Wed, 10 Oct 2012 18:44:21 -0700
8000310: Clean up use of StringBuffer in langtools
Reviewed-by: bpatel
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; |
duke@1 | 50 | import static com.sun.tools.javac.util.ListBuffer.lb; |
jjg@1127 | 51 | import static com.sun.tools.javac.tree.JCTree.Tag.*; |
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 | |
duke@1 | 91 | /** Construct a parser from a given scanner, tree factory and log. |
duke@1 | 92 | */ |
jjg@111 | 93 | protected JavacParser(ParserFactory fac, |
duke@1 | 94 | Lexer S, |
jjg@111 | 95 | boolean keepDocComments, |
ksrini@1138 | 96 | boolean keepLineMap, |
ksrini@1138 | 97 | boolean keepEndPositions) { |
duke@1 | 98 | this.S = S; |
mcimadamore@1113 | 99 | nextToken(); // prime the pump |
duke@1 | 100 | this.F = fac.F; |
duke@1 | 101 | this.log = fac.log; |
duke@1 | 102 | this.names = fac.names; |
duke@1 | 103 | this.source = fac.source; |
duke@1 | 104 | this.allowGenerics = source.allowGenerics(); |
duke@1 | 105 | this.allowVarargs = source.allowVarargs(); |
duke@1 | 106 | this.allowAsserts = source.allowAsserts(); |
duke@1 | 107 | this.allowEnums = source.allowEnums(); |
duke@1 | 108 | this.allowForeach = source.allowForeach(); |
duke@1 | 109 | this.allowStaticImport = source.allowStaticImport(); |
duke@1 | 110 | this.allowAnnotations = source.allowAnnotations(); |
darcy@609 | 111 | this.allowTWR = source.allowTryWithResources(); |
mcimadamore@537 | 112 | this.allowDiamond = source.allowDiamond(); |
mcimadamore@550 | 113 | this.allowMulticatch = source.allowMulticatch(); |
ksrini@1062 | 114 | this.allowStringFolding = fac.options.getBoolean("allowStringFolding", true); |
mcimadamore@1144 | 115 | this.allowLambda = source.allowLambda() && |
mcimadamore@1297 | 116 | fac.options.isSet("allowLambda"); //pre-lambda guard |
mcimadamore@1145 | 117 | this.allowMethodReferences = source.allowMethodReferences() && |
mcimadamore@1297 | 118 | fac.options.isSet("allowMethodReferences"); //pre-lambda guard |
duke@1 | 119 | this.keepDocComments = keepDocComments; |
jjg@1280 | 120 | docComments = newDocCommentTable(keepDocComments); |
jjg@111 | 121 | this.keepLineMap = keepLineMap; |
duke@1 | 122 | this.errorTree = F.Erroneous(); |
ksrini@1138 | 123 | endPosTable = newEndPosTable(keepEndPositions); |
duke@1 | 124 | } |
duke@1 | 125 | |
ksrini@1138 | 126 | protected AbstractEndPosTable newEndPosTable(boolean keepEndPositions) { |
ksrini@1138 | 127 | return keepEndPositions |
ksrini@1138 | 128 | ? new SimpleEndPosTable() |
ksrini@1138 | 129 | : new EmptyEndPosTable(); |
ksrini@1138 | 130 | } |
jjg@1280 | 131 | |
jjg@1280 | 132 | protected DocCommentTable newDocCommentTable(boolean keepDocComments) { |
jjg@1280 | 133 | return keepDocComments ? new SimpleDocCommentTable() : null; |
jjg@1280 | 134 | } |
jjg@1280 | 135 | |
duke@1 | 136 | /** Switch: Should generics be recognized? |
duke@1 | 137 | */ |
duke@1 | 138 | boolean allowGenerics; |
duke@1 | 139 | |
