chromium/v8/src/strings/unicode-decoder.h

// Copyright 2014 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef V8_STRINGS_UNICODE_DECODER_H_
#define V8_STRINGS_UNICODE_DECODER_H_

#include "src/base/vector.h"
#include "src/strings/unicode.h"

namespace v8 {
namespace internal {

// The return value may point to the first aligned word containing the first
// non-one-byte character, rather than directly to the non-one-byte character.
// If the return value is >= the passed length, the entire string was
// one-byte.
inline int NonAsciiStart(const uint8_t* chars, int length) { … }

template <class Decoder>
class Utf8DecoderBase { … };

class V8_EXPORT_PRIVATE Utf8Decoder final
    : public Utf8DecoderBase<Utf8Decoder> { … };

#if V8_ENABLE_WEBASSEMBLY
// Like Utf8Decoder above, except that instead of replacing invalid sequences
// with U+FFFD, we have a separate Encoding::kInvalid state, and we also accept
// isolated surrogates.
class Wtf8Decoder : public Utf8DecoderBase<Wtf8Decoder> { … };

// Like Utf8Decoder above, except that instead of replacing invalid sequences
// with U+FFFD, we have a separate Encoding::kInvalid state.
class StrictUtf8Decoder : public Utf8DecoderBase<StrictUtf8Decoder> { … };
#endif  // V8_ENABLE_WEBASSEMBLY

}  // namespace internal
}  // namespace v8

#endif  // V8_STRINGS_UNICODE_DECODER_H_