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Unified Diff: src/objects.cc

Issue 2252783007: Revert of Use a custom Struct for stack trace storage (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Created 4 years, 4 months ago
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Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 1fc6085deb425dd4c5554e2593d523d7f01882fd..b133ee3f75c6d71e04370b8b61617f34fb90af6c 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -13122,616 +13122,6 @@
Script* Script::Iterator::Next() { return iterator_.Next<Script>(); }
-namespace {
-
-int JSSTGetPosition(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- return frame->abstract_code()->SourcePosition(frame->offset());
-}
-
-Handle<Object> JSSTGetFileName(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- Object* script = frame->function()->shared()->script();
- if (!script->IsScript()) return isolate->factory()->null_value();
- return Handle<Object>(Script::cast(script)->name(), isolate);
-}
-
-Handle<Object> JSSTGetFunctionName(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
-
- Handle<JSFunction> function = handle(frame->function());
- Handle<String> result = JSFunction::GetName(function);
- if (result->length() != 0) return result;
-
- Handle<Object> script(function->shared()->script(), isolate);
- if (script->IsScript() &&
- Handle<Script>::cast(script)->compilation_type() ==
- Script::COMPILATION_TYPE_EVAL) {
- return isolate->factory()->eval_string();
- }
-
- return isolate->factory()->null_value();
-}
-
-Handle<Object> JSSTGetScriptNameOrSourceUrl(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
-
- Object* script_obj = frame->function()->shared()->script();
- if (!script_obj->IsScript()) return isolate->factory()->null_value();
-
- Handle<Script> script(Script::cast(script_obj), isolate);
- Object* source_url = script->source_url();
- if (source_url->IsString()) return Handle<Object>(source_url, isolate);
-
- return Handle<Object>(script->name(), isolate);
-}
-
-bool CheckMethodName(Isolate* isolate, Handle<JSObject> obj, Handle<Name> name,
- Handle<JSFunction> fun,
- LookupIterator::Configuration config) {
- LookupIterator iter =
- LookupIterator::PropertyOrElement(isolate, obj, name, config);
- if (iter.state() == LookupIterator::DATA) {
- return iter.GetDataValue().is_identical_to(fun);
- } else if (iter.state() == LookupIterator::ACCESSOR) {
- Handle<Object> accessors = iter.GetAccessors();
- if (accessors->IsAccessorPair()) {
- Handle<AccessorPair> pair = Handle<AccessorPair>::cast(accessors);
- return pair->getter() == *fun || pair->setter() == *fun;
- }
- }
- return false;
-}
-
-Handle<Object> JSSTGetMethodName(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- Handle<JSFunction> fun = handle(frame->function());
- Handle<Object> recv_obj = handle(frame->receiver(), isolate);
-
- if (recv_obj->IsNull(isolate) || recv_obj->IsUndefined(isolate)) {
- return isolate->factory()->null_value();
- }
-
- Handle<JSReceiver> recv =
- Object::ToObject(isolate, recv_obj).ToHandleChecked();
- if (!recv->IsJSObject()) {
- return isolate->factory()->null_value();
- }
-
- Handle<JSObject> obj = Handle<JSObject>::cast(recv);
- Handle<Object> function_name(fun->shared()->name(), isolate);
- if (function_name->IsString()) {
- Handle<String> name = Handle<String>::cast(function_name);
- // ES2015 gives getters and setters name prefixes which must
- // be stripped to find the property name.
- if (name->IsUtf8EqualTo(CStrVector("get "), true) ||
- name->IsUtf8EqualTo(CStrVector("set "), true)) {
- name = isolate->factory()->NewProperSubString(name, 4, name->length());
- }
- if (CheckMethodName(isolate, obj, name, fun,
- LookupIterator::PROTOTYPE_CHAIN_SKIP_INTERCEPTOR)) {
- return name;
- }
- }
-
- HandleScope outer_scope(isolate);
- Handle<Object> result;
- for (PrototypeIterator iter(isolate, obj, kStartAtReceiver); !iter.IsAtEnd();
- iter.Advance()) {
- Handle<Object> current = PrototypeIterator::GetCurrent(iter);
- if (!current->IsJSObject()) break;
- Handle<JSObject> current_obj = Handle<JSObject>::cast(current);
- if (current_obj->IsAccessCheckNeeded()) break;
- Handle<FixedArray> keys =
- KeyAccumulator::GetOwnEnumPropertyKeys(isolate, current_obj);
- for (int i = 0; i < keys->length(); i++) {
- HandleScope inner_scope(isolate);
- if (!keys->get(i)->IsName()) continue;
- Handle<Name> name_key(Name::cast(keys->get(i)), isolate);
- if (!CheckMethodName(isolate, current_obj, name_key, fun,
- LookupIterator::OWN_SKIP_INTERCEPTOR)) {
- continue;
- }
- // Return null in case of duplicates to avoid confusion.
