emit.c

   1 /*
   2  * Copyright 2011      Leiden University. All rights reserved.
   3  * Copyright 2013-2014 Ecole Normale Superieure. All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  *    1. Redistributions of source code must retain the above copyright
  10  *       notice, this list of conditions and the following disclaimer.
  11  *
  12  *    2. Redistributions in binary form must reproduce the above
  13  *       copyright notice, this list of conditions and the following
  14  *       disclaimer in the documentation and/or other materials provided
  15  *       with the distribution.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY LEIDEN UNIVERSITY ''AS IS'' AND ANY
  18  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  20  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LEIDEN UNIVERSITY OR
  21  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  22  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  23  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
  24  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  25  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  26  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  27  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  28  *
  29  * The views and conclusions contained in the software and documentation
  30  * are those of the authors and should not be interpreted as
  31  * representing official policies, either expressed or implied, of
  32  * Leiden University.
  33  */
  34
  35 #include <yaml.h>
  36
  37 #include "expr.h"
  38 #include "loc.h"
  39 #include "scop.h"
  40 #include "scop_yaml.h"
  41 #include "tree.h"
  42
  43 static int emit_string(yaml_emitter_t *emitter, const char *str)
  44 {
  45         yaml_event_t event;
  46
  47         if (!yaml_scalar_event_initialize(&event, NULL, NULL,
  48                                     (yaml_char_t *) str, strlen(str),
  49                                     1, 1, YAML_PLAIN_SCALAR_STYLE))
  50                 return -1;
  51         if (!yaml_emitter_emit(emitter, &event))
  52                 return -1;
  53
  54         return 0;
  55 }
  56
  57 /* Print the string "name" and the string "str" to "emitter".
  58  */
  59 static int emit_named_string(yaml_emitter_t *emitter, const char *name,
  60         const char *str)
  61 {
  62         if (emit_string(emitter, name) < 0)
  63                 return -1;
  64         if (emit_string(emitter, str) < 0)
  65                 return -1;
  66         return 0;
  67 }
  68
  69 /* Print the isl_id "id" to "emitter".
  70  */
  71 static int emit_id(yaml_emitter_t *emitter, __isl_keep isl_id *id)
  72 {
  73         return emit_string(emitter, isl_id_get_name(id));
  74 }
  75
  76 /* Print the string "name" and the isl_id "id" to "emitter".
  77  */
  78 static int emit_named_id(yaml_emitter_t *emitter, const char *name,
  79         __isl_keep isl_id *id)
  80 {
  81         if (emit_string(emitter, name) < 0)
  82                 return -1;
  83         if (emit_id(emitter, id) < 0)
  84                 return -1;
  85         return 0;
  86 }
  87
  88 static int emit_int(yaml_emitter_t *emitter, int i)
  89 {
  90         char buffer[40];
  91
  92         snprintf(buffer, sizeof(buffer), "%d", i);
  93         return emit_string(emitter, buffer);
  94 }
  95
  96 static int emit_named_int(yaml_emitter_t *emitter, const char *name, int i)
  97 {
  98         if (emit_string(emitter, name) < 0)
  99                 return -1;
 100         if (emit_int(emitter, i) < 0)
 101                 return -1;
 102         return 0;
 103 }
 104
 105 /* Print the unsigned integer "u" to "emitter".
 106  */
 107 static int emit_unsigned(yaml_emitter_t *emitter, unsigned u)
 108 {
 109         char buffer[40];
 110
 111         snprintf(buffer, sizeof(buffer), "%u", u);
 112         return emit_string(emitter, buffer);
 113 }
 114
 115 /* Print the string "name" and the unsigned integer "u" to "emitter".
 116  */
 117 static int emit_named_unsigned(yaml_emitter_t *emitter, const char *name,
 118         unsigned u)
 119 {
 120         if (emit_string(emitter, name) < 0)
 121                 return -1;
 122         if (emit_int(emitter, u) < 0)
 123                 return -1;
 124         return 0;
 125 }
 126
 127 static int emit_double(yaml_emitter_t *emitter, double d)
 128 {
 129         char buffer[40];
 130
 131         snprintf(buffer, sizeof(buffer), "%g", d);
 132         return emit_string(emitter, buffer);
 133 }
 134
 135 static int emit_map(yaml_emitter_t *emitter, __isl_keep isl_map *map)
 136 {
 137         isl_ctx *ctx = isl_map_get_ctx(map);
 138         isl_printer *p;
 139         char *str;
 140         int r;
 141
 142         p = isl_printer_to_str(ctx);
 143         p = isl_printer_print_map(p, map);
 144         str = isl_printer_get_str(p);
 145         isl_printer_free(p);
 146         r = emit_string(emitter, str);
 147         free(str);
 148         return r;
 149 }
 150
 151 /* Print the isl_val "val" to "emitter".
