Mon, 17 Dec 2012 07:47:05 -0800
8004832: Add new doclint package
Reviewed-by: mcimadamore
duke@1 | 1 | /* |
ksrini@1249 | 2 | * Copyright (c) 1999, 2012, Oracle and/or its affiliates. All rights reserved. |
duke@1 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@1 | 4 | * |
duke@1 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@1 | 6 | * under the terms of the GNU General Public License version 2 only, as |
ohair@554 | 7 | * published by the Free Software Foundation. Oracle designates this |
duke@1 | 8 | * particular file as subject to the "Classpath" exception as provided |
ohair@554 | 9 | * by Oracle in the LICENSE file that accompanied this code. |
duke@1 | 10 | * |
duke@1 | 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@1 | 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@1 | 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@1 | 14 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@1 | 15 | * accompanied this code). |
duke@1 | 16 | * |
duke@1 | 17 | * You should have received a copy of the GNU General Public License version |
duke@1 | 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@1 | 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@1 | 20 | * |
ohair@554 | 21 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
ohair@554 | 22 | * or visit www.oracle.com if you need additional information or have any |
ohair@554 | 23 | * questions. |
duke@1 | 24 | */ |
duke@1 | 25 | |
duke@1 | 26 | package com.sun.tools.javac.parser; |
duke@1 | 27 | |
duke@1 | 28 | import java.util.*; |
duke@1 | 29 | |
mcimadamore@1145 | 30 | import com.sun.source.tree.MemberReferenceTree.ReferenceMode; |
mcimadamore@1145 | 31 | |
ksrini@1074 | 32 | import com.sun.tools.javac.code.*; |
mcimadamore@1113 | 33 | import com.sun.tools.javac.parser.Tokens.*; |
mcimadamore@1125 | 34 | import com.sun.tools.javac.parser.Tokens.Comment.CommentStyle; |
duke@1 | 35 | import com.sun.tools.javac.tree.*; |
ksrini@1074 | 36 | import com.sun.tools.javac.tree.JCTree.*; |
duke@1 | 37 | import com.sun.tools.javac.util.*; |
jjg@726 | 38 | import com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag; |
ksrini@1074 | 39 | import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition; |
duke@1 | 40 | import com.sun.tools.javac.util.List; |
ksrini@1074 | 41 | |
jjg@1127 | 42 | import static com.sun.tools.javac.parser.Tokens.TokenKind.*; |
jjg@1127 | 43 | import static com.sun.tools.javac.parser.Tokens.TokenKind.ASSERT; |
jjg@1127 | 44 | import static com.sun.tools.javac.parser.Tokens.TokenKind.CASE; |
jjg@1127 | 45 | import static com.sun.tools.javac.parser.Tokens.TokenKind.CATCH; |
jjg@1127 | 46 | import static com.sun.tools.javac.parser.Tokens.TokenKind.EQ; |
jjg@1127 | 47 | import static com.sun.tools.javac.parser.Tokens.TokenKind.GT; |
jjg@1127 | 48 | import static com.sun.tools.javac.parser.Tokens.TokenKind.IMPORT; |
jjg@1127 | 49 | import static com.sun.tools.javac.parser.Tokens.TokenKind.LT; |
jjg@1409 | 50 | import static com.sun.tools.javac.tree.JCTree.Tag.*; |
duke@1 | 51 | import static com.sun.tools.javac.util.ListBuffer.lb; |
duke@1 | 52 | |
duke@1 | 53 | /** The parser maps a token sequence into an abstract syntax |
duke@1 | 54 | * tree. It operates by recursive descent, with code derived |
duke@1 | 55 | * systematically from an LL(1) grammar. For efficiency reasons, an |
duke@1 | 56 | * operator precedence scheme is used for parsing binary operation |
duke@1 | 57 | * expressions. |
duke@1 | 58 | * |
jjg@581 | 59 | * <p><b>This is NOT part of any supported API. |
jjg@581 | 60 | * If you write code that depends on this, you do so at your own risk. |
duke@1 | 61 | * This code and its internal interfaces are subject to change or |
duke@1 | 62 | * deletion without notice.</b> |
duke@1 | 63 | */ |
jjg@111 | 64 | public class JavacParser implements Parser { |
duke@1 | 65 | |
duke@1 | 66 | /** The number of precedence levels of infix operators. |
duke@1 | 67 | */ |
duke@1 | 68 | private static final int infixPrecedenceLevels = 10; |
duke@1 | 69 | |
duke@1 | 70 | /** The scanner used for lexical analysis. |
duke@1 | 71 | */ |
ksrini@1062 | 72 | protected Lexer S; |
duke@1 | 73 | |
duke@1 | 74 | /** The factory to be used for abstract syntax tree construction. |
duke@1 | 75 | */ |
duke@1 | 76 | protected TreeMaker F; |
duke@1 | 77 | |
duke@1 | 78 | /** The log to be used for error diagnostics. |
duke@1 | 79 | */ |
duke@1 | 80 | private Log log; |
duke@1 | 81 | |
duke@1 | 82 | /** The Source language setting. */ |
duke@1 | 83 | private Source source; |
duke@1 | 84 | |
duke@1 | 85 | /** The name table. */ |
jjg@113 | 86 | private Names names; |
duke@1 | 87 | |
ksrini@1138 | 88 | /** End position mappings container */ |
ksrini@1138 | 89 | private final AbstractEndPosTable endPosTable; |
ksrini@1138 | 90 | |
vromero@1400 | 91 | interface ErrorRecoveryAction { |
vromero@1400 | 92 | JCTree doRecover(JavacParser parser); |
vromero@1400 | 93 | } |
vromero@1400 | 94 | |
vromero@1400 | 95 | enum BasicErrorRecoveryAction implements ErrorRecoveryAction { |
vromero@1400 | 96 | BLOCK_STMT {public JCTree doRecover(JavacParser parser) { return parser.parseStatementAsBlock(); }}, |
vromero@1400 | 97 | CATCH_CLAUSE {public JCTree doRecover(JavacParser parser) { return parser.catchClause(); }} |
vromero@1400 | 98 | } |
vromero@1400 | 99 | |
duke@1 | 100 | /** Construct a parser from a given scanner, tree factory and log. |
duke@1 | 101 | */ |
jjg@111 | 102 | protected JavacParser(ParserFactory fac, |
duke@1 | 103 | Lexer S, |
jjg@111 | 104 | boolean keepDocComments, |
ksrini@1138 | 105 | boolean keepLineMap, |
ksrini@1138 | 106 | boolean keepEndPositions) { |
duke@1 | 107 | this.S = S; |
mcimadamore@1113 | 108 | nextToken(); // prime the pump |
duke@1 | 109 | this.F = fac.F; |
duke@1 | 110 | this.log = fac.log; |
duke@1 | 111 | this.names = fac.names; |
duke@1 | 112 | this.source = fac.source; |
duke@1 | 113 | this.allowGenerics = source.allowGenerics(); |
duke@1 | 114 | this.allowVarargs = source.allowVarargs(); |
duke@1 | 115 | this.allowAsserts = source.allowAsserts(); |
duke@1 | 116 | this.allowEnums = source.allowEnums(); |
duke@1 | 117 | this.allowForeach = source.allowForeach(); |
duke@1 | 118 | this.allowStaticImport = source.allowStaticImport(); |
duke@1 | 119 | this.allowAnnotations = source.allowAnnotations(); |
darcy@609 | 120 | this.allowTWR = source.allowTryWithResources(); |
mcimadamore@537 | 121 | this.allowDiamond = source.allowDiamond(); |
mcimadamore@550 | 122 | this.allowMulticatch = source.allowMulticatch(); |
ksrini@1062 | 123 | this.allowStringFolding = fac.options.getBoolean("allowStringFolding", true); |
mcimadamore@1415 | 124 | this.allowLambda = source.allowLambda(); |
mcimadamore@1415 | 125 | this.allowMethodReferences = source.allowMethodReferences(); |
mcimadamore@1415 | 126 | this.allowDefaultMethods = source.allowDefaultMethods(); |
mcimadamore@1436 | 127 | this.allowIntersectionTypesInCast = |
mcimadamore@1436 | 128 | source.allowIntersectionTypesInCast() && |
mcimadamore@1436 | 129 | fac.options.isSet("allowIntersectionTypes"); |
duke@1 | 130 | this.keepDocComments = keepDocComments; |
jjg@1409 | 131 | docComments = newDocCommentTable(keepDocComments, fac); |
jjg@111 | 132 | this.keepLineMap = keepLineMap; |
duke@1 | 133 | this.errorTree = F.Erroneous(); |
ksrini@1138 | 134 | endPosTable = newEndPosTable(keepEndPositions); |
duke@1 | 135 | } |
duke@1 | 136 | |
ksrini@1138 | 137 | protected AbstractEndPosTable newEndPosTable(boolean keepEndPositions) { |
ksrini@1138 | 138 | return keepEndPositions |
ksrini@1138 | 139 | ? new SimpleEndPosTable() |
ksrini@1138 | 140 | : new EmptyEndPosTable(); |
ksrini@1138 | 141 | } |
jjg@1280 | 142 | |
jjg@1409 | 143 | protected DocCommentTable newDocCommentTable(boolean keepDocComments, ParserFactory fac) { |
jjg@1409 | 144 | return keepDocComments ? new LazyDocCommentTable(fac) : null; |
jjg@1280 | 145 | } |
jjg@1280 | 146 | |
duke@1 | 147 | /** Switch: Should generics be recognized? |
duke@1 | 148 | */ |
duke@1 | 149 | boolean allowGenerics; |
duke@1 | 150 | |
mcimadamore@537 | 151 | /** Switch: Should diamond operator be recognized? |
mcimadamore@537 | 152 | */ |
mcimadamore@537 | 153 | boolean allowDiamond; |
mcimadamore@537 | 154 | |
mcimadamore@550 | 155 | /** Switch: Should multicatch clause be accepted? |
mcimadamore@550 | 156 | */ |
mcimadamore@550 | 157 | boolean allowMulticatch; |
mcimadamore@550 | 158 | |
duke@1 | 159 | /** Switch: Should varargs be recognized? |
duke@1 | 160 | */ |
duke@1 | 161 | boolean allowVarargs; |
duke@1 | 162 | |
duke@1 | 163 | /** Switch: should we recognize assert statements, or just give a warning? |
duke@1 | 164 | */ |
duke@1 | 165 | boolean allowAsserts; |
duke@1 | 166 | |
duke@1 | 167 | /** Switch: should we recognize enums, or just give a warning? |
duke@1 | 168 | */ |
duke@1 | 169 | boolean allowEnums; |
duke@1 | 170 | |
duke@1 | 171 | /** Switch: should we recognize foreach? |
duke@1 | 172 | */ |
duke@1 | 173 | boolean allowForeach; |
duke@1 | 174 | |
duke@1 | 175 | /** Switch: should we recognize foreach? |
duke@1 | 176 | */ |
duke@1 | 177 | boolean allowStaticImport; |
duke@1 | 178 | |
duke@1 | 179 | /** Switch: should we recognize annotations? |
duke@1 | 180 | */ |
duke@1 | 181 | boolean allowAnnotations; |
duke@1 | 182 | |
darcy@840 | 183 | /** Switch: should we recognize try-with-resources? |
darcy@609 | 184 | */ |
darcy@609 | 185 | boolean allowTWR; |
darcy@609 | 186 | |
ksrini@1062 | 187 | /** Switch: should we fold strings? |
ksrini@1062 | 188 | */ |
ksrini@1062 | 189 | boolean allowStringFolding; |
ksrini@1062 | 190 | |
mcimadamore@1144 | 191 | /** Switch: should we recognize lambda expressions? |
mcimadamore@1144 | 192 | */ |
mcimadamore@1144 | 193 | boolean allowLambda; |
mcimadamore@1144 | 194 | |
mcimadamore@1145 | 195 | /** Switch: should we allow method/constructor references? |
mcimadamore@1145 | 196 | */ |
mcimadamore@1145 | 197 | boolean allowMethodReferences; |
mcimadamore@1145 | 198 | |
mcimadamore@1366 | 199 | /** Switch: should we allow default methods in interfaces? |
mcimadamore@1366 | 200 | */ |
mcimadamore@1366 | 201 | boolean allowDefaultMethods; |
mcimadamore@1366 | 202 | |
mcimadamore@1436 | 203 | /** Switch: should we allow intersection types in cast? |
mcimadamore@1436 | 204 | */ |
mcimadamore@1436 | 205 | boolean allowIntersectionTypesInCast; |
mcimadamore@1436 | 206 | |
duke@1 | 207 | /** Switch: should we keep docComments? |
duke@1 | 208 | */ |
duke@1 | 209 | boolean keepDocComments; |
duke@1 | 210 | |
jjg@111 | 211 | /** Switch: should we keep line table? |
jjg@111 | 212 | */ |
jjg@111 | 213 | boolean keepLineMap; |
jjg@111 | 214 | |
duke@1 | 215 | /** When terms are parsed, the mode determines which is expected: |
duke@1 | 216 | * mode = EXPR : an expression |
duke@1 | 217 | * mode = TYPE : a type |
duke@1 | 218 | * mode = NOPARAMS : no parameters allowed for type |
duke@1 | 219 | * mode = TYPEARG : type argument |
duke@1 | 220 | */ |
mcimadamore@537 | 221 | static final int EXPR = 0x1; |
mcimadamore@537 | 222 | static final int TYPE = 0x2; |
mcimadamore@537 | 223 | static final int NOPARAMS = 0x4; |
mcimadamore@537 | 224 | static final int TYPEARG = 0x8; |
mcimadamore@537 | 225 | static final int DIAMOND = 0x10; |
duke@1 | 226 | |
duke@1 | 227 | /** The current mode. |
duke@1 | 228 | */ |
duke@1 | 229 | private int mode = 0; |
duke@1 | 230 | |
duke@1 | 231 | /** The mode of the term that was parsed last. |
duke@1 | 232 | */ |
duke@1 | 233 | private int lastmode = 0; |
duke@1 | 234 | |
mcimadamore@1113 | 235 | /* ---------- token management -------------- */ |
mcimadamore@1113 | 236 | |
mcimadamore@1113 | 237 | protected Token token; |
mcimadamore@1113 | 238 | |
jjg@1409 | 239 | public Token token() { |
jjg@1409 | 240 | return token; |
jjg@1409 | 241 | } |
jjg@1409 | 242 | |
jjg@1409 | 243 | public void nextToken() { |
mcimadamore@1113 | 244 | S.nextToken(); |
mcimadamore@1113 | 245 | token = S.token(); |
mcimadamore@1113 | 246 | } |
mcimadamore@1113 | 247 | |
mcimadamore@1144 | 248 | protected boolean peekToken(TokenKind tk) { |
mcimadamore@1436 | 249 | return peekToken(0, tk); |
mcimadamore@1436 | 250 | } |
mcimadamore@1436 | 251 | |
mcimadamore@1436 | 252 | protected boolean peekToken(int lookahead, TokenKind tk) { |
mcimadamore@1436 | 253 | return S.token(lookahead + 1).kind == tk; |
mcimadamore@1144 | 254 | } |
mcimadamore@1144 | 255 | |
mcimadamore@1144 | 256 | protected boolean peekToken(TokenKind tk1, TokenKind tk2) { |
mcimadamore@1436 | 257 | return peekToken(0, tk1, tk2); |
mcimadamore@1436 | 258 | } |
mcimadamore@1436 | 259 | |
mcimadamore@1436 | 260 | protected boolean peekToken(int lookahead, TokenKind tk1, TokenKind tk2) { |
mcimadamore@1436 | 261 | return S.token(lookahead + 1).kind == tk1 && |
mcimadamore@1436 | 262 | S.token(lookahead + 2).kind == tk2; |
mcimadamore@1144 | 263 | } |
mcimadamore@1144 | 264 | |
mcimadamore@1144 | 265 | protected boolean peekToken(TokenKind tk1, TokenKind tk2, TokenKind tk3) { |
mcimadamore@1436 | 266 | return peekToken(0, tk1, tk2, tk3); |
mcimadamore@1436 | 267 | } |
mcimadamore@1436 | 268 | |
mcimadamore@1436 | 269 | protected boolean peekToken(int lookahead, TokenKind tk1, TokenKind tk2, TokenKind tk3) { |
mcimadamore@1436 | 270 | return S.token(lookahead + 1).kind == tk1 && |
mcimadamore@1436 | 271 | S.token(lookahead + 2).kind == tk2 && |
mcimadamore@1436 | 272 | S.token(lookahead + 3).kind == tk3; |
mcimadamore@1144 | 273 | } |
mcimadamore@1144 | 274 | |
mcimadamore@1144 | 275 | protected boolean peekToken(TokenKind... kinds) { |
mcimadamore@1436 | 276 | return peekToken(0, kinds); |
mcimadamore@1436 | 277 | } |
mcimadamore@1436 | 278 | |
mcimadamore@1436 | 279 | protected boolean peekToken(int lookahead, TokenKind... kinds) { |
mcimadamore@1436 | 280 | for (; lookahead < kinds.length ; lookahead++) { |
mcimadamore@1144 | 281 | if (S.token(lookahead + 1).kind != kinds[lookahead]) { |
mcimadamore@1144 | 282 | return false; |
mcimadamore@1144 | 283 | } |
mcimadamore@1144 | 284 | } |
mcimadamore@1144 | 285 | return true; |
mcimadamore@1144 | 286 | } |
mcimadamore@1144 | 287 | |
mcimadamore@1113 | 288 | /* ---------- error recovery -------------- */ |
duke@1 | 289 | |
duke@1 | 290 | private JCErroneous errorTree; |
duke@1 | 291 | |
duke@1 | 292 | /** Skip forward until a suitable stop token is found. |
duke@1 | 293 | */ |
duke@1 | 294 | private void skip(boolean stopAtImport, boolean stopAtMemberDecl, boolean stopAtIdentifier, boolean stopAtStatement) { |
duke@1 | 295 | while (true) { |
mcimadamore@1113 | 296 | switch (token.kind) { |
duke@1 | 297 | case SEMI: |
mcimadamore@1113 | 298 | nextToken(); |
duke@1 | 299 | return; |
duke@1 | 300 | case PUBLIC: |
duke@1 | 301 | case FINAL: |
duke@1 | 302 | case ABSTRACT: |
duke@1 | 303 | case MONKEYS_AT: |
duke@1 | 304 | case EOF: |
duke@1 | 305 | case CLASS: |
duke@1 | 306 | case INTERFACE: |
duke@1 | 307 | case ENUM: |
duke@1 | 308 | return; |
duke@1 | 309 | case IMPORT: |
duke@1 | 310 | if (stopAtImport) |
duke@1 | 311 | return; |
duke@1 | 312 | break; |
duke@1 | 313 | case LBRACE: |
duke@1 | 314 | case RBRACE: |
duke@1 | 315 | case PRIVATE: |
duke@1 | 316 | case PROTECTED: |
duke@1 | 317 | case STATIC: |
duke@1 | 318 | case TRANSIENT: |
duke@1 | 319 | case NATIVE: |
duke@1 | 320 | case VOLATILE: |
duke@1 | 321 | case SYNCHRONIZED: |
duke@1 | 322 | case STRICTFP: |
duke@1 | 323 | case LT: |
duke@1 | 324 | case BYTE: |
duke@1 | 325 | case SHORT: |
duke@1 | 326 | case CHAR: |
duke@1 | 327 | case INT: |
duke@1 | 328 | case LONG: |
duke@1 | 329 | case FLOAT: |
duke@1 | 330 | case DOUBLE: |
duke@1 | 331 | case BOOLEAN: |
duke@1 | 332 | case VOID: |
duke@1 | 333 | if (stopAtMemberDecl) |
duke@1 | 334 | return; |
duke@1 | 335 | break; |
duke@1 | 336 | case IDENTIFIER: |
duke@1 | 337 | if (stopAtIdentifier) |
duke@1 | 338 | return; |
duke@1 | 339 | break; |
duke@1 | 340 | case CASE: |
duke@1 | 341 | case DEFAULT: |
duke@1 | 342 | case IF: |
duke@1 | 343 | case FOR: |
duke@1 | 344 | case WHILE: |
duke@1 | 345 | case DO: |
duke@1 | 346 | case TRY: |
duke@1 | 347 | case SWITCH: |
duke@1 | 348 | case RETURN: |
duke@1 | 349 | case THROW: |
duke@1 | 350 | case BREAK: |
duke@1 | 351 | case CONTINUE: |
duke@1 | 352 | case ELSE: |
duke@1 | 353 | case FINALLY: |
duke@1 | 354 | case CATCH: |
duke@1 | 355 | if (stopAtStatement) |
duke@1 | 356 | return; |
duke@1 | 357 | break; |
duke@1 | 358 | } |
mcimadamore@1113 | 359 | nextToken(); |
duke@1 | 360 | } |
duke@1 | 361 | } |
duke@1 | 362 | |
mcimadamore@1113 | 363 | private JCErroneous syntaxError(int pos, String key, TokenKind... args) { |
ksrini@1074 | 364 | return syntaxError(pos, List.<JCTree>nil(), key, args); |
duke@1 | 365 | } |
duke@1 | 366 | |
mcimadamore@1113 | 367 | private JCErroneous syntaxError(int pos, List<JCTree> errs, String key, TokenKind... args) { |
duke@1 | 368 | setErrorEndPos(pos); |
ksrini@1074 | 369 | JCErroneous err = F.at(pos).Erroneous(errs); |
ksrini@1074 | 370 | reportSyntaxError(err, key, (Object[])args); |
ksrini@1074 | 371 | if (errs != null) { |
ksrini@1074 | 372 | JCTree last = errs.last(); |
ksrini@1074 | 373 | if (last != null) |
ksrini@1074 | 374 | storeEnd(last, pos); |
ksrini@1074 | 375 | } |
ksrini@1074 | 376 | return toP(err); |
duke@1 | 377 | } |
duke@1 | 378 | |
duke@1 | 379 | private int errorPos = Position.NOPOS; |
ksrini@1074 | 380 | |
duke@1 | 381 | /** |
ksrini@1074 | 382 | * Report a syntax using the given the position parameter and arguments, |
ksrini@1074 | 383 | * unless one was already reported at the same position. |
duke@1 | 384 | */ |
mcimadamore@80 | 385 | private void reportSyntaxError(int pos, String key, Object... args) { |
ksrini@1074 | 386 | JCDiagnostic.DiagnosticPosition diag = new JCDiagnostic.SimpleDiagnosticPosition(pos); |
ksrini@1074 | 387 | reportSyntaxError(diag, key, args); |
ksrini@1074 | 388 | } |
ksrini@1074 | 389 | |
ksrini@1074 | 390 | /** |
ksrini@1074 | 391 | * Report a syntax error using the given DiagnosticPosition object and |
ksrini@1074 | 392 | * arguments, unless one was already reported at the same position. |
ksrini@1074 | 393 | */ |
ksrini@1074 | 394 | private void reportSyntaxError(JCDiagnostic.DiagnosticPosition diagPos, String key, Object... args) { |
ksrini@1074 | 395 | int pos = diagPos.getPreferredPosition(); |
duke@1 | 396 | if (pos > S.errPos() || pos == Position.NOPOS) { |
mcimadamore@1113 | 397 | if (token.kind == EOF) { |
ksrini@1074 | 398 | error(diagPos, "premature.eof"); |
ksrini@1074 | 399 | } else { |
ksrini@1074 | 400 | error(diagPos, key, args); |
ksrini@1074 | 401 | } |
duke@1 | 402 | } |
duke@1 | 403 | S.errPos(pos); |
mcimadamore@1113 | 404 | if (token.pos == errorPos) |
mcimadamore@1113 | 405 | nextToken(); // guarantee progress |
mcimadamore@1113 | 406 | errorPos = token.pos; |
duke@1 | 407 | } |
duke@1 | 408 | |
duke@1 | 409 | |
duke@1 | 410 | /** Generate a syntax error at current position unless one was already |
duke@1 | 411 | * reported at the same position. |
duke@1 | 412 | */ |
duke@1 | 413 | private JCErroneous syntaxError(String key) { |
mcimadamore@1113 | 414 | return syntaxError(token.pos, key); |
duke@1 | 415 | } |
duke@1 | 416 | |
duke@1 | 417 | /** Generate a syntax error at current position unless one was |
duke@1 | 418 | * already reported at the same position. |
duke@1 | 419 | */ |
mcimadamore@1113 | 420 | private JCErroneous syntaxError(String key, TokenKind arg) { |
mcimadamore@1113 | 421 | return syntaxError(token.pos, key, arg); |
duke@1 | 422 | } |
duke@1 | 423 | |
duke@1 | 424 | /** If next input token matches given token, skip it, otherwise report |
duke@1 | 425 | * an error. |
duke@1 | 426 | */ |
mcimadamore@1113 | 427 | public void accept(TokenKind tk) { |
mcimadamore@1113 | 428 | if (token.kind == tk) { |
mcimadamore@1113 | 429 | nextToken(); |
duke@1 | 430 | } else { |
mcimadamore@1113 | 431 | setErrorEndPos(token.pos); |
mcimadamore@1113 | 432 | reportSyntaxError(S.prevToken().endPos, "expected", tk); |
duke@1 | 433 | } |
duke@1 | 434 | } |
duke@1 | 435 | |
duke@1 | 436 | /** Report an illegal start of expression/type error at given position. |
duke@1 | 437 | */ |
duke@1 | 438 | JCExpression illegal(int pos) { |
ksrini@1074 | 439 | setErrorEndPos(pos); |
duke@1 | 440 | if ((mode & EXPR) != 0) |
duke@1 | 441 | return syntaxError(pos, "illegal.start.of.expr"); |
duke@1 | 442 | else |
duke@1 | 443 | return syntaxError(pos, "illegal.start.of.type"); |
duke@1 | 444 | |
duke@1 | 445 | } |
duke@1 | 446 | |
duke@1 | 447 | /** Report an illegal start of expression/type error at current position. |
duke@1 | 448 | */ |
duke@1 | 449 | JCExpression illegal() { |
mcimadamore@1113 | 450 | return illegal(token.pos); |
duke@1 | 451 | } |
duke@1 | 452 | |
duke@1 | 453 | /** Diagnose a modifier flag from the set, if any. */ |
duke@1 | 454 | void checkNoMods(long mods) { |
duke@1 | 455 | if (mods != 0) { |
duke@1 | 456 | long lowestMod = mods & -mods; |
