Implement ver4 shortcut reading method.

Bug: 11073222
Change-Id: I3738c7ce07f500920bde8d3f985cf6e8ecb40b6a

native/jni/src/suggest/policyimpl/dictionary/shortcut/ver4_shortcut_list_policy.h

@@ -0,0 +1,71 @@
+/*
+ * 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_SHORTCUT_LIST_POLICY_H
+#define LATINIME_VER4_SHORTCUT_LIST_POLICY_H
+
+#include <stdint.h>
+
+#include "defines.h"
+#include "suggest/core/policy/dictionary_shortcuts_structure_policy.h"
+#include "suggest/policyimpl/dictionary/shortcut/shortcut_list_reading_utils.h"
+#include "suggest/policyimpl/dictionary/structure/v4/content/shortcut_dict_content.h"
+#include "suggest/policyimpl/dictionary/structure/v4/content/terminal_position_lookup_table.h"
+
+namespace latinime {
+
+class Ver4ShortcutListPolicy : public DictionaryShortcutsStructurePolicy {
+ public:
+    Ver4ShortcutListPolicy(const ShortcutDictContent *const shortcutDictContent,
+            const TerminalPositionLookupTable *const terminalPositionLookupTable)
+            : mShortcutDictContent(shortcutDictContent),
+              mTerminalPositionLookupTable(terminalPositionLookupTable) {}
+
+    ~Ver4ShortcutListPolicy() {}
+
+    int getStartPos(const int pos) const {
+        // The first shortcut entry is located at the head position of the shortcut list.
+        return pos;
+    }
+
+    void getNextShortcut(const int maxCodePointCount, int *const outCodePoint,
+            int *const outCodePointCount, bool *const outIsWhitelist, bool *const outHasNext,
+            int *const pos) const {
+        int shortcutFlags = 0;
+        if (outCodePoint && outCodePointCount) {
+            mShortcutDictContent->getShortcutEntryAndAdvancePosition(maxCodePointCount,
+                    outCodePoint, outCodePointCount, &shortcutFlags, pos);
+        }
+        if (outHasNext) {
+            *outHasNext = ShortcutListReadingUtils::hasNext(shortcutFlags);
+        }
+        if (outIsWhitelist) {
+            *outIsWhitelist = ShortcutListReadingUtils::isWhitelist(shortcutFlags);
+        }
+    }
+
+    void skipAllShortcuts(int *const pos) const {
+        // Do nothing because we don't need to skip shortcut lists in ver4 dictionaries.
+    }
+
+ private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(Ver4ShortcutListPolicy);
+
+    const ShortcutDictContent *const mShortcutDictContent;
+    const TerminalPositionLookupTable *const mTerminalPositionLookupTable;
+};
+} // namespace latinime
+#endif // LATINIME_VER4_SHORTCUT_LIST_POLICY_H

native/jni/src/suggest/policyimpl/dictionary/structure/v4/content/bigram_dict_content.h

@@ -38,7 +38,7 @@ class BigramDictContent : public SparseTableDictContent {
         const BufferWithExtendableBuffer *const bigramListBuffer = getContentBuffer();
         if (outBigramFlags) {
             *outBigramFlags = bigramListBuffer->readUintAndAdvancePosition(
-                    Ver4DictConstants::BIGRAM_FRAGS_FIELD_SIZE, bigramEntryPos);
+                    Ver4DictConstants::BIGRAM_FLAGS_FIELD_SIZE, bigramEntryPos);
         }
         if (outTargetTerminalId) {
             *outTargetTerminalId = bigramListBuffer->readUintAndAdvancePosition(

native/jni/src/suggest/policyimpl/dictionary/structure/v4/content/shortcut_dict_content.h

