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_TRAVERSAL_H
18#define LATINIME_TRAVERSAL_H
19
20#include "defines.h"
21
22namespace latinime {
23
24class DicTraverseSession;
25
26class Traversal {
27 public:
28    virtual int getMaxPointerCount() const = 0;
29    virtual bool allowsErrorCorrections(const DicNode *const dicNode) const = 0;
30    virtual bool isOmission(const DicTraverseSession *const traverseSession,
31            const DicNode *const dicNode, const DicNode *const childDicNode,
32            const bool allowsErrorCorrections) const = 0;
33    virtual bool isSpaceSubstitutionTerminal(const DicTraverseSession *const traverseSession,
34            const DicNode *const dicNode) const = 0;
35    virtual bool isSpaceOmissionTerminal(const DicTraverseSession *const traverseSession,
36               const DicNode *const dicNode) const = 0;
37    virtual bool shouldDepthLevelCache(const DicTraverseSession *const traverseSession) const = 0;
38    virtual bool shouldNodeLevelCache(const DicTraverseSession *const traverseSession,
39            const DicNode *const dicNode) const = 0;
40    virtual bool canDoLookAheadCorrection(const DicTraverseSession *const traverseSession,
41            const DicNode *const dicNode) const = 0;
42    virtual ProximityType getProximityType(const DicTraverseSession *const traverseSession,
43            const DicNode *const dicNode, const DicNode *const childDicNode) const = 0;
44    virtual bool needsToTraverseAllUserInput() const = 0;
45    virtual float getMaxSpatialDistance() const = 0;
46    virtual int getDefaultExpandDicNodeSize() const = 0;
47    virtual int getMaxCacheSize(const int inputSize) const = 0;
48    virtual int getTerminalCacheSize() const = 0;
49    virtual bool isPossibleOmissionChildNode(const DicTraverseSession *const traverseSession,
50            const DicNode *const parentDicNode, const DicNode *const dicNode) const = 0;
51    virtual bool isGoodToTraverseNextWord(const DicNode *const dicNode) const = 0;
52
53 protected:
54    Traversal() {}
55    virtual ~Traversal() {}
56
57 private:
58    DISALLOW_COPY_AND_ASSIGN(Traversal);
59};
60} // namespace latinime
61#endif // LATINIME_TRAVERSAL_H
62