mcimadamore@1113 | 457 | error(token.pos, "mod.not.allowed.here", |
mcimadamore@80 | 458 | Flags.asFlagSet(lowestMod)); |
duke@1 | 459 | } |
duke@1 | 460 | } |
duke@1 | 461 | |
duke@1 | 462 | /* ---------- doc comments --------- */ |
duke@1 | 463 | |
jjg@1280 | 464 | /** A table to store all documentation comments |
duke@1 | 465 | * indexed by the tree nodes they refer to. |
duke@1 | 466 | * defined only if option flag keepDocComment is set. |
duke@1 | 467 | */ |
jjg@1280 | 468 | private final DocCommentTable docComments; |
duke@1 | 469 | |
duke@1 | 470 | /** Make an entry into docComments hashtable, |
duke@1 | 471 | * provided flag keepDocComments is set and given doc comment is non-null. |
duke@1 | 472 | * @param tree The tree to be used as index in the hashtable |
duke@1 | 473 | * @param dc The doc comment to associate with the tree, or null. |
duke@1 | 474 | */ |
jjg@1280 | 475 | void attach(JCTree tree, Comment dc) { |
duke@1 | 476 | if (keepDocComments && dc != null) { |
duke@1 | 477 | // System.out.println("doc comment = ");System.out.println(dc);//DEBUG |
jjg@1280 | 478 | docComments.putComment(tree, dc); |
duke@1 | 479 | } |
duke@1 | 480 | } |
duke@1 | 481 | |
duke@1 | 482 | /* -------- source positions ------- */ |
duke@1 | 483 | |
duke@1 | 484 | private void setErrorEndPos(int errPos) { |
ksrini@1138 | 485 | endPosTable.setErrorEndPos(errPos); |
duke@1 | 486 | } |
duke@1 | 487 | |
ksrini@1138 | 488 | private void storeEnd(JCTree tree, int endpos) { |
ksrini@1138 | 489 | endPosTable.storeEnd(tree, endpos); |
duke@1 | 490 | } |
duke@1 | 491 | |
ksrini@1138 | 492 | private <T extends JCTree> T to(T t) { |
ksrini@1138 | 493 | return endPosTable.to(t); |
ksrini@1138 | 494 | } |
duke@1 | 495 | |
ksrini@1138 | 496 | private <T extends JCTree> T toP(T t) { |
ksrini@1138 | 497 | return endPosTable.toP(t); |
ksrini@1138 | 498 | } |
duke@1 | 499 | |
duke@1 | 500 | /** Get the start position for a tree node. The start position is |
duke@1 | 501 | * defined to be the position of the first character of the first |
duke@1 | 502 | * token of the node's source text. |
duke@1 | 503 | * @param tree The tree node |
duke@1 | 504 | */ |
duke@1 | 505 | public int getStartPos(JCTree tree) { |
duke@1 | 506 | return TreeInfo.getStartPos(tree); |
duke@1 | 507 | } |
duke@1 | 508 | |
duke@1 | 509 | /** |
duke@1 | 510 | * Get the end position for a tree node. The end position is |
duke@1 | 511 | * defined to be the position of the last character of the last |
duke@1 | 512 | * token of the node's source text. Returns Position.NOPOS if end |
duke@1 | 513 | * positions are not generated or the position is otherwise not |
duke@1 | 514 | * found. |
duke@1 | 515 | * @param tree The tree node |
duke@1 | 516 | */ |
duke@1 | 517 | public int getEndPos(JCTree tree) { |
ksrini@1138 | 518 | return endPosTable.getEndPos(tree); |
duke@1 | 519 | } |
duke@1 | 520 | |
duke@1 | 521 | |
duke@1 | 522 | |
duke@1 | 523 | /* ---------- parsing -------------- */ |
duke@1 | 524 | |
duke@1 | 525 | /** |
duke@1 | 526 | * Ident = IDENTIFIER |
duke@1 | 527 | */ |
duke@1 | 528 | Name ident() { |
mcimadamore@1113 | 529 | if (token.kind == IDENTIFIER) { |
mcimadamore@1113 | 530 | Name name = token.name(); |
mcimadamore@1113 | 531 | nextToken(); |
duke@1 | 532 | return name; |
mcimadamore@1113 | 533 | } else if (token.kind == ASSERT) { |
duke@1 | 534 | if (allowAsserts) { |
mcimadamore@1113 | 535 | error(token.pos, "assert.as.identifier"); |
mcimadamore@1113 | 536 | nextToken(); |
duke@1 | 537 | return names.error; |
duke@1 | 538 | } else { |
mcimadamore@1113 | 539 | warning(token.pos, "assert.as.identifier"); |
mcimadamore@1113 | 540 | Name name = token.name(); |
mcimadamore@1113 | 541 | nextToken(); |
duke@1 | 542 | return name; |
duke@1 | 543 | } |
mcimadamore@1113 | 544 | } else if (token.kind == ENUM) { |
duke@1 | 545 | if (allowEnums) { |
mcimadamore@1113 | 546 | error(token.pos, "enum.as.identifier"); |
mcimadamore@1113 | 547 | nextToken(); |
duke@1 | 548 | return names.error; |
duke@1 | 549 | } else { |
mcimadamore@1113 | 550 | warning(token.pos, "enum.as.identifier"); |
mcimadamore@1113 | 551 | Name name = token.name(); |
mcimadamore@1113 | 552 | nextToken(); |
duke@1 | 553 | return name; |
duke@1 | 554 | } |
duke@1 | 555 | } else { |
duke@1 | 556 | accept(IDENTIFIER); |
duke@1 | 557 | return names.error; |
duke@1 | 558 | } |
duke@1 | 559 | } |
duke@1 | 560 | |
duke@1 | 561 | /** |
duke@1 | 562 | * Qualident = Ident { DOT Ident } |
duke@1 | 563 | */ |
duke@1 | 564 | public JCExpression qualident() { |
mcimadamore@1113 | 565 | JCExpression t = toP(F.at(token.pos).Ident(ident())); |
mcimadamore@1113 | 566 | while (token.kind == DOT) { |
mcimadamore@1113 | 567 | int pos = token.pos; |
mcimadamore@1113 | 568 | nextToken(); |
duke@1 | 569 | t = toP(F.at(pos).Select(t, ident())); |
duke@1 | 570 | } |
duke@1 | 571 | return t; |
duke@1 | 572 | } |
duke@1 | 573 | |
ksrini@1074 | 574 | JCExpression literal(Name prefix) { |
mcimadamore@1113 | 575 | return literal(prefix, token.pos); |
ksrini@1074 | 576 | } |
ksrini@1074 | 577 | |
duke@1 | 578 | /** |
duke@1 | 579 | * Literal = |
duke@1 | 580 | * INTLITERAL |
duke@1 | 581 | * | LONGLITERAL |
duke@1 | 582 | * | FLOATLITERAL |
duke@1 | 583 | * | DOUBLELITERAL |
duke@1 | 584 | * | CHARLITERAL |
duke@1 | 585 | * | STRINGLITERAL |
duke@1 | 586 | * | TRUE |
duke@1 | 587 | * | FALSE |
duke@1 | 588 | * | NULL |
duke@1 | 589 | */ |
ksrini@1074 | 590 | JCExpression literal(Name prefix, int pos) { |
duke@1 | 591 | JCExpression t = errorTree; |
mcimadamore@1113 | 592 | switch (token.kind) { |
duke@1 | 593 | case INTLITERAL: |
duke@1 | 594 | try { |
duke@1 | 595 | t = F.at(pos).Literal( |
jjg@1374 | 596 | TypeTag.INT, |
mcimadamore@1113 | 597 | Convert.string2int(strval(prefix), token.radix())); |
duke@1 | 598 | } catch (NumberFormatException ex) { |
mcimadamore@1113 | 599 | error(token.pos, "int.number.too.large", strval(prefix)); |
duke@1 | 600 | } |
duke@1 | 601 | break; |
duke@1 | 602 | case LONGLITERAL: |
duke@1 | 603 | try { |
duke@1 | 604 | t = F.at(pos).Literal( |
jjg@1374 | 605 | TypeTag.LONG, |
mcimadamore@1113 | 606 | new Long(Convert.string2long(strval(prefix), token.radix()))); |
duke@1 | 607 | } catch (NumberFormatException ex) { |
mcimadamore@1113 | 608 | error(token.pos, "int.number.too.large", strval(prefix)); |
duke@1 | 609 | } |
duke@1 | 610 | break; |
duke@1 | 611 | case FLOATLITERAL: { |
mcimadamore@1113 | 612 | String proper = token.radix() == 16 ? |
mcimadamore@1113 | 613 | ("0x"+ token.stringVal()) : |
mcimadamore@1113 | 614 | token.stringVal(); |
duke@1 | 615 | Float n; |
duke@1 | 616 | try { |
duke@1 | 617 | n = Float.valueOf(proper); |
duke@1 | 618 | } catch (NumberFormatException ex) { |
jjg@788 | 619 | // error already reported in scanner |
duke@1 | 620 | n = Float.NaN; |
duke@1 | 621 | } |
duke@1 | 622 | if (n.floatValue() == 0.0f && !isZero(proper)) |
mcimadamore@1113 | 623 | error(token.pos, "fp.number.too.small"); |
duke@1 | 624 | else if (n.floatValue() == Float.POSITIVE_INFINITY) |
mcimadamore@1113 | 625 | error(token.pos, "fp.number.too.large"); |
duke@1 | 626 | else |
jjg@1374 | 627 | t = F.at(pos).Literal(TypeTag.FLOAT, n); |
duke@1 | 628 | break; |
duke@1 | 629 | } |
duke@1 | 630 | case DOUBLELITERAL: { |
mcimadamore@1113 | 631 | String proper = token.radix() == 16 ? |
mcimadamore@1113 | 632 | ("0x"+ token.stringVal()) : |
mcimadamore@1113 | 633 | token.stringVal(); |
duke@1 | 634 | Double n; |
duke@1 | 635 | try { |
duke@1 | 636 | n = Double.valueOf(proper); |
duke@1 | 637 | } catch (NumberFormatException ex) { |
duke@1 | 638 | // error already reported in scanner |
duke@1 | 639 | n = Double.NaN; |
duke@1 | 640 | } |
duke@1 | 641 | if (n.doubleValue() == 0.0d && !isZero(proper)) |
mcimadamore@1113 | 642 | error(token.pos, "fp.number.too.small"); |
duke@1 | 643 | else if (n.doubleValue() == Double.POSITIVE_INFINITY) |
mcimadamore@1113 | 644 | error(token.pos, "fp.number.too.large"); |
duke@1 | 645 | else |
jjg@1374 | 646 | t = F.at(pos).Literal(TypeTag.DOUBLE, n); |
duke@1 | 647 | break; |
duke@1 | 648 | } |
duke@1 | 649 | case CHARLITERAL: |
duke@1 | 650 | t = F.at(pos).Literal( |
jjg@1374 | 651 | TypeTag.CHAR, |
mcimadamore@1113 | 652 | token.stringVal().charAt(0) + 0); |
duke@1 | 653 | break; |
duke@1 | 654 | case STRINGLITERAL: |
duke@1 | 655 | t = F.at(pos).Literal( |
jjg@1374 | 656 | TypeTag.CLASS, |
mcimadamore@1113 | 657 | token.stringVal()); |
duke@1 | 658 | break; |
duke@1 | 659 | case TRUE: case FALSE: |
duke@1 | 660 | t = F.at(pos).Literal( |
jjg@1374 | 661 | TypeTag.BOOLEAN, |
mcimadamore@1113 | 662 | (token.kind == TRUE ? 1 : 0)); |
duke@1 | 663 | break; |
duke@1 | 664 | case NULL: |
duke@1 | 665 | t = F.at(pos).Literal( |
jjg@1374 | 666 | TypeTag.BOT, |
duke@1 | 667 | null); |
duke@1 | 668 | break; |
duke@1 | 669 | default: |
jjg@816 | 670 | Assert.error(); |
duke@1 | 671 | } |
duke@1 | 672 | if (t == errorTree) |
duke@1 | 673 | t = F.at(pos).Erroneous(); |
mcimadamore@1113 | 674 | storeEnd(t, token.endPos); |
mcimadamore@1113 | 675 | nextToken(); |
duke@1 | 676 | return t; |
duke@1 | 677 | } |
duke@1 | 678 | //where |
duke@1 | 679 | boolean isZero(String s) { |
duke@1 | 680 | char[] cs = s.toCharArray(); |
jjg@408 | 681 | int base = ((cs.length > 1 && Character.toLowerCase(cs[1]) == 'x') ? 16 : 10); |
duke@1 | 682 | int i = ((base==16) ? 2 : 0); |
duke@1 | 683 | while (i < cs.length && (cs[i] == '0' || cs[i] == '.')) i++; |
duke@1 | 684 | return !(i < cs.length && (Character.digit(cs[i], base) > 0)); |
duke@1 | 685 | } |
duke@1 | 686 | |
duke@1 | 687 | String strval(Name prefix) { |
mcimadamore@1113 | 688 | String s = token.stringVal(); |
jjg@113 | 689 | return prefix.isEmpty() ? s : prefix + s; |
duke@1 | 690 | } |
duke@1 | 691 | |
duke@1 | 692 | /** terms can be either expressions or types. |
duke@1 | 693 | */ |
jjg@111 | 694 | public JCExpression parseExpression() { |
duke@1 | 695 | return term(EXPR); |
duke@1 | 696 | } |
duke@1 | 697 | |
jjg@111 | 698 | public JCExpression parseType() { |
duke@1 | 699 | return term(TYPE); |
duke@1 | 700 | } |
duke@1 | 701 | |
duke@1 | 702 | JCExpression term(int newmode) { |
duke@1 | 703 | int prevmode = mode; |
duke@1 | 704 | mode = newmode; |
duke@1 | 705 | JCExpression t = term(); |
duke@1 | 706 | lastmode = mode; |
duke@1 | 707 | mode = prevmode; |
duke@1 | 708 | return t; |
duke@1 | 709 | } |
duke@1 | 710 | |
duke@1 | 711 | /** |
jjg@1326 | 712 | * {@literal |
duke@1 | 713 | * Expression = Expression1 [ExpressionRest] |
duke@1 | 714 | * ExpressionRest = [AssignmentOperator Expression1] |
duke@1 | 715 | * AssignmentOperator = "=" | "+=" | "-=" | "*=" | "/=" | |
duke@1 | 716 | * "&=" | "|=" | "^=" | |
duke@1 | 717 | * "%=" | "<<=" | ">>=" | ">>>=" |
duke@1 | 718 | * Type = Type1 |
duke@1 | 719 | * TypeNoParams = TypeNoParams1 |
duke@1 | 720 | * StatementExpression = Expression |
duke@1 | 721 | * ConstantExpression = Expression |
jjg@1326 | 722 | * } |
duke@1 | 723 | */ |
duke@1 | 724 | JCExpression term() { |
duke@1 | 725 | JCExpression t = term1(); |
duke@1 | 726 | if ((mode & EXPR) != 0 && |
mcimadamore@1113 | 727 | token.kind == EQ || PLUSEQ.compareTo(token.kind) <= 0 && token.kind.compareTo(GTGTGTEQ) <= 0) |
duke@1 | 728 | return termRest(t); |
duke@1 | 729 | else |
duke@1 | 730 | return t; |
duke@1 | 731 | } |
duke@1 | 732 | |
duke@1 | 733 | JCExpression termRest(JCExpression t) { |
mcimadamore@1113 | 734 | switch (token.kind) { |
duke@1 | 735 | case EQ: { |
mcimadamore@1113 | 736 | int pos = token.pos; |
mcimadamore@1113 | 737 | nextToken(); |
duke@1 | 738 | mode = EXPR; |
duke@1 | 739 | JCExpression t1 = term(); |
duke@1 | 740 | return toP(F.at(pos).Assign(t, t1)); |
duke@1 | 741 | } |
duke@1 | 742 | case PLUSEQ: |
duke@1 | 743 | case SUBEQ: |
duke@1 | 744 | case STAREQ: |
duke@1 | 745 | case SLASHEQ: |
duke@1 | 746 | case PERCENTEQ: |
duke@1 | 747 | case AMPEQ: |
duke@1 | 748 | case BAREQ: |
duke@1 | 749 | case CARETEQ: |
duke@1 | 750 | case LTLTEQ: |
duke@1 | 751 | case GTGTEQ: |
duke@1 | 752 | case GTGTGTEQ: |
mcimadamore@1113 | 753 | int pos = token.pos; |
mcimadamore@1113 | 754 | TokenKind tk = token.kind; |
mcimadamore@1113 | 755 | nextToken(); |
duke@1 | 756 | mode = EXPR; |
duke@1 | 757 | JCExpression t1 = term(); |
mcimadamore@1113 | 758 | return F.at(pos).Assignop(optag(tk), t, t1); |
duke@1 | 759 | default: |
duke@1 | 760 | return t; |
duke@1 | 761 | } |
duke@1 | 762 | } |
duke@1 | 763 | |
duke@1 | 764 | /** Expression1 = Expression2 [Expression1Rest] |
duke@1 | 765 | * Type1 = Type2 |
duke@1 | 766 | * TypeNoParams1 = TypeNoParams2 |
duke@1 | 767 | */ |
duke@1 | 768 | JCExpression term1() { |
duke@1 | 769 | JCExpression t = term2(); |
mcimadamore@1113 | 770 | if ((mode & EXPR) != 0 && token.kind == QUES) { |
duke@1 | 771 | mode = EXPR; |
duke@1 | 772 | return term1Rest(t); |
duke@1 | 773 | } else { |
duke@1 | 774 | return t; |
duke@1 | 775 | } |
duke@1 | 776 | } |
duke@1 | 777 | |
duke@1 | 778 | /** Expression1Rest = ["?" Expression ":" Expression1] |
duke@1 | 779 | */ |
duke@1 | 780 | JCExpression term1Rest(JCExpression t) { |
mcimadamore@1113 | 781 | if (token.kind == QUES) { |
mcimadamore@1113 | 782 | int pos = token.pos; |
mcimadamore@1113 | 783 | nextToken(); |
duke@1 | 784 | JCExpression t1 = term(); |
duke@1 | 785 | accept(COLON); |
duke@1 | 786 | JCExpression t2 = term1(); |
duke@1 | 787 | return F.at(pos).Conditional(t, t1, t2); |
duke@1 | 788 | } else { |
duke@1 | 789 | return t; |
duke@1 | 790 | } |
duke@1 | 791 | } |
duke@1 | 792 | |
duke@1 | 793 | /** Expression2 = Expression3 [Expression2Rest] |
duke@1 | 794 | * Type2 = Type3 |
duke@1 | 795 | * TypeNoParams2 = TypeNoParams3 |
duke@1 | 796 | */ |
duke@1 | 797 | JCExpression term2() { |
duke@1 | 798 | JCExpression t = term3(); |
mcimadamore@1113 | 799 | if ((mode & EXPR) != 0 && prec(token.kind) >= TreeInfo.orPrec) { |
duke@1 | 800 | mode = EXPR; |
duke@1 | 801 | return term2Rest(t, TreeInfo.orPrec); |
duke@1 | 802 | } else { |
duke@1 | 803 | return t; |
duke@1 | 804 | } |
duke@1 | 805 | } |
duke@1 | 806 | |
duke@1 | 807 | /* Expression2Rest = {infixop Expression3} |
duke@1 | 808 | * | Expression3 instanceof Type |
duke@1 | 809 | * infixop = "||" |
duke@1 | 810 | * | "&&" |
duke@1 | 811 | * | "|" |
duke@1 | 812 | * | "^" |
duke@1 | 813 | * | "&" |
duke@1 | 814 | * | "==" | "!=" |
duke@1 | 815 | * | "<" | ">" | "<=" | ">=" |
duke@1 | 816 | * | "<<" | ">>" | ">>>" |
duke@1 | 817 | * | "+" | "-" |
duke@1 | 818 | * | "*" | "/" | "%" |
duke@1 | 819 | */ |
duke@1 | 820 | JCExpression term2Rest(JCExpression t, int minprec) { |
duke@1 | 821 | JCExpression[] odStack = newOdStack(); |
duke@1 | 822 | Token[] opStack = newOpStack(); |
mcimadamore@1113 | 823 | |
duke@1 | 824 | // optimization, was odStack = new Tree[...]; opStack = new Tree[...]; |
duke@1 | 825 | int top = 0; |
duke@1 | 826 | odStack[0] = t; |
mcimadamore@1113 | 827 | int startPos = token.pos; |
mcimadamore@1113 | 828 | Token topOp = Tokens.DUMMY; |
mcimadamore@1113 | 829 | while (prec(token.kind) >= minprec) { |
duke@1 | 830 | opStack[top] = topOp; |
duke@1 | 831 | top++; |
mcimadamore@1113 | 832 | topOp = token; |
mcimadamore@1113 | 833 | nextToken(); |
mcimadamore@1165 | 834 | odStack[top] = (topOp.kind == INSTANCEOF) ? parseType() : term3(); |
mcimadamore@1113 | 835 | while (top > 0 && prec(topOp.kind) >= prec(token.kind)) { |
mcimadamore@1113 | 836 | odStack[top-1] = makeOp(topOp.pos, topOp.kind, odStack[top-1], |
duke@1 | 837 | odStack[top]); |
duke@1 | 838 | top--; |
duke@1 | 839 | topOp = opStack[top]; |
duke@1 | 840 | } |
duke@1 | 841 | } |
jjg@816 | 842 | Assert.check(top == 0); |
duke@1 | 843 | t = odStack[0]; |
duke@1 | 844 | |
jjg@1127 | 845 | if (t.hasTag(JCTree.Tag.PLUS)) { |
jjg@1362 | 846 | StringBuilder buf = foldStrings(t); |
duke@1 | 847 | if (buf != null) { |
jjg@1374 | 848 | t = toP(F.at(startPos).Literal(TypeTag.CLASS, buf.toString())); |
duke@1 | 849 | } |
duke@1 | 850 | } |
duke@1 | 851 | |
jlahoda@1444 | 852 | odStackSupply.add(odStack); |
jlahoda@1444 | 853 | opStackSupply.add(opStack); |
duke@1 | 854 | return t; |
duke@1 | 855 | } |
duke@1 | 856 | //where |
duke@1 | 857 | /** Construct a binary or type test node. |
duke@1 | 858 | */ |
duke@1 | 859 | private JCExpression makeOp(int pos, |
mcimadamore@1113 | 860 | TokenKind topOp, |
duke@1 | 861 | JCExpression od1, |
duke@1 | 862 | JCExpression od2) |
duke@1 | 863 | { |
duke@1 | 864 | if (topOp == INSTANCEOF) { |
duke@1 | 865 | return F.at(pos).TypeTest(od1, od2); |
duke@1 | 866 | } else { |
duke@1 | 867 | return F.at(pos).Binary(optag(topOp), od1, od2); |
duke@1 | 868 | } |
duke@1 | 869 | } |
duke@1 | 870 | /** If tree is a concatenation of string literals, replace it |
duke@1 | 871 | * by a single literal representing the concatenated string. |
duke@1 | 872 | */ |
jjg@1362 | 873 | protected StringBuilder foldStrings(JCTree tree) { |
ksrini@1062 | 874 | if (!allowStringFolding) |
ksrini@1062 | 875 | return null; |
duke@1 | 876 | List<String> buf = List.nil(); |
duke@1 | 877 | while (true) { |
jjg@1127 | 878 | if (tree.hasTag(LITERAL)) { |
duke@1 | 879 | JCLiteral lit = (JCLiteral) tree; |
jjg@1374 | 880 | if (lit.typetag == TypeTag.CLASS) { |
jjg@1362 | 881 | StringBuilder sbuf = |
jjg@1362 | 882 | new StringBuilder((String)lit.value); |
duke@1 | 883 | while (buf.nonEmpty()) { |
duke@1 | 884 | sbuf.append(buf.head); |
duke@1 | 885 | buf = buf.tail; |
duke@1 | 886 | } |
duke@1 | 887 | return sbuf; |
duke@1 | 888 | } |
jjg@1127 | 889 | } else if (tree.hasTag(JCTree.Tag.PLUS)) { |
duke@1 | 890 | JCBinary op = (JCBinary)tree; |
jjg@1127 | 891 | if (op.rhs.hasTag(LITERAL)) { |
duke@1 | 892 | JCLiteral lit = (JCLiteral) op.rhs; |
jjg@1374 | 893 | if (lit.typetag == TypeTag.CLASS) { |
duke@1 | 894 | buf = buf.prepend((String) lit.value); |
duke@1 | 895 | tree = op.lhs; |
duke@1 | 896 | continue; |
duke@1 | 897 | } |
duke@1 | 898 | } |
duke@1 | 899 | } |
duke@1 | 900 | return null; |
duke@1 | 901 | } |
duke@1 | 902 | } |
duke@1 | 903 | |
duke@1 | 904 | /** optimization: To save allocating a new operand/operator stack |
duke@1 | 905 | * for every binary operation, we use supplys. |
duke@1 | 906 | */ |
jlahoda@1444 | 907 | ArrayList<JCExpression[]> odStackSupply = new ArrayList<JCExpression[]>(); |
jlahoda@1444 | 908 | ArrayList<Token[]> opStackSupply = new ArrayList<Token[]>(); |
duke@1 | 909 | |
duke@1 | 910 | private JCExpression[] newOdStack() { |
jlahoda@1444 | 911 | if (odStackSupply.isEmpty()) |
jlahoda@1444 | 912 | return new JCExpression[infixPrecedenceLevels + 1]; |
jlahoda@1444 | 913 | return odStackSupply.remove(odStackSupply.size() - 1); |
duke@1 | 914 | } |
duke@1 | 915 | |
duke@1 | 916 | private Token[] newOpStack() { |
jlahoda@1444 | 917 | if (opStackSupply.isEmpty()) |
jlahoda@1444 | 918 | return new Token[infixPrecedenceLevels + 1]; |
jlahoda@1444 | 919 | return opStackSupply.remove(opStackSupply.size() - 1); |
duke@1 | 920 | } |
duke@1 | 921 | |
jjg@1326 | 922 | /** |
jjg@1326 | 923 | * Expression3 = PrefixOp Expression3 |
duke@1 | 924 | * | "(" Expr | TypeNoParams ")" Expression3 |
duke@1 | 925 | * | Primary {Selector} {PostfixOp} |
jjg@1326 | 926 | * |
jjg@1326 | 927 | * {@literal |
duke@1 | 928 | * Primary = "(" Expression ")" |
duke@1 | 929 | * | Literal |
duke@1 | 930 | * | [TypeArguments] THIS [Arguments] |
duke@1 | 931 | * | [TypeArguments] SUPER SuperSuffix |
duke@1 | 932 | * | NEW [TypeArguments] Creator |
mcimadamore@1144 | 933 | * | "(" Arguments ")" "->" ( Expression | Block ) |
mcimadamore@1144 | 934 | * | Ident "->" ( Expression | Block ) |
jjg@722 | 935 | * | Ident { "." Ident } |
mcimadamore@1145 | 936 | * | Expression3 MemberReferenceSuffix |
jjg@722 | 937 | * [ "[" ( "]" BracketsOpt "." CLASS | Expression "]" ) |
duke@1 | 938 | * | Arguments |
duke@1 | 939 | * | "." ( CLASS | THIS | [TypeArguments] SUPER Arguments | NEW [TypeArguments] InnerCreator ) |
duke@1 | 940 | * ] |
duke@1 | 941 | * | BasicType BracketsOpt "." CLASS |
jjg@1326 | 942 | * } |
jjg@1326 | 943 | * |
duke@1 | 944 | * PrefixOp = "++" | "--" | "!" | "~" | "+" | "-" |
duke@1 | 945 | * PostfixOp = "++" | "--" |
duke@1 | 946 | * Type3 = Ident { "." Ident } [TypeArguments] {TypeSelector} BracketsOpt |
duke@1 | 947 | * | BasicType |
duke@1 | 948 | * TypeNoParams3 = Ident { "." Ident } BracketsOpt |
duke@1 | 949 | * Selector = "." [TypeArguments] Ident [Arguments] |
duke@1 | 950 | * | "." THIS |
duke@1 | 951 | * | "." [TypeArguments] SUPER SuperSuffix |
duke@1 | 952 | * | "." NEW [TypeArguments] InnerCreator |
duke@1 | 953 | * | "[" Expression "]" |
duke@1 | 954 | * TypeSelector = "." Ident [TypeArguments] |
duke@1 | 955 | * SuperSuffix = Arguments | "." Ident [Arguments] |
duke@1 | 956 | */ |
duke@1 | 957 | protected JCExpression term3() { |
mcimadamore@1113 | 958 | int pos = token.pos; |
duke@1 | 959 | JCExpression t; |
duke@1 | 960 | List<JCExpression> typeArgs = typeArgumentsOpt(EXPR); |
mcimadamore@1113 | 961 | switch (token.kind) { |
