parse.c

   1 /*
   2  * Copyright 2011 Leiden University. All rights reserved.
   3  *
   4  * Redistribution and use in source and binary forms, with or without
   5  * modification, are permitted provided that the following conditions
   6  * are met:
   7  *
   8  *    1. Redistributions of source code must retain the above copyright
   9  *       notice, this list of conditions and the following disclaimer.
  10  *
  11  *    2. Redistributions in binary form must reproduce the above
  12  *       copyright notice, this list of conditions and the following
  13  *       disclaimer in the documentation and/or other materials provided
  14  *       with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY LEIDEN UNIVERSITY ''AS IS'' AND ANY
  17  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  18  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL LEIDEN UNIVERSITY OR
  20  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  21  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  22  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
  23  * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  26  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  *
  28  * The views and conclusions contained in the software and documentation
  29  * are those of the authors and should not be interpreted as
  30  * representing official policies, either expressed or implied, of
  31  * Leiden University.
  32  */
  33
  34 #include <stdlib.h>
  35 #include <yaml.h>
  36
  37 #include "scop.h"
  38 #include "scop_yaml.h"
  39
  40 static char *extract_string(isl_ctx *ctx, yaml_document_t *document,
  41         yaml_node_t *node)
  42 {
  43         if (node->type != YAML_SCALAR_NODE)
  44                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  45                         return NULL);
  46
  47         return strdup((char *) node->data.scalar.value);
  48 }
  49
  50 static int extract_int(isl_ctx *ctx, yaml_document_t *document,
  51         yaml_node_t *node)
  52 {
  53         if (node->type != YAML_SCALAR_NODE)
  54                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  55                         return -1);
  56
  57         return atoi((char *) node->data.scalar.value);
  58 }
  59
  60 static double extract_double(isl_ctx *ctx, yaml_document_t *document,
  61         yaml_node_t *node)
  62 {
  63         if (node->type != YAML_SCALAR_NODE)
  64                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  65                         return -1);
  66
  67         return strtod((char *) node->data.scalar.value, NULL);
  68 }
  69
  70 static enum pet_expr_type extract_type(isl_ctx *ctx, yaml_document_t *document,
  71         yaml_node_t *node)
  72 {
  73         if (node->type != YAML_SCALAR_NODE)
  74                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  75                         return -1);
  76
  77         return pet_str_type((char *) node->data.scalar.value);
  78 }
  79
  80 static enum pet_op_type extract_op(isl_ctx *ctx, yaml_document_t *document,
  81         yaml_node_t *node)
  82 {
  83         if (node->type != YAML_SCALAR_NODE)
  84                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  85                         return -1);
  86
  87         return pet_str_op((char *) node->data.scalar.value);
  88 }
  89
  90 static __isl_give isl_set *extract_set(isl_ctx *ctx, yaml_document_t *document,
  91         yaml_node_t *node)
  92 {
  93         if (node->type != YAML_SCALAR_NODE)
  94                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  95                         return NULL);
  96
  97         return isl_set_read_from_str(ctx, (char *) node->data.scalar.value);
  98 }
  99
 100 static __isl_give isl_map *extract_map(isl_ctx *ctx, yaml_document_t *document,
 101         yaml_node_t *node)
 102 {
 103         if (node->type != YAML_SCALAR_NODE)
 104                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
 105                         return NULL);
 106
 107         return isl_map_read_from_str(ctx, (char *) node->data.scalar.value);
 108 }
 109
 110 static struct pet_array *extract_array(isl_ctx *ctx, yaml_document_t *document,
 111         yaml_node_t *node)
 112 {
 113         struct pet_array *array;
 114         yaml_node_pair_t * pair;
 115
 116         if (node->type != YAML_MAPPING_NODE)
 117                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 118                         return NULL);
 119
 120         array = isl_calloc_type(ctx, struct pet_array);
 121         if (!array)
 122                 return NULL;
 123
 124         for (pair = node->data.mapping.pairs.start;
 125              pair < node->data.mapping.pairs.top; ++pair) {
 126                 yaml_node_t *key, *value;