mcimadamore@537 | 140 | /** Switch: Should diamond operator be recognized? |
mcimadamore@537 | 141 | */ |
mcimadamore@537 | 142 | boolean allowDiamond; |
mcimadamore@537 | 143 | |
mcimadamore@550 | 144 | /** Switch: Should multicatch clause be accepted? |
mcimadamore@550 | 145 | */ |
mcimadamore@550 | 146 | boolean allowMulticatch; |
mcimadamore@550 | 147 | |
duke@1 | 148 | /** Switch: Should varargs be recognized? |
duke@1 | 149 | */ |
duke@1 | 150 | boolean allowVarargs; |
duke@1 | 151 | |
duke@1 | 152 | /** Switch: should we recognize assert statements, or just give a warning? |
duke@1 | 153 | */ |
duke@1 | 154 | boolean allowAsserts; |
duke@1 | 155 | |
duke@1 | 156 | /** Switch: should we recognize enums, or just give a warning? |
duke@1 | 157 | */ |
duke@1 | 158 | boolean allowEnums; |
duke@1 | 159 | |
duke@1 | 160 | /** Switch: should we recognize foreach? |
duke@1 | 161 | */ |
duke@1 | 162 | boolean allowForeach; |
duke@1 | 163 | |
duke@1 | 164 | /** Switch: should we recognize foreach? |
duke@1 | 165 | */ |
duke@1 | 166 | boolean allowStaticImport; |
duke@1 | 167 | |
duke@1 | 168 | /** Switch: should we recognize annotations? |
duke@1 | 169 | */ |
duke@1 | 170 | boolean allowAnnotations; |
duke@1 | 171 | |
darcy@840 | 172 | /** Switch: should we recognize try-with-resources? |
darcy@609 | 173 | */ |
darcy@609 | 174 | boolean allowTWR; |
darcy@609 | 175 | |
ksrini@1062 | 176 | /** Switch: should we fold strings? |
ksrini@1062 | 177 | */ |
ksrini@1062 | 178 | boolean allowStringFolding; |
ksrini@1062 | 179 | |
mcimadamore@1144 | 180 | /** Switch: should we recognize lambda expressions? |
mcimadamore@1144 | 181 | */ |
mcimadamore@1144 | 182 | boolean allowLambda; |
mcimadamore@1144 | 183 | |
mcimadamore@1145 | 184 | /** Switch: should we allow method/constructor references? |
mcimadamore@1145 | 185 | */ |
mcimadamore@1145 | 186 | boolean allowMethodReferences; |
mcimadamore@1145 | 187 | |
duke@1 | 188 | /** Switch: should we keep docComments? |
duke@1 | 189 | */ |
duke@1 | 190 | boolean keepDocComments; |
duke@1 | 191 | |
jjg@111 | 192 | /** Switch: should we keep line table? |
jjg@111 | 193 | */ |
jjg@111 | 194 | boolean keepLineMap; |
jjg@111 | 195 | |
duke@1 | 196 | /** When terms are parsed, the mode determines which is expected: |
duke@1 | 197 | * mode = EXPR : an expression |
duke@1 | 198 | * mode = TYPE : a type |
duke@1 | 199 | * mode = NOPARAMS : no parameters allowed for type |
duke@1 | 200 | * mode = TYPEARG : type argument |
duke@1 | 201 | */ |
mcimadamore@537 | 202 | static final int EXPR = 0x1; |
mcimadamore@537 | 203 | static final int TYPE = 0x2; |
mcimadamore@537 | 204 | static final int NOPARAMS = 0x4; |
mcimadamore@537 | 205 | static final int TYPEARG = 0x8; |
mcimadamore@537 | 206 | static final int DIAMOND = 0x10; |
duke@1 | 207 | |
duke@1 | 208 | /** The current mode. |
duke@1 | 209 | */ |
duke@1 | 210 | private int mode = 0; |
duke@1 | 211 | |
duke@1 | 212 | /** The mode of the term that was parsed last. |
