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Add firstOrDefault and lastOrDefault to IntArrayView.

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Change-Id: I854c02eff3fa0b53c72a5f1cabce001f4854ada0
This commit is contained in:
Keisuke Kuroyanagi 2014-09-17 21:16:31 +09:00
parent e69266638f
commit 09c154925f
4 changed files with 37 additions and 3 deletions
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2
native/jni/src/suggest/policyimpl/dictionary/structure/backward/v402/ver4_patricia_trie_policy.cpp
View File

@ -397,7 +397,7 @@ bool Ver4PatriciaTriePolicy::removeNgramEntry(const PrevWordsInfo *const prevWor
WordIdArray<MAX_PREV_WORD_COUNT_FOR_N_GRAM> prevWordIdArray;
const WordIdArrayView prevWordIds = prevWordsInfo->getPrevWordIds(this, &prevWordIdArray,
false /* tryLowerCaseSerch */);
if (prevWordIds.empty() || prevWordIds[0] == NOT_A_WORD_ID) {
if (prevWordIds.firstOrDefault(NOT_A_WORD_ID) == NOT_A_WORD_ID) {
return false;
}
const int wordPos = getTerminalPtNodePosFromWordId(getWordId(wordCodePoints,

4
native/jni/src/suggest/policyimpl/dictionary/structure/v4/content/language_model_dict_content.cpp
View File

@ -167,7 +167,7 @@ int LanguageModelDictContent::createAndGetBitmapEntryIndex(const WordIdArrayView
if (lastBitmapEntryIndex == TrieMap::INVALID_INDEX) {
return TrieMap::INVALID_INDEX;
}
const int oldestPrevWordId = prevWordIds[prevWordIds.size() - 1];
const int oldestPrevWordId = prevWordIds.lastOrDefault(NOT_A_WORD_ID);
const TrieMap::Result result = mTrieMap.get(oldestPrevWordId, lastBitmapEntryIndex);
if (!result.mIsValid) {
if (!mTrieMap.put(oldestPrevWordId,
@ -175,7 +175,7 @@ int LanguageModelDictContent::createAndGetBitmapEntryIndex(const WordIdArrayView
return TrieMap::INVALID_INDEX;
}
}
return mTrieMap.getNextLevelBitmapEntryIndex(prevWordIds[prevWordIds.size() - 1],
return mTrieMap.getNextLevelBitmapEntryIndex(prevWordIds.lastOrDefault(NOT_A_WORD_ID),
lastBitmapEntryIndex);
}

14
native/jni/src/utils/int_array_view.h
View File

@ -115,6 +115,20 @@ class IntArrayView {
memmove(buffer->data() + offset, mPtr, sizeof(int) * mSize);
}
AK_FORCE_INLINE int firstOrDefault(const int defaultValue) const {
if (empty()) {
return defaultValue;
}
return mPtr[0];
}
AK_FORCE_INLINE int lastOrDefault(const int defaultValue) const {
if (empty()) {
return defaultValue;
}
return mPtr[mSize - 1];
}
private:
DISALLOW_ASSIGNMENT_OPERATOR(IntArrayView);

20
native/jni/tests/utils/int_array_view_test.cpp
View File

@ -124,5 +124,25 @@ TEST(IntArrayViewTest, TestCopyToArray) {
EXPECT_EQ(70, buffer[6]);
}
TEST(IntArrayViewTest, TestFirstOrDefault) {
const std::vector<int> intVector = {3, 2, 1, 0, -1, -2};
IntArrayView intArrayView(intVector);
EXPECT_EQ(3, intArrayView.firstOrDefault(10));
EXPECT_EQ(10, intArrayView.limit(0).firstOrDefault(10));
EXPECT_EQ(-10, intArrayView.limit(0).firstOrDefault(-10));
EXPECT_EQ(10, intArrayView.skip(6).firstOrDefault(10));
}
TEST(IntArrayViewTest, TestLastOrDefault) {
const std::vector<int> intVector = {3, 2, 1, 0, -1, -2};
IntArrayView intArrayView(intVector);
EXPECT_EQ(-2, intArrayView.lastOrDefault(10));
EXPECT_EQ(10, intArrayView.limit(0).lastOrDefault(10));
EXPECT_EQ(-10, intArrayView.limit(0).lastOrDefault(-10));
EXPECT_EQ(10, intArrayView.skip(6).lastOrDefault(10));
}
} // namespace
} // namespace latinime