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chromium / v8 / v8 / 4552a7e66bc78b625d340455ecf8c2cb6c2f9c6e / . / src / objects-printer.cc
blob: b322f4b9783827e4e23edb35e348e9a3343d88bf [file] [log] [blame]
// Copyright 2012 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/objects.h"
#include <iomanip>
#include <memory>
#include "src/bootstrapper.h"
#include "src/disasm.h"
#include "src/disassembler.h"
#include "src/interpreter/bytecodes.h"
#include "src/objects-inl.h"
#include "src/objects/arguments-inl.h"
#include "src/objects/data-handler-inl.h"
#include "src/objects/debug-objects-inl.h"
#include "src/objects/embedder-data-array-inl.h"
#include "src/objects/embedder-data-slot-inl.h"
#include "src/objects/feedback-cell-inl.h"
#include "src/objects/hash-table-inl.h"
#include "src/objects/js-array-buffer-inl.h"
#include "src/objects/js-array-inl.h"
#include "src/snapshot/embedded-data.h"
#ifdef V8_INTL_SUPPORT
#include "src/objects/js-break-iterator-inl.h"
#include "src/objects/js-collator-inl.h"
#endif // V8_INTL_SUPPORT
#include "src/objects/js-collection-inl.h"
#ifdef V8_INTL_SUPPORT
#include "src/objects/js-date-time-format-inl.h"
#endif // V8_INTL_SUPPORT
#include "src/objects/js-generator-inl.h"
#ifdef V8_INTL_SUPPORT
#include "src/objects/js-list-format-inl.h"
#include "src/objects/js-locale-inl.h"
#include "src/objects/js-number-format-inl.h"
#include "src/objects/js-plural-rules-inl.h"
#endif // V8_INTL_SUPPORT
#include "src/objects/js-regexp-inl.h"
#include "src/objects/js-regexp-string-iterator-inl.h"
#ifdef V8_INTL_SUPPORT
#include "src/objects/js-relative-time-format-inl.h"
#include "src/objects/js-segment-iterator-inl.h"
#include "src/objects/js-segmenter-inl.h"
#endif // V8_INTL_SUPPORT
#include "src/objects/js-weak-refs-inl.h"
#include "src/objects/literal-objects-inl.h"
#include "src/objects/microtask-inl.h"
#include "src/objects/module-inl.h"
#include "src/objects/promise-inl.h"
#include "src/objects/stack-frame-info-inl.h"
#include "src/objects/struct-inl.h"
#include "src/ostreams.h"
#include "src/regexp/jsregexp.h"
#include "src/transitions-inl.h"
#include "src/wasm/wasm-code-manager.h"
#include "src/wasm/wasm-engine.h"
#include "src/wasm/wasm-objects-inl.h"
namespace v8 {
namespace internal {
#ifdef OBJECT_PRINT
std::ostream& operator<<(std::ostream& os, const ObjectPtr o) {
os << reinterpret_cast<void*>(o.ptr());
return os;
}
void Object::Print() {
StdoutStream os;
this->Print(os);
os << std::flush;
}
void Object::Print(std::ostream& os) { // NOLINT
if (IsSmi()) {
os << "Smi: " << std::hex << "0x" << Smi::ToInt(this);
os << std::dec << " (" << Smi::ToInt(this) << ")\n";
} else {
HeapObject::cast(this)->HeapObjectPrint(os);
}
}
void HeapObject::PrintHeader(std::ostream& os, const char* id) { // NOLINT
os << reinterpret_cast<void*>(this) << ": [";
if (id != nullptr) {
os << id;
} else {
os << map()->instance_type();
}
os << "]";
MemoryChunk* chunk = MemoryChunk::FromAddress(
reinterpret_cast<Address>(const_cast<HeapObject*>(this)));
if (chunk->owner()->identity() == OLD_SPACE) os << " in OldSpace";
if (!IsMap()) os << "\n - map: " << Brief(map());
}
void HeapObjectPtr::PrintHeader(std::ostream& os, const char* id) { // NOLINT
os << reinterpret_cast<void*>(ptr()) << ": [";
if (id != nullptr) {
os << id;
} else {
os << map()->instance_type();
}
os << "]";
MemoryChunk* chunk = MemoryChunk::FromAddress(ptr());
if (chunk->owner()->identity() == OLD_SPACE) os << " in OldSpace";
if (!IsMap()) os << "\n - map: " << Brief(map());
}
void HeapObject::HeapObjectPrint(std::ostream& os) { // NOLINT
InstanceType instance_type = map()->instance_type();
if (instance_type < FIRST_NONSTRING_TYPE) {
String::cast(this)->StringPrint(os);
os << "\n";
return;
}
switch (instance_type) {
case SYMBOL_TYPE:
Symbol::cast(this)->SymbolPrint(os);
break;
case MAP_TYPE:
Map::cast(this)->MapPrint(os);
break;
case HEAP_NUMBER_TYPE:
HeapNumber::cast(this)->HeapNumberPrint(os);
os << "\n";
break;
case MUTABLE_HEAP_NUMBER_TYPE:
os << "<mutable ";
MutableHeapNumber::cast(this)->MutableHeapNumberPrint(os);
os << ">\n";
break;
case BIGINT_TYPE:
BigInt::cast(this)->BigIntPrint(os);
os << "\n";
break;
case EMBEDDER_DATA_ARRAY_TYPE:
EmbedderDataArray::cast(this)->EmbedderDataArrayPrint(os);
break;
case FIXED_DOUBLE_ARRAY_TYPE:
FixedDoubleArray::cast(this)->FixedDoubleArrayPrint(os);
break;
case FIXED_ARRAY_TYPE:
FixedArray::cast(this)->FixedArrayPrint(os);
break;
case AWAIT_CONTEXT_TYPE:
case BLOCK_CONTEXT_TYPE:
case CATCH_CONTEXT_TYPE:
case DEBUG_EVALUATE_CONTEXT_TYPE:
case EVAL_CONTEXT_TYPE:
case FUNCTION_CONTEXT_TYPE:
case MODULE_CONTEXT_TYPE:
case SCRIPT_CONTEXT_TYPE:
case WITH_CONTEXT_TYPE:
case SCRIPT_CONTEXT_TABLE_TYPE:
Context::cast(this)->ContextPrint(os);
break;
case NATIVE_CONTEXT_TYPE:
NativeContext::cast(this)->NativeContextPrint(os);
break;
case HASH_TABLE_TYPE:
case ORDERED_HASH_MAP_TYPE:
case ORDERED_HASH_SET_TYPE:
case ORDERED_NAME_DICTIONARY_TYPE:
case NAME_DICTIONARY_TYPE:
case GLOBAL_DICTIONARY_TYPE:
case SIMPLE_NUMBER_DICTIONARY_TYPE:
case STRING_TABLE_TYPE:
ObjectHashTable::cast(this)->ObjectHashTablePrint(os);
break;
case NUMBER_DICTIONARY_TYPE:
NumberDictionary::cast(this)->NumberDictionaryPrint(os);
break;
case EPHEMERON_HASH_TABLE_TYPE:
EphemeronHashTable::cast(this)->EphemeronHashTablePrint(os);
break;
case OBJECT_BOILERPLATE_DESCRIPTION_TYPE:
ObjectBoilerplateDescription::cast(this)
->ObjectBoilerplateDescriptionPrint(os);
break;
case PROPERTY_ARRAY_TYPE:
PropertyArray::cast(this)->PropertyArrayPrint(os);
break;
case BYTE_ARRAY_TYPE:
ByteArray::cast(this)->ByteArrayPrint(os);
break;
case BYTECODE_ARRAY_TYPE:
BytecodeArray::cast(this)->BytecodeArrayPrint(os);
break;
case DESCRIPTOR_ARRAY_TYPE:
DescriptorArray::cast(this)->DescriptorArrayPrint(os);
break;
case TRANSITION_ARRAY_TYPE:
TransitionArray::cast(this)->TransitionArrayPrint(os);
break;
case FEEDBACK_CELL_TYPE:
FeedbackCell::cast(this)->FeedbackCellPrint(os);
break;
case FEEDBACK_VECTOR_TYPE:
FeedbackVector::cast(this)->FeedbackVectorPrint(os);
break;
case FREE_SPACE_TYPE:
FreeSpace::cast(this)->FreeSpacePrint(os);
break;
#define PRINT_FIXED_TYPED_ARRAY(Type, type, TYPE, ctype) \
case Fixed##Type##Array::kInstanceType: \
Fixed##Type##Array::cast(this)->FixedTypedArrayPrint(os); \
break;
TYPED_ARRAYS(PRINT_FIXED_TYPED_ARRAY)
#undef PRINT_FIXED_TYPED_ARRAY
case FILLER_TYPE:
os << "filler";
break;
case JS_OBJECT_TYPE: // fall through
case JS_API_OBJECT_TYPE:
case JS_SPECIAL_API_OBJECT_TYPE:
case JS_CONTEXT_EXTENSION_OBJECT_TYPE:
case JS_ASYNC_FUNCTION_OBJECT_TYPE:
case JS_ASYNC_GENERATOR_OBJECT_TYPE:
case JS_ARGUMENTS_TYPE:
case JS_ERROR_TYPE:
// TODO(titzer): debug printing for more wasm objects
case WASM_EXCEPTION_TYPE:
case WASM_GLOBAL_TYPE:
case WASM_MEMORY_TYPE:
case WASM_TABLE_TYPE:
JSObject::cast(this)->JSObjectPrint(os);
break;
case WASM_MODULE_TYPE:
WasmModuleObject::cast(this)->WasmModuleObjectPrint(os);
break;
case WASM_INSTANCE_TYPE:
WasmInstanceObject::cast(this)->WasmInstanceObjectPrint(os);
break;
case JS_GENERATOR_OBJECT_TYPE:
JSGeneratorObject::cast(this)->JSGeneratorObjectPrint(os);
break;
case JS_PROMISE_TYPE:
JSPromise::cast(this)->JSPromisePrint(os);
break;
case JS_ARRAY_TYPE:
JSArray::cast(this)->JSArrayPrint(os);
break;
case JS_REGEXP_TYPE:
JSRegExp::cast(this)->JSRegExpPrint(os);
break;
case JS_REGEXP_STRING_ITERATOR_TYPE:
JSRegExpStringIterator::cast(this)->JSRegExpStringIteratorPrint(os);
break;
case ODDBALL_TYPE:
Oddball::cast(this)->to_string()->Print(os);
break;
case JS_BOUND_FUNCTION_TYPE:
JSBoundFunction::cast(this)->JSBoundFunctionPrint(os);
break;
case JS_FUNCTION_TYPE:
JSFunction::cast(this)->JSFunctionPrint(os);
break;
case JS_GLOBAL_PROXY_TYPE:
JSGlobalProxy::cast(this)->JSGlobalProxyPrint(os);
break;
case JS_GLOBAL_OBJECT_TYPE:
JSGlobalObject::cast(this)->JSGlobalObjectPrint(os);
break;
case JS_VALUE_TYPE:
JSValue::cast(this)->JSValuePrint(os);
break;
case JS_DATE_TYPE:
JSDate::cast(this)->JSDatePrint(os);
break;
case CODE_TYPE:
Code::cast(this)->CodePrint(os);
break;
case CODE_DATA_CONTAINER_TYPE:
CodeDataContainer::cast(this)->CodeDataContainerPrint(os);
break;
case JS_PROXY_TYPE:
JSProxy::cast(this)->JSProxyPrint(os);
break;
case JS_SET_TYPE:
