| | 18 | public class PragmaScope { |
| | 19 | /** The name. */ |
| | 20 | String name; |
| | 21 | |
| | 22 | /** The fully qualified name. */ |
| | 23 | String qName; |
| | 24 | |
| | 25 | /** The parent scope. */ |
| | 26 | PragmaScope parent; |
| | 27 | |
| | 28 | /** The nested scopes, if any. */ |
| | 29 | Map<String, PragmaScope> pscopes; |
| | 30 | |
| | 31 | /** The map from symbols to values, if any. */ |
| | 32 | Map<String, Object> symbols; |
| | 33 | |
| | 34 | public PragmaScope(String pragmaScope) { |
| | 35 | this.name = name; |
| | 36 | this.qName = name; |
| | 37 | } |
| | 38 | /** |
| | 39 | * Create a new nested PragmaScope with the specified unqualified name |
| | 40 | * and parent. |
| | 41 | * |
| | 42 | * @param name The unqualified name. |
| | 43 | * @param parent The parent. |
| | 44 | * @throws IllegalArgumentException |
| | 45 | * Signals that the specified parent already has a nested scope |
| | 46 | * with the specified name. |
| | 47 | */ |
| | 48 | PragmaScope(String name, PragmaScope parent) { |
| | 49 | if ((null != parent.pscopes) && parent.pscopes.containsKey(name)) { |
| | 50 | throw new IllegalArgumentException("Scope " + parent.qName + |
| | 51 | " already contains scope " + name); |
| | 52 | } |
| | 53 | this.name = name; |
| | 54 | this.qName = Utilities.qualify(parent.qName, name); |
| | 55 | this.parent = parent; |
| | 56 | if (null == parent.pscopes) { |
| | 57 | parent.pscopes = new HashMap<String, PragmaScope>(); |
| | 58 | } |
| | 59 | parent.pscopes.put(name, this); |
| | 60 | } |
| | 61 | |
| | 62 | /** |
| | 63 | * Get this scope's unqualfied name. |
| | 64 | * |
| | 65 | * @return This scope's unqualified name. |
| | 66 | */ |
| | 67 | public String getName() { |
| | 68 | return name; |
| | 69 | } |
| | 70 | |
| | 71 | /** |
| | 72 | * Get this scope's qualified name. |
| | 73 | * |
| | 74 | * @return This scope's qualified name. |
| | 75 | */ |
| | 76 | public String getQualifiedName() { |
| | 77 | return qName; |
| | 78 | } |
| | 79 | |
| | 80 | /** |
| | 81 | * Update this scope's qualified name relative to the parent |
| | 82 | * scope's qualified name. This method also requalifies any |
| | 83 | * nested scopes' qualified names. It must not be called on the |
| | 84 | * root scope. |
| | 85 | */ |
| | 86 | void requalify() { |
| | 87 | qName = Utilities.qualify(parent.qName, name); |
| | 88 | |
| | 89 | if (null != pscopes) { |
| | 90 | for (PragmaScope scope : pscopes.values()) { |
| | 91 | scope.requalify(); |
| | 92 | } |
| | 93 | } |
| | 94 | } |
| | 95 | |
| | 96 | /** |
| | 97 | * Determine whether this scope is the root scope. |
| | 98 | * |
| | 99 | * @return <code>true</code> if this scope is the root scope. |
| | 100 | */ |
| | 101 | public boolean isRoot() { |
| | 102 | return (null == parent); |
| | 103 | } |
| | 104 | |
| | 105 | /** |
| | 106 | * Get this scope's parent. |
| | 107 | * |
| | 108 | * @return This scope's parent scope or <code>null</code> if this |
| | 109 | * scope does not have a parent (i.e., is the root scope). |
| | 110 | */ |
| | 111 | public PragmaScope getParent() { |
| | 112 | return parent; |
| | 113 | } |
| | 114 | |
| | 115 | /** |
| | 116 | * Determine whether this scope has any nested scopes. |
| | 117 | * |
| | 118 | * @return <code>true</code> if this scope has any nested scopes. |
| | 119 | */ |
| | 120 | public boolean hasNested() { |
| | 121 | return ((null != pscopes) && (0 < pscopes.size())); |
| | 122 | } |
| | 123 | |
| | 124 | /** |
| | 125 | * Get an iterator over the names of all nested scopes. |
| | 126 | * |
