| 1 | /* |
|---|---|
| 2 | * Copyright (C) 2007-2010 Júlio Vilmar Gesser. |
| 3 | * Copyright (C) 2011, 2013-2020 The JavaParser Team. |
| 4 | * |
| 5 | * This file is part of JavaParser. |
| 6 | * |
| 7 | * JavaParser can be used either under the terms of |
| 8 | * a) the GNU Lesser General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * b) the terms of the Apache License |
| 12 | * |
| 13 | * You should have received a copy of both licenses in LICENCE.LGPL and |
| 14 | * LICENCE.APACHE. Please refer to those files for details. |
| 15 | * |
| 16 | * JavaParser is distributed in the hope that it will be useful, |
| 17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 19 | * GNU Lesser General Public License for more details. |
| 20 | */ |
| 21 | |
| 22 | package com.github.javaparser; |
| 23 | |
| 24 | import com.github.javaparser.ast.CompilationUnit; |
| 25 | import com.github.javaparser.ast.ImportDeclaration; |
| 26 | import com.github.javaparser.ast.Node; |
| 27 | import com.github.javaparser.ast.PackageDeclaration; |
| 28 | import com.github.javaparser.ast.body.BodyDeclaration; |
| 29 | import com.github.javaparser.ast.body.MethodDeclaration; |
| 30 | import com.github.javaparser.ast.body.Parameter; |
| 31 | import com.github.javaparser.ast.body.TypeDeclaration; |
| 32 | import com.github.javaparser.ast.expr.*; |
| 33 | import com.github.javaparser.ast.modules.ModuleDeclaration; |
| 34 | import com.github.javaparser.ast.modules.ModuleDirective; |
| 35 | import com.github.javaparser.ast.stmt.BlockStmt; |
| 36 | import com.github.javaparser.ast.stmt.ExplicitConstructorInvocationStmt; |
| 37 | import com.github.javaparser.ast.stmt.Statement; |
| 38 | import com.github.javaparser.ast.type.ClassOrInterfaceType; |
| 39 | import com.github.javaparser.ast.type.Type; |
| 40 | import com.github.javaparser.ast.type.TypeParameter; |
| 41 | |
| 42 | import java.io.*; |
| 43 | import java.nio.charset.Charset; |
| 44 | import java.nio.file.Path; |
| 45 | |
| 46 | import static com.github.javaparser.ParseStart.*; |
| 47 | import static com.github.javaparser.Problem.PROBLEM_BY_BEGIN_POSITION; |
| 48 | import static com.github.javaparser.Providers.*; |
| 49 | import static com.github.javaparser.utils.Utils.assertNotNull; |
| 50 | |
| 51 | /** |
| 52 | * Parse Java source code and creates Abstract Syntax Trees. |
| 53 | * |
| 54 | * @author Júlio Vilmar Gesser |
| 55 | * @see StaticJavaParser |
| 56 | */ |
| 57 | public final class JavaParser { |
| 58 | private final ParserConfiguration configuration; |
| 59 | |
| 60 | private GeneratedJavaParser astParser = null; |
| 61 | |
| 62 | /** |
| 63 | * Instantiate the parser with default configuration. Note that parsing can also be done with the static methods {@link StaticJavaParser}. |
| 64 | * Creating an instance will reduce setup time between parsing files. |
| 65 | */ |
| 66 | public JavaParser() { |
| 67 | this(new ParserConfiguration()); |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Instantiate the parser. Note that parsing can also be done with the static methods {@link StaticJavaParser}. |
| 72 | * Creating an instance will reduce setup time between parsing files. |
| 73 | */ |
| 74 | public JavaParser(ParserConfiguration configuration) { |
| 75 | this.configuration = configuration; |
| 76 | } |
| 77 | |
| 78 | /** |
| 79 | * @return The configuration for this parser. |
| 80 | */ |
| 81 | public ParserConfiguration getParserConfiguration() { |
| 82 | return this.configuration; |
| 83 | } |
| 84 | |
| 85 | private GeneratedJavaParser getParserForProvider(Provider provider) { |
| 86 | if (astParser == null) { |
| 87 | astParser = new GeneratedJavaParser(provider); |
