1 #ifndef _TCUSTRINGTEMPLATE_HPP
2 #define _TCUSTRINGTEMPLATE_HPP
3 /*-------------------------------------------------------------------------
4 * drawElements Quality Program Tester Core
5 * ----------------------------------------
6 *
7 * Copyright 2014 The Android Open Source Project
8 * Copyright (c) 2020 The Khronos Group Inc.
9 * Copyright (c) 2020 Advanced Micro Devices, Inc.
10 *
11 * Licensed under the Apache License, Version 2.0 (the "License");
12 * you may not use this file except in compliance with the License.
13 * You may obtain a copy of the License at
14 *
15 * http://www.apache.org/licenses/LICENSE-2.0
16 *
17 * Unless required by applicable law or agreed to in writing, software
18 * distributed under the License is distributed on an "AS IS" BASIS,
19 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
20 * See the License for the specific language governing permissions and
21 * limitations under the License.
22 *
23 *//*!
24 * \file
25 * \brief String template class.
26 *//*--------------------------------------------------------------------*/
27
28 #include <deStringUtil.hpp>
29
30 #include <map>
31 #include <string>
32
33 namespace tcu
34 {
35
36 class StringTemplate
37 {
38 public:
39 StringTemplate (void);
40 StringTemplate (const std::string& str);
41 StringTemplate (StringTemplate&& other);
42 ~StringTemplate (void);
43
44 void setString (const std::string& str);
45
46 std::string specialize (const std::map<std::string, std::string>& params) const;
47
48 template <typename... args_t>
49 std::string format (args_t&&... args) const;
50
51 private:
52 StringTemplate (const StringTemplate&); // not allowed!
53 StringTemplate& operator= (const StringTemplate&); // not allowed!
54
55 std::string m_template;
56 } DE_WARN_UNUSED_TYPE;
57
58 /*--------------------------------------------------------------------*//*!
59 * Utility to unpack consecutive arguments into a parameter map
60 *//*--------------------------------------------------------------------*/
61 namespace detail
62 {
63 static constexpr const char* TOKENS[] = {
64 "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "10",
65 "11", "12", "13", "14", "15", "16", "17", "18", "19", "20", "21",
66 "22", "23", "24", "25", "26", "27", "28", "29", "30", "31", "32",
67 "33", "34", "35", "36", "37", "38", "39", "40", "41", "42", "43",
68 "44", "45", "46", "47", "48", "49", "50", "51", "52", "53", "54",
69 "55", "56", "57", "58", "59", "60", "61", "62", "63"};
70
71 template <size_t ARG_NUM, typename unpacked_t>
unpackArgs(unpacked_t &)72 inline void unpackArgs(unpacked_t&) {}
73
74 template <size_t ARG_NUM, typename unpacked_t, typename arg_t, typename... args_t>
unpackArgs(unpacked_t & unpacked,arg_t && cur,args_t &&...args)75 inline void unpackArgs(unpacked_t& unpacked, arg_t&& cur, args_t&&... args)
76 {
77 static_assert(ARG_NUM < DE_LENGTH_OF_ARRAY(TOKENS),
78 "ARG_NUM must be less than DE_LENGTH_OF_ARRAY(TOKENS)");
79 unpacked[TOKENS[ARG_NUM]] = de::toString(cur);
80 unpackArgs<ARG_NUM + 1>(unpacked, ::std::forward<args_t>(args)...);
81 }
82 } // detail
83
84 /*--------------------------------------------------------------------*//*!
85 * \brief Implementation of specialize() using a variable argument list
86 *//*--------------------------------------------------------------------*/
87 template <typename... args_t>
format(args_t &&...args) const88 std::string StringTemplate::format(args_t&&... args) const
89 {
90 std::map<std::string, std::string> unpacked = {};
91 detail::unpackArgs<0>(unpacked, ::std::forward<args_t>(args)...);
92 return specialize(unpacked);
93 }
94
95 } // tcu
96
97 #endif // _TCUSTRINGTEMPLATE_HPP
98