| | 127 | * @return An iterator over the nested scopes. |
| | 128 | */ |
| | 129 | public Iterator<String> nested() { |
| | 130 | if (null == pscopes) { |
| | 131 | return EmptyIterator.value(); |
| | 132 | } else { |
| | 133 | return pscopes.keySet().iterator(); |
| | 134 | } |
| | 135 | } |
| | 136 | |
| | 137 | /** |
| | 138 | * Determine whether this scope has the specified unqualified |
| | 139 | * nested scope. |
| | 140 | * |
| | 141 | * @param name The nested scope's unqualified name. |
| | 142 | * @return <code>true</code> if the corresponding scope exists. |
| | 143 | */ |
| | 144 | public boolean hasNested(String name) { |
| | 145 | return (null != getNested(name)); |
| | 146 | } |
| | 147 | |
| | 148 | /** |
| | 149 | * Get the nested scope with the specified unqualified name. |
| | 150 | * |
| | 151 | * @param name The nested scope's unqualified name. |
| | 152 | * @return The corresponding scope or <code>null</code> if there is |
| | 153 | * no such scope. |
| | 154 | */ |
| | 155 | public PragmaScope getNested(String name) { |
| | 156 | return (null == pscopes)? null : pscopes.get(name); |
| | 157 | } |
| | 158 | |
| | 159 | /** |
| | 160 | * Determine whether the scope with the specified unqualified name |
| | 161 | * can be merged into this scope. A nested scope can be merged if |
| | 162 | * it (1) does not contain any bindings with the same names as |
| | 163 | * this scope's bindings and (2) does not have any children with |
| | 164 | * the same names as this scope's children. |
| | 165 | * |
| | 166 | * @param name The nested scope's unqualified name. |
| | 167 | * @return <code>true</code> if the scope can be merged. |
| | 168 | * @throws IllegalArgumentException Signals that this scope does |
| | 169 | * not have a nested scope with the specified name. |
| | 170 | */ |
| | 171 | public boolean isMergeable(String name) { |
| | 172 | PragmaScope nested = getNested(name); |
| | 173 | |
| | 174 | if (null == nested) { |
| | 175 | throw new IllegalArgumentException("Scope " + qName + " does not " + |
| | 176 | " contain scope " + name); |
| | 177 | } |
| | 178 | |
| | 179 | if (null != nested.pscopes) { |
| | 180 | // Note that this scope must have nested scopes, since we just |
| | 181 | // looked one up. |
| | 182 | for (String s : nested.pscopes.keySet()) { |
| | 183 | if ((! s.equals(name)) && this.pscopes.containsKey(s)) { |
| | 184 | return false; |
| | 185 | } |
| | 186 | } |
| | 187 | } |
| | 188 | |
| | 189 | if ((null != this.symbols) && (null != nested.symbols)) { |
| | 190 | for (String s : nested.symbols.keySet()) { |
| | 191 | if (this.symbols.containsKey(s)) { |
| | 192 | return false; |
| | 193 | } |
| | 194 | } |
| | 195 | } |
| | 196 | |
| | 197 | return true; |
| | 198 | } |
| | 199 | |
| | 200 | /** |
| | 201 | * Merge the nested scope with the specified unqualified name into |
| | 202 | * this scope. |
| | 203 | * |
| | 204 | * @param name The nested scope's unqualified name. |
| | 205 | * @throws IllegalArgumentException Signals that (1) this scope |
| | 206 | * does not have a nested scope with the specified name, (2) any |
| | 207 | * of the nested scope's children has the same name as one of |
| | 208 | * this scope's children, or (3) any of the nested scope's |
| | 209 | * bindings has the same name as one of this scope's bindings. |
| | 210 | */ |
| | 211 | public void merge(String name) { |
| | 212 | final PragmaScope nested = getNested(name); |
| | 213 | |
| | 214 | // Make sure the nested scope is mergeable. Note that the |
| | 215 | // nested scope must exist in the consequence of the |
