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 /* Print the fields of the access expression "expr" to "emitter".
 473  *
 474  * If the depth of the access is equal to the depth that can be derived from
 475  * the index expression, then there is no need to print it.
 476  */
 477 static int emit_access_expr(yaml_emitter_t *emitter, __isl_keep pet_expr *expr)
 478 {
 479         int depth;
 480
 481         if (expr->acc.access) {
 482                 if (emit_string(emitter, "relation") < 0)
 483                         return -1;
 484                 if (emit_map(emitter, expr->acc.access) < 0)
 485                         return -1;
 486         }
 487         if (emit_named_multi_pw_aff(emitter, "index", expr->acc.index) < 0)
 488                 return -1;
 489         depth = isl_multi_pw_aff_dim(expr->acc.index, isl_dim_out);
 490         if (expr->acc.depth != depth &&
 491             emit_named_int(emitter, "depth", expr->acc.depth) < 0)
 492                 return -1;
 493         if (expr->acc.ref_id &&
 494             emit_named_id(emitter, "reference", expr->acc.ref_id) < 0)
 495                 return -1;
 496         if (expr->acc.kill) {
 497                 if (emit_named_unsigned(emitter, "kill", 1) < 0)
 498                         return -1;
 499         } else {
 500                 if (emit_string(emitter, "read") < 0)
 501                         return -1;
 502                 if (emit_int(emitter, expr->acc.read) < 0)
 503                         return -1;
 504                 if (emit_string(emitter, "write") < 0)
 505                         return -1;
 506                 if (emit_int(emitter, expr->acc.write) < 0)
 507                         return -1;
 508         }
 509
 510         return 0;
 511 }
 512
 513 static int emit_expr(yaml_emitter_t *emitter, __isl_keep pet_expr *expr)
 514 {
 515         yaml_event_t event;
 516
 517         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 518                                                 YAML_BLOCK_MAPPING_STYLE))
 519                 return -1;
 520         if (!yaml_emitter_emit(emitter, &event))
 521                 return -1;
 522
 523         if (emit_string(emitter, "type") < 0)
 524                 return -1;
 525         if (emit_expr_type(emitter, expr->type) < 0)
 526                 return -1;
 527
 528         switch (expr->type) {
 529         case pet_expr_error:
 530                 return -1;
 531         case pet_expr_int:
 532                 if (emit_named_val(emitter, "value", expr->i) < 0)
 533                         return -1;
 534                 break;
 535         case pet_expr_double:
 536                 if (emit_string(emitter, "value") < 0)
 537                         return -1;
 538                 if (emit_double(emitter, expr->d.val) < 0)
 539                         return -1;
 540                 if (emit_string(emitter, "string") < 0)
 541                         return -1;
 542                 if (emit_string(emitter, expr->d.s) < 0)
 543                         return -1;
 544                 break;
 545         case pet_expr_access:
 546                 if (emit_access_expr(emitter, expr) < 0)
 547                         return -1;
 548                 break;
 549         case pet_expr_op:
 550                 if (emit_string(emitter, "operation") < 0)
 551                         return -1;
 552                 if (emit_string(emitter, pet_op_str(expr->op)) < 0)
 553                         return -1;
 554                 break;
 555         case pet_expr_call:
 556                 if (emit_string(emitter, "name") < 0)
 557                         return -1;
 558                 if (emit_string(emitter, expr->name) < 0)
 559                         return -1;
 560                 break;
 561         case pet_expr_cast:
 562                 if (emit_string(emitter, "type_name") < 0)
 563                         return -1;
 564                 if (emit_string(emitter, expr->type_name) < 0)
 565                         return -1;
 566                 break;
 567         }
 568
 569         if (expr->n_arg > 0) {
 570                 int i;
 571
 572                 if (emit_string(emitter, "arguments") < 0)
 573                         return -1;
 574                 if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 575                                                     YAML_BLOCK_SEQUENCE_STYLE))
 576                         return -1;
 577                 if (!yaml_emitter_emit(emitter, &event))
 578                         return -1;
 579
 580                 for (i = 0; i < expr->n_arg; ++i)
 581                         if (emit_expr(emitter, expr->args[i]) < 0)
 582                                 return -1;
 583
 584                 if (!yaml_sequence_end_event_initialize(&event))
 585                         return -1;
 586                 if (!yaml_emitter_emit(emitter, &event))
 587                         return -1;
 588         }
 589
 590         if (!yaml_mapping_end_event_initialize(&event))
 591                 return -1;
 592         if (!yaml_emitter_emit(emitter, &event))
 593                 return -1;
 594
 595         return 0;
 596 }
 597
 598 /* Print the string "name" and the expression "expr" to "emitter".
