src/yaml_private.h

   1
   2 #if HAVE_CONFIG_H
   3 #include <config.h>
   4 #endif
   5
   6 #include <yaml.h>
   7
   8 #include <assert.h>
   9 #include <limits.h>
  10 #include <stddef.h>
  11 #include <stdint.h>
  12
  13 /*
  14  * Memory management.
  15  */
  16
  17 YAML_DECLARE(void *)
  18 yaml_malloc(size_t size);
  19
  20 YAML_DECLARE(void *)
  21 yaml_realloc(void *ptr, size_t size);
  22
  23 YAML_DECLARE(void)
  24 yaml_free(void *ptr);
  25
  26 YAML_DECLARE(yaml_char_t *)
  27 yaml_strdup(const yaml_char_t *);
  28
  29 /*
  30  * Reader: Ensure that the buffer contains at least `length` characters.
  31  */
  32
  33 YAML_DECLARE(int)
  34 yaml_parser_update_buffer(yaml_parser_t *parser, size_t length);
  35
  36 /*
  37  * Scanner: Ensure that the token stack contains at least one token ready.
  38  */
  39
  40 YAML_DECLARE(int)
  41 yaml_parser_fetch_more_tokens(yaml_parser_t *parser);
  42
  43 /*
  44  * The size of the input raw buffer.
  45  */
  46
  47 #define INPUT_RAW_BUFFER_SIZE   16384
  48
  49 /*
  50  * The size of the input buffer.
  51  *
  52  * It should be possible to decode the whole raw buffer.
  53  */
  54
  55 #define INPUT_BUFFER_SIZE       (INPUT_RAW_BUFFER_SIZE*3)
  56
  57 /*
  58  * The size of the output buffer.
  59  */
  60
  61 #define OUTPUT_BUFFER_SIZE      16384
  62
  63 /*
  64  * The size of the output raw buffer.
  65  *
  66  * It should be possible to encode the whole output buffer.
  67  */
  68
  69 #define OUTPUT_RAW_BUFFER_SIZE  (OUTPUT_BUFFER_SIZE*2+2)
  70
  71 /*
  72  * The size of other stacks and queues.
  73  */
  74
  75 #define INITIAL_STACK_SIZE  16
  76 #define INITIAL_QUEUE_SIZE  16
  77 #define INITIAL_STRING_SIZE 16
  78
  79 /*
  80  * Buffer management.
  81  */
  82
  83 #define BUFFER_INIT(context,buffer,size)                                        \
  84     (((buffer).start = yaml_malloc(size)) ?                                     \
  85         ((buffer).last = (buffer).pointer = (buffer).start,                     \
  86          (buffer).end = (buffer).start+(size),                                  \
  87          1) :                                                                   \
  88         ((context)->error = YAML_MEMORY_ERROR,                                  \
  89          0))
  90
  91 #define BUFFER_DEL(context,buffer)                                              \
  92     (yaml_free((buffer).start),                                                 \
  93      (buffer).start = (buffer).pointer = (buffer).end = 0)
  94
  95 /*
  96  * String management.
