typeid.h revision 12391:ceeca8b41e4b 
1/*
2    pybind11/detail/typeid.h: Compiler-independent access to type identifiers
3
4    Copyright (c) 2016 Wenzel Jakob <wenzel.jakob@epfl.ch>
5
6    All rights reserved. Use of this source code is governed by a
7    BSD-style license that can be found in the LICENSE file.
8*/
9
10#pragma once
11
12#include <cstdio>
13#include <cstdlib>
14
15#if defined(__GNUG__)
16#include <cxxabi.h>
17#endif
18
19NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
20NAMESPACE_BEGIN(detail)
21/// Erase all occurrences of a substring
22inline void erase_all(std::string &string, const std::string &search) {
23    for (size_t pos = 0;;) {
24        pos = string.find(search, pos);
25        if (pos == std::string::npos) break;
26        string.erase(pos, search.length());
27    }
28}
29
30PYBIND11_NOINLINE inline void clean_type_id(std::string &name) {
31#if defined(__GNUG__)
32    int status = 0;
33    std::unique_ptr<char, void (*)(void *)> res {
34        abi::__cxa_demangle(name.c_str(), nullptr, nullptr, &status), std::free };
35    if (status == 0)
36        name = res.get();
37#else
38    detail::erase_all(name, "class ");
39    detail::erase_all(name, "struct ");
40    detail::erase_all(name, "enum ");
41#endif
42    detail::erase_all(name, "pybind11::");
43}
44NAMESPACE_END(detail)
45
46/// Return a string representation of a C++ type
47template <typename T> static std::string type_id() {
48    std::string name(typeid(T).name());
49    detail::clean_type_id(name);
50    return name;
51}
52
53NAMESPACE_END(PYBIND11_NAMESPACE)
54