 152  */
 153 static int emit_val(yaml_emitter_t *emitter, __isl_keep isl_val *val)
 154 {
 155         isl_ctx *ctx = isl_val_get_ctx(val);
 156         isl_printer *p;
 157         char *str;
 158         int r;
 159
 160         p = isl_printer_to_str(ctx);
 161         p = isl_printer_print_val(p, val);
 162         str = isl_printer_get_str(p);
 163         isl_printer_free(p);
 164         r = emit_string(emitter, str);
 165         free(str);
 166         return r;
 167 }
 168
 169 /* Print the string "name" and the isl_val "val" to "emitter".
 170  */
 171 static int emit_named_val(yaml_emitter_t *emitter, const char *name,
 172         __isl_keep isl_val *val)
 173 {
 174         if (emit_string(emitter, name) < 0)
 175                 return -1;
 176         if (emit_val(emitter, val) < 0)
 177                 return -1;
 178         return 0;
 179 }
 180
 181 static int emit_set(yaml_emitter_t *emitter, __isl_keep isl_set *set)
 182 {
 183         isl_ctx *ctx = isl_set_get_ctx(set);
 184         isl_printer *p;
 185         char *str;
 186         int r;
 187
 188         p = isl_printer_to_str(ctx);
 189         p = isl_printer_print_set(p, set);
 190         str = isl_printer_get_str(p);
 191         isl_printer_free(p);
 192         r = emit_string(emitter, str);
 193         free(str);
 194         return r;
 195 }
 196
 197 static int emit_named_set(yaml_emitter_t *emitter, const char *name,
 198         __isl_keep isl_set *set)
 199 {
 200         if (emit_string(emitter, name) < 0)
 201                 return -1;
 202         if (emit_set(emitter, set) < 0)
 203                 return -1;
 204         return 0;
 205 }
 206
 207 /* Print the string "name" and the map "map" to "emitter".
 208  */
 209 static int emit_named_map(yaml_emitter_t *emitter, const char *name,
 210         __isl_keep isl_map *map)
 211 {
 212         if (emit_string(emitter, name) < 0)
 213                 return -1;
 214         if (emit_map(emitter, map) < 0)
 215                 return -1;
 216         return 0;
 217 }
 218
 219 /* Print the union set "uset" to "emitter".
 220  */
 221 static int emit_union_set(yaml_emitter_t *emitter,
 222         __isl_keep isl_union_set *uset)
 223 {
 224         isl_ctx *ctx = isl_union_set_get_ctx(uset);
 225         isl_printer *p;
 226         char *str;
 227         int r;
 228
 229         p = isl_printer_to_str(ctx);
 230         p = isl_printer_print_union_set(p, uset);
 231         str = isl_printer_get_str(p);
 232         isl_printer_free(p);
 233         r = emit_string(emitter, str);
 234         free(str);
 235         return r;
 236 }
 237
 238 /* Print the union map "umap" to "emitter".
 239  */
 240 static int emit_union_map(yaml_emitter_t *emitter,
 241         __isl_keep isl_union_map *umap)
 242 {
 243         isl_ctx *ctx = isl_union_map_get_ctx(umap);
 244         isl_printer *p;
 245         char *str;
 246         int r;
 247
 248         p = isl_printer_to_str(ctx);
 249         p = isl_printer_print_union_map(p, umap);
 250         str = isl_printer_get_str(p);
 251         isl_printer_free(p);
 252         r = emit_string(emitter, str);
 253         free(str);
 254         return r;
 255 }
 256
 257 /* Print the string "name" and the union set "uset" to "emitter".
 258  */
 259 static int emit_named_union_set(yaml_emitter_t *emitter, const char *name,
 260         __isl_keep isl_union_set *uset)
 261 {
 262         if (emit_string(emitter, name) < 0)
 263                 return -1;
 264         if (emit_union_set(emitter, uset) < 0)
 265                 return -1;
 266         return 0;
 267 }
 268
 269 /* Print the string "name" and the union map "umap" to "emitter".