  97  */
  98
  99 typedef struct {
 100     yaml_char_t *start;
 101     yaml_char_t *end;
 102     yaml_char_t *pointer;
 103 } yaml_string_t;
 104
 105 YAML_DECLARE(int)
 106 yaml_string_extend(yaml_char_t **start,
 107         yaml_char_t **pointer, yaml_char_t **end);
 108
 109 YAML_DECLARE(int)
 110 yaml_string_join(
 111         yaml_char_t **a_start, yaml_char_t **a_pointer, yaml_char_t **a_end,
 112         yaml_char_t **b_start, yaml_char_t **b_pointer, yaml_char_t **b_end);
 113
 114 #define NULL_STRING { NULL, NULL, NULL }
 115
 116 #define STRING(string,length)   { (string), (string)+(length), (string) }
 117
 118 #define STRING_ASSIGN(value,string,length)                                      \
 119     ((value).start = (string),                                                  \
 120      (value).end = (string)+(length),                                           \
 121      (value).pointer = (string))
 122
 123 #define STRING_INIT(context,string,size)                                        \
 124     (((string).start = yaml_malloc(size)) ?                                     \
 125         ((string).pointer = (string).start,                                     \
 126          (string).end = (string).start+(size),                                  \
 127          memset((string).start, 0, (size)),                                     \
 128          1) :                                                                   \
 129         ((context)->error = YAML_MEMORY_ERROR,                                  \
 130          0))
 131
 132 #define STRING_DEL(context,string)                                              \
 133     (yaml_free((string).start),                                                 \
 134      (string).start = (string).pointer = (string).end = 0)
 135
 136 #define STRING_EXTEND(context,string)                                           \
 137     (((string).pointer+5 < (string).end)                                        \
 138         || yaml_string_extend(&(string).start,                                  \
 139             &(string).pointer, &(string).end))
 140
 141 #define CLEAR(context,string)                                                   \
 142     ((string).pointer = (string).start,                                         \
 143      memset((string).start, 0, (string).end-(string).start))
 144
 145 #define JOIN(context,string_a,string_b)                                         \
 146     ((yaml_string_join(&(string_a).start, &(string_a).pointer,                  \
 147                        &(string_a).end, &(string_b).start,                      \
 148                        &(string_b).pointer, &(string_b).end)) ?                 \
 149         ((string_b).pointer = (string_b).start,                                 \
 150          1) :                                                                   \
 151         ((context)->error = YAML_MEMORY_ERROR,                                  \
 152          0))
 153
 154 /*
 155  * String check operations.
 156  */
 157
 158 /*
 159  * Check the octet at the specified position.
 160  */
 161
 162 #define CHECK_AT(string,octet,offset)                                           \
 163     ((string).pointer[offset] == (yaml_char_t)(octet))
 164
 165 /*
 166  * Check the current octet in the buffer.
 167  */
 168
 169 #define CHECK(string,octet) CHECK_AT((string),(octet),0)
 170
 171 /*
 172  * Check if the character at the specified position is an alphabetical
 173  * character, a digit, '_', or '-'.
 174  */
 175
 176 #define IS_ALPHA_AT(string,offset)                                              \
 177      (((string).pointer[offset] >= (yaml_char_t) '0' &&                         \
 178        (string).pointer[offset] <= (yaml_char_t) '9') ||                        \
 179       ((string).pointer[offset] >= (yaml_char_t) 'A' &&                         \
 180        (string).pointer[offset] <= (yaml_char_t) 'Z') ||                        \
 181       ((string).pointer[offset] >= (yaml_char_t) 'a' &&                         \
 182        (string).pointer[offset] <= (yaml_char_t) 'z') ||                        \
 183       (string).pointer[offset] == '_' ||                                        \
 184       (string).pointer[offset] == '-')
 185
 186 #define IS_ALPHA(string)    IS_ALPHA_AT((string),0)
 187
 188 /*
 189  * Check if the character at the specified position is a digit.
 190  */
 191
 192 #define IS_DIGIT_AT(string,offset)                                              \
 193      (((string).pointer[offset] >= (yaml_char_t) '0' &&                         \
 194        (string).pointer[offset] <= (yaml_char_t) '9'))
 195
 196 #define IS_DIGIT(string)    IS_DIGIT_AT((string),0)
 197
 198 /*
 199  * Get the value of a digit.
 200  */
 201
 202 #define AS_DIGIT_AT(string,offset)                                              \
 203      ((string).pointer[offset] - (yaml_char_t) '0')
 204
 205 #define AS_DIGIT(string)    AS_DIGIT_AT((string),0)
 206
 207 /*
 208  * Check if the character at the specified position is a hex-digit.