JSSet::cast(this)->JSSetPrint(os);
break;
case JS_MAP_TYPE:
JSMap::cast(this)->JSMapPrint(os);
break;
case JS_SET_KEY_VALUE_ITERATOR_TYPE:
case JS_SET_VALUE_ITERATOR_TYPE:
JSSetIterator::cast(this)->JSSetIteratorPrint(os);
break;
case JS_MAP_KEY_ITERATOR_TYPE:
case JS_MAP_KEY_VALUE_ITERATOR_TYPE:
case JS_MAP_VALUE_ITERATOR_TYPE:
JSMapIterator::cast(this)->JSMapIteratorPrint(os);
break;
case JS_WEAK_CELL_TYPE:
case JS_WEAK_REF_TYPE:
JSWeakCell::cast(this)->JSWeakCellPrint(os);
break;
case JS_WEAK_FACTORY_TYPE:
JSWeakFactory::cast(this)->JSWeakFactoryPrint(os);
break;
case JS_WEAK_FACTORY_CLEANUP_ITERATOR_TYPE:
JSWeakFactoryCleanupIterator::cast(this)
->JSWeakFactoryCleanupIteratorPrint(os);
break;
case JS_WEAK_MAP_TYPE:
JSWeakMap::cast(this)->JSWeakMapPrint(os);
break;
case JS_WEAK_SET_TYPE:
JSWeakSet::cast(this)->JSWeakSetPrint(os);
break;
case JS_MODULE_NAMESPACE_TYPE:
JSModuleNamespace::cast(this)->JSModuleNamespacePrint(os);
break;
case FOREIGN_TYPE:
Foreign::cast(this)->ForeignPrint(os);
break;
case CALL_HANDLER_INFO_TYPE:
CallHandlerInfo::cast(this)->CallHandlerInfoPrint(os);
break;
case PRE_PARSED_SCOPE_DATA_TYPE:
PreParsedScopeData::cast(this)->PreParsedScopeDataPrint(os);
break;
case UNCOMPILED_DATA_WITHOUT_PRE_PARSED_SCOPE_TYPE:
UncompiledDataWithoutPreParsedScope::cast(this)
->UncompiledDataWithoutPreParsedScopePrint(os);
break;
case UNCOMPILED_DATA_WITH_PRE_PARSED_SCOPE_TYPE:
UncompiledDataWithPreParsedScope::cast(this)
->UncompiledDataWithPreParsedScopePrint(os);
break;
case SHARED_FUNCTION_INFO_TYPE:
SharedFunctionInfo::cast(this)->SharedFunctionInfoPrint(os);
break;
case JS_MESSAGE_OBJECT_TYPE:
JSMessageObject::cast(this)->JSMessageObjectPrint(os);
break;
case CELL_TYPE:
Cell::cast(this)->CellPrint(os);
break;
case PROPERTY_CELL_TYPE:
PropertyCell::cast(this)->PropertyCellPrint(os);
break;
case JS_ARRAY_BUFFER_TYPE:
JSArrayBuffer::cast(this)->JSArrayBufferPrint(os);
break;
case JS_ARRAY_ITERATOR_TYPE:
JSArrayIterator::cast(this)->JSArrayIteratorPrint(os);
break;
case JS_TYPED_ARRAY_TYPE:
JSTypedArray::cast(this)->JSTypedArrayPrint(os);
break;
case JS_DATA_VIEW_TYPE:
JSDataView::cast(this)->JSDataViewPrint(os);
break;
#ifdef V8_INTL_SUPPORT
case JS_INTL_V8_BREAK_ITERATOR_TYPE:
JSV8BreakIterator::cast(this)->JSV8BreakIteratorPrint(os);
break;
case JS_INTL_COLLATOR_TYPE:
JSCollator::cast(this)->JSCollatorPrint(os);
break;
case JS_INTL_DATE_TIME_FORMAT_TYPE:
JSDateTimeFormat::cast(this)->JSDateTimeFormatPrint(os);
break;
case JS_INTL_LIST_FORMAT_TYPE:
JSListFormat::cast(this)->JSListFormatPrint(os);
break;
case JS_INTL_LOCALE_TYPE:
JSLocale::cast(this)->JSLocalePrint(os);
break;
case JS_INTL_NUMBER_FORMAT_TYPE:
JSNumberFormat::cast(this)->JSNumberFormatPrint(os);
break;
case JS_INTL_PLURAL_RULES_TYPE:
JSPluralRules::cast(this)->JSPluralRulesPrint(os);
break;
case JS_INTL_RELATIVE_TIME_FORMAT_TYPE:
JSRelativeTimeFormat::cast(this)->JSRelativeTimeFormatPrint(os);
break;
case JS_INTL_SEGMENT_ITERATOR_TYPE:
JSSegmentIterator::cast(this)->JSSegmentIteratorPrint(os);
break;
case JS_INTL_SEGMENTER_TYPE:
JSSegmenter::cast(this)->JSSegmenterPrint(os);
break;
#endif // V8_INTL_SUPPORT
#define MAKE_STRUCT_CASE(TYPE, Name, name) \
case TYPE: \
Name::cast(this)->Name##Print(os); \
break;
STRUCT_LIST(MAKE_STRUCT_CASE)
#undef MAKE_STRUCT_CASE
case ALLOCATION_SITE_TYPE:
AllocationSite::cast(this)->AllocationSitePrint(os);
break;
case LOAD_HANDLER_TYPE:
LoadHandler::cast(this)->LoadHandlerPrint(os);
break;
case STORE_HANDLER_TYPE:
StoreHandler::cast(this)->StoreHandlerPrint(os);
break;
case SCOPE_INFO_TYPE:
ScopeInfo::cast(this)->ScopeInfoPrint(os);
break;
case FEEDBACK_METADATA_TYPE:
FeedbackMetadata::cast(this)->FeedbackMetadataPrint(os);
break;
case WEAK_FIXED_ARRAY_TYPE:
WeakFixedArray::cast(this)->WeakFixedArrayPrint(os);
break;
case WEAK_ARRAY_LIST_TYPE:
WeakArrayList::cast(this)->WeakArrayListPrint(os);
break;
case INTERNALIZED_STRING_TYPE:
case EXTERNAL_INTERNALIZED_STRING_TYPE:
case ONE_BYTE_INTERNALIZED_STRING_TYPE:
case EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE:
case EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE:
case UNCACHED_EXTERNAL_INTERNALIZED_STRING_TYPE:
case UNCACHED_EXTERNAL_ONE_BYTE_INTERNALIZED_STRING_TYPE:
case UNCACHED_EXTERNAL_INTERNALIZED_STRING_WITH_ONE_BYTE_DATA_TYPE:
case STRING_TYPE:
case CONS_STRING_TYPE:
case EXTERNAL_STRING_TYPE:
case SLICED_STRING_TYPE:
case THIN_STRING_TYPE:
case ONE_BYTE_STRING_TYPE:
case CONS_ONE_BYTE_STRING_TYPE:
case EXTERNAL_ONE_BYTE_STRING_TYPE:
case SLICED_ONE_BYTE_STRING_TYPE:
case THIN_ONE_BYTE_STRING_TYPE:
case EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE:
case UNCACHED_EXTERNAL_STRING_TYPE:
case UNCACHED_EXTERNAL_ONE_BYTE_STRING_TYPE:
case UNCACHED_EXTERNAL_STRING_WITH_ONE_BYTE_DATA_TYPE:
case SMALL_ORDERED_HASH_MAP_TYPE:
case SMALL_ORDERED_HASH_SET_TYPE:
case SMALL_ORDERED_NAME_DICTIONARY_TYPE:
case JS_ASYNC_FROM_SYNC_ITERATOR_TYPE:
case JS_STRING_ITERATOR_TYPE:
// TODO(all): Handle these types too.
os << "UNKNOWN TYPE " << map()->instance_type();
UNREACHABLE();
break;
}
}
void ByteArray::ByteArrayPrint(std::ostream& os) { // NOLINT
os << "byte array, data starts at "
<< static_cast<void*>(GetDataStartAddress());
}
void BytecodeArray::BytecodeArrayPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "BytecodeArray");
Disassemble(os);
}
void FreeSpace::FreeSpacePrint(std::ostream& os) { // NOLINT
os << "free space, size " << Size();
}
template <class Traits>
void FixedTypedArray<Traits>::FixedTypedArrayPrint(
std::ostream& os) { // NOLINT
os << "fixed " << Traits::Designator();
}
bool JSObject::PrintProperties(std::ostream& os) { // NOLINT
if (HasFastProperties()) {
DescriptorArray descs = map()->instance_descriptors();
int nof_inobject_properties = map()->GetInObjectProperties();
int i = 0;
for (; i < map()->NumberOfOwnDescriptors(); i++) {
os << "\n ";
descs->GetKey(i)->NamePrint(os);
os << ": ";
PropertyDetails details = descs->GetDetails(i);
switch (details.location()) {
case kField: {
FieldIndex field_index = FieldIndex::ForDescriptor(map(), i);
if (IsUnboxedDoubleField(field_index)) {
os << "<unboxed double> " << RawFastDoublePropertyAt(field_index);
} else {
os << Brief(RawFastPropertyAt(field_index));
}
break;
}
case kDescriptor:
os << Brief(descs->GetStrongValue(i));
break;
}
os << " ";
details.PrintAsFastTo(os, PropertyDetails::kForProperties);
if (details.location() != kField) continue;
int field_index = details.field_index();
if (nof_inobject_properties <= field_index) {
field_index -= nof_inobject_properties;
os << " properties[" << field_index << "]";
}
}
return i > 0;
} else if (IsJSGlobalObject()) {
JSGlobalObject::cast(*this)->global_dictionary()->Print(os);
} else {
property_dictionary()->Print(os);
}
return true;
}
namespace {
template <class T>
bool IsTheHoleAt(T array, int index) {
return false;
}
template <>
bool IsTheHoleAt(FixedDoubleArray array, int index) {
return array->is_the_hole(index);
}
template <class T>
double GetScalarElement(T array, int index) {
if (IsTheHoleAt(array, index)) {
return std::numeric_limits<double>::quiet_NaN();
}
return array->get_scalar(index);
}
template <class T>
void DoPrintElements(std::ostream& os, Object* object) { // NOLINT
const bool print_the_hole = std::is_same<T, FixedDoubleArray>::value;
T array = T::cast(object);
if (array->length() == 0) return;
int previous_index = 0;
double previous_value = GetScalarElement(array, 0);
double value = 0.0;
int i;
for (i = 1; i <= array->length(); i++) {
if (i < array->length()) value = GetScalarElement(array, i);
bool values_are_nan = std::isnan(previous_value) && std::isnan(value);
if (i != array->length() && (previous_value == value || values_are_nan) &&
IsTheHoleAt(array, i - 1) == IsTheHoleAt(array, i)) {
continue;
}
os << "\n";
std::stringstream ss;
ss << previous_index;
if (previous_index != i - 1) {
ss << '-' << (i - 1);
}
os << std::setw(12) << ss.str() << ": ";
if (print_the_hole && IsTheHoleAt(array, i - 1)) {
os << "<the_hole>";
} else {
os << previous_value;
}
previous_index = i;
previous_value = value;
}
}
template <typename T>
void PrintFixedArrayElements(std::ostream& os, T array) {
// Print in array notation for non-sparse arrays.
