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 int 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, "live_out"))
 145                         array->live_out = extract_int(ctx, document, value);
 146         }
 147
 148         return array;
 149 }
 150
 151 static struct pet_scop *extract_arrays(isl_ctx *ctx, yaml_document_t *document,
 152         yaml_node_t *node, struct pet_scop *scop)
 153 {
 154         int i;
 155         yaml_node_item_t *item;
 156
 157         if (node->type != YAML_SEQUENCE_NODE)
 158                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 159                         return NULL);
 160
 161         scop->n_array = node->data.sequence.items.top
 162                                 - node->data.sequence.items.start;
 163         scop->arrays = isl_calloc_array(ctx, struct pet_array *, scop->n_array);
 164         if (!scop->arrays)
 165                 return pet_scop_free(scop);
 166
 167         for (item = node->data.sequence.items.start, i = 0;
 168              item < node->data.sequence.items.top; ++item, ++i) {
 169                 yaml_node_t *n;
 170
 171                 n = yaml_document_get_node(document, *item);
 172                 scop->arrays[i] = extract_array(ctx, document, n);
 173                 if (!scop->arrays[i])
 174                         return pet_scop_free(scop);
 175         }
 176
 177         return scop;
 178 }
 179
 180 static struct pet_expr *extract_expr(isl_ctx *ctx, yaml_document_t *document,
 181         yaml_node_t *node);
 182
 183 static struct pet_expr *extract_arguments(isl_ctx *ctx,
 184         yaml_document_t *document, yaml_node_t *node, struct pet_expr *expr)
 185 {
 186         int i;
 187         yaml_node_item_t *item;
 188
 189         if (node->type != YAML_SEQUENCE_NODE)
 190                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 191                         return pet_expr_free(expr));
 192
 193         expr->n_arg = node->data.sequence.items.top
 194                                 - node->data.sequence.items.start;
 195         expr->args = isl_calloc_array(ctx, struct pet_expr *, expr->n_arg);
 196         if (!expr->args)
 197                 return pet_expr_free(expr);
 198
 199         for (item = node->data.sequence.items.start, i = 0;
 200              item < node->data.sequence.items.top; ++item, ++i) {
 201                 yaml_node_t *n;
 202
 203                 n = yaml_document_get_node(document, *item);
 204                 expr->args[i] = extract_expr(ctx, document, n);
 205                 if (!expr->args[i])
 206                         return pet_expr_free(expr);
 207         }
 208
 209         return expr;
 210 }
 211
 212 static struct pet_expr *extract_expr(isl_ctx *ctx, yaml_document_t *document,
 213         yaml_node_t *node)
 214 {
 215         struct pet_expr *expr;
 216         yaml_node_pair_t * pair;
 217
 218         if (node->type != YAML_MAPPING_NODE)
 219                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 220                         return NULL);
 221
 222         expr = isl_calloc_type(ctx, struct pet_expr);
 223         if (!expr)
 224                 return NULL;
 225
 226         for (pair = node->data.mapping.pairs.start;
 227              pair < node->data.mapping.pairs.top; ++pair) {
 228                 yaml_node_t *key, *value;
 229
 230                 key = yaml_document_get_node(document, pair->key);
 231                 value = yaml_document_get_node(document, pair->value);
 232
 233                 if (key->type != YAML_SCALAR_NODE)
 234                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 235                                 return pet_expr_free(expr));
 236
 237                 if (!strcmp((char *) key->data.scalar.value, "type"))
 238                         expr->type = extract_type(ctx, document, value);
 239
 240                 if (!strcmp((char *) key->data.scalar.value, "value"))
 241                         expr->d = extract_double(ctx, document, value);
 242
 243                 if (!strcmp((char *) key->data.scalar.value, "relation"))
 244                         expr->acc.access = extract_map(ctx, document, value);
 245                 if (!strcmp((char *) key->data.scalar.value, "read"))
 246                         expr->acc.read = extract_int(ctx, document, value);
 247                 if (!strcmp((char *) key->data.scalar.value, "write"))
 248                         expr->acc.write = extract_int(ctx, document, value);
 249
 250                 if (!strcmp((char *) key->data.scalar.value, "operation"))
 251                         expr->op = extract_op(ctx, document, value);
 252
 253                 if (!strcmp((char *) key->data.scalar.value, "name"))
 254                         expr->name = extract_string(ctx, document, value);
 255
 256                 if (!strcmp((char *) key->data.scalar.value, "arguments"))
 257                         expr = extract_arguments(ctx, document, value, expr);
 258                 if (!expr)
 259                         return NULL;
 260         }
 261
 262         return expr;
 263 }
 264
 265 static struct pet_stmt *extract_stmt_arguments(isl_ctx *ctx,
 266         yaml_document_t *document, yaml_node_t *node, struct pet_stmt *stmt)
 267 {
 268         int i;
 269         yaml_node_item_t *item;
 270
 271         if (node->type != YAML_SEQUENCE_NODE)
 272                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 273                         return pet_stmt_free(stmt));
 274
 275         stmt->n_arg = node->data.sequence.items.top
 276                                 - node->data.sequence.items.start;
 277         stmt->args = isl_calloc_array(ctx, struct pet_expr *, stmt->n_arg);
 278         if (!stmt->args)
 279                 return pet_stmt_free(stmt);
 280
 281         for (item = node->data.sequence.items.start, i = 0;
 282              item < node->data.sequence.items.top; ++item, ++i) {
 283                 yaml_node_t *n;
 284
 285                 n = yaml_document_get_node(document, *item);
 286                 stmt->args[i] = extract_expr(ctx, document, n);
 287                 if (!stmt->args[i])
 288                         return pet_stmt_free(stmt);
