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
33namespace tcu
34{
35
36class StringTemplate
37{
38public:
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
51private:
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 *//*--------------------------------------------------------------------*/
61namespace detail
62{
63static 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
71template <size_t ARG_NUM, typename unpacked_t>
72inline void unpackArgs(unpacked_t&) {}
73
74template <size_t ARG_NUM, typename unpacked_t, typename arg_t, typename... args_t>
75inline 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 *//*--------------------------------------------------------------------*/
87template <typename... args_t>
88std::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