blob: 941fc88b3bcdaca3ac53e707e2848453e45745f6 [file] [log] [blame]
// Copyright 2018 The Chromium 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 "build/build_config.h"
#include "third_party/blink/renderer/platform/bindings/name_client.h"
#include "third_party/blink/renderer/platform/wtf/allocator.h"
#include "third_party/blink/renderer/platform/wtf/type_traits.h"
namespace blink {
template <typename T>
class NameTrait {
static constexpr bool HideInternalName() {
#if defined(OFFICIAL_BUILD) || !(defined(COMPILER_GCC) || defined(__clang__))
return true;
return false;
static const char* GetName(const void* obj) {
return GetNameFor(static_cast<const T*>(obj));
static const char* GetNameFor(const NameClient* wrapper_tracable) {
return wrapper_tracable->NameInHeapSnapshot();
static const char* GetNameFor(...) {
// For non-official builds construct the name of a type from a compiler
// intrinsic.
// Do not include such type information in official builds to
// (a) safe binary size on string literals, and
// (b) avoid exposing internal types until a proper DevTools frontend
// implementation is present.
#if defined(OFFICIAL_BUILD) || !(defined(COMPILER_GCC) || defined(__clang__))
return "InternalNode";
static const char* leaky_class_name = nullptr;
if (leaky_class_name)
return leaky_class_name;
// Parsing string of structure:
// const char *WTF::GetStringWithTypeName<TYPE>() [T = TYPE]
// Note that this only works on clang or GCC builds.
const std::string raw(WTF::GetStringWithTypeName<T>());
const auto start_pos = raw.rfind("T = ") + 4;
DCHECK(std::string::npos != start_pos);
const auto len = raw.length() - start_pos - 1;
const std::string name = raw.substr(start_pos, len).c_str();
leaky_class_name = strcpy(new char[name.length() + 1], name.c_str());
return leaky_class_name;
} // namespace blink