terminal_position_lookup_table.h revision 2ac934296c0571ea252f3fb5a23fba29eb89c666 
1/*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef LATINIME_TERMINAL_POSITION_LOOKUP_TABLE_H
18#define LATINIME_TERMINAL_POSITION_LOOKUP_TABLE_H
19
20#include <cstdint>
21#include <cstdio>
22#include <unordered_map>
23
24#include "defines.h"
25#include "suggest/policyimpl/dictionary/structure/v4/content/single_dict_content.h"
26#include "suggest/policyimpl/dictionary/structure/v4/ver4_dict_constants.h"
27
28namespace latinime {
29
30class TerminalPositionLookupTable : public SingleDictContent {
31 public:
32    typedef std::unordered_map<int, int> TerminalIdMap;
33
34    TerminalPositionLookupTable(uint8_t *const buffer, const int bufferSize,
35            const bool isUpdatable)
36            : SingleDictContent(buffer, bufferSize, isUpdatable),
37              mSize(getBuffer()->getTailPosition()
38                      / Ver4DictConstants::TERMINAL_ADDRESS_TABLE_ADDRESS_SIZE) {}
39
40    TerminalPositionLookupTable() : mSize(0) {}
41
42    int getTerminalPtNodePosition(const int terminalId) const;
43
44    bool setTerminalPtNodePosition(const int terminalId, const int terminalPtNodePos);
45
46    int getNextTerminalId() const {
47        return mSize;
48    }
49
50    bool flushToFile(FILE *const file) const;
51
52    bool runGCTerminalIds(TerminalIdMap *const terminalIdMap);
53
54 private:
55    DISALLOW_COPY_AND_ASSIGN(TerminalPositionLookupTable);
56
57    int getEntryPos(const int terminalId) const {
58        return terminalId * Ver4DictConstants::TERMINAL_ADDRESS_TABLE_ADDRESS_SIZE;
59    }
60
61    int mSize;
62};
63} // namespace latinime
64#endif // LATINIME_TERMINAL_POSITION_LOOKUP_TABLE_H
65