duke@1 | 962 | case QUES: |
duke@1 | 963 | if ((mode & TYPE) != 0 && (mode & (TYPEARG|NOPARAMS)) == TYPEARG) { |
duke@1 | 964 | mode = TYPE; |
duke@1 | 965 | return typeArgument(); |
duke@1 | 966 | } else |
duke@1 | 967 | return illegal(); |
duke@1 | 968 | case PLUSPLUS: case SUBSUB: case BANG: case TILDE: case PLUS: case SUB: |
duke@1 | 969 | if (typeArgs == null && (mode & EXPR) != 0) { |
mcimadamore@1113 | 970 | TokenKind tk = token.kind; |
mcimadamore@1113 | 971 | nextToken(); |
duke@1 | 972 | mode = EXPR; |
mcimadamore@1113 | 973 | if (tk == SUB && |
mcimadamore@1113 | 974 | (token.kind == INTLITERAL || token.kind == LONGLITERAL) && |
mcimadamore@1113 | 975 | token.radix() == 10) { |
duke@1 | 976 | mode = EXPR; |
ksrini@1074 | 977 | t = literal(names.hyphen, pos); |
duke@1 | 978 | } else { |
mcimadamore@1165 | 979 | t = term3(); |
mcimadamore@1113 | 980 | return F.at(pos).Unary(unoptag(tk), t); |
duke@1 | 981 | } |
duke@1 | 982 | } else return illegal(); |
duke@1 | 983 | break; |
duke@1 | 984 | case LPAREN: |
duke@1 | 985 | if (typeArgs == null && (mode & EXPR) != 0) { |
mcimadamore@1436 | 986 | ParensResult pres = analyzeParens(); |
mcimadamore@1436 | 987 | switch (pres) { |
mcimadamore@1436 | 988 | case CAST: |
mcimadamore@1436 | 989 | accept(LPAREN); |
mcimadamore@1436 | 990 | mode = TYPE; |
mcimadamore@1436 | 991 | int pos1 = pos; |
mcimadamore@1436 | 992 | List<JCExpression> targets = List.of(t = term3()); |
mcimadamore@1436 | 993 | while (token.kind == AMP) { |
mcimadamore@1436 | 994 | checkIntersectionTypesInCast(); |
mcimadamore@1436 | 995 | accept(AMP); |
mcimadamore@1436 | 996 | targets = targets.prepend(term3()); |
mcimadamore@1436 | 997 | } |
mcimadamore@1436 | 998 | if (targets.length() > 1) { |
mcimadamore@1436 | 999 | t = toP(F.at(pos1).TypeIntersection(targets.reverse())); |
mcimadamore@1436 | 1000 | } |
mcimadamore@1436 | 1001 | accept(RPAREN); |
mcimadamore@1436 | 1002 | mode = EXPR; |
mcimadamore@1436 | 1003 | JCExpression t1 = term3(); |
mcimadamore@1436 | 1004 | return F.at(pos).TypeCast(t, t1); |
mcimadamore@1436 | 1005 | case IMPLICIT_LAMBDA: |
mcimadamore@1436 | 1006 | case EXPLICIT_LAMBDA: |
mcimadamore@1436 | 1007 | t = lambdaExpressionOrStatement(true, pres == ParensResult.EXPLICIT_LAMBDA, pos); |
mcimadamore@1436 | 1008 | break; |
mcimadamore@1436 | 1009 | default: //PARENS |
mcimadamore@1436 | 1010 | accept(LPAREN); |
mcimadamore@1144 | 1011 | mode = EXPR; |
mcimadamore@1436 | 1012 | t = termRest(term1Rest(term2Rest(term3(), TreeInfo.orPrec))); |
mcimadamore@1436 | 1013 | accept(RPAREN); |
mcimadamore@1436 | 1014 | t = toP(F.at(pos).Parens(t)); |
mcimadamore@1144 | 1015 | break; |
duke@1 | 1016 | } |
mcimadamore@1144 | 1017 | } else { |
mcimadamore@1144 | 1018 | return illegal(); |
mcimadamore@1144 | 1019 | } |
duke@1 | 1020 | break; |
duke@1 | 1021 | case THIS: |
duke@1 | 1022 | if ((mode & EXPR) != 0) { |
duke@1 | 1023 | mode = EXPR; |
duke@1 | 1024 | t = to(F.at(pos).Ident(names._this)); |
mcimadamore@1113 | 1025 | nextToken(); |
duke@1 | 1026 | if (typeArgs == null) |
duke@1 | 1027 | t = argumentsOpt(null, t); |
duke@1 | 1028 | else |
duke@1 | 1029 | t = arguments(typeArgs, t); |
duke@1 | 1030 | typeArgs = null; |
duke@1 | 1031 | } else return illegal(); |
duke@1 | 1032 | break; |
duke@1 | 1033 | case SUPER: |
duke@1 | 1034 | if ((mode & EXPR) != 0) { |
duke@1 | 1035 | mode = EXPR; |
jjg@482 | 1036 | t = to(F.at(pos).Ident(names._super)); |
jjg@482 | 1037 | t = superSuffix(typeArgs, t); |
duke@1 | 1038 | typeArgs = null; |
duke@1 | 1039 | } else return illegal(); |
duke@1 | 1040 | break; |
duke@1 | 1041 | case INTLITERAL: case LONGLITERAL: case FLOATLITERAL: case DOUBLELITERAL: |
duke@1 | 1042 | case CHARLITERAL: case STRINGLITERAL: |
duke@1 | 1043 | case TRUE: case FALSE: case NULL: |
duke@1 | 1044 | if (typeArgs == null && (mode & EXPR) != 0) { |
duke@1 | 1045 | mode = EXPR; |
duke@1 | 1046 | t = literal(names.empty); |
duke@1 | 1047 | } else return illegal(); |
duke@1 | 1048 | break; |
duke@1 | 1049 | case NEW: |
duke@1 | 1050 | if (typeArgs != null) return illegal(); |
duke@1 | 1051 | if ((mode & EXPR) != 0) { |
duke@1 | 1052 | mode = EXPR; |
mcimadamore@1113 | 1053 | nextToken(); |
mcimadamore@1113 | 1054 | if (token.kind == LT) typeArgs = typeArguments(false); |
duke@1 | 1055 | t = creator(pos, typeArgs); |
duke@1 | 1056 | typeArgs = null; |
duke@1 | 1057 | } else return illegal(); |
duke@1 | 1058 | break; |
duke@1 | 1059 | case IDENTIFIER: case ASSERT: case ENUM: |
duke@1 | 1060 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1061 | if ((mode & EXPR) != 0 && peekToken(ARROW)) { |
mcimadamore@1144 | 1062 | t = lambdaExpressionOrStatement(false, false, pos); |
mcimadamore@1144 | 1063 | } else { |
mcimadamore@1144 | 1064 | t = toP(F.at(token.pos).Ident(ident())); |
mcimadamore@1144 | 1065 | loop: while (true) { |
mcimadamore@1144 | 1066 | pos = token.pos; |
mcimadamore@1144 | 1067 | switch (token.kind) { |
mcimadamore@1144 | 1068 | case LBRACKET: |
mcimadamore@1113 | 1069 | nextToken(); |
mcimadamore@1144 | 1070 | if (token.kind == RBRACKET) { |
mcimadamore@1144 | 1071 | nextToken(); |
mcimadamore@1144 | 1072 | t = bracketsOpt(t); |
mcimadamore@1144 | 1073 | t = toP(F.at(pos).TypeArray(t)); |
mcimadamore@1144 | 1074 | t = bracketsSuffix(t); |
mcimadamore@1144 | 1075 | } else { |
mcimadamore@1144 | 1076 | if ((mode & EXPR) != 0) { |
mcimadamore@1144 | 1077 | mode = EXPR; |
mcimadamore@1144 | 1078 | JCExpression t1 = term(); |
mcimadamore@1144 | 1079 | t = to(F.at(pos).Indexed(t, t1)); |
mcimadamore@1144 | 1080 | } |
mcimadamore@1144 | 1081 | accept(RBRACKET); |
mcimadamore@1144 | 1082 | } |
mcimadamore@1144 | 1083 | break loop; |
mcimadamore@1144 | 1084 | case LPAREN: |
duke@1 | 1085 | if ((mode & EXPR) != 0) { |
duke@1 | 1086 | mode = EXPR; |
mcimadamore@1144 | 1087 | t = arguments(typeArgs, t); |
mcimadamore@1144 | 1088 | typeArgs = null; |
duke@1 | 1089 | } |
mcimadamore@1144 | 1090 | break loop; |
mcimadamore@1144 | 1091 | case DOT: |
mcimadamore@1144 | 1092 | nextToken(); |
mcimadamore@1144 | 1093 | int oldmode = mode; |
mcimadamore@1144 | 1094 | mode &= ~NOPARAMS; |
mcimadamore@1144 | 1095 | typeArgs = typeArgumentsOpt(EXPR); |
mcimadamore@1144 | 1096 | mode = oldmode; |
mcimadamore@1144 | 1097 | if ((mode & EXPR) != 0) { |
mcimadamore@1144 | 1098 | switch (token.kind) { |
mcimadamore@1144 | 1099 | case CLASS: |
mcimadamore@1144 | 1100 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1101 | mode = EXPR; |
mcimadamore@1144 | 1102 | t = to(F.at(pos).Select(t, names._class)); |
mcimadamore@1144 | 1103 | nextToken(); |
mcimadamore@1144 | 1104 | break loop; |
mcimadamore@1144 | 1105 | case THIS: |
mcimadamore@1144 | 1106 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1107 | mode = EXPR; |
mcimadamore@1144 | 1108 | t = to(F.at(pos).Select(t, names._this)); |
mcimadamore@1144 | 1109 | nextToken(); |
mcimadamore@1144 | 1110 | break loop; |
mcimadamore@1144 | 1111 | case SUPER: |
mcimadamore@1144 | 1112 | mode = EXPR; |
mcimadamore@1144 | 1113 | t = to(F.at(pos).Select(t, names._super)); |
mcimadamore@1144 | 1114 | t = superSuffix(typeArgs, t); |
mcimadamore@1144 | 1115 | typeArgs = null; |
mcimadamore@1144 | 1116 | break loop; |
mcimadamore@1144 | 1117 | case NEW: |
mcimadamore@1144 | 1118 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1119 | mode = EXPR; |
mcimadamore@1144 | 1120 | int pos1 = token.pos; |
mcimadamore@1144 | 1121 | nextToken(); |
mcimadamore@1144 | 1122 | if (token.kind == LT) typeArgs = typeArguments(false); |
mcimadamore@1144 | 1123 | t = innerCreator(pos1, typeArgs, t); |
mcimadamore@1144 | 1124 | typeArgs = null; |
mcimadamore@1144 | 1125 | break loop; |
mcimadamore@1144 | 1126 | } |
mcimadamore@1144 | 1127 | } |
mcimadamore@1144 | 1128 | // typeArgs saved for next loop iteration. |
mcimadamore@1144 | 1129 | t = toP(F.at(pos).Select(t, ident())); |
mcimadamore@1144 | 1130 | break; |
mcimadamore@1165 | 1131 | case LT: |
mcimadamore@1165 | 1132 | if ((mode & TYPE) == 0 && isUnboundMemberRef()) { |
mcimadamore@1165 | 1133 | //this is an unbound method reference whose qualifier |
mcimadamore@1352 | 1134 | //is a generic type i.e. A<S>::m |
mcimadamore@1165 | 1135 | int pos1 = token.pos; |
mcimadamore@1165 | 1136 | accept(LT); |
mcimadamore@1165 | 1137 | ListBuffer<JCExpression> args = new ListBuffer<JCExpression>(); |
mcimadamore@1165 | 1138 | args.append(typeArgument()); |
mcimadamore@1165 | 1139 | while (token.kind == COMMA) { |
mcimadamore@1165 | 1140 | nextToken(); |
mcimadamore@1165 | 1141 | args.append(typeArgument()); |
mcimadamore@1165 | 1142 | } |
mcimadamore@1165 | 1143 | accept(GT); |
mcimadamore@1165 | 1144 | t = toP(F.at(pos1).TypeApply(t, args.toList())); |
mcimadamore@1165 | 1145 | checkGenerics(); |
mcimadamore@1165 | 1146 | while (token.kind == DOT) { |
mcimadamore@1165 | 1147 | nextToken(); |
mcimadamore@1165 | 1148 | mode = TYPE; |
mcimadamore@1165 | 1149 | t = toP(F.at(token.pos).Select(t, ident())); |
mcimadamore@1165 | 1150 | t = typeArgumentsOpt(t); |
mcimadamore@1165 | 1151 | } |
mcimadamore@1352 | 1152 | t = bracketsOpt(t); |
mcimadamore@1352 | 1153 | if (token.kind != COLCOL) { |
mcimadamore@1165 | 1154 | //method reference expected here |
mcimadamore@1165 | 1155 | t = illegal(); |
mcimadamore@1165 | 1156 | } |
mcimadamore@1165 | 1157 | mode = EXPR; |
mcimadamore@1165 | 1158 | return term3Rest(t, typeArgs); |
mcimadamore@1165 | 1159 | } |
mcimadamore@1165 | 1160 | break loop; |
mcimadamore@1144 | 1161 | default: |
mcimadamore@1144 | 1162 | break loop; |
duke@1 | 1163 | } |
duke@1 | 1164 | } |
duke@1 | 1165 | } |
duke@1 | 1166 | if (typeArgs != null) illegal(); |
duke@1 | 1167 | t = typeArgumentsOpt(t); |
duke@1 | 1168 | break; |
duke@1 | 1169 | case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT: |
duke@1 | 1170 | case DOUBLE: case BOOLEAN: |
duke@1 | 1171 | if (typeArgs != null) illegal(); |
duke@1 | 1172 | t = bracketsSuffix(bracketsOpt(basicType())); |
duke@1 | 1173 | break; |
duke@1 | 1174 | case VOID: |
duke@1 | 1175 | if (typeArgs != null) illegal(); |
duke@1 | 1176 | if ((mode & EXPR) != 0) { |
mcimadamore@1113 | 1177 | nextToken(); |
mcimadamore@1113 | 1178 | if (token.kind == DOT) { |
jjg@1374 | 1179 | JCPrimitiveTypeTree ti = toP(F.at(pos).TypeIdent(TypeTag.VOID)); |
duke@1 | 1180 | t = bracketsSuffix(ti); |
duke@1 | 1181 | } else { |
duke@1 | 1182 | return illegal(pos); |
duke@1 | 1183 | } |
duke@1 | 1184 | } else { |
jrose@267 | 1185 | // Support the corner case of myMethodHandle.<void>invoke() by passing |
jrose@267 | 1186 | // a void type (like other primitive types) to the next phase. |
jrose@267 | 1187 | // The error will be reported in Attr.attribTypes or Attr.visitApply. |
jjg@1374 | 1188 | JCPrimitiveTypeTree ti = to(F.at(pos).TypeIdent(TypeTag.VOID)); |
mcimadamore@1113 | 1189 | nextToken(); |
jrose@267 | 1190 | return ti; |
jrose@267 | 1191 | //return illegal(); |
duke@1 | 1192 | } |
duke@1 | 1193 | break; |
duke@1 | 1194 | default: |
duke@1 | 1195 | return illegal(); |
duke@1 | 1196 | } |
mcimadamore@1144 | 1197 | return term3Rest(t, typeArgs); |
mcimadamore@1144 | 1198 | } |
mcimadamore@1144 | 1199 | |
mcimadamore@1144 | 1200 | JCExpression term3Rest(JCExpression t, List<JCExpression> typeArgs) { |
duke@1 | 1201 | if (typeArgs != null) illegal(); |
duke@1 | 1202 | while (true) { |
mcimadamore@1113 | 1203 | int pos1 = token.pos; |
mcimadamore@1113 | 1204 | if (token.kind == LBRACKET) { |
mcimadamore@1113 | 1205 | nextToken(); |
duke@1 | 1206 | if ((mode & TYPE) != 0) { |
duke@1 | 1207 | int oldmode = mode; |
duke@1 | 1208 | mode = TYPE; |
mcimadamore@1113 | 1209 | if (token.kind == RBRACKET) { |
mcimadamore@1113 | 1210 | nextToken(); |
jjg@722 | 1211 | t = bracketsOpt(t); |
duke@1 | 1212 | t = toP(F.at(pos1).TypeArray(t)); |
mcimadamore@1352 | 1213 | if (token.kind == COLCOL) { |
mcimadamore@1352 | 1214 | mode = EXPR; |
mcimadamore@1352 | 1215 | continue; |
mcimadamore@1352 | 1216 | } |
duke@1 | 1217 | return t; |
duke@1 | 1218 | } |
duke@1 | 1219 | mode = oldmode; |
duke@1 | 1220 | } |
duke@1 | 1221 | if ((mode & EXPR) != 0) { |
duke@1 | 1222 | mode = EXPR; |
duke@1 | 1223 | JCExpression t1 = term(); |
duke@1 | 1224 | t = to(F.at(pos1).Indexed(t, t1)); |
duke@1 | 1225 | } |
duke@1 | 1226 | accept(RBRACKET); |
mcimadamore@1113 | 1227 | } else if (token.kind == DOT) { |
mcimadamore@1113 | 1228 | nextToken(); |
duke@1 | 1229 | typeArgs = typeArgumentsOpt(EXPR); |
mcimadamore@1113 | 1230 | if (token.kind == SUPER && (mode & EXPR) != 0) { |
duke@1 | 1231 | mode = EXPR; |
duke@1 | 1232 | t = to(F.at(pos1).Select(t, names._super)); |
mcimadamore@1113 | 1233 | nextToken(); |
duke@1 | 1234 | t = arguments(typeArgs, t); |
duke@1 | 1235 | typeArgs = null; |
mcimadamore@1113 | 1236 | } else if (token.kind == NEW && (mode & EXPR) != 0) { |
duke@1 | 1237 | if (typeArgs != null) return illegal(); |
duke@1 | 1238 | mode = EXPR; |
mcimadamore@1113 | 1239 | int pos2 = token.pos; |
mcimadamore@1113 | 1240 | nextToken(); |
mcimadamore@1113 | 1241 | if (token.kind == LT) typeArgs = typeArguments(false); |
duke@1 | 1242 | t = innerCreator(pos2, typeArgs, t); |
duke@1 | 1243 | typeArgs = null; |
duke@1 | 1244 | } else { |
duke@1 | 1245 | t = toP(F.at(pos1).Select(t, ident())); |
duke@1 | 1246 | t = argumentsOpt(typeArgs, typeArgumentsOpt(t)); |
duke@1 | 1247 | typeArgs = null; |
duke@1 | 1248 | } |
mcimadamore@1352 | 1249 | } else if ((mode & EXPR) != 0 && token.kind == COLCOL) { |
mcimadamore@1145 | 1250 | mode = EXPR; |
mcimadamore@1145 | 1251 | if (typeArgs != null) return illegal(); |
mcimadamore@1352 | 1252 | accept(COLCOL); |
mcimadamore@1145 | 1253 | t = memberReferenceSuffix(pos1, t); |
duke@1 | 1254 | } else { |
duke@1 | 1255 | break; |
duke@1 | 1256 | } |
duke@1 | 1257 | } |
mcimadamore@1113 | 1258 | while ((token.kind == PLUSPLUS || token.kind == SUBSUB) && (mode & EXPR) != 0) { |
duke@1 | 1259 | mode = EXPR; |
mcimadamore@1113 | 1260 | t = to(F.at(token.pos).Unary( |
jjg@1127 | 1261 | token.kind == PLUSPLUS ? POSTINC : POSTDEC, t)); |
mcimadamore@1113 | 1262 | nextToken(); |
duke@1 | 1263 | } |
duke@1 | 1264 | return toP(t); |
duke@1 | 1265 | } |
duke@1 | 1266 | |
mcimadamore@1165 | 1267 | /** |
mcimadamore@1165 | 1268 | * If we see an identifier followed by a '<' it could be an unbound |
mcimadamore@1165 | 1269 | * method reference or a binary expression. To disambiguate, look for a |
mcimadamore@1165 | 1270 | * matching '>' and see if the subsequent terminal is either '.' or '#'. |
mcimadamore@1165 | 1271 | */ |
mcimadamore@1165 | 1272 | @SuppressWarnings("fallthrough") |
mcimadamore@1165 | 1273 | boolean isUnboundMemberRef() { |
mcimadamore@1165 | 1274 | int pos = 0, depth = 0; |
mcimadamore@1165 | 1275 | for (Token t = S.token(pos) ; ; t = S.token(++pos)) { |
mcimadamore@1165 | 1276 | switch (t.kind) { |
mcimadamore@1165 | 1277 | case IDENTIFIER: case QUES: case EXTENDS: case SUPER: |
mcimadamore@1165 | 1278 | case DOT: case RBRACKET: case LBRACKET: case COMMA: |
mcimadamore@1165 | 1279 | case BYTE: case SHORT: case INT: case LONG: case FLOAT: |
mcimadamore@1165 | 1280 | case DOUBLE: case BOOLEAN: case CHAR: |
mcimadamore@1165 | 1281 | break; |
mcimadamore@1165 | 1282 | case LT: |
mcimadamore@1165 | 1283 | depth++; break; |
mcimadamore@1165 | 1284 | case GTGTGT: |
mcimadamore@1165 | 1285 | depth--; |
mcimadamore@1165 | 1286 | case GTGT: |
mcimadamore@1165 | 1287 | depth--; |
mcimadamore@1165 | 1288 | case GT: |
mcimadamore@1165 | 1289 | depth--; |
mcimadamore@1165 | 1290 | if (depth == 0) { |
mcimadamore@1352 | 1291 | TokenKind nextKind = S.token(pos + 1).kind; |
mcimadamore@1165 | 1292 | return |
mcimadamore@1352 | 1293 | nextKind == TokenKind.DOT || |
mcimadamore@1352 | 1294 | nextKind == TokenKind.LBRACKET || |
mcimadamore@1352 | 1295 | nextKind == TokenKind.COLCOL; |
mcimadamore@1165 | 1296 | } |
mcimadamore@1165 | 1297 | break; |
mcimadamore@1165 | 1298 | default: |
mcimadamore@1165 | 1299 | return false; |
mcimadamore@1165 | 1300 | } |
mcimadamore@1165 | 1301 | } |
mcimadamore@1165 | 1302 | } |
mcimadamore@1165 | 1303 | |
mcimadamore@1436 | 1304 | /** |
mcimadamore@1436 | 1305 | * If we see an identifier followed by a '<' it could be an unbound |
mcimadamore@1436 | 1306 | * method reference or a binary expression. To disambiguate, look for a |
mcimadamore@1436 | 1307 | * matching '>' and see if the subsequent terminal is either '.' or '#'. |
mcimadamore@1436 | 1308 | */ |
mcimadamore@1436 | 1309 | @SuppressWarnings("fallthrough") |
mcimadamore@1436 | 1310 | ParensResult analyzeParens() { |
mcimadamore@1436 | 1311 | int depth = 0; |
mcimadamore@1436 | 1312 | boolean type = false; |
mcimadamore@1436 | 1313 | for (int lookahead = 0 ; ; lookahead++) { |
mcimadamore@1436 | 1314 | TokenKind tk = S.token(lookahead).kind; |
mcimadamore@1436 | 1315 | switch (tk) { |
mcimadamore@1436 | 1316 | case EXTENDS: case SUPER: case COMMA: |
mcimadamore@1436 | 1317 | type = true; |
mcimadamore@1436 | 1318 | case QUES: case DOT: case AMP: |
mcimadamore@1436 | 1319 | //skip |
mcimadamore@1436 | 1320 | break; |
mcimadamore@1436 | 1321 | case BYTE: case SHORT: case INT: case LONG: case FLOAT: |
mcimadamore@1436 | 1322 | case DOUBLE: case BOOLEAN: case CHAR: |
mcimadamore@1436 | 1323 | if (peekToken(lookahead, RPAREN)) { |
mcimadamore@1436 | 1324 | //Type, ')' -> cast |
mcimadamore@1436 | 1325 | return ParensResult.CAST; |
mcimadamore@1436 | 1326 | } else if (peekToken(lookahead, IDENTIFIER)) { |
mcimadamore@1436 | 1327 | //Type, 'Identifier -> explicit lambda |
mcimadamore@1436 | 1328 | return ParensResult.EXPLICIT_LAMBDA; |
mcimadamore@1436 | 1329 | } |
mcimadamore@1436 | 1330 | break; |
mcimadamore@1436 | 1331 | case LPAREN: |
mcimadamore@1436 | 1332 | if (lookahead != 0) { |
mcimadamore@1436 | 1333 | // '(' in a non-starting position -> parens |
mcimadamore@1436 | 1334 | return ParensResult.PARENS; |
mcimadamore@1436 | 1335 | } else if (peekToken(lookahead, RPAREN)) { |
mcimadamore@1436 | 1336 | // '(', ')' -> explicit lambda |
mcimadamore@1436 | 1337 | return ParensResult.EXPLICIT_LAMBDA; |
mcimadamore@1436 | 1338 | } |
mcimadamore@1436 | 1339 | break; |
mcimadamore@1436 | 1340 | case RPAREN: |
mcimadamore@1436 | 1341 | // if we have seen something that looks like a type, |
mcimadamore@1436 | 1342 | // then it's a cast expression |
mcimadamore@1436 | 1343 | if (type) return ParensResult.CAST; |
mcimadamore@1436 | 1344 | // otherwise, disambiguate cast vs. parenthesized expression |
mcimadamore@1436 | 1345 | // based on subsequent token. |
mcimadamore@1436 | 1346 | switch (S.token(lookahead + 1).kind) { |
mcimadamore@1436 | 1347 | /*case PLUSPLUS: case SUBSUB: */ |
mcimadamore@1436 | 1348 | case BANG: case TILDE: |
mcimadamore@1436 | 1349 | case LPAREN: case THIS: case SUPER: |
mcimadamore@1436 | 1350 | case INTLITERAL: case LONGLITERAL: case FLOATLITERAL: |
mcimadamore@1436 | 1351 | case DOUBLELITERAL: case CHARLITERAL: case STRINGLITERAL: |
mcimadamore@1436 | 1352 | case TRUE: case FALSE: case NULL: |
mcimadamore@1436 | 1353 | case NEW: case IDENTIFIER: case ASSERT: case ENUM: |
mcimadamore@1436 | 1354 | case BYTE: case SHORT: case CHAR: case INT: |
mcimadamore@1436 | 1355 | case LONG: case FLOAT: case DOUBLE: case BOOLEAN: case VOID: |
mcimadamore@1436 | 1356 | return ParensResult.CAST; |
mcimadamore@1436 | 1357 | default: |
mcimadamore@1436 | 1358 | return ParensResult.PARENS; |
mcimadamore@1436 | 1359 | } |
mcimadamore@1436 | 1360 | case IDENTIFIER: |
mcimadamore@1436 | 1361 | if (peekToken(lookahead, IDENTIFIER)) { |
mcimadamore@1436 | 1362 | // Identifier, Identifier -> explicit lambda |
mcimadamore@1436 | 1363 | return ParensResult.EXPLICIT_LAMBDA; |
mcimadamore@1436 | 1364 | } else if (peekToken(lookahead, RPAREN, ARROW)) { |
mcimadamore@1436 | 1365 | // Identifier, ')' '->' -> implicit lambda |
mcimadamore@1436 | 1366 | return ParensResult.IMPLICIT_LAMBDA; |
mcimadamore@1436 | 1367 | } |
mcimadamore@1436 | 1368 | break; |
mcimadamore@1436 | 1369 | case FINAL: |
mcimadamore@1436 | 1370 | case ELLIPSIS: |
mcimadamore@1436 | 1371 | case MONKEYS_AT: |
mcimadamore@1436 | 1372 | //those can only appear in explicit lambdas |
mcimadamore@1436 | 1373 | return ParensResult.EXPLICIT_LAMBDA; |
mcimadamore@1436 | 1374 | case LBRACKET: |
mcimadamore@1436 | 1375 | if (peekToken(lookahead, RBRACKET, IDENTIFIER)) { |
mcimadamore@1436 | 1376 | // '[', ']', Identifier -> explicit lambda |
mcimadamore@1436 | 1377 | return ParensResult.EXPLICIT_LAMBDA; |
mcimadamore@1436 | 1378 | } else if (peekToken(lookahead, RBRACKET, RPAREN) || |
mcimadamore@1436 | 1379 | peekToken(lookahead, RBRACKET, AMP)) { |
mcimadamore@1436 | 1380 | // '[', ']', ')' -> cast |
mcimadamore@1436 | 1381 | // '[', ']', '&' -> cast (intersection type) |
mcimadamore@1436 | 1382 | return ParensResult.CAST; |
mcimadamore@1436 | 1383 | } else if (peekToken(lookahead, RBRACKET)) { |
mcimadamore@1436 | 1384 | //consume the ']' and skip |
