Merge "Add memory view class for int and uint8_t." into lmp-dev

main
Keisuke Kuroyanagi 2014-08-01 06:17:23 +00:00 committed by Android (Google) Code Review
commit 211370a3da
4 changed files with 202 additions and 1 deletions

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@ -127,4 +127,5 @@ LATIN_IME_CORE_TEST_FILES := \
suggest/core/dictionary/bloom_filter_test.cpp \
suggest/policyimpl/dictionary/utils/buffer_with_extendable_buffer_test.cpp \
suggest/policyimpl/dictionary/utils/trie_map_test.cpp \
utils/autocorrection_threshold_utils_test.cpp
utils/autocorrection_threshold_utils_test.cpp \
utils/int_array_view_test.cpp

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@ -0,0 +1,82 @@
/*
* Copyright (C) 2014 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_BYTE_ARRAY_VIEW_H
#define LATINIME_BYTE_ARRAY_VIEW_H
#include <cstdint>
#include <cstdlib>
#include "defines.h"
namespace latinime {
/**
* Helper class used to keep track of read accesses for a given memory region.
*/
class ReadOnlyByteArrayView {
public:
ReadOnlyByteArrayView() : mPtr(nullptr), mSize(0) {}
ReadOnlyByteArrayView(const uint8_t *const ptr, const size_t size)
: mPtr(ptr), mSize(size) {}
AK_FORCE_INLINE size_t size() const {
return mSize;
}
AK_FORCE_INLINE const uint8_t *data() const {
return mPtr;
}
private:
DISALLOW_ASSIGNMENT_OPERATOR(ReadOnlyByteArrayView);
const uint8_t *const mPtr;
const size_t mSize;
};
/**
* Helper class used to keep track of read-write accesses for a given memory region.
*/
class ReadWriteByteArrayView {
public:
ReadWriteByteArrayView() : mPtr(nullptr), mSize(0) {}
ReadWriteByteArrayView(uint8_t *const ptr, const size_t size)
: mPtr(ptr), mSize(size) {}
AK_FORCE_INLINE size_t size() const {
return mSize;
}
AK_FORCE_INLINE uint8_t *data() const {
return mPtr;
}
AK_FORCE_INLINE ReadOnlyByteArrayView getReadOnlyView() const {
return ReadOnlyByteArrayView(mPtr, mSize);
}
private:
DISALLOW_ASSIGNMENT_OPERATOR(ReadWriteByteArrayView);
uint8_t *const mPtr;
const size_t mSize;
};
} // namespace latinime
#endif // LATINIME_BYTE_ARRAY_VIEW_H

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@ -0,0 +1,80 @@
/*
* Copyright (C) 2014 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_INT_ARRAY_VIEW_H
#define LATINIME_INT_ARRAY_VIEW_H
#include <cstdint>
#include <cstdlib>
#include <vector>
#include "defines.h"
namespace latinime {
/**
* Helper class used to provide a read-only view of a given range of integer array. This class
* does not take ownership of the underlying integer array but is designed to be a lightweight
* object that obeys value semantics.
*
* Example:
* <code>
* bool constinsX(IntArrayView view) {
* for (size_t i = 0; i < view.size(); ++i) {
* if (view[i] == 'X') {
* return true;
* }
* }
* return false;
* }
*
* const int codePointArray[] = { 'A', 'B', 'X', 'Z' };
* auto view = IntArrayView(codePointArray, NELEMS(codePointArray));
* const bool hasX = constinsX(view);
* </code>
*/
class IntArrayView {
public:
IntArrayView() : mPtr(nullptr), mSize(0) {}
IntArrayView(const int *const ptr, const size_t size)
: mPtr(ptr), mSize(size) {}
explicit IntArrayView(const std::vector<int> &vector)
: mPtr(vector.data()), mSize(vector.size()) {}
AK_FORCE_INLINE int operator[](const size_t index) const {
ASSERT(index < mSize);
return mPtr[index];
}
AK_FORCE_INLINE size_t size() const {
return mSize;
}
AK_FORCE_INLINE const int *data() const {
return mPtr;
}
private:
DISALLOW_ASSIGNMENT_OPERATOR(IntArrayView);
const int *const mPtr;
const size_t mSize;
};
} // namespace latinime
#endif // LATINIME_MEMORY_VIEW_H

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@ -0,0 +1,38 @@
/*
* Copyright (C) 2014 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 "utils/int_array_view.h"
#include <gtest/gtest.h>
#include <vector>
namespace latinime {
namespace {
TEST(MemoryViewTest, TestAccess) {
static const int DATA_SIZE = 10000;
std::vector<int> intVector = {3, 2, 1, 0, -1, -2};
IntArrayView intArrayView(intVector);
EXPECT_EQ(intVector.size(), intArrayView.size());
for (int i = 0; i < DATA_SIZE; ++i) {
EXPECT_EQ(intVector[i], intArrayView[i]);
}
}
} // namespace
} // namespace latinime