 599  */
 600 static int emit_named_expr(yaml_emitter_t *emitter, const char *name,
 601          __isl_keep pet_expr *expr)
 602 {
 603         if (emit_string(emitter, name) < 0)
 604                 return -1;
 605         if (emit_expr(emitter, expr) < 0)
 606                 return -1;
 607         return 0;
 608 }
 609
 610 /* Print "type" to "emitter".
 611  */
 612 static int emit_tree_type(yaml_emitter_t *emitter, enum pet_tree_type type)
 613 {
 614         if (emit_string(emitter, pet_tree_type_str(type)) < 0)
 615                 return -1;
 616         return 0;
 617 }
 618
 619 /* Recursively print "tree" to "emitter".
 620  */
 621 static int emit_tree(yaml_emitter_t *emitter, __isl_keep pet_tree *tree)
 622 {
 623         yaml_event_t event;
 624         int i;
 625
 626         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 627                                                 YAML_BLOCK_MAPPING_STYLE))
 628                 return -1;
 629         if (!yaml_emitter_emit(emitter, &event))
 630                 return -1;
 631
 632         if (emit_string(emitter, "type") < 0)
 633                 return -1;
 634         if (emit_tree_type(emitter, tree->type) < 0)
 635                 return -1;
 636
 637         switch (tree->type) {
 638         case pet_tree_error:
 639                 return -1;
 640         case pet_tree_block:
 641                 if (emit_named_int(emitter, "block", tree->u.b.block) < 0)
 642                         return -1;
 643                 if (tree->u.b.n == 0)
 644                         break;
 645
 646                 if (emit_string(emitter, "children") < 0)
 647                         return -1;
 648                 if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 649                                                     YAML_BLOCK_SEQUENCE_STYLE))
 650                         return -1;
 651                 if (!yaml_emitter_emit(emitter, &event))
 652                         return -1;
 653
 654                 for (i = 0; i < tree->u.b.n; ++i)
 655                         if (emit_tree(emitter, tree->u.b.child[i]) < 0)
 656                                 return -1;
 657
 658                 if (!yaml_sequence_end_event_initialize(&event))
 659                         return -1;
 660                 if (!yaml_emitter_emit(emitter, &event))
 661                         return -1;
 662                 break;
 663         case pet_tree_break:
 664         case pet_tree_continue:
 665                 break;
 666         case pet_tree_decl:
 667                 if (emit_named_expr(emitter, "variable", tree->u.d.var) < 0)
 668                         return -1;
 669                 break;
 670         case pet_tree_decl_init:
 671                 if (emit_named_expr(emitter, "variable", tree->u.d.var) < 0)
 672                         return -1;
 673                 if (emit_named_expr(emitter,
 674                                     "initialization", tree->u.d.init) < 0)
 675                         return -1;
 676                 break;
 677         case pet_tree_expr:
 678                 if (emit_named_expr(emitter, "expr", tree->u.e.expr) < 0)
 679                         return -1;
 680                 break;
 681         case pet_tree_for:
 682                 if (tree->u.l.independent)
 683                         if (emit_named_int(emitter, "independent", 1) < 0)
 684                                 return -1;
 685                 if (emit_named_int(emitter, "declared", tree->u.l.declared) < 0)
 686                         return -1;
 687                 if (emit_named_expr(emitter, "variable", tree->u.l.iv) < 0)
 688                         return -1;
 689                 if (emit_named_expr(emitter,
 690                                     "initialization", tree->u.l.init) < 0)
 691                         return -1;
 692                 if (emit_named_expr(emitter, "condition", tree->u.l.cond) < 0)
 693                         return -1;
 694                 if (emit_named_expr(emitter, "increment", tree->u.l.inc) < 0)
 695                         return -1;
 696                 if (emit_string(emitter, "body") < 0)
 697                         return -1;
 698                 if (emit_tree(emitter, tree->u.l.body) < 0)
 699                         return -1;
 700                 break;
 701         case pet_tree_while:
 702                 if (emit_named_expr(emitter, "condition", tree->u.l.cond) < 0)
 703                         return -1;
 704                 if (emit_string(emitter, "body") < 0)
 705                         return -1;
 706                 if (emit_tree(emitter, tree->u.l.body) < 0)
 707                         return -1;