mcimadamore@1436 | 1385 | type = true; |
mcimadamore@1436 | 1386 | lookahead++; |
mcimadamore@1436 | 1387 | break; |
mcimadamore@1436 | 1388 | } else { |
mcimadamore@1436 | 1389 | return ParensResult.PARENS; |
mcimadamore@1436 | 1390 | } |
mcimadamore@1436 | 1391 | case LT: |
mcimadamore@1436 | 1392 | depth++; break; |
mcimadamore@1436 | 1393 | case GTGTGT: |
mcimadamore@1436 | 1394 | depth--; |
mcimadamore@1436 | 1395 | case GTGT: |
mcimadamore@1436 | 1396 | depth--; |
mcimadamore@1436 | 1397 | case GT: |
mcimadamore@1436 | 1398 | depth--; |
mcimadamore@1436 | 1399 | if (depth == 0) { |
mcimadamore@1436 | 1400 | if (peekToken(lookahead, RPAREN) || |
mcimadamore@1436 | 1401 | peekToken(lookahead, AMP)) { |
mcimadamore@1436 | 1402 | // '>', ')' -> cast |
mcimadamore@1436 | 1403 | // '>', '&' -> cast |
mcimadamore@1436 | 1404 | return ParensResult.CAST; |
mcimadamore@1436 | 1405 | } else if (peekToken(lookahead, IDENTIFIER, COMMA) || |
mcimadamore@1436 | 1406 | peekToken(lookahead, IDENTIFIER, RPAREN, ARROW) || |
mcimadamore@1436 | 1407 | peekToken(lookahead, ELLIPSIS)) { |
mcimadamore@1436 | 1408 | // '>', Identifier, ',' -> explicit lambda |
mcimadamore@1436 | 1409 | // '>', Identifier, ')', '->' -> explicit lambda |
mcimadamore@1436 | 1410 | // '>', '...' -> explicit lambda |
mcimadamore@1436 | 1411 | return ParensResult.EXPLICIT_LAMBDA; |
mcimadamore@1436 | 1412 | } |
mcimadamore@1436 | 1413 | //it looks a type, but could still be (i) a cast to generic type, |
mcimadamore@1436 | 1414 | //(ii) an unbound method reference or (iii) an explicit lambda |
mcimadamore@1436 | 1415 | type = true; |
mcimadamore@1436 | 1416 | break; |
mcimadamore@1436 | 1417 | } else if (depth < 0) { |
mcimadamore@1436 | 1418 | //unbalanced '<', '>' - not a generic type |
mcimadamore@1436 | 1419 | return ParensResult.PARENS; |
mcimadamore@1436 | 1420 | } |
mcimadamore@1436 | 1421 | break; |
mcimadamore@1436 | 1422 | default: |
mcimadamore@1436 | 1423 | //this includes EOF |
mcimadamore@1436 | 1424 | return ParensResult.PARENS; |
mcimadamore@1436 | 1425 | } |
mcimadamore@1436 | 1426 | } |
mcimadamore@1436 | 1427 | } |
mcimadamore@1436 | 1428 | |
mcimadamore@1436 | 1429 | enum ParensResult { |
mcimadamore@1436 | 1430 | CAST, |
mcimadamore@1436 | 1431 | EXPLICIT_LAMBDA, |
mcimadamore@1436 | 1432 | IMPLICIT_LAMBDA, |
mcimadamore@1436 | 1433 | PARENS; |
mcimadamore@1436 | 1434 | } |
mcimadamore@1436 | 1435 | |
mcimadamore@1144 | 1436 | JCExpression lambdaExpressionOrStatement(JCVariableDecl firstParam, int pos) { |
mcimadamore@1144 | 1437 | ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
mcimadamore@1144 | 1438 | params.append(firstParam); |
mcimadamore@1144 | 1439 | JCVariableDecl lastParam = firstParam; |
mcimadamore@1144 | 1440 | while ((lastParam.mods.flags & Flags.VARARGS) == 0 && token.kind == COMMA) { |
mcimadamore@1144 | 1441 | nextToken(); |
mcimadamore@1144 | 1442 | params.append(lastParam = formalParameter()); |
mcimadamore@1144 | 1443 | } |
mcimadamore@1144 | 1444 | accept(RPAREN); |
mcimadamore@1144 | 1445 | return lambdaExpressionOrStatementRest(params.toList(), pos); |
mcimadamore@1144 | 1446 | } |
mcimadamore@1144 | 1447 | |
mcimadamore@1144 | 1448 | JCExpression lambdaExpressionOrStatement(boolean hasParens, boolean explicitParams, int pos) { |
mcimadamore@1144 | 1449 | List<JCVariableDecl> params = explicitParams ? |
mcimadamore@1144 | 1450 | formalParameters() : |
mcimadamore@1144 | 1451 | implicitParameters(hasParens); |
mcimadamore@1144 | 1452 | |
mcimadamore@1144 | 1453 | return lambdaExpressionOrStatementRest(params, pos); |
mcimadamore@1144 | 1454 | } |
mcimadamore@1144 | 1455 | |
mcimadamore@1144 | 1456 | JCExpression lambdaExpressionOrStatementRest(List<JCVariableDecl> args, int pos) { |
mcimadamore@1144 | 1457 | checkLambda(); |
mcimadamore@1144 | 1458 | accept(ARROW); |
mcimadamore@1144 | 1459 | |
mcimadamore@1144 | 1460 | return token.kind == LBRACE ? |
mcimadamore@1144 | 1461 | lambdaStatement(args, pos, pos) : |
mcimadamore@1144 | 1462 | lambdaExpression(args, pos); |
mcimadamore@1144 | 1463 | } |
mcimadamore@1144 | 1464 | |
mcimadamore@1144 | 1465 | JCExpression lambdaStatement(List<JCVariableDecl> args, int pos, int pos2) { |
mcimadamore@1144 | 1466 | JCBlock block = block(pos2, 0); |
mcimadamore@1144 | 1467 | return toP(F.at(pos).Lambda(args, block)); |
mcimadamore@1144 | 1468 | } |
mcimadamore@1144 | 1469 | |
mcimadamore@1144 | 1470 | JCExpression lambdaExpression(List<JCVariableDecl> args, int pos) { |
mcimadamore@1144 | 1471 | JCTree expr = parseExpression(); |
mcimadamore@1144 | 1472 | return toP(F.at(pos).Lambda(args, expr)); |
mcimadamore@1144 | 1473 | } |
mcimadamore@1144 | 1474 | |
duke@1 | 1475 | /** SuperSuffix = Arguments | "." [TypeArguments] Ident [Arguments] |
duke@1 | 1476 | */ |
duke@1 | 1477 | JCExpression superSuffix(List<JCExpression> typeArgs, JCExpression t) { |
mcimadamore@1113 | 1478 | nextToken(); |
mcimadamore@1113 | 1479 | if (token.kind == LPAREN || typeArgs != null) { |
duke@1 | 1480 | t = arguments(typeArgs, t); |
mcimadamore@1352 | 1481 | } else if (token.kind == COLCOL) { |
mcimadamore@1145 | 1482 | if (typeArgs != null) return illegal(); |
mcimadamore@1145 | 1483 | t = memberReferenceSuffix(t); |
duke@1 | 1484 | } else { |
mcimadamore@1113 | 1485 | int pos = token.pos; |
duke@1 | 1486 | accept(DOT); |
mcimadamore@1113 | 1487 | typeArgs = (token.kind == LT) ? typeArguments(false) : null; |
duke@1 | 1488 | t = toP(F.at(pos).Select(t, ident())); |
duke@1 | 1489 | t = argumentsOpt(typeArgs, t); |
duke@1 | 1490 | } |
duke@1 | 1491 | return t; |
duke@1 | 1492 | } |
duke@1 | 1493 | |
duke@1 | 1494 | /** BasicType = BYTE | SHORT | CHAR | INT | LONG | FLOAT | DOUBLE | BOOLEAN |
duke@1 | 1495 | */ |
duke@1 | 1496 | JCPrimitiveTypeTree basicType() { |
mcimadamore@1113 | 1497 | JCPrimitiveTypeTree t = to(F.at(token.pos).TypeIdent(typetag(token.kind))); |
mcimadamore@1113 | 1498 | nextToken(); |
duke@1 | 1499 | return t; |
duke@1 | 1500 | } |
duke@1 | 1501 | |
duke@1 | 1502 | /** ArgumentsOpt = [ Arguments ] |
duke@1 | 1503 | */ |
duke@1 | 1504 | JCExpression argumentsOpt(List<JCExpression> typeArgs, JCExpression t) { |
mcimadamore@1113 | 1505 | if ((mode & EXPR) != 0 && token.kind == LPAREN || typeArgs != null) { |
duke@1 | 1506 | mode = EXPR; |
duke@1 | 1507 | return arguments(typeArgs, t); |
duke@1 | 1508 | } else { |
duke@1 | 1509 | return t; |
duke@1 | 1510 | } |
duke@1 | 1511 | } |
duke@1 | 1512 | |
duke@1 | 1513 | /** Arguments = "(" [Expression { COMMA Expression }] ")" |
duke@1 | 1514 | */ |
duke@1 | 1515 | List<JCExpression> arguments() { |
duke@1 | 1516 | ListBuffer<JCExpression> args = lb(); |
mcimadamore@1113 | 1517 | if (token.kind == LPAREN) { |
mcimadamore@1113 | 1518 | nextToken(); |
mcimadamore@1113 | 1519 | if (token.kind != RPAREN) { |
jjg@111 | 1520 | args.append(parseExpression()); |
mcimadamore@1113 | 1521 | while (token.kind == COMMA) { |
mcimadamore@1113 | 1522 | nextToken(); |
jjg@111 | 1523 | args.append(parseExpression()); |
duke@1 | 1524 | } |
duke@1 | 1525 | } |
duke@1 | 1526 | accept(RPAREN); |
duke@1 | 1527 | } else { |
mcimadamore@1113 | 1528 | syntaxError(token.pos, "expected", LPAREN); |
duke@1 | 1529 | } |
duke@1 | 1530 | return args.toList(); |
duke@1 | 1531 | } |
duke@1 | 1532 | |
duke@1 | 1533 | JCMethodInvocation arguments(List<JCExpression> typeArgs, JCExpression t) { |
mcimadamore@1113 | 1534 | int pos = token.pos; |
duke@1 | 1535 | List<JCExpression> args = arguments(); |
duke@1 | 1536 | return toP(F.at(pos).Apply(typeArgs, t, args)); |
duke@1 | 1537 | } |
duke@1 | 1538 | |
duke@1 | 1539 | /** TypeArgumentsOpt = [ TypeArguments ] |
duke@1 | 1540 | */ |
duke@1 | 1541 | JCExpression typeArgumentsOpt(JCExpression t) { |
mcimadamore@1113 | 1542 | if (token.kind == LT && |
duke@1 | 1543 | (mode & TYPE) != 0 && |
duke@1 | 1544 | (mode & NOPARAMS) == 0) { |
duke@1 | 1545 | mode = TYPE; |
duke@1 | 1546 | checkGenerics(); |
mcimadamore@948 | 1547 | return typeArguments(t, false); |
duke@1 | 1548 | } else { |
duke@1 | 1549 | return t; |
duke@1 | 1550 | } |
duke@1 | 1551 | } |
duke@1 | 1552 | List<JCExpression> typeArgumentsOpt() { |
duke@1 | 1553 | return typeArgumentsOpt(TYPE); |
duke@1 | 1554 | } |
duke@1 | 1555 | |
duke@1 | 1556 | List<JCExpression> typeArgumentsOpt(int useMode) { |
mcimadamore@1113 | 1557 | if (token.kind == LT) { |
duke@1 | 1558 | checkGenerics(); |
duke@1 | 1559 | if ((mode & useMode) == 0 || |
duke@1 | 1560 | (mode & NOPARAMS) != 0) { |
duke@1 | 1561 | illegal(); |
duke@1 | 1562 | } |
duke@1 | 1563 | mode = useMode; |
mcimadamore@948 | 1564 | return typeArguments(false); |
duke@1 | 1565 | } |
duke@1 | 1566 | return null; |
duke@1 | 1567 | } |
duke@1 | 1568 | |
jjg@1326 | 1569 | /** |
jjg@1326 | 1570 | * {@literal |
jjg@1326 | 1571 | * TypeArguments = "<" TypeArgument {"," TypeArgument} ">" |
jjg@1326 | 1572 | * } |
duke@1 | 1573 | */ |
mcimadamore@948 | 1574 | List<JCExpression> typeArguments(boolean diamondAllowed) { |
mcimadamore@1113 | 1575 | if (token.kind == LT) { |
mcimadamore@1113 | 1576 | nextToken(); |
mcimadamore@1113 | 1577 | if (token.kind == GT && diamondAllowed) { |
mcimadamore@537 | 1578 | checkDiamond(); |
mcimadamore@948 | 1579 | mode |= DIAMOND; |
mcimadamore@1113 | 1580 | nextToken(); |
mcimadamore@537 | 1581 | return List.nil(); |
mcimadamore@948 | 1582 | } else { |
mcimadamore@948 | 1583 | ListBuffer<JCExpression> args = ListBuffer.lb(); |
jjg@111 | 1584 | args.append(((mode & EXPR) == 0) ? typeArgument() : parseType()); |
mcimadamore@1113 | 1585 | while (token.kind == COMMA) { |
mcimadamore@1113 | 1586 | nextToken(); |
mcimadamore@948 | 1587 | args.append(((mode & EXPR) == 0) ? typeArgument() : parseType()); |
mcimadamore@948 | 1588 | } |
mcimadamore@1113 | 1589 | switch (token.kind) { |
mcimadamore@1113 | 1590 | |
mcimadamore@1113 | 1591 | case GTGTGTEQ: case GTGTEQ: case GTEQ: |
mcimadamore@1113 | 1592 | case GTGTGT: case GTGT: |
mcimadamore@1113 | 1593 | token = S.split(); |
mcimadamore@948 | 1594 | break; |
ksrini@1074 | 1595 | case GT: |
mcimadamore@1113 | 1596 | nextToken(); |
ksrini@1074 | 1597 | break; |
mcimadamore@948 | 1598 | default: |
mcimadamore@1113 | 1599 | args.append(syntaxError(token.pos, "expected", GT)); |
mcimadamore@948 | 1600 | break; |
mcimadamore@948 | 1601 | } |
mcimadamore@948 | 1602 | return args.toList(); |
duke@1 | 1603 | } |
duke@1 | 1604 | } else { |
mcimadamore@1113 | 1605 | return List.<JCExpression>of(syntaxError(token.pos, "expected", LT)); |
duke@1 | 1606 | } |
duke@1 | 1607 | } |
duke@1 | 1608 | |
jjg@1326 | 1609 | /** |
jjg@1326 | 1610 | * {@literal |
jjg@1326 | 1611 | * TypeArgument = Type |
jjg@722 | 1612 | * | "?" |
jjg@722 | 1613 | * | "?" EXTENDS Type {"&" Type} |
jjg@722 | 1614 | * | "?" SUPER Type |
jjg@1326 | 1615 | * } |
duke@1 | 1616 | */ |
duke@1 | 1617 | JCExpression typeArgument() { |
mcimadamore@1113 | 1618 | if (token.kind != QUES) return parseType(); |
mcimadamore@1113 | 1619 | int pos = token.pos; |
mcimadamore@1113 | 1620 | nextToken(); |
mcimadamore@1113 | 1621 | if (token.kind == EXTENDS) { |
jjg@482 | 1622 | TypeBoundKind t = to(F.at(pos).TypeBoundKind(BoundKind.EXTENDS)); |
mcimadamore@1113 | 1623 | nextToken(); |
jjg@482 | 1624 | JCExpression bound = parseType(); |
jjg@722 | 1625 | return F.at(pos).Wildcard(t, bound); |
mcimadamore@1113 | 1626 | } else if (token.kind == SUPER) { |
jjg@482 | 1627 | TypeBoundKind t = to(F.at(pos).TypeBoundKind(BoundKind.SUPER)); |
mcimadamore@1113 | 1628 | nextToken(); |
jjg@482 | 1629 | JCExpression bound = parseType(); |
jjg@722 | 1630 | return F.at(pos).Wildcard(t, bound); |
mcimadamore@1113 | 1631 | } else if (token.kind == IDENTIFIER) { |
duke@1 | 1632 | //error recovery |
duke@1 | 1633 | TypeBoundKind t = F.at(Position.NOPOS).TypeBoundKind(BoundKind.UNBOUND); |
duke@1 | 1634 | JCExpression wc = toP(F.at(pos).Wildcard(t, null)); |
mcimadamore@1113 | 1635 | JCIdent id = toP(F.at(token.pos).Ident(ident())); |
ksrini@1074 | 1636 | JCErroneous err = F.at(pos).Erroneous(List.<JCTree>of(wc, id)); |
ksrini@1074 | 1637 | reportSyntaxError(err, "expected3", GT, EXTENDS, SUPER); |
ksrini@1074 | 1638 | return err; |
duke@1 | 1639 | } else { |
jjg@482 | 1640 | TypeBoundKind t = toP(F.at(pos).TypeBoundKind(BoundKind.UNBOUND)); |
jjg@722 | 1641 | return toP(F.at(pos).Wildcard(t, null)); |
duke@1 | 1642 | } |
duke@1 | 1643 | } |
duke@1 | 1644 | |
mcimadamore@948 | 1645 | JCTypeApply typeArguments(JCExpression t, boolean diamondAllowed) { |
mcimadamore@1113 | 1646 | int pos = token.pos; |
mcimadamore@948 | 1647 | List<JCExpression> args = typeArguments(diamondAllowed); |
duke@1 | 1648 | return toP(F.at(pos).TypeApply(t, args)); |
duke@1 | 1649 | } |
duke@1 | 1650 | |
jjg@722 | 1651 | /** BracketsOpt = {"[" "]"} |
duke@1 | 1652 | */ |
jjg@722 | 1653 | private JCExpression bracketsOpt(JCExpression t) { |
mcimadamore@1113 | 1654 | if (token.kind == LBRACKET) { |
mcimadamore@1113 | 1655 | int pos = token.pos; |
mcimadamore@1113 | 1656 | nextToken(); |
jjg@722 | 1657 | t = bracketsOptCont(t, pos); |
jjg@722 | 1658 | F.at(pos); |
duke@1 | 1659 | } |
duke@1 | 1660 | return t; |
duke@1 | 1661 | } |
duke@1 | 1662 | |
jjg@722 | 1663 | private JCArrayTypeTree bracketsOptCont(JCExpression t, int pos) { |
duke@1 | 1664 | accept(RBRACKET); |
jjg@722 | 1665 | t = bracketsOpt(t); |
duke@1 | 1666 | return toP(F.at(pos).TypeArray(t)); |
duke@1 | 1667 | } |
duke@1 | 1668 | |
duke@1 | 1669 | /** BracketsSuffixExpr = "." CLASS |
duke@1 | 1670 | * BracketsSuffixType = |
duke@1 | 1671 | */ |
duke@1 | 1672 | JCExpression bracketsSuffix(JCExpression t) { |
mcimadamore@1113 | 1673 | if ((mode & EXPR) != 0 && token.kind == DOT) { |
duke@1 | 1674 | mode = EXPR; |
mcimadamore@1113 | 1675 | int pos = token.pos; |
mcimadamore@1113 | 1676 | nextToken(); |
duke@1 | 1677 | accept(CLASS); |
ksrini@1138 | 1678 | if (token.pos == endPosTable.errorEndPos) { |
duke@1 | 1679 | // error recovery |
duke@1 | 1680 | Name name = null; |
mcimadamore@1113 | 1681 | if (token.kind == IDENTIFIER) { |
mcimadamore@1113 | 1682 | name = token.name(); |
mcimadamore@1113 | 1683 | nextToken(); |
duke@1 | 1684 | } else { |
duke@1 | 1685 | name = names.error; |
duke@1 | 1686 | } |
duke@1 | 1687 | t = F.at(pos).Erroneous(List.<JCTree>of(toP(F.at(pos).Select(t, name)))); |
duke@1 | 1688 | } else { |
duke@1 | 1689 | t = toP(F.at(pos).Select(t, names._class)); |
duke@1 | 1690 | } |
duke@1 | 1691 | } else if ((mode & TYPE) != 0) { |
mcimadamore@1352 | 1692 | if (token.kind != COLCOL) { |
mcimadamore@1352 | 1693 | mode = TYPE; |
mcimadamore@1352 | 1694 | } |
mcimadamore@1352 | 1695 | } else if (token.kind != COLCOL) { |
mcimadamore@1113 | 1696 | syntaxError(token.pos, "dot.class.expected"); |
duke@1 | 1697 | } |
duke@1 | 1698 | return t; |
duke@1 | 1699 | } |
duke@1 | 1700 | |
mcimadamore@1145 | 1701 | /** |
mcimadamore@1352 | 1702 | * MemberReferenceSuffix = "::" [TypeArguments] Ident |
mcimadamore@1352 | 1703 | * | "::" [TypeArguments] "new" |
mcimadamore@1145 | 1704 | */ |
mcimadamore@1145 | 1705 | JCExpression memberReferenceSuffix(JCExpression t) { |
mcimadamore@1145 | 1706 | int pos1 = token.pos; |
mcimadamore@1352 | 1707 | accept(COLCOL); |
mcimadamore@1145 | 1708 | return memberReferenceSuffix(pos1, t); |
mcimadamore@1145 | 1709 | } |
mcimadamore@1145 | 1710 | |
mcimadamore@1145 | 1711 | JCExpression memberReferenceSuffix(int pos1, JCExpression t) { |
mcimadamore@1145 | 1712 | checkMethodReferences(); |
mcimadamore@1145 | 1713 | mode = EXPR; |
mcimadamore@1145 | 1714 | List<JCExpression> typeArgs = null; |
mcimadamore@1145 | 1715 | if (token.kind == LT) { |
mcimadamore@1145 | 1716 | typeArgs = typeArguments(false); |
mcimadamore@1145 | 1717 | } |
mcimadamore@1145 | 1718 | Name refName = null; |
mcimadamore@1145 | 1719 | ReferenceMode refMode = null; |
mcimadamore@1145 | 1720 | if (token.kind == NEW) { |
mcimadamore@1145 | 1721 | refMode = ReferenceMode.NEW; |
mcimadamore@1145 | 1722 | refName = names.init; |
mcimadamore@1145 | 1723 | nextToken(); |
mcimadamore@1145 | 1724 | } else { |
mcimadamore@1145 | 1725 | refMode = ReferenceMode.INVOKE; |
mcimadamore@1145 | 1726 | refName = ident(); |
mcimadamore@1145 | 1727 | } |
mcimadamore@1145 | 1728 | return toP(F.at(t.getStartPosition()).Reference(refMode, refName, t, typeArgs)); |
mcimadamore@1145 | 1729 | } |
mcimadamore@1145 | 1730 | |
jjg@722 | 1731 | /** Creator = Qualident [TypeArguments] ( ArrayCreatorRest | ClassCreatorRest ) |
duke@1 | 1732 | */ |
duke@1 | 1733 | JCExpression creator(int newpos, List<JCExpression> typeArgs) { |
mcimadamore@1113 | 1734 | switch (token.kind) { |
duke@1 | 1735 | case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT: |
duke@1 | 1736 | case DOUBLE: case BOOLEAN: |
jjg@722 | 1737 | if (typeArgs == null) |
jjg@722 | 1738 | return arrayCreatorRest(newpos, basicType()); |
duke@1 | 1739 | break; |
duke@1 | 1740 | default: |
duke@1 | 1741 | } |
duke@1 | 1742 | JCExpression t = qualident(); |
duke@1 | 1743 | int oldmode = mode; |
mcimadamore@948 | 1744 | mode = TYPE; |
mcimadamore@948 | 1745 | boolean diamondFound = false; |
mcimadamore@1061 | 1746 | int lastTypeargsPos = -1; |
mcimadamore@1113 | 1747 | if (token.kind == LT) { |
duke@1 | 1748 | checkGenerics(); |
mcimadamore@1113 | 1749 | lastTypeargsPos = token.pos; |
mcimadamore@948 | 1750 | t = typeArguments(t, true); |
mcimadamore@948 | 1751 | diamondFound = (mode & DIAMOND) != 0; |
duke@1 | 1752 | } |
mcimadamore@1113 | 1753 | while (token.kind == DOT) { |
mcimadamore@948 | 1754 | if (diamondFound) { |
mcimadamore@948 | 1755 | //cannot select after a diamond |
ksrini@1074 | 1756 | illegal(); |
mcimadamore@948 | 1757 | } |
mcimadamore@1113 | 1758 | int pos = token.pos; |
mcimadamore@1113 | 1759 | nextToken(); |
duke@1 | 1760 | t = toP(F.at(pos).Select(t, ident())); |
mcimadamore@1113 | 1761 | if (token.kind == LT) { |
mcimadamore@1113 | 1762 | lastTypeargsPos = token.pos; |
duke@1 | 1763 | checkGenerics(); |
mcimadamore@948 | 1764 | t = typeArguments(t, true); |
mcimadamore@948 | 1765 | diamondFound = (mode & DIAMOND) != 0; |
duke@1 | 1766 | } |
duke@1 | 1767 | } |
duke@1 | 1768 | mode = oldmode; |
mcimadamore@1113 | 1769 | if (token.kind == LBRACKET) { |
duke@1 | 1770 | JCExpression e = arrayCreatorRest(newpos, t); |
mcimadamore@1061 | 1771 | if (diamondFound) { |
mcimadamore@1061 | 1772 | reportSyntaxError(lastTypeargsPos, "cannot.create.array.with.diamond"); |
mcimadamore@1061 | 1773 | return toP(F.at(newpos).Erroneous(List.of(e))); |
mcimadamore@1061 | 1774 | } |
mcimadamore@1061 | 1775 | else if (typeArgs != null) { |
duke@1 | 1776 | int pos = newpos; |
duke@1 | 1777 | if (!typeArgs.isEmpty() && typeArgs.head.pos != Position.NOPOS) { |
duke@1 | 1778 | // note: this should always happen but we should |
duke@1 | 1779 | // not rely on this as the parser is continuously |
duke@1 | 1780 | // modified to improve error recovery. |
duke@1 | 1781 | pos = typeArgs.head.pos; |
duke@1 | 1782 | } |
mcimadamore@1113 | 1783 | setErrorEndPos(S.prevToken().endPos); |
ksrini@1074 | 1784 | JCErroneous err = F.at(pos).Erroneous(typeArgs.prepend(e)); |
ksrini@1074 | 1785 | reportSyntaxError(err, "cannot.create.array.with.type.arguments"); |
ksrini@1074 | 1786 | return toP(err); |
duke@1 | 1787 | } |
duke@1 | 1788 | return e; |
mcimadamore@1113 | 1789 | } else if (token.kind == LPAREN) { |
jjg@722 | 1790 | return classCreatorRest(newpos, null, typeArgs, t); |
duke@1 | 1791 | } else { |
mcimadamore@1113 | 1792 | setErrorEndPos(token.pos); |
mcimadamore@1113 | 1793 | reportSyntaxError(token.pos, "expected2", LPAREN, LBRACKET); |
duke@1 | 1794 | t = toP(F.at(newpos).NewClass(null, typeArgs, t, List.<JCExpression>nil(), null)); |
duke@1 | 1795 | return toP(F.at(newpos).Erroneous(List.<JCTree>of(t))); |
duke@1 | 1796 | } |
duke@1 | 1797 | } |
duke@1 | 1798 | |
duke@1 | 1799 | /** InnerCreator = Ident [TypeArguments] ClassCreatorRest |
duke@1 | 1800 | */ |
duke@1 | 1801 | JCExpression innerCreator(int newpos, List<JCExpression> typeArgs, JCExpression encl) { |
mcimadamore@1113 | 1802 | JCExpression t = toP(F.at(token.pos).Ident(ident())); |
mcimadamore@1113 | 1803 | if (token.kind == LT) { |
mcimadamore@537 | 1804 | int oldmode = mode; |
duke@1 | 1805 | checkGenerics(); |
mcimadamore@948 | 1806 | t = typeArguments(t, true); |
mcimadamore@537 | 1807 | mode = oldmode; |
duke@1 | 1808 | } |
duke@1 | 1809 | return classCreatorRest(newpos, encl, typeArgs, t); |
duke@1 | 1810 | } |
duke@1 | 1811 | |
jjg@722 | 1812 | /** ArrayCreatorRest = "[" ( "]" BracketsOpt ArrayInitializer |
jjg@722 | 1813 | * | Expression "]" {"[" Expression "]"} BracketsOpt ) |
duke@1 | 1814 | */ |
duke@1 | 1815 | JCExpression arrayCreatorRest(int newpos, JCExpression elemtype) { |
duke@1 | 1816 | accept(LBRACKET); |
mcimadamore@1113 | 1817 | if (token.kind == RBRACKET) { |
duke@1 | 1818 | accept(RBRACKET); |
jjg@722 | 1819 | elemtype = bracketsOpt(elemtype); |
mcimadamore@1113 | 1820 | if (token.kind == LBRACE) { |