 270  */
 271 static int emit_named_union_map(yaml_emitter_t *emitter, const char *name,
 272         __isl_keep isl_union_map *umap)
 273 {
 274         if (emit_string(emitter, name) < 0)
 275                 return -1;
 276         if (emit_union_map(emitter, umap) < 0)
 277                 return -1;
 278         return 0;
 279 }
 280
 281 /* Print the isl_multi_pw_aff "mpa" to "emitter".
 282  */
 283 static int emit_multi_pw_aff(yaml_emitter_t *emitter,
 284         __isl_keep isl_multi_pw_aff *mpa)
 285 {
 286         isl_ctx *ctx = isl_multi_pw_aff_get_ctx(mpa);
 287         isl_printer *p;
 288         char *str;
 289         int r;
 290
 291         p = isl_printer_to_str(ctx);
 292         p = isl_printer_print_multi_pw_aff(p, mpa);
 293         str = isl_printer_get_str(p);
 294         isl_printer_free(p);
 295         r = emit_string(emitter, str);
 296         free(str);
 297         return r;
 298 }
 299
 300 /* Print the string "name" and the isl_multi_pw_aff "mpa" to "emitter".
 301  */
 302 static int emit_named_multi_pw_aff(yaml_emitter_t *emitter, const char *name,
 303         __isl_keep isl_multi_pw_aff *mpa)
 304 {
 305         if (emit_string(emitter, name) < 0)
 306                 return -1;
 307         if (emit_multi_pw_aff(emitter, mpa) < 0)
 308                 return -1;
 309         return 0;
 310 }
 311
 312 /* Print "type" to "emitter".
 313  */
 314 static int emit_type(yaml_emitter_t *emitter, struct pet_type *type)
 315 {
 316         yaml_event_t event;
 317
 318         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 319                                                 YAML_BLOCK_MAPPING_STYLE))
 320                 return -1;
 321         if (!yaml_emitter_emit(emitter, &event))
 322                 return -1;
 323
 324         if (emit_string(emitter, "name") < 0)
 325                 return -1;
 326         if (emit_string(emitter, type->name) < 0)
 327                 return -1;
 328
 329         if (emit_string(emitter, "definition") < 0)
 330                 return -1;
 331         if (emit_string(emitter, type->definition) < 0)
 332                 return -1;
 333
 334         if (!yaml_mapping_end_event_initialize(&event))
 335                 return -1;
 336         if (!yaml_emitter_emit(emitter, &event))
 337                 return -1;
 338
 339         return 0;
 340 }
 341
 342 /* Print the list of "n_type" "types", if any, to "emitter".
 343  */
 344 static int emit_types(yaml_emitter_t *emitter, int n_type,
 345         struct pet_type **types)
 346 {
 347         int i;
 348         yaml_event_t event;
 349
 350         if (n_type == 0)
 351                 return 0;
 352
 353         if (emit_string(emitter, "types") < 0)
 354                 return -1;
 355         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 356                                                 YAML_BLOCK_SEQUENCE_STYLE))
 357                 return -1;
 358         if (!yaml_emitter_emit(emitter, &event))
 359                 return -1;
 360
 361         for (i = 0; i < n_type; ++i)
 362                 if (emit_type(emitter, types[i]) < 0)
 363                         return -1;
 364
 365         if (!yaml_sequence_end_event_initialize(&event))
 366                 return -1;
 367         if (!yaml_emitter_emit(emitter, &event))
 368                 return -1;
 369
 370         return 0;
 371 }
 372
 373 static int emit_array(yaml_emitter_t *emitter, struct pet_array *array)
 374 {
 375         yaml_event_t event;
 376
 377         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 378                                                 YAML_BLOCK_MAPPING_STYLE))
 379                 return -1;
 380         if (!yaml_emitter_emit(emitter, &event))
 381                 return -1;
 382
 383         if (emit_string(emitter, "context") < 0)
 384                 return -1;
 385         if (emit_set(emitter, array->context) < 0)
 386                 return -1;
 387
 388         if (emit_string(emitter, "extent") < 0)
 389                 return -1;
 390         if (emit_set(emitter, array->extent) < 0)
 391                 return -1;
 392
 393         if (array->value_bounds) {
 394                 if (emit_string(emitter, "value_bounds") < 0)
 395                         return -1;
 396                 if (emit_set(emitter, array->value_bounds) < 0)
 397                         return -1;
 398         }
 399
 400         if (emit_string(emitter, "element_type") < 0)
 401                 return -1;
 402         if (emit_string(emitter, array->element_type) < 0)
 403                 return -1;
 404         if (emit_named_int(emitter, "element_size", array->element_size) < 0)
 405                 return -1;
 406
 407         if (array->element_is_record)
