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path: root/deps/v8/src/objects/arguments.tq
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-rw-r--r--deps/v8/src/objects/arguments.tq293
1 files changed, 146 insertions, 147 deletions
diff --git a/deps/v8/src/objects/arguments.tq b/deps/v8/src/objects/arguments.tq
index e24eefe6312..5211707eae9 100644
--- a/deps/v8/src/objects/arguments.tq
+++ b/deps/v8/src/objects/arguments.tq
@@ -29,6 +29,7 @@ extern shape JSStrictArgumentsObject extends JSArgumentsObject {
type SloppyArgumentsElements extends FixedArray;
@generateCppClass
+@generatePrint
extern class AliasedArgumentsEntry extends Struct {
aliased_context_slot: Smi;
}
@@ -36,169 +37,167 @@ extern class AliasedArgumentsEntry extends Struct {
// TODO(danno): This should be a namespace {} once supported
namespace arguments {
- macro NewJSStrictArgumentsObject(implicit context: Context)(
- elements: FixedArray): JSStrictArgumentsObject {
- const map = GetStrictArgumentsMap();
- return new JSStrictArgumentsObject{
- map,
- properties_or_hash: kEmptyFixedArray,
- elements,
- length: elements.length
- };
- }
+macro NewJSStrictArgumentsObject(implicit context: Context)(
+ elements: FixedArray): JSStrictArgumentsObject {
+ const map = GetStrictArgumentsMap();
+ return new JSStrictArgumentsObject{
+ map,
+ properties_or_hash: kEmptyFixedArray,
+ elements,
+ length: elements.length
+ };
+}
- macro NewJSSloppyArgumentsObject(implicit context: Context)(
- elements: FixedArray, callee: JSFunction): JSSloppyArgumentsObject {
- const map = GetSloppyArgumentsMap();
- return new JSSloppyArgumentsObject{
- map,
- properties_or_hash: kEmptyFixedArray,
- elements,
- length: elements.length,
- callee
- };
- }
+macro NewJSSloppyArgumentsObject(implicit context: Context)(
+ elements: FixedArray, callee: JSFunction): JSSloppyArgumentsObject {
+ const map = GetSloppyArgumentsMap();
+ return new JSSloppyArgumentsObject{
+ map,
+ properties_or_hash: kEmptyFixedArray,
+ elements,
+ length: elements.length,
+ callee
+ };
+}
- macro NewJSFastAliasedArgumentsObject(implicit context: Context)(
- elements: FixedArray, length: Smi,
- callee: JSFunction): JSSloppyArgumentsObject {
- // TODO(danno): FastAliasedArguments should really be a type for itself
- const map = GetFastAliasedArgumentsMap();
- return new JSSloppyArgumentsObject{
- map,
- properties_or_hash: kEmptyFixedArray,
- elements,
- length,
- callee
- };
- }
+macro NewJSFastAliasedArgumentsObject(implicit context: Context)(
+ elements: FixedArray, length: Smi,
+ callee: JSFunction): JSSloppyArgumentsObject {
+ // TODO(danno): FastAliasedArguments should really be a type for itself
+ const map = GetFastAliasedArgumentsMap();
+ return new JSSloppyArgumentsObject{
+ map,
+ properties_or_hash: kEmptyFixedArray,
+ elements,
+ length,
+ callee
+ };
+}
- struct ParameterMapIterator {
- macro Next(): Object labels NoMore {
- const currentMapSlotCopy = this.currentMapSlot++;
- if (currentMapSlotCopy > 1) {
- if (this.currentIndex == this.endInterationIndex) goto NoMore;
- this.currentIndex--;
- return Convert<Smi>(this.currentIndex);
- } else if (currentMapSlotCopy == 0) {
- return this.context;
- } else {
- assert(currentMapSlotCopy == 1);
- return this.elements;
- }
+struct ParameterMapIterator {
+ macro Next(): Object labels NoMore {
+ const currentMapSlotCopy = this.currentMapSlot++;
+ if (currentMapSlotCopy > 1) {
+ if (this.currentIndex == this.endInterationIndex) goto NoMore;
+ this.currentIndex--;
+ return Convert<Smi>(this.currentIndex);
+ } else if (currentMapSlotCopy == 0) {
+ return this.context;
+ } else {
+ assert(currentMapSlotCopy == 1);
+ return this.elements;
}
- const context: Context;
- const elements: FixedArray;
- currentIndex: intptr;
- const endInterationIndex: intptr;
- currentMapSlot: intptr;
}
+ const context: Context;
+ const elements: FixedArray;
+ currentIndex: intptr;
+ const endInterationIndex: intptr;
+ currentMapSlot: intptr;
+}
- macro NewParameterMapIterator(
- context: Context, elements: FixedArray, formalParameterCount: intptr,
- mappedCount: intptr): ParameterMapIterator {
- const flags = context.scope_info.flags;
- let contextHeaderSize: intptr = MIN_CONTEXT_SLOTS;
- if (flags.has_context_extension_slot) ++contextHeaderSize;
- // Copy the parameter slots and the holes in the arguments.