 708                 break;
 709         case pet_tree_infinite_loop:
 710                 if (emit_string(emitter, "body") < 0)
 711                         return -1;
 712                 if (emit_tree(emitter, tree->u.l.body) < 0)
 713                         return -1;
 714                 break;
 715         case pet_tree_if:
 716                 if (emit_named_expr(emitter, "condition", tree->u.i.cond) < 0)
 717                         return -1;
 718                 if (emit_string(emitter, "then") < 0)
 719                         return -1;
 720                 if (emit_tree(emitter, tree->u.i.then_body) < 0)
 721                         return -1;
 722                 break;
 723         case pet_tree_if_else:
 724                 if (emit_named_expr(emitter, "condition", tree->u.i.cond) < 0)
 725                         return -1;
 726                 if (emit_string(emitter, "then") < 0)
 727                         return -1;
 728                 if (emit_tree(emitter, tree->u.i.then_body) < 0)
 729                         return -1;
 730                 if (emit_string(emitter, "else") < 0)
 731                         return -1;
 732                 if (emit_tree(emitter, tree->u.i.else_body) < 0)
 733                         return -1;
 734                 break;
 735         }
 736
 737         if (!yaml_mapping_end_event_initialize(&event))
 738                 return -1;
 739         if (!yaml_emitter_emit(emitter, &event))
 740                 return -1;
 741
 742         return 0;
 743 }
 744
 745 static int emit_stmt(yaml_emitter_t *emitter, struct pet_stmt *stmt)
 746 {
 747         yaml_event_t event;
 748
 749         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 750                                                 YAML_BLOCK_MAPPING_STYLE))
 751                 return -1;
 752         if (!yaml_emitter_emit(emitter, &event))
 753                 return -1;
 754
 755         if (emit_string(emitter, "line") < 0)
 756                 return -1;
 757         if (emit_int(emitter, pet_loc_get_line(stmt->loc)) < 0)
 758                 return -1;
 759
 760         if (emit_string(emitter, "domain") < 0)
 761                 return -1;
 762         if (emit_set(emitter, stmt->domain) < 0)
 763                 return -1;
 764
 765         if (emit_string(emitter, "schedule") < 0)
 766                 return -1;
 767         if (emit_map(emitter, stmt->schedule) < 0)
 768                 return -1;
 769
 770         if (emit_string(emitter, "body") < 0)
 771                 return -1;
 772         if (emit_tree(emitter, stmt->body) < 0)
 773                 return -1;
 774
 775         if (stmt->n_arg > 0) {
 776                 int i;
 777
 778                 if (emit_string(emitter, "arguments") < 0)
 779                         return -1;
 780                 if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 781                                                     YAML_BLOCK_SEQUENCE_STYLE))
 782                         return -1;
 783                 if (!yaml_emitter_emit(emitter, &event))
 784                         return -1;
 785
 786                 for (i = 0; i < stmt->n_arg; ++i)
 787                         if (emit_expr(emitter, stmt->args[i]) < 0)
 788                                 return -1;
 789
 790                 if (!yaml_sequence_end_event_initialize(&event))
 791                         return -1;
 792                 if (!yaml_emitter_emit(emitter, &event))
 793                         return -1;
 794         }
 795
 796         if (!yaml_mapping_end_event_initialize(&event))
 797                 return -1;
 798         if (!yaml_emitter_emit(emitter, &event))
 799                 return -1;
 800
 801         return 0;
 802 }
 803
 804 static int emit_statements(yaml_emitter_t *emitter, int n_stmt,
 805         struct pet_stmt **stmts)
 806 {
 807         int i;
 808         yaml_event_t event;
 809
 810         if (emit_string(emitter, "statements") < 0)
 811                 return -1;
 812         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 813                                                 YAML_BLOCK_SEQUENCE_STYLE))
 814                 return -1;
 815         if (!yaml_emitter_emit(emitter, &event))
 816                 return -1;
 817
 818         for (i = 0; i < n_stmt; ++i)
 819                 if (emit_stmt(emitter, stmts[i]) < 0)
 820                         return -1;
 821
 822         if (!yaml_sequence_end_event_initialize(&event))
 823                 return -1;
 824         if (!yaml_emitter_emit(emitter, &event))
 825                 return -1;
 826
 827         return 0;
 828 }
 829
 830 /* Print "implication" to "emitter".
