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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #ifndef LATINIME_DEFINES_H
     18 #define LATINIME_DEFINES_H
     19 
     20 #ifdef __GNUC__
     21 #define AK_FORCE_INLINE __attribute__((always_inline)) __inline__
     22 #else // __GNUC__
     23 #define AK_FORCE_INLINE inline
     24 #endif // __GNUC__
     25 
     26 #if defined(FLAG_DO_PROFILE) || defined(FLAG_DBG)
     27 #undef AK_FORCE_INLINE
     28 #define AK_FORCE_INLINE inline
     29 #endif // defined(FLAG_DO_PROFILE) || defined(FLAG_DBG)
     30 
     31 // Must be equal to Constants.Dictionary.MAX_WORD_LENGTH in Java
     32 #define MAX_WORD_LENGTH 48
     33 // Must be equal to BinaryDictionary.MAX_RESULTS in Java
     34 #define MAX_RESULTS 18
     35 // Must be equal to ProximityInfo.MAX_PROXIMITY_CHARS_SIZE in Java
     36 #define MAX_PROXIMITY_CHARS_SIZE 16
     37 #define ADDITIONAL_PROXIMITY_CHAR_DELIMITER_CODE 2
     38 #define NELEMS(x) (sizeof(x) / sizeof((x)[0]))
     39 
     40 AK_FORCE_INLINE static int intArrayToCharArray(const int *const source, const int sourceSize,
     41         char *dest, const int destSize) {
     42     // We want to always terminate with a 0 char, so stop one short of the length to make
     43     // sure there is room.
     44     const int destLimit = destSize - 1;
     45     int si = 0;
     46     int di = 0;
     47     while (si < sourceSize && di < destLimit && 0 != source[si]) {
     48         const int codePoint = source[si++];
     49         if (codePoint < 0x7F) { // One byte
     50             dest[di++] = codePoint;
     51         } else if (codePoint < 0x7FF) { // Two bytes
     52             if (di + 1 >= destLimit) break;
     53             dest[di++] = 0xC0 + (codePoint >> 6);
     54             dest[di++] = 0x80 + (codePoint & 0x3F);
     55         } else if (codePoint < 0xFFFF) { // Three bytes
     56             if (di + 2 >= destLimit) break;
     57             dest[di++] = 0xE0 + (codePoint >> 12);
     58             dest[di++] = 0x80 + ((codePoint >> 6) & 0x3F);
     59             dest[di++] = 0x80 + (codePoint & 0x3F);
     60         } else if (codePoint <= 0x1FFFFF) { // Four bytes
     61             if (di + 3 >= destLimit) break;
     62             dest[di++] = 0xF0 + (codePoint >> 18);
     63             dest[di++] = 0x80 + ((codePoint >> 12) & 0x3F);
     64             dest[di++] = 0x80 + ((codePoint >> 6) & 0x3F);
     65             dest[di++] = 0x80 + (codePoint & 0x3F);
     66         } else if (codePoint <= 0x3FFFFFF) { // Five bytes
     67             if (di + 4 >= destLimit) break;
     68             dest[di++] = 0xF8 + (codePoint >> 24);
     69             dest[di++] = 0x80 + ((codePoint >> 18) & 0x3F);
     70             dest[di++] = 0x80 + ((codePoint >> 12) & 0x3F);
     71             dest[di++] = 0x80 + ((codePoint >> 6) & 0x3F);
     72             dest[di++] = codePoint & 0x3F;
     73         } else if (codePoint <= 0x7FFFFFFF) { // Six bytes
     74             if (di + 5 >= destLimit) break;
     75             dest[di++] = 0xFC + (codePoint >> 30);
     76             dest[di++] = 0x80 + ((codePoint >> 24) & 0x3F);
     77             dest[di++] = 0x80 + ((codePoint >> 18) & 0x3F);
     78             dest[di++] = 0x80 + ((codePoint >> 12) & 0x3F);
     79             dest[di++] = 0x80 + ((codePoint >> 6) & 0x3F);
     80             dest[di++] = codePoint & 0x3F;
     81         } else {
     82             // Not a code point... skip.
