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v8/src/objects-printer.cc
ishell 9dd638fe70 Minor fixes in objects printer. 
BUG=

Review-Url: https://codereview.chromium.org/2468433002
Cr-Commit-Position: refs/heads/master@{#40674}
2016-10-31 15:16:51 +00:00

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// 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/disasm.h"
#include "src/disassembler.h"
#include "src/interpreter/bytecodes.h"
#include "src/objects-inl.h"
#include "src/ostreams.h"
#include "src/regexp/jsregexp.h"
namespace v8 {
namespace internal {
#ifdef OBJECT_PRINT
void Object::Print() {
OFStream os(stdout);
this->Print(os);
os << std::flush;
}
void Object::Print(std::ostream& os) { // NOLINT
if (IsSmi()) {
os << "Smi: " << std::hex << "0x" << Smi::cast(this)->value();
os << std::dec << " (" << Smi::cast(this)->value() << ")\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 << "]";
}
void HeapObject::HeapObjectPrint(std::ostream& os) { // NOLINT
InstanceType instance_type = map()->instance_type();
HandleScope scope(GetIsolate());
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 ";
HeapNumber::cast(this)->HeapNumberPrint(os);
os << ">\n";
break;
case SIMD128_VALUE_TYPE:
Simd128Value::cast(this)->Simd128ValuePrint(os);
break;
case FIXED_DOUBLE_ARRAY_TYPE:
FixedDoubleArray::cast(this)->FixedDoubleArrayPrint(os);
break;
case FIXED_ARRAY_TYPE:
FixedArray::cast(this)->FixedArrayPrint(os);
break;
case BYTE_ARRAY_TYPE:
ByteArray::cast(this)->ByteArrayPrint(os);
break;
case BYTECODE_ARRAY_TYPE:
BytecodeArray::cast(this)->BytecodeArrayPrint(os);
break;
case TRANSITION_ARRAY_TYPE:
TransitionArray::cast(this)->TransitionArrayPrint(os);
break;
case FREE_SPACE_TYPE:
FreeSpace::cast(this)->FreeSpacePrint(os);
break;
#define PRINT_FIXED_TYPED_ARRAY(Type, type, TYPE, ctype, size) \
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_GENERATOR_OBJECT_TYPE:
case JS_PROMISE_TYPE:
case JS_ARGUMENTS_TYPE:
case JS_ERROR_TYPE:
JSObject::cast(this)->JSObjectPrint(os);
break;
case JS_ARRAY_TYPE:
JSArray::cast(this)->JSArrayPrint(os);
break;
case JS_REGEXP_TYPE:
JSRegExp::cast(this)->JSRegExpPrint(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 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_ITERATOR_TYPE:
JSSetIterator::cast(this)->JSSetIteratorPrint(os);
break;
case JS_MAP_ITERATOR_TYPE:
JSMapIterator::cast(this)->JSMapIteratorPrint(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 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 WEAK_CELL_TYPE:
WeakCell::cast(this)->WeakCellPrint(os);
break;
case JS_ARRAY_BUFFER_TYPE:
JSArrayBuffer::cast(this)->JSArrayBufferPrint(os);
break;
case JS_TYPED_ARRAY_TYPE:
JSTypedArray::cast(this)->JSTypedArrayPrint(os);
break;
case JS_FIXED_ARRAY_ITERATOR_TYPE:
JSFixedArrayIterator::cast(this)->JSFixedArrayIteratorPrint(os);
break;
case JS_DATA_VIEW_TYPE:
JSDataView::cast(this)->JSDataViewPrint(os);
break;
#define MAKE_STRUCT_CASE(NAME, Name, name) \
case NAME##_TYPE: \
Name::cast(this)->Name##Print(os); \
break;
STRUCT_LIST(MAKE_STRUCT_CASE)
#undef MAKE_STRUCT_CASE
default:
os << "UNKNOWN TYPE " << map()->instance_type();
UNREACHABLE();
break;
}
}
void Simd128Value::Simd128ValuePrint(std::ostream& os) { // NOLINT
#define PRINT_SIMD128_VALUE(TYPE, Type, type, lane_count, lane_type) \
if (Is##Type()) return Type::cast(this)->Type##Print(os);
SIMD128_TYPES(PRINT_SIMD128_VALUE)
#undef PRINT_SIMD128_VALUE
UNREACHABLE();
}
void Float32x4::Float32x4Print(std::ostream& os) { // NOLINT
char arr[100];
Vector<char> buffer(arr, arraysize(arr));
os << std::string(DoubleToCString(get_lane(0), buffer)) << ", "
<< std::string(DoubleToCString(get_lane(1), buffer)) << ", "