| 88 | } else { |
| 89 | astParser.reset(provider); |
| 90 | } |
| 91 | astParser.setTabSize(configuration.getTabSize()); |
| 92 | astParser.setStoreTokens(configuration.isStoreTokens()); |
| 93 | if (configuration.getLanguageLevel() != null) { |
| 94 | switch (configuration.getLanguageLevel()) { |
| 95 | case JAVA_13: |
| 96 | case JAVA_14: |
| 97 | astParser.setYieldSupported(); |
| 98 | } |
| 99 | } |
| 100 | return astParser; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Parses source code. |
| 105 | * It takes the source code from a Provider. |
| 106 | * The start indicates what can be found in the source code (compilation unit, block, import...) |
| 107 | * |
| 108 | * @param start refer to the constants in ParseStart to see what can be parsed. |
| 109 | * @param provider refer to Providers to see how you can read source. The provider will be closed after parsing. |
| 110 | * @param <N> the subclass of Node that is the result of parsing in the start. |
| 111 | * @return the parse result, a collection of encountered problems, and some extra data. |
| 112 | */ |
| 113 | public <N extends Node> ParseResult<N> parse(ParseStart<N> start, Provider provider) { |
| 114 | assertNotNull(start); |
| 115 | assertNotNull(provider); |
| 116 | |
| 117 | for (PreProcessor preProcessor : configuration.getPreProcessors()) { |
| 118 | provider = preProcessor.process(provider); |
| 119 | } |
| 120 | |
| 121 | final GeneratedJavaParser parser = getParserForProvider(provider); |
| 122 | try { |
| 123 | N resultNode = start.parse(parser); |
| 124 | ParseResult<N> result = new ParseResult<>(resultNode, parser.problems, parser.getCommentsCollection()); |
| 125 | |
| 126 | configuration.getPostProcessors() |
| 127 | .forEach(postProcessor -> postProcessor.process(result, configuration)); |
| 128 | |
| 129 | result.getProblems() |
| 130 | .sort(PROBLEM_BY_BEGIN_POSITION); |
| 131 | |
| 132 | return result; |
| 133 | } catch (Exception e) { |
| 134 | final String message = e.getMessage() == null ? "Unknown error" : e.getMessage(); |
| 135 | parser.problems.add(new Problem(message, null, e)); |
| 136 | return new ParseResult<>(null, parser.problems, parser.getCommentsCollection()); |
| 137 | } finally { |
| 138 | try { |
| 139 | provider.close(); |
| 140 | } catch (IOException e) { |
| 141 | // Since we're done parsing and have our result, we don't care about any errors. |
| 142 | } |
| 143 | } |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Parses the Java code contained in the {@link InputStream} and returns a |
| 148 | * {@link CompilationUnit} that represents it. |
| 149 | * |
| 150 | * @param in {@link InputStream} containing Java source code. It will be closed after parsing. |
| 151 | * @param encoding encoding of the source code |
| 152 | * @return CompilationUnit representing the Java source code |
| 153 | * @throws ParseProblemException if the source code has parser errors |
| 154 | */ |
| 155 | public ParseResult<CompilationUnit> parse(final InputStream in, Charset encoding) { |
| 156 | return parse(COMPILATION_UNIT, provider(in, encoding)); |
| 157 | } |
| 158 | |
| 159 | /** |
| 160 | * Parses the Java code contained in the {@link InputStream} and returns a |
| 161 | * {@link CompilationUnit} that represents it.<br> |
| 162 | * |
| 163 | * @param in {@link InputStream} containing Java source code. It will be closed after parsing. |
| 164 | * @return CompilationUnit representing the Java source code |
| 165 | * @throws ParseProblemException if the source code has parser errors |
| 166 | */ |
| 167 | public ParseResult<CompilationUnit> parse(final InputStream in) { |
