typeid.h revision 14299:2fbea9df56d2 
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
19#include "common.h"
20
21NAMESPACE_BEGIN(PYBIND11_NAMESPACE)
22NAMESPACE_BEGIN(detail)
23/// Erase all occurrences of a substring
24inline void erase_all(std::string &string, const std::string &search) {
25    for (size_t pos = 0;;) {
26        pos = string.find(search, pos);
27        if (pos == std::string::npos) break;
28        string.erase(pos, search.length());
29    }
30}
31
32PYBIND11_NOINLINE inline void clean_type_id(std::string &name) {
33#if defined(__GNUG__)
34    int status = 0;
35    std::unique_ptr<char, void (*)(void *)> res {
36        abi::__cxa_demangle(name.c_str(), nullptr, nullptr, &status), std::free };
37    if (status == 0)
38        name = res.get();
39#else
40    detail::erase_all(name, "class ");
41    detail::erase_all(name, "struct ");
42    detail::erase_all(name, "enum ");
43#endif
44    detail::erase_all(name, "pybind11::");
45}
46NAMESPACE_END(detail)
47
48/// Return a string representation of a C++ type
49template <typename T> static std::string type_id() {
50    std::string name(typeid(T).name());
51    detail::clean_type_id(name);
52    return name;
53}
54
55NAMESPACE_END(PYBIND11_NAMESPACE)
56