- if (!result.is_null()) return isolate->factory()->null_value();
- result = inner_scope.CloseAndEscape(name_key);
- }
- }
-
- if (!result.is_null()) return outer_scope.CloseAndEscape(result);
- return isolate->factory()->null_value();
-}
-
-Handle<Object> JSSTGetTypeName(Handle<StackTraceFrame> frame) {
- // TODO(jgruber): Check for strict/constructor here as in
- // CallSitePrototypeGetThis.
-
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- Handle<Object> recv = handle(frame->receiver(), isolate);
-
- if (recv->IsNull(isolate) || recv->IsUndefined(isolate))
- return isolate->factory()->null_value();
-
- if (recv->IsJSProxy()) return isolate->factory()->Proxy_string();
-
- Handle<JSReceiver> receiver_object =
- Object::ToObject(isolate, recv).ToHandleChecked();
- return JSReceiver::GetConstructorName(receiver_object);
-}
-
-Object* EvalFromFunctionName(Isolate* isolate, Handle<Script> script) {
- if (script->eval_from_shared()->IsUndefined(isolate))
- return *isolate->factory()->undefined_value();
-
- Handle<SharedFunctionInfo> shared(
- SharedFunctionInfo::cast(script->eval_from_shared()));
- // Find the name of the function calling eval.
- if (shared->name()->BooleanValue()) {
- return shared->name();
- }
-
- return shared->inferred_name();
-}
-
-Object* EvalFromScript(Isolate* isolate, Handle<Script> script) {
- if (script->eval_from_shared()->IsUndefined(isolate))
- return *isolate->factory()->undefined_value();
-
- Handle<SharedFunctionInfo> eval_from_shared(
- SharedFunctionInfo::cast(script->eval_from_shared()));
- return eval_from_shared->script()->IsScript()
- ? eval_from_shared->script()
- : *isolate->factory()->undefined_value();
-}
-
-MaybeHandle<String> FormatEvalOrigin(Isolate* isolate, Handle<Script> script) {
- Handle<Object> sourceURL = Script::GetNameOrSourceURL(script);
- if (!sourceURL->IsUndefined(isolate)) {
- DCHECK(sourceURL->IsString());
- return Handle<String>::cast(sourceURL);
- }
-
- IncrementalStringBuilder builder(isolate);
- builder.AppendCString("eval at ");
-
- Handle<Object> eval_from_function_name =
- handle(EvalFromFunctionName(isolate, script), isolate);
- if (eval_from_function_name->BooleanValue()) {
- Handle<String> str;
- ASSIGN_RETURN_ON_EXCEPTION(
- isolate, str, Object::ToString(isolate, eval_from_function_name),
- String);
- builder.AppendString(str);
- } else {
- builder.AppendCString("<anonymous>");
- }
-
- Handle<Object> eval_from_script_obj =
- handle(EvalFromScript(isolate, script), isolate);
- if (eval_from_script_obj->IsScript()) {
- Handle<Script> eval_from_script =
- Handle<Script>::cast(eval_from_script_obj);
- builder.AppendCString(" (");
- if (eval_from_script->compilation_type() == Script::COMPILATION_TYPE_EVAL) {
- // Eval script originated from another eval.
- Handle<String> str;
- ASSIGN_RETURN_ON_EXCEPTION(
- isolate, str, FormatEvalOrigin(isolate, eval_from_script), String);
- builder.AppendString(str);
- } else {
- DCHECK(eval_from_script->compilation_type() !=
- Script::COMPILATION_TYPE_EVAL);
- // eval script originated from "real" source.