     83         }
     84     }
     85     dest[di] = 0;
     86     return di;
     87 }
     88 
     89 #if defined(FLAG_DO_PROFILE) || defined(FLAG_DBG)
     90 #include <android/log.h>
     91 #ifndef LOG_TAG
     92 #define LOG_TAG "LatinIME: "
     93 #endif // LOG_TAG
     94 #define AKLOGE(fmt, ...) __android_log_print(ANDROID_LOG_ERROR, LOG_TAG, fmt, ##__VA_ARGS__)
     95 #define AKLOGI(fmt, ...) __android_log_print(ANDROID_LOG_INFO, LOG_TAG, fmt, ##__VA_ARGS__)
     96 
     97 #define DUMP_RESULT(words, frequencies) do { dumpResult(words, frequencies); } while (0)
     98 #define DUMP_WORD(word, length) do { dumpWord(word, length); } while (0)
     99 #define INTS_TO_CHARS(input, length, output, outlength) do { \
    100         intArrayToCharArray(input, length, output, outlength); } while (0)
    101 
    102 static inline void dumpWordInfo(const int *word, const int length, const int rank,
    103         const int probability) {
    104     static char charBuf[50];
    105     const int N = intArrayToCharArray(word, length, charBuf, NELEMS(charBuf));
    106     if (N > 1) {
    107         AKLOGI("%2d [ %s ] (%d)", rank, charBuf, probability);
    108     }
    109 }
    110 
    111 static inline void dumpResult(const int *outWords, const int *frequencies) {
    112     AKLOGI("--- DUMP RESULT ---------");
    113     for (int i = 0; i < MAX_RESULTS; ++i) {
    114         dumpWordInfo(&outWords[i * MAX_WORD_LENGTH], MAX_WORD_LENGTH, i, frequencies[i]);
    115     }
    116     AKLOGI("-------------------------");
    117 }
    118 
    119 static AK_FORCE_INLINE void dumpWord(const int *word, const int length) {
    120     static char charBuf[50];
    121     const int N = intArrayToCharArray(word, length, charBuf, NELEMS(charBuf));
    122     if (N > 1) {
    123         AKLOGI("[ %s ]", charBuf);
    124     }
    125 }
    126 
    127 #ifndef __ANDROID__
    128 #include <cassert>
    129 #include <execinfo.h>
    130 #include <stdlib.h>
    131 
    132 #define DO_ASSERT_TEST
    133 #define ASSERT(success) do { if (!(success)) { showStackTrace(); assert(success);} } while (0)
    134 #define SHOW_STACK_TRACE do { showStackTrace(); } while (0)
    135 
    136 static inline void showStackTrace() {
    137     void *callstack[128];
    138     int i, frames = backtrace(callstack, 128);
    139     char **strs = backtrace_symbols(callstack, frames);
    140     for (i = 0; i < frames; ++i) {
    141         if (i == 0) {
    142             AKLOGI("=== Trace ===");
    143             continue;
    144         }
    145         AKLOGI("%s", strs[i]);
    146     }
    147     free(strs);
    148 }
    149 #else // __ANDROID__
    150 #include <cassert>
    151 #define DO_ASSERT_TEST
    152 #define ASSERT(success) assert(success)
    153 #define SHOW_STACK_TRACE
    154 #endif // __ANDROID__
    155 
    156 #else // defined(FLAG_DO_PROFILE) || defined(FLAG_DBG)
    157 #define AKLOGE(fmt, ...)
    158 #define AKLOGI(fmt, ...)
