Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/policyimpl/dictionary/structure/backward/v402/content/shortcut_dict_content.cpp

Index: third_party/android_prediction/suggest/policyimpl/dictionary/structure/backward/v402/content/shortcut_dict_content.cpp
diff --git a/third_party/android_prediction/suggest/policyimpl/dictionary/structure/backward/v402/content/shortcut_dict_content.cpp b/third_party/android_prediction/suggest/policyimpl/dictionary/structure/backward/v402/content/shortcut_dict_content.cpp
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index 0000000000000000000000000000000000000000..80901a098a648446f1343e1ee0303a155990311b
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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.
+ */
+
+/*
+ * !!!!! DO NOT EDIT THIS FILE !!!!!
+ *
+ * This file was generated from
+ *   suggest/policyimpl/dictionary/structure/v4/content/shortcut_dict_content.cpp
+ */
+
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/structure/backward/v402/content/shortcut_dict_content.h"
+
+#include "third_party/android_prediction/suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
+
+namespace latinime {
+namespace backward {
+namespace v402 {
+
+void ShortcutDictContent::getShortcutEntryAndAdvancePosition(const int maxCodePointCount,
+        int *const outCodePoint, int *const outCodePointCount, int *const outProbability,
+        bool *const outhasNext, int *const shortcutEntryPos) const {
+    const BufferWithExtendableBuffer *const shortcutListBuffer = getContentBuffer();
+    if (*shortcutEntryPos < 0 || *shortcutEntryPos >=  shortcutListBuffer->getTailPosition()) {
+        AKLOGE("Invalid shortcut entry position. shortcutEntryPos: %d, bufSize: %d",
+                *shortcutEntryPos, shortcutListBuffer->getTailPosition());
+        ASSERT(false);
+        if (outhasNext) {
+            *outhasNext = false;
+        }
+        if (outCodePointCount) {
+            *outCodePointCount = 0;
+        }
+        return;
+    }
+
+    const int shortcutFlags = shortcutListBuffer->readUintAndAdvancePosition(
+            Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos);
+    if (outProbability) {
+        *outProbability = shortcutFlags & Ver4DictConstants::SHORTCUT_PROBABILITY_MASK;
+    }
+    if (outhasNext) {
+        *outhasNext = shortcutFlags & Ver4DictConstants::SHORTCUT_HAS_NEXT_MASK;
+    }
+    if (outCodePoint && outCodePointCount) {
+        shortcutListBuffer->readCodePointsAndAdvancePosition(
+                maxCodePointCount, outCodePoint, outCodePointCount, shortcutEntryPos);
+    }
+}
+
+int ShortcutDictContent::getShortcutListHeadPos(const int terminalId) const {
+    const SparseTable *const addressLookupTable = getAddressLookupTable();
+    if (!addressLookupTable->contains(terminalId)) {
+        return NOT_A_DICT_POS;
+    }
+    return addressLookupTable->get(terminalId);
+}
+
+bool ShortcutDictContent::flushToFile(const char *const dictPath) const {
+    return flush(dictPath, Ver4DictConstants::SHORTCUT_LOOKUP_TABLE_FILE_EXTENSION,
+            Ver4DictConstants::SHORTCUT_CONTENT_TABLE_FILE_EXTENSION,
+            Ver4DictConstants::SHORTCUT_FILE_EXTENSION);
+}
+
+bool ShortcutDictContent::runGC(
+        const TerminalPositionLookupTable::TerminalIdMap *const terminalIdMap,
+        const ShortcutDictContent *const originalShortcutDictContent) {
+   for (TerminalPositionLookupTable::TerminalIdMap::const_iterator it = terminalIdMap->begin();
+           it != terminalIdMap->end(); ++it) {
+       const int originalShortcutListPos =
+               originalShortcutDictContent->getShortcutListHeadPos(it->first);
+       if (originalShortcutListPos == NOT_A_DICT_POS) {
+           continue;
+       }
+       const int shortcutListPos = getContentBuffer()->getTailPosition();
+       // Copy shortcut list from original content.
+       if (!copyShortcutListFromDictContent(originalShortcutListPos, originalShortcutDictContent,
+               shortcutListPos)) {
+           AKLOGE("Cannot copy shortcut list during GC. original pos: %d, pos: %d",
+                   originalShortcutListPos, shortcutListPos);
+           return false;
+       }
+       // Set shortcut list position to the lookup table.
