| 1 | /* This file is part of the project "Hilbert II" - http://www.qedeq.org |
| 2 | * |
| 3 | * Copyright 2000-2014, Michael Meyling <mime@qedeq.org>. |
| 4 | * |
| 5 | * "Hilbert II" is free software; you can redistribute |
| 6 | * it and/or modify it under the terms of the GNU General Public |
| 7 | * License as published by the Free Software Foundation; either |
| 8 | * version 2 of the License, or (at your option) any later version. |
| 9 | * |
| 10 | * This program is distributed in the hope that it will be useful, |
| 11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 12 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | */ |
| 15 | |
| 16 | package org.qedeq.kernel.bo.service.internal; |
| 17 | |
| 18 | import java.util.HashMap; |
| 19 | import java.util.Map; |
| 20 | |
| 21 | import org.qedeq.base.utility.StringUtility; |
| 22 | import org.qedeq.kernel.bo.common.Element2Latex; |
| 23 | import org.qedeq.kernel.bo.logic.common.ExistenceChecker; |
| 24 | import org.qedeq.kernel.bo.module.KernelQedeqBo; |
| 25 | import org.qedeq.kernel.bo.module.ModuleLabels; |
| 26 | import org.qedeq.kernel.se.base.list.Element; |
| 27 | import org.qedeq.kernel.se.base.list.ElementList; |
| 28 | import org.qedeq.kernel.se.base.module.FunctionDefinition; |
| 29 | import org.qedeq.kernel.se.base.module.PredicateDefinition; |
| 30 | import org.qedeq.kernel.se.dto.module.FunctionDefinitionVo; |
| 31 | import org.qedeq.kernel.se.dto.module.PredicateDefinitionVo; |
| 32 | |
| 33 | |
| 34 | /** |
| 35 | * Transfer a QEDEQ formulas into LaTeX text. |
| 36 | * |
| 37 | * @author Michael Meyling |
| 38 | */ |
| 39 | public final class Element2LatexImpl implements Element2Latex { |
| 40 | |
| 41 | /** Knows about labels, definitions and external QEDEQ module references. */ |
| 42 | private ModuleLabels labels; |
| 43 | |
| 44 | /** Maps operator strings to {@link ElementList} to LaTeX mappers. */ |
| 45 | private final Map elementList2ListType = new HashMap(); |
| 46 | |
| 47 | /** For mapping an unknown operator. */ |
| 48 | private final ListType unknown = new Unknown(); |
| 49 | |
| 50 | /** Maps predicate identifiers to {@link PredicateDefinition}s. Contains default definitions |
| 51 | * as a fallback.*/ |
| 52 | private final Map backupPredicateDefinitions = new HashMap(); |
| 53 | |
| 54 | /** Maps function identifiers to {@link FunctionDefinition}s. Contains default definitions. */ |
| 55 | private final Map backupFunctionDefinitions = new HashMap(); |
| 56 | |
| 57 | /** |
| 58 | * Constructor. |
| 59 | * |
| 60 | * @param labels Knows about labels, definitions and external QEDEQ module references. |
| 61 | */ |
| 62 | public Element2LatexImpl(final ModuleLabels labels) { |
| 63 | this.labels = labels; |
| 64 | |
| 65 | this.elementList2ListType.put("PREDVAR", new Predvar()); |
| 66 | this.elementList2ListType.put("FUNVAR", new Funvar()); |
| 67 | this.elementList2ListType.put("PREDCON", new Predcon()); |
| 68 | this.elementList2ListType.put("FUNCON", new Funcon()); |
| 69 | this.elementList2ListType.put("VAR", new Var()); |
| 70 | |
| 71 | this.elementList2ListType.put("AND", new BinaryLogical("\\land")); |
| 72 | this.elementList2ListType.put("OR", new BinaryLogical("\\lor")); |
| 73 | this.elementList2ListType.put("IMPL", new BinaryLogical("\\rightarrow")); |
| 74 | this.elementList2ListType.put("EQUI", new BinaryLogical("\\leftrightarrow")); |
| 75 | |