| | 216 | // if-statement, since isMergeable signals an exception for |
| | 217 | // non-existent scopes. |
| | 218 | if (! isMergeable(name)) { |
| | 219 | throw new IllegalArgumentException("Scope " + nested.qName + |
| | 220 | " cannot be merged into the parent"); |
| | 221 | } |
| | 222 | |
| | 223 | // Remove the nested scope. |
| | 224 | this.pscopes.remove(name); |
| | 225 | |
| | 226 | // Add the nested scope's children. |
| | 227 | if (null != nested.pscopes) { |
| | 228 | this.pscopes.putAll(nested.pscopes); |
| | 229 | |
| | 230 | for (PragmaScope s : nested.pscopes.values()) { |
| | 231 | s.parent = this; |
| | 232 | s.requalify(); |
| | 233 | } |
| | 234 | } |
| | 235 | |
| | 236 | // Add the nested scope's bindings. |
| | 237 | if (null != nested.symbols) { |
| | 238 | if (null == this.symbols) { |
| | 239 | this.symbols = nested.symbols; |
| | 240 | } else { |
| | 241 | this.symbols.putAll(nested.symbols); |
| | 242 | } |
| | 243 | } |
| | 244 | |
| | 245 | // Invalidate the nested scope. |
| | 246 | nested.parent = null; |
| | 247 | nested.name = null; |
| | 248 | nested.qName = null; |
| | 249 | nested.pscopes = null; |
| | 250 | nested.symbols = null; |
| | 251 | } |
| | 252 | |
| | 253 | /** |
| | 254 | * Determine whether this scope has any local definitions. |
| | 255 | * |
| | 256 | * @return <code>true</code> if this scope has any local |
| | 257 | * definitions. |
| | 258 | */ |
| | 259 | public boolean hasSymbols() { |
| | 260 | return ((null != symbols) && (0 < symbols.size())); |
| | 261 | } |
| | 262 | |
| | 263 | /** |
| | 264 | * Get an iterator over the all locally defined symbols. |
| | 265 | * |
| | 266 | * @return An iterator over the locally defined symbols. |
| | 267 | */ |
| | 268 | public Iterator<String> symbols() { |
| | 269 | if (null == symbols) { |
| | 270 | return EmptyIterator.value(); |
| | 271 | } else { |
| | 272 | return symbols.keySet().iterator(); |
| | 273 | } |
| | 274 | } |
| | 275 | |
| | 276 | /** |
| | 277 | * Determine whether the specified symbol is defined in this |
| | 278 | * scope. |
| | 279 | * |
| | 280 | * @param symbol The unqualified symbol. |
| | 281 | * @return <code>true</code> if the symbol is defined in this |
| | 282 | * scope. |
| | 283 | */ |
| | 284 | public boolean isDefinedLocally(String symbol) { |
| | 285 | return (null == symbols)? false : symbols.containsKey(symbol); |
| | 286 | } |
| | 287 | |
| | 288 | /** |
| | 289 | * Determine whether the specified unqualified symbol is defined |
| | 290 | * in this scope or any of its ancestors. |
| | 291 | * |
| | 292 | * @param symbol The unqualified symbol. |
| | 293 | * @return <code>true</code> if the symbol is defined in this scope |
| | 294 | * or any of its ancestors. |
| | 295 | */ |
| | 296 | public boolean isDefined(String symbol) { |
| | 297 | return (null != lookupScope(symbol)); |
| | 298 | } |
| | 299 | |
| | 300 | /** |
| | 301 | * Determine whether the specified symbol is defined multiple |
| | 302 | * times in this scope or any of its ancestors. |
| | 303 | * |
| | 304 | * @param symbol The unqualified symbol. |
| | 305 | * @return <code>true</code> if the symbol is defined multiple |
| | 306 | * times. |
| | 307 | */ |
| | 308 | public boolean isDefinedMultiply(String symbol) { |
| | 309 | PragmaScope scope = lookupScope(symbol); |
| | 310 | return (null == scope)? false : scope.symbols.get(symbol) instanceof List; |
| | 311 | } |
| | 312 | |
| | 313 | /** |
| | 314 | * Get the scope defining the specified unqualified symbol. This |
