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1 // Copyright 2020 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #include "include/cppgc/internal/name-trait.h"
6 
7 #include <stdio.h>
8 
9 #include "src/base/logging.h"
10 #include "src/base/macros.h"
11 
12 namespace cppgc {
13 
14 // static
15 constexpr const char NameProvider::kHiddenName[];
16 
17 // static
18 constexpr const char NameProvider::kNoNameDeducible[];
19 
20 namespace internal {
21 
22 // static
GetNameFromTypeSignature(const char * signature)23 HeapObjectName NameTraitBase::GetNameFromTypeSignature(const char* signature) {
24   // Parsing string of structure:
25   //    static HeapObjectName NameTrait<int>::GetNameFor(...) [T = int]
26   if (!signature) return {NameProvider::kNoNameDeducible, true};
27 
28   const std::string raw(signature);
29   const auto start_pos = raw.rfind("T = ") + 4;
30   DCHECK_NE(std::string::npos, start_pos);
31   const auto len = raw.length() - start_pos - 1;
32   const std::string name = raw.substr(start_pos, len).c_str();
33   char* name_buffer = new char[name.length() + 1];
34   int written = snprintf(name_buffer, name.length() + 1, "%s", name.c_str());
35   DCHECK_EQ(static_cast<size_t>(written), name.length());
36   USE(written);
37   return {name_buffer, false};
38 }
39 
40 }  // namespace internal
41 }  // namespace cppgc
42