 408                 if (emit_named_int(emitter, "element_is_record",
 409                                         array->element_is_record) < 0)
 410                         return -1;
 411
 412         if (array->live_out) {
 413                 if (emit_string(emitter, "live_out") < 0)
 414                         return -1;
 415                 if (emit_string(emitter, "1") < 0)
 416                         return -1;
 417         }
 418
 419         if (array->uniquely_defined) {
 420                 if (emit_string(emitter, "uniquely_defined") < 0)
 421                         return -1;
 422                 if (emit_string(emitter, "1") < 0)
 423                         return -1;
 424         }
 425
 426         if (array->declared && emit_named_int(emitter, "declared", 1) < 0)
 427                 return -1;
 428         if (array->exposed && emit_named_int(emitter, "exposed", 1) < 0)
 429                 return -1;
 430
 431         if (!yaml_mapping_end_event_initialize(&event))
 432                 return -1;
 433         if (!yaml_emitter_emit(emitter, &event))
 434                 return -1;
 435
 436         return 0;
 437 }
 438
 439 static int emit_arrays(yaml_emitter_t *emitter, int n_array,
 440         struct pet_array **arrays)
 441 {
 442         int i;
 443         yaml_event_t event;
 444
 445         if (emit_string(emitter, "arrays") < 0)
 446                 return -1;
 447         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 448                                                 YAML_BLOCK_SEQUENCE_STYLE))
 449                 return -1;
 450         if (!yaml_emitter_emit(emitter, &event))
 451                 return -1;
 452
 453         for (i = 0; i < n_array; ++i)
 454                 if (emit_array(emitter, arrays[i]) < 0)
 455                         return -1;
 456
 457         if (!yaml_sequence_end_event_initialize(&event))
 458                 return -1;
 459         if (!yaml_emitter_emit(emitter, &event))
 460                 return -1;
 461
 462         return 0;
 463 }
 464
 465 static int emit_expr_type(yaml_emitter_t *emitter, enum pet_expr_type type)
 466 {
 467         if (emit_string(emitter, pet_type_str(type)) < 0)
 468                 return -1;
 469         return 0;
 470 }
 471
 472 static int emit_expr(yaml_emitter_t *emitter, __isl_keep pet_expr *expr)
 473 {
 474         yaml_event_t event;
 475
 476         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 477                                                 YAML_BLOCK_MAPPING_STYLE))
 478                 return -1;
 479         if (!yaml_emitter_emit(emitter, &event))
 480                 return -1;
 481
 482         if (emit_string(emitter, "type") < 0)
 483                 return -1;
 484         if (emit_expr_type(emitter, expr->type) < 0)
 485                 return -1;
 486
 487         switch (expr->type) {
 488         case pet_expr_error:
 489                 return -1;
 490         case pet_expr_int:
 491                 if (emit_named_val(emitter, "value", expr->i) < 0)
 492                         return -1;
 493                 break;
 494         case pet_expr_double:
 495                 if (emit_string(emitter, "value") < 0)
 496                         return -1;
 497                 if (emit_double(emitter, expr->d.val) < 0)
 498                         return -1;
 499                 if (emit_string(emitter, "string") < 0)
 500                         return -1;
 501                 if (emit_string(emitter, expr->d.s) < 0)
 502                         return -1;
 503                 break;
 504         case pet_expr_access:
 505                 if (emit_string(emitter, "relation") < 0)
 506                         return -1;
 507                 if (emit_map(emitter, expr->acc.access) < 0)
 508                         return -1;
 509                 if (emit_named_multi_pw_aff(emitter,
 510                                             "index", expr->acc.index) < 0)
 511                         return -1;
 512                 if (expr->acc.ref_id &&
 513                     emit_named_id(emitter, "reference", expr->acc.ref_id) < 0)
 514                         return -1;
 515                 if (emit_string(emitter, "read") < 0)
 516                         return -1;
 517                 if (emit_int(emitter, expr->acc.read) < 0)
 518                         return -1;
 519                 if (emit_string(emitter, "write") < 0)
 520                         return -1;
 521                 if (emit_int(emitter, expr->acc.write) < 0)
 522                         return -1;
 523                 break;
 524         case pet_expr_op:
 525                 if (emit_string(emitter, "operation") < 0)
 526                         return -1;