duke@1 | 213 | */ |
duke@1 | 214 | private int lastmode = 0; |
duke@1 | 215 | |
mcimadamore@1113 | 216 | /* ---------- token management -------------- */ |
mcimadamore@1113 | 217 | |
mcimadamore@1113 | 218 | protected Token token; |
mcimadamore@1113 | 219 | |
mcimadamore@1113 | 220 | protected void nextToken() { |
mcimadamore@1113 | 221 | S.nextToken(); |
mcimadamore@1113 | 222 | token = S.token(); |
mcimadamore@1113 | 223 | } |
mcimadamore@1113 | 224 | |
mcimadamore@1144 | 225 | protected boolean peekToken(TokenKind tk) { |
mcimadamore@1144 | 226 | return S.token(1).kind == tk; |
mcimadamore@1144 | 227 | } |
mcimadamore@1144 | 228 | |
mcimadamore@1144 | 229 | protected boolean peekToken(TokenKind tk1, TokenKind tk2) { |
mcimadamore@1144 | 230 | return S.token(1).kind == tk1 && |
mcimadamore@1144 | 231 | S.token(2).kind == tk2; |
mcimadamore@1144 | 232 | } |
mcimadamore@1144 | 233 | |
mcimadamore@1144 | 234 | protected boolean peekToken(TokenKind tk1, TokenKind tk2, TokenKind tk3) { |
mcimadamore@1144 | 235 | return S.token(1).kind == tk1 && |
mcimadamore@1144 | 236 | S.token(2).kind == tk2 && |
mcimadamore@1144 | 237 | S.token(3).kind == tk3; |
mcimadamore@1144 | 238 | } |
mcimadamore@1144 | 239 | |
mcimadamore@1144 | 240 | protected boolean peekToken(TokenKind... kinds) { |
mcimadamore@1144 | 241 | for (int lookahead = 0 ; lookahead < kinds.length ; lookahead++) { |
mcimadamore@1144 | 242 | if (S.token(lookahead + 1).kind != kinds[lookahead]) { |
mcimadamore@1144 | 243 | return false; |
mcimadamore@1144 | 244 | } |
mcimadamore@1144 | 245 | } |
mcimadamore@1144 | 246 | return true; |
mcimadamore@1144 | 247 | } |
mcimadamore@1144 | 248 | |
mcimadamore@1113 | 249 | /* ---------- error recovery -------------- */ |
duke@1 | 250 | |
duke@1 | 251 | private JCErroneous errorTree; |
duke@1 | 252 | |
duke@1 | 253 | /** Skip forward until a suitable stop token is found. |
duke@1 | 254 | */ |
duke@1 | 255 | private void skip(boolean stopAtImport, boolean stopAtMemberDecl, boolean stopAtIdentifier, boolean stopAtStatement) { |
duke@1 | 256 | while (true) { |
mcimadamore@1113 | 257 | switch (token.kind) { |
duke@1 | 258 | case SEMI: |
mcimadamore@1113 | 259 | nextToken(); |
duke@1 | 260 | return; |
duke@1 | 261 | case PUBLIC: |
duke@1 | 262 | case FINAL: |
duke@1 | 263 | case ABSTRACT: |
duke@1 | 264 | case MONKEYS_AT: |
duke@1 | 265 | case EOF: |
duke@1 | 266 | case CLASS: |
duke@1 | 267 | case INTERFACE: |
duke@1 | 268 | case ENUM: |
duke@1 | 269 | return; |
duke@1 | 270 | case IMPORT: |
duke@1 | 271 | if (stopAtImport) |
duke@1 | 272 | return; |
duke@1 | 273 | break; |
duke@1 | 274 | case LBRACE: |
duke@1 | 275 | case RBRACE: |
duke@1 | 276 | case PRIVATE: |
duke@1 | 277 | case PROTECTED: |
duke@1 | 278 | case STATIC: |
duke@1 | 279 | case TRANSIENT: |
duke@1 | 280 | case NATIVE: |
duke@1 | 281 | case VOLATILE: |
duke@1 | 282 | case SYNCHRONIZED: |
duke@1 | 283 | case STRICTFP: |
duke@1 | 284 | case LT: |
duke@1 | 285 | case BYTE: |
