diff options
Diffstat (limited to 'deps/v8/src/builtins/base.tq')
| -rw-r--r-- | deps/v8/src/builtins/base.tq | 755 |
1 files changed, 578 insertions, 177 deletions
diff --git a/deps/v8/src/builtins/base.tq b/deps/v8/src/builtins/base.tq index 07af1f441f..aa5d4cc50a 100644 --- a/deps/v8/src/builtins/base.tq +++ b/deps/v8/src/builtins/base.tq @@ -43,6 +43,29 @@ extern class HeapObject extends Tagged { 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 @@ -56,6 +79,8 @@ type uint16 extends uint31 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'; @@ -77,7 +102,7 @@ extern class Context extends HeapObject { extension: Object; native_context: Object; } -type NativeContext extends Context; +type NativeContext extends Context generates 'TNode<NativeContext>'; @generateCppClass extern class Oddball extends HeapObject { @@ -97,6 +122,9 @@ type Numeric = Number | BigInt; 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 { @@ -104,6 +132,9 @@ extern class Symbol extends Name { 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 { @@ -136,9 +167,11 @@ extern class SeqString extends String { } @generateCppClass extern class SeqOneByteString extends SeqString { + chars[length]: char8; } @generateCppClass extern class SeqTwoByteString extends SeqString { + chars[length]: char16; } @generateCppClass @@ -185,7 +218,6 @@ type DirectString extends String; type RootIndex generates 'TNode<Int32T>' constexpr 'RootIndex'; @abstract -@generateCppClass extern class FixedArrayBase extends HeapObject { length: Smi; } @@ -205,7 +237,7 @@ type LayoutDescriptor extends ByteArray type TransitionArray extends WeakFixedArray generates 'TNode<TransitionArray>'; -type InstanceType extends uint16 constexpr 'InstanceType'; +type InstanceType extends uint16 constexpr 'v8::internal::InstanceType'; extern class Map extends HeapObject { instance_size_in_words: uint8; @@ -388,8 +420,8 @@ extern class JSProxy extends JSReceiver { // Just a starting shape for JSObject; properties can move after initialization. @noVerifier extern class JSProxyRevocableResult extends JSObject { - proxy: Object; - revoke: Object; + proxy: JSAny; + revoke: JSAny; } macro NewJSProxyRevocableResult(implicit context: Context)( @@ -412,22 +444,24 @@ extern class JSGlobalProxy extends JSObject { @generateCppClass extern class JSPrimitiveWrapper extends JSObject { - value: Object; + value: JSAny; } -extern class JSArgumentsObject extends JSObject {} +@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: Object; + length: JSAny; } // Just a starting shape for JSObject; properties can move after initialization. @hasSameInstanceTypeAsParent extern class JSSloppyArgumentsObject extends JSArgumentsObjectWithLength { - callee: Object; + callee: JSAny; } // Just a starting shape for JSObject; properties can move after initialization. @@ -492,8 +526,8 @@ type NoSharedNameSentinel extends Smi; @generateCppClass extern class CallHandlerInfo extends Struct { - callback: Foreign | Undefined; - js_callback: Foreign | Undefined; + callback: NonNullForeign | Undefined | Zero; + js_callback: NonNullForeign | Undefined | Zero; data: Object; } @@ -510,18 +544,37 @@ extern class Module extends HeapObject { 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; @@ -529,6 +582,7 @@ extern class SyntheticModule extends Module { } @abstract +@generateCppClass extern class JSModuleNamespace extends JSObject { module: Module; } @@ -539,14 +593,23 @@ extern class TemplateList extends FixedArray { } @abstract +@generateCppClass extern class JSWeakCollection extends JSObject { + // The backing hash table mapping keys to values. table: Object; } -extern class JSWeakSet extends JSWeakCollection {} -extern class JSWeakMap extends JSWeakCollection {} +@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; } @@ -601,7 +664,10 @@ extern class Script extends Struct { host_defined_options: Object; } -extern class EmbedderDataArray extends HeapObject { length: Smi; } +@generateCppClass +extern class EmbedderDataArray extends HeapObject { + length: Smi; +} type