Object* previous_value = array->length() > 0 ? array->get(0) : nullptr;
Object* value = nullptr;
int previous_index = 0;
int i;
for (i = 1; i <= array->length(); i++) {
if (i < array->length()) value = array->get(i);
if (previous_value == value && i != array->length()) {
continue;
}
os << "\n";
std::stringstream ss;
ss << previous_index;
if (previous_index != i - 1) {
ss << '-' << (i - 1);
}
os << std::setw(12) << ss.str() << ": " << Brief(previous_value);
previous_index = i;
previous_value = value;
}
}
void PrintDictionaryElements(std::ostream& os, FixedArrayBase elements) {
// Print some internal fields
NumberDictionary dict = NumberDictionary::cast(elements);
if (dict->requires_slow_elements()) {
os << "\n - requires_slow_elements";
} else {
os << "\n - max_number_key: " << dict->max_number_key();
}
dict->Print(os);
}
void PrintSloppyArgumentElements(std::ostream& os, ElementsKind kind,
SloppyArgumentsElements elements) {
FixedArray arguments_store = elements->arguments();
os << "\n 0: context: " << Brief(elements->context())
<< "\n 1: arguments_store: " << Brief(arguments_store)
<< "\n parameter to context slot map:";
for (uint32_t i = 0; i < elements->parameter_map_length(); i++) {
uint32_t raw_index = i + SloppyArgumentsElements::kParameterMapStart;
Object* mapped_entry = elements->get_mapped_entry(i);
os << "\n " << raw_index << ": param(" << i
<< "): " << Brief(mapped_entry);
if (mapped_entry->IsTheHole()) {
os << " in the arguments_store[" << i << "]";
} else {
os << " in the context";
}
}
if (arguments_store->length() == 0) return;
os << "\n }"
<< "\n - arguments_store: " << Brief(arguments_store) << " "
<< ElementsKindToString(arguments_store->map()->elements_kind()) << " {";
if (kind == FAST_SLOPPY_ARGUMENTS_ELEMENTS) {
PrintFixedArrayElements(os, arguments_store);
} else {
DCHECK_EQ(kind, SLOW_SLOPPY_ARGUMENTS_ELEMENTS);
PrintDictionaryElements(os, arguments_store);
}
}
void PrintEmbedderData(std::ostream& os, EmbedderDataSlot slot) {
DisallowHeapAllocation no_gc;
Object* value = slot.load_tagged();
os << Brief(value);
void* raw_pointer;
if (slot.ToAlignedPointer(&raw_pointer)) {
os << ", aligned pointer: " << raw_pointer;
}
}
} // namespace
void JSObject::PrintElements(std::ostream& os) { // NOLINT
// Don't call GetElementsKind, its validation code can cause the printer to
// fail when debugging.
os << " - elements: " << Brief(elements()) << " {";
if (elements()->length() == 0) {
os << " }\n";
return;
}
switch (map()->elements_kind()) {
case HOLEY_SMI_ELEMENTS:
case PACKED_SMI_ELEMENTS:
case HOLEY_ELEMENTS:
case PACKED_ELEMENTS:
case FAST_STRING_WRAPPER_ELEMENTS: {
PrintFixedArrayElements(os, FixedArray::cast(elements()));
break;
}
case HOLEY_DOUBLE_ELEMENTS:
case PACKED_DOUBLE_ELEMENTS: {
DoPrintElements<FixedDoubleArray>(os, elements());
break;
}
#define PRINT_ELEMENTS(Type, type, TYPE, elementType) \
case TYPE##_ELEMENTS: { \
DoPrintElements<Fixed##Type##Array>(os, elements()); \
break; \
}
TYPED_ARRAYS(PRINT_ELEMENTS)
#undef PRINT_ELEMENTS
case DICTIONARY_ELEMENTS:
case SLOW_STRING_WRAPPER_ELEMENTS:
PrintDictionaryElements(os, elements());
break;
case FAST_SLOPPY_ARGUMENTS_ELEMENTS:
case SLOW_SLOPPY_ARGUMENTS_ELEMENTS:
PrintSloppyArgumentElements(os, map()->elements_kind(),
SloppyArgumentsElements::cast(elements()));
break;
case NO_ELEMENTS:
break;
}
os << "\n }\n";
}
static void JSObjectPrintHeader(std::ostream& os, JSObject obj,
const char* id) { // NOLINT
Isolate* isolate = obj->GetIsolate();
obj->PrintHeader(os, id);
// Don't call GetElementsKind, its validation code can cause the printer to
// fail when debugging.
os << " [";
if (obj->HasFastProperties()) {
os << "FastProperties";
} else {
os << "DictionaryProperties";
}
PrototypeIterator iter(isolate, obj);
os << "]\n - prototype: " << Brief(iter.GetCurrent());
os << "\n - elements: " << Brief(obj->elements()) << " ["
<< ElementsKindToString(obj->map()->elements_kind());
if (obj->elements()->IsCowArray()) os << " (COW)";
os << "]";
Object* hash = obj->GetHash();
if (hash->IsSmi()) {
os << "\n - hash: " << Brief(hash);
}
if (obj->GetEmbedderFieldCount() > 0) {
os << "\n - embedder fields: " << obj->GetEmbedderFieldCount();
}
}
static void JSObjectPrintBody(std::ostream& os,
JSObject obj, // NOLINT
bool print_elements = true) {
os << "\n - properties: ";
Object* properties_or_hash = obj->raw_properties_or_hash();
if (!properties_or_hash->IsSmi()) {
os << Brief(properties_or_hash);
}
os << " {";
if (obj->PrintProperties(os)) os << "\n ";
os << "}\n";
if (print_elements && obj->elements()->length() > 0) {
obj->PrintElements(os);
}
int embedder_fields = obj->GetEmbedderFieldCount();
if (embedder_fields > 0) {
os << " - embedder fields = {";
for (int i = 0; i < embedder_fields; i++) {
os << "\n ";
PrintEmbedderData(os, EmbedderDataSlot(obj, i));
}
os << "\n }\n";
}
}
void JSObject::JSObjectPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, nullptr);
JSObjectPrintBody(os, *this);
}
void JSGeneratorObject::JSGeneratorObjectPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSGeneratorObject");
os << "\n - function: " << Brief(function());
os << "\n - context: " << Brief(context());
os << "\n - receiver: " << Brief(receiver());
if (is_executing() || is_closed()) {
os << "\n - input: " << Brief(input_or_debug_pos());
} else {
DCHECK(is_suspended());
os << "\n - debug pos: " << Brief(input_or_debug_pos());
}
const char* mode = "(invalid)";
switch (resume_mode()) {
case kNext:
mode = ".next()";
break;
case kReturn:
mode = ".return()";
break;
case kThrow:
mode = ".throw()";
break;
}
os << "\n - resume mode: " << mode;
os << "\n - continuation: " << continuation();
if (is_closed()) os << " (closed)";
if (is_executing()) os << " (executing)";
if (is_suspended()) os << " (suspended)";
if (is_suspended()) {
DisallowHeapAllocation no_gc;
SharedFunctionInfo fun_info = function()->shared();
if (fun_info->HasSourceCode()) {
Script* script = Script::cast(fun_info->script());
int lin = script->GetLineNumber(source_position()) + 1;
int col = script->GetColumnNumber(source_position()) + 1;
String script_name = script->name()->IsString()
? String::cast(script->name())
: GetReadOnlyRoots().empty_string();
os << "\n - source position: " << source_position();
os << " (";
script_name->PrintUC16(os);
os << ", lin " << lin;
os << ", col " << col;
os << ")";
}
}
os << "\n - register file: " << Brief(parameters_and_registers());
JSObjectPrintBody(os, *this);
}
void JSArray::JSArrayPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSArray");
os << "\n - length: " << Brief(this->length());
JSObjectPrintBody(os, *this);
}
void JSPromise::JSPromisePrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSPromise");
os << "\n - status: " << JSPromise::Status(status());
if (status() == Promise::kPending) {
os << "\n - reactions: " << Brief(reactions());
} else {
os << "\n - result: " << Brief(result());
}
os << "\n - has_handler: " << has_handler();
JSObjectPrintBody(os, *this);
}
void JSRegExp::JSRegExpPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSRegExp");
os << "\n - data: " << Brief(data());
os << "\n - source: " << Brief(source());
JSObjectPrintBody(os, *this);
}
void JSRegExpStringIterator::JSRegExpStringIteratorPrint(
std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSRegExpStringIterator");
os << "\n - regex: " << Brief(iterating_regexp());
os << "\n - string: " << Brief(iterating_string());
os << "\n - done: " << done();
os << "\n - global: " << global();
os << "\n - unicode: " << unicode();
JSObjectPrintBody(os, *this);
}
void Symbol::SymbolPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "Symbol");
os << "\n - hash: " << Hash();
os << "\n - name: " << Brief(name());
if (name()->IsUndefined()) {
os << " (" << PrivateSymbolToName() << ")";
}
os << "\n - private: " << is_private();
}
void DescriptorArray::DescriptorArrayPrint(std::ostream& os) {
PrintHeader(os, "DescriptorArray");
os << "\n - enum_cache: ";
if (enum_cache()->keys()->length() == 0) {
os << "empty";
} else {
os << enum_cache()->keys()->length();
os << "\n - keys: " << Brief(enum_cache()->keys());
os << "\n - indices: " << Brief(enum_cache()->indices());
}
os << "\n - nof slack descriptors: " << number_of_slack_descriptors();
os << "\n - nof descriptors: " << number_of_descriptors();
PrintDescriptors(os);
}
void AliasedArgumentsEntry::AliasedArgumentsEntryPrint(
std::ostream& os) { // NOLINT
PrintHeader(os, "AliasedArgumentsEntry");
os << "\n - aliased_context_slot: " << aliased_context_slot();
}
namespace {
void PrintFixedArrayWithHeader(std::ostream& os, FixedArray array,
const char* type) {
array->PrintHeader(os, type);
os << "\n - length: " << array->length();
PrintFixedArrayElements(os, array);
os << "\n";
}
template <typename T>
void PrintHashTableWithHeader(std::ostream& os, T table, const char* type) {
table->PrintHeader(os, type);
os << "\n - length: " << table->length();
os << "\n - elements: " << table->NumberOfElements();
os << "\n - deleted: " << table->NumberOfDeletedElements();
os << "\n - capacity: " << table->Capacity();
os << "\n - elements: {";
for (int i = 0; i < table->Capacity(); i++) {
os << '\n'
<< std::setw(12) << i << ": " << Brief(table->KeyAt(i)) << " -> "
<< Brief(table->ValueAt(i));
}
os << "\n }\n";
}
template <typename T>
void PrintWeakArrayElements(std::ostream& os, T* array) {
// Print in array notation for non-sparse arrays.
