Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/ver4_patricia_trie_node_reader.h

Index: third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/ver4_patricia_trie_node_reader.h
diff --git a/third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/ver4_patricia_trie_node_reader.h b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/v4/ver4_patricia_trie_node_reader.h
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+/*
+ * 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_VER4_PATRICIA_TRIE_NODE_READER_H
+#define LATINIME_VER4_PATRICIA_TRIE_NODE_READER_H
+
+#include "third_party/android_prediction/defines.h"
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/pt_node_params.h"
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/pt_node_reader.h"
+
+namespace latinime {
+
+class BufferWithExtendableBuffer;
+class HeaderPolicy;
+class LanguageModelDictContent;
+
+/*
+ * This class is used for helping to read nodes of ver4 patricia trie. This class handles moved
+ * node and reads node attributes including probability form language model.
+ */
+class Ver4PatriciaTrieNodeReader : public PtNodeReader {
+ public:
+    Ver4PatriciaTrieNodeReader(const BufferWithExtendableBuffer *const buffer,
+            const LanguageModelDictContent *const languageModelDictContent,
+            const HeaderPolicy *const headerPolicy)
+            : mBuffer(buffer), mLanguageModelDictContent(languageModelDictContent),
+              mHeaderPolicy(headerPolicy) {}
+
+    ~Ver4PatriciaTrieNodeReader() {}
+
+    virtual const PtNodeParams fetchPtNodeParamsInBufferFromPtNodePos(const int ptNodePos) const {
+        return fetchPtNodeInfoFromBufferAndProcessMovedPtNode(ptNodePos,
+                NOT_A_DICT_POS /* siblingNodePos */);
+    }
+
+ private:
+    DISALLOW_COPY_AND_ASSIGN(Ver4PatriciaTrieNodeReader);
+
+    const BufferWithExtendableBuffer *const mBuffer;
+    const LanguageModelDictContent *const mLanguageModelDictContent;
+    const HeaderPolicy *const mHeaderPolicy;
+
+    const PtNodeParams fetchPtNodeInfoFromBufferAndProcessMovedPtNode(const int ptNodePos,
+            const int siblingNodePos) const;
+};
+} // namespace latinime
+#endif /* LATINIME_VER4_PATRICIA_TRIE_NODE_READER_H */