parse.c

   1 #include <stdlib.h>
   2 #include <yaml.h>
   3
   4 #include "scop.h"
   5 #include "scop_yaml.h"
   6
   7 static char *extract_string(isl_ctx *ctx, yaml_document_t *document,
   8         yaml_node_t *node)
   9 {
  10         if (node->type != YAML_SCALAR_NODE)
  11                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  12                         return NULL);
  13
  14         return strdup((char *) node->data.scalar.value);
  15 }
  16
  17 static int extract_int(isl_ctx *ctx, yaml_document_t *document,
  18         yaml_node_t *node)
  19 {
  20         if (node->type != YAML_SCALAR_NODE)
  21                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  22                         return -1);
  23
  24         return atoi((char *) node->data.scalar.value);
  25 }
  26
  27 static int extract_double(isl_ctx *ctx, yaml_document_t *document,
  28         yaml_node_t *node)
  29 {
  30         if (node->type != YAML_SCALAR_NODE)
  31                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  32                         return -1);
  33
  34         return strtod((char *) node->data.scalar.value, NULL);
  35 }
  36
  37 static enum pet_expr_type extract_type(isl_ctx *ctx, yaml_document_t *document,
  38         yaml_node_t *node)
  39 {
  40         if (node->type != YAML_SCALAR_NODE)
  41                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  42                         return -1);
  43
  44         return pet_str_type((char *) node->data.scalar.value);
  45 }
  46
  47 static enum pet_op_type extract_op(isl_ctx *ctx, yaml_document_t *document,
  48         yaml_node_t *node)
  49 {
  50         if (node->type != YAML_SCALAR_NODE)
  51                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  52                         return -1);
  53
  54         return pet_str_op((char *) node->data.scalar.value);
  55 }
  56
  57 static __isl_give isl_set *extract_set(isl_ctx *ctx, yaml_document_t *document,
  58         yaml_node_t *node)
  59 {
  60         if (node->type != YAML_SCALAR_NODE)
  61                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  62                         return NULL);
  63
  64         return isl_set_read_from_str(ctx, (char *) node->data.scalar.value, -1);
  65 }
  66
  67 static __isl_give isl_map *extract_map(isl_ctx *ctx, yaml_document_t *document,
  68         yaml_node_t *node)
  69 {
  70         if (node->type != YAML_SCALAR_NODE)
  71                 isl_die(ctx, isl_error_invalid, "expecting scalar node",
  72                         return NULL);
  73
  74         return isl_map_read_from_str(ctx, (char *) node->data.scalar.value, -1);
  75 }
  76
  77 static struct pet_array *extract_array(isl_ctx *ctx, yaml_document_t *document,
  78         yaml_node_t *node)
  79 {
  80         struct pet_array *array;
  81         yaml_node_pair_t * pair;
  82
  83         if (node->type != YAML_MAPPING_NODE)
  84                 isl_die(ctx, isl_error_invalid, "expecting mapping",
  85                         return NULL);
  86
  87         array = isl_calloc_type(ctx, struct pet_array);
  88         if (!array)
  89                 return NULL;
  90
  91         for (pair = node->data.mapping.pairs.start;
  92              pair < node->data.mapping.pairs.top; ++pair) {
  93                 yaml_node_t *key, *value;
  94
  95                 key = yaml_document_get_node(document, pair->key);
  96                 value = yaml_document_get_node(document, pair->value);
  97
  98                 if (key->type != YAML_SCALAR_NODE)
  99                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 100                                 return pet_array_free(array));
 101
 102                 if (!strcmp((char *) key->data.scalar.value, "context"))
 103                         array->context = extract_set(ctx, document, value);
 104                 if (!strcmp((char *) key->data.scalar.value, "extent"))
 105                         array->extent = extract_set(ctx, document, value);
 106                 if (!strcmp((char *) key->data.scalar.value, "value_bounds"))
 107                         array->value_bounds = extract_set(ctx, document, value);
 108                 if (!strcmp((char *) key->data.scalar.value, "element_type"))
 109                         array->element_type =
 110                                         extract_string(ctx, document, value);
 111         }
 112
 113         return array;
 114 }
 115
 116 static struct pet_scop *extract_arrays(isl_ctx *ctx, yaml_document_t *document,
 117         yaml_node_t *node, struct pet_scop *scop)
 118 {
 119         int i;
 120         yaml_node_item_t *item;
 121
 122         if (node->type != YAML_SEQUENCE_NODE)
 123                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 124                         return NULL);
 125
 126         scop->n_array = node->data.sequence.items.top