 209  */
 210
 211 #define IS_HEX_AT(string,offset)                                                \
 212      (((string).pointer[offset] >= (yaml_char_t) '0' &&                         \
 213        (string).pointer[offset] <= (yaml_char_t) '9') ||                        \
 214       ((string).pointer[offset] >= (yaml_char_t) 'A' &&                         \
 215        (string).pointer[offset] <= (yaml_char_t) 'F') ||                        \
 216       ((string).pointer[offset] >= (yaml_char_t) 'a' &&                         \
 217        (string).pointer[offset] <= (yaml_char_t) 'f'))
 218
 219 #define IS_HEX(string)    IS_HEX_AT((string),0)
 220
 221 /*
 222  * Get the value of a hex-digit.
 223  */
 224
 225 #define AS_HEX_AT(string,offset)                                                \
 226       (((string).pointer[offset] >= (yaml_char_t) 'A' &&                        \
 227         (string).pointer[offset] <= (yaml_char_t) 'F') ?                        \
 228        ((string).pointer[offset] - (yaml_char_t) 'A' + 10) :                    \
 229        ((string).pointer[offset] >= (yaml_char_t) 'a' &&                        \
 230         (string).pointer[offset] <= (yaml_char_t) 'f') ?                        \
 231        ((string).pointer[offset] - (yaml_char_t) 'a' + 10) :                    \
 232        ((string).pointer[offset] - (yaml_char_t) '0'))
 233
 234 #define AS_HEX(string)  AS_HEX_AT((string),0)
 235
 236 /*
 237  * Check if the character is ASCII.
 238  */
 239
 240 #define IS_ASCII_AT(string,offset)                                              \
 241     ((string).pointer[offset] <= (yaml_char_t) '\x7F')
 242
 243 #define IS_ASCII(string)    IS_ASCII_AT((string),0)
 244
 245 /*
 246  * Check if the character can be printed unescaped.
 247  */
 248
 249 #define IS_PRINTABLE_AT(string,offset)                                          \
 250     (((string).pointer[offset] == 0x0A)         /* . == #x0A */                 \
 251      || ((string).pointer[offset] >= 0x20       /* #x20 <= . <= #x7E */         \
 252          && (string).pointer[offset] <= 0x7E)                                   \
 253      || ((string).pointer[offset] == 0xC2       /* #0xA0 <= . <= #xD7FF */      \
 254          && (string).pointer[offset+1] >= 0xA0)                                 \
 255      || ((string).pointer[offset] > 0xC2                                        \
 256          && (string).pointer[offset] < 0xED)                                    \
 257      || ((string).pointer[offset] == 0xED                                       \
 258          && (string).pointer[offset+1] < 0xA0)                                  \
 259      || ((string).pointer[offset] == 0xEE)                                      \
 260      || ((string).pointer[offset] == 0xEF      /* #xE000 <= . <= #xFFFD */      \
 261          && !((string).pointer[offset+1] == 0xBB        /* && . != #xFEFF */    \
 262              && (string).pointer[offset+2] == 0xBF)                             \
 263          && !((string).pointer[offset+1] == 0xBF                                \
 264              && ((string).pointer[offset+2] == 0xBE                             \
 265                  || (string).pointer[offset+2] == 0xBF))))
 266
 267 #define IS_PRINTABLE(string)    IS_PRINTABLE_AT((string),0)
 268
 269 /*
 270  * Check if the character at the specified position is NUL.
 271  */
 272
 273 #define IS_Z_AT(string,offset)    CHECK_AT((string),'\0',(offset))
 274
 275 #define IS_Z(string)    IS_Z_AT((string),0)
 276
 277 /*
 278  * Check if the character at the specified position is BOM.
 279  */
 280
 281 #define IS_BOM_AT(string,offset)                                                \
 282      (CHECK_AT((string),'\xEF',(offset))                                        \
 283       && CHECK_AT((string),'\xBB',(offset)+1)                                   \
 284       && CHECK_AT((string),'\xBF',(offset)+2))  /* BOM (#xFEFF) */
 285
 286 #define IS_BOM(string)  IS_BOM_AT(string,0)
 287
 288 /*
 289  * Check if the character at the specified position is space.