 527                 if (emit_string(emitter, pet_op_str(expr->op)) < 0)
 528                         return -1;
 529                 break;
 530         case pet_expr_call:
 531                 if (emit_string(emitter, "name") < 0)
 532                         return -1;
 533                 if (emit_string(emitter, expr->name) < 0)
 534                         return -1;
 535                 break;
 536         case pet_expr_cast:
 537                 if (emit_string(emitter, "type_name") < 0)
 538                         return -1;
 539                 if (emit_string(emitter, expr->type_name) < 0)
 540                         return -1;
 541                 break;
 542         }
 543
 544         if (expr->n_arg > 0) {
 545                 int i;
 546
 547                 if (emit_string(emitter, "arguments") < 0)
 548                         return -1;
 549                 if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 550                                                     YAML_BLOCK_SEQUENCE_STYLE))
 551                         return -1;
 552                 if (!yaml_emitter_emit(emitter, &event))
 553                         return -1;
 554
 555                 for (i = 0; i < expr->n_arg; ++i)
 556                         if (emit_expr(emitter, expr->args[i]) < 0)
 557                                 return -1;
 558
 559                 if (!yaml_sequence_end_event_initialize(&event))
 560                         return -1;
 561                 if (!yaml_emitter_emit(emitter, &event))
 562                         return -1;
 563         }
 564
 565         if (!yaml_mapping_end_event_initialize(&event))
 566                 return -1;
 567         if (!yaml_emitter_emit(emitter, &event))
 568                 return -1;
 569
 570         return 0;
 571 }
 572
 573 /* Print the string "name" and the expression "expr" to "emitter".
 574  */
 575 static int emit_named_expr(yaml_emitter_t *emitter, const char *name,
 576          __isl_keep pet_expr *expr)
 577 {
 578         if (emit_string(emitter, name) < 0)
 579                 return -1;
 580         if (emit_expr(emitter, expr) < 0)
 581                 return -1;
 582         return 0;
 583 }
 584
 585 /* Print "type" to "emitter".
 586  */
 587 static int emit_tree_type(yaml_emitter_t *emitter, enum pet_tree_type type)
 588 {
 589         if (emit_string(emitter, pet_tree_type_str(type)) < 0)
 590                 return -1;
 591         return 0;
 592 }
 593
 594 /* Recursively print "tree" to "emitter".
 595  */
 596 static int emit_tree(yaml_emitter_t *emitter, __isl_keep pet_tree *tree)
 597 {
 598         yaml_event_t event;
 599         int i;
 600
 601         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 602                                                 YAML_BLOCK_MAPPING_STYLE))
 603                 return -1;
 604         if (!yaml_emitter_emit(emitter, &event))
 605                 return -1;
 606
 607         if (emit_string(emitter, "type") < 0)
 608                 return -1;
 609         if (emit_tree_type(emitter, tree->type) < 0)
 610                 return -1;
 611
 612         switch (tree->type) {
 613         case pet_tree_error:
 614                 return -1;
 615         case pet_tree_block:
 616                 if (emit_named_int(emitter, "block", tree->u.b.block) < 0)
 617                         return -1;
 618                 if (tree->u.b.n == 0)
 619                         break;
 620
 621                 if (emit_string(emitter, "children") < 0)
 622                         return -1;
 623                 if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 624                                                     YAML_BLOCK_SEQUENCE_STYLE))
 625                         return -1;
 626                 if (!yaml_emitter_emit(emitter, &event))
 627                         return -1;
 628
 629                 for (i = 0; i < tree->u.b.n; ++i)
 630                         if (emit_tree(emitter, tree->u.b.child[i]) < 0)
 631                                 return -1;
 632
 633                 if (!yaml_sequence_end_event_initialize(&event))
 634                         return -1;
 635                 if (!yaml_emitter_emit(emitter, &event))
 636                         return -1;
 637                 break;
 638         case pet_tree_break:
 639         case pet_tree_continue:
 640                 break;
 641         case pet_tree_decl:
 642                 if (emit_named_expr(emitter, "variable", tree->u.d.var) < 0)
 643                         return -1;
 644                 break;
 645         case pet_tree_decl_init:
 646                 if (emit_named_expr(emitter, "variable", tree->u.d.var) < 0)
 647                         return -1;
 648                 if (emit_named_expr(emitter,