MaybeObject previous_value =
array->length() > 0 ? array->Get(0) : MaybeObject(kNullAddress);
MaybeObject value;
int previous_index = 0;
int i;
for (i = 1; i <= array->length(); i++) {
if (i < array->length()) value = array->Get(i);
if (previous_value == value && i != array->length()) {
continue;
}
os << "\n";
std::stringstream ss;
ss << previous_index;
if (previous_index != i - 1) {
ss << '-' << (i - 1);
}
os << std::setw(12) << ss.str() << ": " << Brief(previous_value);
previous_index = i;
previous_value = value;
}
}
} // namespace
void EmbedderDataArray::EmbedderDataArrayPrint(std::ostream& os) {
PrintHeader(os, "EmbedderDataArray");
os << "\n - length: " << length();
EmbedderDataSlot start(*this, 0);
EmbedderDataSlot end(*this, length());
for (EmbedderDataSlot slot = start; slot < end; ++slot) {
os << "\n ";
PrintEmbedderData(os, slot);
}
os << "\n";
}
void FixedArray::FixedArrayPrint(std::ostream& os) {
PrintFixedArrayWithHeader(os, *this, "FixedArray");
}
namespace {
void PrintContextWithHeader(std::ostream& os, Context context,
const char* type) {
context->PrintHeader(os, type);
os << "\n - length: " << context->length();
os << "\n - scope_info: " << Brief(context->scope_info());
os << "\n - previous: " << Brief(context->previous());
os << "\n - extension_object: " << Brief(context->extension_object());
os << "\n - native_context: " << Brief(context->native_context());
PrintFixedArrayElements(os, context);
os << "\n";
}
} // namespace
void Context::ContextPrint(std::ostream& os) {
PrintContextWithHeader(os, *this, "Context");
}
void NativeContext::NativeContextPrint(std::ostream& os) {
PrintContextWithHeader(os, *this, "NativeContext");
os << " - microtask_queue: " << microtask_queue() << "\n";
}
void ObjectHashTable::ObjectHashTablePrint(std::ostream& os) {
PrintHashTableWithHeader(os, *this, "ObjectHashTable");
}
void NumberDictionary::NumberDictionaryPrint(std::ostream& os) {
PrintHashTableWithHeader(os, *this, "NumberDictionary");
}
void EphemeronHashTable::EphemeronHashTablePrint(std::ostream& os) {
PrintHashTableWithHeader(os, *this, "EphemeronHashTable");
}
void ObjectBoilerplateDescription::ObjectBoilerplateDescriptionPrint(
std::ostream& os) {
PrintFixedArrayWithHeader(os, *this, "ObjectBoilerplateDescription");
}
void PropertyArray::PropertyArrayPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "PropertyArray");
os << "\n - length: " << length();
os << "\n - hash: " << Hash();
PrintFixedArrayElements(os, *this);
os << "\n";
}
void FixedDoubleArray::FixedDoubleArrayPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "FixedDoubleArray");
os << "\n - length: " << length();
DoPrintElements<FixedDoubleArray>(os, *this);
os << "\n";
}
void WeakFixedArray::WeakFixedArrayPrint(std::ostream& os) {
PrintHeader(os, "WeakFixedArray");
os << "\n - length: " << length() << "\n";
PrintWeakArrayElements(os, this);
os << "\n";
}
void WeakArrayList::WeakArrayListPrint(std::ostream& os) {
PrintHeader(os, "WeakArrayList");
os << "\n - capacity: " << capacity();
os << "\n - length: " << length() << "\n";
PrintWeakArrayElements(os, this);
os << "\n";
}
void TransitionArray::TransitionArrayPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "TransitionArray");
PrintInternal(os);
}
void FeedbackCell::FeedbackCellPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "FeedbackCell");
ReadOnlyRoots roots = GetReadOnlyRoots();
if (map() == roots.no_closures_cell_map()) {
os << "\n - no closures";
} else if (map() == roots.one_closure_cell_map()) {
os << "\n - one closure";
} else if (map() == roots.many_closures_cell_map()) {
os << "\n - many closures";
} else {
os << "\n - Invalid FeedbackCell map";
}
os << " - value: " << Brief(value());
os << "\n";
}
void FeedbackVectorSpec::Print() {
StdoutStream os;
FeedbackVectorSpecPrint(os);
os << std::flush;
}
void FeedbackVectorSpec::FeedbackVectorSpecPrint(std::ostream& os) { // NOLINT
int slot_count = slots();
os << " - slot_count: " << slot_count;
if (slot_count == 0) {
os << " (empty)\n";
return;
}
for (int slot = 0; slot < slot_count;) {
FeedbackSlotKind kind = GetKind(FeedbackSlot(slot));
int entry_size = FeedbackMetadata::GetSlotSize(kind);
DCHECK_LT(0, entry_size);
os << "\n Slot #" << slot << " " << kind;
slot += entry_size;
}
os << "\n";
}
void FeedbackMetadata::FeedbackMetadataPrint(std::ostream& os) {
PrintHeader(os, "FeedbackMetadata");
os << "\n - slot_count: " << slot_count();
FeedbackMetadataIterator iter(*this);
while (iter.HasNext()) {
FeedbackSlot slot = iter.Next();
FeedbackSlotKind kind = iter.kind();
os << "\n Slot " << slot << " " << kind;
}
os << "\n";
}
void FeedbackVector::FeedbackVectorPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "FeedbackVector");
os << "\n - length: " << length();
if (length() == 0) {
os << " (empty)\n";
return;
}
os << "\n - shared function info: " << Brief(shared_function_info());
os << "\n - optimized code/marker: ";
if (has_optimized_code()) {
os << Brief(optimized_code());
} else {
os << optimization_marker();
}
os << "\n - invocation count: " << invocation_count();
os << "\n - profiler ticks: " << profiler_ticks();
FeedbackMetadataIterator iter(metadata());
while (iter.HasNext()) {
FeedbackSlot slot = iter.Next();
FeedbackSlotKind kind = iter.kind();
os << "\n - slot " << slot << " " << kind << " ";
FeedbackSlotPrint(os, slot);
int entry_size = iter.entry_size();
if (entry_size > 0) os << " {";
for (int i = 0; i < entry_size; i++) {
int index = GetIndex(slot) + i;
os << "\n [" << index << "]: " << Brief(get(index));
}
if (entry_size > 0) os << "\n }";
}
os << "\n";
}
void FeedbackVector::FeedbackSlotPrint(std::ostream& os,
FeedbackSlot slot) { // NOLINT
FeedbackNexus nexus(*this, slot);
nexus.Print(os);
}
void FeedbackNexus::Print(std::ostream& os) { // NOLINT
switch (kind()) {
case FeedbackSlotKind::kCall:
case FeedbackSlotKind::kLoadProperty:
case FeedbackSlotKind::kLoadKeyed:
case FeedbackSlotKind::kLoadGlobalInsideTypeof:
case FeedbackSlotKind::kLoadGlobalNotInsideTypeof:
case FeedbackSlotKind::kStoreNamedSloppy:
case FeedbackSlotKind::kStoreNamedStrict:
case FeedbackSlotKind::kStoreOwnNamed:
case FeedbackSlotKind::kStoreGlobalSloppy:
case FeedbackSlotKind::kStoreGlobalStrict:
case FeedbackSlotKind::kStoreKeyedSloppy:
case FeedbackSlotKind::kInstanceOf:
case FeedbackSlotKind::kStoreDataPropertyInLiteral:
case FeedbackSlotKind::kStoreKeyedStrict:
case FeedbackSlotKind::kStoreInArrayLiteral:
case FeedbackSlotKind::kCloneObject: {
os << InlineCacheState2String(StateFromFeedback());
break;
}
case FeedbackSlotKind::kBinaryOp: {
os << "BinaryOp:" << GetBinaryOperationFeedback();
break;
}
case FeedbackSlotKind::kCompareOp: {
os << "CompareOp:" << GetCompareOperationFeedback();
break;
}
case FeedbackSlotKind::kForIn: {
os << "ForIn:" << GetForInFeedback();
break;
}
case FeedbackSlotKind::kCreateClosure:
case FeedbackSlotKind::kLiteral:
case FeedbackSlotKind::kTypeProfile:
break;
case FeedbackSlotKind::kInvalid:
case FeedbackSlotKind::kKindsNumber:
UNREACHABLE();
break;
}
}
void JSValue::JSValuePrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSValue");
os << "\n - value: " << Brief(value());
JSObjectPrintBody(os, *this);
}
void JSMessageObject::JSMessageObjectPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSMessageObject");
os << "\n - type: " << static_cast<int>(type());
os << "\n - arguments: " << Brief(argument());
os << "\n - start_position: " << start_position();
os << "\n - end_position: " << end_position();
os << "\n - script: " << Brief(script());
os << "\n - stack_frames: " << Brief(stack_frames());
JSObjectPrintBody(os, *this);
}
void String::StringPrint(std::ostream& os) { // NOLINT
if (!HasOnlyOneByteChars()) {
os << "u";
}
if (StringShape(*this).IsInternalized()) {
os << "#";
} else if (StringShape(*this).IsCons()) {
os << "c\"";
} else if (StringShape(*this).IsThin()) {
os << ">\"";
} else {
os << "\"";
}
const char truncated_epilogue[] = "...<truncated>";
int len = length();
if (!FLAG_use_verbose_printer) {
if (len > 100) {
len = 100 - sizeof(truncated_epilogue);
}
}
for (int i = 0; i < len; i++) {
os << AsUC16(Get(i));
}
if (len != length()) {
os << truncated_epilogue;
}
if (!StringShape(*this).IsInternalized()) os << "\"";
}
void Name::NamePrint(std::ostream& os) { // NOLINT
if (IsString()) {
String::cast(*this)->StringPrint(os);
} else {
os << Brief(*this);
}
}
static const char* const weekdays[] = {
"???", "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"
};
void JSDate::JSDatePrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSDate");
os << "\n - value: " << Brief(value());
if (!year()->IsSmi()) {
os << "\n - time = NaN\n";
} else {
// TODO(svenpanne) Add some basic formatting to our streams.