 290  */
 291
 292 #define IS_SPACE_AT(string,offset)  CHECK_AT((string),' ',(offset))
 293
 294 #define IS_SPACE(string)    IS_SPACE_AT((string),0)
 295
 296 /*
 297  * Check if the character at the specified position is tab.
 298  */
 299
 300 #define IS_TAB_AT(string,offset)    CHECK_AT((string),'\t',(offset))
 301
 302 #define IS_TAB(string)  IS_TAB_AT((string),0)
 303
 304 /*
 305  * Check if the character at the specified position is blank (space or tab).
 306  */
 307
 308 #define IS_BLANK_AT(string,offset)                                              \
 309     (IS_SPACE_AT((string),(offset)) || IS_TAB_AT((string),(offset)))
 310
 311 #define IS_BLANK(string)    IS_BLANK_AT((string),0)
 312
 313 /*
 314  * Check if the character at the specified position is a line break.
 315  */
 316
 317 #define IS_BREAK_AT(string,offset)                                              \
 318     (CHECK_AT((string),'\r',(offset))               /* CR (#xD)*/               \
 319      || CHECK_AT((string),'\n',(offset))            /* LF (#xA) */              \
 320      || (CHECK_AT((string),'\xC2',(offset))                                     \
 321          && CHECK_AT((string),'\x85',(offset)+1))   /* NEL (#x85) */            \
 322      || (CHECK_AT((string),'\xE2',(offset))                                     \
 323          && CHECK_AT((string),'\x80',(offset)+1)                                \
 324          && CHECK_AT((string),'\xA8',(offset)+2))   /* LS (#x2028) */           \
 325      || (CHECK_AT((string),'\xE2',(offset))                                     \
 326          && CHECK_AT((string),'\x80',(offset)+1)                                \
 327          && CHECK_AT((string),'\xA9',(offset)+2)))  /* PS (#x2029) */
 328
 329 #define IS_BREAK(string)    IS_BREAK_AT((string),0)
 330
 331 #define IS_CRLF_AT(string,offset)                                               \
 332      (CHECK_AT((string),'\r',(offset)) && CHECK_AT((string),'\n',(offset)+1))
 333
 334 #define IS_CRLF(string) IS_CRLF_AT((string),0)
 335
 336 /*
 337  * Check if the character is a line break or NUL.
 338  */
 339
 340 #define IS_BREAKZ_AT(string,offset)                                             \
 341     (IS_BREAK_AT((string),(offset)) || IS_Z_AT((string),(offset)))
 342
 343 #define IS_BREAKZ(string)   IS_BREAKZ_AT((string),0)
 344
 345 /*
 346  * Check if the character is a line break, space, or NUL.
 347  */
 348
 349 #define IS_SPACEZ_AT(string,offset)                                             \
 350     (IS_SPACE_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
 351
 352 #define IS_SPACEZ(string)   IS_SPACEZ_AT((string),0)
 353
 354 /*
 355  * Check if the character is a line break, space, tab, or NUL.
 356  */
 357
 358 #define IS_BLANKZ_AT(string,offset)                                             \
 359     (IS_BLANK_AT((string),(offset)) || IS_BREAKZ_AT((string),(offset)))
 360
 361 #define IS_BLANKZ(string)   IS_BLANKZ_AT((string),0)
 362
 363 /*
 364  * Determine the width of the character.
 365  */
 366
 367 #define WIDTH_AT(string,offset)                                                 \
 368      (((string).pointer[offset] & 0x80) == 0x00 ? 1 :                           \
 369       ((string).pointer[offset] & 0xE0) == 0xC0 ? 2 :                           \
 370       ((string).pointer[offset] & 0xF0) == 0xE0 ? 3 :                           \
 371       ((string).pointer[offset] & 0xF8) == 0xF0 ? 4 : 0)
 372
 373 #define WIDTH(string)   WIDTH_AT((string),0)
 374
 375 /*
 376  * Move the string pointer to the next character.
