blob: c91161709bd62c56ab175edb0532e9b918ed24af [file] [log] [blame]
// Copyright 2021 The PDFium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CORE_FXCRT_SPAN_UTIL_H_
#define CORE_FXCRT_SPAN_UTIL_H_
#include <string.h>
#include "third_party/base/check_op.h"
#include "third_party/base/span.h"
namespace fxcrt {
// Bounds-checked copies from spans into spans.
template <typename T,
typename U,
typename = pdfium::internal::EnableIfLegalSpanConversion<T, U>>
void spancpy(pdfium::span<T> dst, pdfium::span<U> src) {
CHECK_GE(dst.size_bytes(), src.size_bytes());
memcpy(dst.data(), src.data(), src.size_bytes());
}
// Bounds-checked moves from spans into spans.
template <typename T,
typename U,
typename = pdfium::internal::EnableIfLegalSpanConversion<T, U>>
void spanmove(pdfium::span<T> dst, pdfium::span<U> src) {
CHECK_GE(dst.size_bytes(), src.size_bytes());
memmove(dst.data(), src.data(), src.size_bytes());
}
// Bounds-checked sets into spans.
template <typename T>
void spanset(pdfium::span<T> dst, uint8_t val) {
memset(dst.data(), val, dst.size_bytes());
}
// Bounds-checked zeroing of spans.
template <typename T>
void spanclr(pdfium::span<T> dst) {
memset(dst.data(), 0, dst.size_bytes());
}
} // namespace fxcrt
#endif // CORE_FXCRT_SPAN_UTIL_H_