    159 #define DUMP_RESULT(words, frequencies)
    160 #define DUMP_WORD(word, length)
    161 #undef DO_ASSERT_TEST
    162 #define ASSERT(success)
    163 #define SHOW_STACK_TRACE
    164 #define INTS_TO_CHARS(input, length, output)
    165 #endif // defined(FLAG_DO_PROFILE) || defined(FLAG_DBG)
    166 
    167 #ifdef FLAG_DO_PROFILE
    168 // Profiler
    169 #include <time.h>
    170 
    171 #define PROF_BUF_SIZE 100
    172 static float profile_buf[PROF_BUF_SIZE];
    173 static float profile_old[PROF_BUF_SIZE];
    174 static unsigned int profile_counter[PROF_BUF_SIZE];
    175 
    176 #define PROF_RESET               prof_reset()
    177 #define PROF_COUNT(prof_buf_id)  ++profile_counter[prof_buf_id]
    178 #define PROF_OPEN                do { PROF_RESET; PROF_START(PROF_BUF_SIZE - 1); } while (0)
    179 #define PROF_START(prof_buf_id)  do { \
    180         PROF_COUNT(prof_buf_id); profile_old[prof_buf_id] = (clock()); } while (0)
    181 #define PROF_CLOSE               do { PROF_END(PROF_BUF_SIZE - 1); PROF_OUTALL; } while (0)
    182 #define PROF_END(prof_buf_id)    profile_buf[prof_buf_id] += ((clock()) - profile_old[prof_buf_id])
    183 #define PROF_CLOCKOUT(prof_buf_id) \
    184         AKLOGI("%s : clock is %f", __FUNCTION__, (clock() - profile_old[prof_buf_id]))
    185 #define PROF_OUTALL              do { AKLOGI("--- %s ---", __FUNCTION__); prof_out(); } while (0)
    186 
    187 static inline void prof_reset(void) {
    188     for (int i = 0; i < PROF_BUF_SIZE; ++i) {
    189         profile_buf[i] = 0;
    190         profile_old[i] = 0;
    191         profile_counter[i] = 0;
    192     }
    193 }
    194 
    195 static inline void prof_out(void) {
    196     if (profile_counter[PROF_BUF_SIZE - 1] != 1) {
    197         AKLOGI("Error: You must call PROF_OPEN before PROF_CLOSE.");
    198     }
    199     AKLOGI("Total time is %6.3f ms.",
    200             profile_buf[PROF_BUF_SIZE - 1] * 1000.0f / static_cast<float>(CLOCKS_PER_SEC));
    201     float all = 0.0f;
    202     for (int i = 0; i < PROF_BUF_SIZE - 1; ++i) {
    203         all += profile_buf[i];
    204     }
    205     if (all < 1.0f) all = 1.0f;
    206     for (int i = 0; i < PROF_BUF_SIZE - 1; ++i) {
    207         if (profile_buf[i] > 0.0f) {
    208             AKLOGI("(%d): Used %4.2f%%, %8.4f ms. Called %d times.",
    209                     i, (profile_buf[i] * 100.0f / all),
    210                     profile_buf[i] * 1000.0f / static_cast<float>(CLOCKS_PER_SEC),
    211                     profile_counter[i]);
    212         }
    213     }
    214 }
    215 
    216 #else // FLAG_DO_PROFILE
    217 #define PROF_BUF_SIZE 0
    218 #define PROF_RESET
    219 #define PROF_COUNT(prof_buf_id)
    220 #define PROF_OPEN
    221 #define PROF_START(prof_buf_id)
    222 #define PROF_CLOSE
    223 #define PROF_END(prof_buf_id)
    224 #define PROF_CLOCK_OUT(prof_buf_id)
    225 #define PROF_CLOCKOUT(prof_buf_id)
    226 #define PROF_OUTALL
    227 
    228 #endif // FLAG_DO_PROFILE
    229 
    230 #ifdef FLAG_DBG
    231 #define DEBUG_DICT true
    232 #define DEBUG_DICT_FULL false
    233 #define DEBUG_EDIT_DISTANCE false
    234 #define DEBUG_NODE DEBUG_DICT_FULL
    235 #define DEBUG_TRACE DEBUG_DICT_FULL
    236 #define DEBUG_PROXIMITY_INFO false
    237 #define DEBUG_PROXIMITY_CHARS false
    238 #define DEBUG_CORRECTION false
    239 #define DEBUG_CORRECTION_FREQ false
    240 #define DEBUG_SAMPLING_POINTS false