ScopeInfo extends HeapObject generates 'TNode<ScopeInfo>'; @@ -631,9 +697,15 @@ extern class SharedFunctionInfo extends HeapObject { @if(V8_SFI_HAS_UNIQUE_ID) unique_id: int32; } +@generateCppClass extern class JSBoundFunction extends JSObject { + // The wrapped function object. bound_target_function: Callable; - bound_this: Object; + // 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; } @@ -644,7 +716,7 @@ extern class JSBoundFunction extends JSObject { type NonNullForeign extends Foreign; // A function built with InstantiateFunction for the public API. -type CallableApiObject extends HeapObject; +type CallableApiObject extends JSObject; // A JSProxy with the callable bit set. type CallableJSProxy extends JSProxy; @@ -729,14 +801,26 @@ extern class JSTypedArray extends JSArrayBufferView { } @abstract +@generateCppClass extern class JSCollection extends JSObject { + // The backing hash table. table: Object; } -extern class JSSet extends JSCollection {} -extern class JSMap extends JSCollection {} +@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; @@ -744,6 +828,9 @@ extern class JSDate extends JSObject { 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; } @@ -752,8 +839,11 @@ extern class JSGlobalObject extends JSObject { 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; } @@ -763,6 +853,7 @@ extern class JSStringIterator extends JSObject { } @abstract +@generateCppClass extern class TemplateInfo extends Struct { tag: Object; serial_number: Object; @@ -772,12 +863,15 @@ extern class TemplateInfo extends Struct { } @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; @@ -788,17 +882,31 @@ extern class FunctionTemplateRareData extends Struct { 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; - function_template_rare_data: 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; @@ -809,7 +917,7 @@ extern class PropertyArray extends HeapObject { length_and_hash: Smi; } type DependentCode extends WeakFixedArray; extern class PropertyCell extends HeapObject { - name: Name; + name: AnyName; property_details_raw: Smi; value: Object; dependent_code: DependentCode; @@ -840,6 +948,7 @@ const UTF32: extern class Foreign extends HeapObject { foreign_address: RawPtr; } +@generateCppClass extern class InterceptorInfo extends Struct { getter: NonNullForeign | Zero | Undefined; setter: NonNullForeign | Zero | Undefined; @@ -852,6 +961,7 @@ extern class InterceptorInfo extends Struct { flags: Smi; } +@generateCppClass extern class AccessCheckInfo extends Struct { callback: Foreign | Zero | Undefined; named_interceptor: InterceptorInfo | Zero | Undefined; @@ -859,14 +969,21 @@ extern class AccessCheckInfo extends Struct { data: Object; } +@generateCppClass extern class ArrayBoilerplateDescription extends Struct { flags: Smi; constant_elements: FixedArrayBase; } -extern class AliasedArgumentsEntry extends Struct { aliased_context_slot: Smi; } +@generateCppClass +extern class AliasedArgumentsEntry extends Struct { + aliased_context_slot: Smi; +} -extern class Cell extends HeapObject { value: Object; } +@generateCppClass +extern class Cell extends HeapObject { + value: Object; +} extern class DataHandler extends Struct { smi_handler: Smi | Code; @@ -881,39 +998,58 @@ extern class DataHandler extends Struct { @abstract @dirtyInstantiatedAbstractClass +@generateCppClass extern class JSGeneratorObject extends JSObject { function: JSFunction; context: Context; - receiver: Object; + 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; @@ -931,11 +1067,13 @@ extern class StackFrameInfo extends Struct { 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; @@ -943,6 +1081,7 @@ extern class StackTraceFrame extends Struct { id: Smi; } +@generateCppClass extern class ClassPositions extends Struct { start: Smi; end: Smi; @@ -958,7 +1097,7 @@ extern class WasmExportedFunctionData extends Struct { // 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; // Pseudo-smi: one-bit shift on all platforms. + wasm_call_target: Smi | Foreign; packed_args_size: Smi; } @@ -972,7 +1111,7 @@ extern class WasmJSFunctionData extends Struct { extern class WasmCapiFunctionData extends Struct { call_target: RawPtr; - embedder_data: RawPtr; + embedder_data: Foreign; // Managed<wasm::FuncData> wrapper_code: Code; serialized_signature: ByteArray; // PodArray<wasm::ValueType> } @@ -995,7 +1134,13 @@ extern class WasmDebugInfo extends Struct { c_wasm_entry_map: Foreign | Undefined; // Managed<wasm::SignatureMap> } -extern class WasmExceptionTag extends Struct { index: Smi; } +@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'; @@ -1013,8 +1158,8 @@ const PACKED_DOUBLE_ELEMENTS: constexpr ElementsKind generates 'PACKED_DOUBLE_ELEMENTS'; const HOLEY_DOUBLE_ELEMENTS: constexpr ElementsKind generates 'HOLEY_DOUBLE_ELEMENTS'; -const LAST_FROZEN_ELEMENTS_KIND: - constexpr ElementsKind generates 'LAST_FROZEN_ELEMENTS_KIND'; +const LAST_ANY_NONEXTENSIBLE_ELEMENTS_KIND: constexpr ElementsKind + generates 'LAST_ANY_NONEXTENSIBLE_ELEMENTS_KIND'; const DICTIONARY_ELEMENTS: constexpr ElementsKind generates 'DICTIONARY_ELEMENTS'; @@ -1186,6 +1331,7 @@ 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(); @@ -1207,6 +1353,7 @@ const 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; @@ -1214,6 +1361,7 @@ extern class AsyncGeneratorRequest extends Struct { promise: JSPromise; } +@generateCppClass extern class SourceTextModuleInfoEntry extends Struct { export_name: String | Undefined; local_name: String | Undefined; @@ -1224,31 +1372,43 @@ extern class SourceTextModuleInfoEntry extends Struct { 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; } -extern class PromiseFulfillReactionJobTask extends PromiseReactionJobTask {} +@generateCppClass +extern class PromiseFulfillReactionJobTask extends PromiseReactionJobTask { +} -extern class PromiseRejectReactionJobTask extends PromiseReactionJobTask {} +@generateCppClass +extern class PromiseRejectReactionJobTask extends PromiseReactionJobTask { +} +@generateCppClass extern class PromiseResolveThenableJobTask extends Microtask { context: Context; promise_to_resolve: JSPromise; @@ -1256,6 +1416,7 @@ extern class PromiseResolveThenableJobTask extends Microtask { thenable: JSReceiver; } +@generateCppClass extern class JSRegExp extends JSObject { data: FixedArray | Undefined; source: String | Undefined; @@ -1263,7 +1424,7 @@ extern class JSRegExp extends JSObject { } extern transitioning macro AllocateJSIteratorResult(implicit context: Context)( - Object, Boolean): JSObject; + JSAny, Boolean): JSObject; // Note: Although a condition for a FastJSRegExp is having a positive smi // lastIndex (see RegExpBuiltinsAssembler::BranchIfFastRegExp), it is possible @@ -1282,13 +1443,16 @@ RegExpBuiltinsAssembler::FastStoreLastIndex(FastJSRegExp, Smi): void; @hasSameInstanceTypeAsParent extern class JSRegExpResult extends JSArray { - index: Object; - input: Object; - groups: Object; + index: JSAny; + input: JSAny; + groups: JSAny; } +@generateCppClass extern class JSRegExpStringIterator extends JSObject { - iterating_reg_exp: Object; + // The [[IteratingRegExp]] internal property. + iterating_reg_exp: JSAny; + // The [[IteratedString]] internal property. iterated_string: String; flags: Smi; } @@ -1466,32 +1630,33 @@ extern macro Comment(constexpr string); extern macro StaticAssert(bool); extern macro Print(Object); extern macro DebugBreak(); -extern transitioning macro ToInteger_Inline(Context, Object): Number; +extern transitioning macro ToInteger_Inline(Context, JSAny): Number; extern transitioning macro ToInteger_Inline( - Context, Object, constexpr ToIntegerTruncationMode): Number; -extern transitioning macro ToLength_Inline(Context, Object): Number; -extern transitioning macro ToNumber_Inline(Context, Object): Number; -extern transitioning macro ToSmiIndex(implicit context: Context)(Object): + 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)(Object): +extern transitioning macro ToSmiLength(implicit context: Context)(JSAny): PositiveSmi labels IfRangeError; -extern transitioning macro ToString_Inline(Context, Object): String; +extern