 831  */
 832 static int emit_implication(yaml_emitter_t *emitter,
 833         struct pet_implication *implication)
 834 {
 835         yaml_event_t event;
 836
 837         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 838                                                 YAML_BLOCK_MAPPING_STYLE))
 839                 return -1;
 840         if (!yaml_emitter_emit(emitter, &event))
 841                 return -1;
 842
 843         if (emit_named_int(emitter, "satisfied", implication->satisfied) < 0)
 844                 return -1;
 845
 846         if (emit_named_map(emitter, "extension", implication->extension) < 0)
 847                 return -1;
 848
 849         if (!yaml_mapping_end_event_initialize(&event))
 850                 return -1;
 851         if (!yaml_emitter_emit(emitter, &event))
 852                 return -1;
 853
 854         return 0;
 855 }
 856
 857 /* Print the list of "n_implication" "implications", if any, to "emitter".
 858  */
 859 static int emit_implications(yaml_emitter_t *emitter, int n_implication,
 860         struct pet_implication **implications)
 861 {
 862         int i;
 863         yaml_event_t event;
 864
 865         if (n_implication == 0)
 866                 return 0;
 867
 868         if (emit_string(emitter, "implications") < 0)
 869                 return -1;
 870         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 871                                                 YAML_BLOCK_SEQUENCE_STYLE))
 872                 return -1;
 873         if (!yaml_emitter_emit(emitter, &event))
 874                 return -1;
 875
 876         for (i = 0; i < n_implication; ++i)
 877                 if (emit_implication(emitter, implications[i]) < 0)
 878                         return -1;
 879
 880         if (!yaml_sequence_end_event_initialize(&event))
 881                 return -1;
 882         if (!yaml_emitter_emit(emitter, &event))
 883                 return -1;
 884
 885         return 0;
 886 }
 887
 888 /* Print "independence" to "emitter".
 889  */
 890 static int emit_independence(yaml_emitter_t *emitter,
 891         struct pet_independence *independence)
 892 {
 893         yaml_event_t event;
 894
 895         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 896                                                 YAML_BLOCK_MAPPING_STYLE))
 897                 return -1;
 898         if (!yaml_emitter_emit(emitter, &event))
 899                 return -1;
 900
 901         if (emit_named_union_map(emitter, "filter", independence->filter) < 0)
 902                 return -1;
 903
 904         if (emit_named_union_set(emitter, "local", independence->local) < 0)
 905                 return -1;
 906
 907         if (!yaml_mapping_end_event_initialize(&event))
 908                 return -1;
 909         if (!yaml_emitter_emit(emitter, &event))
 910                 return -1;
 911
 912         return 0;
 913 }
 914
 915 /* Print the list of "n_independence" "independences", if any, to "emitter".