@@ -0,0 +1,63 @@
+/*
+ * 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_SHORTCUT_DICT_CONTENT_H
+#define LATINIME_SHORTCUT_DICT_CONTENT_H
+
+#include "defines.h"
+#include "suggest/policyimpl/dictionary/structure/v4/content/sparse_table_dict_content.h"
+#include "suggest/policyimpl/dictionary/structure/v4/ver4_dict_constants.h"
+
+namespace latinime {
+
+class ShortcutDictContent : public SparseTableDictContent {
+ public:
+    ShortcutDictContent(const char *const dictDirPath, const bool isUpdatable)
+            : SparseTableDictContent(dictDirPath,
+                      Ver4DictConstants::SHORTCUT_LOOKUP_TABLE_FILE_EXTENSION,
+                      Ver4DictConstants::SHORTCUT_CONTENT_TABLE_FILE_EXTENSION,
+                      Ver4DictConstants::SHORTCUT_FILE_EXTENSION, isUpdatable,
+                      Ver4DictConstants::SHORTCUT_ADDRESS_TABLE_BLOCK_SIZE,
+                      Ver4DictConstants::SHORTCUT_ADDRESS_TABLE_DATA_SIZE) {}
+
+    void getShortcutEntryAndAdvancePosition(const int maxCodePointCount,
+            int *const outCodePoint, int *const outCodePointCount, int *const outShortcutFlags,
+            int *const shortcutEntryPos) const {
+        const BufferWithExtendableBuffer *const shortcutListBuffer = getContentBuffer();
+        if (outShortcutFlags) {
+            *outShortcutFlags = shortcutListBuffer->readUintAndAdvancePosition(
+                    Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE, shortcutEntryPos);
+        }
+        if (outCodePoint && outCodePointCount) {
+            shortcutListBuffer->readCodePointsAndAdvancePosition(
+                    maxCodePointCount, outCodePoint, outCodePointCount, shortcutEntryPos);
+        }
+    }
+
+   // Returns head position of shortcut list for a PtNode specified by terminalId.
+   int getShortcutListHeadPos(const int terminalId) const {
+        const SparseTable *const addressLookupTable = getAddressLookupTable();
+        if (!addressLookupTable->contains(terminalId)) {
+            return NOT_A_DICT_POS;
+        }
+        return addressLookupTable->get(terminalId);
+    }
+
+ private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(ShortcutDictContent);
+};
+} // namespace latinime
+#endif /* LATINIME_SHORTCUT_DICT_CONTENT_H */

native/jni/src/suggest/policyimpl/dictionary/structure/v4/ver4_dict_buffers.h

@@ -21,8 +21,7 @@
 #include "suggest/policyimpl/dictionary/header/header_read_write_utils.h"
 #include "suggest/policyimpl/dictionary/structure/v4/content/bigram_dict_content.h"
 #include "suggest/policyimpl/dictionary/structure/v4/content/probability_dict_content.h"
-#include "suggest/policyimpl/dictionary/structure/v4/content/single_dict_content.h"
+#include "suggest/policyimpl/dictionary/structure/v4/content/shortcut_dict_content.h"
-#include "suggest/policyimpl/dictionary/structure/v4/content/sparse_table_dict_content.h"
 #include "suggest/policyimpl/dictionary/structure/v4/content/terminal_position_lookup_table.h"
 #include "suggest/policyimpl/dictionary/structure/v4/ver4_dict_constants.h"
 #include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
@@ -66,6 +65,10 @@ class Ver4DictBuffers {
         return &mBigramDictContent;
     }
 
+    AK_FORCE_INLINE const ShortcutDictContent *getShortcutDictContent() const {
+        return &mShortcutDictContent;
+    }
+
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(Ver4DictBuffers);
 