| | 315 | * method searches this scope and all its ancestors, returning the |
| | 316 | * first defining scope. |
| | 317 | * |
| | 318 | * @param symbol The unqualified symbol. |
| | 319 | * @return The definining scope or <code>null</code> if there is |
| | 320 | * no such scope. |
| | 321 | */ |
| | 322 | public PragmaScope lookupScope(String symbol) { |
| | 323 | PragmaScope scope = this; |
| | 324 | do { |
| | 325 | if ((null != scope.symbols) && (scope.symbols.containsKey(symbol))) { |
| | 326 | return scope; |
| | 327 | } |
| | 328 | scope = scope.parent; |
| | 329 | } while (null != scope); |
| | 330 | return null; |
| | 331 | } |
| | 332 | |
| | 333 | /** |
| | 334 | * Get the value for the specified unqualified symbol. This |
| | 335 | * method searches this scope and all its ancestors, returning the |
| | 336 | * value of the first definition. |
| | 337 | * |
| | 338 | * @param symbol The unqualified symbol. |
| | 339 | * @return The corresponding value or <code>null</code> if there is |
| | 340 | * no definition. |
| | 341 | */ |
| | 342 | public Object lookup(String symbol) { |
| | 343 | PragmaScope scope = lookupScope(symbol); |
| | 344 | return (null == scope)? null : scope.symbols.get(symbol); |
| | 345 | } |
| | 346 | |
| | 347 | /** |
| | 348 | * Get the scope named by the specified unqualified symbol, which |
| | 349 | * is nested in the scope defining the symbol. This method |
| | 350 | * searches this scope and all its ancestors, up to the first |
| | 351 | * defining scope. It then looks for the nested scope with the |
| | 352 | * same name. |
| | 353 | * |
| | 354 | * @param symbol The unqualified symbol. |
| | 355 | * @return The bound scope or <code>null</code> if there is no |
| | 356 | * definition or nested scope with the same name. |
| | 357 | */ |
| | 358 | public PragmaScope lookupBoundScope(String symbol) { |
| | 359 | PragmaScope scope = lookupScope(symbol); |
| | 360 | return (null == scope)? null : scope.getNested(symbol); |
| | 361 | } |
| | 362 | |
| | 363 | /** |
| | 364 | * Get the local value for the specified unqualified symbol. |
| | 365 | * |
| | 366 | * @param symbol The unqualified symbol. |
| | 367 | * @return The corresponding value or <code>null</code> if there is |
| | 368 | * no local definition. |
| | 369 | */ |
| | 370 | public Object lookupLocally(String symbol) { |
| | 371 | return (null == symbols)? null : symbols.get(symbol); |
| | 372 | } |
| | 373 | |
| | 374 | /** |
| | 375 | * Set the specified symbol's value to the specified value in this |
| | 376 | * scope. |
| | 377 | * |
| | 378 | * @param symbol The unqualified symbol. |
| | 379 | * @param value The value. |
| | 380 | */ |
| | 381 | public void define(String symbol, Object value) { |
| | 382 | if (null == symbols) { |
| | 383 | symbols = new HashMap<String, Object>(); |
| | 384 | } |
| | 385 | symbols.put(symbol, value); |
| | 386 | } |
| | 387 | |
| | 388 | /** |
| | 389 | * Add the specified value to the specified symbol's values in |
| | 390 | * this scope. |
| | 391 | * |
| | 392 | * @param symbol The unqualified symbol. |
| | 393 | * @param value The value. |
| | 394 | */ |
| | 395 | @SuppressWarnings("unchecked") |
| | 396 | public void addDefinition(String symbol, Object value) { |
| | 397 | if (null == symbols) { |
| | 398 | symbols = new HashMap<String, Object>(); |
| | 399 | } |
| | 400 | |
| | 401 | if (symbols.containsKey(symbol)) { |
| | 402 | Object o = symbols.get(symbol); |
| | 403 | |
| | 404 | if (o instanceof List) { |
| | 405 | ((List<Object>)o).add(value); |
| | 406 | |
| | 407 | } else { |