| 168 | return parse(in, configuration.getCharacterEncoding()); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Parses the Java code contained in a {@link File} and returns a |
| 173 | * {@link CompilationUnit} that represents it. |
| 174 | * |
| 175 | * @param file {@link File} containing Java source code. It will be closed after parsing. |
| 176 | * @param encoding encoding of the source code |
| 177 | * @return CompilationUnit representing the Java source code |
| 178 | * @throws ParseProblemException if the source code has parser errors |
| 179 | * @throws FileNotFoundException the file was not found |
| 180 | * @deprecated set the encoding in the {@link ParserConfiguration} |
| 181 | */ |
| 182 | @Deprecated |
| 183 | public ParseResult<CompilationUnit> parse(final File file, final Charset encoding) throws FileNotFoundException { |
| 184 | ParseResult<CompilationUnit> result = parse(COMPILATION_UNIT, provider(file, encoding)); |
| 185 | result.getResult().ifPresent(cu -> cu.setStorage(file.toPath(), encoding)); |
| 186 | return result; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * Parses the Java code contained in a {@link File} and returns a |
| 191 | * {@link CompilationUnit} that represents it.<br> |
| 192 | * |
| 193 | * @param file {@link File} containing Java source code. It will be closed after parsing. |
| 194 | * @return CompilationUnit representing the Java source code |
| 195 | * @throws ParseProblemException if the source code has parser errors |
| 196 | * @throws FileNotFoundException the file was not found |
| 197 | */ |
| 198 | public ParseResult<CompilationUnit> parse(final File file) throws FileNotFoundException { |
| 199 | ParseResult<CompilationUnit> result = parse(COMPILATION_UNIT, provider(file, configuration.getCharacterEncoding())); |
| 200 | result.getResult().ifPresent(cu -> cu.setStorage(file.toPath(), configuration.getCharacterEncoding())); |
| 201 | return result; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * Parses the Java code contained in a file and returns a |
| 206 | * {@link CompilationUnit} that represents it. |
| 207 | * |
| 208 | * @param path path to a file containing Java source code |
| 209 | * @param encoding encoding of the source code |
| 210 | * @return CompilationUnit representing the Java source code |
| 211 | * @throws IOException the path could not be accessed |
| 212 | * @throws ParseProblemException if the source code has parser errors |
| 213 | * @deprecated set the encoding in the {@link ParserConfiguration} |
| 214 | */ |
| 215 | @Deprecated |
| 216 | public ParseResult<CompilationUnit> parse(final Path path, final Charset encoding) throws IOException { |
| 217 | ParseResult<CompilationUnit> result = parse(COMPILATION_UNIT, provider(path, encoding)); |
| 218 | result.getResult().ifPresent(cu -> cu.setStorage(path, encoding)); |
| 219 | return result; |
| 220 | } |
| 221 | |
| 222 | /** |
| 223 | * Parses the Java code contained in a file and returns a |
| 224 | * {@link CompilationUnit} that represents it.<br> |
| 225 | * |
| 226 | * @param path path to a file containing Java source code |
| 227 | * @return CompilationUnit representing the Java source code |
| 228 | * @throws ParseProblemException if the source code has parser errors |
| 229 | * @throws IOException the path could not be accessed |
| 230 | */ |
| 231 | public ParseResult<CompilationUnit> parse(final Path path) throws IOException { |
| 232 | ParseResult<CompilationUnit> result = parse(COMPILATION_UNIT, provider(path, configuration.getCharacterEncoding())); |
| 233 | result.getResult().ifPresent(cu -> cu.setStorage(path, configuration.getCharacterEncoding())); |