- // We need to fill in mapped_count slots. They index the context,
- // where parameters are stored in reverse order, at
- // context_header_size .. context_header_size+argument_count-1
- // The mapped parameter thus need to get indices
- // context_header_size+parameter_count-1 ..
- // context_header_size+argument_count-mapped_count
- // We loop from right to left.
- const afterLastContextIndex = contextHeaderSize + formalParameterCount;
- const firstContextIndex = afterLastContextIndex - mappedCount;
- return ParameterMapIterator{
- context,
- elements,
- currentIndex: afterLastContextIndex,
- endInterationIndex: firstContextIndex,
- currentMapSlot: 0
- };
- }
+macro NewParameterMapIterator(
+ context: Context, elements: FixedArray, formalParameterCount: intptr,
+ mappedCount: intptr): ParameterMapIterator {
+ const flags = context.scope_info.flags;
+ let contextHeaderSize: intptr = MIN_CONTEXT_SLOTS;
+ if (flags.has_context_extension_slot) ++contextHeaderSize;
+ // Copy the parameter slots and the holes in the arguments.
+ // We need to fill in mapped_count slots. They index the context,
+ // where parameters are stored in reverse order, at
+ // context_header_size .. context_header_size+argument_count-1
+ // The mapped parameter thus need to get indices
+ // context_header_size+parameter_count-1 ..
+ // context_header_size+argument_count-mapped_count
+ // We loop from right to left.
+ const afterLastContextIndex = contextHeaderSize + formalParameterCount;
+ const firstContextIndex = afterLastContextIndex - mappedCount;
+ return ParameterMapIterator{
+ context,
+ elements,
+ currentIndex: afterLastContextIndex,
+ endInterationIndex: firstContextIndex,
+ currentMapSlot: 0
+ };
+}
- struct ParameterValueIterator {
- macro Next(): Object labels NoMore() {
- if (this.mapped_count != 0) {
- this.mapped_count--;
- return TheHole;
- }
- if (this.current == this.arguments.length) goto NoMore;
- return this.arguments[this.current++];
+struct ParameterValueIterator {
+ macro Next(): Object labels NoMore() {
+ if (this.mapped_count != 0) {
+ this.mapped_count--;
+ return TheHole;
}
- mapped_count: intptr;
- const arguments: Arguments;
- current: intptr;
+ if (this.current == this.arguments.length) goto NoMore;
+ return this.arguments[this.current++];
}
+ mapped_count: intptr;
+ const arguments: Arguments;
+ current: intptr;
+}
- macro NewParameterValueIterator(mappedCount: intptr, arguments: Arguments):
- ParameterValueIterator {
- return ParameterValueIterator{
- mapped_count: mappedCount,
- arguments,
- current: mappedCount
- };
- }
+macro NewParameterValueIterator(
+ mappedCount: intptr, arguments: Arguments): ParameterValueIterator {
+ return ParameterValueIterator{
+ mapped_count: mappedCount,
+ arguments,
+ current: mappedCount
+ };
+}
- macro NewAllArguments(implicit context: Context)(
- frame: FrameWithArguments, argumentCount: intptr): JSArray {
- const map = GetFastPackedElementsJSArrayMap();
- const arguments = GetFrameArguments(frame, argumentCount);
- const it = ArgumentsIterator{arguments, current: 0};
- const elements = NewFixedArray(argumentCount, it);
- return NewJSArray(map, elements);
- }
+macro NewAllArguments(implicit context: Context)(
+ frame: FrameWithArguments, argumentCount: intptr): JSArray {
+ const map = GetFastPackedElementsJSArrayMap();
+ const arguments = GetFrameArguments(frame, argumentCount);
+ const it = ArgumentsIterator{arguments, current: 0};
+ const elements = NewFixedArray(argumentCount, it);
+ return NewJSArray(map, elements);
+}
- macro NewRestArguments(implicit context:
- Context)(info: FrameWithArgumentsInfo): JSArray {
- const argumentCount = Convert<intptr>(info.argument_count);
- const formalParameterCount = Convert<intptr>(info.formal_parameter_count);
- const map = GetFastPackedElementsJSArrayMap();
- const length = (formalParameterCount >= argumentCount) ?