<< std::string(DoubleToCString(get_lane(2), buffer)) << ", "
<< std::string(DoubleToCString(get_lane(3), buffer));
}
#define SIMD128_INT_PRINT_FUNCTION(type, lane_count) \
void type::type##Print(std::ostream& os) { \
char arr[100]; \
Vector<char> buffer(arr, arraysize(arr)); \
os << std::string(IntToCString(get_lane(0), buffer)); \
for (int i = 1; i < lane_count; i++) { \
os << ", " << std::string(IntToCString(get_lane(i), buffer)); \
} \
}
SIMD128_INT_PRINT_FUNCTION(Int32x4, 4)
SIMD128_INT_PRINT_FUNCTION(Uint32x4, 4)
SIMD128_INT_PRINT_FUNCTION(Int16x8, 8)
SIMD128_INT_PRINT_FUNCTION(Uint16x8, 8)
SIMD128_INT_PRINT_FUNCTION(Int8x16, 16)
SIMD128_INT_PRINT_FUNCTION(Uint8x16, 16)
#undef SIMD128_INT_PRINT_FUNCTION
#define SIMD128_BOOL_PRINT_FUNCTION(type, lane_count) \
void type::type##Print(std::ostream& os) { \
char arr[100]; \
Vector<char> buffer(arr, arraysize(arr)); \
os << std::string(get_lane(0) ? "true" : "false"); \
for (int i = 1; i < lane_count; i++) { \
os << ", " << std::string(get_lane(i) ? "true" : "false"); \
} \
}
SIMD128_BOOL_PRINT_FUNCTION(Bool32x4, 4)
SIMD128_BOOL_PRINT_FUNCTION(Bool16x8, 8)
SIMD128_BOOL_PRINT_FUNCTION(Bool8x16, 16)
#undef SIMD128_BOOL_PRINT_FUNCTION
void ByteArray::ByteArrayPrint(std::ostream& os) { // NOLINT
os << "byte array, data starts at " << GetDataStartAddress();
}
void BytecodeArray::BytecodeArrayPrint(std::ostream& os) { // NOLINT
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();
}
void JSObject::PrintProperties(std::ostream& os) { // NOLINT
if (HasFastProperties()) {
DescriptorArray* descs = map()->instance_descriptors();
for (int i = 0; i < map()->NumberOfOwnDescriptors(); i++) {
os << "\n ";
descs->GetKey(i)->NamePrint(os);
os << ": ";
switch (descs->GetType(i)) {
case DATA: {
FieldIndex index = FieldIndex::ForDescriptor(map(), i);
if (IsUnboxedDoubleField(index)) {
os << "<unboxed double> " << RawFastDoublePropertyAt(index);
} else {
os << Brief(RawFastPropertyAt(index));
}
os << " (data field at offset " << index.property_index() << ")";
break;
}
case ACCESSOR: {
FieldIndex index = FieldIndex::ForDescriptor(map(), i);
os << " (accessor field at offset " << index.property_index() << ")";
break;
}
case DATA_CONSTANT:
os << Brief(descs->GetConstant(i)) << " (data constant)";
break;
case ACCESSOR_CONSTANT:
os << Brief(descs->GetCallbacksObject(i)) << " (accessor constant)";
break;
}
}
} else if (IsJSGlobalObject()) {
global_dictionary()->Print(os);
} else {
property_dictionary()->Print(os);
}
}
namespace {
template <class T>
double GetScalarElement(T* array, int index) {
return array->get_scalar(index);
}
double GetScalarElement(FixedDoubleArray* array, int index) {
if (array->is_the_hole(index)) return bit_cast<double>(kHoleNanInt64);
return array->get_scalar(index);
}
bool is_the_hole(double maybe_hole) {
return bit_cast<uint64_t>(maybe_hole) == kHoleNanInt64;
}
} // namespace
template <class T, bool print_the_hole>
static void DoPrintElements(std::ostream& os, Object* object) { // NOLINT
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) &&
is_the_hole(previous_value) == is_the_hole(value)) {
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 && is_the_hole(previous_value)) {
os << "<the_hole>";
} else {
os << previous_value;
}
previous_index = i;
previous_value = value;
}
}
void JSObject::PrintElements(std::ostream& os) { // NOLINT
// Don't call GetElementsKind, its validation code can cause the printer to
// fail when debugging.
if (elements()->length() == 0) return;
switch (map()->elements_kind()) {
case FAST_HOLEY_SMI_ELEMENTS:
case FAST_SMI_ELEMENTS:
case FAST_HOLEY_ELEMENTS:
case FAST_ELEMENTS:
case FAST_STRING_WRAPPER_ELEMENTS: {
// Print in array notation for non-sparse arrays.