| 234 | return result; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Parses the Java code contained in a resource and returns a |
| 239 | * {@link CompilationUnit} that represents it.<br> |
| 240 | * |
| 241 | * @param path path to a resource containing Java source code. As resource is accessed through a class loader, a |
| 242 | * leading "/" is not allowed in pathToResource |
| 243 | * @return CompilationUnit representing the Java source code |
| 244 | * @throws ParseProblemException if the source code has parser errors |
| 245 | * @throws IOException the path could not be accessed |
| 246 | */ |
| 247 | public ParseResult<CompilationUnit> parseResource(final String path) throws IOException { |
| 248 | return parse(COMPILATION_UNIT, resourceProvider(path, configuration.getCharacterEncoding())); |
| 249 | } |
| 250 | |
| 251 | /** |
| 252 | * Parses the Java code contained in a resource and returns a |
| 253 | * {@link CompilationUnit} that represents it.<br> |
| 254 | * |
| 255 | * @param path path to a resource containing Java source code. As resource is accessed through a class loader, a |
| 256 | * leading "/" is not allowed in pathToResource |
| 257 | * @param encoding encoding of the source code |
| 258 | * @return CompilationUnit representing the Java source code |
| 259 | * @throws ParseProblemException if the source code has parser errors |
| 260 | * @throws IOException the path could not be accessed |
| 261 | * @deprecated set the encoding in the {@link ParserConfiguration} |
| 262 | */ |
| 263 | @Deprecated |
| 264 | public ParseResult<CompilationUnit> parseResource(final String path, Charset encoding) throws IOException { |
| 265 | return parse(COMPILATION_UNIT, resourceProvider(path, encoding)); |
| 266 | } |
| 267 | |
| 268 | /** |
| 269 | * Parses the Java code contained in a resource and returns a |
| 270 | * {@link CompilationUnit} that represents it.<br> |
| 271 | * |
| 272 | * @param classLoader the classLoader that is asked to load the resource |
| 273 | * @param path path to a resource containing Java source code. As resource is accessed through a class loader, a |
| 274 | * leading "/" is not allowed in pathToResource |
| 275 | * @return CompilationUnit representing the Java source code |
| 276 | * @throws ParseProblemException if the source code has parser errors |
| 277 | * @throws IOException the path could not be accessed |
| 278 | * @deprecated set the encoding in the {@link ParserConfiguration} |
| 279 | */ |
| 280 | @Deprecated |
| 281 | public ParseResult<CompilationUnit> parseResource(final ClassLoader classLoader, final String path, Charset encoding) throws IOException { |
| 282 | return parse(COMPILATION_UNIT, resourceProvider(classLoader, path, encoding)); |
| 283 | } |
| 284 | |
| 285 | /** |
| 286 | * Parses Java code from a Reader and returns a |
| 287 | * {@link CompilationUnit} that represents it.<br> |
| 288 | * |
| 289 | * @param reader the reader containing Java source code. It will be closed after parsing. |
| 290 | * @return CompilationUnit representing the Java source code |
| 291 | * @throws ParseProblemException if the source code has parser errors |
| 292 | */ |
| 293 | public ParseResult<CompilationUnit> parse(final Reader reader) { |
| 294 | return parse(COMPILATION_UNIT, provider(reader)); |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * Parses the Java code contained in code and returns a |
| 299 | * {@link CompilationUnit} that represents it. |
| 300 | * |
| 301 | * @param code Java source code |
| 302 | * @return CompilationUnit representing the Java source code |
| 303 | * @throws ParseProblemException if the source code has parser errors |
| 304 | */ |
| 305 | public ParseResult<CompilationUnit> parse(String code) { |