 377  */
 378
 379 #define MOVE(string)    ((string).pointer += WIDTH((string)))
 380
 381 /*
 382  * Copy a character and move the pointers of both strings.
 383  */
 384
 385 #define COPY(string_a,string_b)                                                 \
 386     ((*(string_b).pointer & 0x80) == 0x00 ?                                     \
 387      (*((string_a).pointer++) = *((string_b).pointer++)) :                      \
 388      (*(string_b).pointer & 0xE0) == 0xC0 ?                                     \
 389      (*((string_a).pointer++) = *((string_b).pointer++),                        \
 390       *((string_a).pointer++) = *((string_b).pointer++)) :                      \
 391      (*(string_b).pointer & 0xF0) == 0xE0 ?                                     \
 392      (*((string_a).pointer++) = *((string_b).pointer++),                        \
 393       *((string_a).pointer++) = *((string_b).pointer++),                        \
 394       *((string_a).pointer++) = *((string_b).pointer++)) :                      \
 395      (*(string_b).pointer & 0xF8) == 0xF0 ?                                     \
 396      (*((string_a).pointer++) = *((string_b).pointer++),                        \
 397       *((string_a).pointer++) = *((string_b).pointer++),                        \
 398       *((string_a).pointer++) = *((string_b).pointer++),                        \
 399       *((string_a).pointer++) = *((string_b).pointer++)) : 0)
 400
 401 /*
 402  * Stack and queue management.
 403  */
 404
 405 YAML_DECLARE(int)
 406 yaml_stack_extend(void **start, void **top, void **end);
 407
 408 YAML_DECLARE(int)
 409 yaml_queue_extend(void **start, void **head, void **tail, void **end);
 410
 411 #define STACK_INIT(context,stack,size)                                          \
 412     (((stack).start = yaml_malloc((size)*sizeof(*(stack).start))) ?             \
 413         ((stack).top = (stack).start,                                           \
 414          (stack).end = (stack).start+(size),                                    \
 415          1) :                                                                   \
 416         ((context)->error = YAML_MEMORY_ERROR,                                  \
 417          0))
 418
 419 #define STACK_DEL(context,stack)                                                \
 420     (yaml_free((stack).start),                                                  \
 421      (stack).start = (stack).top = (stack).end = 0)
 422
 423 #define STACK_EMPTY(context,stack)                                              \
 424     ((stack).start == (stack).top)
 425
 426 #define STACK_LIMIT(context,stack,size)                                         \
 427     ((stack).top - (stack).start < (size) ?                                     \
 428         1 :                                                                     \
 429         ((context)->error = YAML_MEMORY_ERROR,                                  \
 430          0))
 431
 432 #define PUSH(context,stack,value)                                               \
 433     (((stack).top != (stack).end                                                \
 434       || yaml_stack_extend((void **)&(stack).start,                             \
 435               (void **)&(stack).top, (void **)&(stack).end)) ?                  \
 436         (*((stack).top++) = value,                                              \
 437          1) :                                                                   \
 438         ((context)->error = YAML_MEMORY_ERROR,                                  \
 439          0))
 440
 441 #define POP(context,stack)                                                      \
 442     (*(--(stack).top))
 443
 444 #define QUEUE_INIT(context,queue,size)                                          \
 445     (((queue).start = yaml_malloc((size)*sizeof(*(queue).start))) ?             \
 446         ((queue).head = (queue).tail = (queue).start,                           \
 447          (queue).end = (queue).start+(size),                                    \
 448          1) :                                                                   \
 449         ((context)->error = YAML_MEMORY_ERROR,                                  \
 450          0))
 451
 452 #define QUEUE_DEL(context,queue)                                                \
 453     (yaml_free((queue).start),                                                  \
 454      (queue).start = (queue).head = (queue).tail = (queue).end = 0)
 455