duke@1 | 286 | case SHORT: |
duke@1 | 287 | case CHAR: |
duke@1 | 288 | case INT: |
duke@1 | 289 | case LONG: |
duke@1 | 290 | case FLOAT: |
duke@1 | 291 | case DOUBLE: |
duke@1 | 292 | case BOOLEAN: |
duke@1 | 293 | case VOID: |
duke@1 | 294 | if (stopAtMemberDecl) |
duke@1 | 295 | return; |
duke@1 | 296 | break; |
duke@1 | 297 | case IDENTIFIER: |
duke@1 | 298 | if (stopAtIdentifier) |
duke@1 | 299 | return; |
duke@1 | 300 | break; |
duke@1 | 301 | case CASE: |
duke@1 | 302 | case DEFAULT: |
duke@1 | 303 | case IF: |
duke@1 | 304 | case FOR: |
duke@1 | 305 | case WHILE: |
duke@1 | 306 | case DO: |
duke@1 | 307 | case TRY: |
duke@1 | 308 | case SWITCH: |
duke@1 | 309 | case RETURN: |
duke@1 | 310 | case THROW: |
duke@1 | 311 | case BREAK: |
duke@1 | 312 | case CONTINUE: |
duke@1 | 313 | case ELSE: |
duke@1 | 314 | case FINALLY: |
duke@1 | 315 | case CATCH: |
duke@1 | 316 | if (stopAtStatement) |
duke@1 | 317 | return; |
duke@1 | 318 | break; |
duke@1 | 319 | } |
mcimadamore@1113 | 320 | nextToken(); |
duke@1 | 321 | } |
duke@1 | 322 | } |
duke@1 | 323 | |
mcimadamore@1113 | 324 | private JCErroneous syntaxError(int pos, String key, TokenKind... args) { |
ksrini@1074 | 325 | return syntaxError(pos, List.<JCTree>nil(), key, args); |
duke@1 | 326 | } |
duke@1 | 327 | |
mcimadamore@1113 | 328 | private JCErroneous syntaxError(int pos, List<JCTree> errs, String key, TokenKind... args) { |
duke@1 | 329 | setErrorEndPos(pos); |
ksrini@1074 | 330 | JCErroneous err = F.at(pos).Erroneous(errs); |
ksrini@1074 | 331 | reportSyntaxError(err, key, (Object[])args); |
ksrini@1074 | 332 | if (errs != null) { |
ksrini@1074 | 333 | JCTree last = errs.last(); |
ksrini@1074 | 334 | if (last != null) |
ksrini@1074 | 335 | storeEnd(last, pos); |
ksrini@1074 | 336 | } |
ksrini@1074 | 337 | return toP(err); |
duke@1 | 338 | } |
duke@1 | 339 | |
duke@1 | 340 | private int errorPos = Position.NOPOS; |
ksrini@1074 | 341 | |
duke@1 | 342 | /** |
ksrini@1074 | 343 | * Report a syntax using the given the position parameter and arguments, |
ksrini@1074 | 344 | * unless one was already reported at the same position. |
duke@1 | 345 | */ |
mcimadamore@80 | 346 | private void reportSyntaxError(int pos, String key, Object... args) { |
ksrini@1074 | 347 | JCDiagnostic.DiagnosticPosition diag = new JCDiagnostic.SimpleDiagnosticPosition(pos); |
ksrini@1074 | 348 | reportSyntaxError(diag, key, args); |
ksrini@1074 | 349 | } |
ksrini@1074 | 350 | |
ksrini@1074 | 351 | /** |
ksrini@1074 | 352 | * Report a syntax error using the given DiagnosticPosition object and |
ksrini@1074 | 353 | * arguments, unless one was already reported at the same position. |
ksrini@1074 | 354 | */ |
ksrini@1074 | 355 | private void reportSyntaxError(JCDiagnostic.DiagnosticPosition diagPos, String key, Object... args) { |
ksrini@1074 | 356 | int pos = diagPos.getPreferredPosition(); |
duke@1 | 357 | if (pos > S.errPos() || pos == Position.NOPOS) { |
mcimadamore@1113 | 358 | if (token.kind == EOF) { |