- 0 :
- argumentCount - formalParameterCount;
- const arguments = GetFrameArguments(info.frame, argumentCount);
- const it = ArgumentsIterator{arguments, current: formalParameterCount};
- const elements = NewFixedArray(length, it);
- return NewJSArray(map, elements);
- }
+macro NewRestArguments(implicit context: Context)(info: FrameWithArgumentsInfo):
+ JSArray {
+ const argumentCount = Convert<intptr>(info.argument_count);
+ const formalParameterCount = Convert<intptr>(info.formal_parameter_count);
+ const map = GetFastPackedElementsJSArrayMap();
+ const length = (formalParameterCount >= argumentCount) ?
+ 0 :
+ argumentCount - formalParameterCount;
+ const arguments = GetFrameArguments(info.frame, argumentCount);
+ const it = ArgumentsIterator{arguments, current: formalParameterCount};
+ const elements = NewFixedArray(length, it);
+ return NewJSArray(map, elements);
+}
- macro NewStrictArguments(implicit context: Context)(
- info: FrameWithArgumentsInfo): JSStrictArgumentsObject {
- const argumentCount = Convert<intptr>(info.argument_count);
- const arguments = GetFrameArguments(info.frame, argumentCount);
+macro NewStrictArguments(implicit context: Context)(
+ info: FrameWithArgumentsInfo): JSStrictArgumentsObject {
+ const argumentCount = Convert<intptr>(info.argument_count);
+ const arguments = GetFrameArguments(info.frame, argumentCount);
+ const it = ArgumentsIterator{arguments, current: 0};
+ const elements = NewFixedArray(argumentCount, it);
+ return NewJSStrictArgumentsObject(elements);
+}
+
+macro NewSloppyArguments(implicit context: Context)(
+ info: FrameWithArgumentsInfo, callee: JSFunction): JSSloppyArgumentsObject {
+ const argumentCount = Convert<intptr>(info.argument_count);
+ const arguments = GetFrameArguments(info.frame, argumentCount);
+ const formalParameterCount = Convert<intptr>(info.formal_parameter_count);
+ if (formalParameterCount == 0) {
const it = ArgumentsIterator{arguments, current: 0};
const elements = NewFixedArray(argumentCount, it);
- return NewJSStrictArgumentsObject(elements);
- }
-
- macro NewSloppyArguments(implicit context: Context)(
- info: FrameWithArgumentsInfo,
- callee: JSFunction): JSSloppyArgumentsObject {
- const argumentCount = Convert<intptr>(info.argument_count);
- const arguments = GetFrameArguments(info.frame, argumentCount);
- const formalParameterCount = Convert<intptr>(info.formal_parameter_count);
- if (formalParameterCount == 0) {
- const it = ArgumentsIterator{arguments, current: 0};
- const elements = NewFixedArray(argumentCount, it);
- return NewJSSloppyArgumentsObject(elements, callee);
- }
- const mappedCount = IntPtrMin(formalParameterCount, argumentCount);
- const it = NewParameterValueIterator(mappedCount, arguments);
- const parameterValues = NewFixedArray(argumentCount, it);
- let paramIter = NewParameterMapIterator(
- context, parameterValues, formalParameterCount, mappedCount);
- const elementsLength =
- Convert<Smi>(mappedCount + kSloppyArgumentsParameterMapStart);
- const map = kSloppyArgumentsElementsMap;
- const elements = new
- FixedArray{map, length: elementsLength, objects: ...paramIter};
- const length = Convert<Smi>(argumentCount);
- return NewJSFastAliasedArgumentsObject(elements, length, callee);
+ return NewJSSloppyArgumentsObject(elements, callee);
}
-
+ const mappedCount = IntPtrMin(formalParameterCount, argumentCount);
+ const it = NewParameterValueIterator(mappedCount, arguments);
+ const parameterValues = NewFixedArray(argumentCount, it);
+ let paramIter = NewParameterMapIterator(
+ context, parameterValues, formalParameterCount, mappedCount);
+ const elementsLength =
+ Convert<Smi>(mappedCount + kSloppyArgumentsParameterMapStart);
+ const map = kSloppyArgumentsElementsMap;
+ const elements = new
+ FixedArray{map, length: elementsLength, objects: ...paramIter};
+ const length = Convert<Smi>(argumentCount);
+ return NewJSFastAliasedArgumentsObject(elements, length, callee);
+}
}
@export
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