ScopedVector<char> buf(100);
SNPrintF(buf, "\n - time = %s %04d/%02d/%02d %02d:%02d:%02d\n",
weekdays[weekday()->IsSmi() ? Smi::ToInt(weekday()) + 1 : 0],
year()->IsSmi() ? Smi::ToInt(year()) : -1,
month()->IsSmi() ? Smi::ToInt(month()) : -1,
day()->IsSmi() ? Smi::ToInt(day()) : -1,
hour()->IsSmi() ? Smi::ToInt(hour()) : -1,
min()->IsSmi() ? Smi::ToInt(min()) : -1,
sec()->IsSmi() ? Smi::ToInt(sec()) : -1);
os << buf.start();
}
JSObjectPrintBody(os, *this);
}
void JSProxy::JSProxyPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "JSProxy");
os << "\n - target: ";
target()->ShortPrint(os);
os << "\n - handler: ";
handler()->ShortPrint(os);
os << "\n";
}
void JSSet::JSSetPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSSet");
os << " - table: " << Brief(table());
JSObjectPrintBody(os, *this);
}
void JSMap::JSMapPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSMap");
os << " - table: " << Brief(table());
JSObjectPrintBody(os, *this);
}
void JSCollectionIterator::JSCollectionIteratorPrint(
std::ostream& os, const char* name) { // NOLINT
JSObjectPrintHeader(os, *this, name);
os << "\n - table: " << Brief(table());
os << "\n - index: " << Brief(index());
JSObjectPrintBody(os, *this);
}
void JSSetIterator::JSSetIteratorPrint(std::ostream& os) { // NOLINT
JSCollectionIteratorPrint(os, "JSSetIterator");
}
void JSMapIterator::JSMapIteratorPrint(std::ostream& os) { // NOLINT
JSCollectionIteratorPrint(os, "JSMapIterator");
}
void JSWeakCell::JSWeakCellPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSWeakCell");
os << "\n - factory: " << Brief(factory());
os << "\n - target: " << Brief(target());
os << "\n - holdings: " << Brief(holdings());
os << "\n - prev: " << Brief(prev());
os << "\n - next: " << Brief(next());
JSObjectPrintBody(os, *this);
}
void JSWeakFactory::JSWeakFactoryPrint(std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSWeakFactory");
os << "\n - native_context: " << Brief(native_context());
os << "\n - cleanup: " << Brief(cleanup());
os << "\n - active_cells: " << Brief(active_cells());
os << "\n - cleared_cells: " << Brief(cleared_cells());
JSObjectPrintBody(os, *this);
}
void JSWeakFactoryCleanupIterator::JSWeakFactoryCleanupIteratorPrint(
std::ostream& os) {
JSObjectPrintHeader(os, *this, "JSWeakFactoryCleanupIterator");
os << "\n - factory: " << Brief(factory());
JSObjectPrintBody(os, *this);
}
void WeakFactoryCleanupJobTask::WeakFactoryCleanupJobTaskPrint(
std::ostream& os) {
HeapObject::PrintHeader(os, "WeakFactoryCleanupJobTask");
os << "\n - factory: " << Brief(factory());
}
void JSWeakMap::JSWeakMapPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSWeakMap");
os << "\n - table: " << Brief(table());
JSObjectPrintBody(os, *this);
}
void JSWeakSet::JSWeakSetPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSWeakSet");
os << "\n - table: " << Brief(table());
JSObjectPrintBody(os, *this);
}
void JSArrayBuffer::JSArrayBufferPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSArrayBuffer");
os << "\n - backing_store: " << backing_store();
os << "\n - byte_length: " << byte_length();
if (is_external()) os << "\n - external";
if (is_detachable()) os << "\n - detachable";
if (was_detached()) os << "\n - detached";
if (is_shared()) os << "\n - shared";
if (is_wasm_memory()) os << "\n - is_wasm_memory";
if (is_growable()) os << "\n - growable";
JSObjectPrintBody(os, *this, !was_detached());
}
void JSTypedArray::JSTypedArrayPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSTypedArray");
os << "\n - buffer: " << Brief(buffer());
os << "\n - byte_offset: " << byte_offset();
os << "\n - byte_length: " << byte_length();
os << "\n - length: " << Brief(length());
if (WasDetached()) os << "\n - detached";
JSObjectPrintBody(os, *this, !WasDetached());
}
void JSArrayIterator::JSArrayIteratorPrint(std::ostream& os) { // NOLING
JSObjectPrintHeader(os, *this, "JSArrayIterator");
os << "\n - iterated_object: " << Brief(iterated_object());
os << "\n - next_index: " << Brief(next_index());
os << "\n - kind: " << kind();
JSObjectPrintBody(os, *this);
}
void JSDataView::JSDataViewPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSDataView");
os << "\n - buffer =" << Brief(buffer());
os << "\n - byte_offset: " << byte_offset();
os << "\n - byte_length: " << byte_length();
if (WasDetached()) os << "\n - detached";
JSObjectPrintBody(os, *this, !WasDetached());
}
void JSBoundFunction::JSBoundFunctionPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSBoundFunction");
os << "\n - bound_target_function: " << Brief(bound_target_function());
os << "\n - bound_this: " << Brief(bound_this());
os << "\n - bound_arguments: " << Brief(bound_arguments());
JSObjectPrintBody(os, *this);
}
void JSFunction::JSFunctionPrint(std::ostream& os) { // NOLINT
Isolate* isolate = GetIsolate();
JSObjectPrintHeader(os, *this, "Function");
os << "\n - function prototype: ";
if (has_prototype_slot()) {
if (has_prototype()) {
os << Brief(prototype());
if (map()->has_non_instance_prototype()) {
os << " (non-instance prototype)";
}
}
os << "\n - initial_map: ";
if (has_initial_map()) os << Brief(initial_map());
} else {
os << "<no-prototype-slot>";
}
os << "\n - shared_info: " << Brief(shared());
os << "\n - name: " << Brief(shared()->Name());
// Print Builtin name for builtin functions
int builtin_index = code()->builtin_index();
if (Builtins::IsBuiltinId(builtin_index) && !IsInterpreted()) {
os << "\n - builtin: " << isolate->builtins()->name(builtin_index);
}
os << "\n - formal_parameter_count: "
<< shared()->internal_formal_parameter_count();
os << "\n - kind: " << shared()->kind();
os << "\n - context: " << Brief(context());
os << "\n - code: " << Brief(code());
if (IsInterpreted()) {
os << "\n - interpreted";
if (shared()->HasBytecodeArray()) {
os << "\n - bytecode: " << shared()->GetBytecodeArray();
}
}
if (WasmExportedFunction::IsWasmExportedFunction(*this)) {
WasmExportedFunction function = WasmExportedFunction::cast(*this);
os << "\n - WASM instance "
<< reinterpret_cast<void*>(function->instance()->ptr());
os << "\n - WASM function index " << function->function_index();
}
shared()->PrintSourceCode(os);
JSObjectPrintBody(os, *this);
os << "\n - feedback vector: ";
if (!shared()->HasFeedbackMetadata()) {
os << "feedback metadata is not available in SFI\n";
} else if (has_feedback_vector()) {
feedback_vector()->FeedbackVectorPrint(os);
} else {
os << "not available\n";
}
}
void SharedFunctionInfo::PrintSourceCode(std::ostream& os) {
if (HasSourceCode()) {
os << "\n - source code: ";
String source = String::cast(Script::cast(script())->source());
int start = StartPosition();
int length = EndPosition() - start;
std::unique_ptr<char[]> source_string = source->ToCString(
DISALLOW_NULLS, FAST_STRING_TRAVERSAL, start, length, nullptr);
os << source_string.get();
}
}
void SharedFunctionInfo::SharedFunctionInfoPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "SharedFunctionInfo");
os << "\n - name: ";
if (HasSharedName()) {
os << Brief(Name());
} else {
os << "<no-shared-name>";
}
if (HasInferredName()) {
os << "\n - inferred name: " << Brief(inferred_name());
}
os << "\n - kind: " << kind();
if (needs_home_object()) {
os << "\n - needs_home_object";
}
os << "\n - function_map_index: " << function_map_index();
os << "\n - formal_parameter_count: " << internal_formal_parameter_count();
os << "\n - expected_nof_properties: " << expected_nof_properties();
os << "\n - language_mode: " << language_mode();
os << "\n - data: " << Brief(function_data());
os << "\n - code (from data): " << Brief(GetCode());
PrintSourceCode(os);
// Script files are often large, hard to read.
// os << "\n - script =";
// script()->Print(os);
if (is_named_expression()) {
os << "\n - named expression";
} else if (is_anonymous_expression()) {
os << "\n - anonymous expression";
} else if (is_declaration()) {
os << "\n - declaration";
}
os << "\n - function token position: " << function_token_position();
os << "\n - start position: " << StartPosition();
os << "\n - end position: " << EndPosition();
if (HasDebugInfo()) {
os << "\n - debug info: " << Brief(GetDebugInfo());
} else {
os << "\n - no debug info";
}
os << "\n - scope info: " << Brief(scope_info());
if (HasOuterScopeInfo()) {
os << "\n - outer scope info: " << Brief(GetOuterScopeInfo());
}
os << "\n - length: " << length();
os << "\n - feedback_metadata: ";
if (HasFeedbackMetadata()) {
feedback_metadata()->FeedbackMetadataPrint(os);
} else {
os << "<none>";
}
os << "\n";
}
void JSGlobalProxy::JSGlobalProxyPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSGlobalProxy");
if (!GetIsolate()->bootstrapper()->IsActive()) {
os << "\n - native context: " << Brief(native_context());
}
JSObjectPrintBody(os, *this);
}
void JSGlobalObject::JSGlobalObjectPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSGlobalObject");
if (!GetIsolate()->bootstrapper()->IsActive()) {
os << "\n - native context: " << Brief(native_context());
}
os << "\n - global proxy: " << Brief(global_proxy());
JSObjectPrintBody(os, *this);
}
void Cell::CellPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Cell");
os << "\n - value: " << Brief(value());
os << "\n";
}
void PropertyCell::PropertyCellPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PropertyCell");
os << "\n - name: ";
name()->NamePrint(os);
os << "\n - value: " << Brief(value());
os << "\n - details: ";
property_details().PrintAsSlowTo(os);
PropertyCellType cell_type = property_details().cell_type();
os << "\n - cell_type: ";
if (value()->IsTheHole()) {
switch (cell_type) {
case PropertyCellType::kUninitialized:
os << "Uninitialized";
break;
case PropertyCellType::kInvalidated:
os << "Invalidated";
break;
default:
os << "??? " << static_cast<int>(cell_type);
break;
}
} else {
switch (cell_type) {
case PropertyCellType::kUndefined:
os << "Undefined";
break;
case PropertyCellType::kConstant:
os << "Constant";
break;
case PropertyCellType::kConstantType:
os << "ConstantType"
<< " (";
switch (GetConstantType()) {
case PropertyCellConstantType::kSmi:
os << "Smi";
break;
case PropertyCellConstantType::kStableMap:
os << "StableMap";
break;
}
os << ")";
break;
case PropertyCellType::kMutable:
os << "Mutable";
break;
}
}
os << "\n";
}
void Code::CodePrint(std::ostream& os) { // NOLINT
PrintHeader(os, "Code");
os << "\n";
#ifdef ENABLE_DISASSEMBLER
if (FLAG_use_verbose_printer) {
Disassemble(nullptr, os);
}
#endif
}
void CodeDataContainer::CodeDataContainerPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "CodeDataContainer");
os << "\n - kind_specific_flags: " << kind_specific_flags();
os << "\n";
}
void Foreign::ForeignPrint(std::ostream& os) { // NOLINT
os << "foreign address : " << reinterpret_cast<void*>(foreign_address());
os << "\n";
}
void AccessorInfo::AccessorInfoPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "AccessorInfo");
os << "\n - name: " << Brief(name());
os << "\n - flags: " << flags();
os << "\n - getter: " << Brief(getter());
os << "\n - setter: " << Brief(setter());
os << "\n - js_getter: " << Brief(js_getter());
os << "\n - data: " << Brief(data());
os << "\n";
}
void CallbackTask::CallbackTaskPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "CallbackTask");
os << "\n - callback: " << Brief(callback());
os << "\n - data: " << Brief(data());
os << "\n";
}
void CallableTask::CallableTaskPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "CallableTask");
os << "\n - context: " << Brief(context());
os << "\n - callable: " << Brief(callable());
os << "\n";
}
void PromiseFulfillReactionJobTask::PromiseFulfillReactionJobTaskPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PromiseFulfillReactionJobTask");
os << "\n - argument: " << Brief(argument());
os << "\n - context: " << Brief(context());
os << "\n - handler: " << Brief(handler());
os << "\n - promise_or_capability: " << Brief(promise_or_capability());
os << "\n";
}
void PromiseRejectReactionJobTask::PromiseRejectReactionJobTaskPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PromiseRejectReactionJobTask");
os << "\n - argument: " << Brief(argument());
