToPrimitive_String(context, result);
continue;
}
case (Symbol): {
ThrowTypeError(kSymbolToString);
}
case (JSAny): {
return ToStringRT(context, o);
}
}
}
unreachable;
}
macro VerifiedUnreachable(): never {
StaticAssert(false);
unreachable;
}
macro Float64IsSomeInfinity(value: float64): bool {
if (value == V8_INFINITY) {
return true;
}
return value == (Convert<float64>(0) - V8_INFINITY);
}
@export
macro IsIntegerOrSomeInfinity(o: Object): bool {
typeswitch (o) {
case (Smi): {
return true;
}
case (hn: HeapNumber): {
if (Float64IsSomeInfinity(Convert<float64>(hn))) {
return true;
}
return IsInteger(hn);
}
case (Object): {
return false;
}
}
}
builtin CheckNumberInRange(implicit context: Context)(
value: Number, min: Number, max: Number): Undefined {
if (IsIntegerOrSomeInfinity(value) && min <= value && value <= max) {
return Undefined;
} else {
Print('Range type assertion failed! (value/min/max)');
Print(value);
Print(min);
Print(max);
unreachable;
}
}
macro ReplaceTheHoleWithUndefined(o: JSAny | TheHole): JSAny {
typeswitch (o) {
case (TheHole): {
return Undefined;
}
case (a: JSAny): {
return a;
}
}
}