 916  */
 917 static int emit_independences(yaml_emitter_t *emitter, int n_independence,
 918         struct pet_independence **independences)
 919 {
 920         int i;
 921         yaml_event_t event;
 922
 923         if (n_independence == 0)
 924                 return 0;
 925
 926         if (emit_string(emitter, "independences") < 0)
 927                 return -1;
 928         if (!yaml_sequence_start_event_initialize(&event, NULL, NULL, 1,
 929                                                 YAML_BLOCK_SEQUENCE_STYLE))
 930                 return -1;
 931         if (!yaml_emitter_emit(emitter, &event))
 932                 return -1;
 933
 934         for (i = 0; i < n_independence; ++i)
 935                 if (emit_independence(emitter, independences[i]) < 0)
 936                         return -1;
 937
 938         if (!yaml_sequence_end_event_initialize(&event))
 939                 return -1;
 940         if (!yaml_emitter_emit(emitter, &event))
 941                 return -1;
 942
 943         return 0;
 944 }
 945
 946 static int emit_scop(yaml_emitter_t *emitter, struct pet_scop *scop)
 947 {
 948         yaml_event_t event;
 949
 950         if (!yaml_mapping_start_event_initialize(&event, NULL, NULL, 1,
 951                                                 YAML_BLOCK_MAPPING_STYLE))
 952                 return -1;
 953         if (!yaml_emitter_emit(emitter, &event))
 954                 return -1;
 955
 956         if (emit_named_unsigned(emitter,
 957                                 "start", pet_loc_get_start(scop->loc)) < 0)
 958                 return -1;
 959         if (emit_named_unsigned(emitter, "end", pet_loc_get_end(scop->loc)) < 0)
 960                 return -1;
 961         if (emit_named_string(emitter,
 962                                 "indent", pet_loc_get_indent(scop->loc)) < 0)
 963                 return -1;
 964         if (emit_string(emitter, "context") < 0)
 965                 return -1;
 966         if (emit_set(emitter, scop->context) < 0)
 967                 return -1;
 968         if (!isl_set_plain_is_universe(scop->context_value) &&
 969             emit_named_set(emitter, "context_value", scop->context_value) < 0)
 970                 return -1;
 971
 972         if (emit_types(emitter, scop->n_type, scop->types) < 0)
 973                 return -1;
 974         if (emit_arrays(emitter, scop->n_array, scop->arrays) < 0)
 975                 return -1;
 976
 977         if (emit_statements(emitter, scop->n_stmt, scop->stmts) < 0)
 978                 return -1;
 979
 980         if (emit_implications(emitter, scop->n_implication,
 981                                 scop->implications) < 0)
 982                 return -1;
 983
 984         if (emit_independences(emitter, scop->n_independence,
 985                                 scop->independences) < 0)
 986                 return -1;
 987
 988         if (!yaml_mapping_end_event_initialize(&event))
 989                 return -1;
 990         if (!yaml_emitter_emit(emitter, &event))
 991                 return -1;
 992
 993         return 0;
 994 }
 995
 996 /* Print a YAML serialization of "scop" to "out".
 997  */
 998 int pet_scop_emit(FILE *out, struct pet_scop *scop)
 999 {
1000         yaml_emitter_t emitter;
1001         yaml_event_t event;
1002
1003         yaml_emitter_initialize(&emitter);
1004
1005         yaml_emitter_set_output_file(&emitter, out);
1006
1007         yaml_stream_start_event_initialize(&event, YAML_UTF8_ENCODING);
1008         if (!yaml_emitter_emit(&emitter, &event))
1009                 goto error;
1010
1011         if (!yaml_document_start_event_initialize(&event, NULL, NULL, NULL, 1))
1012                 goto error;
1013         if (!yaml_emitter_emit(&emitter, &event))
1014                 goto error;
1015
1016         if (emit_scop(&emitter, scop) < 0)
1017                 goto error;
1018
1019         if (!yaml_document_end_event_initialize(&event, 1))
1020                 goto error;
1021         if (!yaml_emitter_emit(&emitter, &event))
1022                 goto error;
1023
1024         yaml_stream_end_event_initialize(&event);
1025         if (!yaml_emitter_emit(&emitter, &event))
1026                 goto error;
1027
1028         yaml_emitter_delete(&emitter);
1029         return 0;
1030 error:
1031         yaml_emitter_delete(&emitter);
1032         return -1;
1033 }