os << "\n - context: " << Brief(context());
os << "\n - handler: " << Brief(handler());
os << "\n - promise_or_capability: " << Brief(promise_or_capability());
os << "\n";
}
void PromiseResolveThenableJobTask::PromiseResolveThenableJobTaskPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PromiseResolveThenableJobTask");
os << "\n - context: " << Brief(context());
os << "\n - promise_to_resolve: " << Brief(promise_to_resolve());
os << "\n - then: " << Brief(then());
os << "\n - thenable: " << Brief(thenable());
os << "\n";
}
void PromiseCapability::PromiseCapabilityPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PromiseCapability");
os << "\n - promise: " << Brief(promise());
os << "\n - resolve: " << Brief(resolve());
os << "\n - reject: " << Brief(reject());
os << "\n";
}
void PromiseReaction::PromiseReactionPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PromiseReaction");
os << "\n - next: " << Brief(next());
os << "\n - reject_handler: " << Brief(reject_handler());
os << "\n - fulfill_handler: " << Brief(fulfill_handler());
os << "\n - promise_or_capability: " << Brief(promise_or_capability());
os << "\n";
}
void AsyncGeneratorRequest::AsyncGeneratorRequestPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AsyncGeneratorRequest");
const char* mode = "Invalid!";
switch (resume_mode()) {
case JSGeneratorObject::kNext:
mode = ".next()";
break;
case JSGeneratorObject::kReturn:
mode = ".return()";
break;
case JSGeneratorObject::kThrow:
mode = ".throw()";
break;
}
os << "\n - resume mode: " << mode;
os << "\n - value: " << Brief(value());
os << "\n - next: " << Brief(next());
os << "\n";
}
void ModuleInfoEntry::ModuleInfoEntryPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "ModuleInfoEntry");
os << "\n - export_name: " << Brief(export_name());
os << "\n - local_name: " << Brief(local_name());
os << "\n - import_name: " << Brief(import_name());
os << "\n - module_request: " << module_request();
os << "\n - cell_index: " << cell_index();
os << "\n - beg_pos: " << beg_pos();
os << "\n - end_pos: " << end_pos();
os << "\n";
}
void Module::ModulePrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Module");
os << "\n - origin: " << Brief(script()->GetNameOrSourceURL());
os << "\n - code: " << Brief(code());
os << "\n - exports: " << Brief(exports());
os << "\n - requested_modules: " << Brief(requested_modules());
os << "\n - script: " << Brief(script());
os << "\n - import_meta: " << Brief(import_meta());
os << "\n - status: " << status();
os << "\n - exception: " << Brief(exception());
os << "\n";
}
void JSModuleNamespace::JSModuleNamespacePrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSModuleNamespace");
os << "\n - module: " << Brief(module());
JSObjectPrintBody(os, *this);
}
void PrototypeInfo::PrototypeInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PrototypeInfo");
os << "\n - module namespace: " << Brief(module_namespace());
os << "\n - prototype users: " << Brief(prototype_users());
os << "\n - registry slot: " << registry_slot();
os << "\n - object create map: " << Brief(object_create_map());
os << "\n - should_be_fast_map: " << should_be_fast_map();
os << "\n";
}
void Tuple2::Tuple2Print(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Tuple2");
os << "\n - value1: " << Brief(value1());
os << "\n - value2: " << Brief(value2());
os << "\n";
}
void Tuple2Ptr::Tuple2Print(std::ostream& os) { // NOLINT
reinterpret_cast<Tuple2*>(ptr())->Tuple2Print(os);
}
void Tuple3::Tuple3Print(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Tuple3");
os << "\n - value1: " << Brief(value1());
os << "\n - value2: " << Brief(value2());
os << "\n - value3: " << Brief(value3());
os << "\n";
}
void ArrayBoilerplateDescription::ArrayBoilerplateDescriptionPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "ArrayBoilerplateDescription");
os << "\n - elements kind: " << elements_kind();
os << "\n - constant elements: " << Brief(constant_elements());
os << "\n";
}
void AsmWasmData::AsmWasmDataPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AsmWasmData");
os << "\n - native module: " << Brief(managed_native_module());
os << "\n - export_wrappers: " << Brief(export_wrappers());
os << "\n - offset table: " << Brief(asm_js_offset_table());
os << "\n - uses bitset: " << uses_bitset()->value();
os << "\n";
}
void WasmDebugInfo::WasmDebugInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "WasmDebugInfo");
os << "\n - wasm_instance: " << Brief(wasm_instance());
os << "\n";
}
void WasmExceptionTag::WasmExceptionTagPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "WasmExceptionTag");
os << "\n - index: " << index();
os << "\n";
}
void WasmInstanceObject::WasmInstanceObjectPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "WasmInstanceObject");
os << "\n - module_object: " << Brief(module_object());
os << "\n - exports_object: " << Brief(exports_object());
os << "\n - native_context: " << Brief(native_context());
if (has_memory_object()) {
os << "\n - memory_object: " << Brief(memory_object());
}
if (has_globals_buffer()) {
os << "\n - globals_buffer: " << Brief(globals_buffer());
}
if (has_imported_mutable_globals_buffers()) {
os << "\n - imported_mutable_globals_buffers: "
<< Brief(imported_mutable_globals_buffers());
}
if (has_debug_info()) {
os << "\n - debug_info: " << Brief(debug_info());
}
if (has_table_object()) {
os << "\n - table_object: " << Brief(table_object());
}
os << "\n - imported_function_refs: " << Brief(imported_function_refs());
if (has_indirect_function_table_refs()) {
os << "\n - indirect_function_table_refs: "
<< Brief(indirect_function_table_refs());
}
if (has_managed_native_allocations()) {
os << "\n - managed_native_allocations: "
<< Brief(managed_native_allocations());
}
os << "\n - memory_start: " << static_cast<void*>(memory_start());
os << "\n - memory_size: " << memory_size();
os << "\n - memory_mask: " << AsHex(memory_mask());
os << "\n - imported_function_targets: "
<< static_cast<void*>(imported_function_targets());
os << "\n - globals_start: " << static_cast<void*>(globals_start());
os << "\n - imported_mutable_globals: "
<< static_cast<void*>(imported_mutable_globals());
os << "\n - indirect_function_table_size: " << indirect_function_table_size();
os << "\n - indirect_function_table_sig_ids: "
<< static_cast<void*>(indirect_function_table_sig_ids());
os << "\n - indirect_function_table_targets: "
<< static_cast<void*>(indirect_function_table_targets());
os << "\n";
}
void WasmExportedFunctionData::WasmExportedFunctionDataPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "WasmExportedFunctionData");
os << "\n - wrapper_code: " << Brief(wrapper_code());
os << "\n - instance: " << Brief(instance());
os << "\n - function_index: " << function_index();
os << "\n";
}
void WasmModuleObject::WasmModuleObjectPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "WasmModuleObject");
os << "\n - module: " << module();
os << "\n - native module: " << native_module();
os << "\n - export wrappers: " << Brief(export_wrappers());
os << "\n - script: " << Brief(script());
if (has_asm_js_offset_table()) {
os << "\n - asm_js_offset_table: " << Brief(asm_js_offset_table());
}
if (has_breakpoint_infos()) {
os << "\n - breakpoint_infos: " << Brief(breakpoint_infos());
}
os << "\n";
}
void LoadHandler::LoadHandlerPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "LoadHandler");
// TODO(ishell): implement printing based on handler kind
os << "\n - handler: " << Brief(smi_handler());
os << "\n - validity_cell: " << Brief(validity_cell());
int data_count = data_field_count();
if (data_count >= 1) {
os << "\n - data1: " << Brief(data1());
}
if (data_count >= 2) {
os << "\n - data2: " << Brief(data2());
}
if (data_count >= 3) {
os << "\n - data3: " << Brief(data3());
}
os << "\n";
}
void StoreHandler::StoreHandlerPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "StoreHandler");
// TODO(ishell): implement printing based on handler kind
os << "\n - handler: " << Brief(smi_handler());
os << "\n - validity_cell: " << Brief(validity_cell());
int data_count = data_field_count();
if (data_count >= 1) {
os << "\n - data1: " << Brief(data1());
}
if (data_count >= 2) {
os << "\n - data2: " << Brief(data2());
}
if (data_count >= 3) {
os << "\n - data3: " << Brief(data3());
}
os << "\n";
}
void AccessorPair::AccessorPairPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "AccessorPair");
os << "\n - getter: " << Brief(getter());
os << "\n - setter: " << Brief(setter());
os << "\n";
}
void AccessCheckInfo::AccessCheckInfoPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "AccessCheckInfo");
os << "\n - callback: " << Brief(callback());
os << "\n - named_interceptor: " << Brief(named_interceptor());
os << "\n - indexed_interceptor: " << Brief(indexed_interceptor());
os << "\n - data: " << Brief(data());
os << "\n";
}
void CallHandlerInfo::CallHandlerInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "CallHandlerInfo");
os << "\n - callback: " << Brief(callback());
os << "\n - js_callback: " << Brief(js_callback());
os << "\n - data: " << Brief(data());
os << "\n - side_effect_free: "
<< (IsSideEffectFreeCallHandlerInfo() ? "true" : "false");
os << "\n";
}
void InterceptorInfo::InterceptorInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "InterceptorInfo");
os << "\n - getter: " << Brief(getter());
os << "\n - setter: " << Brief(setter());
os << "\n - query: " << Brief(query());
os << "\n - deleter: " << Brief(deleter());
os << "\n - enumerator: " << Brief(enumerator());
os << "\n - data: " << Brief(data());
os << "\n";
}
void FunctionTemplateInfo::FunctionTemplateInfoPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "FunctionTemplateInfo");
os << "\n - class name: " << Brief(class_name());
os << "\n - tag: " << Brief(tag());
os << "\n - serial_number: " << Brief(serial_number());
os << "\n - property_list: " << Brief(property_list());
os << "\n - call_code: " << Brief(call_code());
os << "\n - property_accessors: " << Brief(property_accessors());
os << "\n - signature: " << Brief(signature());
os << "\n - cached_property_name: " << Brief(cached_property_name());
os << "\n - hidden_prototype: " << (hidden_prototype() ? "true" : "false");
os << "\n - undetectable: " << (undetectable() ? "true" : "false");
os << "\n - need_access_check: " << (needs_access_check() ? "true" : "false");
os << "\n - instantiated: " << (instantiated() ? "true" : "false");
os << "\n - rare_data: " << Brief(rare_data());
os << "\n";
}
void FunctionTemplateRareData::FunctionTemplateRareDataPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "FunctionTemplateRareData");
os << "\n - prototype_template: " << Brief(prototype_template());
os << "\n - prototype_provider_template: "
<< Brief(prototype_provider_template());
os << "\n - parent_template: " << Brief(parent_template());
os << "\n - named_property_handler: " << Brief(named_property_handler());
os << "\n - indexed_property_handler: " << Brief(indexed_property_handler());
os << "\n - instance_template: " << Brief(instance_template());
os << "\n - instance_call_handler: " << Brief(instance_call_handler());
os << "\n - access_check_info: " << Brief(access_check_info());
os << "\n";
}
void ObjectTemplateInfo::ObjectTemplateInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "ObjectTemplateInfo");
os << "\n - tag: " << Brief(tag());
os << "\n - serial_number: " << Brief(serial_number());
os << "\n - property_list: " << Brief(property_list());
os << "\n - property_accessors: " << Brief(property_accessors());
os << "\n - constructor: " << Brief(constructor());
os << "\n - embedder_field_count: " << embedder_field_count();
os << "\n - immutable_proto: " << (immutable_proto() ? "true" : "false");
os << "\n";
}
void AllocationSite::AllocationSitePrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AllocationSite");
if (this->HasWeakNext()) os << "\n - weak_next: " << Brief(weak_next());
os << "\n - dependent code: " << Brief(dependent_code());
os << "\n - nested site: " << Brief(nested_site());
