Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/policyimpl/dictionary/structure/v2/ver2_patricia_trie_node_reader.cpp

Index: third_party/android_prediction/suggest/policyimpl/dictionary/structure/v2/ver2_patricia_trie_node_reader.cpp
diff --git a/third_party/android_prediction/suggest/policyimpl/dictionary/structure/v2/ver2_patricia_trie_node_reader.cpp b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/v2/ver2_patricia_trie_node_reader.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..74458fae3d931de959f9ba8d23a84b8cf72a1e57
--- /dev/null
+++ b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/v2/ver2_patricia_trie_node_reader.cpp
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2014, 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.
+ */
+
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/structure/v2/ver2_patricia_trie_node_reader.h"
+
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/patricia_trie_reading_utils.h"
+
+namespace latinime {
+
+const PtNodeParams Ver2ParticiaTrieNodeReader::fetchPtNodeParamsInBufferFromPtNodePos(
+        const int ptNodePos) const {
+    if (ptNodePos < 0 || ptNodePos >= mDictSize) {
+        // Reading invalid position because of bug or broken dictionary.
+        AKLOGE("Fetching PtNode info from invalid dictionary position: %d, dictionary size: %d",
+                ptNodePos, mDictSize);
+        ASSERT(false);
+        return PtNodeParams();
+    }
+    PatriciaTrieReadingUtils::NodeFlags flags;
+    int mergedNodeCodePointCount = 0;
+    int mergedNodeCodePoints[MAX_WORD_LENGTH];
+    int probability = NOT_A_PROBABILITY;
+    int childrenPos = NOT_A_DICT_POS;
+    int shortcutPos = NOT_A_DICT_POS;
+    int bigramPos = NOT_A_DICT_POS;
+    int siblingPos = NOT_A_DICT_POS;
+    PatriciaTrieReadingUtils::readPtNodeInfo(mDictBuffer, ptNodePos, mShortuctPolicy,
+            mBigramPolicy, &flags, &mergedNodeCodePointCount, mergedNodeCodePoints, &probability,
+            &childrenPos, &shortcutPos, &bigramPos, &siblingPos);
+    if (mergedNodeCodePointCount <= 0) {
+        AKLOGE("Empty PtNode is not allowed. Code point count: %d", mergedNodeCodePointCount);
+        ASSERT(false);
+        return PtNodeParams();
+    }
+    return PtNodeParams(ptNodePos, flags, mergedNodeCodePointCount, mergedNodeCodePoints,
+            probability, childrenPos, shortcutPos, bigramPos, siblingPos);
+}
+
+}