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//===-- MemoryMatcher.cpp ---------------------------------------*- C++ -*-===//
//
// 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 "MemoryMatcher.h"
#include "test/UnitTest/Test.h"
using __llvm_libc::testing::tlog;
namespace __llvm_libc {
namespace testing {
template <typename T>
bool equals(const cpp::span<T> &Span1, const cpp::span<T> &Span2,
bool &mismatch_size, size_t &mismatch_index) {
if (Span1.size() != Span2.size()) {
mismatch_size = true;
return false;
}
for (size_t Index = 0; Index < Span1.size(); ++Index)
if (Span1[Index] != Span2[Index]) {
mismatch_index = Index;
return false;
}
return true;
}
bool MemoryMatcher::match(MemoryView actualValue) {
actual = actualValue;
return equals(expected, actual, mismatch_size, mismatch_index);
}
static void display(char C) {
const auto print = [](unsigned char I) {
tlog << static_cast<char>(I < 10 ? '0' + I : 'A' + I - 10);
};
print(static_cast<unsigned char>(C) / 16);
print(static_cast<unsigned char>(C) & 15);
}
static void display(MemoryView View) {
for (auto C : View) {
tlog << ' ';
display(C);
}
}
void MemoryMatcher::explainError() {
if (mismatch_size) {
tlog << "Size mismatch :";
tlog << "expected : ";
tlog << expected.size();
tlog << '\n';
tlog << "actual : ";
tlog << actual.size();
tlog << '\n';
} else {
tlog << "Mismatch at position : ";
tlog << mismatch_index;
tlog << " / ";
tlog << expected.size();
tlog << "\n";
tlog << "expected :";
display(expected);
tlog << '\n';
tlog << "actual :";
display(actual);
tlog << '\n';
}
}
} // namespace testing
} // namespace __llvm_libc
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