jjg@722 | 1821 | return arrayInitializer(newpos, elemtype); |
duke@1 | 1822 | } else { |
ksrini@1074 | 1823 | JCExpression t = toP(F.at(newpos).NewArray(elemtype, List.<JCExpression>nil(), null)); |
mcimadamore@1113 | 1824 | return syntaxError(token.pos, List.<JCTree>of(t), "array.dimension.missing"); |
duke@1 | 1825 | } |
duke@1 | 1826 | } else { |
duke@1 | 1827 | ListBuffer<JCExpression> dims = new ListBuffer<JCExpression>(); |
jjg@111 | 1828 | dims.append(parseExpression()); |
duke@1 | 1829 | accept(RBRACKET); |
mcimadamore@1113 | 1830 | while (token.kind == LBRACKET) { |
mcimadamore@1113 | 1831 | int pos = token.pos; |
mcimadamore@1113 | 1832 | nextToken(); |
mcimadamore@1113 | 1833 | if (token.kind == RBRACKET) { |
jjg@722 | 1834 | elemtype = bracketsOptCont(elemtype, pos); |
duke@1 | 1835 | } else { |
jjg@722 | 1836 | dims.append(parseExpression()); |
jjg@722 | 1837 | accept(RBRACKET); |
duke@1 | 1838 | } |
duke@1 | 1839 | } |
jjg@722 | 1840 | return toP(F.at(newpos).NewArray(elemtype, dims.toList(), null)); |
duke@1 | 1841 | } |
duke@1 | 1842 | } |
duke@1 | 1843 | |
duke@1 | 1844 | /** ClassCreatorRest = Arguments [ClassBody] |
duke@1 | 1845 | */ |
jjg@308 | 1846 | JCNewClass classCreatorRest(int newpos, |
duke@1 | 1847 | JCExpression encl, |
duke@1 | 1848 | List<JCExpression> typeArgs, |
duke@1 | 1849 | JCExpression t) |
duke@1 | 1850 | { |
duke@1 | 1851 | List<JCExpression> args = arguments(); |
duke@1 | 1852 | JCClassDecl body = null; |
mcimadamore@1113 | 1853 | if (token.kind == LBRACE) { |
mcimadamore@1113 | 1854 | int pos = token.pos; |
duke@1 | 1855 | List<JCTree> defs = classOrInterfaceBody(names.empty, false); |
duke@1 | 1856 | JCModifiers mods = F.at(Position.NOPOS).Modifiers(0); |
duke@1 | 1857 | body = toP(F.at(pos).AnonymousClassDef(mods, defs)); |
duke@1 | 1858 | } |
duke@1 | 1859 | return toP(F.at(newpos).NewClass(encl, typeArgs, t, args, body)); |
duke@1 | 1860 | } |
duke@1 | 1861 | |
duke@1 | 1862 | /** ArrayInitializer = "{" [VariableInitializer {"," VariableInitializer}] [","] "}" |
duke@1 | 1863 | */ |
duke@1 | 1864 | JCExpression arrayInitializer(int newpos, JCExpression t) { |
duke@1 | 1865 | accept(LBRACE); |
duke@1 | 1866 | ListBuffer<JCExpression> elems = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 1867 | if (token.kind == COMMA) { |
mcimadamore@1113 | 1868 | nextToken(); |
mcimadamore@1113 | 1869 | } else if (token.kind != RBRACE) { |
duke@1 | 1870 | elems.append(variableInitializer()); |
mcimadamore@1113 | 1871 | while (token.kind == COMMA) { |
mcimadamore@1113 | 1872 | nextToken(); |
mcimadamore@1113 | 1873 | if (token.kind == RBRACE) break; |
duke@1 | 1874 | elems.append(variableInitializer()); |
duke@1 | 1875 | } |
duke@1 | 1876 | } |
duke@1 | 1877 | accept(RBRACE); |
duke@1 | 1878 | return toP(F.at(newpos).NewArray(t, List.<JCExpression>nil(), elems.toList())); |
duke@1 | 1879 | } |
duke@1 | 1880 | |
duke@1 | 1881 | /** VariableInitializer = ArrayInitializer | Expression |
duke@1 | 1882 | */ |
duke@1 | 1883 | public JCExpression variableInitializer() { |
mcimadamore@1113 | 1884 | return token.kind == LBRACE ? arrayInitializer(token.pos, null) : parseExpression(); |
duke@1 | 1885 | } |
duke@1 | 1886 | |
duke@1 | 1887 | /** ParExpression = "(" Expression ")" |
duke@1 | 1888 | */ |
duke@1 | 1889 | JCExpression parExpression() { |
ksrini@1138 | 1890 | int pos = token.pos; |
duke@1 | 1891 | accept(LPAREN); |
jjg@111 | 1892 | JCExpression t = parseExpression(); |
duke@1 | 1893 | accept(RPAREN); |
ksrini@1138 | 1894 | return toP(F.at(pos).Parens(t)); |
duke@1 | 1895 | } |
duke@1 | 1896 | |
duke@1 | 1897 | /** Block = "{" BlockStatements "}" |
duke@1 | 1898 | */ |
duke@1 | 1899 | JCBlock block(int pos, long flags) { |
duke@1 | 1900 | accept(LBRACE); |
duke@1 | 1901 | List<JCStatement> stats = blockStatements(); |
duke@1 | 1902 | JCBlock t = F.at(pos).Block(flags, stats); |
mcimadamore@1113 | 1903 | while (token.kind == CASE || token.kind == DEFAULT) { |
mcimadamore@1113 | 1904 | syntaxError("orphaned", token.kind); |
duke@1 | 1905 | switchBlockStatementGroups(); |
duke@1 | 1906 | } |
duke@1 | 1907 | // the Block node has a field "endpos" for first char of last token, which is |
duke@1 | 1908 | // usually but not necessarily the last char of the last token. |
mcimadamore@1113 | 1909 | t.endpos = token.pos; |
duke@1 | 1910 | accept(RBRACE); |
duke@1 | 1911 | return toP(t); |
duke@1 | 1912 | } |
duke@1 | 1913 | |
duke@1 | 1914 | public JCBlock block() { |
mcimadamore@1113 | 1915 | return block(token.pos, 0); |
duke@1 | 1916 | } |
duke@1 | 1917 | |
duke@1 | 1918 | /** BlockStatements = { BlockStatement } |
duke@1 | 1919 | * BlockStatement = LocalVariableDeclarationStatement |
duke@1 | 1920 | * | ClassOrInterfaceOrEnumDeclaration |
duke@1 | 1921 | * | [Ident ":"] Statement |
duke@1 | 1922 | * LocalVariableDeclarationStatement |
duke@1 | 1923 | * = { FINAL | '@' Annotation } Type VariableDeclarators ";" |
duke@1 | 1924 | */ |
duke@1 | 1925 | @SuppressWarnings("fallthrough") |
duke@1 | 1926 | List<JCStatement> blockStatements() { |
ksrini@1249 | 1927 | //todo: skip to anchor on error(?) |
duke@1 | 1928 | ListBuffer<JCStatement> stats = new ListBuffer<JCStatement>(); |
duke@1 | 1929 | while (true) { |
ksrini@1249 | 1930 | List<JCStatement> stat = blockStatement(); |
ksrini@1249 | 1931 | if (stat.isEmpty()) { |
duke@1 | 1932 | return stats.toList(); |
ksrini@1249 | 1933 | } else { |
ksrini@1249 | 1934 | if (token.pos <= endPosTable.errorEndPos) { |
ksrini@1249 | 1935 | skip(false, true, true, true); |
ksrini@1249 | 1936 | } |
ksrini@1249 | 1937 | stats.addAll(stat); |
ksrini@1249 | 1938 | } |
ksrini@1249 | 1939 | } |
ksrini@1249 | 1940 | } |
ksrini@1249 | 1941 | |
ksrini@1249 | 1942 | /* |
ksrini@1249 | 1943 | * This method parses a statement treating it as a block, relaxing the |
ksrini@1249 | 1944 | * JLS restrictions, allows us to parse more faulty code, doing so |
ksrini@1249 | 1945 | * enables us to provide better and accurate diagnostics to the user. |
ksrini@1249 | 1946 | */ |
ksrini@1249 | 1947 | JCStatement parseStatementAsBlock() { |
ksrini@1249 | 1948 | int pos = token.pos; |
ksrini@1249 | 1949 | List<JCStatement> stats = blockStatement(); |
ksrini@1249 | 1950 | if (stats.isEmpty()) { |
ksrini@1249 | 1951 | JCErroneous e = F.at(pos).Erroneous(); |
ksrini@1249 | 1952 | error(e, "illegal.start.of.stmt"); |
ksrini@1249 | 1953 | return F.at(pos).Exec(e); |
ksrini@1249 | 1954 | } else { |
ksrini@1249 | 1955 | JCStatement first = stats.head; |
ksrini@1249 | 1956 | String error = null; |
ksrini@1249 | 1957 | switch (first.getTag()) { |
ksrini@1249 | 1958 | case CLASSDEF: |
ksrini@1249 | 1959 | error = "class.not.allowed"; |
duke@1 | 1960 | break; |
ksrini@1249 | 1961 | case VARDEF: |
ksrini@1249 | 1962 | error = "variable.not.allowed"; |
duke@1 | 1963 | break; |
duke@1 | 1964 | } |
ksrini@1249 | 1965 | if (error != null) { |
ksrini@1249 | 1966 | error(first, error); |
ksrini@1249 | 1967 | List<JCBlock> blist = List.of(F.at(first.pos).Block(0, stats)); |
ksrini@1249 | 1968 | return toP(F.at(pos).Exec(F.at(first.pos).Erroneous(blist))); |
duke@1 | 1969 | } |
ksrini@1249 | 1970 | return first; |
ksrini@1249 | 1971 | } |
ksrini@1249 | 1972 | } |
ksrini@1249 | 1973 | |
ksrini@1249 | 1974 | @SuppressWarnings("fallthrough") |
ksrini@1249 | 1975 | List<JCStatement> blockStatement() { |
ksrini@1249 | 1976 | //todo: skip to anchor on error(?) |
ksrini@1249 | 1977 | int pos = token.pos; |
ksrini@1249 | 1978 | switch (token.kind) { |
ksrini@1249 | 1979 | case RBRACE: case CASE: case DEFAULT: case EOF: |
ksrini@1249 | 1980 | return List.nil(); |
ksrini@1249 | 1981 | case LBRACE: case IF: case FOR: case WHILE: case DO: case TRY: |
ksrini@1249 | 1982 | case SWITCH: case SYNCHRONIZED: case RETURN: case THROW: case BREAK: |
ksrini@1249 | 1983 | case CONTINUE: case SEMI: case ELSE: case FINALLY: case CATCH: |
ksrini@1249 | 1984 | return List.of(parseStatement()); |
ksrini@1249 | 1985 | case MONKEYS_AT: |
ksrini@1249 | 1986 | case FINAL: { |
jjg@1280 | 1987 | Comment dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 1988 | JCModifiers mods = modifiersOpt(); |
ksrini@1249 | 1989 | if (token.kind == INTERFACE || |
ksrini@1249 | 1990 | token.kind == CLASS || |
ksrini@1249 | 1991 | allowEnums && token.kind == ENUM) { |
ksrini@1249 | 1992 | return List.of(classOrInterfaceOrEnumDeclaration(mods, dc)); |
ksrini@1249 | 1993 | } else { |
ksrini@1249 | 1994 | JCExpression t = parseType(); |
ksrini@1249 | 1995 | ListBuffer<JCStatement> stats = |
ksrini@1249 | 1996 | variableDeclarators(mods, t, new ListBuffer<JCStatement>()); |
ksrini@1249 | 1997 | // A "LocalVariableDeclarationStatement" subsumes the terminating semicolon |
jlahoda@1444 | 1998 | storeEnd(stats.last(), token.endPos); |
ksrini@1249 | 1999 | accept(SEMI); |
ksrini@1249 | 2000 | return stats.toList(); |
duke@1 | 2001 | } |
ksrini@1249 | 2002 | } |
ksrini@1249 | 2003 | case ABSTRACT: case STRICTFP: { |
jjg@1280 | 2004 | Comment dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 2005 | JCModifiers mods = modifiersOpt(); |
ksrini@1249 | 2006 | return List.of(classOrInterfaceOrEnumDeclaration(mods, dc)); |
ksrini@1249 | 2007 | } |
ksrini@1249 | 2008 | case INTERFACE: |
ksrini@1249 | 2009 | case CLASS: |
jjg@1280 | 2010 | Comment dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 2011 | return List.of(classOrInterfaceOrEnumDeclaration(modifiersOpt(), dc)); |
ksrini@1249 | 2012 | case ENUM: |
ksrini@1249 | 2013 | case ASSERT: |
ksrini@1249 | 2014 | if (allowEnums && token.kind == ENUM) { |
ksrini@1249 | 2015 | error(token.pos, "local.enum"); |
ksrini@1249 | 2016 | dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 2017 | return List.of(classOrInterfaceOrEnumDeclaration(modifiersOpt(), dc)); |
ksrini@1249 | 2018 | } else if (allowAsserts && token.kind == ASSERT) { |
ksrini@1249 | 2019 | return List.of(parseStatement()); |
ksrini@1249 | 2020 | } |
ksrini@1249 | 2021 | /* fall through to default */ |
ksrini@1249 | 2022 | default: |
ksrini@1249 | 2023 | Token prevToken = token; |
ksrini@1249 | 2024 | JCExpression t = term(EXPR | TYPE); |
ksrini@1249 | 2025 | if (token.kind == COLON && t.hasTag(IDENT)) { |
ksrini@1249 | 2026 | nextToken(); |
ksrini@1249 | 2027 | JCStatement stat = parseStatement(); |
ksrini@1249 | 2028 | return List.<JCStatement>of(F.at(pos).Labelled(prevToken.name(), stat)); |
ksrini@1249 | 2029 | } else if ((lastmode & TYPE) != 0 && |
ksrini@1249 | 2030 | (token.kind == IDENTIFIER || |
ksrini@1249 | 2031 | token.kind == ASSERT || |
ksrini@1249 | 2032 | token.kind == ENUM)) { |
ksrini@1249 | 2033 | pos = token.pos; |
ksrini@1249 | 2034 | JCModifiers mods = F.at(Position.NOPOS).Modifiers(0); |
ksrini@1249 | 2035 | F.at(pos); |
ksrini@1249 | 2036 | ListBuffer<JCStatement> stats = |
ksrini@1249 | 2037 | variableDeclarators(mods, t, new ListBuffer<JCStatement>()); |
ksrini@1249 | 2038 | // A "LocalVariableDeclarationStatement" subsumes the terminating semicolon |
jlahoda@1444 | 2039 | storeEnd(stats.last(), token.endPos); |
ksrini@1249 | 2040 | accept(SEMI); |
duke@1 | 2041 | return stats.toList(); |
ksrini@1249 | 2042 | } else { |
ksrini@1249 | 2043 | // This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon |
ksrini@1249 | 2044 | JCExpressionStatement expr = to(F.at(pos).Exec(checkExprStat(t))); |
ksrini@1249 | 2045 | accept(SEMI); |
ksrini@1249 | 2046 | return List.<JCStatement>of(expr); |
duke@1 | 2047 | } |
duke@1 | 2048 | } |
duke@1 | 2049 | } |
duke@1 | 2050 | |
duke@1 | 2051 | /** Statement = |
duke@1 | 2052 | * Block |
duke@1 | 2053 | * | IF ParExpression Statement [ELSE Statement] |
duke@1 | 2054 | * | FOR "(" ForInitOpt ";" [Expression] ";" ForUpdateOpt ")" Statement |
duke@1 | 2055 | * | FOR "(" FormalParameter : Expression ")" Statement |
duke@1 | 2056 | * | WHILE ParExpression Statement |
duke@1 | 2057 | * | DO Statement WHILE ParExpression ";" |
duke@1 | 2058 | * | TRY Block ( Catches | [Catches] FinallyPart ) |
darcy@850 | 2059 | * | TRY "(" ResourceSpecification ";"opt ")" Block [Catches] [FinallyPart] |
duke@1 | 2060 | * | SWITCH ParExpression "{" SwitchBlockStatementGroups "}" |
duke@1 | 2061 | * | SYNCHRONIZED ParExpression Block |
duke@1 | 2062 | * | RETURN [Expression] ";" |
duke@1 | 2063 | * | THROW Expression ";" |
duke@1 | 2064 | * | BREAK [Ident] ";" |
duke@1 | 2065 | * | CONTINUE [Ident] ";" |
duke@1 | 2066 | * | ASSERT Expression [ ":" Expression ] ";" |
duke@1 | 2067 | * | ";" |
duke@1 | 2068 | * | ExpressionStatement |
duke@1 | 2069 | * | Ident ":" Statement |
duke@1 | 2070 | */ |
duke@1 | 2071 | @SuppressWarnings("fallthrough") |
jjg@111 | 2072 | public JCStatement parseStatement() { |
mcimadamore@1113 | 2073 | int pos = token.pos; |
mcimadamore@1113 | 2074 | switch (token.kind) { |
duke@1 | 2075 | case LBRACE: |
duke@1 | 2076 | return block(); |
duke@1 | 2077 | case IF: { |
mcimadamore@1113 | 2078 | nextToken(); |
duke@1 | 2079 | JCExpression cond = parExpression(); |
ksrini@1249 | 2080 | JCStatement thenpart = parseStatementAsBlock(); |
duke@1 | 2081 | JCStatement elsepart = null; |
mcimadamore@1113 | 2082 | if (token.kind == ELSE) { |
mcimadamore@1113 | 2083 | nextToken(); |
ksrini@1249 | 2084 | elsepart = parseStatementAsBlock(); |
duke@1 | 2085 | } |
duke@1 | 2086 | return F.at(pos).If(cond, thenpart, elsepart); |
duke@1 | 2087 | } |
duke@1 | 2088 | case FOR: { |
mcimadamore@1113 | 2089 | nextToken(); |
duke@1 | 2090 | accept(LPAREN); |
mcimadamore@1113 | 2091 | List<JCStatement> inits = token.kind == SEMI ? List.<JCStatement>nil() : forInit(); |
duke@1 | 2092 | if (inits.length() == 1 && |
jjg@1127 | 2093 | inits.head.hasTag(VARDEF) && |
duke@1 | 2094 | ((JCVariableDecl) inits.head).init == null && |
mcimadamore@1113 | 2095 | token.kind == COLON) { |
duke@1 | 2096 | checkForeach(); |
duke@1 | 2097 | JCVariableDecl var = (JCVariableDecl)inits.head; |
duke@1 | 2098 | accept(COLON); |
jjg@111 | 2099 | JCExpression expr = parseExpression(); |
duke@1 | 2100 | accept(RPAREN); |
ksrini@1249 | 2101 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 2102 | return F.at(pos).ForeachLoop(var, expr, body); |
duke@1 | 2103 | } else { |
duke@1 | 2104 | accept(SEMI); |
mcimadamore@1113 | 2105 | JCExpression cond = token.kind == SEMI ? null : parseExpression(); |
duke@1 | 2106 | accept(SEMI); |
mcimadamore@1113 | 2107 | List<JCExpressionStatement> steps = token.kind == RPAREN ? List.<JCExpressionStatement>nil() : forUpdate(); |
duke@1 | 2108 | accept(RPAREN); |
ksrini@1249 | 2109 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 2110 | return F.at(pos).ForLoop(inits, cond, steps, body); |
duke@1 | 2111 | } |
duke@1 | 2112 | } |
duke@1 | 2113 | case WHILE: { |
mcimadamore@1113 | 2114 | nextToken(); |
duke@1 | 2115 | JCExpression cond = parExpression(); |
ksrini@1249 | 2116 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 2117 | return F.at(pos).WhileLoop(cond, body); |
duke@1 | 2118 | } |
duke@1 | 2119 | case DO: { |
mcimadamore@1113 | 2120 | nextToken(); |
ksrini@1249 | 2121 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 2122 | accept(WHILE); |
duke@1 | 2123 | JCExpression cond = parExpression(); |
duke@1 | 2124 | JCDoWhileLoop t = to(F.at(pos).DoLoop(body, cond)); |
duke@1 | 2125 | accept(SEMI); |
duke@1 | 2126 | return t; |
duke@1 | 2127 | } |
duke@1 | 2128 | case TRY: { |
mcimadamore@1113 | 2129 | nextToken(); |
darcy@609 | 2130 | List<JCTree> resources = List.<JCTree>nil(); |
mcimadamore@1113 | 2131 | if (token.kind == LPAREN) { |
mcimadamore@743 | 2132 | checkTryWithResources(); |
mcimadamore@1113 | 2133 | nextToken(); |
darcy@609 | 2134 | resources = resources(); |
darcy@609 | 2135 | accept(RPAREN); |
darcy@609 | 2136 | } |
duke@1 | 2137 | JCBlock body = block(); |
duke@1 | 2138 | ListBuffer<JCCatch> catchers = new ListBuffer<JCCatch>(); |
duke@1 | 2139 | JCBlock finalizer = null; |
mcimadamore@1113 | 2140 | if (token.kind == CATCH || token.kind == FINALLY) { |
mcimadamore@1113 | 2141 | while (token.kind == CATCH) catchers.append(catchClause()); |
mcimadamore@1113 | 2142 | if (token.kind == FINALLY) { |
mcimadamore@1113 | 2143 | nextToken(); |
duke@1 | 2144 | finalizer = block(); |
duke@1 | 2145 | } |
duke@1 | 2146 | } else { |
darcy@609 | 2147 | if (allowTWR) { |
darcy@609 | 2148 | if (resources.isEmpty()) |
jjg@726 | 2149 | error(pos, "try.without.catch.finally.or.resource.decls"); |
darcy@609 | 2150 | } else |
jjg@726 | 2151 | error(pos, "try.without.catch.or.finally"); |
duke@1 | 2152 | } |
darcy@609 | 2153 | return F.at(pos).Try(resources, body, catchers.toList(), finalizer); |
duke@1 | 2154 | } |
duke@1 | 2155 | case SWITCH: { |
mcimadamore@1113 | 2156 | nextToken(); |
duke@1 | 2157 | JCExpression selector = parExpression(); |
duke@1 | 2158 | accept(LBRACE); |
duke@1 | 2159 | List<JCCase> cases = switchBlockStatementGroups(); |
duke@1 | 2160 | JCSwitch t = to(F.at(pos).Switch(selector, cases)); |
duke@1 | 2161 | accept(RBRACE); |
duke@1 | 2162 | return t; |
duke@1 | 2163 | } |
duke@1 | 2164 | case SYNCHRONIZED: { |
mcimadamore@1113 | 2165 | nextToken(); |
duke@1 | 2166 | JCExpression lock = parExpression(); |
duke@1 | 2167 | JCBlock body = block(); |
duke@1 | 2168 | return F.at(pos).Synchronized(lock, body); |
duke@1 | 2169 | } |
duke@1 | 2170 | case RETURN: { |
mcimadamore@1113 | 2171 | nextToken(); |
mcimadamore@1113 | 2172 | JCExpression result = token.kind == SEMI ? null : parseExpression(); |
duke@1 | 2173 | JCReturn t = to(F.at(pos).Return(result)); |
duke@1 | 2174 | accept(SEMI); |
duke@1 | 2175 | return t; |
duke@1 | 2176 | } |
duke@1 | 2177 | case THROW: { |
mcimadamore@1113 | 2178 | nextToken(); |
jjg@111 | 2179 | JCExpression exc = parseExpression(); |
duke@1 | 2180 | JCThrow t = to(F.at(pos).Throw(exc)); |
duke@1 | 2181 | accept(SEMI); |
duke@1 | 2182 | return t; |
duke@1 | 2183 | } |
duke@1 | 2184 | case BREAK: { |
mcimadamore@1113 | 2185 | nextToken(); |
mcimadamore@1113 | 2186 | Name label = (token.kind == IDENTIFIER || token.kind == ASSERT || token.kind == ENUM) ? ident() : null; |
duke@1 | 2187 | JCBreak t = to(F.at(pos).Break(label)); |
duke@1 | 2188 | accept(SEMI); |
duke@1 | 2189 | return t; |
duke@1 | 2190 | } |
duke@1 | 2191 | case CONTINUE: { |
mcimadamore@1113 | 2192 | nextToken(); |
mcimadamore@1113 | 2193 | Name label = (token.kind == IDENTIFIER || token.kind == ASSERT || token.kind == ENUM) ? ident() : null; |
duke@1 | 2194 | JCContinue t = to(F.at(pos).Continue(label)); |
duke@1 | 2195 | accept(SEMI); |
duke@1 | 2196 | return t; |
duke@1 | 2197 | } |
duke@1 | 2198 | case SEMI: |
mcimadamore@1113 | 2199 | nextToken(); |
duke@1 | 2200 | return toP(F.at(pos).Skip()); |
duke@1 | 2201 | case ELSE: |
vromero@1400 | 2202 | int elsePos = token.pos; |
vromero@1400 | 2203 | nextToken(); |
vromero@1400 | 2204 | return doRecover(elsePos, BasicErrorRecoveryAction.BLOCK_STMT, "else.without.if"); |
duke@1 | 2205 | case FINALLY: |
vromero@1400 | 2206 | int finallyPos = token.pos; |
vromero@1400 | 2207 | nextToken(); |
vromero@1400 | 2208 | return doRecover(finallyPos, BasicErrorRecoveryAction.BLOCK_STMT, "finally.without.try"); |
duke@1 | 2209 | case CATCH: |
vromero@1400 | 2210 | return doRecover(token.pos, BasicErrorRecoveryAction.CATCH_CLAUSE, "catch.without.try"); |
duke@1 | 2211 | case ASSERT: { |
mcimadamore@1113 | 2212 | if (allowAsserts && token.kind == ASSERT) { |
mcimadamore@1113 | 2213 | nextToken(); |
jjg@111 | 2214 | JCExpression assertion = parseExpression(); |
duke@1 | 2215 | JCExpression message = null; |
mcimadamore@1113 | 2216 | if (token.kind == COLON) { |
mcimadamore@1113 | 2217 | nextToken(); |
jjg@111 | 2218 | message = parseExpression(); |
duke@1 | 2219 | } |
duke@1 | 2220 | JCAssert t = to(F.at(pos).Assert(assertion, message)); |
duke@1 | 2221 | accept(SEMI); |
duke@1 | 2222 | return t; |
duke@1 | 2223 | } |
duke@1 | 2224 | /* else fall through to default case */ |
duke@1 | 2225 | } |
duke@1 | 2226 | case ENUM: |
duke@1 | 2227 | default: |
mcimadamore@1113 | 2228 | Token prevToken = token; |
jjg@111 | 2229 | JCExpression expr = parseExpression(); |
jjg@1127 | 2230 | if (token.kind == COLON && expr.hasTag(IDENT)) { |
mcimadamore@1113 | 2231 | nextToken(); |
jjg@111 | 2232 | JCStatement stat = parseStatement(); |
mcimadamore@1113 | 2233 | return F.at(pos).Labelled(prevToken.name(), stat); |
duke@1 | 2234 | } else { |
duke@1 | 2235 | // This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon |
duke@1 | 2236 | JCExpressionStatement stat = to(F.at(pos).Exec(checkExprStat(expr))); |
duke@1 | 2237 | accept(SEMI); |
duke@1 | 2238 | return stat; |
duke@1 | 2239 | } |
duke@1 | 2240 | } |
duke@1 | 2241 | } |
duke@1 | 2242 | |
vromero@1400 | 2243 | private JCStatement doRecover(int startPos, ErrorRecoveryAction action, String key) { |
vromero@1400 | 2244 | int errPos = S.errPos(); |
vromero@1400 | 2245 | JCTree stm = action.doRecover(this); |
vromero@1400 | 2246 | S.errPos(errPos); |
vromero@1400 | 2247 | return toP(F.Exec(syntaxError(startPos, List.<JCTree>of(stm), key))); |