os << "\n - memento found count: "
<< Brief(Smi::FromInt(memento_found_count()));
os << "\n - memento create count: "
<< Brief(Smi::FromInt(memento_create_count()));
os << "\n - pretenure decision: "
<< Brief(Smi::FromInt(pretenure_decision()));
os << "\n - transition_info: ";
if (!PointsToLiteral()) {
ElementsKind kind = GetElementsKind();
os << "Array allocation with ElementsKind " << ElementsKindToString(kind);
} else if (boilerplate()->IsJSArray()) {
os << "Array literal with boilerplate " << Brief(boilerplate());
} else {
os << "Object literal with boilerplate " << Brief(boilerplate());
}
os << "\n";
}
void AllocationMemento::AllocationMementoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AllocationMemento");
os << "\n - allocation site: ";
if (IsValid()) {
GetAllocationSite()->AllocationSitePrint(os);
} else {
os << "<invalid>\n";
}
}
void Script::ScriptPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Script");
os << "\n - source: " << Brief(source());
os << "\n - name: " << Brief(name());
os << "\n - line_offset: " << line_offset();
os << "\n - column_offset: " << column_offset();
os << "\n - type: " << type();
os << "\n - id: " << id();
os << "\n - context data: " << Brief(context_data());
os << "\n - compilation type: " << compilation_type();
os << "\n - line ends: " << Brief(line_ends());
if (has_eval_from_shared()) {
os << "\n - eval from shared: " << Brief(eval_from_shared());
}
if (is_wrapped()) {
os << "\n - wrapped arguments: " << Brief(wrapped_arguments());
}
os << "\n - eval from position: " << eval_from_position();
os << "\n - shared function infos: " << Brief(shared_function_infos());
os << "\n";
}
#ifdef V8_INTL_SUPPORT
void JSV8BreakIterator::JSV8BreakIteratorPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSV8BreakIterator");
os << "\n - locale: " << Brief(locale());
os << "\n - type: " << TypeAsString();
os << "\n - break iterator: " << Brief(break_iterator());
os << "\n - unicode string: " << Brief(unicode_string());
os << "\n - bound adopt text: " << Brief(bound_adopt_text());
os << "\n - bound first: " << Brief(bound_first());
os << "\n - bound next: " << Brief(bound_next());
os << "\n - bound current: " << Brief(bound_current());
os << "\n - bound break type: " << Brief(bound_break_type());
os << "\n";
}
void JSCollator::JSCollatorPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSCollator");
os << "\n - icu collator: " << Brief(icu_collator());
os << "\n - bound compare: " << Brief(bound_compare());
os << "\n - locale: " << Brief(locale());
JSObjectPrintBody(os, *this);
}
void JSDateTimeFormat::JSDateTimeFormatPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSDateTimeFormat");
os << "\n - icu locale: " << Brief(icu_locale());
os << "\n - icu simple date format: " << Brief(icu_simple_date_format());
os << "\n - bound format: " << Brief(bound_format());
os << "\n - hour cycle: " << HourCycleAsString();
JSObjectPrintBody(os, *this);
}
void JSListFormat::JSListFormatPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSListFormat");
os << "\n - locale: " << Brief(locale());
os << "\n - style: " << StyleAsString();
os << "\n - type: " << TypeAsString();
os << "\n - icu formatter: " << Brief(icu_formatter());
JSObjectPrintBody(os, *this);
}
void JSLocale::JSLocalePrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSLocale");
os << "\n - language: " << Brief(language());
os << "\n - script: " << Brief(script());
os << "\n - region: " << Brief(region());
os << "\n - baseName: " << Brief(base_name());
os << "\n - locale: " << Brief(locale());
os << "\n - calendar: " << Brief(calendar());
os << "\n - caseFirst: " << CaseFirstAsString();
os << "\n - collation: " << Brief(collation());
os << "\n - hourCycle: " << HourCycleAsString();
os << "\n - numeric: " << NumericAsString();
os << "\n - numberingSystem: " << Brief(numbering_system());
os << "\n";
}
void JSNumberFormat::JSNumberFormatPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSNumberFormat");
os << "\n - locale: " << Brief(locale());
os << "\n - icu_number_format: " << Brief(icu_number_format());
os << "\n - bound_format: " << Brief(bound_format());
os << "\n - style: " << StyleAsString();
os << "\n - currency_display: " << CurrencyDisplayAsString();
JSObjectPrintBody(os, *this);
}
void JSPluralRules::JSPluralRulesPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSPluralRules");
os << "\n - locale: " << Brief(locale());
os << "\n - type: " << TypeAsString();
os << "\n - icu plural rules: " << Brief(icu_plural_rules());
os << "\n - icu decimal format: " << Brief(icu_decimal_format());
JSObjectPrintBody(os, *this);
}
void JSRelativeTimeFormat::JSRelativeTimeFormatPrint(
std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSRelativeTimeFormat");
os << "\n - locale: " << Brief(locale());
os << "\n - style: " << StyleAsString();
os << "\n - numeric: " << NumericAsString();
os << "\n - icu formatter: " << Brief(icu_formatter());
os << "\n";
}
void JSSegmentIterator::JSSegmentIteratorPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSSegmentIterator");
os << "\n - icu break iterator: " << Brief(icu_break_iterator());
os << "\n - unicode string: " << Brief(unicode_string());
os << "\n - granularity: " << GranularityAsString();
os << "\n";
}
void JSSegmenter::JSSegmenterPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, *this, "JSSegmenter");
os << "\n - locale: " << Brief(locale());
os << "\n - granularity: " << GranularityAsString();
os << "\n - lineBreakStyle: " << LineBreakStyleAsString();
os << "\n - icu break iterator: " << Brief(icu_break_iterator());
JSObjectPrintBody(os, *this);
}
#endif // V8_INTL_SUPPORT
namespace {
void PrintScopeInfoList(ScopeInfo scope_info, std::ostream& os,
const char* list_name, int nof_internal_slots,
int start, int length) {
if (length <= 0) return;
int end = start + length;
os << "\n - " << list_name;
if (nof_internal_slots > 0) {
os << " " << start << "-" << end << " [internal slots]";
}
os << " {\n";
for (int i = nof_internal_slots; start < end; ++i, ++start) {
os << " - " << i << ": ";
String::cast(scope_info->get(start))->ShortPrint(os);
os << "\n";
}
os << " }";
}
} // namespace
void ScopeInfo::ScopeInfoPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "ScopeInfo");
if (length() == 0) {
os << "\n - length = 0\n";
return;
}
int flags = Flags();
os << "\n - parameters: " << ParameterCount();
os << "\n - context locals : " << ContextLocalCount();
os << "\n - scope type: " << scope_type();
if (CallsSloppyEval()) os << "\n - sloppy eval";
os << "\n - language mode: " << language_mode();
if (is_declaration_scope()) os << "\n - declaration scope";
if (HasReceiver()) {
os << "\n - receiver: " << ReceiverVariableField::decode(flags);
}
if (HasNewTarget()) os << "\n - needs new target";
if (HasFunctionName()) {
os << "\n - function name(" << FunctionVariableField::decode(flags)
<< "): ";
FunctionName()->ShortPrint(os);
}
if (IsAsmModule()) os << "\n - asm module";
if (HasSimpleParameters()) os << "\n - simple parameters";
os << "\n - function kind: " << function_kind();
if (HasOuterScopeInfo()) {
os << "\n - outer scope info: " << Brief(OuterScopeInfo());
}
if (HasFunctionName()) {
os << "\n - function name: " << Brief(FunctionName());
}
if (HasInferredFunctionName()) {
os << "\n - inferred function name: " << Brief(InferredFunctionName());
}
if (HasPositionInfo()) {
os << "\n - start position: " << StartPosition();
os << "\n - end position: " << EndPosition();
}
os << "\n - length: " << length();
if (length() > 0) {
PrintScopeInfoList(*this, os, "context slots", Context::MIN_CONTEXT_SLOTS,
ContextLocalNamesIndex(), ContextLocalCount());
// TODO(neis): Print module stuff if present.
}
os << "\n";
}
void DebugInfo::DebugInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "DebugInfo");
os << "\n - flags: " << flags();
os << "\n - debugger_hints: " << debugger_hints();
os << "\n - shared: " << Brief(shared());
os << "\n - script: " << Brief(script());
os << "\n - original bytecode array: " << Brief(original_bytecode_array());
os << "\n - debug bytecode array: " << Brief(debug_bytecode_array());
os << "\n - break_points: ";
break_points()->FixedArrayPrint(os);
os << "\n - coverage_info: " << Brief(coverage_info());
}
void StackFrameInfo::StackFrameInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "StackFrame");
os << "\n - line_number: " << line_number();
os << "\n - column_number: " << column_number();
os << "\n - script_id: " << script_id();
os << "\n - script_name: " << Brief(script_name());
os << "\n - script_name_or_source_url: "
<< Brief(script_name_or_source_url());
os << "\n - function_name: " << Brief(function_name());
os << "\n - is_eval: " << (is_eval() ? "true" : "false");
os << "\n - is_constructor: " << (is_constructor() ? "true" : "false");
os << "\n";
}
static void PrintBitMask(std::ostream& os, uint32_t value) { // NOLINT
for (int i = 0; i < 32; i++) {
if ((i & 7) == 0) os << " ";
os << (((value & 1) == 0) ? "_" : "x");
value >>= 1;
}
}
void LayoutDescriptor::Print() {
StdoutStream os;
this->Print(os);
os << std::flush;
}
void LayoutDescriptor::ShortPrint(std::ostream& os) {
if (IsSmi()) {
// Print tagged value for easy use with "jld" gdb macro.
os << reinterpret_cast<void*>(ptr());
} else {
os << Brief(*this);
}
}
void LayoutDescriptor::Print(std::ostream& os) { // NOLINT
os << "Layout descriptor: ";
if (IsFastPointerLayout()) {
os << "<all tagged>";
} else if (IsSmi()) {
os << "fast";
PrintBitMask(os, static_cast<uint32_t>(Smi::ToInt(*this)));
} else if (IsOddball() && IsUninitialized()) {
os << "<uninitialized>";
} else {
os << "slow";
int num_words = number_of_layout_words();
for (int i = 0; i < num_words; i++) {
if (i > 0) os << " |";
PrintBitMask(os, get_layout_word(i));
}
}
os << "\n";
}
void PreParsedScopeData::PreParsedScopeDataPrint(std::ostream& os) { // NOLINT
PrintHeader(os, "PreParsedScopeData");
os << "\n - scope_data: " << Brief(scope_data());
os << "\n - length: " << length();
for (int i = 0; i < length(); ++i) {
os << "\n - [" << i << "]: " << Brief(child_data(i));
}
os << "\n";
}
void UncompiledDataWithoutPreParsedScope::
UncompiledDataWithoutPreParsedScopePrint(std::ostream& os) { // NOLINT
PrintHeader(os, "UncompiledDataWithoutPreParsedScope");
os << "\n - start position: " << start_position();
os << "\n - end position: " << end_position();
os << "\n";
}
void UncompiledDataWithPreParsedScope::UncompiledDataWithPreParsedScopePrint(
std::ostream& os) { // NOLINT
PrintHeader(os, "UncompiledDataWithPreParsedScope");
os << "\n - start position: " << start_position();
os << "\n - end position: " << end_position();
os << "\n - pre_parsed_scope_data: " << Brief(pre_parsed_scope_data());
os << "\n";
}
void InterpreterData::InterpreterDataPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "InterpreterData");
os << "\n - bytecode_array: " << Brief(bytecode_array());
os << "\n - interpreter_trampoline: " << Brief(interpreter_trampoline());
os << "\n";
}
void MaybeObject::Print() {
StdoutStream os;
this->Print(os);
os << std::flush;
}
void MaybeObject::Print(std::ostream& os) {
Smi smi;
HeapObject* heap_object;
if (ToSmi(&smi)) {
smi->SmiPrint(os);
} else if (IsCleared()) {
os << "[cleared]";
} else if (GetHeapObjectIfWeak(&heap_object)) {
os << "[weak] ";
heap_object->HeapObjectPrint(os);
} else if (GetHeapObjectIfStrong(&heap_object)) {
heap_object->HeapObjectPrint(os);
} else {
UNREACHABLE();
}
}
#endif // OBJECT_PRINT
void HeapNumber::HeapNumberPrint(std::ostream& os) { os << value(); }
void MutableHeapNumber::MutableHeapNumberPrint(std::ostream& os) {
os << value();
}
// TODO(cbruni): remove once the new maptracer is in place.
void Name::NameShortPrint() {
if (this->IsString()) {
PrintF("%s", String::cast(*this)->ToCString().get());
} else {
DCHECK(this->IsSymbol());
Symbol s = Symbol::cast(*this);
if (s->name()->IsUndefined()) {
PrintF("#<%s>", s->PrivateSymbolToName());
} else {
PrintF("<%s>", String::cast(s->name())->ToCString().get());
}
}
}
// TODO(cbruni): remove once the new maptracer is in place.