| 76 | this.elementList2ListType.put("FORALL", new Quantifier("\\forall")); |
| 77 | this.elementList2ListType.put("EXISTS", new Quantifier("\\exists")); |
| 78 | this.elementList2ListType.put("EXISTSU", new Quantifier("\\exists!")); |
| 79 | |
| 80 | this.elementList2ListType.put("NOT", new Not()); |
| 81 | this.elementList2ListType.put("CLASS", new Class()); |
| 82 | this.elementList2ListType.put("CLASSLIST", new Classlist()); |
| 83 | |
| 84 | // // TODO mime 20080126: wrong spelled and not used any longer (?) |
| 85 | // this.elementList2ListType.put("QUANTOR_INTERSECTION", new QuantorIntersection()); |
| 86 | // this.elementList2ListType.put("QUANTOR_UNION", new QuantorUnion()); |
| 87 | |
| 88 | fillBackup(); |
| 89 | |
| 90 | } |
| 91 | |
| 92 | /** |
| 93 | * Fill backup predicate list (if required modules could not be loaded, or the predicate is |
| 94 | * not yet defined. |
| 95 | */ |
| 96 | private void fillBackup() { |
| 97 | // logical identity operator |
| 98 | addBackupPredicate(ExistenceChecker.NAME_EQUAL, "2", "#1 \\ = \\ #2"); |
| 99 | |
| 100 | // negation of the logical identity operator |
| 101 | addBackupPredicate("notEqual", "2", "#1 \\ \\neq \\ #2"); |
| 102 | |
| 103 | addBackupPredicate("in", "2", "#1 \\in #2"); |
| 104 | addBackupPredicate("notIn", "2", "#1 \\notin #2"); |
| 105 | addBackupPredicate("isSet", "1", "\\mathfrak{M}(#1)"); |
| 106 | addBackupPredicate("subclass", "2", "#1 \\ \\subseteq \\ #2"); |
| 107 | addBackupPredicate("isOrderedPair", "1", "\\mbox{isOrderedPair}(#1)"); |
| 108 | addBackupPredicate("isRelation", "1", "\\mathfrak{Rel}(#1)"); |
| 109 | addBackupPredicate("isFunction", "1", "\\mathfrak{Funct}(#1)"); |
| 110 | |
| 111 | addBackupFunction("RussellClass", "0", "\\mathfrak{Ru}"); |
| 112 | addBackupFunction("universalClass", "0", "\\mathfrak{V}"); |
| 113 | addBackupFunction("emptySet", "0", "\\emptyset"); |
| 114 | addBackupFunction("union", "2", "(#1 \\cup #2)"); |
| 115 | addBackupFunction("intersection", "2", "(#1 \\cap #2)"); |
| 116 | addBackupFunction("complement", "1", "\\overline{#1}"); |
| 117 | addBackupFunction("classList", "1", "\\{ #1 \\}"); |
| 118 | addBackupFunction("classList", "2", "\\{ #1, #2 \\}"); |
| 119 | addBackupFunction("setProduct", "1", "\\bigcap \\ #1"); |
| 120 | addBackupFunction("setSum", "1", "\\bigcup \\ #1"); |
| 121 | addBackupFunction("power", "1", "\\mathfrak{P}(#1)"); |
| 122 | addBackupFunction("orderedPair", "2", "\\langle #1, #2 \\rangle"); |
| 123 | addBackupFunction("cartesianProduct", "2", "( #1 \\times #2)"); |
| 124 | addBackupFunction("domain", "1", "\\mathfrak{Dom}(#1)"); |
| 125 | addBackupFunction("range", "1", "\\mathfrak{Rng}(#1)"); |
| 126 | addBackupFunction("successor", "1", "#1'"); |
| 127 | |
| 128 | } |
| 129 | |
| 130 | /** |
| 131 | * Add predicate to backup list. |
| 132 | * |
| 133 | * @param name Predicate name. |
| 134 | * @param argNumber Number of arguments. |
| 135 | * @param latexPattern This is the latex presentation. Variables are marked by "#1", "#2" |
| 136 | * and so on. |
| 137 | */ |
| 138 | private void addBackupPredicate(final String name, final String argNumber, |
| 139 | final String latexPattern) { |
| 140 | final String key = name + "_" + argNumber; |
| 141 | final PredicateDefinitionVo predicate = new PredicateDefinitionVo(); |
| 142 | predicate.setArgumentNumber(argNumber); |
| 143 | predicate.setName(name); |
| 144 | predicate.setLatexPattern(latexPattern); |
