Add spellcheck and word suggestion to the prediction service

third_party/prediction/utils/byte_array_view.h

+/*
+ * 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 "third_party/prediction/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);
+  }
+
+  ReadWriteByteArrayView subView(const size_t start, const size_t n) const {
+    ASSERT(start + n <= mSize);
+    return ReadWriteByteArrayView(mPtr + start, n);
+  }
+
+ private:
+  DISALLOW_ASSIGNMENT_OPERATOR(ReadWriteByteArrayView);
+
+  uint8_t* const mPtr;
+  const size_t mSize;
+};
+
+}  // namespace latinime
+#endif  // LATINIME_BYTE_ARRAY_VIEW_H