@@ -77,18 +80,13 @@ class Ver4DictBuffers {
                       HeaderReadWriteUtils::getHeaderSize(mDictBuffer.get()->getBuffer())),
               mProbabilityDictContent(dictDirPath, isUpdatable),
               mBigramDictContent(dictDirPath, isUpdatable),
-              mShortcutDictContent(dictDirPath,
+              mShortcutDictContent(dictDirPath, isUpdatable) {}
-                      Ver4DictConstants::SHORTCUT_LOOKUP_TABLE_FILE_EXTENSION,
-                      Ver4DictConstants::SHORTCUT_CONTENT_TABLE_FILE_EXTENSION,
-                      Ver4DictConstants::SHORTCUT_FILE_EXTENSION, isUpdatable,
-                      Ver4DictConstants::SHORTCUT_ADDRESS_TABLE_BLOCK_SIZE,
-                      Ver4DictConstants::SHORTCUT_ADDRESS_TABLE_DATA_SIZE) {}
 
     const MmappedBuffer::MmappedBufferPtr mDictBuffer;
     TerminalPositionLookupTable mTerminalPositionLookupTable;
     ProbabilityDictContent mProbabilityDictContent;
     BigramDictContent mBigramDictContent;
-    SparseTableDictContent mShortcutDictContent;
+    ShortcutDictContent mShortcutDictContent;
 };
 } // namespace latinime
 #endif /* LATINIME_VER4_DICT_BUFFER_H */

native/jni/src/suggest/policyimpl/dictionary/structure/v4/ver4_dict_constants.cpp

@@ -41,6 +41,8 @@ const int Ver4DictConstants::SHORTCUT_ADDRESS_TABLE_BLOCK_SIZE = 16;
 const int Ver4DictConstants::SHORTCUT_ADDRESS_TABLE_DATA_SIZE = 4;
 
 const int Ver4DictConstants::BIGRAM_TARGET_TERMINAL_ID_FIELD_SIZE = 3;
-const int Ver4DictConstants::BIGRAM_FRAGS_FIELD_SIZE = 1;
+const int Ver4DictConstants::BIGRAM_FLAGS_FIELD_SIZE = 1;
+
+const int Ver4DictConstants::SHORTCUT_FLAGS_FIELD_SIZE = 1;
 
 } // namespace latinime

native/jni/src/suggest/policyimpl/dictionary/structure/v4/ver4_dict_constants.h

@@ -44,8 +44,11 @@ class Ver4DictConstants {
     static const int SHORTCUT_ADDRESS_TABLE_BLOCK_SIZE;
     static const int SHORTCUT_ADDRESS_TABLE_DATA_SIZE;
 
-    static const int BIGRAM_FRAGS_FIELD_SIZE;
+    static const int BIGRAM_FLAGS_FIELD_SIZE;
     static const int BIGRAM_TARGET_TERMINAL_ID_FIELD_SIZE;
+
+    static const int SHORTCUT_FLAGS_FIELD_SIZE;
+
  private:
     DISALLOW_IMPLICIT_CONSTRUCTORS(Ver4DictConstants);
 };

native/jni/src/suggest/policyimpl/dictionary/structure/v4/ver4_patricia_trie_policy.cpp

@@ -108,7 +108,8 @@ int Ver4PatriciaTriePolicy::getShortcutPositionOfPtNode(const int ptNodePos) con
     if (ptNodeParams.isDeleted()) {
         return NOT_A_DICT_POS;
     }
-    return ptNodeParams.getTerminalId();
+    return mBuffers.get()->getShortcutDictContent()->getShortcutListHeadPos(
+            ptNodeParams.getTerminalId());
 }
 
 int Ver4PatriciaTriePolicy::getBigramsPositionOfPtNode(const int ptNodePos) const {

native/jni/src/suggest/policyimpl/dictionary/structure/v4/ver4_patricia_trie_policy.h