FixedArray* array = FixedArray::cast(elements());
Object* previous_value = array->get(0);
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;
}
break;
}
case FAST_HOLEY_DOUBLE_ELEMENTS:
case FAST_DOUBLE_ELEMENTS: {
DoPrintElements<FixedDoubleArray, true>(os, elements());
break;
}
#define PRINT_ELEMENTS(Type, type, TYPE, elementType, size) \
case TYPE##_ELEMENTS: { \
DoPrintElements<Fixed##Type##Array, false>(os, elements()); \
break; \
}
TYPED_ARRAYS(PRINT_ELEMENTS)
#undef PRINT_ELEMENTS
case DICTIONARY_ELEMENTS:
case SLOW_STRING_WRAPPER_ELEMENTS:
SeededNumberDictionary::cast(elements())->Print(os);
break;
case FAST_SLOPPY_ARGUMENTS_ELEMENTS:
case SLOW_SLOPPY_ARGUMENTS_ELEMENTS: {
FixedArray* p = FixedArray::cast(elements());
os << "\n parameter map:";
for (int i = 2; i < p->length(); i++) {
os << " " << (i - 2) << ":" << Brief(p->get(i));
}
os << "\n context: " << Brief(p->get(0))
<< "\n arguments: " << Brief(p->get(1));
break;
}
case NO_ELEMENTS:
break;
}
}
static void JSObjectPrintHeader(std::ostream& os, JSObject* obj,
const char* id) { // NOLINT
obj->PrintHeader(os, id);
// Don't call GetElementsKind, its validation code can cause the printer to
// fail when debugging.
os << "\n - map = " << reinterpret_cast<void*>(obj->map()) << " [";
if (obj->HasFastProperties()) {
os << "FastProperties";
} else {
os << "DictionaryProperties";
}
PrototypeIterator iter(obj->GetIsolate(), obj);
os << "]\n - prototype = " << reinterpret_cast<void*>(iter.GetCurrent());
os << "\n - elements = " << Brief(obj->elements()) << " ["
<< ElementsKindToString(obj->map()->elements_kind());
if (obj->elements()->map() == obj->GetHeap()->fixed_cow_array_map()) {
os << " (COW)";
}
os << "]";
if (obj->GetInternalFieldCount() > 0) {
os << "\n - internal fields: " << obj->GetInternalFieldCount();
}
}
static void JSObjectPrintBody(std::ostream& os, JSObject* obj, // NOLINT
bool print_elements = true) {
os << "\n - properties = {";
obj->PrintProperties(os);
os << "\n }\n";
if (print_elements && obj->elements()->length() > 0) {
os << " - elements = {";
obj->PrintElements(os);
os << "\n }\n";
}
int internal_fields = obj->GetInternalFieldCount();
if (internal_fields > 0) {
os << " - internal fields = {";
for (int i = 0; i < internal_fields; i++) {
os << "\n " << Brief(obj->GetInternalField(i));
}
os << "\n }\n";
}
}
void JSObject::JSObjectPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, nullptr);
JSObjectPrintBody(os, this);
}
void JSArray::JSArrayPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, "JSArray");
os << "\n - length = " << Brief(this->length());
JSObjectPrintBody(os, this);
}
void JSRegExp::JSRegExpPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, "JSRegExp");
os << "\n - data = " << Brief(data());
JSObjectPrintBody(os, this);
}
void Symbol::SymbolPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Symbol");
os << "\n - hash: " << Hash();
os << "\n - name: " << Brief(name());
if (name()->IsUndefined(GetIsolate())) {
os << " (" << PrivateSymbolToName() << ")";
}
os << "\n - private: " << is_private();
os << "\n";
}
void Map::MapPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Map");
os << "\n - type: " << instance_type();
os << "\n - instance size: " << instance_size();
if (IsJSObjectMap()) {
os << "\n - inobject properties: " << GetInObjectProperties();
}
os << "\n - elements kind: " << ElementsKindToString(elements_kind());
os << "\n - unused property fields: " << unused_property_fields();
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_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 (is_undetectable()) os << "\n - undetectable";
if (is_callable()) os << "\n - callable";
if (is_constructor()) os << "\n - constructor";
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 - instance descriptors " << (owns_descriptors() ? "(own) " : "")
<< "#" << NumberOfOwnDescriptors() << ": "
<< Brief(instance_descriptors());
if (FLAG_unbox_double_fields) {
os << "\n - layout descriptor: " << Brief(layout_descriptor());
}
int nof_transitions = TransitionArray::NumberOfTransitions(raw_transitions());
if (nof_transitions > 0) {
os << "\n - transitions #" << nof_transitions << ": "
<< Brief(raw_transitions());
