DictGroup.hpp

/*
 * Open Chinese Convert
 *
 * Copyright 2010-2014 Carbo Kuo <byvoid@byvoid.com>
 *
 * 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 <list>
 
#include "Common.hpp"
#include "Dict.hpp"
 
namespace opencc {

class OPENCC_EXPORT DictGroup : public Dict {
public:
  explicit DictGroup(const std::list<DictPtr>& dicts);
 
  DictGroup(const std::list<DictPtr>& dicts, DictGroupMatchPolicy matchPolicy);
 
  static DictGroupPtr NewFromDict(const Dict& dict);
 
  virtual ~DictGroup();

  virtual size_t KeyMaxLength() const;

  virtual Optional<const DictEntry*> Match(const char* word, size_t len) const;

  virtual Optional<const DictEntry*> MatchPrefix(const char* word,
                                                 size_t len) const;

  virtual std::vector<const DictEntry*> MatchAllPrefixes(const char* word,
                                                         size_t len) const;

  virtual LexiconPtr GetLexicon() const;

  virtual const std::list<DictPtr>* GetDictGroupItems() const {
    return &dicts;
  }

  const std::list<DictPtr> GetDicts() const { return dicts; }

  virtual DictGroupMatchPolicy GetMatchPolicy() const { return matchPolicy; }
 
private:
  const size_t keyMaxLength;
  const std::list<DictPtr> dicts;
  const DictGroupMatchPolicy matchPolicy;
};

class OPENCC_EXPORT UnionDictGroup : public DictGroup {
public:
  explicit UnionDictGroup(const std::list<DictPtr>& dicts);
 
  virtual Optional<const DictEntry*> MatchPrefix(const char* word,
                                                 size_t len) const;
};
} // namespace opencc