| 306 | return parse(COMPILATION_UNIT, provider(code)); |
| 307 | } |
| 308 | |
| 309 | /** |
| 310 | * Parses the Java block contained in a {@link String} and returns a |
| 311 | * {@link BlockStmt} that represents it. |
| 312 | * |
| 313 | * @param blockStatement {@link String} containing Java block code |
| 314 | * @return BlockStmt representing the Java block |
| 315 | * @throws ParseProblemException if the source code has parser errors |
| 316 | */ |
| 317 | public ParseResult<BlockStmt> parseBlock(final String blockStatement) { |
| 318 | return parse(BLOCK, provider(blockStatement)); |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * Parses the Java statement contained in a {@link String} and returns a |
| 323 | * {@link Statement} that represents it. |
| 324 | * |
| 325 | * @param statement {@link String} containing Java statement code |
| 326 | * @return Statement representing the Java statement |
| 327 | * @throws ParseProblemException if the source code has parser errors |
| 328 | */ |
| 329 | public ParseResult<Statement> parseStatement(final String statement) { |
| 330 | return parse(STATEMENT, provider(statement)); |
| 331 | } |
| 332 | |
| 333 | /** |
| 334 | * Parses the Java import contained in a {@link String} and returns a |
| 335 | * {@link ImportDeclaration} that represents it. |
| 336 | * |
| 337 | * @param importDeclaration {@link String} containing Java import code |
| 338 | * @return ImportDeclaration representing the Java import declaration |
| 339 | * @throws ParseProblemException if the source code has parser errors |
| 340 | */ |
| 341 | public ParseResult<ImportDeclaration> parseImport(final String importDeclaration) { |
| 342 | return parse(IMPORT_DECLARATION, provider(importDeclaration)); |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Parses the Java expression contained in a {@link String} and returns a |
| 347 | * {@link Expression} that represents it. |
| 348 | * |
| 349 | * @param expression {@link String} containing Java expression |
| 350 | * @return Expression representing the Java expression |
| 351 | * @throws ParseProblemException if the source code has parser errors |
| 352 | */ |
| 353 | @SuppressWarnings("unchecked") |
| 354 | public <T extends Expression> ParseResult<T> parseExpression(final String expression) { |
| 355 | return (ParseResult<T>) parse(EXPRESSION, provider(expression)); |
| 356 | } |
| 357 | |
| 358 | /** |
| 359 | * Parses the Java annotation contained in a {@link String} and returns a |
| 360 | * {@link AnnotationExpr} that represents it. |
| 361 | * |
| 362 | * @param annotation {@link String} containing Java annotation |
| 363 | * @return AnnotationExpr representing the Java annotation |
| 364 | * @throws ParseProblemException if the source code has parser errors |
| 365 | */ |
| 366 | public ParseResult<AnnotationExpr> parseAnnotation(final String annotation) { |
| 367 | return parse(ANNOTATION, provider(annotation)); |
| 368 | } |
| 369 | |
| 370 | /** |
| 371 | * Parses the Java annotation body declaration(e.g fields or methods) contained in a |
| 372 | * {@link String} and returns a {@link BodyDeclaration} that represents it. |
| 373 | * |
| 374 | * @param body {@link String} containing Java body declaration |
| 375 | * @return BodyDeclaration representing the Java annotation |
| 376 | * @throws ParseProblemException if the source code has parser errors |
| 377 | */ |
| 378 | public ParseResult<BodyDeclaration<?>> parseAnnotationBodyDeclaration(final String body) { |
| 379 | return parse(ANNOTATION_BODY, provider(body)); |
| 380 | } |
| 381 | |
| 382 | /** |
| 383 | * Parses a Java class or interface body declaration(e.g fields or methods) and returns a |