TransitionArray::PrintTransitions(os, raw_transitions(), false);
}
os << "\n - prototype: " << Brief(prototype());
os << "\n - constructor: " << Brief(GetConstructor());
os << "\n - code cache: " << Brief(code_cache());
os << "\n - dependent code: " << Brief(dependent_code());
os << "\n - construction counter: " << construction_counter();
os << "\n";
}
void TypeFeedbackInfo::TypeFeedbackInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "TypeFeedbackInfo");
os << "\n - ic_total_count: " << ic_total_count()
<< ", ic_with_type_info_count: " << ic_with_type_info_count()
<< ", ic_generic_count: " << ic_generic_count() << "\n";
}
void AliasedArgumentsEntry::AliasedArgumentsEntryPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AliasedArgumentsEntry");
os << "\n - aliased_context_slot: " << aliased_context_slot();
}
void FixedArray::FixedArrayPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "FixedArray");
os << "\n - length: " << length();
for (int i = 0; i < length(); i++) {
os << "\n [" << i << "]: " << Brief(get(i));
}
os << "\n";
}
void FixedDoubleArray::FixedDoubleArrayPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "FixedDoubleArray");
os << "\n - length: " << length();
for (int i = 0; i < length(); i++) {
os << "\n [" << i << "]: ";
if (is_the_hole(i)) {
os << "<the hole>";
} else {
os << get_scalar(i);
}
}
os << "\n";
}
void TransitionArray::TransitionArrayPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "TransitionArray");
os << "\n - capacity: " << length();
for (int i = 0; i < length(); i++) {
os << "\n [" << i << "]: " << Brief(get(i));
if (i == kNextLinkIndex) os << " (next link)";
if (i == kPrototypeTransitionsIndex) os << " (prototype transitions)";
if (i == kTransitionLengthIndex) os << " (number of transitions)";
}
os << "\n";
}
template void FeedbackVectorSpecBase<StaticFeedbackVectorSpec>::Print();
template void FeedbackVectorSpecBase<FeedbackVectorSpec>::Print();
template <typename Derived>
void FeedbackVectorSpecBase<Derived>::Print() {
OFStream os(stdout);
FeedbackVectorSpecPrint(os);
os << std::flush;
}
template <typename Derived>
void FeedbackVectorSpecBase<Derived>::FeedbackVectorSpecPrint(
std::ostream& os) { // NOLINT
int slot_count = This()->slots();
os << " - slot_count: " << slot_count;
if (slot_count == 0) {
os << " (empty)\n";
return;
}
for (int slot = 0, name_index = 0; slot < slot_count;) {
FeedbackVectorSlotKind kind = This()->GetKind(slot);
int entry_size = TypeFeedbackMetadata::GetSlotSize(kind);
DCHECK_LT(0, entry_size);
os << "\n Slot #" << slot << " " << kind;
if (TypeFeedbackMetadata::SlotRequiresName(kind)) {
os << ", " << Brief(*This()->GetName(name_index++));
}
slot += entry_size;
}
os << "\n";
}
void TypeFeedbackMetadata::Print() {
OFStream os(stdout);
TypeFeedbackMetadataPrint(os);
os << std::flush;
}
void TypeFeedbackMetadata::TypeFeedbackMetadataPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "TypeFeedbackMetadata");
os << "\n - length: " << length();
if (length() == 0) {
os << " (empty)\n";
return;
}
os << "\n - slot_count: " << slot_count();
TypeFeedbackMetadataIterator iter(this);
while (iter.HasNext()) {
FeedbackVectorSlot slot = iter.Next();
FeedbackVectorSlotKind kind = iter.kind();
os << "\n Slot " << slot << " " << kind;
if (TypeFeedbackMetadata::SlotRequiresName(kind)) {
os << ", " << Brief(iter.name());
}
}
os << "\n";
}
void TypeFeedbackVector::Print() {
OFStream os(stdout);
TypeFeedbackVectorPrint(os);
os << std::flush;
}
void TypeFeedbackVector::TypeFeedbackVectorPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "TypeFeedbackVector");
os << "\n - length: " << length();
if (length() == 0) {
os << " (empty)\n";
return;
}
TypeFeedbackMetadataIterator iter(metadata());
while (iter.HasNext()) {
FeedbackVectorSlot slot = iter.Next();
FeedbackVectorSlotKind kind = iter.kind();
os << "\n Slot " << slot << " " << kind;
if (TypeFeedbackMetadata::SlotRequiresName(kind)) {
os << ", " << Brief(iter.name());
}
os << " ";
switch (kind) {
case FeedbackVectorSlotKind::LOAD_IC: {
LoadICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::LOAD_GLOBAL_IC: {
LoadGlobalICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::KEYED_LOAD_IC: {
KeyedLoadICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::CALL_IC: {
CallICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::STORE_IC: {
StoreICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::KEYED_STORE_IC: {
KeyedStoreICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::INTERPRETER_BINARYOP_IC: {
BinaryOpICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::INTERPRETER_COMPARE_IC: {
CompareICNexus nexus(this, slot);
os << Code::ICState2String(nexus.StateFromFeedback());
break;
}
case FeedbackVectorSlotKind::GENERAL:
break;
case FeedbackVectorSlotKind::INVALID:
case FeedbackVectorSlotKind::KINDS_NUMBER:
UNREACHABLE();
break;
}
int entry_size = iter.entry_size();
for (int i = 0; i < entry_size; i++) {
int index = GetIndex(slot) + i;
os << "\n [" << index << "]: " << Brief(get(index));
}
}
os << "\n";
}
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: " << 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 (StringShape(this).IsInternalized()) {
os << "#";
} else if (StringShape(this).IsCons()) {
os << "c\"";
} 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::cast(weekday())->value() + 1 : 0],
year()->IsSmi() ? Smi::cast(year())->value() : -1,
month()->IsSmi() ? Smi::cast(month())->value() : -1,
day()->IsSmi() ? Smi::cast(day())->value() : -1,
hour()->IsSmi() ? Smi::cast(hour())->value() : -1,
min()->IsSmi() ? Smi::cast(min())->value() : -1,
sec()->IsSmi() ? Smi::cast(sec())->value() : -1);
os << buf.start();
}
JSObjectPrintBody(os, this);
}
void JSProxy::JSProxyPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "JSProxy");
os << "\n - map = " << reinterpret_cast<void*>(map());
os << "\n - target = ";
target()->ShortPrint(os);
os << "\n - handler = ";
handler()->ShortPrint(os);
os << "\n - hash = ";
hash()->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);
}
template <class Derived, class TableType>
void
OrderedHashTableIterator<Derived, TableType>::OrderedHashTableIteratorPrint(
std::ostream& os) { // NOLINT
os << "\n - table = " << Brief(table());
os << "\n - index = " << Brief(index());
os << "\n - kind = " << Brief(kind());
os << "\n";
}
template void OrderedHashTableIterator<
JSSetIterator,
OrderedHashSet>::OrderedHashTableIteratorPrint(std::ostream& os); // NOLINT
template void OrderedHashTableIterator<
JSMapIterator,
OrderedHashMap>::OrderedHashTableIteratorPrint(std::ostream& os); // NOLINT
void JSSetIterator::JSSetIteratorPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, "JSSetIterator");
OrderedHashTableIteratorPrint(os);
}
void JSMapIterator::JSMapIteratorPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, "JSMapIterator");
OrderedHashTableIteratorPrint(os);
}
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 = " << Brief(byte_length());
if (was_neutered()) os << "\n - neutered";
JSObjectPrintBody(os, this, !was_neutered());
}
void JSTypedArray::JSTypedArrayPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, "JSTypedArray");
os << "\n - buffer = " << Brief(buffer());
os << "\n - byte_offset = " << Brief(byte_offset());
os << "\n - byte_length = " << Brief(byte_length());
os << "\n - length = " << Brief(length());
if (WasNeutered()) os << "\n - neutered";
JSObjectPrintBody(os, this, !WasNeutered());
}
void JSFixedArrayIterator::JSFixedArrayIteratorPrint(
std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, "JSFixedArrayIterator");
os << "\n - array = " << Brief(array());
os << "\n - index = " << index();
os << "\n - initial_next = " << Brief(initial_next());
JSObjectPrintBody(os, this);
}
void JSDataView::JSDataViewPrint(std::ostream& os) { // NOLINT
JSObjectPrintHeader(os, this, "JSDataView");
os << "\n - buffer =" << Brief(buffer());
os << "\n - byte_offset = " << Brief(byte_offset());
os << "\n - byte_length = " << Brief(byte_length());
if (WasNeutered()) os << "\n - neutered";
JSObjectPrintBody(os, this, !WasNeutered());
}
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
JSObjectPrintHeader(os, this, "Function");
os << "\n - initial_map = ";
if (has_initial_map()) os << Brief(initial_map());
os << "\n - shared_info = " << Brief(shared());
os << "\n - name = " << Brief(shared()->name());
os << "\n - formal_parameter_count = "