 456 #define QUEUE_EMPTY(context,queue)                                              \
 457     ((queue).head == (queue).tail)
 458
 459 #define ENQUEUE(context,queue,value)                                            \
 460     (((queue).tail != (queue).end                                               \
 461       || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head,     \
 462             (void **)&(queue).tail, (void **)&(queue).end)) ?                   \
 463         (*((queue).tail++) = value,                                             \
 464          1) :                                                                   \
 465         ((context)->error = YAML_MEMORY_ERROR,                                  \
 466          0))
 467
 468 #define DEQUEUE(context,queue)                                                  \
 469     (*((queue).head++))
 470
 471 #define QUEUE_INSERT(context,queue,index,value)                                 \
 472     (((queue).tail != (queue).end                                               \
 473       || yaml_queue_extend((void **)&(queue).start, (void **)&(queue).head,     \
 474             (void **)&(queue).tail, (void **)&(queue).end)) ?                   \
 475         (memmove((queue).head+(index)+1,(queue).head+(index),                   \
 476             ((queue).tail-(queue).head-(index))*sizeof(*(queue).start)),        \
 477          *((queue).head+(index)) = value,                                       \
 478          (queue).tail++,                                                        \
 479          1) :                                                                   \
 480         ((context)->error = YAML_MEMORY_ERROR,                                  \
 481          0))
 482
 483 /*
 484  * Token initializers.
 485  */
 486
 487 #define TOKEN_INIT(token,token_type,token_start_mark,token_end_mark)            \
 488     (memset(&(token), 0, sizeof(yaml_token_t)),                                 \
 489      (token).type = (token_type),                                               \
 490      (token).start_mark = (token_start_mark),                                   \
 491      (token).end_mark = (token_end_mark))
 492
 493 #define STREAM_START_TOKEN_INIT(token,token_encoding,start_mark,end_mark)       \
 494     (TOKEN_INIT((token),YAML_STREAM_START_TOKEN,(start_mark),(end_mark)),       \
 495      (token).data.stream_start.encoding = (token_encoding))
 496
 497 #define STREAM_END_TOKEN_INIT(token,start_mark,end_mark)                        \
 498     (TOKEN_INIT((token),YAML_STREAM_END_TOKEN,(start_mark),(end_mark)))
 499
 500 #define ALIAS_TOKEN_INIT(token,token_value,start_mark,end_mark)                 \
 501     (TOKEN_INIT((token),YAML_ALIAS_TOKEN,(start_mark),(end_mark)),              \
 502      (token).data.alias.value = (token_value))
 503
 504 #define ANCHOR_TOKEN_INIT(token,token_value,start_mark,end_mark)                \
 505     (TOKEN_INIT((token),YAML_ANCHOR_TOKEN,(start_mark),(end_mark)),             \
 506      (token).data.anchor.value = (token_value))
 507
 508 #define TAG_TOKEN_INIT(token,token_handle,token_suffix,start_mark,end_mark)     \
 509     (TOKEN_INIT((token),YAML_TAG_TOKEN,(start_mark),(end_mark)),                \
 510      (token).data.tag.handle = (token_handle),                                  \
 511      (token).data.tag.suffix = (token_suffix))
 512
 513 #define SCALAR_TOKEN_INIT(token,token_value,token_length,token_style,start_mark,end_mark)   \
 514     (TOKEN_INIT((token),YAML_SCALAR_TOKEN,(start_mark),(end_mark)),             \
 515      (token).data.scalar.value = (token_value),                                 \
 516      (token).data.scalar.length = (token_length),                               \
 517      (token).data.scalar.style = (token_style))
 518
 519 #define VERSION_DIRECTIVE_TOKEN_INIT(token,token_major,token_minor,start_mark,end_mark)     \
 520     (TOKEN_INIT((token),YAML_VERSION_DIRECTIVE_TOKEN,(start_mark),(end_mark)),  \
 521      (token).data.version_directive.major = (token_major),                      \
 522      (token).data.version_directive.minor = (token_minor))
 523
 524 #define TAG_DIRECTIVE_TOKEN_INIT(token,token_handle,token_prefix,start_mark,end_mark)       \
 525     (TOKEN_INIT((token),YAML_TAG_DIRECTIVE_TOKEN,(start_mark),(end_mark)),      \
 526      (token).data.tag_directive.handle = (token_handle),                        \
 527      (token).data.tag_directive.prefix = (token_prefix))
 528
 529 /*
 530  * Event initializers.