| 145 | backupPredicateDefinitions.put(key, predicate); |
| 146 | } |
| 147 | |
| 148 | /** |
| 149 | * Add function to backup list. |
| 150 | * |
| 151 | * @param name Function name. |
| 152 | * @param argNumber Number of arguments. |
| 153 | * @param latexPattern This is the LaTex presentation. Variables are marked by "#1", "#2" |
| 154 | * and so on. |
| 155 | */ |
| 156 | private void addBackupFunction(final String name, final String argNumber, |
| 157 | final String latexPattern) { |
| 158 | final String key = name + "_" + argNumber; |
| 159 | final FunctionDefinitionVo function = new FunctionDefinitionVo(); |
| 160 | function.setArgumentNumber(argNumber); |
| 161 | function.setName(name); |
| 162 | function.setLatexPattern(latexPattern); |
| 163 | backupFunctionDefinitions.put(key, function); |
| 164 | } |
| 165 | |
| 166 | public String getLatex(final Element element) { |
| 167 | return getLatex(element, true); |
| 168 | } |
| 169 | |
| 170 | /** |
| 171 | * Get LaTeX element presentation. |
| 172 | * |
| 173 | * @param element Print this element. |
| 174 | * @param first First level? |
| 175 | * @return LaTeX form of element. |
| 176 | */ |
| 177 | String getLatex(final Element element, final boolean first) { |
| 178 | if (element == null) { |
| 179 | return ""; |
| 180 | } |
| 181 | if (element.isAtom()) { |
| 182 | return element.getAtom().getString(); |
| 183 | } |
| 184 | final ElementList list = element.getList(); |
| 185 | |
| 186 | ListType converter = (ListType) elementList2ListType.get(list.getOperator()); |
| 187 | |
| 188 | if (converter == null) { |
| 189 | converter = this.unknown; |
| 190 | } |
| 191 | return converter.getLatex(list, first); |
| 192 | |
| 193 | } |
| 194 | |
| 195 | /** |
| 196 | * Get default definition mapping of predicate definitions. Our last hope. |
| 197 | * |
| 198 | * @return Mapping of predicate definitions. |
| 199 | */ |
| 200 | Map getBackupPredicateDefinitions() { |
| 201 | return this.backupPredicateDefinitions; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * Get default definition mapping of function definitions. Our last hope. |
| 206 | * |
| 207 | * @return Mapping of predicate definitions. |
| 208 | */ |
| 209 | Map getBackupFunctionDefinitions() { |
| 210 | return this.backupFunctionDefinitions; |
| 211 | } |
| 212 | |
| 213 | /** |
| 214 | * Describes the interface for an {@link ElementList} to LaTeX converter. |
| 215 | */ |
| 216 | interface ListType { |
| 217 | |
| 218 | /** |
| 219 | * Transform list into LaTeX. |
| 220 | * |
| 221 | * @param list This list shall be transformed. |
| 222 | * @param first Is the resulting LaTeX formula or term at top level? If so we possibly |
| 223 | * can omit some brackets. |
| 224 | * @return LaTeX formula or term. |
| 225 | */ |
| 226 | public String getLatex(ElementList list, boolean first); |
| 227 | } |
| 228 | |
| 229 | /** |
| 230 | * Transformer for a predicate variable. |
| 231 | */ |
| 232 | class Predvar implements ListType { |
| 233 | public String getLatex(final ElementList list, final boolean first) { |
| 234 | final StringBuffer buffer = new StringBuffer(); |
| 235 | final String identifier = list.getElement(0).getAtom().getString(); |
| 236 | buffer.append(identifier); |
| 237 | if (list.size() > 1) { |
| 238 | buffer.append("("); |
| 239 | for (int i = 1; i < list.size(); i++) { |
| 240 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 241 | if (i + 1 < list.size()) { |