<< shared()->internal_formal_parameter_count();
if (IsGeneratorFunction(shared()->kind())) {
os << "\n - generator";
} else if (IsAsyncFunction(shared()->kind())) {
os << "\n - async";
}
os << "\n - context = " << Brief(context());
os << "\n - literals = " << Brief(literals());
os << "\n - code = " << Brief(code());
JSObjectPrintBody(os, this);
}
void SharedFunctionInfo::SharedFunctionInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "SharedFunctionInfo");
os << "\n - name = " << Brief(name());
os << "\n - formal_parameter_count = " << internal_formal_parameter_count();
os << "\n - expected_nof_properties = " << expected_nof_properties();
os << "\n - ast_node_count = " << ast_node_count();
os << "\n - instance class name = ";
instance_class_name()->Print(os);
os << "\n - code = " << Brief(code());
if (HasSourceCode()) {
os << "\n - source code = ";
String* source = String::cast(Script::cast(script())->source());
int start = start_position();
int length = end_position() - start;
std::unique_ptr<char[]> source_string = source->ToCString(
DISALLOW_NULLS, FAST_STRING_TRAVERSAL, start, length, NULL);
os << source_string.get();
}
// 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 = " << start_position();
os << "\n - end position = " << end_position();
os << "\n - debug info = " << Brief(debug_info());
os << "\n - length = " << length();
os << "\n - num_literals = " << num_literals();
os << "\n - optimized_code_map = " << Brief(optimized_code_map());
os << "\n - feedback_metadata = ";
feedback_metadata()->TypeFeedbackMetadataPrint(os);
if (HasBytecodeArray()) {
os << "\n - bytecode_array = " << bytecode_array();
}
os << "\n";
}
void JSGlobalProxy::JSGlobalProxyPrint(std::ostream& os) { // NOLINT
os << "global_proxy ";
JSObjectPrint(os);
os << "native context : " << Brief(native_context());
os << "\n";
}
void JSGlobalObject::JSGlobalObjectPrint(std::ostream& os) { // NOLINT
os << "global ";
JSObjectPrint(os);
os << "native context : " << Brief(native_context());
os << "\n";
}
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 - value: " << Brief(value());
os << "\n - details: " << property_details();
PropertyCellType cell_type = property_details().cell_type();
os << "\n - cell_type: ";
if (value()->IsTheHole(GetIsolate())) {
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 WeakCell::WeakCellPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "WeakCell");
if (cleared()) {
os << "\n - cleared";
} else {
os << "\n - value: " << Brief(value());
}
os << "\n";
}
void Code::CodePrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Code");
os << "\n";
#ifdef ENABLE_DISASSEMBLER
if (FLAG_use_verbose_printer) {
Disassemble(NULL, os);
}
#endif
}
void Foreign::ForeignPrint(std::ostream& os) { // NOLINT
os << "foreign address : " << foreign_address();
os << "\n";
}
void AccessorInfo::AccessorInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AccessorInfo");
os << "\n - name: " << Brief(name());
os << "\n - flag: " << flag();
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 Box::BoxPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Box");
os << "\n - value: " << Brief(value());
os << "\n";
}
void PromiseResolveThenableJobInfo::PromiseResolveThenableJobInfoPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PromiseResolveThenableJobInfo");
os << "\n - thenable: " << Brief(thenable());
os << "\n - then: " << Brief(then());
os << "\n - resolve: " << Brief(resolve());
os << "\n - reject: " << Brief(reject());
os << "\n - debug id: " << Brief(debug_id());
os << "\n - debug name: " << Brief(debug_name());
os << "\n";
}
void PromiseReactionJobInfo::PromiseReactionJobInfoPrint(
std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PromiseReactionJobInfo");
os << "\n - value: " << Brief(value());
os << "\n - tasks: " << Brief(tasks());
os << "\n - deferred: " << Brief(deferred());
os << "\n - debug id: " << Brief(debug_id());
os << "\n - debug name: " << Brief(debug_name());
os << "\n - reaction context: " << Brief(context());
os << "\n";
}
void Module::ModulePrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "Module");
os << "\n - code: " << Brief(code());
os << "\n - exports: " << Brief(exports());
