Migrate used functions in UnigramDicitonary

Bug: 8550444
Change-Id: Ic1ed2d85537cd47cf18a8373203f331abb7508f6

native/jni/src/suggest/core/dictionary/dictionary.cpp

@@ -22,7 +22,6 @@
 #include <stdint.h>
 
 #include "defines.h"
-#include "obsolete/unigram_dictionary.h"
 #include "suggest/core/dictionary/bigram_dictionary.h"
 #include "suggest/core/dictionary/binary_format.h"
 #include "suggest/core/session/dic_traverse_session.h"
@@ -35,16 +34,15 @@ namespace latinime {
 
 Dictionary::Dictionary(void *dict, int dictSize, int mmapFd, int dictBufAdjust)
         : mBinaryDicitonaryInfo(static_cast<const uint8_t *>(dict), dictSize),
-          mDictSize(dictSize), mMmapFd(mmapFd), mDictBufAdjust(dictBufAdjust),
+          mDictSize(dictSize),
-          mUnigramDictionary(new UnigramDictionary(&mBinaryDicitonaryInfo,
+          mDictFlags(BinaryFormat::getFlags(mBinaryDicitonaryInfo.getDictBuf(), dictSize)),
-                  BinaryFormat::getFlags(mBinaryDicitonaryInfo.getDictBuf(), dictSize))),
+          mMmapFd(mmapFd), mDictBufAdjust(dictBufAdjust),
           mBigramDictionary(new BigramDictionary(&mBinaryDicitonaryInfo)),
           mGestureSuggest(new Suggest(GestureSuggestPolicyFactory::getGestureSuggestPolicy())),
           mTypingSuggest(new Suggest(TypingSuggestPolicyFactory::getTypingSuggestPolicy())) {
 }
 
 Dictionary::~Dictionary() {
-    delete mUnigramDictionary;
     delete mBigramDictionary;
     delete mGestureSuggest;
     delete mTypingSuggest;
@@ -67,7 +65,6 @@ int Dictionary::getSuggestions(ProximityInfo *proximityInfo, DicTraverseSession
         }
         return result;
     } else {
-        if (USE_SUGGEST_INTERFACE_FOR_TYPING) {
         DicTraverseSession::initSessionInstance(
                 traverseSession, this, prevWordCodePoints, prevWordLength, suggestOptions);
         result = mTypingSuggest->getSuggestions(proximityInfo, traverseSession, xcoordinates,
@@ -77,16 +74,6 @@ int Dictionary::getSuggestions(ProximityInfo *proximityInfo, DicTraverseSession
             DUMP_RESULT(outWords, frequencies);
         }
         return result;
-        } else {
-            std::map<int, int> bigramMap;
-            uint8_t bigramFilter[BIGRAM_FILTER_BYTE_SIZE];
-            mBigramDictionary->fillBigramAddressToProbabilityMapAndFilter(prevWordCodePoints,
-                    prevWordLength, &bigramMap, bigramFilter);
-            result = mUnigramDictionary->getSuggestions(proximityInfo, xcoordinates, ycoordinates,
-                    inputCodePoints, inputSize, &bigramMap, bigramFilter,
-                    suggestOptions->useFullEditDistance(), outWords, frequencies, outputTypes);
-            return result;
-        }
     }
 }
 
@@ -98,7 +85,27 @@ int Dictionary::getBigrams(const int *word, int length, int *inputCodePoints, in
 }
 
 int Dictionary::getProbability(const int *word, int length) const {
-    return mUnigramDictionary->getProbability(word, length);
+    const uint8_t *const root = mBinaryDicitonaryInfo.getDictRoot();
+    int pos = BinaryFormat::getTerminalPosition(root, word, length,
+            false /* forceLowerCaseSearch */);
+    if (NOT_VALID_WORD == pos) {
+        return NOT_A_PROBABILITY;
+    }
+    const uint8_t flags = BinaryFormat::getFlagsAndForwardPointer(root, &pos);
+    if (flags & (BinaryFormat::FLAG_IS_BLACKLISTED | BinaryFormat::FLAG_IS_NOT_A_WORD)) {
+        // If this is not a word, or if it's a blacklisted entry, it should behave as
+        // having no probability outside of the suggestion process (where it should be used
+        // for shortcuts).
+        return NOT_A_PROBABILITY;
+    }
+    const bool hasMultipleChars = (0 != (BinaryFormat::FLAG_HAS_MULTIPLE_CHARS & flags));
+    if (hasMultipleChars) {
+        pos = BinaryFormat::skipOtherCharacters(root, pos);
+    } else {
+        BinaryFormat::getCodePointAndForwardPointer(root, &pos);
+    }
+    const int unigramProbability = BinaryFormat::readProbabilityWithoutMovingPointer(root, pos);
+    return unigramProbability;
 }
 
 bool Dictionary::isValidBigram(const int *word1, int length1, const int *word2, int length2) const {
@@ -106,7 +113,7 @@ bool Dictionary::isValidBigram(const int *word1, int length1, const int *word2,
 }
 
 int Dictionary::getDictFlags() const {
-    return mUnigramDictionary->getDictFlags();
+    return mDictFlags;
 }
 
 } // namespace latinime

native/jni/src/suggest/core/dictionary/dictionary.h

@@ -29,7 +29,6 @@ class DicTraverseSession;
 class ProximityInfo;
 class SuggestInterface;
 class SuggestOptions;
-class UnigramDictionary;
 
 class Dictionary {
  public:
@@ -82,10 +81,10 @@ class Dictionary {
     // Used only for the mmap version of dictionary loading, but we use these as dummy variables
     // also for the malloc version.
     const int mDictSize;
+    const int mDictFlags;
     const int mMmapFd;
     const int mDictBufAdjust;
 
-    const UnigramDictionary *mUnigramDictionary;
     const BigramDictionary *mBigramDictionary;
     SuggestInterface *mGestureSuggest;
     SuggestInterface *mTypingSuggest;