    241 #define DEBUG_POINTS_PROBABILITY false
    242 #define DEBUG_DOUBLE_LETTER false
    243 #define DEBUG_CACHE false
    244 #define DEBUG_DUMP_ERROR false
    245 #define DEBUG_EVALUATE_MOST_PROBABLE_STRING false
    246 
    247 #ifdef FLAG_FULL_DBG
    248 #define DEBUG_GEO_FULL true
    249 #else
    250 #define DEBUG_GEO_FULL false
    251 #endif
    252 
    253 #else // FLAG_DBG
    254 
    255 #define DEBUG_DICT false
    256 #define DEBUG_DICT_FULL false
    257 #define DEBUG_EDIT_DISTANCE false
    258 #define DEBUG_NODE false
    259 #define DEBUG_TRACE false
    260 #define DEBUG_PROXIMITY_INFO false
    261 #define DEBUG_PROXIMITY_CHARS false
    262 #define DEBUG_CORRECTION false
    263 #define DEBUG_CORRECTION_FREQ false
    264 #define DEBUG_SAMPLING_POINTS false
    265 #define DEBUG_POINTS_PROBABILITY false
    266 #define DEBUG_DOUBLE_LETTER false
    267 #define DEBUG_CACHE false
    268 #define DEBUG_DUMP_ERROR false
    269 #define DEBUG_EVALUATE_MOST_PROBABLE_STRING false
    270 
    271 #define DEBUG_GEO_FULL false
    272 
    273 #endif // FLAG_DBG
    274 
    275 #ifndef S_INT_MAX
    276 #define S_INT_MAX 2147483647 // ((1 << 31) - 1)
    277 #endif
    278 #ifndef S_INT_MIN
    279 // The literal constant -2147483648 does not work in C prior C90, because
    280 // the compiler tries to fit the positive number into an int and then negate it.
    281 // GCC warns about this.
    282 #define S_INT_MIN (-2147483647 - 1) // -(1 << 31)
    283 #endif
    284 
    285 #define M_PI_F 3.14159265f
    286 #define MAX_PERCENTILE 100
    287 
    288 // Number of base-10 digits in the largest integer + 1 to leave room for a zero terminator.
    289 // As such, this is the maximum number of characters will be needed to represent an int as a
    290 // string, including the terminator; this is used as the size of a string buffer large enough to
    291 // hold any value that is intended to fit in an integer, e.g. in the code that reads the header
    292 // of the binary dictionary where a {key,value} string pair scheme is used.
    293 #define LARGEST_INT_DIGIT_COUNT 11
    294 
    295 #define NOT_A_CODE_POINT (-1)
    296 #define NOT_A_DISTANCE (-1)
    297 #define NOT_A_COORDINATE (-1)
    298 #define NOT_AN_INDEX (-1)
    299 #define NOT_A_PROBABILITY (-1)
    300 #define NOT_A_DICT_POS (S_INT_MIN)
    301 
    302 // A special value to mean the first word confidence makes no sense in this case,
    303 // e.g. this is not a multi-word suggestion.
    304 #define NOT_A_FIRST_WORD_CONFIDENCE (S_INT_MAX)
    305 // How high the confidence needs to be for us to auto-commit. Arbitrary.
    306 // This needs to be the same as CONFIDENCE_FOR_AUTO_COMMIT in BinaryDictionary.java
    307 #define CONFIDENCE_FOR_AUTO_COMMIT (1000000)
    308 // 80% of the full confidence
    309 #define DISTANCE_WEIGHT_FOR_AUTO_COMMIT (80 * CONFIDENCE_FOR_AUTO_COMMIT / 100)
    310 // 100% of the full confidence
    311 #define LENGTH_WEIGHT_FOR_AUTO_COMMIT (CONFIDENCE_FOR_AUTO_COMMIT)
    312 // 80% of the full confidence
    313 #define SPACE_COUNT_WEIGHT_FOR_AUTO_COMMIT (80 * CONFIDENCE_FOR_AUTO_COMMIT / 100)
    314 
    315 #define KEYCODE_SPACE ' '
    316 #define KEYCODE_SINGLE_QUOTE '\''
    317 #define KEYCODE_HYPHEN_MINUS '-'
    318 
    319 #define SUGGEST_INTERFACE_OUTPUT_SCALE 1000000.0f
    320 #define MAX_PROBABILITY 255
    321 #define MAX_BIGRAM_ENCODED_PROBABILITY 15
    322 
    323 // Assuming locale strings such as en_US, sr-Latn etc.