os << "\n - requested_modules: " << Brief(requested_modules());
os << "\n - evaluated: " << evaluated();
os << "\n";
}
void JSModuleNamespace::JSModuleNamespacePrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "JSModuleNamespace");
os << "\n - module: " << Brief(module());
os << "\n";
}
void PrototypeInfo::PrototypeInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "PrototypeInfo");
os << "\n - weak cell: " << Brief(weak_cell());
os << "\n - prototype users: " << Brief(prototype_users());
os << "\n - registry slot: " << registry_slot();
os << "\n - validity cell: " << Brief(validity_cell());
os << "\n - object create map: " << Brief(object_create_map());
os << "\n";
}
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 ContextExtension::ContextExtensionPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "ContextExtension");
os << "\n - scope_info: " << Brief(scope_info());
os << "\n - extension: " << Brief(extension());
os << "\n";
}
void AccessorPair::AccessorPairPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AccessorPair");
os << "\n - getter: " << Brief(getter());
os << "\n - setter: " << Brief(setter());
os << "\n";
}
void AccessCheckInfo::AccessCheckInfoPrint(std::ostream& os) { // NOLINT
HeapObject::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 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 CallHandlerInfo::CallHandlerInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "CallHandlerInfo");
os << "\n - callback: " << Brief(callback());
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 - prototype_template: " << Brief(prototype_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 - signature: " << Brief(signature());
os << "\n - access_check_info: " << Brief(access_check_info());
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";
}
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 - internal_field_count: " << internal_field_count();
os << "\n - immutable_proto: " << (immutable_proto() ? "true" : "false");
os << "\n";
}
void AllocationSite::AllocationSitePrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AllocationSite");
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 (transition_info()->IsSmi()) {
ElementsKind kind = GetElementsKind();
os << "Array allocation with ElementsKind " << ElementsKindToString(kind);
} else if (transition_info()->IsJSArray()) {
os << "Array literal " << Brief(transition_info());
} else {
os << "unknown transition_info" << Brief(transition_info());
}
os << "\n";
}
void AllocationMemento::AllocationMementoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "AllocationMemento");
os << "\n - allocation site: ";
if (IsValid()) {
GetAllocationSite()->Print(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 - wrapper: " << Brief(wrapper());
os << "\n - compilation type: " << compilation_type();
os << "\n - line ends: " << Brief(line_ends());
os << "\n - eval from shared: " << Brief(eval_from_shared());
os << "\n - eval from position: " << eval_from_position();
os << "\n - shared function infos: " << Brief(shared_function_infos());
os << "\n";
}
void DebugInfo::DebugInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "DebugInfo");
os << "\n - shared: " << Brief(shared());
os << "\n - debug bytecode array: " << Brief(debug_bytecode_array());
os << "\n - break_points: ";
break_points()->Print(os);
}
void BreakPointInfo::BreakPointInfoPrint(std::ostream& os) { // NOLINT
HeapObject::PrintHeader(os, "BreakPointInfo");
os << "\n - source_position: " << source_position();
os << "\n - break_point_objects: " << Brief(break_point_objects());
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() {
OFStream os(stdout);
this->Print(os);
os << std::flush;
}
void LayoutDescriptor::Print(std::ostream& os) { // NOLINT
os << "Layout descriptor: ";
if (IsOddball() && IsUninitialized(HeapObject::cast(this)->GetIsolate())) {
os << "<uninitialized>";
} else if (IsFastPointerLayout()) {
os << "<all tagged>";
} else if (IsSmi()) {
os << "fast";
PrintBitMask(os, static_cast<uint32_t>(Smi::cast(this)->value()));
} else {
os << "slow";
int len = length();
for (int i = 0; i < len; i++) {
if (i > 0) os << " |";
PrintBitMask(os, get_scalar(i));
}
}
os << "\n";
}
#endif // OBJECT_PRINT