- Handle<Object> name_obj = handle(eval_from_script->name(), isolate);
- if (eval_from_script->name()->IsString()) {
- builder.AppendString(Handle<String>::cast(name_obj));
-
- Script::PositionInfo info;
- if (eval_from_script->GetPositionInfo(script->GetEvalPosition(), &info,
- Script::NO_OFFSET)) {
- builder.AppendCString(":");
-
- Handle<String> str = isolate->factory()->NumberToString(
- handle(Smi::FromInt(info.line + 1), isolate));
- builder.AppendString(str);
-
- builder.AppendCString(":");
-
- str = isolate->factory()->NumberToString(
- handle(Smi::FromInt(info.column + 1), isolate));
- builder.AppendString(str);
- }
- } else {
- DCHECK(!eval_from_script->name()->IsString());
- builder.AppendCString("unknown source");
- }
- }
- builder.AppendCString(")");
- }
-
- Handle<String> result;
- ASSIGN_RETURN_ON_EXCEPTION(isolate, result, builder.Finish(), String);
- return result;
-}
-
-Handle<Object> JSSTGetEvalOrigin(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
-
- Handle<Object> script =
- handle(frame->function()->shared()->script(), isolate);
- if (!script->IsScript()) return isolate->factory()->undefined_value();
-
- return FormatEvalOrigin(isolate, Handle<Script>::cast(script))
- .ToHandleChecked();
-}
-
-// Return 1-based line number, including line offset.
-int JSSTGetLineNumber(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- const int pos = frame->GetPosition();
- if (pos >= 0) {
- Handle<Object> script_obj(frame->function()->shared()->script(), isolate);
- if (script_obj->IsScript()) {
- Handle<Script> script = Handle<Script>::cast(script_obj);
- return Script::GetLineNumber(script, pos) + 1;
- }
- }
- return -1;
-}
-
-// Return 1-based column number, including column offset if first line.
-int JSSTGetColumnNumber(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- const int pos = frame->GetPosition();
- if (pos >= 0) {
- Handle<Object> script_obj(frame->function()->shared()->script(), isolate);
- if (script_obj->IsScript()) {
- Handle<Script> script = Handle<Script>::cast(script_obj);
- return Script::GetColumnNumber(script, pos) + 1;
- }
- }
- return -1;
-}
-
-bool JSSTIsNative(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- Handle<Object> script(frame->function()->shared()->script(), isolate);
- return script->IsScript() &&
- Handle<Script>::cast(script)->type() == Script::TYPE_NATIVE;
-}
-
-bool JSSTIsToplevel(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- Object* recv = frame->receiver();
- return recv->IsJSGlobalProxy() || recv->IsNull(isolate) ||
- recv->IsUndefined(isolate);
-}
-
-bool JSSTIsEval(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- Handle<Object> script(frame->function()->shared()->script(), isolate);
- return script->IsScript() &&
- Handle<Script>::cast(script)->compilation_type() ==
- Script::COMPILATION_TYPE_EVAL;
-}
-
-bool JSSTIsConstructor(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- Object* recv = frame->receiver();
-
- if (frame->ForceConstructor()) return true;
- if (!recv->IsJSObject()) return false;
- Handle<Object> constructor =
- JSReceiver::GetDataProperty(Handle<JSObject>::cast(handle(recv, isolate)),
- isolate->factory()->constructor_string());
- return constructor.is_identical_to(handle(frame->function()));
-}
-
-bool IsNonEmptyString(Handle<Object> object) {
- return (object->IsString() && String::cast(*object)->length() > 0);
-}
-
-int StringIndexOf(Isolate* isolate, Handle<String> subject,
- Handle<String> pattern) {
- if (pattern->length() > subject->length()) return -1;
- return String::IndexOf(isolate, subject, pattern, 0);
-}
-
-// Returns true iff
-// 1. the subject ends with '.' + pattern, or
-// 2. subject == pattern.
-bool StringEndsWithMethodName(Isolate* isolate, Handle<String> subject,
- Handle<String> pattern) {
- if (String::Equals(subject, pattern)) return true;
-
- FlatStringReader subject_reader(isolate, String::Flatten(subject));
- FlatStringReader pattern_reader(isolate, String::Flatten(pattern));
-
- int pattern_index = pattern_reader.length() - 1;
- int subject_index = subject_reader.length() - 1;
- for (int i = 0; i <= pattern_reader.length(); i++) { // Iterate over len + 1.