transitioning macro ToString_Inline(Context, JSAny): String; extern transitioning macro ToThisString(implicit context: Context)( - Object, String): String; + JSAny, String): String; extern transitioning macro ToThisValue(implicit context: Context)( - Object, constexpr PrimitiveType, constexpr string): Object; + JSAny, constexpr PrimitiveType, constexpr string): JSAny; extern transitioning macro GetProperty(implicit context: Context)( - Object, Object): Object; + JSAny, JSAny): JSAny; extern transitioning builtin SetProperty(implicit context: Context)( - Object, Object, Object); + JSAny, JSAny, JSAny); extern transitioning builtin SetPropertyInLiteral(implicit context: Context)( - Object, Object, Object); + JSAny, JSAny, JSAny); extern transitioning builtin DeleteProperty(implicit context: Context)( - Object, Object, LanguageMode): Object; + JSAny, JSAny | PrivateSymbol, LanguageMode): Boolean; extern transitioning builtin HasProperty(implicit context: Context)( - Object, Object): Boolean; + JSAny, JSAny): Boolean; extern transitioning macro HasProperty_Inline(implicit context: Context)( - JSReceiver, Object): Boolean; + JSReceiver, JSAny): Boolean; +extern builtin LoadIC(Context, JSAny, JSAny, Smi, FeedbackVector): JSAny; extern macro ThrowRangeError(implicit context: Context)( constexpr MessageTemplate): never; @@ -1510,43 +1675,60 @@ extern macro ThrowTypeError(implicit context: Context)( extern transitioning runtime ThrowTypeErrorIfStrict(implicit context: Context)( Smi, Object, Object): void; -extern macro ArraySpeciesCreate(Context, Object, Number): JSReceiver; +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, Object): void labels Bailout; + 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, Object): JSReceiver; + Constructor, JSAny): JSReceiver; extern macro Construct(implicit context: Context)( - Constructor, Object, Object): JSReceiver; + Constructor, JSAny, JSAny): JSReceiver; extern macro Construct(implicit context: Context)( - Constructor, Object, Object, Object): JSReceiver; + Constructor, JSAny, JSAny, JSAny): JSReceiver; extern macro ConstructWithTarget(implicit context: Context)( Constructor, JSReceiver): JSReceiver; extern macro ConstructWithTarget(implicit context: Context)( - Constructor, JSReceiver, Object): JSReceiver; + Constructor, JSReceiver, JSAny): JSReceiver; extern macro SpeciesConstructor(implicit context: Context)( - Object, JSReceiver): JSReceiver; + JSAny, JSReceiver): JSReceiver; extern macro ConstructorBuiltinsAssembler::IsDictionaryMap(Map): bool; extern macro CodeStubAssembler::AllocateNameDictionary(constexpr int32): NameDictionary; -extern builtin ToObject(Context, Object): JSReceiver; -extern macro ToObject_Inline(Context, Object): JSReceiver; +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: Object): String { +transitioning builtin ToString(context: Context, o: JSAny): String { return ToStringImpl(context, o); } -extern transitioning runtime ToStringRT(Context, Object): String; +extern transitioning runtime ToStringRT(Context, JSAny): String; extern transitioning builtin NonPrimitiveToPrimitive_String( - Context, Object): Object; + 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( @@ -1556,18 +1738,15 @@ extern macro LoadBufferObject(RawPtr, constexpr int32): Object; extern macro LoadBufferPointer(RawPtr, constexpr int32): RawPtr; extern macro LoadBufferSmi(RawPtr, constexpr int32): Smi; -extern macro LoadRoot(constexpr RootIndex): Object; -extern macro StoreRoot(constexpr RootIndex, Object): Object; - 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(Object, Object): Boolean; +extern macro StrictEqual(JSAny, JSAny): Boolean; extern macro SmiLexicographicCompare(Smi, Smi): Smi; -extern runtime ReThrow(Context, Object): never; +extern runtime ReThrow(Context, JSAny): never; extern runtime ThrowInvalidStringLength(Context): never; extern operator '==' macro WordEqual(RawPtr, RawPtr): bool; @@ -1638,38 +1817,51 @@ extern operator '<' macro Float64LessThan(float64, float64): bool; extern macro BranchIfNumberEqual(Number, Number): never labels Taken, NotTaken; operator '==' macro IsNumberEqual(a: Number, b: Number): bool { - return (BranchIfNumberEqual(a, b)) ? true : false; + BranchIfNumberEqual(a, b) otherwise return true, return false; } operator '!