#if TRACE_MAPS
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(GetIsolate())) {
PrintF("#<%s>", s->PrivateSymbolToName());
} else {
PrintF("<%s>", String::cast(s->name())->ToCString().get());
}
}
}
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(GetIsolate())) {
return SNPrintF(str, "#<%s>", s->PrivateSymbolToName());
} else {
return SNPrintF(str, "<%s>", String::cast(s->name())->ToCString().get());
}
}
}
#endif // TRACE_MAPS
#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 = NULL;
if (buffer != NULL) delete[] buffer;
buffer = new char[length() + 1];
WriteToFlat(this, reinterpret_cast<uint8_t*>(buffer), 0, length());
buffer[length()] = 0;
return buffer;
}
void DescriptorArray::Print() {
OFStream os(stdout);
this->PrintDescriptors(os);
os << std::flush;
}
void DescriptorArray::PrintDescriptors(std::ostream& os) { // NOLINT
HandleScope scope(GetIsolate());
os << "Descriptor array #" << number_of_descriptors();
for (int i = 0; i < number_of_descriptors(); i++) {
Descriptor desc;
Get(i, &desc);
os << "\n " << i << ": " << desc;
}
os << "\n";
}
void TransitionArray::Print() {
OFStream os(stdout);
TransitionArray::PrintTransitions(os, this);
os << "\n" << std::flush;
}
void TransitionArray::PrintTransitions(std::ostream& os, Object* transitions,
bool print_header) { // NOLINT
int num_transitions = NumberOfTransitions(transitions);
if (print_header) {
os << "Transition array #" << num_transitions << ":";
}
for (int i = 0; i < num_transitions; i++) {
Name* key = GetKey(transitions, i);
Map* target = GetTarget(transitions, i);
os << "\n ";
#ifdef OBJECT_PRINT
key->NamePrint(os);
#else
key->ShortPrint(os);
#endif
os << ": ";
Heap* heap = key->GetHeap();
if (key == heap->nonextensible_symbol()) {
os << "(transition to non-extensible)";
} else if (key == heap->sealed_symbol()) {
os << "(transition to sealed)";
} else if (key == heap->frozen_symbol()) {
os << "(transition to frozen)";
} else if (key == heap->elements_transition_symbol()) {
os << "(transition to " << ElementsKindToString(target->elements_kind())
<< ")";
} else if (key == heap->strict_function_transition_symbol()) {
os << " (transition to strict function)";
} else {
PropertyDetails details = GetTargetDetails(key, target);
os << "(transition to ";
if (details.location() == kDescriptor) {
os << "immutable ";
}
os << (details.kind() == kData ? "data" : "accessor");
if (details.location() == kDescriptor) {
Object* value =
target->instance_descriptors()->GetValue(target->LastAdded());
os << " " << Brief(value);
}
os << "), attrs: " << details.attributes();
}
os << " -> " << Brief(target);
}
}
void JSObject::PrintTransitions(std::ostream& os) { // NOLINT
Object* transitions = map()->raw_transitions();
int num_transitions = TransitionArray::NumberOfTransitions(transitions);
if (num_transitions == 0) return;
os << "\n - transitions";
TransitionArray::PrintTransitions(os, transitions, false);
}
#endif // defined(DEBUG) || defined(OBJECT_PRINT)
} // namespace internal
} // namespace v8
//
// The following functions are used by our gdb macros.
//
extern void _v8_internal_Print_Object(void* object) {
reinterpret_cast<i::Object*>(object)->Print();
}
extern void _v8_internal_Print_Code(void* object) {
i::Isolate* isolate = i::Isolate::Current();
isolate->FindCodeObject(reinterpret_cast<i::Address>(object))->Print();
}
extern void _v8_internal_Print_TypeFeedbackVector(void* object) {
if (reinterpret_cast<i::Object*>(object)->IsSmi()) {
printf("Not a type feedback vector\n");
} else {
reinterpret_cast<i::TypeFeedbackVector*>(object)->Print();
}
}
extern void _v8_internal_Print_DescriptorArray(void* object) {
if (reinterpret_cast<i::Object*>(object)->IsSmi()) {
printf("Not a descriptor array\n");
} else {
reinterpret_cast<i::DescriptorArray*>(object)->Print();
}
}
extern void _v8_internal_Print_TransitionArray(void* object) {
if (reinterpret_cast<i::Object*>(object)->IsSmi()) {
printf("Not a transition array\n");
} else {
reinterpret_cast<i::TransitionArray*>(object)->Print();
}
}
extern void _v8_internal_Print_StackTrace() {
i::Isolate* isolate = i::Isolate::Current();
isolate->PrintStack(stdout);
}
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