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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/Support/Format.h"
#include "gtest/gtest.h"
using namespace llvm;
namespace {
template <typename FormatTy>
std::string printToString(unsigned MaxN, FormatTy &&Fmt) {
std::vector<char> Dst(MaxN + 2);
int N = Fmt.snprint(Dst.data(), Dst.size());
Dst.back() = 0;
return N < 0 ? "" : Dst.data();
}
template <typename Expected, typename Arg>
constexpr bool checkDecayTypeEq(const Arg &arg) {
return std::is_same_v<detail::decay_if_c_char_array_t<Arg>, Expected>;
}
TEST(Format, DecayIfCCharArray) {
char Array[] = "Array";
const char ConstArray[] = "ConstArray";
char PtrBuf[] = "Ptr";
char *Ptr = PtrBuf;
const char *PtrToConst = "PtrToConst";
EXPECT_EQ(" Literal", printToString(20, format("%15s", "Literal")));
EXPECT_EQ(" Array", printToString(20, format("%15s", Array)));
EXPECT_EQ(" ConstArray", printToString(20, format("%15s", ConstArray)));
EXPECT_EQ(" Ptr", printToString(20, format("%15s", Ptr)));
EXPECT_EQ(" PtrToConst", printToString(20, format("%15s", PtrToConst)));
EXPECT_TRUE(checkDecayTypeEq<const char *>("Literal"));
EXPECT_TRUE(checkDecayTypeEq<const char *>(Array));
EXPECT_TRUE(checkDecayTypeEq<const char *>(ConstArray));
EXPECT_TRUE(checkDecayTypeEq<char *>(Ptr));
EXPECT_TRUE(checkDecayTypeEq<const char *>(PtrToConst));
EXPECT_TRUE(checkDecayTypeEq<char>(PtrToConst[0]));
EXPECT_TRUE(
checkDecayTypeEq<const char *>(static_cast<const char *>("Literal")));
wchar_t WCharArray[] = L"WCharArray";
EXPECT_TRUE(checkDecayTypeEq<wchar_t[11]>(WCharArray));
EXPECT_TRUE(checkDecayTypeEq<wchar_t>(WCharArray[0]));
}
} // namespace
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