 127
 128                 key = yaml_document_get_node(document, pair->key);
 129                 value = yaml_document_get_node(document, pair->value);
 130
 131                 if (key->type != YAML_SCALAR_NODE)
 132                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 133                                 return pet_array_free(array));
 134
 135                 if (!strcmp((char *) key->data.scalar.value, "context"))
 136                         array->context = extract_set(ctx, document, value);
 137                 if (!strcmp((char *) key->data.scalar.value, "extent"))
 138                         array->extent = extract_set(ctx, document, value);
 139                 if (!strcmp((char *) key->data.scalar.value, "value_bounds"))
 140                         array->value_bounds = extract_set(ctx, document, value);
 141                 if (!strcmp((char *) key->data.scalar.value, "element_type"))
 142                         array->element_type =
 143                                         extract_string(ctx, document, value);
 144                 if (!strcmp((char *) key->data.scalar.value, "element_size"))
 145                         array->element_size = extract_int(ctx, document, value);
 146                 if (!strcmp((char *) key->data.scalar.value, "live_out"))
 147                         array->live_out = extract_int(ctx, document, value);
 148                 if (!strcmp((char *) key->data.scalar.value,
 149                                 "uniquely_defined"))
 150                         array->uniquely_defined =
 151                                         extract_int(ctx, document, value);
 152                 if (!strcmp((char *) key->data.scalar.value, "declared"))
 153                         array->declared = extract_int(ctx, document, value);
 154                 if (!strcmp((char *) key->data.scalar.value, "exposed"))
 155                         array->exposed = extract_int(ctx, document, value);
 156         }
 157
 158         return array;
 159 }
 160
 161 static struct pet_scop *extract_arrays(isl_ctx *ctx, yaml_document_t *document,
 162         yaml_node_t *node, struct pet_scop *scop)
 163 {
 164         int i;
 165         yaml_node_item_t *item;
 166
 167         if (node->type != YAML_SEQUENCE_NODE)
 168                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 169                         return NULL);
 170
 171         scop->n_array = node->data.sequence.items.top
 172                                 - node->data.sequence.items.start;
 173         scop->arrays = isl_calloc_array(ctx, struct pet_array *, scop->n_array);
 174         if (!scop->arrays)
 175                 return pet_scop_free(scop);
 176
 177         for (item = node->data.sequence.items.start, i = 0;
 178              item < node->data.sequence.items.top; ++item, ++i) {
 179                 yaml_node_t *n;
 180
 181                 n = yaml_document_get_node(document, *item);
 182                 scop->arrays[i] = extract_array(ctx, document, n);
 183                 if (!scop->arrays[i])
 184                         return pet_scop_free(scop);
 185         }
 186
 187         return scop;
 188 }
 189
 190 static struct pet_expr *extract_expr(isl_ctx *ctx, yaml_document_t *document,
 191         yaml_node_t *node);
 192
 193 static struct pet_expr *extract_arguments(isl_ctx *ctx,
 194         yaml_document_t *document, yaml_node_t *node, struct pet_expr *expr)
 195 {
 196         int i;
 197         yaml_node_item_t *item;
 198
 199         if (node->type != YAML_SEQUENCE_NODE)
 200                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 201                         return pet_expr_free(expr));
 202
 203         expr->n_arg = node->data.sequence.items.top
 204                                 - node->data.sequence.items.start;
 205         expr->args = isl_calloc_array(ctx, struct pet_expr *, expr->n_arg);
 206         if (!expr->args)
 207                 return pet_expr_free(expr);
 208
 209         for (item = node->data.sequence.items.start, i = 0;
 210              item < node->data.sequence.items.top; ++item, ++i) {
 211                 yaml_node_t *n;
 212
 213                 n = yaml_document_get_node(document, *item);
 214                 expr->args[i] = extract_expr(ctx, document, n);
 215                 if (!expr->args[i])
 216                         return pet_expr_free(expr);
 217         }
 218
 219         return expr;
 220 }
 221
 222 static struct pet_expr *extract_expr(isl_ctx *ctx, yaml_document_t *document,
 223         yaml_node_t *node)
 224 {
 225         struct pet_expr *expr;
 226         yaml_node_pair_t * pair;
 227
 228         if (node->type != YAML_MAPPING_NODE)
 229                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 230                         return NULL);
