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95 lines
4.2 KiB
C++
95 lines
4.2 KiB
C++
/*
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* Copyright (C) 2009 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef PINYINIME_INCLUDE_SPLPARSER_H__
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#define PINYINIME_INCLUDE_SPLPARSER_H__
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#include "./dictdef.h"
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#include "./spellingtrie.h"
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namespace ime_pinyin {
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class SpellingParser {
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protected:
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const SpellingTrie* spl_trie_;
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public:
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SpellingParser();
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// Given a string, parse it into a spelling id stream.
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// If the whole string are sucessfully parsed, last_is_pre will be true;
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// if the whole string is not fullly parsed, last_is_pre will return whether
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// the last part of the string is a prefix of a full spelling string. For
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// example, given string "zhengzhon", "zhon" is not a valid speling, but it is
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// the prefix of "zhong".
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//
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// If splstr starts with a character not in ['a'-z'] (it is a split char),
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// return 0.
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// Split char can only appear in the middle of the string or at the end.
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uint16 splstr_to_idxs(const char* splstr, uint16 str_len, uint16 splidx[], uint16 start_pos[],
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uint16 max_size, bool& last_is_pre);
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// Similar to splstr_to_idxs(), the only difference is that splstr_to_idxs()
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// convert single-character Yunmus into half ids, while this function converts
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// them into full ids.
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uint16 splstr_to_idxs_f(const char* splstr, uint16 str_len, uint16 splidx[], uint16 start_pos[],
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uint16 max_size, bool& last_is_pre);
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// Similar to splstr_to_idxs(), the only difference is that this function
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// uses char16 instead of char8.
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uint16 splstr16_to_idxs(const char16* splstr, uint16 str_len, uint16 splidx[], uint16 start_pos[],
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uint16 max_size, bool& last_is_pre);
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// Similar to splstr_to_idxs_f(), the only difference is that this function
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// uses char16 instead of char8.
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uint16 splstr16_to_idxs_f(const char16* splstr16, uint16 str_len, uint16 splidx[],
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uint16 start_pos[], uint16 max_size, bool& last_is_pre);
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// If the given string is a spelling, return the id, others, return 0.
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// If the give string is a single char Yunmus like "A", and the char is
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// enabled in ShouZiMu mode, the returned spelling id will be a half id.
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// When the returned spelling id is a half id, *is_pre returns whether it
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// is a prefix of a full spelling string.
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uint16 get_splid_by_str(const char* splstr, uint16 str_len, bool* is_pre);
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// If the given string is a spelling, return the id, others, return 0.
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// If the give string is a single char Yunmus like "a", no matter the char
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// is enabled in ShouZiMu mode or not, the returned spelling id will be
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// a full id.
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// When the returned spelling id is a half id, *p_is_pre returns whether it
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// is a prefix of a full spelling string.
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uint16 get_splid_by_str_f(const char* splstr, uint16 str_len, bool* is_pre);
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// Splitter chars are not included.
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bool is_valid_to_parse(char ch);
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// When auto-correction is not enabled, get_splid_by_str() will be called to
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// return the single result. When auto-correction is enabled, this function
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// will be called to get the results. Auto-correction is not ready.
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// full_id_num returns number of full spelling ids.
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// is_pre returns whether the given string is the prefix of a full spelling
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// string.
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// If splstr starts with a character not in [a-zA-Z] (it is a split char),
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// return 0.
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// Split char can only appear in the middle of the string or at the end.
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// The caller should guarantee NULL != splstr && str_len > 0 && NULL != splidx
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uint16 get_splids_parallel(const char* splstr, uint16 str_len, uint16 splidx[], uint16 max_size,
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uint16& full_id_num, bool& is_pre);
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};
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} // namespace ime_pinyin
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#endif // PINYINIME_INCLUDE_SPLPARSER_H__
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