+       if (!getUpdatableAddressLookupTable()->set(it->second, shortcutListPos)) {
+           AKLOGE("Cannot set shortcut list position. terminal id: %d, pos: %d",
+                   it->second, shortcutListPos);
+           return false;
+       }
+   }
+   return true;
+}
+
+bool ShortcutDictContent::createNewShortcutList(const int terminalId) {
+    const int shortcutListListPos = getContentBuffer()->getTailPosition();
+    return getUpdatableAddressLookupTable()->set(terminalId, shortcutListListPos);
+}
+
+bool ShortcutDictContent::copyShortcutList(const int shortcutListPos, const int toPos) {
+    return copyShortcutListFromDictContent(shortcutListPos, this, toPos);
+}
+
+bool ShortcutDictContent::copyShortcutListFromDictContent(const int shortcutListPos,
+        const ShortcutDictContent *const sourceShortcutDictContent, const int toPos) {
+    bool hasNext = true;
+    int readingPos = shortcutListPos;
+    int writingPos = toPos;
+    int codePoints[MAX_WORD_LENGTH];
+    while (hasNext) {
+        int probability = 0;
+        int codePointCount = 0;
+        sourceShortcutDictContent->getShortcutEntryAndAdvancePosition(MAX_WORD_LENGTH,
+                codePoints, &codePointCount, &probability, &hasNext, &readingPos);
+        if (!writeShortcutEntryAndAdvancePosition(codePoints, codePointCount, probability,
+                hasNext, &writingPos)) {
+            AKLOGE("Cannot write shortcut entry to copy. pos: %d", writingPos);
+            return false;
+        }
+    }
+    return true;
+}
+
+bool ShortcutDictContent::setProbability(const int probability, const int shortcutEntryPos) {
+    BufferWithExtendableBuffer *const shortcutListBuffer = getWritableContentBuffer();
+    const int shortcutFlags = shortcutListBuffer->readUint(
+            Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos);
+    const bool hasNext = shortcutFlags & Ver4DictConstants::SHORTCUT_HAS_NEXT_MASK;
+    const int shortcutFlagsToWrite = createAndGetShortcutFlags(probability, hasNext);
+    return shortcutListBuffer->writeUint(shortcutFlagsToWrite,
+            Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos);
+}
+
+bool ShortcutDictContent::writeShortcutEntryAndAdvancePosition(const int *const codePoint,
+        const int codePointCount, const int probability, const bool hasNext,
+        int *const shortcutEntryPos) {
+    BufferWithExtendableBuffer *const shortcutListBuffer = getWritableContentBuffer();
+    const int shortcutFlags = createAndGetShortcutFlags(probability, hasNext);
+    if (!shortcutListBuffer->writeUintAndAdvancePosition(shortcutFlags,
+            Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos)) {
+        AKLOGE("Cannot write shortcut flags. flags; %x, pos: %d", shortcutFlags, *shortcutEntryPos);
+        return false;
+    }
+    if (!shortcutListBuffer->writeCodePointsAndAdvancePosition(codePoint, codePointCount,
+            true /* writesTerminator */, shortcutEntryPos)) {
+        AKLOGE("Cannot write shortcut target code points. pos: %d", *shortcutEntryPos);
+        return false;
+    }
+    return true;
+}
+
+// Find a shortcut entry that has specified target and return its position.
+int ShortcutDictContent::findShortcutEntryAndGetPos(const int shortcutListPos,
+        const int *const targetCodePointsToFind, const int codePointCount) const {
+    bool hasNext = true;
+    int readingPos = shortcutListPos;
+    int targetCodePoints[MAX_WORD_LENGTH];
+    while (hasNext) {
+        const int entryPos = readingPos;
+        int probability = 0;
+        int targetCodePointCount = 0;
+        getShortcutEntryAndAdvancePosition(MAX_WORD_LENGTH, targetCodePoints, &targetCodePointCount,
+                &probability, &hasNext, &readingPos);
+        if (targetCodePointCount != codePointCount) {
+            continue;
+        }
+        bool matched = true;
+        for (int i = 0; i < codePointCount; ++i) {
+            if (targetCodePointsToFind[i] != targetCodePoints[i]) {
+                matched = false;
+                break;
+            }
+        }
+        if (matched) {
+            return entryPos;
+        }
+    }
+    return NOT_A_DICT_POS;
+}
+
+int ShortcutDictContent::createAndGetShortcutFlags(const int probability,
+        const bool hasNext) const {
+    return (probability & Ver4DictConstants::SHORTCUT_PROBABILITY_MASK)
+            | (hasNext ? Ver4DictConstants::SHORTCUT_HAS_NEXT_MASK : 0);
+}
+
+} // namespace v402
+} // namespace backward
+} // namespace latinime