 649                                     "initialization", tree->u.d.init) < 0)
 650                         return -1;
 651                 break;
 652         case pet_tree_expr:
 653                 if (emit_named_expr(emitter, "expr", tree->u.e.expr) < 0)
 654                         return -1;
 655                 break;
 656         case pet_tree_for:
 657                 if (tree->u.l.independent)
 658                         if (emit_named_int(emitter, "independent", 1) < 0)
 659                                 return -1;
 660                 if (emit_named_int(emitter, "declared", tree->u.l.declared) < 0)
 661                         return -1;
 662                 if (emit_named_expr(emitter, "variable", tree->u.l.iv) < 0)
 663                         return -1;
 664                 if (emit_named_expr(emitter,
 665                                     "initialization", tree->u.l.init) < 0)
 666                         return -1;
 667                 if (emit_named_expr(emitter, "condition", tree->u.l.cond) < 0)
 668                         return -1;
 669                 if (emit_named_expr(emitter, "increment", tree->u.l.inc) < 0)
 670                         return -1;
 671                 if (emit_string(emitter, "body") < 0)
 672                         return -1;
 673                 if (emit_tree(emitter, tree->u.l.body) < 0)
 674                         return -1;
 675                 break;
 676         case pet_tree_while:
 677                 if (emit_named_expr(emitter, "condition", tree->u.l.cond) < 0)
 678                         return -1;
 679                 if (emit_string(emitter, "body") < 0)
 680                         return -1;
 681                 if (emit_tree(emitter, tree->u.l.body) < 0)
 682                         return -1;
 683                 break;
 684         case pet_tree_infinite_loop:
 685                 if (emit_string(emitter, "body") < 0)
 686                         return -1;
 687                 if (emit_tree(emitter, tree->u.l.body) < 0)
 688                         return -1;
 689                 break;
 690         case pet_tree_if:
 691                 if (emit_named_expr(emitter, "condition", tree->u.i.cond) < 0)
 692                         return -1;
 693                 if (emit_string(emitter, "then") < 0)
 694                         return -1;
 695                 if (emit_tree(emitter, tree->u.i.then_body) < 0)
 696                         return -1;
 697                 break;
 698         case pet_tree_if_else:
 699                 if (emit_named_expr(emitter, "condition", tree->u.i.cond) < 0)
 700                         return -1;
 701                 if (emit_string(emitter, "then") < 0)
 702                         return -1;
 703                 if (emit_tree(emitter, tree->u.i.then_body) < 0)
 704                         return -1;
 705                 if (emit_string(emitter, "else") < 0)
 706                         return -1;
 707                 if (emit_tree(emitter, tree->u.i.else_body) < 0)
 708                         return -1;
 709                 break;
 710         }
 711
 712         if (!yaml_mapping_end_event_initialize(&event))
 713                 return -1;
 714         if (!yaml_emitter_emit(emitter, &event))
 715                 return -1;
 716
 717         return 0;
 718 }
 719
 720 static int emit_stmt(yaml_emitter_t *emitter, struct pet_stmt *stmt)
 721 {
 722         yaml_event_t event;
 723
 724         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 725                                                 YAML_BLOCK_MAPPING_STYLE))
 726                 return -1;
 727         if (!yaml_emitter_emit(emitter, &event))
 728                 return -1;
 729
 730         if (emit_string(emitter, "line") < 0)
 731                 return -1;
 732         if (emit_int(emitter, pet_loc_get_line(stmt->loc)) < 0)
 733                 return -1;
 734
 735         if (emit_string(emitter, "domain") < 0)
 736                 return -1;
 737         if (emit_set(emitter, stmt->domain) < 0)
 738                 return -1;
 739
 740         if (emit_string(emitter, "schedule") < 0)
 741                 return -1;
 742         if (emit_map(emitter, stmt->schedule) < 0)
 743                 return -1;
 744
 745         if (emit_string(emitter, "body") < 0)
 746                 return -1;
 747         if (emit_tree(emitter, stmt->body) < 0)
 748                 return -1;
 749
 750         if (stmt->n_arg > 0) {
 751                 int i;
 752
 753                 if (emit_string(emitter, "arguments") < 0)
 754                         return -1;
 755                 if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 756                                                     YAML_BLOCK_SEQUENCE_STYLE))