| 242 | buffer.append(", "); |
| 243 | } |
| 244 | } |
| 245 | buffer.append(")"); |
| 246 | } |
| 247 | return buffer.toString(); |
| 248 | } |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * Transformer for a function variable. |
| 253 | */ |
| 254 | class Funvar implements ListType { |
| 255 | public String getLatex(final ElementList list, final boolean first) { |
| 256 | final StringBuffer buffer = new StringBuffer(); |
| 257 | final String identifier = list.getElement(0).getAtom().getString(); |
| 258 | buffer.append(identifier); |
| 259 | if (list.size() > 1) { |
| 260 | buffer.append("("); |
| 261 | for (int i = 1; i < list.size(); i++) { |
| 262 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 263 | if (i + 1 < list.size()) { |
| 264 | buffer.append(", "); |
| 265 | } |
| 266 | } |
| 267 | buffer.append(")"); |
| 268 | } |
| 269 | return buffer.toString(); |
| 270 | } |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * Transformer for a predicate constant. |
| 275 | */ |
| 276 | class Predcon implements ListType { |
| 277 | public String getLatex(final ElementList list, final boolean first) { |
| 278 | final StringBuffer buffer = new StringBuffer(); |
| 279 | final String name = list.getElement(0).getAtom().getString(); |
| 280 | final int arguments = list.size() - 1; |
| 281 | String identifier = name + "_" + (arguments); |
| 282 | // LATER 20060922 m31: is only working for definition name + argument number |
| 283 | // if argument length is dynamic this dosen't work |
| 284 | PredicateDefinition definition = (PredicateDefinition) |
| 285 | Element2LatexImpl.this.labels.getPredicateDefinitions().get(identifier); |
| 286 | if (definition == null) { |
| 287 | // try external modules |
| 288 | try { |
| 289 | final int external = name.indexOf("."); |
| 290 | if (external >= 0) { |
| 291 | final String shortName = name.substring(external + 1); |
| 292 | identifier = shortName + "_" + (arguments); |
| 293 | if (Element2LatexImpl.this.labels.getReferences() != null |
| 294 | && Element2LatexImpl.this.labels.getReferences().size() > 0) { |
| 295 | final String label = name.substring(0, external); |
| 296 | final KernelQedeqBo newProp = (KernelQedeqBo) |
| 297 | Element2LatexImpl.this.labels.getReferences().getQedeqBo(label); |
| 298 | if (newProp != null) { |
| 299 | if (newProp.getExistenceChecker().predicateExists(shortName, |
| 300 | arguments)) { |
| 301 | definition = newProp.getLabels() |
| 302 | .getPredicate(shortName, arguments); |
| 303 | } |
| 304 | } |
| 305 | } |
| 306 | } |
| 307 | } catch (Exception e) { |
| 308 | // try failed... |
| 309 | } |
| 310 | } |
| 311 | // we try our backup |
| 312 | if (definition == null) { |
| 313 | definition = (PredicateDefinition) Element2LatexImpl.this.getBackupPredicateDefinitions() |
| 314 | .get(identifier); |
| 315 | } |
| 316 | if (definition != null) { |
| 317 | final StringBuffer define = new StringBuffer(definition.getLatexPattern()); |
| 318 | for (int i = list.size() - 1; i >= 1; i--) { |
| 319 | StringUtility.replace(define, "#" + i, Element2LatexImpl.this.getLatex( |
| 320 | list.getElement(i), false)); |
| 321 | } |
| 322 | buffer.append(define); |
| 323 | } else { |
| 324 | buffer.append(identifier); |
| 325 | buffer.append("("); |
| 326 | for (int i = 1; i < list.size(); i++) { |
| 327 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 328 | if (i + 1 < list.size()) { |
| 329 | buffer.append(", "); |
| 330 | } |
