folly/folly/detail/RangeCommon.h

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#pragma once

#include <algorithm>
#include <cassert>
#include <string>

#include <folly/Likely.h>

namespace folly {

namespace detail {

/***
 *  The qfind_first_byte_of_* functions are declared here, before Range.h, so
 *  they cannot take StringPiece values. But they're there to operate on
 *  StringPiece values. Dependency cycles: fun.
 *
 *  StringPieceLite is here to break that dependency cycle.
 */
class StringPieceLite { … };

inline size_t qfind_first_byte_of_std(
    const StringPieceLite haystack, const StringPieceLite needles) { … }

size_t qfind_first_byte_of_bitset(
    const StringPieceLite haystack, const StringPieceLite needles);

size_t qfind_first_byte_of_byteset(
    const StringPieceLite haystack, const StringPieceLite needles);

inline size_t qfind_first_byte_of_nosse(
    const StringPieceLite haystack, const StringPieceLite needles) { … }
} // namespace detail
} // namespace folly