 531  */
 532
 533 #define EVENT_INIT(event,event_type,event_start_mark,event_end_mark)            \
 534     (memset(&(event), 0, sizeof(yaml_event_t)),                                 \
 535      (event).type = (event_type),                                               \
 536      (event).start_mark = (event_start_mark),                                   \
 537      (event).end_mark = (event_end_mark))
 538
 539 #define STREAM_START_EVENT_INIT(event,event_encoding,start_mark,end_mark)       \
 540     (EVENT_INIT((event),YAML_STREAM_START_EVENT,(start_mark),(end_mark)),       \
 541      (event).data.stream_start.encoding = (event_encoding))
 542
 543 #define STREAM_END_EVENT_INIT(event,start_mark,end_mark)                        \
 544     (EVENT_INIT((event),YAML_STREAM_END_EVENT,(start_mark),(end_mark)))
 545
 546 #define DOCUMENT_START_EVENT_INIT(event,event_version_directive,                \
 547         event_tag_directives_start,event_tag_directives_end,event_implicit,start_mark,end_mark) \
 548     (EVENT_INIT((event),YAML_DOCUMENT_START_EVENT,(start_mark),(end_mark)),     \
 549      (event).data.document_start.version_directive = (event_version_directive), \
 550      (event).data.document_start.tag_directives.start = (event_tag_directives_start),   \
 551      (event).data.document_start.tag_directives.end = (event_tag_directives_end),   \
 552      (event).data.document_start.implicit = (event_implicit))
 553
 554 #define DOCUMENT_END_EVENT_INIT(event,event_implicit,start_mark,end_mark)       \
 555     (EVENT_INIT((event),YAML_DOCUMENT_END_EVENT,(start_mark),(end_mark)),       \
 556      (event).data.document_end.implicit = (event_implicit))
 557
 558 #define ALIAS_EVENT_INIT(event,event_anchor,start_mark,end_mark)                \
 559     (EVENT_INIT((event),YAML_ALIAS_EVENT,(start_mark),(end_mark)),              \
 560      (event).data.alias.anchor = (event_anchor))
 561
 562 #define SCALAR_EVENT_INIT(event,event_anchor,event_tag,event_value,event_length,    \
 563         event_plain_implicit, event_quoted_implicit,event_style,start_mark,end_mark)    \
 564     (EVENT_INIT((event),YAML_SCALAR_EVENT,(start_mark),(end_mark)),             \
 565      (event).data.scalar.anchor = (event_anchor),                               \
 566      (event).data.scalar.tag = (event_tag),                                     \
 567      (event).data.scalar.value = (event_value),                                 \
 568      (event).data.scalar.length = (event_length),                               \
 569      (event).data.scalar.plain_implicit = (event_plain_implicit),               \
 570      (event).data.scalar.quoted_implicit = (event_quoted_implicit),             \
 571      (event).data.scalar.style = (event_style))
 572
 573 #define SEQUENCE_START_EVENT_INIT(event,event_anchor,event_tag,                 \
 574         event_implicit,event_style,start_mark,end_mark)                         \
 575     (EVENT_INIT((event),YAML_SEQUENCE_START_EVENT,(start_mark),(end_mark)),     \
 576      (event).data.sequence_start.anchor = (event_anchor),                       \
 577      (event).data.sequence_start.tag = (event_tag),                             \
 578      (event).data.sequence_start.implicit = (event_implicit),                   \
 579      (event).data.sequence_start.style = (event_style))
 580
 581 #define SEQUENCE_END_EVENT_INIT(event,start_mark,end_mark)                      \
 582     (EVENT_INIT((event),YAML_SEQUENCE_END_EVENT,(start_mark),(end_mark)))
 583
 584 #define MAPPING_START_EVENT_INIT(event,event_anchor,event_tag,                  \
 585         event_implicit,event_style,start_mark,end_mark)                         \
 586     (EVENT_INIT((event),YAML_MAPPING_START_EVENT,(start_mark),(end_mark)),      \
 587      (event).data.mapping_start.anchor = (event_anchor),                        \
 588      (event).data.mapping_start.tag = (event_tag),                              \
 589      (event).data.mapping_start.implicit = (event_implicit),                    \
 590      (event).data.mapping_start.style = (event_style))
 591
 592 #define MAPPING_END_EVENT_INIT(event,start_mark,end_mark)                       \
 593     (EVENT_INIT((event),YAML_MAPPING_END_EVENT,(start_mark),(end_mark)))
 594
 595 /*
 596  * Document initializer.