vromero@1400 | 2248 | } |
vromero@1400 | 2249 | |
duke@1 | 2250 | /** CatchClause = CATCH "(" FormalParameter ")" Block |
duke@1 | 2251 | */ |
ksrini@1074 | 2252 | protected JCCatch catchClause() { |
mcimadamore@1113 | 2253 | int pos = token.pos; |
duke@1 | 2254 | accept(CATCH); |
duke@1 | 2255 | accept(LPAREN); |
mcimadamore@550 | 2256 | JCModifiers mods = optFinal(Flags.PARAMETER); |
mcimadamore@550 | 2257 | List<JCExpression> catchTypes = catchTypes(); |
mcimadamore@550 | 2258 | JCExpression paramType = catchTypes.size() > 1 ? |
darcy@969 | 2259 | toP(F.at(catchTypes.head.getStartPosition()).TypeUnion(catchTypes)) : |
mcimadamore@550 | 2260 | catchTypes.head; |
mcimadamore@550 | 2261 | JCVariableDecl formal = variableDeclaratorId(mods, paramType); |
duke@1 | 2262 | accept(RPAREN); |
duke@1 | 2263 | JCBlock body = block(); |
duke@1 | 2264 | return F.at(pos).Catch(formal, body); |
duke@1 | 2265 | } |
duke@1 | 2266 | |
mcimadamore@550 | 2267 | List<JCExpression> catchTypes() { |
mcimadamore@550 | 2268 | ListBuffer<JCExpression> catchTypes = ListBuffer.lb(); |
mcimadamore@550 | 2269 | catchTypes.add(parseType()); |
mcimadamore@1113 | 2270 | while (token.kind == BAR) { |
mcimadamore@550 | 2271 | checkMulticatch(); |
mcimadamore@1113 | 2272 | nextToken(); |
mcimadamore@550 | 2273 | catchTypes.add(qualident()); |
mcimadamore@550 | 2274 | } |
mcimadamore@550 | 2275 | return catchTypes.toList(); |
mcimadamore@550 | 2276 | } |
mcimadamore@550 | 2277 | |
duke@1 | 2278 | /** SwitchBlockStatementGroups = { SwitchBlockStatementGroup } |
duke@1 | 2279 | * SwitchBlockStatementGroup = SwitchLabel BlockStatements |
duke@1 | 2280 | * SwitchLabel = CASE ConstantExpression ":" | DEFAULT ":" |
duke@1 | 2281 | */ |
duke@1 | 2282 | List<JCCase> switchBlockStatementGroups() { |
duke@1 | 2283 | ListBuffer<JCCase> cases = new ListBuffer<JCCase>(); |
duke@1 | 2284 | while (true) { |
mcimadamore@1113 | 2285 | int pos = token.pos; |
mcimadamore@1113 | 2286 | switch (token.kind) { |
ksrini@1346 | 2287 | case CASE: |
ksrini@1346 | 2288 | case DEFAULT: |
ksrini@1346 | 2289 | cases.append(switchBlockStatementGroup()); |
duke@1 | 2290 | break; |
duke@1 | 2291 | case RBRACE: case EOF: |
duke@1 | 2292 | return cases.toList(); |
duke@1 | 2293 | default: |
mcimadamore@1113 | 2294 | nextToken(); // to ensure progress |
duke@1 | 2295 | syntaxError(pos, "expected3", |
mcimadamore@80 | 2296 | CASE, DEFAULT, RBRACE); |
duke@1 | 2297 | } |
duke@1 | 2298 | } |
duke@1 | 2299 | } |
duke@1 | 2300 | |
ksrini@1346 | 2301 | protected JCCase switchBlockStatementGroup() { |
ksrini@1346 | 2302 | int pos = token.pos; |
ksrini@1346 | 2303 | List<JCStatement> stats; |
ksrini@1346 | 2304 | JCCase c; |
ksrini@1346 | 2305 | switch (token.kind) { |
ksrini@1346 | 2306 | case CASE: |
ksrini@1346 | 2307 | nextToken(); |
ksrini@1346 | 2308 | JCExpression pat = parseExpression(); |
ksrini@1346 | 2309 | accept(COLON); |
ksrini@1346 | 2310 | stats = blockStatements(); |
ksrini@1346 | 2311 | c = F.at(pos).Case(pat, stats); |
ksrini@1346 | 2312 | if (stats.isEmpty()) |
ksrini@1346 | 2313 | storeEnd(c, S.prevToken().endPos); |
ksrini@1346 | 2314 | return c; |
ksrini@1346 | 2315 | case DEFAULT: |
ksrini@1346 | 2316 | nextToken(); |
ksrini@1346 | 2317 | accept(COLON); |
ksrini@1346 | 2318 | stats = blockStatements(); |
ksrini@1346 | 2319 | c = F.at(pos).Case(null, stats); |
ksrini@1346 | 2320 | if (stats.isEmpty()) |
ksrini@1346 | 2321 | storeEnd(c, S.prevToken().endPos); |
ksrini@1346 | 2322 | return c; |
ksrini@1346 | 2323 | } |
ksrini@1346 | 2324 | throw new AssertionError("should not reach here"); |
ksrini@1346 | 2325 | } |
ksrini@1346 | 2326 | |
duke@1 | 2327 | /** MoreStatementExpressions = { COMMA StatementExpression } |
duke@1 | 2328 | */ |
duke@1 | 2329 | <T extends ListBuffer<? super JCExpressionStatement>> T moreStatementExpressions(int pos, |
duke@1 | 2330 | JCExpression first, |
duke@1 | 2331 | T stats) { |
duke@1 | 2332 | // This Exec is a "StatementExpression"; it subsumes no terminating token |
duke@1 | 2333 | stats.append(toP(F.at(pos).Exec(checkExprStat(first)))); |
mcimadamore@1113 | 2334 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2335 | nextToken(); |
mcimadamore@1113 | 2336 | pos = token.pos; |
jjg@111 | 2337 | JCExpression t = parseExpression(); |
duke@1 | 2338 | // This Exec is a "StatementExpression"; it subsumes no terminating token |
duke@1 | 2339 | stats.append(toP(F.at(pos).Exec(checkExprStat(t)))); |
duke@1 | 2340 | } |
duke@1 | 2341 | return stats; |
duke@1 | 2342 | } |
duke@1 | 2343 | |
duke@1 | 2344 | /** ForInit = StatementExpression MoreStatementExpressions |
duke@1 | 2345 | * | { FINAL | '@' Annotation } Type VariableDeclarators |
duke@1 | 2346 | */ |
duke@1 | 2347 | List<JCStatement> forInit() { |
duke@1 | 2348 | ListBuffer<JCStatement> stats = lb(); |
mcimadamore@1113 | 2349 | int pos = token.pos; |
mcimadamore@1113 | 2350 | if (token.kind == FINAL || token.kind == MONKEYS_AT) { |
jjg@111 | 2351 | return variableDeclarators(optFinal(0), parseType(), stats).toList(); |
duke@1 | 2352 | } else { |
duke@1 | 2353 | JCExpression t = term(EXPR | TYPE); |
duke@1 | 2354 | if ((lastmode & TYPE) != 0 && |
ksrini@1259 | 2355 | (token.kind == IDENTIFIER || token.kind == ASSERT || |
ksrini@1259 | 2356 | token.kind == ENUM)) { |
duke@1 | 2357 | return variableDeclarators(modifiersOpt(), t, stats).toList(); |
ksrini@1259 | 2358 | } else if ((lastmode & TYPE) != 0 && token.kind == COLON) { |
ksrini@1259 | 2359 | error(pos, "bad.initializer", "for-loop"); |
ksrini@1259 | 2360 | return List.of((JCStatement)F.at(pos).VarDef(null, null, t, null)); |
ksrini@1259 | 2361 | } else { |
duke@1 | 2362 | return moreStatementExpressions(pos, t, stats).toList(); |
ksrini@1259 | 2363 | } |
duke@1 | 2364 | } |
duke@1 | 2365 | } |
duke@1 | 2366 | |
duke@1 | 2367 | /** ForUpdate = StatementExpression MoreStatementExpressions |
duke@1 | 2368 | */ |
duke@1 | 2369 | List<JCExpressionStatement> forUpdate() { |
mcimadamore@1113 | 2370 | return moreStatementExpressions(token.pos, |
jjg@111 | 2371 | parseExpression(), |
duke@1 | 2372 | new ListBuffer<JCExpressionStatement>()).toList(); |
duke@1 | 2373 | } |
duke@1 | 2374 | |
duke@1 | 2375 | /** AnnotationsOpt = { '@' Annotation } |
duke@1 | 2376 | */ |
jjg@722 | 2377 | List<JCAnnotation> annotationsOpt() { |
mcimadamore@1113 | 2378 | if (token.kind != MONKEYS_AT) return List.nil(); // optimization |
duke@1 | 2379 | ListBuffer<JCAnnotation> buf = new ListBuffer<JCAnnotation>(); |
mcimadamore@1113 | 2380 | while (token.kind == MONKEYS_AT) { |
mcimadamore@1113 | 2381 | int pos = token.pos; |
mcimadamore@1113 | 2382 | nextToken(); |
jjg@722 | 2383 | buf.append(annotation(pos)); |
duke@1 | 2384 | } |
jjg@722 | 2385 | return buf.toList(); |
duke@1 | 2386 | } |
duke@1 | 2387 | |
duke@1 | 2388 | /** ModifiersOpt = { Modifier } |
duke@1 | 2389 | * Modifier = PUBLIC | PROTECTED | PRIVATE | STATIC | ABSTRACT | FINAL |
duke@1 | 2390 | * | NATIVE | SYNCHRONIZED | TRANSIENT | VOLATILE | "@" |
duke@1 | 2391 | * | "@" Annotation |
duke@1 | 2392 | */ |
duke@1 | 2393 | JCModifiers modifiersOpt() { |
duke@1 | 2394 | return modifiersOpt(null); |
duke@1 | 2395 | } |
ksrini@1074 | 2396 | protected JCModifiers modifiersOpt(JCModifiers partial) { |
jjg@482 | 2397 | long flags; |
jjg@482 | 2398 | ListBuffer<JCAnnotation> annotations = new ListBuffer<JCAnnotation>(); |
jjg@482 | 2399 | int pos; |
jjg@482 | 2400 | if (partial == null) { |
jjg@482 | 2401 | flags = 0; |
mcimadamore@1113 | 2402 | pos = token.pos; |
jjg@482 | 2403 | } else { |
jjg@482 | 2404 | flags = partial.flags; |
jjg@482 | 2405 | annotations.appendList(partial.annotations); |
jjg@482 | 2406 | pos = partial.pos; |
jjg@482 | 2407 | } |
mcimadamore@1125 | 2408 | if (token.deprecatedFlag()) { |
duke@1 | 2409 | flags |= Flags.DEPRECATED; |
duke@1 | 2410 | } |
duke@1 | 2411 | int lastPos = Position.NOPOS; |
duke@1 | 2412 | loop: |
duke@1 | 2413 | while (true) { |
duke@1 | 2414 | long flag; |
mcimadamore@1113 | 2415 | switch (token.kind) { |
duke@1 | 2416 | case PRIVATE : flag = Flags.PRIVATE; break; |
duke@1 | 2417 | case PROTECTED : flag = Flags.PROTECTED; break; |
duke@1 | 2418 | case PUBLIC : flag = Flags.PUBLIC; break; |
duke@1 | 2419 | case STATIC : flag = Flags.STATIC; break; |
duke@1 | 2420 | case TRANSIENT : flag = Flags.TRANSIENT; break; |
duke@1 | 2421 | case FINAL : flag = Flags.FINAL; break; |
duke@1 | 2422 | case ABSTRACT : flag = Flags.ABSTRACT; break; |
duke@1 | 2423 | case NATIVE : flag = Flags.NATIVE; break; |
duke@1 | 2424 | case VOLATILE : flag = Flags.VOLATILE; break; |
duke@1 | 2425 | case SYNCHRONIZED: flag = Flags.SYNCHRONIZED; break; |
duke@1 | 2426 | case STRICTFP : flag = Flags.STRICTFP; break; |
duke@1 | 2427 | case MONKEYS_AT : flag = Flags.ANNOTATION; break; |
mcimadamore@1366 | 2428 | case DEFAULT : checkDefaultMethods(); flag = Flags.DEFAULT; break; |
mcimadamore@1113 | 2429 | case ERROR : flag = 0; nextToken(); break; |
duke@1 | 2430 | default: break loop; |
duke@1 | 2431 | } |
mcimadamore@1113 | 2432 | if ((flags & flag) != 0) error(token.pos, "repeated.modifier"); |
mcimadamore@1113 | 2433 | lastPos = token.pos; |
mcimadamore@1113 | 2434 | nextToken(); |
duke@1 | 2435 | if (flag == Flags.ANNOTATION) { |
duke@1 | 2436 | checkAnnotations(); |
mcimadamore@1113 | 2437 | if (token.kind != INTERFACE) { |
jjg@722 | 2438 | JCAnnotation ann = annotation(lastPos); |
jjg@482 | 2439 | // if first modifier is an annotation, set pos to annotation's. |
jjg@482 | 2440 | if (flags == 0 && annotations.isEmpty()) |
jjg@482 | 2441 | pos = ann.pos; |
jjg@482 | 2442 | annotations.append(ann); |
jjg@482 | 2443 | lastPos = ann.pos; |
duke@1 | 2444 | flag = 0; |
duke@1 | 2445 | } |
duke@1 | 2446 | } |
duke@1 | 2447 | flags |= flag; |
duke@1 | 2448 | } |
mcimadamore@1113 | 2449 | switch (token.kind) { |
duke@1 | 2450 | case ENUM: flags |= Flags.ENUM; break; |
duke@1 | 2451 | case INTERFACE: flags |= Flags.INTERFACE; break; |
duke@1 | 2452 | default: break; |
duke@1 | 2453 | } |
duke@1 | 2454 | |
duke@1 | 2455 | /* A modifiers tree with no modifier tokens or annotations |
duke@1 | 2456 | * has no text position. */ |
jjg@613 | 2457 | if ((flags & (Flags.ModifierFlags | Flags.ANNOTATION)) == 0 && annotations.isEmpty()) |
duke@1 | 2458 | pos = Position.NOPOS; |
duke@1 | 2459 | |
duke@1 | 2460 | JCModifiers mods = F.at(pos).Modifiers(flags, annotations.toList()); |
duke@1 | 2461 | if (pos != Position.NOPOS) |
mcimadamore@1113 | 2462 | storeEnd(mods, S.prevToken().endPos); |
duke@1 | 2463 | return mods; |
duke@1 | 2464 | } |
duke@1 | 2465 | |
duke@1 | 2466 | /** Annotation = "@" Qualident [ "(" AnnotationFieldValues ")" ] |
duke@1 | 2467 | * @param pos position of "@" token |
duke@1 | 2468 | */ |
jjg@722 | 2469 | JCAnnotation annotation(int pos) { |
duke@1 | 2470 | // accept(AT); // AT consumed by caller |
duke@1 | 2471 | checkAnnotations(); |
duke@1 | 2472 | JCTree ident = qualident(); |
duke@1 | 2473 | List<JCExpression> fieldValues = annotationFieldValuesOpt(); |
jjg@722 | 2474 | JCAnnotation ann = F.at(pos).Annotation(ident, fieldValues); |
mcimadamore@1113 | 2475 | storeEnd(ann, S.prevToken().endPos); |
duke@1 | 2476 | return ann; |
duke@1 | 2477 | } |
duke@1 | 2478 | |
duke@1 | 2479 | List<JCExpression> annotationFieldValuesOpt() { |
mcimadamore@1113 | 2480 | return (token.kind == LPAREN) ? annotationFieldValues() : List.<JCExpression>nil(); |
duke@1 | 2481 | } |
duke@1 | 2482 | |
duke@1 | 2483 | /** AnnotationFieldValues = "(" [ AnnotationFieldValue { "," AnnotationFieldValue } ] ")" */ |
duke@1 | 2484 | List<JCExpression> annotationFieldValues() { |
duke@1 | 2485 | accept(LPAREN); |
duke@1 | 2486 | ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 2487 | if (token.kind != RPAREN) { |
duke@1 | 2488 | buf.append(annotationFieldValue()); |
mcimadamore@1113 | 2489 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2490 | nextToken(); |
duke@1 | 2491 | buf.append(annotationFieldValue()); |
duke@1 | 2492 | } |
duke@1 | 2493 | } |
duke@1 | 2494 | accept(RPAREN); |
duke@1 | 2495 | return buf.toList(); |
duke@1 | 2496 | } |
duke@1 | 2497 | |
duke@1 | 2498 | /** AnnotationFieldValue = AnnotationValue |
duke@1 | 2499 | * | Identifier "=" AnnotationValue |
duke@1 | 2500 | */ |
duke@1 | 2501 | JCExpression annotationFieldValue() { |
mcimadamore@1113 | 2502 | if (token.kind == IDENTIFIER) { |
duke@1 | 2503 | mode = EXPR; |
duke@1 | 2504 | JCExpression t1 = term1(); |
jjg@1127 | 2505 | if (t1.hasTag(IDENT) && token.kind == EQ) { |
mcimadamore@1113 | 2506 | int pos = token.pos; |
duke@1 | 2507 | accept(EQ); |
jjg@482 | 2508 | JCExpression v = annotationValue(); |
jjg@482 | 2509 | return toP(F.at(pos).Assign(t1, v)); |
duke@1 | 2510 | } else { |
duke@1 | 2511 | return t1; |
duke@1 | 2512 | } |
duke@1 | 2513 | } |
duke@1 | 2514 | return annotationValue(); |
duke@1 | 2515 | } |
duke@1 | 2516 | |
duke@1 | 2517 | /* AnnotationValue = ConditionalExpression |
duke@1 | 2518 | * | Annotation |
darcy@417 | 2519 | * | "{" [ AnnotationValue { "," AnnotationValue } ] [","] "}" |
duke@1 | 2520 | */ |
duke@1 | 2521 | JCExpression annotationValue() { |
duke@1 | 2522 | int pos; |
mcimadamore@1113 | 2523 | switch (token.kind) { |
duke@1 | 2524 | case MONKEYS_AT: |
mcimadamore@1113 | 2525 | pos = token.pos; |
mcimadamore@1113 | 2526 | nextToken(); |
jjg@722 | 2527 | return annotation(pos); |
duke@1 | 2528 | case LBRACE: |
mcimadamore@1113 | 2529 | pos = token.pos; |
duke@1 | 2530 | accept(LBRACE); |
duke@1 | 2531 | ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 2532 | if (token.kind != RBRACE) { |
duke@1 | 2533 | buf.append(annotationValue()); |
mcimadamore@1113 | 2534 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2535 | nextToken(); |
mcimadamore@1113 | 2536 | if (token.kind == RBRACE) break; |
duke@1 | 2537 | buf.append(annotationValue()); |
duke@1 | 2538 | } |
duke@1 | 2539 | } |
duke@1 | 2540 | accept(RBRACE); |
duke@1 | 2541 | return toP(F.at(pos).NewArray(null, List.<JCExpression>nil(), buf.toList())); |
duke@1 | 2542 | default: |
duke@1 | 2543 | mode = EXPR; |
duke@1 | 2544 | return term1(); |
duke@1 | 2545 | } |
duke@1 | 2546 | } |
duke@1 | 2547 | |
duke@1 | 2548 | /** VariableDeclarators = VariableDeclarator { "," VariableDeclarator } |
duke@1 | 2549 | */ |
duke@1 | 2550 | public <T extends ListBuffer<? super JCVariableDecl>> T variableDeclarators(JCModifiers mods, |
duke@1 | 2551 | JCExpression type, |
duke@1 | 2552 | T vdefs) |
duke@1 | 2553 | { |
mcimadamore@1113 | 2554 | return variableDeclaratorsRest(token.pos, mods, type, ident(), false, null, vdefs); |
duke@1 | 2555 | } |
duke@1 | 2556 | |
duke@1 | 2557 | /** VariableDeclaratorsRest = VariableDeclaratorRest { "," VariableDeclarator } |
duke@1 | 2558 | * ConstantDeclaratorsRest = ConstantDeclaratorRest { "," ConstantDeclarator } |
duke@1 | 2559 | * |
duke@1 | 2560 | * @param reqInit Is an initializer always required? |
duke@1 | 2561 | * @param dc The documentation comment for the variable declarations, or null. |
duke@1 | 2562 | */ |
duke@1 | 2563 | <T extends ListBuffer<? super JCVariableDecl>> T variableDeclaratorsRest(int pos, |
duke@1 | 2564 | JCModifiers mods, |
duke@1 | 2565 | JCExpression type, |
duke@1 | 2566 | Name name, |
duke@1 | 2567 | boolean reqInit, |
jjg@1280 | 2568 | Comment dc, |
duke@1 | 2569 | T vdefs) |
duke@1 | 2570 | { |
duke@1 | 2571 | vdefs.append(variableDeclaratorRest(pos, mods, type, name, reqInit, dc)); |
mcimadamore@1113 | 2572 | while (token.kind == COMMA) { |
duke@1 | 2573 | // All but last of multiple declarators subsume a comma |
jlahoda@1444 | 2574 | storeEnd((JCTree)vdefs.last(), token.endPos); |
mcimadamore@1113 | 2575 | nextToken(); |
duke@1 | 2576 | vdefs.append(variableDeclarator(mods, type, reqInit, dc)); |
duke@1 | 2577 | } |
duke@1 | 2578 | return vdefs; |
duke@1 | 2579 | } |
duke@1 | 2580 | |
duke@1 | 2581 | /** VariableDeclarator = Ident VariableDeclaratorRest |
duke@1 | 2582 | * ConstantDeclarator = Ident ConstantDeclaratorRest |
duke@1 | 2583 | */ |
jjg@1280 | 2584 | JCVariableDecl variableDeclarator(JCModifiers mods, JCExpression type, boolean reqInit, Comment dc) { |
mcimadamore@1113 | 2585 | return variableDeclaratorRest(token.pos, mods, type, ident(), reqInit, dc); |
duke@1 | 2586 | } |
duke@1 | 2587 | |
duke@1 | 2588 | /** VariableDeclaratorRest = BracketsOpt ["=" VariableInitializer] |
duke@1 | 2589 | * ConstantDeclaratorRest = BracketsOpt "=" VariableInitializer |
duke@1 | 2590 | * |
duke@1 | 2591 | * @param reqInit Is an initializer always required? |
duke@1 | 2592 | * @param dc The documentation comment for the variable declarations, or null. |
duke@1 | 2593 | */ |
duke@1 | 2594 | JCVariableDecl variableDeclaratorRest(int pos, JCModifiers mods, JCExpression type, Name name, |
jjg@1280 | 2595 | boolean reqInit, Comment dc) { |
duke@1 | 2596 | type = bracketsOpt(type); |
duke@1 | 2597 | JCExpression init = null; |
mcimadamore@1113 | 2598 | if (token.kind == EQ) { |
mcimadamore@1113 | 2599 | nextToken(); |
duke@1 | 2600 | init = variableInitializer(); |
duke@1 | 2601 | } |
mcimadamore@1113 | 2602 | else if (reqInit) syntaxError(token.pos, "expected", EQ); |
duke@1 | 2603 | JCVariableDecl result = |
duke@1 | 2604 | toP(F.at(pos).VarDef(mods, name, type, init)); |
duke@1 | 2605 | attach(result, dc); |
duke@1 | 2606 | return result; |
duke@1 | 2607 | } |
duke@1 | 2608 | |
duke@1 | 2609 | /** VariableDeclaratorId = Ident BracketsOpt |
duke@1 | 2610 | */ |
duke@1 | 2611 | JCVariableDecl variableDeclaratorId(JCModifiers mods, JCExpression type) { |
mcimadamore@1113 | 2612 | int pos = token.pos; |
duke@1 | 2613 | Name name = ident(); |
mcimadamore@831 | 2614 | if ((mods.flags & Flags.VARARGS) != 0 && |
mcimadamore@1113 | 2615 | token.kind == LBRACKET) { |
mcimadamore@1113 | 2616 | log.error(token.pos, "varargs.and.old.array.syntax"); |
mcimadamore@831 | 2617 | } |
mcimadamore@831 | 2618 | type = bracketsOpt(type); |
duke@1 | 2619 | return toP(F.at(pos).VarDef(mods, name, type, null)); |
duke@1 | 2620 | } |
duke@1 | 2621 | |
darcy@609 | 2622 | /** Resources = Resource { ";" Resources } |
darcy@609 | 2623 | */ |
darcy@609 | 2624 | List<JCTree> resources() { |
darcy@609 | 2625 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
darcy@609 | 2626 | defs.append(resource()); |
mcimadamore@1113 | 2627 | while (token.kind == SEMI) { |
darcy@850 | 2628 | // All but last of multiple declarators must subsume a semicolon |
jlahoda@1444 | 2629 | storeEnd(defs.last(), token.endPos); |
mcimadamore@1113 | 2630 | int semiColonPos = token.pos; |
mcimadamore@1113 | 2631 | nextToken(); |
mcimadamore@1113 | 2632 | if (token.kind == RPAREN) { // Optional trailing semicolon |
darcy@840 | 2633 | // after last resource |
darcy@840 | 2634 | break; |
darcy@840 | 2635 | } |
darcy@609 | 2636 | defs.append(resource()); |
darcy@609 | 2637 | } |
darcy@609 | 2638 | return defs.toList(); |
darcy@609 | 2639 | } |
darcy@609 | 2640 | |
darcy@840 | 2641 | /** Resource = VariableModifiersOpt Type VariableDeclaratorId = Expression |
darcy@609 | 2642 | */ |
ksrini@1074 | 2643 | protected JCTree resource() { |
ksrini@1074 | 2644 | JCModifiers optFinal = optFinal(Flags.FINAL); |
ksrini@1074 | 2645 | JCExpression type = parseType(); |
mcimadamore@1113 | 2646 | int pos = token.pos; |
ksrini@1074 | 2647 | Name ident = ident(); |
ksrini@1074 | 2648 | return variableDeclaratorRest(pos, optFinal, type, ident, true, null); |
darcy@609 | 2649 | } |
darcy@609 | 2650 | |
duke@1 | 2651 | /** CompilationUnit = [ { "@" Annotation } PACKAGE Qualident ";"] {ImportDeclaration} {TypeDeclaration} |
duke@1 | 2652 | */ |
jjg@111 | 2653 | public JCTree.JCCompilationUnit parseCompilationUnit() { |
mcimadamore@1113 | 2654 | Token firstToken = token; |
duke@1 | 2655 | JCExpression pid = null; |
duke@1 | 2656 | JCModifiers mods = null; |
mcimadamore@1113 | 2657 | boolean consumedToplevelDoc = false; |
mcimadamore@1113 | 2658 | boolean seenImport = false; |
mcimadamore@1113 | 2659 | boolean seenPackage = false; |
duke@1 | 2660 | List<JCAnnotation> packageAnnotations = List.nil(); |
mcimadamore@1113 | 2661 | if (token.kind == MONKEYS_AT) |
duke@1 | 2662 | mods = modifiersOpt(); |
duke@1 | 2663 | |
mcimadamore@1113 | 2664 | if (token.kind == PACKAGE) { |
mcimadamore@1113 | 2665 | seenPackage = true; |
duke@1 | 2666 | if (mods != null) { |
duke@1 | 2667 | checkNoMods(mods.flags); |
duke@1 | 2668 | packageAnnotations = mods.annotations; |
duke@1 | 2669 | mods = null; |
duke@1 | 2670 | } |
mcimadamore@1113 | 2671 | nextToken(); |
duke@1 | 2672 | pid = qualident(); |
duke@1 | 2673 | accept(SEMI); |
duke@1 | 2674 | } |
duke@1 | 2675 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
jjg@111 | 2676 | boolean checkForImports = true; |
mcimadamore@1113 | 2677 | boolean firstTypeDecl = true; |
mcimadamore@1113 | 2678 | while (token.kind != EOF) { |
ksrini@1138 | 2679 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2680 | // error recovery |