 757                         return -1;
 758                 if (!yaml_emitter_emit(emitter, &event))
 759                         return -1;
 760
 761                 for (i = 0; i < stmt->n_arg; ++i)
 762                         if (emit_expr(emitter, stmt->args[i]) < 0)
 763                                 return -1;
 764
 765                 if (!yaml_sequence_end_event_initialize(&event))
 766                         return -1;
 767                 if (!yaml_emitter_emit(emitter, &event))
 768                         return -1;
 769         }
 770
 771         if (!yaml_mapping_end_event_initialize(&event))
 772                 return -1;
 773         if (!yaml_emitter_emit(emitter, &event))
 774                 return -1;
 775
 776         return 0;
 777 }
 778
 779 static int emit_statements(yaml_emitter_t *emitter, int n_stmt,
 780         struct pet_stmt **stmts)
 781 {
 782         int i;
 783         yaml_event_t event;
 784
 785         if (emit_string(emitter, "statements") < 0)
 786                 return -1;
 787         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 788                                                 YAML_BLOCK_SEQUENCE_STYLE))
 789                 return -1;
 790         if (!yaml_emitter_emit(emitter, &event))
 791                 return -1;
 792
 793         for (i = 0; i < n_stmt; ++i)
 794                 if (emit_stmt(emitter, stmts[i]) < 0)
 795                         return -1;
 796
 797         if (!yaml_sequence_end_event_initialize(&event))
 798                 return -1;
 799         if (!yaml_emitter_emit(emitter, &event))
 800                 return -1;
 801
 802         return 0;
 803 }
 804
 805 /* Print "implication" to "emitter".
 806  */
 807 static int emit_implication(yaml_emitter_t *emitter,
 808         struct pet_implication *implication)
 809 {
 810         yaml_event_t event;
 811
 812         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 813                                                 YAML_BLOCK_MAPPING_STYLE))
 814                 return -1;
 815         if (!yaml_emitter_emit(emitter, &event))
 816                 return -1;
 817
 818         if (emit_named_int(emitter, "satisfied", implication->satisfied) < 0)
 819                 return -1;
 820
 821         if (emit_named_map(emitter, "extension", implication->extension) < 0)
 822                 return -1;
 823
 824         if (!yaml_mapping_end_event_initialize(&event))
 825                 return -1;
 826         if (!yaml_emitter_emit(emitter, &event))
 827                 return -1;
 828
 829         return 0;
 830 }
 831
 832 /* Print the list of "n_implication" "implications", if any, to "emitter".
 833  */
 834 static int emit_implications(yaml_emitter_t *emitter, int n_implication,
 835         struct pet_implication **implications)
 836 {
 837         int i;
 838         yaml_event_t event;
 839
 840         if (n_implication == 0)
 841                 return 0;
 842
 843         if (emit_string(emitter, "implications") < 0)
 844                 return -1;
 845         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 846                                                 YAML_BLOCK_SEQUENCE_STYLE))
 847                 return -1;
 848         if (!yaml_emitter_emit(emitter, &event))
 849                 return -1;
 850
 851         for (i = 0; i < n_implication; ++i)
 852                 if (emit_implication(emitter, implications[i]) < 0)
 853                         return -1;
 854
 855         if (!yaml_sequence_end_event_initialize(&event))
 856                 return -1;
 857         if (!yaml_emitter_emit(emitter, &event))
 858                 return -1;
 859
 860         return 0;
 861 }
 862
 863 /* Print "independence" to "emitter".
 864  */
 865 static int emit_independence(yaml_emitter_t *emitter,
 866         struct pet_independence *independence)
 867 {
 868         yaml_event_t event;
 869
 870         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 871                                                 YAML_BLOCK_MAPPING_STYLE))
 872                 return -1;
 873         if (!yaml_emitter_emit(emitter, &event))
 874                 return -1;
 875
 876         if (emit_named_union_map(emitter, "filter", independence->filter) < 0)
 877                 return -1;
 878
 879         if (emit_named_union_set(emitter, "local", independence->local) < 0)
 880                 return -1;
 881
 882         if (!yaml_mapping_end_event_initialize(&event))
 883                 return -1;
 884         if (!yaml_emitter_emit(emitter, &event))
 885                 return -1;
 886
 887         return 0;
 888 }
 889
 890 /* Print the list of "n_independence" "independences", if any, to "emitter".