 597  */
 598
 599 #define DOCUMENT_INIT(document,document_nodes_start,document_nodes_end,         \
 600         document_version_directive,document_tag_directives_start,               \
 601         document_tag_directives_end,document_start_implicit,                    \
 602         document_end_implicit,document_start_mark,document_end_mark)            \
 603     (memset(&(document), 0, sizeof(yaml_document_t)),                           \
 604      (document).nodes.start = (document_nodes_start),                           \
 605      (document).nodes.end = (document_nodes_end),                               \
 606      (document).nodes.top = (document_nodes_start),                             \
 607      (document).version_directive = (document_version_directive),               \
 608      (document).tag_directives.start = (document_tag_directives_start),         \
 609      (document).tag_directives.end = (document_tag_directives_end),             \
 610      (document).start_implicit = (document_start_implicit),                     \
 611      (document).end_implicit = (document_end_implicit),                         \
 612      (document).start_mark = (document_start_mark),                             \
 613      (document).end_mark = (document_end_mark))
 614
 615 /*
 616  * Node initializers.
 617  */
 618
 619 #define NODE_INIT(node,node_type,node_tag,node_start_mark,node_end_mark)        \
 620     (memset(&(node), 0, sizeof(yaml_node_t)),                                   \
 621      (node).type = (node_type),                                                 \
 622      (node).tag = (node_tag),                                                   \
 623      (node).start_mark = (node_start_mark),                                     \
 624      (node).end_mark = (node_end_mark))
 625
 626 #define SCALAR_NODE_INIT(node,node_tag,node_value,node_length,                  \
 627         node_style,start_mark,end_mark)                                         \
 628     (NODE_INIT((node),YAML_SCALAR_NODE,(node_tag),(start_mark),(end_mark)),     \
 629      (node).data.scalar.value = (node_value),                                   \
 630      (node).data.scalar.length = (node_length),                                 \
 631      (node).data.scalar.style = (node_style))
 632
 633 #define SEQUENCE_NODE_INIT(node,node_tag,node_items_start,node_items_end,       \
 634         node_style,start_mark,end_mark)                                         \
 635     (NODE_INIT((node),YAML_SEQUENCE_NODE,(node_tag),(start_mark),(end_mark)),   \
 636      (node).data.sequence.items.start = (node_items_start),                     \
 637      (node).data.sequence.items.end = (node_items_end),                         \
 638      (node).data.sequence.items.top = (node_items_start),                       \
 639      (node).data.sequence.style = (node_style))
 640
 641 #define MAPPING_NODE_INIT(node,node_tag,node_pairs_start,node_pairs_end,        \
 642         node_style,start_mark,end_mark)                                         \
 643     (NODE_INIT((node),YAML_MAPPING_NODE,(node_tag),(start_mark),(end_mark)),    \
 644      (node).data.mapping.pairs.start = (node_pairs_start),                      \
 645      (node).data.mapping.pairs.end = (node_pairs_end),                          \
 646      (node).data.mapping.pairs.top = (node_pairs_start),                        \
 647      (node).data.mapping.style = (node_style))
 648