duke@1 | 2681 | skip(checkForImports, false, false, false); |
mcimadamore@1113 | 2682 | if (token.kind == EOF) |
duke@1 | 2683 | break; |
duke@1 | 2684 | } |
mcimadamore@1113 | 2685 | if (checkForImports && mods == null && token.kind == IMPORT) { |
mcimadamore@1113 | 2686 | seenImport = true; |
duke@1 | 2687 | defs.append(importDeclaration()); |
duke@1 | 2688 | } else { |
jjg@1280 | 2689 | Comment docComment = token.comment(CommentStyle.JAVADOC); |
mcimadamore@1113 | 2690 | if (firstTypeDecl && !seenImport && !seenPackage) { |
mcimadamore@1125 | 2691 | docComment = firstToken.comment(CommentStyle.JAVADOC); |
mcimadamore@1113 | 2692 | consumedToplevelDoc = true; |
jjg@695 | 2693 | } |
mcimadamore@1113 | 2694 | JCTree def = typeDeclaration(mods, docComment); |
duke@1 | 2695 | if (def instanceof JCExpressionStatement) |
duke@1 | 2696 | def = ((JCExpressionStatement)def).expr; |
duke@1 | 2697 | defs.append(def); |
duke@1 | 2698 | if (def instanceof JCClassDecl) |
duke@1 | 2699 | checkForImports = false; |
duke@1 | 2700 | mods = null; |
mcimadamore@1113 | 2701 | firstTypeDecl = false; |
duke@1 | 2702 | } |
duke@1 | 2703 | } |
mcimadamore@1113 | 2704 | JCTree.JCCompilationUnit toplevel = F.at(firstToken.pos).TopLevel(packageAnnotations, pid, defs.toList()); |
mcimadamore@1113 | 2705 | if (!consumedToplevelDoc) |
mcimadamore@1125 | 2706 | attach(toplevel, firstToken.comment(CommentStyle.JAVADOC)); |
jlahoda@1444 | 2707 | if (defs.isEmpty()) |
mcimadamore@1113 | 2708 | storeEnd(toplevel, S.prevToken().endPos); |
jjg@111 | 2709 | if (keepDocComments) |
jjg@111 | 2710 | toplevel.docComments = docComments; |
jjg@111 | 2711 | if (keepLineMap) |
jjg@111 | 2712 | toplevel.lineMap = S.getLineMap(); |
ksrini@1138 | 2713 | toplevel.endPositions = this.endPosTable; |
duke@1 | 2714 | return toplevel; |
duke@1 | 2715 | } |
duke@1 | 2716 | |
duke@1 | 2717 | /** ImportDeclaration = IMPORT [ STATIC ] Ident { "." Ident } [ "." "*" ] ";" |
duke@1 | 2718 | */ |
duke@1 | 2719 | JCTree importDeclaration() { |
mcimadamore@1113 | 2720 | int pos = token.pos; |
mcimadamore@1113 | 2721 | nextToken(); |
duke@1 | 2722 | boolean importStatic = false; |
mcimadamore@1113 | 2723 | if (token.kind == STATIC) { |
duke@1 | 2724 | checkStaticImports(); |
duke@1 | 2725 | importStatic = true; |
mcimadamore@1113 | 2726 | nextToken(); |
duke@1 | 2727 | } |
mcimadamore@1113 | 2728 | JCExpression pid = toP(F.at(token.pos).Ident(ident())); |
duke@1 | 2729 | do { |
mcimadamore@1113 | 2730 | int pos1 = token.pos; |
duke@1 | 2731 | accept(DOT); |
mcimadamore@1113 | 2732 | if (token.kind == STAR) { |
duke@1 | 2733 | pid = to(F.at(pos1).Select(pid, names.asterisk)); |
mcimadamore@1113 | 2734 | nextToken(); |
duke@1 | 2735 | break; |
duke@1 | 2736 | } else { |
duke@1 | 2737 | pid = toP(F.at(pos1).Select(pid, ident())); |
duke@1 | 2738 | } |
mcimadamore@1113 | 2739 | } while (token.kind == DOT); |
duke@1 | 2740 | accept(SEMI); |
duke@1 | 2741 | return toP(F.at(pos).Import(pid, importStatic)); |
duke@1 | 2742 | } |
duke@1 | 2743 | |
duke@1 | 2744 | /** TypeDeclaration = ClassOrInterfaceOrEnumDeclaration |
duke@1 | 2745 | * | ";" |
duke@1 | 2746 | */ |
jjg@1280 | 2747 | JCTree typeDeclaration(JCModifiers mods, Comment docComment) { |
mcimadamore@1113 | 2748 | int pos = token.pos; |
mcimadamore@1113 | 2749 | if (mods == null && token.kind == SEMI) { |
mcimadamore@1113 | 2750 | nextToken(); |
duke@1 | 2751 | return toP(F.at(pos).Skip()); |
duke@1 | 2752 | } else { |
mcimadamore@1113 | 2753 | return classOrInterfaceOrEnumDeclaration(modifiersOpt(mods), docComment); |
duke@1 | 2754 | } |
duke@1 | 2755 | } |
duke@1 | 2756 | |
duke@1 | 2757 | /** ClassOrInterfaceOrEnumDeclaration = ModifiersOpt |
duke@1 | 2758 | * (ClassDeclaration | InterfaceDeclaration | EnumDeclaration) |
duke@1 | 2759 | * @param mods Any modifiers starting the class or interface declaration |
duke@1 | 2760 | * @param dc The documentation comment for the class, or null. |
duke@1 | 2761 | */ |
jjg@1280 | 2762 | JCStatement classOrInterfaceOrEnumDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2763 | if (token.kind == CLASS) { |
duke@1 | 2764 | return classDeclaration(mods, dc); |
mcimadamore@1113 | 2765 | } else if (token.kind == INTERFACE) { |
duke@1 | 2766 | return interfaceDeclaration(mods, dc); |
duke@1 | 2767 | } else if (allowEnums) { |
mcimadamore@1113 | 2768 | if (token.kind == ENUM) { |
duke@1 | 2769 | return enumDeclaration(mods, dc); |
duke@1 | 2770 | } else { |
mcimadamore@1113 | 2771 | int pos = token.pos; |
duke@1 | 2772 | List<JCTree> errs; |
mcimadamore@1113 | 2773 | if (token.kind == IDENTIFIER) { |
duke@1 | 2774 | errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident()))); |
mcimadamore@1113 | 2775 | setErrorEndPos(token.pos); |
duke@1 | 2776 | } else { |
duke@1 | 2777 | errs = List.<JCTree>of(mods); |
duke@1 | 2778 | } |
duke@1 | 2779 | return toP(F.Exec(syntaxError(pos, errs, "expected3", |
mcimadamore@80 | 2780 | CLASS, INTERFACE, ENUM))); |
duke@1 | 2781 | } |
duke@1 | 2782 | } else { |
mcimadamore@1113 | 2783 | if (token.kind == ENUM) { |
mcimadamore@1113 | 2784 | error(token.pos, "enums.not.supported.in.source", source.name); |
duke@1 | 2785 | allowEnums = true; |
duke@1 | 2786 | return enumDeclaration(mods, dc); |
duke@1 | 2787 | } |
mcimadamore@1113 | 2788 | int pos = token.pos; |
duke@1 | 2789 | List<JCTree> errs; |
mcimadamore@1113 | 2790 | if (token.kind == IDENTIFIER) { |
duke@1 | 2791 | errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident()))); |
mcimadamore@1113 | 2792 | setErrorEndPos(token.pos); |
duke@1 | 2793 | } else { |
duke@1 | 2794 | errs = List.<JCTree>of(mods); |
duke@1 | 2795 | } |
duke@1 | 2796 | return toP(F.Exec(syntaxError(pos, errs, "expected2", |
mcimadamore@80 | 2797 | CLASS, INTERFACE))); |
duke@1 | 2798 | } |
duke@1 | 2799 | } |
duke@1 | 2800 | |
duke@1 | 2801 | /** ClassDeclaration = CLASS Ident TypeParametersOpt [EXTENDS Type] |
duke@1 | 2802 | * [IMPLEMENTS TypeList] ClassBody |
duke@1 | 2803 | * @param mods The modifiers starting the class declaration |
duke@1 | 2804 | * @param dc The documentation comment for the class, or null. |
duke@1 | 2805 | */ |
jjg@1280 | 2806 | protected JCClassDecl classDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2807 | int pos = token.pos; |
duke@1 | 2808 | accept(CLASS); |
duke@1 | 2809 | Name name = ident(); |
duke@1 | 2810 | |
duke@1 | 2811 | List<JCTypeParameter> typarams = typeParametersOpt(); |
duke@1 | 2812 | |
jjg@904 | 2813 | JCExpression extending = null; |
mcimadamore@1113 | 2814 | if (token.kind == EXTENDS) { |
mcimadamore@1113 | 2815 | nextToken(); |
jjg@111 | 2816 | extending = parseType(); |
duke@1 | 2817 | } |
duke@1 | 2818 | List<JCExpression> implementing = List.nil(); |
mcimadamore@1113 | 2819 | if (token.kind == IMPLEMENTS) { |
mcimadamore@1113 | 2820 | nextToken(); |
duke@1 | 2821 | implementing = typeList(); |
duke@1 | 2822 | } |
duke@1 | 2823 | List<JCTree> defs = classOrInterfaceBody(name, false); |
duke@1 | 2824 | JCClassDecl result = toP(F.at(pos).ClassDef( |
duke@1 | 2825 | mods, name, typarams, extending, implementing, defs)); |
duke@1 | 2826 | attach(result, dc); |
duke@1 | 2827 | return result; |
duke@1 | 2828 | } |
duke@1 | 2829 | |
duke@1 | 2830 | /** InterfaceDeclaration = INTERFACE Ident TypeParametersOpt |
duke@1 | 2831 | * [EXTENDS TypeList] InterfaceBody |
duke@1 | 2832 | * @param mods The modifiers starting the interface declaration |
duke@1 | 2833 | * @param dc The documentation comment for the interface, or null. |
duke@1 | 2834 | */ |
jjg@1280 | 2835 | protected JCClassDecl interfaceDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2836 | int pos = token.pos; |
duke@1 | 2837 | accept(INTERFACE); |
duke@1 | 2838 | Name name = ident(); |
duke@1 | 2839 | |
duke@1 | 2840 | List<JCTypeParameter> typarams = typeParametersOpt(); |
duke@1 | 2841 | |
duke@1 | 2842 | List<JCExpression> extending = List.nil(); |
mcimadamore@1113 | 2843 | if (token.kind == EXTENDS) { |
mcimadamore@1113 | 2844 | nextToken(); |
duke@1 | 2845 | extending = typeList(); |
duke@1 | 2846 | } |
duke@1 | 2847 | List<JCTree> defs = classOrInterfaceBody(name, true); |
duke@1 | 2848 | JCClassDecl result = toP(F.at(pos).ClassDef( |
duke@1 | 2849 | mods, name, typarams, null, extending, defs)); |
duke@1 | 2850 | attach(result, dc); |
duke@1 | 2851 | return result; |
duke@1 | 2852 | } |
duke@1 | 2853 | |
duke@1 | 2854 | /** EnumDeclaration = ENUM Ident [IMPLEMENTS TypeList] EnumBody |
duke@1 | 2855 | * @param mods The modifiers starting the enum declaration |
duke@1 | 2856 | * @param dc The documentation comment for the enum, or null. |
duke@1 | 2857 | */ |
jjg@1280 | 2858 | protected JCClassDecl enumDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2859 | int pos = token.pos; |
duke@1 | 2860 | accept(ENUM); |
duke@1 | 2861 | Name name = ident(); |
duke@1 | 2862 | |
duke@1 | 2863 | List<JCExpression> implementing = List.nil(); |
mcimadamore@1113 | 2864 | if (token.kind == IMPLEMENTS) { |
mcimadamore@1113 | 2865 | nextToken(); |
duke@1 | 2866 | implementing = typeList(); |
duke@1 | 2867 | } |
duke@1 | 2868 | |
duke@1 | 2869 | List<JCTree> defs = enumBody(name); |
jjg@482 | 2870 | mods.flags |= Flags.ENUM; |
duke@1 | 2871 | JCClassDecl result = toP(F.at(pos). |
jjg@482 | 2872 | ClassDef(mods, name, List.<JCTypeParameter>nil(), |
duke@1 | 2873 | null, implementing, defs)); |
duke@1 | 2874 | attach(result, dc); |
duke@1 | 2875 | return result; |
duke@1 | 2876 | } |
duke@1 | 2877 | |
duke@1 | 2878 | /** EnumBody = "{" { EnumeratorDeclarationList } [","] |
duke@1 | 2879 | * [ ";" {ClassBodyDeclaration} ] "}" |
duke@1 | 2880 | */ |
duke@1 | 2881 | List<JCTree> enumBody(Name enumName) { |
duke@1 | 2882 | accept(LBRACE); |
duke@1 | 2883 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
mcimadamore@1113 | 2884 | if (token.kind == COMMA) { |
mcimadamore@1113 | 2885 | nextToken(); |
mcimadamore@1113 | 2886 | } else if (token.kind != RBRACE && token.kind != SEMI) { |
duke@1 | 2887 | defs.append(enumeratorDeclaration(enumName)); |
mcimadamore@1113 | 2888 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2889 | nextToken(); |
mcimadamore@1113 | 2890 | if (token.kind == RBRACE || token.kind == SEMI) break; |
duke@1 | 2891 | defs.append(enumeratorDeclaration(enumName)); |
duke@1 | 2892 | } |
mcimadamore@1113 | 2893 | if (token.kind != SEMI && token.kind != RBRACE) { |
mcimadamore@1113 | 2894 | defs.append(syntaxError(token.pos, "expected3", |
mcimadamore@80 | 2895 | COMMA, RBRACE, SEMI)); |
mcimadamore@1113 | 2896 | nextToken(); |
duke@1 | 2897 | } |
duke@1 | 2898 | } |
mcimadamore@1113 | 2899 | if (token.kind == SEMI) { |
mcimadamore@1113 | 2900 | nextToken(); |
mcimadamore@1113 | 2901 | while (token.kind != RBRACE && token.kind != EOF) { |
duke@1 | 2902 | defs.appendList(classOrInterfaceBodyDeclaration(enumName, |
duke@1 | 2903 | false)); |
ksrini@1138 | 2904 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2905 | // error recovery |
duke@1 | 2906 | skip(false, true, true, false); |
duke@1 | 2907 | } |
duke@1 | 2908 | } |
duke@1 | 2909 | } |
duke@1 | 2910 | accept(RBRACE); |
duke@1 | 2911 | return defs.toList(); |
duke@1 | 2912 | } |
duke@1 | 2913 | |
duke@1 | 2914 | /** EnumeratorDeclaration = AnnotationsOpt [TypeArguments] IDENTIFIER [ Arguments ] [ "{" ClassBody "}" ] |
duke@1 | 2915 | */ |
duke@1 | 2916 | JCTree enumeratorDeclaration(Name enumName) { |
jjg@1280 | 2917 | Comment dc = token.comment(CommentStyle.JAVADOC); |
duke@1 | 2918 | int flags = Flags.PUBLIC|Flags.STATIC|Flags.FINAL|Flags.ENUM; |
mcimadamore@1125 | 2919 | if (token.deprecatedFlag()) { |
duke@1 | 2920 | flags |= Flags.DEPRECATED; |
duke@1 | 2921 | } |
mcimadamore@1113 | 2922 | int pos = token.pos; |
jjg@722 | 2923 | List<JCAnnotation> annotations = annotationsOpt(); |
duke@1 | 2924 | JCModifiers mods = F.at(annotations.isEmpty() ? Position.NOPOS : pos).Modifiers(flags, annotations); |
duke@1 | 2925 | List<JCExpression> typeArgs = typeArgumentsOpt(); |
mcimadamore@1113 | 2926 | int identPos = token.pos; |
duke@1 | 2927 | Name name = ident(); |
mcimadamore@1113 | 2928 | int createPos = token.pos; |
mcimadamore@1113 | 2929 | List<JCExpression> args = (token.kind == LPAREN) |
duke@1 | 2930 | ? arguments() : List.<JCExpression>nil(); |
duke@1 | 2931 | JCClassDecl body = null; |
mcimadamore@1113 | 2932 | if (token.kind == LBRACE) { |
duke@1 | 2933 | JCModifiers mods1 = F.at(Position.NOPOS).Modifiers(Flags.ENUM | Flags.STATIC); |
duke@1 | 2934 | List<JCTree> defs = classOrInterfaceBody(names.empty, false); |
duke@1 | 2935 | body = toP(F.at(identPos).AnonymousClassDef(mods1, defs)); |
duke@1 | 2936 | } |
duke@1 | 2937 | if (args.isEmpty() && body == null) |
jjg@469 | 2938 | createPos = identPos; |
jjg@469 | 2939 | JCIdent ident = F.at(identPos).Ident(enumName); |
duke@1 | 2940 | JCNewClass create = F.at(createPos).NewClass(null, typeArgs, ident, args, body); |
jjg@469 | 2941 | if (createPos != identPos) |
mcimadamore@1113 | 2942 | storeEnd(create, S.prevToken().endPos); |
jjg@469 | 2943 | ident = F.at(identPos).Ident(enumName); |
duke@1 | 2944 | JCTree result = toP(F.at(pos).VarDef(mods, name, ident, create)); |
duke@1 | 2945 | attach(result, dc); |
duke@1 | 2946 | return result; |
duke@1 | 2947 | } |
duke@1 | 2948 | |
duke@1 | 2949 | /** TypeList = Type {"," Type} |
duke@1 | 2950 | */ |
duke@1 | 2951 | List<JCExpression> typeList() { |
duke@1 | 2952 | ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>(); |
jjg@111 | 2953 | ts.append(parseType()); |
mcimadamore@1113 | 2954 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2955 | nextToken(); |
jjg@111 | 2956 | ts.append(parseType()); |
duke@1 | 2957 | } |
duke@1 | 2958 | return ts.toList(); |
duke@1 | 2959 | } |
duke@1 | 2960 | |
duke@1 | 2961 | /** ClassBody = "{" {ClassBodyDeclaration} "}" |
duke@1 | 2962 | * InterfaceBody = "{" {InterfaceBodyDeclaration} "}" |
duke@1 | 2963 | */ |
duke@1 | 2964 | List<JCTree> classOrInterfaceBody(Name className, boolean isInterface) { |
duke@1 | 2965 | accept(LBRACE); |
ksrini@1138 | 2966 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2967 | // error recovery |
duke@1 | 2968 | skip(false, true, false, false); |
mcimadamore@1113 | 2969 | if (token.kind == LBRACE) |
mcimadamore@1113 | 2970 | nextToken(); |
duke@1 | 2971 | } |
duke@1 | 2972 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
mcimadamore@1113 | 2973 | while (token.kind != RBRACE && token.kind != EOF) { |
duke@1 | 2974 | defs.appendList(classOrInterfaceBodyDeclaration(className, isInterface)); |
ksrini@1138 | 2975 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2976 | // error recovery |
duke@1 | 2977 | skip(false, true, true, false); |
duke@1 | 2978 | } |
duke@1 | 2979 | } |
duke@1 | 2980 | accept(RBRACE); |
duke@1 | 2981 | return defs.toList(); |
duke@1 | 2982 | } |
duke@1 | 2983 | |
duke@1 | 2984 | /** ClassBodyDeclaration = |
duke@1 | 2985 | * ";" |
duke@1 | 2986 | * | [STATIC] Block |
duke@1 | 2987 | * | ModifiersOpt |
duke@1 | 2988 | * ( Type Ident |
duke@1 | 2989 | * ( VariableDeclaratorsRest ";" | MethodDeclaratorRest ) |
duke@1 | 2990 | * | VOID Ident MethodDeclaratorRest |
duke@1 | 2991 | * | TypeParameters (Type | VOID) Ident MethodDeclaratorRest |
duke@1 | 2992 | * | Ident ConstructorDeclaratorRest |
duke@1 | 2993 | * | TypeParameters Ident ConstructorDeclaratorRest |
duke@1 | 2994 | * | ClassOrInterfaceOrEnumDeclaration |
duke@1 | 2995 | * ) |
duke@1 | 2996 | * InterfaceBodyDeclaration = |
duke@1 | 2997 | * ";" |
duke@1 | 2998 | * | ModifiersOpt Type Ident |
duke@1 | 2999 | * ( ConstantDeclaratorsRest | InterfaceMethodDeclaratorRest ";" ) |
duke@1 | 3000 | */ |
ksrini@1074 | 3001 | protected List<JCTree> classOrInterfaceBodyDeclaration(Name className, boolean isInterface) { |
mcimadamore@1113 | 3002 | if (token.kind == SEMI) { |
mcimadamore@1113 | 3003 | nextToken(); |
jjg@667 | 3004 | return List.<JCTree>nil(); |
duke@1 | 3005 | } else { |
jjg@1280 | 3006 | Comment dc = token.comment(CommentStyle.JAVADOC); |
mcimadamore@1113 | 3007 | int pos = token.pos; |
duke@1 | 3008 | JCModifiers mods = modifiersOpt(); |
mcimadamore@1113 | 3009 | if (token.kind == CLASS || |
mcimadamore@1113 | 3010 | token.kind == INTERFACE || |
mcimadamore@1113 | 3011 | allowEnums && token.kind == ENUM) { |
duke@1 | 3012 | return List.<JCTree>of(classOrInterfaceOrEnumDeclaration(mods, dc)); |
mcimadamore@1113 | 3013 | } else if (token.kind == LBRACE && !isInterface && |
duke@1 | 3014 | (mods.flags & Flags.StandardFlags & ~Flags.STATIC) == 0 && |
duke@1 | 3015 | mods.annotations.isEmpty()) { |
duke@1 | 3016 | return List.<JCTree>of(block(pos, mods.flags)); |
duke@1 | 3017 | } else { |
mcimadamore@1113 | 3018 | pos = token.pos; |
duke@1 | 3019 | List<JCTypeParameter> typarams = typeParametersOpt(); |
jjg@817 | 3020 | // if there are type parameters but no modifiers, save the start |
jjg@817 | 3021 | // position of the method in the modifiers. |
jjg@817 | 3022 | if (typarams.nonEmpty() && mods.pos == Position.NOPOS) { |
jjg@817 | 3023 | mods.pos = pos; |
jjg@817 | 3024 | storeEnd(mods, pos); |
jjg@817 | 3025 | } |
mcimadamore@1113 | 3026 | Token tk = token; |
mcimadamore@1113 | 3027 | pos = token.pos; |
duke@1 | 3028 | JCExpression type; |
mcimadamore@1113 | 3029 | boolean isVoid = token.kind == VOID; |
duke@1 | 3030 | if (isVoid) { |
jjg@1374 | 3031 | type = to(F.at(pos).TypeIdent(TypeTag.VOID)); |
mcimadamore@1113 | 3032 | nextToken(); |
duke@1 | 3033 | } else { |
jjg@722 | 3034 | type = parseType(); |
duke@1 | 3035 | } |
jjg@1127 | 3036 | if (token.kind == LPAREN && !isInterface && type.hasTag(IDENT)) { |
mcimadamore@1113 | 3037 | if (isInterface || tk.name() != className) |
jjg@726 | 3038 | error(pos, "invalid.meth.decl.ret.type.req"); |
duke@1 | 3039 | return List.of(methodDeclaratorRest( |
duke@1 | 3040 | pos, mods, null, names.init, typarams, |
duke@1 | 3041 | isInterface, true, dc)); |
duke@1 | 3042 | } else { |
mcimadamore@1113 | 3043 | pos = token.pos; |
mcimadamore@1113 | 3044 | Name name = ident(); |
mcimadamore@1113 | 3045 | if (token.kind == LPAREN) { |
duke@1 | 3046 | return List.of(methodDeclaratorRest( |
duke@1 | 3047 | pos, mods, type, name, typarams, |
duke@1 | 3048 | isInterface, isVoid, dc)); |
duke@1 | 3049 | } else if (!isVoid && typarams.isEmpty()) { |
duke@1 | 3050 | List<JCTree> defs = |
duke@1 | 3051 | variableDeclaratorsRest(pos, mods, type, name, isInterface, dc, |
duke@1 | 3052 | new ListBuffer<JCTree>()).toList(); |
mcimadamore@1113 | 3053 | storeEnd(defs.last(), token.endPos); |
duke@1 | 3054 | accept(SEMI); |
duke@1 | 3055 | return defs; |
duke@1 | 3056 | } else { |
mcimadamore@1113 | 3057 | pos = token.pos; |
duke@1 | 3058 | List<JCTree> err = isVoid |
duke@1 | 3059 | ? List.<JCTree>of(toP(F.at(pos).MethodDef(mods, name, type, typarams, |
duke@1 | 3060 | List.<JCVariableDecl>nil(), List.<JCExpression>nil(), null, null))) |
duke@1 | 3061 | : null; |
mcimadamore@1113 | 3062 | return List.<JCTree>of(syntaxError(token.pos, err, "expected", LPAREN)); |
duke@1 | 3063 | } |
duke@1 | 3064 | } |
duke@1 | 3065 | } |
duke@1 | 3066 | } |
duke@1 | 3067 | } |
duke@1 | 3068 | |
duke@1 | 3069 | /** MethodDeclaratorRest = |
jjg@722 | 3070 | * FormalParameters BracketsOpt [Throws TypeList] ( MethodBody | [DEFAULT AnnotationValue] ";") |
duke@1 | 3071 | * VoidMethodDeclaratorRest = |
jjg@722 | 3072 | * FormalParameters [Throws TypeList] ( MethodBody | ";") |
duke@1 | 3073 | * InterfaceMethodDeclaratorRest = |
jjg@722 | 3074 | * FormalParameters BracketsOpt [THROWS TypeList] ";" |
duke@1 | 3075 | * VoidInterfaceMethodDeclaratorRest = |
jjg@722 | 3076 | * FormalParameters [THROWS TypeList] ";" |
duke@1 | 3077 | * ConstructorDeclaratorRest = |
jjg@722 | 3078 | * "(" FormalParameterListOpt ")" [THROWS TypeList] MethodBody |
duke@1 | 3079 | */ |
ksrini@1148 | 3080 | protected JCTree methodDeclaratorRest(int pos, |
duke@1 | 3081 | JCModifiers mods, |
duke@1 | 3082 | JCExpression type, |
duke@1 | 3083 | Name name, |
duke@1 | 3084 | List<JCTypeParameter> typarams, |
duke@1 | 3085 | boolean isInterface, boolean isVoid, |
jjg@1280 | 3086 | Comment dc) { |
duke@1 | 3087 | List<JCVariableDecl> params = formalParameters(); |
jjg@722 | 3088 | if (!isVoid) type = bracketsOpt(type); |
duke@1 | 3089 | List<JCExpression> thrown = List.nil(); |
mcimadamore@1113 | 3090 | if (token.kind == THROWS) { |
mcimadamore@1113 | 3091 | nextToken(); |
duke@1 | 3092 | thrown = qualidentList(); |
duke@1 | 3093 | } |
duke@1 | 3094 | JCBlock body = null; |
duke@1 | 3095 | JCExpression defaultValue; |
mcimadamore@1113 | 3096 | if (token.kind == LBRACE) { |
duke@1 | 3097 | body = block(); |
duke@1 | 3098 | defaultValue = null; |
duke@1 | 3099 | } else { |
mcimadamore@1113 | 3100 | if (token.kind == DEFAULT) { |
duke@1 | 3101 | accept(DEFAULT); |
duke@1 | 3102 | defaultValue = annotationValue(); |
duke@1 | 3103 | } else { |
duke@1 | 3104 | defaultValue = null; |
duke@1 | 3105 | } |