| 331 | } |
| 332 | buffer.append(")"); |
| 333 | } |
| 334 | return buffer.toString(); |
| 335 | } |
| 336 | } |
| 337 | |
| 338 | /** |
| 339 | * Transformer for a function constant. |
| 340 | */ |
| 341 | class Funcon implements ListType { |
| 342 | |
| 343 | public String getLatex(final ElementList list, final boolean first) { |
| 344 | final StringBuffer buffer = new StringBuffer(); |
| 345 | final String name = list.getElement(0).getAtom().getString(); |
| 346 | final int arguments = list.size() - 1; |
| 347 | String identifier = name + "_" + (arguments); |
| 348 | // LATER 20060922 m31: is only working for definition name + argument number |
| 349 | // if argument length is dynamic this dosen't work |
| 350 | FunctionDefinition definition = (FunctionDefinition) |
| 351 | Element2LatexImpl.this.labels.getFunctionDefinitions().get(identifier); |
| 352 | if (definition == null) { |
| 353 | // try external modules |
| 354 | try { |
| 355 | final int external = name.indexOf("."); |
| 356 | if (external >= 0) { |
| 357 | final String shortName = name.substring(external + 1); |
| 358 | identifier = shortName + "_" + (arguments); |
| 359 | if (Element2LatexImpl.this.labels.getReferences() != null |
| 360 | && Element2LatexImpl.this.labels.getReferences().size() > 0) { |
| 361 | final String label = name.substring(0, external); |
| 362 | final KernelQedeqBo newProp = (KernelQedeqBo) |
| 363 | Element2LatexImpl.this.labels.getReferences().getQedeqBo(label); |
| 364 | if (newProp != null) { |
| 365 | if (newProp.getExistenceChecker().functionExists(shortName, |
| 366 | arguments)) { |
| 367 | definition = newProp.getLabels() |
| 368 | .getFunction(shortName, arguments); |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | } |
| 373 | } catch (Exception e) { |
| 374 | // try failed... |
| 375 | } |
| 376 | } |
| 377 | // we try our backup |
| 378 | if (definition == null) { |
| 379 | definition = (FunctionDefinition) Element2LatexImpl.this.getBackupFunctionDefinitions() |
| 380 | .get(identifier); |
| 381 | } |
| 382 | if (definition != null) { |
| 383 | final StringBuffer define = new StringBuffer(definition.getLatexPattern()); |
| 384 | for (int i = list.size() - 1; i >= 1; i--) { |
| 385 | StringUtility.replace(define, "#" + i, Element2LatexImpl.this. |
| 386 | getLatex(list.getElement(i), false)); |
| 387 | } |
| 388 | buffer.append(define); |
| 389 | } else { |
| 390 | buffer.append(identifier); |
| 391 | buffer.append("("); |
| 392 | for (int i = 1; i < list.size(); i++) { |
| 393 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 394 | if (i + 1 < list.size()) { |
| 395 | buffer.append(", "); |
| 396 | } |
| 397 | } |
| 398 | buffer.append(")"); |
| 399 | } |
| 400 | return buffer.toString(); |
| 401 | } |
| 402 | } |
| 403 | |
| 404 | /** |
| 405 | * Transformer for a subject variable. |
| 406 | */ |
| 407 | static class Var implements ListType { |
| 408 | public String getLatex(final ElementList list, final boolean first) { |
| 409 | final String text = list.getElement(0).getAtom().getString(); |
| 410 | // interpret variable identifier as number |
| 411 | try { |
| 412 | final int index = Integer.parseInt(text); |
| 413 | final String newText = "" + index; |
| 414 | if (!text.equals(newText) || newText.startsWith("-")) { |
| 415 | throw new NumberFormatException("This is no allowed number: " + text); |
| 416 | } |
| 417 | switch (index) { |
| 418 | case 1: |
| 419 | return "x"; |
