Add spellcheck and word suggestion to the prediction service

third_party/android_prediction/suggest/core/layout/additional_proximity_chars.h

Index: third_party/android_prediction/suggest/core/layout/additional_proximity_chars.h
diff --git a/third_party/android_prediction/suggest/core/layout/additional_proximity_chars.h b/third_party/android_prediction/suggest/core/layout/additional_proximity_chars.h
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index 0000000000000000000000000000000000000000..db95e9f5697d90f09f887fdc890422b5103b6a80
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+++ b/third_party/android_prediction/suggest/core/layout/additional_proximity_chars.h
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+/*
+ * Copyright (C) 2012 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_ADDITIONAL_PROXIMITY_CHARS_H
+#define LATINIME_ADDITIONAL_PROXIMITY_CHARS_H
+
+#include <cstring>
+
+#include "third_party/android_prediction/defines.h"
+
+namespace latinime {
+
+class AdditionalProximityChars {
+ private:
+    DISALLOW_IMPLICIT_CONSTRUCTORS(AdditionalProximityChars);
+    static const char *LOCALE_EN_US;
+    static const int EN_US_ADDITIONAL_A_SIZE = 4;
+    static const int EN_US_ADDITIONAL_A[];
+    static const int EN_US_ADDITIONAL_E_SIZE = 4;
+    static const int EN_US_ADDITIONAL_E[];
+    static const int EN_US_ADDITIONAL_I_SIZE = 4;
+    static const int EN_US_ADDITIONAL_I[];
+    static const int EN_US_ADDITIONAL_O_SIZE = 4;
+    static const int EN_US_ADDITIONAL_O[];
+    static const int EN_US_ADDITIONAL_U_SIZE = 4;
+    static const int EN_US_ADDITIONAL_U[];
+
+    AK_FORCE_INLINE static bool isEnLocale(const char *localeStr) {
+        const size_t LOCALE_EN_US_SIZE = strlen(LOCALE_EN_US);
+        return localeStr && strlen(localeStr) >= LOCALE_EN_US_SIZE
+                && strncmp(localeStr, LOCALE_EN_US, LOCALE_EN_US_SIZE) == 0;
+    }
+
+ public:
+    static int getAdditionalCharsSize(const char *const localeStr, const int c) {
+        if (!isEnLocale(localeStr)) {
+            return 0;
+        }
+        switch (c) {
+        case 'a':
+            return EN_US_ADDITIONAL_A_SIZE;
+        case 'e':
+            return EN_US_ADDITIONAL_E_SIZE;
+        case 'i':
+            return EN_US_ADDITIONAL_I_SIZE;
+        case 'o':
+            return EN_US_ADDITIONAL_O_SIZE;
+        case 'u':
+            return EN_US_ADDITIONAL_U_SIZE;
+        default:
+            return 0;
+        }
+    }
+
+    static const int *getAdditionalChars(const char *const localeStr, const int c) {
+        if (!isEnLocale(localeStr)) {
+            return 0;
+        }
+        switch (c) {
+        case 'a':
+            return EN_US_ADDITIONAL_A;
+        case 'e':
+            return EN_US_ADDITIONAL_E;
+        case 'i':
+            return EN_US_ADDITIONAL_I;
+        case 'o':
+            return EN_US_ADDITIONAL_O;
+        case 'u':
+            return EN_US_ADDITIONAL_U;
+        default:
+            return 0;
+        }
+    }
+};
+} // namespace latinime
+#endif // LATINIME_ADDITIONAL_PROXIMITY_CHARS_H