Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/shortcut/shortcut_list_reading_utils.cpp

Index: third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/shortcut/shortcut_list_reading_utils.cpp
diff --git a/third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/shortcut/shortcut_list_reading_utils.cpp b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/shortcut/shortcut_list_reading_utils.cpp
new file mode 100644
index 0000000000000000000000000000000000000000..9395877ddc2e1c9e58a483330d822172ba58f9b3
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+++ b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/shortcut/shortcut_list_reading_utils.cpp
@@ -0,0 +1,51 @@
+/*
+ * 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.
+ */
+
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/structure/pt_common/shortcut/shortcut_list_reading_utils.h"
+
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/utils/byte_array_utils.h"
+
+namespace latinime {
+
+// Flag for presence of more attributes
+const ShortcutListReadingUtils::ShortcutFlags
+        ShortcutListReadingUtils::FLAG_ATTRIBUTE_HAS_NEXT = 0x80;
+// Mask for attribute probability, stored on 4 bits inside the flags byte.
+const ShortcutListReadingUtils::ShortcutFlags
+        ShortcutListReadingUtils::MASK_ATTRIBUTE_PROBABILITY = 0x0F;
+const int ShortcutListReadingUtils::SHORTCUT_LIST_SIZE_FIELD_SIZE = 2;
+// The numeric value of the shortcut probability that means 'whitelist'.
+const int ShortcutListReadingUtils::WHITELIST_SHORTCUT_PROBABILITY = 15;
+
+/* static */ ShortcutListReadingUtils::ShortcutFlags
+        ShortcutListReadingUtils::getFlagsAndForwardPointer(const uint8_t *const dictRoot,
+                int *const pos) {
+    return ByteArrayUtils::readUint8AndAdvancePosition(dictRoot, pos);
+}
+
+/* static */ int ShortcutListReadingUtils::getShortcutListSizeAndForwardPointer(
+        const uint8_t *const dictRoot, int *const pos) {
+    // readUint16andAdvancePosition() returns an offset *including* the uint16 field itself.
+    return ByteArrayUtils::readUint16AndAdvancePosition(dictRoot, pos)
+            - SHORTCUT_LIST_SIZE_FIELD_SIZE;
+}
+
+/* static */ int ShortcutListReadingUtils::readShortcutTarget(
+        const uint8_t *const dictRoot, const int maxLength, int *const outWord, int *const pos) {
+    return ByteArrayUtils::readStringAndAdvancePosition(dictRoot, maxLength, outWord, pos);
+}
+
+} // namespace latinime