duke@1 | 3106 | accept(SEMI); |
ksrini@1138 | 3107 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 3108 | // error recovery |
duke@1 | 3109 | skip(false, true, false, false); |
mcimadamore@1113 | 3110 | if (token.kind == LBRACE) { |
duke@1 | 3111 | body = block(); |
duke@1 | 3112 | } |
duke@1 | 3113 | } |
duke@1 | 3114 | } |
jjg@482 | 3115 | |
duke@1 | 3116 | JCMethodDecl result = |
duke@1 | 3117 | toP(F.at(pos).MethodDef(mods, name, type, typarams, |
jjg@722 | 3118 | params, thrown, |
duke@1 | 3119 | body, defaultValue)); |
duke@1 | 3120 | attach(result, dc); |
duke@1 | 3121 | return result; |
duke@1 | 3122 | } |
duke@1 | 3123 | |
jjg@722 | 3124 | /** QualidentList = Qualident {"," Qualident} |
duke@1 | 3125 | */ |
duke@1 | 3126 | List<JCExpression> qualidentList() { |
duke@1 | 3127 | ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>(); |
jjg@722 | 3128 | ts.append(qualident()); |
mcimadamore@1113 | 3129 | while (token.kind == COMMA) { |
mcimadamore@1113 | 3130 | nextToken(); |
jjg@722 | 3131 | ts.append(qualident()); |
duke@1 | 3132 | } |
duke@1 | 3133 | return ts.toList(); |
duke@1 | 3134 | } |
duke@1 | 3135 | |
jjg@1326 | 3136 | /** |
jjg@1326 | 3137 | * {@literal |
jjg@1326 | 3138 | * TypeParametersOpt = ["<" TypeParameter {"," TypeParameter} ">"] |
jjg@1326 | 3139 | * } |
duke@1 | 3140 | */ |
duke@1 | 3141 | List<JCTypeParameter> typeParametersOpt() { |
mcimadamore@1113 | 3142 | if (token.kind == LT) { |
duke@1 | 3143 | checkGenerics(); |
duke@1 | 3144 | ListBuffer<JCTypeParameter> typarams = new ListBuffer<JCTypeParameter>(); |
mcimadamore@1113 | 3145 | nextToken(); |
duke@1 | 3146 | typarams.append(typeParameter()); |
mcimadamore@1113 | 3147 | while (token.kind == COMMA) { |
mcimadamore@1113 | 3148 | nextToken(); |
duke@1 | 3149 | typarams.append(typeParameter()); |
duke@1 | 3150 | } |
duke@1 | 3151 | accept(GT); |
duke@1 | 3152 | return typarams.toList(); |
duke@1 | 3153 | } else { |
duke@1 | 3154 | return List.nil(); |
duke@1 | 3155 | } |
duke@1 | 3156 | } |
duke@1 | 3157 | |
jjg@1326 | 3158 | /** |
jjg@1326 | 3159 | * {@literal |
jjg@1326 | 3160 | * TypeParameter = TypeVariable [TypeParameterBound] |
duke@1 | 3161 | * TypeParameterBound = EXTENDS Type {"&" Type} |
duke@1 | 3162 | * TypeVariable = Ident |
jjg@1326 | 3163 | * } |
duke@1 | 3164 | */ |
duke@1 | 3165 | JCTypeParameter typeParameter() { |
mcimadamore@1113 | 3166 | int pos = token.pos; |
duke@1 | 3167 | Name name = ident(); |
duke@1 | 3168 | ListBuffer<JCExpression> bounds = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 3169 | if (token.kind == EXTENDS) { |
mcimadamore@1113 | 3170 | nextToken(); |
jjg@111 | 3171 | bounds.append(parseType()); |
mcimadamore@1113 | 3172 | while (token.kind == AMP) { |
mcimadamore@1113 | 3173 | nextToken(); |
jjg@111 | 3174 | bounds.append(parseType()); |
duke@1 | 3175 | } |
duke@1 | 3176 | } |
jjg@722 | 3177 | return toP(F.at(pos).TypeParameter(name, bounds.toList())); |
duke@1 | 3178 | } |
duke@1 | 3179 | |
duke@1 | 3180 | /** FormalParameters = "(" [ FormalParameterList ] ")" |
duke@1 | 3181 | * FormalParameterList = [ FormalParameterListNovarargs , ] LastFormalParameter |
duke@1 | 3182 | * FormalParameterListNovarargs = [ FormalParameterListNovarargs , ] FormalParameter |
duke@1 | 3183 | */ |
duke@1 | 3184 | List<JCVariableDecl> formalParameters() { |
duke@1 | 3185 | ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
duke@1 | 3186 | JCVariableDecl lastParam = null; |
duke@1 | 3187 | accept(LPAREN); |
mcimadamore@1113 | 3188 | if (token.kind != RPAREN) { |
duke@1 | 3189 | params.append(lastParam = formalParameter()); |
mcimadamore@1113 | 3190 | while ((lastParam.mods.flags & Flags.VARARGS) == 0 && token.kind == COMMA) { |
mcimadamore@1113 | 3191 | nextToken(); |
duke@1 | 3192 | params.append(lastParam = formalParameter()); |
duke@1 | 3193 | } |
duke@1 | 3194 | } |
duke@1 | 3195 | accept(RPAREN); |
duke@1 | 3196 | return params.toList(); |
duke@1 | 3197 | } |
duke@1 | 3198 | |
mcimadamore@1144 | 3199 | List<JCVariableDecl> implicitParameters(boolean hasParens) { |
mcimadamore@1144 | 3200 | if (hasParens) { |
mcimadamore@1144 | 3201 | accept(LPAREN); |
mcimadamore@1144 | 3202 | } |
mcimadamore@1144 | 3203 | ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
mcimadamore@1144 | 3204 | if (token.kind != RPAREN && token.kind != ARROW) { |
mcimadamore@1144 | 3205 | params.append(implicitParameter()); |
mcimadamore@1144 | 3206 | while (token.kind == COMMA) { |
mcimadamore@1144 | 3207 | nextToken(); |
mcimadamore@1144 | 3208 | params.append(implicitParameter()); |
mcimadamore@1144 | 3209 | } |
mcimadamore@1144 | 3210 | } |
mcimadamore@1144 | 3211 | if (hasParens) { |
mcimadamore@1144 | 3212 | accept(RPAREN); |
mcimadamore@1144 | 3213 | } |
mcimadamore@1144 | 3214 | return params.toList(); |
mcimadamore@1144 | 3215 | } |
mcimadamore@1144 | 3216 | |
duke@1 | 3217 | JCModifiers optFinal(long flags) { |
duke@1 | 3218 | JCModifiers mods = modifiersOpt(); |
duke@1 | 3219 | checkNoMods(mods.flags & ~(Flags.FINAL | Flags.DEPRECATED)); |
duke@1 | 3220 | mods.flags |= flags; |
duke@1 | 3221 | return mods; |
duke@1 | 3222 | } |
duke@1 | 3223 | |
duke@1 | 3224 | /** FormalParameter = { FINAL | '@' Annotation } Type VariableDeclaratorId |
duke@1 | 3225 | * LastFormalParameter = { FINAL | '@' Annotation } Type '...' Ident | FormalParameter |
duke@1 | 3226 | */ |
ksrini@1074 | 3227 | protected JCVariableDecl formalParameter() { |
duke@1 | 3228 | JCModifiers mods = optFinal(Flags.PARAMETER); |
jjg@111 | 3229 | JCExpression type = parseType(); |
mcimadamore@1113 | 3230 | if (token.kind == ELLIPSIS) { |
duke@1 | 3231 | checkVarargs(); |
duke@1 | 3232 | mods.flags |= Flags.VARARGS; |
mcimadamore@1113 | 3233 | type = to(F.at(token.pos).TypeArray(type)); |
mcimadamore@1113 | 3234 | nextToken(); |
duke@1 | 3235 | } |
duke@1 | 3236 | return variableDeclaratorId(mods, type); |
duke@1 | 3237 | } |
duke@1 | 3238 | |
mcimadamore@1144 | 3239 | protected JCVariableDecl implicitParameter() { |
mcimadamore@1144 | 3240 | JCModifiers mods = F.at(token.pos).Modifiers(Flags.PARAMETER); |
mcimadamore@1144 | 3241 | return variableDeclaratorId(mods, null); |
mcimadamore@1144 | 3242 | } |
mcimadamore@1144 | 3243 | |
duke@1 | 3244 | /* ---------- auxiliary methods -------------- */ |
duke@1 | 3245 | |
jjg@726 | 3246 | void error(int pos, String key, Object ... args) { |
jjg@726 | 3247 | log.error(DiagnosticFlag.SYNTAX, pos, key, args); |
jjg@726 | 3248 | } |
jjg@726 | 3249 | |
ksrini@1074 | 3250 | void error(DiagnosticPosition pos, String key, Object ... args) { |
ksrini@1074 | 3251 | log.error(DiagnosticFlag.SYNTAX, pos, key, args); |
ksrini@1074 | 3252 | } |
ksrini@1074 | 3253 | |
jjg@726 | 3254 | void warning(int pos, String key, Object ... args) { |
jjg@726 | 3255 | log.warning(pos, key, args); |
jjg@726 | 3256 | } |
jjg@726 | 3257 | |
duke@1 | 3258 | /** Check that given tree is a legal expression statement. |
duke@1 | 3259 | */ |
duke@1 | 3260 | protected JCExpression checkExprStat(JCExpression t) { |
mcimadamore@1433 | 3261 | if (!TreeInfo.isExpressionStatement(t)) { |
ksrini@1074 | 3262 | JCExpression ret = F.at(t.pos).Erroneous(List.<JCTree>of(t)); |
ksrini@1074 | 3263 | error(ret, "not.stmt"); |
ksrini@1074 | 3264 | return ret; |
mcimadamore@1433 | 3265 | } else { |
mcimadamore@1433 | 3266 | return t; |
duke@1 | 3267 | } |
duke@1 | 3268 | } |
duke@1 | 3269 | |
duke@1 | 3270 | /** Return precedence of operator represented by token, |
duke@1 | 3271 | * -1 if token is not a binary operator. @see TreeInfo.opPrec |
duke@1 | 3272 | */ |
mcimadamore@1113 | 3273 | static int prec(TokenKind token) { |
jjg@1127 | 3274 | JCTree.Tag oc = optag(token); |
jjg@1127 | 3275 | return (oc != NO_TAG) ? TreeInfo.opPrec(oc) : -1; |
duke@1 | 3276 | } |
duke@1 | 3277 | |
jjg@516 | 3278 | /** |
jjg@516 | 3279 | * Return the lesser of two positions, making allowance for either one |
jjg@516 | 3280 | * being unset. |
jjg@516 | 3281 | */ |
jjg@516 | 3282 | static int earlier(int pos1, int pos2) { |
jjg@516 | 3283 | if (pos1 == Position.NOPOS) |
jjg@516 | 3284 | return pos2; |
jjg@516 | 3285 | if (pos2 == Position.NOPOS) |
jjg@516 | 3286 | return pos1; |
jjg@516 | 3287 | return (pos1 < pos2 ? pos1 : pos2); |
jjg@516 | 3288 | } |
jjg@516 | 3289 | |
duke@1 | 3290 | /** Return operation tag of binary operator represented by token, |
jjg@1127 | 3291 | * No_TAG if token is not a binary operator. |
duke@1 | 3292 | */ |
jjg@1127 | 3293 | static JCTree.Tag optag(TokenKind token) { |
duke@1 | 3294 | switch (token) { |
duke@1 | 3295 | case BARBAR: |
jjg@1127 | 3296 | return OR; |
duke@1 | 3297 | case AMPAMP: |
jjg@1127 | 3298 | return AND; |
duke@1 | 3299 | case BAR: |
jjg@1127 | 3300 | return BITOR; |
duke@1 | 3301 | case BAREQ: |
jjg@1127 | 3302 | return BITOR_ASG; |
duke@1 | 3303 | case CARET: |
jjg@1127 | 3304 | return BITXOR; |
duke@1 | 3305 | case CARETEQ: |
jjg@1127 | 3306 | return BITXOR_ASG; |
duke@1 | 3307 | case AMP: |
jjg@1127 | 3308 | return BITAND; |
duke@1 | 3309 | case AMPEQ: |
jjg@1127 | 3310 | return BITAND_ASG; |
duke@1 | 3311 | case EQEQ: |
jjg@1127 | 3312 | return JCTree.Tag.EQ; |
duke@1 | 3313 | case BANGEQ: |
jjg@1127 | 3314 | return NE; |
duke@1 | 3315 | case LT: |
jjg@1127 | 3316 | return JCTree.Tag.LT; |
duke@1 | 3317 | case GT: |
jjg@1127 | 3318 | return JCTree.Tag.GT; |
duke@1 | 3319 | case LTEQ: |
jjg@1127 | 3320 | return LE; |
duke@1 | 3321 | case GTEQ: |
jjg@1127 | 3322 | return GE; |
duke@1 | 3323 | case LTLT: |
jjg@1127 | 3324 | return SL; |
duke@1 | 3325 | case LTLTEQ: |
jjg@1127 | 3326 | return SL_ASG; |
duke@1 | 3327 | case GTGT: |
jjg@1127 | 3328 | return SR; |
duke@1 | 3329 | case GTGTEQ: |
jjg@1127 | 3330 | return SR_ASG; |
duke@1 | 3331 | case GTGTGT: |
jjg@1127 | 3332 | return USR; |
duke@1 | 3333 | case GTGTGTEQ: |
jjg@1127 | 3334 | return USR_ASG; |
duke@1 | 3335 | case PLUS: |
jjg@1127 | 3336 | return JCTree.Tag.PLUS; |
duke@1 | 3337 | case PLUSEQ: |
jjg@1127 | 3338 | return PLUS_ASG; |
duke@1 | 3339 | case SUB: |
jjg@1127 | 3340 | return MINUS; |
duke@1 | 3341 | case SUBEQ: |
jjg@1127 | 3342 | return MINUS_ASG; |
duke@1 | 3343 | case STAR: |
jjg@1127 | 3344 | return MUL; |
duke@1 | 3345 | case STAREQ: |
jjg@1127 | 3346 | return MUL_ASG; |
duke@1 | 3347 | case SLASH: |
jjg@1127 | 3348 | return DIV; |
duke@1 | 3349 | case SLASHEQ: |
jjg@1127 | 3350 | return DIV_ASG; |
duke@1 | 3351 | case PERCENT: |
jjg@1127 | 3352 | return MOD; |
duke@1 | 3353 | case PERCENTEQ: |
jjg@1127 | 3354 | return MOD_ASG; |
duke@1 | 3355 | case INSTANCEOF: |
jjg@1127 | 3356 | return TYPETEST; |
duke@1 | 3357 | default: |
jjg@1127 | 3358 | return NO_TAG; |
duke@1 | 3359 | } |
duke@1 | 3360 | } |
duke@1 | 3361 | |
duke@1 | 3362 | /** Return operation tag of unary operator represented by token, |
jjg@1127 | 3363 | * No_TAG if token is not a binary operator. |
duke@1 | 3364 | */ |
jjg@1127 | 3365 | static JCTree.Tag unoptag(TokenKind token) { |
duke@1 | 3366 | switch (token) { |
duke@1 | 3367 | case PLUS: |
jjg@1127 | 3368 | return POS; |
duke@1 | 3369 | case SUB: |
jjg@1127 | 3370 | return NEG; |
duke@1 | 3371 | case BANG: |
jjg@1127 | 3372 | return NOT; |
duke@1 | 3373 | case TILDE: |
jjg@1127 | 3374 | return COMPL; |
duke@1 | 3375 | case PLUSPLUS: |
jjg@1127 | 3376 | return PREINC; |
duke@1 | 3377 | case SUBSUB: |
jjg@1127 | 3378 | return PREDEC; |
duke@1 | 3379 | default: |
jjg@1127 | 3380 | return NO_TAG; |
duke@1 | 3381 | } |
duke@1 | 3382 | } |
duke@1 | 3383 | |
duke@1 | 3384 | /** Return type tag of basic type represented by token, |
jjg@1374 | 3385 | * NONE if token is not a basic type identifier. |
duke@1 | 3386 | */ |
jjg@1374 | 3387 | static TypeTag typetag(TokenKind token) { |
duke@1 | 3388 | switch (token) { |
duke@1 | 3389 | case BYTE: |
jjg@1374 | 3390 | return TypeTag.BYTE; |
duke@1 | 3391 | case CHAR: |
jjg@1374 | 3392 | return TypeTag.CHAR; |
duke@1 | 3393 | case SHORT: |
jjg@1374 | 3394 | return TypeTag.SHORT; |
duke@1 | 3395 | case INT: |
jjg@1374 | 3396 | return TypeTag.INT; |
duke@1 | 3397 | case LONG: |
jjg@1374 | 3398 | return TypeTag.LONG; |
duke@1 | 3399 | case FLOAT: |
jjg@1374 | 3400 | return TypeTag.FLOAT; |
duke@1 | 3401 | case DOUBLE: |
jjg@1374 | 3402 | return TypeTag.DOUBLE; |
duke@1 | 3403 | case BOOLEAN: |
jjg@1374 | 3404 | return TypeTag.BOOLEAN; |
duke@1 | 3405 | default: |
jjg@1374 | 3406 | return TypeTag.NONE; |
duke@1 | 3407 | } |
duke@1 | 3408 | } |
duke@1 | 3409 | |
duke@1 | 3410 | void checkGenerics() { |
duke@1 | 3411 | if (!allowGenerics) { |
mcimadamore@1113 | 3412 | error(token.pos, "generics.not.supported.in.source", source.name); |
duke@1 | 3413 | allowGenerics = true; |
duke@1 | 3414 | } |
duke@1 | 3415 | } |
duke@1 | 3416 | void checkVarargs() { |
duke@1 | 3417 | if (!allowVarargs) { |
mcimadamore@1113 | 3418 | error(token.pos, "varargs.not.supported.in.source", source.name); |
duke@1 | 3419 | allowVarargs = true; |
duke@1 | 3420 | } |
duke@1 | 3421 | } |
duke@1 | 3422 | void checkForeach() { |
duke@1 | 3423 | if (!allowForeach) { |
mcimadamore@1113 | 3424 | error(token.pos, "foreach.not.supported.in.source", source.name); |
duke@1 | 3425 | allowForeach = true; |
duke@1 | 3426 | } |
duke@1 | 3427 | } |
duke@1 | 3428 | void checkStaticImports() { |
duke@1 | 3429 | if (!allowStaticImport) { |
mcimadamore@1113 | 3430 | error(token.pos, "static.import.not.supported.in.source", source.name); |
duke@1 | 3431 | allowStaticImport = true; |
duke@1 | 3432 | } |
duke@1 | 3433 | } |
duke@1 | 3434 | void checkAnnotations() { |
duke@1 | 3435 | if (!allowAnnotations) { |
mcimadamore@1113 | 3436 | error(token.pos, "annotations.not.supported.in.source", source.name); |
duke@1 | 3437 | allowAnnotations = true; |
duke@1 | 3438 | } |
duke@1 | 3439 | } |
mcimadamore@537 | 3440 | void checkDiamond() { |
mcimadamore@537 | 3441 | if (!allowDiamond) { |
mcimadamore@1113 | 3442 | error(token.pos, "diamond.not.supported.in.source", source.name); |
mcimadamore@537 | 3443 | allowDiamond = true; |
mcimadamore@537 | 3444 | } |
mcimadamore@537 | 3445 | } |
mcimadamore@550 | 3446 | void checkMulticatch() { |
mcimadamore@550 | 3447 | if (!allowMulticatch) { |
mcimadamore@1113 | 3448 | error(token.pos, "multicatch.not.supported.in.source", source.name); |
mcimadamore@550 | 3449 | allowMulticatch = true; |
darcy@609 | 3450 | } |
darcy@609 | 3451 | } |
mcimadamore@743 | 3452 | void checkTryWithResources() { |
darcy@609 | 3453 | if (!allowTWR) { |
mcimadamore@1113 | 3454 | error(token.pos, "try.with.resources.not.supported.in.source", source.name); |
darcy@609 | 3455 | allowTWR = true; |
darcy@609 | 3456 | } |
mcimadamore@550 | 3457 | } |
mcimadamore@1144 | 3458 | void checkLambda() { |
mcimadamore@1144 | 3459 | if (!allowLambda) { |
mcimadamore@1144 | 3460 | log.error(token.pos, "lambda.not.supported.in.source", source.name); |
mcimadamore@1144 | 3461 | allowLambda = true; |
mcimadamore@1144 | 3462 | } |
mcimadamore@1144 | 3463 | } |
mcimadamore@1145 | 3464 | void checkMethodReferences() { |
mcimadamore@1145 | 3465 | if (!allowMethodReferences) { |
mcimadamore@1145 | 3466 | log.error(token.pos, "method.references.not.supported.in.source", source.name); |
mcimadamore@1145 | 3467 | allowMethodReferences = true; |
mcimadamore@1145 | 3468 | } |
mcimadamore@1145 | 3469 | } |
mcimadamore@1366 | 3470 | void checkDefaultMethods() { |
mcimadamore@1366 | 3471 | if (!allowDefaultMethods) { |
mcimadamore@1366 | 3472 | log.error(token.pos, "default.methods.not.supported.in.source", source.name); |
mcimadamore@1366 | 3473 | allowDefaultMethods = true; |
mcimadamore@1366 | 3474 | } |
mcimadamore@1366 | 3475 | } |
mcimadamore@1436 | 3476 | void checkIntersectionTypesInCast() { |
mcimadamore@1436 | 3477 | if (!allowIntersectionTypesInCast) { |
mcimadamore@1436 | 3478 | log.error(token.pos, "intersection.types.in.cast.not.supported.in.source", source.name); |
mcimadamore@1436 | 3479 | allowIntersectionTypesInCast = true; |
mcimadamore@1436 | 3480 | } |
mcimadamore@1436 | 3481 | } |
ksrini@1138 | 3482 | |
ksrini@1138 | 3483 | /* |
ksrini@1138 | 3484 | * a functional source tree and end position mappings |
ksrini@1138 | 3485 | */ |
ksrini@1138 | 3486 | protected class SimpleEndPosTable extends AbstractEndPosTable { |
ksrini@1138 | 3487 | |
ksrini@1138 | 3488 | private final Map<JCTree, Integer> endPosMap; |
ksrini@1138 | 3489 | |
ksrini@1138 | 3490 | SimpleEndPosTable() { |
ksrini@1138 | 3491 | endPosMap = new HashMap<JCTree, Integer>(); |
ksrini@1138 | 3492 | } |
ksrini@1138 | 3493 | |
ksrini@1138 | 3494 | protected void storeEnd(JCTree tree, int endpos) { |
ksrini@1138 | 3495 | endPosMap.put(tree, errorEndPos > endpos ? errorEndPos : endpos); |
ksrini@1138 | 3496 | } |
ksrini@1138 | 3497 | |
ksrini@1138 | 3498 | protected <T extends JCTree> T to(T t) { |
ksrini@1138 | 3499 | storeEnd(t, token.endPos); |
ksrini@1138 | 3500 | return t; |
ksrini@1138 | 3501 | } |
ksrini@1138 | 3502 | |
ksrini@1138 | 3503 | protected <T extends JCTree> T toP(T t) { |
ksrini@1138 | 3504 | storeEnd(t, S.prevToken().endPos); |
ksrini@1138 | 3505 | return t; |
ksrini@1138 | 3506 | } |
ksrini@1138 | 3507 | |
ksrini@1138 | 3508 | public int getEndPos(JCTree tree) { |
ksrini@1138 | 3509 | Integer value = endPosMap.get(tree); |
ksrini@1138 | 3510 | return (value == null) ? Position.NOPOS : value; |
ksrini@1138 | 3511 | } |
ksrini@1138 | 3512 | |
ksrini@1138 | 3513 | public int replaceTree(JCTree oldTree, JCTree newTree) { |
ksrini@1138 | 3514 | Integer pos = endPosMap.remove(oldTree); |
ksrini@1138 | 3515 | if (pos != null) { |
ksrini@1138 | 3516 | endPosMap.put(newTree, pos); |
ksrini@1138 | 3517 | return pos; |
ksrini@1138 | 3518 | } |
ksrini@1138 | 3519 | return Position.NOPOS; |
ksrini@1138 | 3520 | } |
ksrini@1138 | 3521 | } |
ksrini@1138 | 3522 | |
ksrini@1138 | 3523 | /* |
ksrini@1138 | 3524 | * a default skeletal implementation without any mapping overhead. |
ksrini@1138 | 3525 | */ |
ksrini@1138 | 3526 | protected class EmptyEndPosTable extends AbstractEndPosTable { |
ksrini@1138 | 3527 | |
ksrini@1138 | 3528 | protected void storeEnd(JCTree tree, int endpos) { /* empty */ } |
ksrini@1138 | 3529 | |
ksrini@1138 | 3530 | protected <T extends JCTree> T to(T t) { |
ksrini@1138 | 3531 | return t; |
ksrini@1138 | 3532 | } |
ksrini@1138 | 3533 | |
ksrini@1138 | 3534 | protected <T extends JCTree> T toP(T t) { |
ksrini@1138 | 3535 | return t; |
ksrini@1138 | 3536 | } |
ksrini@1138 | 3537 | |
ksrini@1138 | 3538 | public int getEndPos(JCTree tree) { |
ksrini@1138 | 3539 | return Position.NOPOS; |
ksrini@1138 | 3540 | } |
ksrini@1138 | 3541 | |
ksrini@1138 | 3542 | public int replaceTree(JCTree oldTree, JCTree newTree) { |
ksrini@1138 | 3543 | return Position.NOPOS; |
ksrini@1138 | 3544 | } |
ksrini@1138 | 3545 | |
ksrini@1138 | 3546 | } |
ksrini@1138 | 3547 | |
ksrini@1138 | 3548 | protected abstract class AbstractEndPosTable implements EndPosTable { |
ksrini@1138 | 3549 | |
ksrini@1138 | 3550 | /** |
ksrini@1138 | 3551 | * Store the last error position. |
ksrini@1138 | 3552 | */ |
ksrini@1138 | 3553 | protected int errorEndPos; |
ksrini@1138 | 3554 | |
ksrini@1138 | 3555 | /** |
ksrini@1138 | 3556 | * Store ending position for a tree, the value of which is the greater |
ksrini@1138 | 3557 | * of last error position and the given ending position. |
ksrini@1138 | 3558 | * @param tree The tree. |
ksrini@1138 | 3559 | * @param endpos The ending position to associate with the tree. |
ksrini@1138 | 3560 | */ |
ksrini@1138 | 3561 | protected abstract void storeEnd(JCTree tree, int endpos); |
ksrini@1138 | 3562 | |
ksrini@1138 | 3563 | /** |
ksrini@1138 | 3564 | * Store current token's ending position for a tree, the value of which |
ksrini@1138 | 3565 | * will be the greater of last error position and the ending position of |
ksrini@1138 | 3566 | * the current token. |
ksrini@1138 | 3567 | * @param t The tree. |
ksrini@1138 | 3568 | */ |
ksrini@1138 | 3569 | protected abstract <T extends JCTree> T to(T t); |
ksrini@1138 | 3570 | |
ksrini@1138 | 3571 | /** |
ksrini@1138 | 3572 | * Store current token's ending position for a tree, the value of which |
ksrini@1138 | 3573 | * will be the greater of last error position and the ending position of |
ksrini@1138 | 3574 | * the previous token. |
ksrini@1138 | 3575 | * @param t The tree. |
ksrini@1138 | 3576 | */ |
ksrini@1138 | 3577 | protected abstract <T extends JCTree> T toP(T t); |
ksrini@1138 | 3578 | |
ksrini@1138 | 3579 | /** |
ksrini@1138 | 3580 | * Set the error position during the parsing phases, the value of which |
ksrini@1138 | 3581 | * will be set only if it is greater than the last stored error position. |
ksrini@1138 | 3582 | * @param errPos The error position |
ksrini@1138 | 3583 | */ |
ksrini@1138 | 3584 | protected void setErrorEndPos(int errPos) { |
ksrini@1138 | 3585 | if (errPos > errorEndPos) { |
ksrini@1138 | 3586 | errorEndPos = errPos; |
ksrini@1138 | 3587 | } |
ksrini@1138 | 3588 | } |
ksrini@1138 | 3589 | } |
duke@1 | 3590 | } |