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1//===----------------------------------------------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===----------------------------------------------------------------------===//8 9#ifndef SUPPORT_TEST_MAKE_STRING_H10#define SUPPORT_TEST_MAKE_STRING_H11 12#include "test_macros.h"13 14#include <string>15#include <string_view>16 17#ifndef TEST_HAS_NO_WIDE_CHARACTERS18# define MKSTR_WCHAR_ONLY(...) __VA_ARGS__19# define MKSTR_AS_WCHAR_LITERAL(x) TEST_CONCAT(L, x), sizeof(TEST_CONCAT(L, x)) / sizeof(wchar_t) - 120#else21# define MKSTR_WCHAR_ONLY(...)22#endif23 24#if TEST_STD_VER > 17 && defined(__cpp_char8_t)25#define MKSTR_CHAR8_ONLY(...) __VA_ARGS__26#define MKSTR_AS_U8_LITERAL(x) TEST_CONCAT(u8, x), sizeof(TEST_CONCAT(u8, x)) / sizeof(char8_t) - 127#else28#define MKSTR_CHAR8_ONLY(...)29#endif30 31#if TEST_STD_VER >= 1132#define MKSTR_CXX11_ONLY(...) __VA_ARGS__33#define MKSTR_AS_U16_LITERAL(x) TEST_CONCAT(u, x), sizeof(TEST_CONCAT(u, x)) / sizeof(char16_t) - 134#define MKSTR_AS_U32_LITERAL(x) TEST_CONCAT(U, x), sizeof(TEST_CONCAT(U, x)) / sizeof(char32_t) - 135#else36#define MKSTR_CXX11_ONLY(...)37#endif38 39#define MKSTR(Str) MultiStringType( \40 MKSTR_WCHAR_ONLY(MKSTR_AS_WCHAR_LITERAL(Str),) \41 MKSTR_CHAR8_ONLY(MKSTR_AS_U8_LITERAL(Str),) \42 MKSTR_CXX11_ONLY(MKSTR_AS_U16_LITERAL(Str), \43 MKSTR_AS_U32_LITERAL(Str),) \44 Str, sizeof(Str) - 1 \45 )46 47#define MKSTR_LEN(CharT, Str) MKSTR(Str).length((const CharT*)0)48 49struct MultiStringType {50 MKSTR_WCHAR_ONLY(const wchar_t* w_; std::size_t wn_; )51 MKSTR_CHAR8_ONLY(const char8_t* u8_; std::size_t u8n_; )52 MKSTR_CXX11_ONLY(const char16_t* u16_; std::size_t u16n_; )53 MKSTR_CXX11_ONLY(const char32_t* u32_; std::size_t u32n_; )54 const char* s_; std::size_t sn_;55 56 TEST_CONSTEXPR MultiStringType(57 MKSTR_WCHAR_ONLY(const wchar_t *w, std::size_t wn,)58 MKSTR_CHAR8_ONLY(const char8_t *u8, std::size_t u8n,)59 MKSTR_CXX11_ONLY(const char16_t *u16, std::size_t u16n,)60 MKSTR_CXX11_ONLY(const char32_t *u32, std::size_t u32n,)61 const char *s, std::size_t sn)62 : MKSTR_WCHAR_ONLY(w_(w), wn_(wn),)63 MKSTR_CHAR8_ONLY(u8_(u8), u8n_(u8n),)64 MKSTR_CXX11_ONLY(u16_(u16), u16n_(u16n),)65 MKSTR_CXX11_ONLY(u32_(u32), u32n_(u32n),)66 s_(s), sn_(sn) {}67 68 TEST_CONSTEXPR const char *as_ptr(const char*) const { return s_; }69 MKSTR_WCHAR_ONLY(TEST_CONSTEXPR const wchar_t *as_ptr(const wchar_t*) const { return w_; })70 MKSTR_CHAR8_ONLY(constexpr const char8_t *as_ptr(const char8_t*) const { return u8_; })71 MKSTR_CXX11_ONLY(constexpr const char16_t *as_ptr(const char16_t*) const { return u16_; })72 MKSTR_CXX11_ONLY(constexpr const char32_t *as_ptr(const char32_t*) const { return u32_; })73 74 TEST_CONSTEXPR std::size_t length(const char*) const { return sn_; }75 MKSTR_WCHAR_ONLY(TEST_CONSTEXPR std::size_t length(const wchar_t*) const { return wn_; })76 MKSTR_CHAR8_ONLY(constexpr std::size_t length(const char8_t*) const { return u8n_; })77 MKSTR_CXX11_ONLY(constexpr std::size_t length(const char16_t*) const { return u16n_; })78 MKSTR_CXX11_ONLY(constexpr std::size_t length(const char32_t*) const { return u32n_; })79 80 // These implicit conversions are used by some tests. TODO: maybe eliminate them?81 TEST_CONSTEXPR operator const char*() const { return s_; }82 MKSTR_WCHAR_ONLY(TEST_CONSTEXPR operator const wchar_t*() const { return w_; })83 MKSTR_CHAR8_ONLY(constexpr operator const char8_t*() const { return u8_; })84 MKSTR_CXX11_ONLY(constexpr operator const char16_t*() const { return u16_; })85 MKSTR_CXX11_ONLY(constexpr operator const char32_t*() const { return u32_; })86};87 88// Helper to convert a const char* string to a const CharT*.89// This helper is used in unit tests to make them generic. The input should be90// valid ASCII which means the input is also valid UTF-8.91#define MAKE_CSTRING(CharT, Str) \92 MKSTR(Str).as_ptr(static_cast<const CharT*>(nullptr))93 94// Like MAKE_CSTRING but makes a basic_string<CharT>. Embedded nulls are OK.95#define MAKE_STRING(CharT, Str) \96 std::basic_string<CharT>(MAKE_CSTRING(CharT, Str), MKSTR_LEN(CharT, Str))97 98// Like MAKE_CSTRING but makes a basic_string_view<CharT>. Embedded nulls are OK.99#define MAKE_STRING_VIEW(CharT, Str) \100 std::basic_string_view<CharT>(MAKE_CSTRING(CharT, Str), MKSTR_LEN(CharT, Str))101 102#endif103