    324 #define MAX_LOCALE_STRING_LENGTH 10
    325 
    326 // Max value for length, distance and probability which are used in weighting
    327 // TODO: Remove
    328 #define MAX_VALUE_FOR_WEIGHTING 10000000
    329 
    330 // The max number of the keys in one keyboard layout
    331 #define MAX_KEY_COUNT_IN_A_KEYBOARD 64
    332 
    333 // TODO: Remove
    334 #define MAX_POINTER_COUNT 1
    335 #define MAX_POINTER_COUNT_G 2
    336 
    337 template<typename T> AK_FORCE_INLINE const T &min(const T &a, const T &b) { return a < b ? a : b; }
    338 template<typename T> AK_FORCE_INLINE const T &max(const T &a, const T &b) { return a > b ? a : b; }
    339 
    340 // DEBUG
    341 #define INPUTLENGTH_FOR_DEBUG (-1)
    342 #define MIN_OUTPUT_INDEX_FOR_DEBUG (-1)
    343 
    344 #define DISALLOW_COPY_AND_ASSIGN(TypeName) \
    345   TypeName(const TypeName&);               \
    346   void operator=(const TypeName&)
    347 
    348 #define DISALLOW_IMPLICIT_CONSTRUCTORS(TypeName) \
    349   TypeName();                                    \
    350   DISALLOW_COPY_AND_ASSIGN(TypeName)
    351 
    352 // Used as a return value for character comparison
    353 typedef enum {
    354     // Same char, possibly with different case or accent
    355     MATCH_CHAR,
    356     // It is a char located nearby on the keyboard
    357     PROXIMITY_CHAR,
    358     // Additional proximity char which can differ by language.
    359     ADDITIONAL_PROXIMITY_CHAR,
    360     // It is a substitution char
    361     SUBSTITUTION_CHAR,
    362     // It is an unrelated char
    363     UNRELATED_CHAR,
    364 } ProximityType;
    365 
    366 typedef enum {
    367     NOT_A_DOUBLE_LETTER,
    368     A_DOUBLE_LETTER,
    369     A_STRONG_DOUBLE_LETTER
    370 } DoubleLetterLevel;
    371 
    372 typedef enum {
    373     // Correction for MATCH_CHAR
    374     CT_MATCH,
    375     // Correction for PROXIMITY_CHAR
    376     CT_PROXIMITY,
    377     // Correction for ADDITIONAL_PROXIMITY_CHAR
    378     CT_ADDITIONAL_PROXIMITY,
    379     // Correction for SUBSTITUTION_CHAR
    380     CT_SUBSTITUTION,
    381     // Skip one omitted letter
    382     CT_OMISSION,
    383     // Delete an unnecessarily inserted letter
    384     CT_INSERTION,
    385     // Swap the order of next two touch points
    386     CT_TRANSPOSITION,
    387     CT_COMPLETION,
    388     CT_TERMINAL,
    389     CT_TERMINAL_INSERTION,
    390     // Create new word with space omission
    391     CT_NEW_WORD_SPACE_OMISSION,
    392     // Create new word with space substitution
    393     CT_NEW_WORD_SPACE_SUBSTITUTION,
    394 } CorrectionType;
    395 
    396 // ErrorType is mainly decided by CorrectionType but it is also depending on if
    397 // the correction has really been performed or not.
    398 typedef enum {
    399     // Substitution, omission and transposition
    400     ET_EDIT_CORRECTION,
    401     // Proximity error
    402     ET_PROXIMITY_CORRECTION,
    403     // Completion
    404     ET_COMPLETION,
    405     // New word
    406     // TODO: Remove.
    407     // A new word error should be an edit correction error or a proximity correction error.
    408     ET_NEW_WORD,
    409     // Treat error as an intentional omission when the CorrectionType is omission and the node can
    410     // be intentional omission.
    411     ET_INTENTIONAL_OMISSION,
    412     // Not treated as an error. Tracked for checking exact match
    413     ET_NOT_AN_ERROR
    414 } ErrorType;
    415 #endif // LATINIME_DEFINES_H
    416