- if (subject_index < 0) {
- return false;
- }
-
- const uc32 subject_char = subject_reader.Get(subject_index);
- if (i == pattern_reader.length()) {
- if (subject_char != '.') return false;
- } else if (subject_char != pattern_reader.Get(pattern_index)) {
- return false;
- }
-
- pattern_index--;
- subject_index--;
- }
-
- return true;
-}
-
-void AppendMethodCall(Isolate* isolate, Handle<StackTraceFrame> frame,
- IncrementalStringBuilder* builder) {
- Handle<Object> type_name = frame->GetTypeName();
- Handle<Object> method_name = frame->GetMethodName();
- Handle<Object> function_name = frame->GetFunctionName();
-
- if (IsNonEmptyString(function_name)) {
- Handle<String> function_string = Handle<String>::cast(function_name);
- if (IsNonEmptyString(type_name)) {
- Handle<String> type_string = Handle<String>::cast(type_name);
- bool starts_with_type_name =
- (StringIndexOf(isolate, function_string, type_string) == 0);
- if (!starts_with_type_name) {
- builder->AppendString(type_string);
- builder->AppendCharacter('.');
- }
- }
- builder->AppendString(function_string);
-
- if (IsNonEmptyString(method_name)) {
- Handle<String> method_string = Handle<String>::cast(method_name);
- if (!StringEndsWithMethodName(isolate, function_string, method_string)) {
- builder->AppendCString(" [as ");
- builder->AppendString(method_string);
- builder->AppendCharacter(']');
- }
- }
- } else {
- builder->AppendString(Handle<String>::cast(type_name));
- builder->AppendCharacter('.');
- if (IsNonEmptyString(method_name)) {
- builder->AppendString(Handle<String>::cast(method_name));
- } else {
- builder->AppendCString("<anonymous>");
- }
- }
-}
-
-void AppendFileLocation(Isolate* isolate, Handle<StackTraceFrame> frame,
- IncrementalStringBuilder* builder) {
- if (frame->IsNative()) {
- builder->AppendCString("native");
- return;
- }
-
- Handle<Object> file_name = frame->GetScriptNameOrSourceUrl();
- if (!file_name->IsString() && frame->IsEval()) {
- Handle<Object> eval_origin = frame->GetEvalOrigin();
- DCHECK(eval_origin->IsString());
- builder->AppendString(Handle<String>::cast(eval_origin));
- builder->AppendCString(", "); // Expecting source position to follow.
- }
-
- if (IsNonEmptyString(file_name)) {
- builder->AppendString(Handle<String>::cast(file_name));
- } else {
- // Source code does not originate from a file and is not native, but we
- // can still get the source position inside the source string, e.g. in
- // an eval string.
- builder->AppendCString("<anonymous>");
- }
-
- int line_number = frame->GetLineNumber();
- if (line_number != -1) {
- builder->AppendCharacter(':');
- Handle<String> line_string = isolate->factory()->NumberToString(
- handle(Smi::FromInt(line_number), isolate), isolate);
- builder->AppendString(line_string);
-
- int column_number = frame->GetColumnNumber();
- if (column_number != -1) {
- builder->AppendCharacter(':');
- Handle<String> column_string = isolate->factory()->NumberToString(
- handle(Smi::FromInt(column_number), isolate), isolate);
- builder->AppendString(column_string);
- }
- }
-}
-
-Handle<String> JSSTToString(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsJavaScriptFrame());
- Isolate* isolate = frame->GetIsolate();
- IncrementalStringBuilder builder(isolate);
-
- Handle<Object> function_name = frame->GetFunctionName();
-
- const bool is_toplevel = frame->IsToplevel();
- const bool is_constructor = frame->IsConstructor();
- const bool is_method_call = !(is_toplevel || is_constructor);
-
- if (is_method_call) {
- AppendMethodCall(isolate, frame, &builder);
- } else if (is_constructor) {
- builder.AppendCString("new ");
- if (IsNonEmptyString(function_name)) {
- builder.AppendString(Handle<String>::cast(function_name));
- } else {
- builder.AppendCString("<anonymous>");
- }
- } else if (IsNonEmptyString(function_name)) {
- builder.AppendString(Handle<String>::cast(function_name));
- } else {
- AppendFileLocation(isolate, frame, &builder);
- return builder.Finish().ToHandleChecked();
- }
-
- builder.AppendCString(" (");
- AppendFileLocation(isolate, frame, &builder);
- builder.AppendCString(")");
-
- return builder.Finish().ToHandleChecked();
-}
-
-int WasmSTGetPosition(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- const int off = frame->offset();
