Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/core/policy/traversal.h

+/*
+ * Copyright (C) 2013 The Android Open Source Project
+ *
+ * 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.
+ */
+
+#ifndef LATINIME_TRAVERSAL_H
+#define LATINIME_TRAVERSAL_H
+
+#include "third_party/android_prediction/defines.h"
+
+namespace latinime {
+
+class DicTraverseSession;
+
+class Traversal {
+ public:
+    virtual int getMaxPointerCount() const = 0;
+    virtual bool allowsErrorCorrections(const DicNode *const dicNode) const = 0;
+    virtual bool isOmission(const DicTraverseSession *const traverseSession,
+            const DicNode *const dicNode, const DicNode *const childDicNode,
+            const bool allowsErrorCorrections) const = 0;
+    virtual bool isSpaceSubstitutionTerminal(const DicTraverseSession *const traverseSession,
+            const DicNode *const dicNode) const = 0;
+    virtual bool isSpaceOmissionTerminal(const DicTraverseSession *const traverseSession,
+               const DicNode *const dicNode) const = 0;
+    virtual bool shouldDepthLevelCache(const DicTraverseSession *const traverseSession) const = 0;
+    virtual bool shouldNodeLevelCache(const DicTraverseSession *const traverseSession,
+            const DicNode *const dicNode) const = 0;
+    virtual bool canDoLookAheadCorrection(const DicTraverseSession *const traverseSession,
+            const DicNode *const dicNode) const = 0;
+    virtual ProximityType getProximityType(const DicTraverseSession *const traverseSession,
+            const DicNode *const dicNode, const DicNode *const childDicNode) const = 0;
+    virtual bool needsToTraverseAllUserInput() const = 0;
+    virtual float getMaxSpatialDistance() const = 0;
+    virtual int getDefaultExpandDicNodeSize() const = 0;
+    virtual int getMaxCacheSize(const int inputSize) const = 0;
+    virtual int getTerminalCacheSize() const = 0;
+    virtual bool isPossibleOmissionChildNode(const DicTraverseSession *const traverseSession,
+            const DicNode *const parentDicNode, const DicNode *const dicNode) const = 0;
+    virtual bool isGoodToTraverseNextWord(const DicNode *const dicNode) const = 0;
+
+ protected:
+    Traversal() {}
+    virtual ~Traversal() {}
+
+ private:
+    DISALLOW_COPY_AND_ASSIGN(Traversal);
+};
+} // namespace latinime
+#endif // LATINIME_TRAVERSAL_H