int Name::NameShortPrint(Vector<char> str) {
if (this->IsString()) {
return SNPrintF(str, "%s", String::cast(*this)->ToCString().get());
} else {
DCHECK(this->IsSymbol());
Symbol s = Symbol::cast(*this);
if (s->name()->IsUndefined()) {
return SNPrintF(str, "#<%s>", s->PrivateSymbolToName());
} else {
return SNPrintF(str, "<%s>", String::cast(s->name())->ToCString().get());
}
}
}
void Map::PrintMapDetails(std::ostream& os) {
DisallowHeapAllocation no_gc;
this->MapPrint(os);
instance_descriptors()->PrintDescriptors(os);
}
void Map::MapPrint(std::ostream& os) { // NOLINT
#ifdef OBJECT_PRINT
PrintHeader(os, "Map");
#else
os << "Map=" << reinterpret_cast<void*>(ptr());
#endif
os << "\n - type: " << instance_type();
os << "\n - instance size: ";
if (instance_size() == kVariableSizeSentinel) {
os << "variable";
} else {
os << instance_size();
}
if (IsJSObjectMap()) {
os << "\n - inobject properties: " << GetInObjectProperties();
}
os << "\n - elements kind: " << ElementsKindToString(elements_kind());
os << "\n - unused property fields: " << UnusedPropertyFields();
os << "\n - enum length: ";
if (EnumLength() == kInvalidEnumCacheSentinel) {
os << "invalid";
} else {
os << EnumLength();
}
if (is_deprecated()) os << "\n - deprecated_map";
if (is_stable()) os << "\n - stable_map";
if (is_migration_target()) os << "\n - migration_target";
if (is_dictionary_map()) os << "\n - dictionary_map";
if (has_hidden_prototype()) os << "\n - has_hidden_prototype";
if (has_named_interceptor()) os << "\n - named_interceptor";
if (has_indexed_interceptor()) os << "\n - indexed_interceptor";
if (may_have_interesting_symbols()) os << "\n - may_have_interesting_symbols";
if (is_undetectable()) os << "\n - undetectable";
if (is_callable()) os << "\n - callable";
if (is_constructor()) os << "\n - constructor";
if (has_prototype_slot()) {
os << "\n - has_prototype_slot";
if (has_non_instance_prototype()) os << " (non-instance prototype)";
}
if (is_access_check_needed()) os << "\n - access_check_needed";
if (!is_extensible()) os << "\n - non-extensible";
if (is_prototype_map()) {
os << "\n - prototype_map";
os << "\n - prototype info: " << Brief(prototype_info());
} else {
os << "\n - back pointer: " << Brief(GetBackPointer());
}
os << "\n - prototype_validity cell: " << Brief(prototype_validity_cell());
os << "\n - instance descriptors " << (owns_descriptors() ? "(own) " : "")
<< "#" << NumberOfOwnDescriptors() << ": "
<< Brief(instance_descriptors());
if (FLAG_unbox_double_fields) {
os << "\n - layout descriptor: ";
layout_descriptor()->ShortPrint(os);
}
Isolate* isolate;
// Read-only maps can't have transitions, which is fortunate because we need
// the isolate to iterate over the transitions.
if (Isolate::FromWritableHeapObject(reinterpret_cast<HeapObject*>(ptr()),
&isolate)) {
DisallowHeapAllocation no_gc;
TransitionsAccessor transitions(isolate, *this, &no_gc);
int nof_transitions = transitions.NumberOfTransitions();
if (nof_transitions > 0) {
os << "\n - transitions #" << nof_transitions << ": ";
HeapObject* heap_object;
Smi smi;
if (raw_transitions()->ToSmi(&smi)) {
os << Brief(smi);
} else if (raw_transitions()->GetHeapObject(&heap_object)) {
os << Brief(heap_object);
}
#ifdef OBJECT_PRINT
transitions.PrintTransitions(os);
#endif // OBJECT_PRINT
}
}
os << "\n - prototype: " << Brief(prototype());
os << "\n - constructor: " << Brief(GetConstructor());
os << "\n - dependent code: " << Brief(dependent_code());
os << "\n - construction counter: " << construction_counter();
os << "\n";
}
void DescriptorArray::PrintDescriptors(std::ostream& os) {
for (int i = 0; i < number_of_descriptors(); i++) {
Name key = GetKey(i);
os << "\n [" << i << "]: ";
#ifdef OBJECT_PRINT
key->NamePrint(os);
#else
key->ShortPrint(os);
#endif
os << " ";
PrintDescriptorDetails(os, i, PropertyDetails::kPrintFull);
}
os << "\n";
}
void DescriptorArray::PrintDescriptorDetails(std::ostream& os, int descriptor,
PropertyDetails::PrintMode mode) {
PropertyDetails details = GetDetails(descriptor);
details.PrintAsFastTo(os, mode);
os << " @ ";
switch (details.location()) {
case kField: {
FieldType field_type = GetFieldType(descriptor);
field_type->PrintTo(os);
break;
}
case kDescriptor:
Object* value = GetStrongValue(descriptor);
os << Brief(value);
if (value->IsAccessorPair()) {
AccessorPair pair = AccessorPair::cast(value);
os << "(get: " << Brief(pair->getter())
<< ", set: " << Brief(pair->setter()) << ")";
}
break;
}
}
#if defined(DEBUG) || defined(OBJECT_PRINT)
// This method is only meant to be called from gdb for debugging purposes.
// Since the string can also be in two-byte encoding, non-Latin1 characters
// will be ignored in the output.
char* String::ToAsciiArray() {
// Static so that subsequent calls frees previously allocated space.
// This also means that previous results will be overwritten.
static char* buffer = nullptr;
if (buffer != nullptr) delete[] buffer;
buffer = new char[length() + 1];
WriteToFlat(*this, reinterpret_cast<uint8_t*>(buffer), 0, length());
buffer[length()] = 0;
return buffer;
}
// static
void TransitionsAccessor::PrintOneTransition(std::ostream& os, Name key,
Map target) {
os << "\n ";
#ifdef OBJECT_PRINT
key->NamePrint(os);
#else
key->ShortPrint(os);
#endif
os << ": ";
ReadOnlyRoots roots = key->GetReadOnlyRoots();
if (key == roots.nonextensible_symbol()) {
os << "(transition to non-extensible)";
} else if (key == roots.sealed_symbol()) {
os << "(transition to sealed)";
} else if (key == roots.frozen_symbol()) {
os << "(transition to frozen)";
} else if (key == roots.elements_transition_symbol()) {
os << "(transition to " << ElementsKindToString(target->elements_kind())
<< ")";
} else if (key == roots.strict_function_transition_symbol()) {
os << " (transition to strict function)";
} else {
DCHECK(!IsSpecialTransition(roots, key));
os << "(transition to ";
int descriptor = target->LastAdded();
DescriptorArray descriptors = target->instance_descriptors();
descriptors->PrintDescriptorDetails(os, descriptor,
PropertyDetails::kForTransitions);
os << ")";
}
os << " -> " << Brief(target);
}
void TransitionArray::PrintInternal(std::ostream& os) {
int num_transitions = number_of_transitions();
os << "Transition array #" << num_transitions << ":";
for (int i = 0; i < num_transitions; i++) {
Name key = GetKey(i);
Map target = GetTarget(i);
TransitionsAccessor::PrintOneTransition(os, key, target);
}
os << "\n" << std::flush;
}
void TransitionsAccessor::PrintTransitions(std::ostream& os) { // NOLINT
switch (encoding()) {
case kPrototypeInfo:
case kUninitialized:
case kMigrationTarget:
return;
case kWeakRef: {
Map target = Map::cast(raw_transitions_->GetHeapObjectAssumeWeak());
Name key = GetSimpleTransitionKey(target);
PrintOneTransition(os, key, target);
break;
}
case kFullTransitionArray:
return transitions()->PrintInternal(os);
}
}
void TransitionsAccessor::PrintTransitionTree() {
StdoutStream os;
os << "map= " << Brief(map_);
DisallowHeapAllocation no_gc;
PrintTransitionTree(os, 0, &no_gc);
os << "\n" << std::flush;
}
void TransitionsAccessor::PrintTransitionTree(std::ostream& os, int level,
DisallowHeapAllocation* no_gc) {
ReadOnlyRoots roots = ReadOnlyRoots(isolate_);
int num_transitions = NumberOfTransitions();
if (num_transitions == 0) return;
for (int i = 0; i < num_transitions; i++) {
Name key = GetKey(i);
Map target = GetTarget(i);
os << std::endl
<< " " << level << "/" << i << ":" << std::setw(level * 2 + 2) << " ";
std::stringstream ss;
ss << Brief(target);
os << std::left << std::setw(50) << ss.str() << ": ";
if (key == roots.nonextensible_symbol()) {
os << "to non-extensible";
} else if (key == roots.sealed_symbol()) {
os << "to sealed ";
} else if (key == roots.frozen_symbol()) {
os << "to frozen";
} else if (key == roots.elements_transition_symbol()) {
os << "to " << ElementsKindToString(target->elements_kind());
} else if (key == roots.strict_function_transition_symbol()) {
os << "to strict function";
} else {
#ifdef OBJECT_PRINT
key->NamePrint(os);
#else
key->ShortPrint(os);
#endif
os << " ";
DCHECK(!IsSpecialTransition(ReadOnlyRoots(isolate_), key));
os << "to ";
int descriptor = target->LastAdded();
DescriptorArray descriptors = target->instance_descriptors();
descriptors->PrintDescriptorDetails(os, descriptor,
PropertyDetails::kForTransitions);
}
TransitionsAccessor transitions(isolate_, target, no_gc);
transitions.PrintTransitionTree(os, level + 1, no_gc);
}
}
void JSObject::PrintTransitions(std::ostream& os) { // NOLINT
DisallowHeapAllocation no_gc;
TransitionsAccessor ta(GetIsolate(), map(), &no_gc);
if (ta.NumberOfTransitions() == 0) return;
os << "\n - transitions";
ta.PrintTransitions(os);
}
#endif // defined(DEBUG) || defined(OBJECT_PRINT)
} // namespace internal
} // namespace v8
//
// The following functions are used by our gdb macros.
//
V8_EXPORT_PRIVATE extern void _v8_internal_Print_Object(void* object) {
reinterpret_cast<i::Object*>(object)->Print();
}
V8_EXPORT_PRIVATE extern void _v8_internal_Print_Code(void* object) {
i::Address address = reinterpret_cast<i::Address>(object);
i::Isolate* isolate = i::Isolate::Current();
i::wasm::WasmCode* wasm_code =
isolate->wasm_engine()->code_manager()->LookupCode(address);
if (wasm_code) {
i::StdoutStream os;
wasm_code->Disassemble(nullptr, os, address);
return;
}
if (!isolate->heap()->InSpaceSlow(address, i::CODE_SPACE) &&
!isolate->heap()->InSpaceSlow(address, i::LO_SPACE) &&
!i::InstructionStream::PcIsOffHeap(isolate, address)) {
i::PrintF(
"%p is not within the current isolate's large object, code or embedded "
"spaces\n",
object);
return;
}
i::Code code = isolate->FindCodeObject(address);
if (!code->IsCode()) {
i::PrintF("No code object found containing %p\n", object);
return;
}
#ifdef ENABLE_DISASSEMBLER
i::StdoutStream os;
code->Disassemble(nullptr, os, address);
#else // ENABLE_DISASSEMBLER
code->Print();
#endif // ENABLE_DISASSEMBLER
}
V8_EXPORT_PRIVATE extern void _v8_internal_Print_LayoutDescriptor(
void* object) {
i::Object* o = reinterpret_cast<i::Object*>(object);
if (!o->IsLayoutDescriptor()) {
printf("Please provide a layout descriptor\n");
} else {
i::LayoutDescriptor::cast(o)->Print();
}
}
V8_EXPORT_PRIVATE extern void _v8_internal_Print_StackTrace() {
i::Isolate* isolate = i::Isolate::Current();
isolate->PrintStack(stdout);
}
V8_EXPORT_PRIVATE extern void _v8_internal_Print_TransitionTree(void* object) {
i::Object* o = reinterpret_cast<i::Object*>(object);
if (!o->IsMap()) {
printf("Please provide a valid Map\n");
} else {
#if defined(DEBUG) || defined(OBJECT_PRINT)
i::DisallowHeapAllocation no_gc;
i::Map map = i::Map::unchecked_cast(o);
i::TransitionsAccessor transitions(i::Isolate::Current(), map, &no_gc);
transitions.PrintTransitionTree();
#endif
}
}