- return (off < 0) ? -1 - off : frame->abstract_code()->SourcePosition(off);
-}
-
-Handle<Object> WasmSTGetFileName(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- Isolate* isolate = frame->GetIsolate();
- return isolate->factory()->null_value();
-}
-
-Handle<Object> WasmSTGetFunctionName(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
-
- Isolate* isolate = frame->GetIsolate();
-
- return wasm::GetWasmFunctionNameOrNull(isolate,
- handle(frame->wasm_object(), isolate),
- frame->wasm_function_index());
-}
-
-Handle<Object> WasmSTGetScriptNameOrSourceUrl(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- Isolate* isolate = frame->GetIsolate();
- return isolate->factory()->null_value();
-}
-
-Handle<Object> WasmSTGetMethodName(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- Isolate* isolate = frame->GetIsolate();
- return isolate->factory()->null_value();
-}
-
-Handle<Object> WasmSTGetTypeName(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
-
- Isolate* isolate = frame->GetIsolate();
- Handle<Object> recv = handle(frame->wasm_object(), isolate);
-
- if (recv->IsUndefined(isolate)) return isolate->factory()->null_value();
-
- DCHECK(wasm::IsWasmObject(*recv));
- Handle<JSReceiver> receiver_object =
- Object::ToObject(isolate, recv).ToHandleChecked();
- return JSReceiver::GetConstructorName(receiver_object);
-}
-
-Handle<Object> WasmSTGetEvalOrigin(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- Isolate* isolate = frame->GetIsolate();
- return isolate->factory()->null_value();
-}
-
-int WasmSTGetLineNumber(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- return frame->wasm_function_index();
-}
-
-int WasmSTGetColumnNumber(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- return -1;
-}
-
-bool WasmSTIsNative(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- return false;
-}
-
-bool WasmSTIsToplevel(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- return false;
-}
-
-bool WasmSTIsEval(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- return false;
-}
-
-bool WasmSTIsConstructor(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- return false;
-}
-
-Handle<String> WasmSTToString(Handle<StackTraceFrame> frame) {
- DCHECK(frame->IsWasmFrame());
- Isolate* isolate = frame->GetIsolate();
- IncrementalStringBuilder builder(isolate);
-
- Handle<Object> name = frame->GetFunctionName();
- if (name->IsNull(isolate)) {
- builder.AppendCString("<WASM UNNAMED>");
- } else {
- DCHECK(name->IsString());
- builder.AppendString(Handle<String>::cast(name));
- }
-
- builder.AppendCString(" (<WASM>[");
-
- Handle<String> ix = isolate->factory()->NumberToString(
- handle(Smi::FromInt(frame->wasm_function_index()), isolate));
- builder.AppendString(ix);
-
- builder.AppendCString("]+");
-
- Handle<Object> pos = handle(Smi::FromInt(frame->GetPosition()), isolate);
- builder.AppendString(isolate->factory()->NumberToString(pos));
- builder.AppendCString(")");
-
- return builder.Finish().ToHandleChecked();
-}
-
-} // namespace
-
-#define STACK_TRACE_FRAME_DISPATCH(return_type, name) \
- return_type StackTraceFrame::name() { \
- if (IsJavaScriptFrame()) { \
- return JSST##name(handle(this)); \
- } else { \
- DCHECK(IsWasmFrame()); \
- return WasmST##name(handle(this)); \
- } \
- }
-
-STACK_TRACE_FRAME_DISPATCH(int, GetPosition)
-STACK_TRACE_FRAME_DISPATCH(Handle<Object>, GetFileName)
-STACK_TRACE_FRAME_DISPATCH(Handle<Object>, GetFunctionName)
-STACK_TRACE_FRAME_DISPATCH(Handle<Object>, GetScriptNameOrSourceUrl)
-STACK_TRACE_FRAME_DISPATCH(Handle<Object>, GetMethodName)
-STACK_TRACE_FRAME_DISPATCH(Handle<Object>, GetTypeName)
-STACK_TRACE_FRAME_DISPATCH(Handle<Object>, GetEvalOrigin)
-STACK_TRACE_FRAME_DISPATCH(int, GetLineNumber)
-STACK_TRACE_FRAME_DISPATCH(int, GetColumnNumber)
-STACK_TRACE_FRAME_DISPATCH(bool, IsNative)
-STACK_TRACE_FRAME_DISPATCH(bool, IsToplevel)
-STACK_TRACE_FRAME_DISPATCH(bool, IsEval)
-STACK_TRACE_FRAME_DISPATCH(bool, IsConstructor)
-STACK_TRACE_FRAME_DISPATCH(Handle<String>, ToString)
-#undef STACK_TRACE_FRAME_DISPATCH
SharedFunctionInfo::Iterator::Iterator(Isolate* isolate)
: script_iterator_(isolate),
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