| | 408 | List<Object> l = new ArrayList<Object>(); |
| | 409 | l.add(o); |
| | 410 | l.add(value); |
| | 411 | symbols.put(symbol, l); |
| | 412 | } |
| | 413 | |
| | 414 | } else { |
| | 415 | symbols.put(symbol, value); |
| | 416 | } |
| | 417 | } |
| | 418 | |
| | 419 | /** |
| | 420 | * Undefine the specified unqualified symbol. If the symbol is |
| | 421 | * defined in this scope, this method removes all its values. |
| | 422 | * |
| | 423 | * @param symbol The unqualified symbol. |
| | 424 | */ |
| | 425 | public void undefine(String symbol) { |
| | 426 | if (null != symbols) { |
| | 427 | symbols.remove(symbol); |
| | 428 | } |
| | 429 | } |
| | 430 | |
| | 431 | /** |
| | 432 | * Qualify the specified unqualified symbol with this scope's |
| | 433 | * name. |
| | 434 | * |
| | 435 | * @param symbol The unqualified symbol. |
| | 436 | * @return The qualified symbol. |
| | 437 | */ |
| | 438 | public String qualify(String symbol) { |
| | 439 | return Utilities.qualify(qName, symbol); |
| | 440 | } |
| | 441 | |
| | 442 | /** |
| | 443 | * Dump the contents of this scope. This method pretty prints the |
| | 444 | * contents of this scope and all nested scopes with the specified |
| | 445 | * printer. If the printer is registered with a visitor, that |
| | 446 | * visitor is used for formatting any node values. |
| | 447 | * |
| | 448 | * @param printer The printer, which need not be registered with a |
| | 449 | * visitor. |
| | 450 | */ |
| | 451 | public void dump(Printer printer) { |
| | 452 | boolean hasVisitor = (null != printer.visitor()); |
| | 453 | |
| | 454 | printer.indent().p('.').p(name).pln(" = {").incr(); |
| | 455 | |
| | 456 | if (null != symbols) { |
| | 457 | for (Map.Entry<String,Object> entry : symbols.entrySet()) { |
| | 458 | String symbol = entry.getKey(); |
| | 459 | Object value = entry.getValue(); |
| | 460 | |
| | 461 | printer.indent().p(symbol).p(" = "); |
| | 462 | if (null == value) { |
| | 463 | printer.p("null"); |
| | 464 | } else if (hasVisitor && (value instanceof Node)) { |
| | 465 | printer.p((Node)value); |
| | 466 | } else if (value instanceof String) { |
| | 467 | printer.p('"').escape((String)value, Utilities.JAVA_ESCAPES).p('"'); |
| | 468 | } else { |
| | 469 | try { |
| | 470 | printer.p(value.toString()); |
| | 471 | } catch (final Exception e) { |
| | 472 | printer.p(value.getClass().getName() + "@?"); |
| | 473 | } |
| | 474 | } |
| | 475 | printer.pln(';'); |
| | 476 | |
| | 477 | PragmaScope nested = getNested(symbol); |
| | 478 | if (null != nested) { |
| | 479 | nested.dump(printer); |
| | 480 | } |
| | 481 | } |
| | 482 | } |
| | 483 | |
| | 484 | if (null != pscopes) { |
| | 485 | for (PragmaScope nested : pscopes.values()) { |
| | 486 | if ((null == symbols) || (! symbols.containsKey(nested.name))) { |
| | 487 | nested.dump(printer); |
| | 488 | } |
| | 489 | } |
| | 490 | } |
| | 491 | |
| | 492 | printer.decr().indent().pln("};"); |
| | 493 | } |
| | 494 | |
| | 495 | } |
| | 496 | |
| | 497 | // ========================================================================= |
| | 498 | //Added for pragmaScope gestion |
| | 499 | /** The root scope. */ |
| | 500 | protected PragmaScope proot; |
| | 501 | |
| | 502 | /** The current scope. */ |
| | 503 | protected Scope pcurrent; |
| | 504 | |
| | 505 | /** The fresh name count. */ |
| | 506 | protected int pfreshNameCount; |
| | 507 | |
| | 508 | /** The fresh identifier count. */ |
| | 509 | protected int pfreshIdCount; |
| | 510 | |
| | 511 | // ========================================================================= |