| 420 | case 2: |
| 421 | return "y"; |
| 422 | case 3: |
| 423 | return "z"; |
| 424 | case 4: |
| 425 | return "u"; |
| 426 | case 5: |
| 427 | return "v"; |
| 428 | case 6: |
| 429 | return "w"; |
| 430 | default: |
| 431 | return "x_" + (index - 6); |
| 432 | } |
| 433 | } catch (NumberFormatException e) { |
| 434 | // variable identifier is no number, just take it as it is |
| 435 | return text; |
| 436 | } |
| 437 | } |
| 438 | } |
| 439 | |
| 440 | /** |
| 441 | * Transformer for a binary logical operator written in infix notation. |
| 442 | */ |
| 443 | class BinaryLogical implements ListType { |
| 444 | |
| 445 | /** LaTeX for operator. */ |
| 446 | private final String latex; |
| 447 | |
| 448 | /** |
| 449 | * Constructor. |
| 450 | * |
| 451 | * @param latex LaTeX for operator. |
| 452 | */ |
| 453 | BinaryLogical(final String latex) { |
| 454 | this.latex = latex; |
| 455 | } |
| 456 | |
| 457 | public String getLatex(final ElementList list, final boolean first) { |
| 458 | final StringBuffer buffer = new StringBuffer(); |
| 459 | final String infix = "\\ " + latex + "\\ "; |
| 460 | if (!first) { |
| 461 | buffer.append("("); |
| 462 | } |
| 463 | // we also handle it if it has not exactly two operands |
| 464 | for (int i = 0; i < list.size(); i++) { |
| 465 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 466 | if (i + 1 < list.size()) { |
| 467 | buffer.append(infix); |
| 468 | } |
| 469 | } |
| 470 | if (!first) { |
| 471 | buffer.append(")"); |
| 472 | } |
| 473 | return buffer.toString(); |
| 474 | } |
| 475 | } |
| 476 | |
| 477 | /** |
| 478 | * Transformer for a quantifier operator. |
| 479 | */ |
| 480 | class Quantifier implements ListType { |
| 481 | |
| 482 | /** LaTeX for quantifier. */ |
| 483 | private final String latex; |
| 484 | |
| 485 | /** |
| 486 | * Constructor. |
| 487 | * |
| 488 | * @param latex LaTeX for quantifier. |
| 489 | */ |
| 490 | Quantifier(final String latex) { |
| 491 | this.latex = latex; |
| 492 | } |
| 493 | |
| 494 | public String getLatex(final ElementList list, final boolean first) { |
| 495 | final StringBuffer buffer = new StringBuffer(); |
| 496 | buffer.append(latex + " "); |
| 497 | for (int i = 0; i < list.size(); i++) { |
| 498 | if (i != 0 || (i == 0 && list.size() <= 2)) { |
| 499 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 500 | } |
| 501 | if (i + 1 < list.size()) { |
| 502 | buffer.append("\\ "); |
| 503 | } |
| 504 | if (list.size() > 2 && i == 1) { |
| 505 | buffer.append("\\ "); |
| 506 | } |
| 507 | } |
| 508 | return buffer.toString(); |
| 509 | } |
| 510 | } |
| 511 | |
| 512 | /** |
| 513 | * Transformer for negation. |
| 514 | */ |
| 515 | class Not implements ListType { |
| 516 | public String getLatex(final ElementList list, final boolean first) { |
| 517 | final StringBuffer buffer = new StringBuffer(); |
| 518 | final String prefix = "\\neg "; |
| 519 | buffer.append(prefix); |
| 520 | for (int i = 0; i < list.size(); i++) { |
| 521 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 522 | } |
| 523 | return buffer.toString(); |
| 524 | } |
| 525 | } |
| 526 | |
| 527 | /** |
| 528 | * Transformer for a class operator. |
| 529 | */ |
| 530 | class Class implements ListType { |
| 531 | public String getLatex(final ElementList list, final boolean first) { |
| 532 | final StringBuffer buffer = new StringBuffer(); |
| 533 | final String prefix = "\\{ "; |
| 534 | buffer.append(prefix); |