 127                                 - node->data.sequence.items.start;
 128         scop->arrays = isl_calloc_array(ctx, struct pet_array *, scop->n_array);
 129         if (!scop->arrays)
 130                 return pet_scop_free(scop);
 131
 132         for (item = node->data.sequence.items.start, i = 0;
 133              item < node->data.sequence.items.top; ++item, ++i) {
 134                 yaml_node_t *n;
 135
 136                 n = yaml_document_get_node(document, *item);
 137                 scop->arrays[i] = extract_array(ctx, document, n);
 138                 if (!scop->arrays[i])
 139                         return pet_scop_free(scop);
 140         }
 141
 142         return scop;
 143 }
 144
 145 static struct pet_expr *extract_expr(isl_ctx *ctx, yaml_document_t *document,
 146         yaml_node_t *node);
 147
 148 static struct pet_expr *extract_arguments(isl_ctx *ctx,
 149         yaml_document_t *document, yaml_node_t *node, struct pet_expr *expr)
 150 {
 151         int i;
 152         yaml_node_item_t *item;
 153
 154         if (node->type != YAML_SEQUENCE_NODE)
 155                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 156                         return NULL);
 157
 158         expr->n_arg = node->data.sequence.items.top
 159                                 - node->data.sequence.items.start;
 160         expr->args = isl_calloc_array(ctx, struct pet_expr *, expr->n_arg);
 161         if (!expr->args)
 162                 return pet_expr_free(expr);
 163
 164         for (item = node->data.sequence.items.start, i = 0;
 165              item < node->data.sequence.items.top; ++item, ++i) {
 166                 yaml_node_t *n;
 167
 168                 n = yaml_document_get_node(document, *item);
 169                 expr->args[i] = extract_expr(ctx, document, n);
 170                 if (!expr->args[i])
 171                         return pet_expr_free(expr);
 172         }
 173
 174         return expr;
 175 }
 176
 177 static struct pet_expr *extract_expr(isl_ctx *ctx, yaml_document_t *document,
 178         yaml_node_t *node)
 179 {
 180         struct pet_expr *expr;
 181         yaml_node_pair_t * pair;
 182
 183         if (node->type != YAML_MAPPING_NODE)
 184                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 185                         return NULL);
 186
 187         expr = isl_calloc_type(ctx, struct pet_expr);
 188         if (!expr)
 189                 return NULL;
 190
 191         for (pair = node->data.mapping.pairs.start;
 192              pair < node->data.mapping.pairs.top; ++pair) {
 193                 yaml_node_t *key, *value;
 194
 195                 key = yaml_document_get_node(document, pair->key);
 196                 value = yaml_document_get_node(document, pair->value);
 197
 198                 if (key->type != YAML_SCALAR_NODE)
 199                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 200                                 return pet_expr_free(expr));
 201
 202                 if (!strcmp((char *) key->data.scalar.value, "type"))
 203                         expr->type = extract_type(ctx, document, value);
 204
 205                 if (!strcmp((char *) key->data.scalar.value, "value"))
 206                         expr->d = extract_double(ctx, document, value);
 207
 208                 if (!strcmp((char *) key->data.scalar.value, "relation"))
 209                         expr->acc.access = extract_map(ctx, document, value);
 210                 if (!strcmp((char *) key->data.scalar.value, "read"))
 211                         expr->acc.read = extract_int(ctx, document, value);
 212                 if (!strcmp((char *) key->data.scalar.value, "write"))
 213                         expr->acc.write = extract_int(ctx, document, value);
 214
 215                 if (!strcmp((char *) key->data.scalar.value, "operation"))
 216                         expr->op = extract_op(ctx, document, value);
 217
 218                 if (!strcmp((char *) key->data.scalar.value, "name"))
 219                         expr->name = extract_string(ctx, document, value);
 220
 221                 if (!strcmp((char *) key->data.scalar.value, "arguments"))
 222                         expr = extract_arguments(ctx, document, value, expr);
 223                 if (!expr)
 224                         return NULL;
 225         }
 226
 227         return expr;
 228 }
 229
 230 static struct pet_stmt *extract_stmt(isl_ctx *ctx, yaml_document_t *document,
 231         yaml_node_t *node)
 232 {
 233         struct pet_stmt *stmt;
 234         yaml_node_pair_t * pair;
 235
 236         if (node->type != YAML_MAPPING_NODE)
 237                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 238                         return NULL);
 239
 240         stmt = isl_calloc_type(ctx, struct pet_stmt);
 241         if (!stmt)
 242                 return NULL;
 243