| 384 | * {@link BodyDeclaration} that represents it. |
| 385 | * |
| 386 | * @param body the body of a class or interface |
| 387 | * @return BodyDeclaration representing the Java interface body |
| 388 | * @throws ParseProblemException if the source code has parser errors |
| 389 | */ |
| 390 | @SuppressWarnings("unchecked") |
| 391 | public <T extends BodyDeclaration<?>> ParseResult<T> parseBodyDeclaration(String body) { |
| 392 | return (ParseResult<T>) parse(CLASS_BODY, provider(body)); |
| 393 | } |
| 394 | |
| 395 | /** |
| 396 | * Parses a Java class or interface type name and returns a {@link ClassOrInterfaceType} that represents it. |
| 397 | * |
| 398 | * @param type the type name like a.b.c.X or Y |
| 399 | * @return ClassOrInterfaceType representing the type |
| 400 | * @throws ParseProblemException if the source code has parser errors |
| 401 | */ |
| 402 | public ParseResult<ClassOrInterfaceType> parseClassOrInterfaceType(String type) { |
| 403 | return parse(CLASS_OR_INTERFACE_TYPE, provider(type)); |
| 404 | } |
| 405 | |
| 406 | /** |
| 407 | * Parses a Java type name and returns a {@link Type} that represents it. |
| 408 | * |
| 409 | * @param type the type name like a.b.c.X, Y, or int |
| 410 | * @return ClassOrInterfaceType representing the type |
| 411 | * @throws ParseProblemException if the source code has parser errors |
| 412 | */ |
| 413 | public ParseResult<Type> parseType(String type) { |
| 414 | return parse(TYPE, provider(type)); |
| 415 | } |
| 416 | |
| 417 | /** |
| 418 | * Parses a variable declaration expression and returns a {@link com.github.javaparser.ast.expr.VariableDeclarationExpr} |
| 419 | * that represents it. |
| 420 | * |
| 421 | * @param declaration a variable declaration like {@code int x=2;} |
| 422 | * @return VariableDeclarationExpr representing the type |
| 423 | * @throws ParseProblemException if the source code has parser errors |
| 424 | */ |
| 425 | public ParseResult<VariableDeclarationExpr> parseVariableDeclarationExpr(String declaration) { |
| 426 | return parse(VARIABLE_DECLARATION_EXPR, provider(declaration)); |
| 427 | } |
| 428 | |
| 429 | /** |
| 430 | * Parses the this(...) and super(...) statements that may occur at the start of a constructor. |
| 431 | * |
| 432 | * @param statement a statement like super("hello"); |
| 433 | * @return the AST for the statement. |
| 434 | * @throws ParseProblemException if the source code has parser errors |
| 435 | */ |
| 436 | public ParseResult<ExplicitConstructorInvocationStmt> parseExplicitConstructorInvocationStmt(String statement) { |
| 437 | return parse(EXPLICIT_CONSTRUCTOR_INVOCATION_STMT, provider(statement)); |
| 438 | } |
| 439 | |
| 440 | /** |
| 441 | * Parses a qualified name (one that can have "."s in it) and returns it as a Name. |
| 442 | * |
| 443 | * @param qualifiedName a name like "com.laamella.parameter_source" |
| 444 | * @return the AST for the name |
| 445 | * @throws ParseProblemException if the source code has parser errors |
| 446 | */ |
| 447 | public ParseResult<Name> parseName(String qualifiedName) { |
| 448 | return parse(NAME, provider(qualifiedName)); |
| 449 | } |
| 450 | |
| 451 | /** |
| 452 | * Parses a simple name (one that can NOT have "."s in it) and returns it as a SimpleName. |
| 453 | * |
| 454 | * @param name a name like "parameter_source" |
| 455 | * @return the AST for the name |
| 456 | * @throws ParseProblemException if the source code has parser errors |
| 457 | */ |
| 458 | public ParseResult<SimpleName> parseSimpleName(String name) { |
| 459 | return parse(SIMPLE_NAME, provider(name)); |
| 460 | } |
| 461 | |
| 462 | /** |