=' macro IsNumberNotEqual(a: Number, b: Number): bool { - return (BranchIfNumberEqual(a, b)) ? false : true; + return !(a == b); } -extern operator '<' macro BranchIfNumberLessThan(Number, Number): never +extern macro BranchIfNumberLessThan(Number, Number): never labels Taken, NotTaken; -extern operator '<=' macro BranchIfNumberLessThanOrEqual(Number, Number): never +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; +} -extern operator '>' macro BranchIfNumberGreaterThan(Number, Number): never - labels Taken, NotTaken; -extern operator '>=' macro BranchIfNumberGreaterThanOrEqual( - Number, Number): never +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 WordEqual. +// The type of all tagged values that can safely be compared with TaggedEqual. type TaggedWithIdentity = JSReceiver | FixedArrayBase | Oddball | Map | EmptyString; -extern operator '==' macro WordEqual(TaggedWithIdentity, Object): bool; -extern operator '==' macro WordEqual(Object, TaggedWithIdentity): bool; -extern operator '==' macro WordEqual( +extern operator '==' macro TaggedEqual(TaggedWithIdentity, Object): bool; +extern operator '==' macro TaggedEqual(Object, TaggedWithIdentity): bool; +extern operator '==' macro TaggedEqual( TaggedWithIdentity, TaggedWithIdentity): bool; -extern operator '!=' macro WordNotEqual(TaggedWithIdentity, Object): bool; -extern operator '!=' macro WordNotEqual(Object, TaggedWithIdentity): bool; -extern operator '!=' macro WordNotEqual( +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 WordEqual(Object, Object): bool; -extern macro WordNotEqual(Object, Object): bool; +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; @@ -1707,11 +1899,14 @@ 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; @@ -1732,6 +1927,8 @@ 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; @@ -1845,6 +2042,146 @@ Cast<Number>(o: Object): Number 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; @@ -1859,6 +2196,12 @@ Cast<Null>(o: HeapObject): Null 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; @@ -1928,6 +2271,12 @@ Cast<Context>(o: HeapObject): Context 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); @@ -1957,6 +2306,27 @@ Cast<Symbol>(o: HeapObject): Symbol 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; @@ -2014,7 +2384,13 @@ Cast<JSArgumentsObjectWithLength>(implicit context: Context)(o: HeapObject): Cast<FastJSRegExp>(implicit context: Context)(o: HeapObject): FastJSRegExp labels CastError { - if (regexp::BranchIfFastRegExp(o)) return %RawDownCast<FastJSRegExp>(o); + // 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; } @@ -2042,7 +2418,8 @@ Cast<FastJSArrayForRead>(implicit context: Context)(o: HeapObject): // Bailout if receiver has slow elements. const elementsKind: ElementsKind = LoadMapElementsKind(map); - if (!IsElementsKindLessThanOrEqual(elementsKind, LAST_FROZEN_ELEMENTS_KIND)) + if (!IsElementsKindLessThanOrEqual( + elementsKind, LAST_ANY_NONEXTENSIBLE_ELEMENTS_KIND)) goto CastError; // Verify that our prototype is the initial array prototype. @@ -2076,7 +2453,7 @@ Cast<FastJSArrayForReadWithNoCustomIteration>(implicit context: Context)( return %RawDownCast<FastJSArrayForReadWithNoCustomIteration>(a); } -Cast<JSReceiver>(implicit context: Context)(o: HeapObject): JSReceiver +Cast<JSReceiver>(o: HeapObject): JSReceiver labels CastError { if (IsJSReceiver(o)) return %RawDownCast<JSReceiver>(o); goto CastError; @@ -2103,6 +2480,21 @@ Cast<CoverageInfo>(implicit context: Context)(o: HeapObject): CoverageInfo 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; @@ -2132,8 +2524,8 @@ 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, Context): Map; -extern macro LoadJSArrayElementsMap(ElementsKind, Context): Map; +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; @@ -2157,6 +2549,7 @@ 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; @@ -2241,6 +2634,9 @@ FromConstexpr<ElementsKind, constexpr ElementsKind>(e: constexpr ElementsKind): 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); @@ -2384,20 +2780,9 @@ Convert<bint, Smi>(v: Smi): bint { return SmiToBInt(v); } -macro BranchIf<A: type, B: type>(implicit context: Context)(o: B): never - labels True, False { - Cast<A>(o) otherwise False; - goto True; -} - -macro BranchIfNot<A: type, B: type>(implicit context: Context)(o: B): never - labels True, False { - Cast<A>(o) otherwise True; - goto False; -} - macro Is<A: type, B: type>(implicit context: Context)(o: B): bool { - return (BranchIf<A, B>(o)) ? true : false; + Cast<A>(o) otherwise return false; + return true; } macro UnsafeCast<A: type>(implicit context: Context)(o: Object): A { @@ -2405,17 +2790,15 @@ macro UnsafeCast<A: type>(implicit context: Context)(o: Object): A { return %RawDownCast<A>(o); } -UnsafeCast<Object>(o: Object): Object { - return o; -} +extern macro FixedArrayMapConstant(): Map; +extern macro FixedCOWArrayMapConstant(): Map; +extern macro EmptyByteArrayConstant(): ByteArray; +extern macro EmptyFixedArrayConstant(): FixedArray; -const kFixedArrayMap: Map = - %RawDownCast<Map>(LoadRoot(kFixedArrayMapRootIndex)); -const kCOWMap: Map = %RawDownCast<Map>(LoadRoot(kFixedCOWArrayMapRootIndex)); -const kEmptyByteArray: ByteArray = - %RawDownCast<ByteArray>(LoadRoot(kEmptyByteArrayRootIndex)); -const kEmptyFixedArray: FixedArray = - %RawDownCast<FixedArray>(LoadRoot(kEmptyFixedArrayRootIndex)); +const kFixedArrayMap: Map = FixedArrayMapConstant(); +const kCOWMap: Map = FixedCOWArrayMapConstant(); +const kEmptyByteArray: ByteArray = EmptyByteArrayConstant(); +const kEmptyFixedArray: FixedArray = EmptyFixedArrayConstant(); extern macro IsPrototypeInitialArrayPrototype(implicit context: Context)(Map): bool; @@ -2478,6 +2861,8 @@ 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); @@ -2487,14 +2872,14 @@ operator '[]=' macro StoreFixedArrayDirect(a: FixedArray, i: Smi, v: Object) { } extern macro GetNumberDictionaryNumberOfElements(NumberDictionary): Smi; -extern macro GetIteratorMethod(implicit context: Context)(HeapObject): Object +extern macro GetIteratorMethod(implicit context: Context)(HeapObject): JSAny labels IfIteratorUndefined; extern macro LoadConstructorOrBackPointer(Map): Object; -extern macro BasicLoadNumberDictionaryElement(NumberDictionary, intptr): Object +extern macro BasicLoadNumberDictionaryElement(NumberDictionary, intptr): JSAny labels NotData, IfHole; -extern macro BasicStoreNumberDictionaryElement(NumberDictionary, intptr, Object) +extern macro BasicStoreNumberDictionaryElement(NumberDictionary, intptr, JSAny) labels NotData, IfHole, ReadOnly; extern macro IsFastElementsKind(ElementsKind): bool; @@ -2607,16 +2992,15 @@ macro GetRegExpLastMatchInfo(implicit context: Context)(): RegExpMatchInfo { LoadNativeContext(context)[REGEXP_LAST_MATCH_INFO_INDEX]); } -extern transitioning macro Call(Context, Callable, Object): Object; -extern transitioning macro Call(Context, Callable, Object, Object): Object; -extern transitioning macro Call( - Context, Callable, Object, Object, Object): Object; +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, Object, Object, Object, Object): Object; + Context, Callable, JSAny, JSAny, JSAny, JSAny): JSAny; extern transitioning macro Call( - Context, Callable, Object, Object, Object, Object, Object): Object; + Context, Callable, JSAny, JSAny, JSAny, JSAny, JSAny): JSAny; extern transitioning macro Call( - Context, Callable, Object, Object, Object, Object, Object, Object): Object; + Context, Callable, JSAny, JSAny, JSAny, JSAny, JSAny, JSAny): JSAny; extern builtin CloneFastJSArray(Context, FastJSArrayForCopy): JSArray; extern macro ExtractFixedArray(FixedArrayBase, Smi, Smi, Smi): FixedArrayBase; @@ -2665,20 +3049,24 @@ macro TorqueCopyElements( count); } -macro LoadElementNoHole<T: type>(a: JSArray, index: Smi): Object +macro LoadElementNoHole<T: type>(a: JSArray, index: Smi): JSAny labels IfHole; LoadElementNoHole<FixedArray>(implicit context: Context)( - a: JSArray, index: Smi): Object + a: JSArray, index: Smi): JSAny labels IfHole { try { const elements: FixedArray = Cast<FixedArray>(a.elements) otherwise Unexpected; - const e: Object = elements.objects[index]; - if (e == TheHole) { - goto IfHole; + const e = UnsafeCast<(JSAny | TheHole)>(elements.objects[index]); + typeswitch (e) { + case (TheHole): { + goto IfHole; + } + case (e: JSAny): { + return e; + } } - return e; } label Unexpected { unreachable; @@ -2686,7 +3074,7 @@ LoadElementNoHole<FixedArray>(implicit context: Context)( } LoadElementNoHole<FixedDoubleArray>(implicit context: Context)( - a: JSArray, index: Smi): Object + a: JSArray, index: Smi): JSAny labels IfHole { try { const elements: FixedDoubleArray = @@ -2717,7 +3105,7 @@ struct FastJSArrayWitness { this.unstable = %RawDownCast<FastJSArray>(this.stable); } - LoadElementNoHole(implicit context: Context)(k: Smi): Object + LoadElementNoHole(implicit context: Context)(k: Smi): JSAny labels FoundHole { if (this.hasDoubles) { return LoadElementNoHole<FixedDoubleArray>(this.unstable, k) @@ -2740,7 +3128,7 @@ struct FastJSArrayWitness { } } - LoadElementOrUndefined(implicit context: Context)(k: Smi): Object { + LoadElementOrUndefined(implicit context: Context)(k: Smi): JSAny { try { return this.LoadElementNoHole(k) otherwise FoundHole; } @@ -2760,7 +3148,7 @@ struct FastJSArrayWitness { this.unstable.length = newLength; } - Push(value: Object) labels Failed { + Push(value: JSAny) labels Failed { assert(this.arrayIsPushable); if (this.hasDoubles) { BuildAppendJSArray(HOLEY_DOUBLE_ELEMENTS, this.unstable, value) @@ -2832,7 +3220,7 @@ struct FastJSArrayForReadWitness { this.unstable = %RawDownCast<FastJSArrayForRead>(this.stable); } - LoadElementNoHole(implicit context: Context)(k: Smi): Object + LoadElementNoHole(implicit context: Context)(k: Smi): JSAny labels FoundHole { if (this.hasDoubles) { return LoadElementNoHole<FixedDoubleArray>(this.unstable, k) @@ -2876,6 +3264,7 @@ 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; @@ -2892,7 +3281,7 @@ extern macro IsJSArrayMap(Map): bool; extern macro IsExtensibleMap(Map): bool; extern macro IsJSPrimitiveWrapper(HeapObject): bool; extern macro IsCustomElementsReceiverInstanceType(int32): bool; -extern macro Typeof(Object): Object; +extern macro Typeof(JSAny): String; // Return true iff number is NaN. macro NumberIsNaN(number: Number): bool { @@ -2908,31 +3297,35 @@ macro NumberIsNaN(number: Number): bool { } extern macro GotoIfForceSlowPath() labels Taken; -extern macro BranchIfToBooleanIsTrue(Object): never +macro IsForceSlowPath(): bool { + GotoIfForceSlowPath() otherwise return true; + return false; +} + +extern macro BranchIfToBooleanIsTrue(JSAny): never labels Taken, NotTaken; -extern macro BranchIfToBooleanIsFalse(Object): never +extern macro BranchIfToBooleanIsFalse(JSAny): never labels Taken, NotTaken; -macro ToBoolean(obj: Object): bool { - if (BranchIfToBooleanIsTrue(obj)) { - return true; - } else { - return false; - } +macro ToBoolean(obj: JSAny): bool { + BranchIfToBooleanIsTrue(obj) otherwise return true, return false; } @export macro RequireObjectCoercible(implicit context: Context)( - value: Object, name: constexpr string): Object { + value: JSAny, name: constexpr string): JSAny { if (IsNullOrUndefined(value)) { ThrowTypeError(kCalledOnNullOrUndefined, name); } return value; } -extern macro BranchIfSameValue(Object, Object): never labels Taken, NotTaken; +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: Object, context: Context): Number +transitioning macro ToIndex(input: JSAny, context: Context): Number labels RangeError { if (input == Undefined) { return 0; @@ -2946,7 +3339,7 @@ transitioning macro ToIndex(input: Object, context: Context): Number return value; } -transitioning macro GetLengthProperty(implicit context: Context)(o: Object): +transitioning macro GetLengthProperty(implicit context: Context)(o: JSAny): Number { try { typeswitch (o) { @@ -2956,18 +3349,18 @@ transitioning macro GetLengthProperty(implicit context: Context)(o: Object): case (a: JSArgumentsObjectWithLength): { goto ToLength(a.length); } - case (Object): deferred { + case (JSAny): deferred { goto ToLength(GetProperty(o, kLengthString)); } } } - label ToLength(length: Object) deferred { + label ToLength(length: JSAny) deferred { return ToLength_Inline(context, length); } } transitioning macro GetMethod(implicit context: Context)( - o: Object, name: constexpr string): Callable labels IfNullOrUndefined { + o: JSAny, name: constexpr string): Callable labels IfNullOrUndefined { const value = GetProperty(o, name); if (value == Undefined || value == Null) goto IfNullOrUndefined; return Cast<Callable>(value) @@ -2976,44 +3369,37 @@ transitioning macro GetMethod(implicit context: Context)( extern macro NumberToString(Number): String; extern macro IsOneByteStringInstanceType(InstanceType): bool; -extern macro AllocateSeqOneByteString(implicit context: Context)(uint32): - String; -extern macro AllocateSeqTwoByteString(implicit context: Context)(uint32): - String; +extern macro AllocateSeqOneByteString(uint32): String; +extern macro AllocateSeqTwoByteString(uint32): String; extern macro ConvertToRelativeIndex(implicit context: Context)( - Object, intptr): intptr; + JSAny, intptr): intptr; -extern builtin ObjectToString(Context, Object): Object; +extern builtin ObjectToString(Context, JSAny): JSAny; extern builtin StringRepeat(Context, String, Number): String; struct KeyValuePair { - key: Object; - value: Object; + 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 { - try { - // Long-term, it's likely not a good idea to have this slow-path test here, - // since it fundamentally breaks the type system. - GotoIfForceSlowPath() otherwise ForceSlow; - } - label ForceSlow { - return 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()) return false; return Is<FastJSArray>(o); } @export macro BranchIfFastJSArray(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. - GotoIfForceSlowPath() otherwise False; - BranchIf<FastJSArray>(o) otherwise True, False; + if (IsFastJSArray(o, context)) { + goto True; + } else { + goto False; + } } @export @@ -3021,8 +3407,12 @@ 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. - GotoIfForceSlowPath() otherwise False; - BranchIf<FastJSArrayForRead>(o) otherwise True, False; + if (IsForceSlowPath()) goto False; + if (Is<FastJSArrayForRead>(o)) { + goto True; + } else { + goto False; + } } @export @@ -3037,7 +3427,7 @@ macro IsFastJSArrayForReadWithNoCustomIteration(context: Context, o: Object): } extern transitioning runtime -CreateDataProperty(implicit context: Context)(JSReceiver, Object, Object); +CreateDataProperty(implicit context: Context)(JSReceiver, JSAny, JSAny); namespace runtime { extern runtime @@ -3045,7 +3435,7 @@ namespace runtime { } transitioning builtin FastCreateDataProperty(implicit context: Context)( - receiver: JSReceiver, key: Object, value: Object): Object { + receiver: JSReceiver, key: JSAny, value: JSAny): Object { try { const array = Cast<FastJSArray>(receiver) otherwise Slow; const index: Smi = Cast<Smi>(key) otherwise goto Slow; @@ -3090,8 +3480,8 @@ transitioning builtin FastCreateDataProperty(implicit context: Context)( } @export -transitioning macro ToStringImpl(context: Context, o: Object): String { - let result: Object = o; +transitioning macro ToStringImpl(context: Context, o: JSAny): String { + let result: JSAny = o; while (true) { typeswitch (result) { case (num: Number): { @@ -3110,7 +3500,7 @@ transitioning macro ToStringImpl(context: Context, o: Object): String { case (Symbol): { ThrowTypeError(kSymbolToString); } - case (Object): { + case (JSAny): { return ToStringRT(context, o); } } @@ -3160,3 +3550,14 @@ builtin CheckNumberInRange(implicit context: Context)( unreachable; } } + +macro ReplaceTheHoleWithUndefined(o: JSAny | TheHole): JSAny { + typeswitch (o) { + case (TheHole): { + return Undefined; + } + case (a: JSAny): { + return a; + } + } +} |