@@ -21,6 +21,7 @@
 #include "suggest/core/policy/dictionary_structure_with_buffer_policy.h"
 #include "suggest/policyimpl/dictionary/bigram/ver4_bigram_list_policy.h"
 #include "suggest/policyimpl/dictionary/header/header_policy.h"
+#include "suggest/policyimpl/dictionary/shortcut/ver4_shortcut_list_policy.h"
 #include "suggest/policyimpl/dictionary/structure/v4/ver4_dict_buffers.h"
 #include "suggest/policyimpl/dictionary/structure/v4/ver4_patricia_trie_node_reader.h"
 #include "suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h"
@@ -41,6 +42,8 @@ class Ver4PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
                       BufferWithExtendableBuffer::DEFAULT_MAX_ADDITIONAL_BUFFER_SIZE),
               mBigramPolicy(mBuffers.get()->getBigramDictContent(),
                       mBuffers.get()->getTerminalPositionLookupTable()),
+              mShortcutPolicy(mBuffers.get()->getShortcutDictContent(),
+                      mBuffers.get()->getTerminalPositionLookupTable()),
               mNodeReader(&mDictBuffer, mBuffers.get()->getProbabilityDictContent()) {};
 
     AK_FORCE_INLINE int getRootPosition() const {
@@ -74,7 +77,7 @@ class Ver4PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
     }
 
     const DictionaryShortcutsStructurePolicy *getShortcutsStructurePolicy() const {
-        return 0;
+        return &mShortcutPolicy;
     }
 
     bool addUnigramWord(const int *const word, const int length, const int probability);
@@ -101,6 +104,7 @@ class Ver4PatriciaTriePolicy : public DictionaryStructureWithBufferPolicy {
     const HeaderPolicy mHeaderPolicy;
     BufferWithExtendableBuffer mDictBuffer;
     const Ver4BigramListPolicy mBigramPolicy;
+    const Ver4ShortcutListPolicy mShortcutPolicy;
     Ver4PatriciaTrieNodeReader mNodeReader;
 };
 } // namespace latinime

native/jni/src/suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.cpp

@@ -36,6 +36,19 @@ uint32_t BufferWithExtendableBuffer::readUintAndAdvancePosition(const int size,
     return value;
 }
 
+void BufferWithExtendableBuffer::readCodePointsAndAdvancePosition(const int maxCodePointCount,
+        int *const outCodePoints, int *outCodePointCount, int *const pos) const {
+    const bool readingPosIsInAdditionalBuffer = isInAdditionalBuffer(*pos);
+    if (readingPosIsInAdditionalBuffer) {
+        *pos -= mOriginalBufferSize;
+    }
+    *outCodePointCount = ByteArrayUtils::readStringAndAdvancePosition(
+            getBuffer(readingPosIsInAdditionalBuffer), maxCodePointCount, outCodePointCount, pos);
+    if (readingPosIsInAdditionalBuffer) {
+        *pos += mOriginalBufferSize;
+    }
+}
+
 bool BufferWithExtendableBuffer::writeUintAndAdvancePosition(const uint32_t data, const int size,
         int *const pos) {
     if (!(size >= 1 && size <= 4)) {
@@ -59,7 +72,7 @@ bool BufferWithExtendableBuffer::writeUintAndAdvancePosition(const uint32_t data
 }
 
 bool BufferWithExtendableBuffer::writeCodePointsAndAdvancePosition(const int *const codePoints,
-        const int codePointCount, const bool writesTerminator ,int *const pos) {
+        const int codePointCount, const bool writesTerminator, int *const pos) {
     const size_t size = ByteArrayUtils::calculateRequiredByteCountToStoreCodePoints(
             codePoints, codePointCount, writesTerminator);
     if (!checkAndPrepareWriting(*pos, size)) {

native/jni/src/suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer.h

@@ -75,6 +75,9 @@ class BufferWithExtendableBuffer {
 
     uint32_t readUintAndAdvancePosition(const int size, int *const pos) const;
 
+    void readCodePointsAndAdvancePosition(const int maxCodePointCount,
+            int *const outCodePoints, int *outCodePointCount, int *const pos) const;
+
     AK_FORCE_INLINE int getOriginalBufferSize() const {
         return mOriginalBufferSize;
     }