 289         }
 290
 291         return stmt;
 292 }
 293
 294 static struct pet_stmt *extract_stmt(isl_ctx *ctx, yaml_document_t *document,
 295         yaml_node_t *node)
 296 {
 297         struct pet_stmt *stmt;
 298         yaml_node_pair_t * pair;
 299
 300         if (node->type != YAML_MAPPING_NODE)
 301                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 302                         return NULL);
 303
 304         stmt = isl_calloc_type(ctx, struct pet_stmt);
 305         if (!stmt)
 306                 return NULL;
 307
 308         for (pair = node->data.mapping.pairs.start;
 309              pair < node->data.mapping.pairs.top; ++pair) {
 310                 yaml_node_t *key, *value;
 311
 312                 key = yaml_document_get_node(document, pair->key);
 313                 value = yaml_document_get_node(document, pair->value);
 314
 315                 if (key->type != YAML_SCALAR_NODE)
 316                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 317                                 return pet_stmt_free(stmt));
 318
 319                 if (!strcmp((char *) key->data.scalar.value, "line"))
 320                         stmt->line = extract_int(ctx, document, value);
 321                 if (!strcmp((char *) key->data.scalar.value, "domain"))
 322                         stmt->domain = extract_set(ctx, document, value);
 323                 if (!strcmp((char *) key->data.scalar.value, "schedule"))
 324                         stmt->schedule = extract_map(ctx, document, value);
 325                 if (!strcmp((char *) key->data.scalar.value, "body"))
 326                         stmt->body = extract_expr(ctx, document, value);
 327
 328                 if (!strcmp((char *) key->data.scalar.value, "arguments"))
 329                         stmt = extract_stmt_arguments(ctx, document,
 330                                                         value, stmt);
 331                 if (!stmt)
 332                         return NULL;
 333         }
 334
 335         return stmt;
 336 }
 337
 338 static struct pet_scop *extract_statements(isl_ctx *ctx,
 339         yaml_document_t *document, yaml_node_t *node, struct pet_scop *scop)
 340 {
 341         int i;
 342         yaml_node_item_t *item;
 343
 344         if (node->type != YAML_SEQUENCE_NODE)
 345                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 346                         return NULL);
 347
 348         scop->n_stmt = node->data.sequence.items.top
 349                                 - node->data.sequence.items.start;
 350         scop->stmts = isl_calloc_array(ctx, struct pet_stmt *, scop->n_stmt);
 351         if (!scop->stmts)
 352                 return pet_scop_free(scop);
 353
 354         for (item = node->data.sequence.items.start, i = 0;
 355              item < node->data.sequence.items.top; ++item, ++i) {
 356                 yaml_node_t *n;
 357
 358                 n = yaml_document_get_node(document, *item);
 359                 scop->stmts[i] = extract_stmt(ctx, document, n);
 360                 if (!scop->stmts[i])
 361                         return pet_scop_free(scop);
 362         }
 363
 364         return scop;
 365 }
 366
 367 static struct pet_scop *extract_scop(isl_ctx *ctx, yaml_document_t *document,
 368         yaml_node_t *node)
 369 {
 370         struct pet_scop *scop;
 371         yaml_node_pair_t * pair;
 372
 373         if (!node)
 374                 return NULL;
 375
 376         if (node->type != YAML_MAPPING_NODE)
 377                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 378                         return NULL);
 379
 380         scop = isl_calloc_type(ctx, struct pet_scop);
 381         if (!scop)
 382                 return NULL;
 383
 384         for (pair = node->data.mapping.pairs.start;
 385              pair < node->data.mapping.pairs.top; ++pair) {
 386                 yaml_node_t *key, *value;
 387
 388                 key = yaml_document_get_node(document, pair->key);
 389                 value = yaml_document_get_node(document, pair->value);
 390
 391                 if (key->type != YAML_SCALAR_NODE)
 392                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 393                                 return pet_scop_free(scop));
 394                 if (!strcmp((char *) key->data.scalar.value, "context"))
 395                         scop->context = extract_set(ctx, document, value);
 396                 if (!strcmp((char *) key->data.scalar.value, "context_value"))
 397                         scop->context_value = extract_set(ctx, document, value);
 398                 if (!strcmp((char *) key->data.scalar.value, "arrays"))
 399                         scop = extract_arrays(ctx, document, value, scop);
 400                 if (!strcmp((char *) key->data.scalar.value, "statements"))
 401                         scop = extract_statements(ctx, document, value, scop);
 402                 if (!scop)
 403                         return NULL;
 404         }
 405
 406         if (!scop->context_value) {
 407                 isl_space *space = isl_space_params_alloc(ctx, 0);
 408                 scop->context_value = isl_set_universe(space);
 409                 if (!scop->context_value)
 410                         return pet_scop_free(scop);
 411         }
 412
 413         return scop;
 414 }
 415
 416 /* Extract a pet_scop from the YAML description in "in".
 417  */
 418 struct pet_scop *pet_scop_parse(isl_ctx *ctx, FILE *in)
 419 {
 420         struct pet_scop *scop = NULL;
 421         yaml_parser_t parser;
 422         yaml_node_t *root;
 423         yaml_document_t document = { 0 };
 424
 425         yaml_parser_initialize(&parser);
 426
 427         yaml_parser_set_input_file(&parser, in);
 428
 429         if (!yaml_parser_load(&parser, &document))
 430                 goto error;
 431
 432         root = yaml_document_get_root_node(&document);
 433
 434         scop = extract_scop(ctx, &document, root);
 435
 436         yaml_document_delete(&document);
 437
 438         yaml_parser_delete(&parser);
 439
 440         return scop;
 441 error:
 442         yaml_parser_delete(&parser);
 443         pet_scop_free(scop);
 444         return NULL;
 445 }