| 535 | for (int i = 0; i < list.size(); i++) { |
| 536 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 537 | if (i + 1 < list.size()) { |
| 538 | buffer.append(" \\ | \\ "); |
| 539 | } |
| 540 | } |
| 541 | buffer.append(" \\} "); |
| 542 | return buffer.toString(); |
| 543 | } |
| 544 | } |
| 545 | |
| 546 | /** |
| 547 | * Transformer for class list operator. |
| 548 | */ |
| 549 | class Classlist implements ListType { |
| 550 | public String getLatex(final ElementList list, final boolean first) { |
| 551 | final StringBuffer buffer = new StringBuffer(); |
| 552 | final String prefix = "\\{ "; |
| 553 | buffer.append(prefix); |
| 554 | for (int i = 0; i < list.size(); i++) { |
| 555 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 556 | if (i + 1 < list.size()) { |
| 557 | buffer.append(", \\ "); |
| 558 | } |
| 559 | } |
| 560 | buffer.append(" \\} "); |
| 561 | return buffer.toString(); |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | // /** |
| 566 | // * Transformer for a quantifier intersection. |
| 567 | // */ |
| 568 | // class QuantorIntersection implements ListType { |
| 569 | // public String getLatex(final ElementList list, final boolean first) { |
| 570 | // final StringBuffer buffer = new StringBuffer(); |
| 571 | // final String prefix = "\\bigcap"; |
| 572 | // buffer.append(prefix); |
| 573 | // if (0 < list.size()) { |
| 574 | // buffer.append("{").append(Element2LatexImpl.this.getLatex(list.getElement(0), false)) |
| 575 | // .append("}"); |
| 576 | // } |
| 577 | // for (int i = 1; i < list.size(); i++) { |
| 578 | // buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 579 | // if (i + 1 < list.size()) { |
| 580 | // buffer.append(" \\ \\ "); |
| 581 | // } |
| 582 | // } |
| 583 | // buffer.append(" \\} "); |
| 584 | // return buffer.toString(); |
| 585 | // } |
| 586 | // } |
| 587 | // |
| 588 | // /** |
| 589 | // * LATER mime 20080126: needed? |
| 590 | // */ |
| 591 | // class QuantorUnion implements ListType { |
| 592 | // public String getLatex(final ElementList list, final boolean first) { |
| 593 | // final StringBuffer buffer = new StringBuffer(); |
| 594 | // final String prefix = "\\bigcup"; |
| 595 | // buffer.append(prefix); |
| 596 | // if (0 < list.size()) { |
| 597 | // buffer.append("{").append(Element2LatexImpl.this.getLatex(list.getElement(0), false)) |
| 598 | // .append("}"); |
| 599 | // } |
| 600 | // for (int i = 1; i < list.size(); i++) { |
| 601 | // buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 602 | // if (i + 1 < list.size()) { |
| 603 | // buffer.append(" \\ \\ "); |
| 604 | // } |
| 605 | // } |
| 606 | // buffer.append(" \\} "); |
| 607 | // return buffer.toString(); |
| 608 | // } |
| 609 | // } |
| 610 | // |
| 611 | /** |
| 612 | * If we don't now what kind of type we have we do this. |
| 613 | */ |
| 614 | class Unknown implements ListType { |
| 615 | public String getLatex(final ElementList list, final boolean first) { |
| 616 | final StringBuffer buffer = new StringBuffer(); |
| 617 | buffer.append(list.getOperator()); |
| 618 | buffer.append("("); |
| 619 | for (int i = 0; i < list.size(); i++) { |
| 620 | buffer.append(Element2LatexImpl.this.getLatex(list.getElement(i), false)); |
| 621 | if (i + 1 < list.size()) { |
| 622 | buffer.append(", "); |
| 623 | } |
| 624 | } |
| 625 | buffer.append(")"); |
| 626 | return buffer.toString(); |
| 627 | } |
| 628 | } |
| 629 | |
| 630 | |
| 631 | } |