 891  */
 892 static int emit_independences(yaml_emitter_t *emitter, int n_independence,
 893         struct pet_independence **independences)
 894 {
 895         int i;
 896         yaml_event_t event;
 897
 898         if (n_independence == 0)
 899                 return 0;
 900
 901         if (emit_string(emitter, "independences") < 0)
 902                 return -1;
 903         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 904                                                 YAML_BLOCK_SEQUENCE_STYLE))
 905                 return -1;
 906         if (!yaml_emitter_emit(emitter, &event))
 907                 return -1;
 908
 909         for (i = 0; i < n_independence; ++i)
 910                 if (emit_independence(emitter, independences[i]) < 0)
 911                         return -1;
 912
 913         if (!yaml_sequence_end_event_initialize(&event))
 914                 return -1;
 915         if (!yaml_emitter_emit(emitter, &event))
 916                 return -1;
 917
 918         return 0;
 919 }
 920
 921 static int emit_scop(yaml_emitter_t *emitter, struct pet_scop *scop)
 922 {
 923         yaml_event_t event;
 924
 925         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 926                                                 YAML_BLOCK_MAPPING_STYLE))
 927                 return -1;
 928         if (!yaml_emitter_emit(emitter, &event))
 929                 return -1;
 930
 931         if (emit_named_unsigned(emitter,
 932                                 "start", pet_loc_get_start(scop->loc)) < 0)
 933                 return -1;
 934         if (emit_named_unsigned(emitter, "end", pet_loc_get_end(scop->loc)) < 0)
 935                 return -1;
 936         if (emit_named_string(emitter,
 937                                 "indent", pet_loc_get_indent(scop->loc)) < 0)
 938                 return -1;
 939         if (emit_string(emitter, "context") < 0)
 940                 return -1;
 941         if (emit_set(emitter, scop->context) < 0)
 942                 return -1;
 943         if (!isl_set_plain_is_universe(scop->context_value) &&
 944             emit_named_set(emitter, "context_value", scop->context_value) < 0)
 945                 return -1;
 946
 947         if (emit_types(emitter, scop->n_type, scop->types) < 0)
 948                 return -1;
 949         if (emit_arrays(emitter, scop->n_array, scop->arrays) < 0)
 950                 return -1;
 951
 952         if (emit_statements(emitter, scop->n_stmt, scop->stmts) < 0)
 953                 return -1;
 954
 955         if (emit_implications(emitter, scop->n_implication,
 956                                 scop->implications) < 0)
 957                 return -1;
 958
 959         if (emit_independences(emitter, scop->n_independence,
 960                                 scop->independences) < 0)
 961                 return -1;
 962
 963         if (!yaml_mapping_end_event_initialize(&event))
 964                 return -1;
 965         if (!yaml_emitter_emit(emitter, &event))
 966                 return -1;
 967
 968         return 0;
 969 }
 970
 971 /* Print a YAML serialization of "scop" to "out".
 972  */
 973 int pet_scop_emit(FILE *out, struct pet_scop *scop)
 974 {
 975         yaml_emitter_t emitter;
 976         yaml_event_t event;
 977
 978         yaml_emitter_initialize(&emitter);
 979
 980         yaml_emitter_set_output_file(&emitter, out);
 981
 982         yaml_stream_start_event_initialize(&event, YAML_UTF8_ENCODING);
 983         if (!yaml_emitter_emit(&emitter, &event))
 984                 goto error;
 985
 986         if (!yaml_document_start_event_initialize(&event, NULL, NULL, NULL, 1))
 987                 goto error;
 988         if (!yaml_emitter_emit(&emitter, &event))
 989                 goto error;
 990
 991         if (emit_scop(&emitter, scop) < 0)
 992                 goto error;
 993
 994         if (!yaml_document_end_event_initialize(&event, 1))
 995                 goto error;
 996         if (!yaml_emitter_emit(&emitter, &event))
 997                 goto error;
 998
 999         yaml_stream_end_event_initialize(&event);
1000         if (!yaml_emitter_emit(&emitter, &event))
1001                 goto error;
1002
1003         yaml_emitter_delete(&emitter);
1004         return 0;
1005 error:
1006         yaml_emitter_delete(&emitter);
1007         return -1;
1008 }