 244         for (pair = node->data.mapping.pairs.start;
 245              pair < node->data.mapping.pairs.top; ++pair) {
 246                 yaml_node_t *key, *value;
 247
 248                 key = yaml_document_get_node(document, pair->key);
 249                 value = yaml_document_get_node(document, pair->value);
 250
 251                 if (key->type != YAML_SCALAR_NODE)
 252                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 253                                 return pet_stmt_free(stmt));
 254
 255                 if (!strcmp((char *) key->data.scalar.value, "line"))
 256                         stmt->line = extract_int(ctx, document, value);
 257                 if (!strcmp((char *) key->data.scalar.value, "domain"))
 258                         stmt->domain = extract_set(ctx, document, value);
 259                 if (!strcmp((char *) key->data.scalar.value, "schedule"))
 260                         stmt->schedule = extract_map(ctx, document, value);
 261                 if (!strcmp((char *) key->data.scalar.value, "body"))
 262                         stmt->body = extract_expr(ctx, document, value);
 263         }
 264
 265         return stmt;
 266 }
 267
 268 static struct pet_scop *extract_statements(isl_ctx *ctx,
 269         yaml_document_t *document, yaml_node_t *node, struct pet_scop *scop)
 270 {
 271         int i;
 272         yaml_node_item_t *item;
 273
 274         if (node->type != YAML_SEQUENCE_NODE)
 275                 isl_die(ctx, isl_error_invalid, "expecting sequence",
 276                         return NULL);
 277
 278         scop->n_stmt = node->data.sequence.items.top
 279                                 - node->data.sequence.items.start;
 280         scop->stmts = isl_calloc_array(ctx, struct pet_stmt *, scop->n_stmt);
 281         if (!scop->stmts)
 282                 return pet_scop_free(scop);
 283
 284         for (item = node->data.sequence.items.start, i = 0;
 285              item < node->data.sequence.items.top; ++item, ++i) {
 286                 yaml_node_t *n;
 287
 288                 n = yaml_document_get_node(document, *item);
 289                 scop->stmts[i] = extract_stmt(ctx, document, n);
 290                 if (!scop->stmts[i])
 291                         return pet_scop_free(scop);
 292         }
 293
 294         return scop;
 295 }
 296
 297 static struct pet_scop *extract_scop(isl_ctx *ctx, yaml_document_t *document,
 298         yaml_node_t *node)
 299 {
 300         struct pet_scop *scop;
 301         yaml_node_pair_t * pair;
 302
 303         if (!node)
 304                 return NULL;
 305
 306         if (node->type != YAML_MAPPING_NODE)
 307                 isl_die(ctx, isl_error_invalid, "expecting mapping",
 308                         return NULL);
 309
 310         scop = isl_calloc_type(ctx, struct pet_scop);
 311         if (!scop)
 312                 return NULL;
 313
 314         for (pair = node->data.mapping.pairs.start;
 315              pair < node->data.mapping.pairs.top; ++pair) {
 316                 yaml_node_t *key, *value;
 317
 318                 key = yaml_document_get_node(document, pair->key);
 319                 value = yaml_document_get_node(document, pair->value);
 320
 321                 if (key->type != YAML_SCALAR_NODE)
 322                         isl_die(ctx, isl_error_invalid, "expecting scalar key",
 323                                 return pet_scop_free(scop));
 324                 if (!strcmp((char *) key->data.scalar.value, "context"))
 325                         scop->context = extract_set(ctx, document, value);
 326                 if (!strcmp((char *) key->data.scalar.value, "arrays"))
 327                         scop = extract_arrays(ctx, document, value, scop);
 328                 if (!strcmp((char *) key->data.scalar.value, "statements"))
 329                         scop = extract_statements(ctx, document, value, scop);
 330                 if (!scop)
 331                         return NULL;
 332         }
 333
 334         return scop;
 335 }
 336
 337 /* Extract a pet_scop from the YAML description in "in".
 338  */
 339 struct pet_scop *pet_scop_parse(isl_ctx *ctx, FILE *in)
 340 {
 341         struct pet_scop *scop = NULL;
 342         yaml_parser_t parser;
 343         yaml_node_t *root;
 344         yaml_document_t document = { 0 };
 345
 346         yaml_parser_initialize(&parser);
 347
 348         yaml_parser_set_input_file(&parser, in);
 349
 350         if (!yaml_parser_load(&parser, &document))
 351                 goto error;
 352
 353         root = yaml_document_get_root_node(&document);
 354
 355         scop = extract_scop(ctx, &document, root);
 356
 357         yaml_document_delete(&document);
 358
 359         yaml_parser_delete(&parser);
 360
 361         return scop;
 362 error:
 363         yaml_parser_delete(&parser);
 364         pet_scop_free(scop);
 365         return NULL;
 366 }