| 463 | * Parses a single parameter (a type and a name) and returns it as a Parameter. |
| 464 | * |
| 465 | * @param parameter a parameter like "int[] x" |
| 466 | * @return the AST for the parameter |
| 467 | * @throws ParseProblemException if the source code has parser errors |
| 468 | */ |
| 469 | public ParseResult<Parameter> parseParameter(String parameter) { |
| 470 | return parse(PARAMETER, provider(parameter)); |
| 471 | } |
| 472 | |
| 473 | /** |
| 474 | * Parses a package declaration and returns it as a PackageDeclaration. |
| 475 | * |
| 476 | * @param packageDeclaration a declaration like "package com.microsoft.java;" |
| 477 | * @return the AST for the parameter |
| 478 | * @throws ParseProblemException if the source code has parser errors |
| 479 | */ |
| 480 | public ParseResult<PackageDeclaration> parsePackageDeclaration(String packageDeclaration) { |
| 481 | return parse(PACKAGE_DECLARATION, provider(packageDeclaration)); |
| 482 | } |
| 483 | |
| 484 | /** |
| 485 | * Parses a type declaration and returns it as a TypeDeclaration. |
| 486 | * |
| 487 | * @param typeDeclaration a declaration like "class X {}" |
| 488 | * @return the AST for the type declaration |
| 489 | * @throws ParseProblemException if the source code has parser errors |
| 490 | */ |
| 491 | public ParseResult<TypeDeclaration<?>> parseTypeDeclaration(String typeDeclaration) { |
| 492 | return parse(TYPE_DECLARATION, provider(typeDeclaration)); |
| 493 | } |
| 494 | |
| 495 | /** |
| 496 | * Parses a module declaration and returns it as a ModuleDeclaration. |
| 497 | * |
| 498 | * @param moduleDeclaration a declaration like "module X {}" |
| 499 | * @return the AST for the module declaration |
| 500 | * @throws ParseProblemException if the source code has parser errors |
| 501 | * @see ModuleDeclaration |
| 502 | */ |
| 503 | public ParseResult<ModuleDeclaration> parseModuleDeclaration(String moduleDeclaration) { |
| 504 | return parse(MODULE_DECLARATION, provider(moduleDeclaration)); |
| 505 | } |
| 506 | |
| 507 | /** |
| 508 | * Parses a module directive and returns it as a ModuleDirective. |
| 509 | * |
| 510 | * @param moduleDirective a directive like "opens C;" |
| 511 | * @return the AST for the module directive |
| 512 | * @throws ParseProblemException if the source code has parser errors |
| 513 | * @see ModuleDirective |
| 514 | */ |
| 515 | public ParseResult<ModuleDirective> parseModuleDirective(String moduleDirective) { |
| 516 | return parse(MODULE_DIRECTIVE, provider(moduleDirective)); |
| 517 | } |
| 518 | |
| 519 | |
| 520 | /** |
| 521 | * Parses a type parameter and returns it as a TypeParameter |
| 522 | * |
| 523 | * @param typeParameter a parameter like "T extends Serializable" |
| 524 | * @return the AST for the type parameter |
| 525 | * @throws ParseProblemException if the source code has parser errors |
| 526 | */ |
| 527 | public ParseResult<TypeParameter> parseTypeParameter(String typeParameter) { |
| 528 | return parse(TYPE_PARAMETER, provider(typeParameter)); |
| 529 | } |
| 530 | |
| 531 | /** |
| 532 | * Parses a method declaration and returns it as a MethodDeclaration. |
| 533 | * |
| 534 | * @param methodDeclaration a method declaration like "void foo() {}" |
| 535 | * @return the AST for the method declaration |
| 536 | * @throws ParseProblemException if the source code has parser errors |
| 537 | * @see MethodDeclaration |
| 538 | */ |
| 539 | public ParseResult<MethodDeclaration> parseMethodDeclaration(String methodDeclaration) { |
| 540 | return parse(METHOD_DECLARATION, provider(methodDeclaration)); |
| 541 | } |
| 542 | |
| 543 | } |
| 544 |
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