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// Copyright (c) 2011-2017 The OTS 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 OTS_GSUB_H_
#define OTS_GSUB_H_
#include "ots.h"
#include "layout.h"
namespace ots {
class OpenTypeGSUB : public OpenTypeLayoutTable {
public:
explicit OpenTypeGSUB(Font *font, uint32_t tag)
: OpenTypeLayoutTable(font, tag, tag) { }
private:
bool ValidLookupSubtableType(uint16_t lookup_type,
bool extension = false) const;
bool ParseLookupSubtable(const uint8_t *data, const size_t length,
const uint16_t lookup_type);
bool ParseSingleSubstitution(const uint8_t *data, const size_t length);
bool ParseMutipleSubstitution(const uint8_t *data, const size_t length);
bool ParseAlternateSubstitution(const uint8_t *data, const size_t length);
bool ParseLigatureSubstitution(const uint8_t *data, const size_t length);
bool ParseReverseChainingContextSingleSubstitution(const uint8_t *data, const size_t length);
};
} // namespace ots
#endif // OTS_GSUB_H_
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