 231
 232         expr = isl_calloc_type(ctx, struct pet_expr);
 233         if (!expr)
 234                 return NULL;
 235
 236         for (pair = node->data.mapping.pairs.start;
 237              pair < node->data.mapping.pairs.top; ++pair) {
 238                 yaml_node_t *key, *value;
 239
 240                 key = yaml_document_get_node(document, pair->key);
 241                 value = yaml_document_get_node(document, pair->value);
 242
 243                 if (key->type != YAML_SCALAR_NODE)
 244                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 245                                 return pet_expr_free(expr));
 246
 247                 if (!strcmp((char *) key->data.scalar.value, "type"))
 248                         expr->type = extract_type(ctx, document, value);
 249
 250                 if (!strcmp((char *) key->data.scalar.value, "value"))
 251                         expr->d.val = extract_double(ctx, document, value);
 252                 if (!strcmp((char *) key->data.scalar.value, "string"))
 253                         expr->d.s = extract_string(ctx, document, value);
 254
 255                 if (!strcmp((char *) key->data.scalar.value, "relation"))
 256                         expr->acc.access = extract_map(ctx, document, value);
 257                 if (!strcmp((char *) key->data.scalar.value, "read"))
 258                         expr->acc.read = extract_int(ctx, document, value);
 259                 if (!strcmp((char *) key->data.scalar.value, "write"))
 260                         expr->acc.write = extract_int(ctx, document, value);
 261
 262                 if (!strcmp((char *) key->data.scalar.value, "operation"))
 263                         expr->op = extract_op(ctx, document, value);
 264
 265                 if (!strcmp((char *) key->data.scalar.value, "name"))
 266                         expr->name = extract_string(ctx, document, value);
 267
 268                 if (!strcmp((char *) key->data.scalar.value, "arguments"))
 269                         expr = extract_arguments(ctx, document, value, expr);
 270                 if (!expr)
 271                         return NULL;
 272         }
 273
 274         return expr;
 275 }
 276
 277 static struct pet_stmt *extract_stmt_arguments(isl_ctx *ctx,
 278         yaml_document_t *document, yaml_node_t *node, struct pet_stmt *stmt)
 279 {
 280         int i;
 281         yaml_node_item_t *item;
 282
 283         if (node->type != YAML_SEQUENCE_NODE)
 284                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 285                         return pet_stmt_free(stmt));
 286
 287         stmt->n_arg = node->data.sequence.items.top
 288                                 - node->data.sequence.items.start;
 289         stmt->args = isl_calloc_array(ctx, struct pet_expr *, stmt->n_arg);
 290         if (!stmt->args)
 291                 return pet_stmt_free(stmt);
 292
 293         for (item = node->data.sequence.items.start, i = 0;
 294              item < node->data.sequence.items.top; ++item, ++i) {
 295                 yaml_node_t *n;
 296
 297                 n = yaml_document_get_node(document, *item);
 298                 stmt->args[i] = extract_expr(ctx, document, n);
 299                 if (!stmt->args[i])
 300                         return pet_stmt_free(stmt);
 301         }
 302
 303         return stmt;
 304 }
 305
 306 static struct pet_stmt *extract_stmt(isl_ctx *ctx, yaml_document_t *document,
 307         yaml_node_t *node)
 308 {
 309         struct pet_stmt *stmt;
 310         yaml_node_pair_t * pair;
 311
 312         if (node->type != YAML_MAPPING_NODE)
 313                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 314                         return NULL);
 315
 316         stmt = isl_calloc_type(ctx, struct pet_stmt);
 317         if (!stmt)
 318                 return NULL;
 319
 320         for (pair = node->data.mapping.pairs.start;
 321              pair < node->data.mapping.pairs.top; ++pair) {
 322                 yaml_node_t *key, *value;
 323
 324                 key = yaml_document_get_node(document, pair->key);
 325                 value = yaml_document_get_node(document, pair->value);
 326
 327                 if (key->type != YAML_SCALAR_NODE)
 328                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 329                                 return pet_stmt_free(stmt));
 330
 331                 if (!strcmp((char *) key->data.scalar.value, "line"))
 332                         stmt->line = extract_int(ctx, document, value);
 333                 if (!strcmp((char *) key->data.scalar.value, "domain"))
 334                         stmt->domain = extract_set(ctx, document, value);
 335                 if (!strcmp((char *) key->data.scalar.value, "schedule"))
 336                         stmt->schedule = extract_map(ctx, document, value);
 337                 if (!strcmp((char *) key->data.scalar.value, "body"))
 338                         stmt->body = extract_expr(ctx, document, value);
 339
 340                 if (!strcmp((char *) key->data.scalar.value, "arguments"))
 341                         stmt = extract_stmt_arguments(ctx, document,
 342                                                         value, stmt);
 343                 if (!stmt)
 344                         return NULL;
 345         }
 346
 347         return stmt;
 348 }
 349
 350 static struct pet_scop *extract_statements(isl_ctx *ctx,
 351         yaml_document_t *document, yaml_node_t *node, struct pet_scop *scop)
 352 {
 353         int i;
 354         yaml_node_item_t *item;
 355
 356         if (node->type != YAML_SEQUENCE_NODE)
 357                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 358                         return NULL);
 359
 360         scop->n_stmt = node->data.sequence.items.top
 361                                 - node->data.sequence.items.start;
 362         scop->stmts = isl_calloc_array(ctx, struct pet_stmt *, scop->n_stmt);
 363         if (!scop->stmts)
 364                 return pet_scop_free(scop);
 365
 366         for (item = node->data.sequence.items.start, i = 0;
 367              item < node->data.sequence.items.top; ++item, ++i) {
 368                 yaml_node_t *n;
 369
 370                 n = yaml_document_get_node(document, *item);
 371                 scop->stmts[i] = extract_stmt(ctx, document, n);
 372                 if (!scop->stmts[i])
 373                         return pet_scop_free(scop);
 374         }
 375
 376         return scop;
 377 }
 378
 379 static struct pet_scop *extract_scop(isl_ctx *ctx, yaml_document_t *document,
 380         yaml_node_t *node)
 381 {
 382         struct pet_scop *scop;
 383         yaml_node_pair_t * pair;
 384
 385         if (!node)
 386                 return NULL;
 387
 388         if (node->type != YAML_MAPPING_NODE)
 389                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 390                         return NULL);
 391
 392         scop = pet_scop_alloc(ctx);
 393         if (!scop)
 394                 return NULL;
 395
 396         for (pair = node->data.mapping.pairs.start;
 397              pair < node->data.mapping.pairs.top; ++pair) {
 398                 yaml_node_t *key, *value;
 399
 400                 key = yaml_document_get_node(document, pair->key);
 401                 value = yaml_document_get_node(document, pair->value);
 402
 403                 if (key->type != YAML_SCALAR_NODE)
 404                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 405                                 return pet_scop_free(scop));
 406                 if (!strcmp((char *) key->data.scalar.value, "context"))
 407                         scop->context = extract_set(ctx, document, value);
 408                 if (!strcmp((char *) key->data.scalar.value, "context_value"))
 409                         scop->context_value = extract_set(ctx, document, value);
 410                 if (!strcmp((char *) key->data.scalar.value, "arrays"))
 411                         scop = extract_arrays(ctx, document, value, scop);
 412                 if (!strcmp((char *) key->data.scalar.value, "statements"))
 413                         scop = extract_statements(ctx, document, value, scop);
 414                 if (!scop)
 415                         return NULL;
 416         }
 417
 418         if (!scop->context_value) {
 419                 isl_space *space = isl_space_params_alloc(ctx, 0);
 420                 scop->context_value = isl_set_universe(space);
 421                 if (!scop->context_value)
 422                         return pet_scop_free(scop);
 423         }
 424
 425         return scop;
 426 }
 427
 428 /* Extract a pet_scop from the YAML description in "in".
 429  */
 430 struct pet_scop *pet_scop_parse(isl_ctx *ctx, FILE *in)
 431 {
 432         struct pet_scop *scop = NULL;
 433         yaml_parser_t parser;
 434         yaml_node_t *root;
 435         yaml_document_t document = { 0 };
 436
 437         yaml_parser_initialize(&parser);
 438
 439         yaml_parser_set_input_file(&parser, in);
 440
 441         if (!yaml_parser_load(&parser, &document))
 442                 goto error;
 443
 444         root = yaml_document_get_root_node(&document);
 445
 446         scop = extract_scop(ctx, &document, root);
 447
 448         yaml_document_delete(&document);
 449
 450         yaml_parser_delete(&parser);
 451
 452         return scop;
 453 error:
 454         yaml_parser_delete(&parser);
 455         pet_scop_free(scop);
 456         return NULL;
 457 }