ksrini@1074 | 359 | error(diagPos, "premature.eof"); |
ksrini@1074 | 360 | } else { |
ksrini@1074 | 361 | error(diagPos, key, args); |
ksrini@1074 | 362 | } |
duke@1 | 363 | } |
duke@1 | 364 | S.errPos(pos); |
mcimadamore@1113 | 365 | if (token.pos == errorPos) |
mcimadamore@1113 | 366 | nextToken(); // guarantee progress |
mcimadamore@1113 | 367 | errorPos = token.pos; |
duke@1 | 368 | } |
duke@1 | 369 | |
duke@1 | 370 | |
duke@1 | 371 | /** Generate a syntax error at current position unless one was already |
duke@1 | 372 | * reported at the same position. |
duke@1 | 373 | */ |
duke@1 | 374 | private JCErroneous syntaxError(String key) { |
mcimadamore@1113 | 375 | return syntaxError(token.pos, key); |
duke@1 | 376 | } |
duke@1 | 377 | |
duke@1 | 378 | /** Generate a syntax error at current position unless one was |
duke@1 | 379 | * already reported at the same position. |
duke@1 | 380 | */ |
mcimadamore@1113 | 381 | private JCErroneous syntaxError(String key, TokenKind arg) { |
mcimadamore@1113 | 382 | return syntaxError(token.pos, key, arg); |
duke@1 | 383 | } |
duke@1 | 384 | |
duke@1 | 385 | /** If next input token matches given token, skip it, otherwise report |
duke@1 | 386 | * an error. |
duke@1 | 387 | */ |
mcimadamore@1113 | 388 | public void accept(TokenKind tk) { |
mcimadamore@1113 | 389 | if (token.kind == tk) { |
mcimadamore@1113 | 390 | nextToken(); |
duke@1 | 391 | } else { |
mcimadamore@1113 | 392 | setErrorEndPos(token.pos); |
mcimadamore@1113 | 393 | reportSyntaxError(S.prevToken().endPos, "expected", tk); |
duke@1 | 394 | } |
duke@1 | 395 | } |
duke@1 | 396 | |
duke@1 | 397 | /** Report an illegal start of expression/type error at given position. |
duke@1 | 398 | */ |
duke@1 | 399 | JCExpression illegal(int pos) { |
ksrini@1074 | 400 | setErrorEndPos(pos); |
duke@1 | 401 | if ((mode & EXPR) != 0) |
duke@1 | 402 | return syntaxError(pos, "illegal.start.of.expr"); |
duke@1 | 403 | else |
duke@1 | 404 | return syntaxError(pos, "illegal.start.of.type"); |
duke@1 | 405 | |
duke@1 | 406 | } |
duke@1 | 407 | |
duke@1 | 408 | /** Report an illegal start of expression/type error at current position. |
duke@1 | 409 | */ |
duke@1 | 410 | JCExpression illegal() { |
mcimadamore@1113 | 411 | return illegal(token.pos); |
duke@1 | 412 | } |
duke@1 | 413 | |
duke@1 | 414 | /** Diagnose a modifier flag from the set, if any. */ |
duke@1 | 415 | void checkNoMods(long mods) { |
duke@1 | 416 | if (mods != 0) { |
duke@1 | 417 | long lowestMod = mods & -mods; |
mcimadamore@1113 | 418 | error(token.pos, "mod.not.allowed.here", |
mcimadamore@80 | 419 | Flags.asFlagSet(lowestMod)); |
duke@1 | 420 | } |
duke@1 | 421 | } |
duke@1 | 422 | |
duke@1 | 423 | /* ---------- doc comments --------- */ |
duke@1 | 424 | |
jjg@1280 | 425 | /** A table to store all documentation comments |
duke@1 | 426 | * indexed by the tree nodes they refer to. |
duke@1 | 427 | * defined only if option flag keepDocComment is set. |
duke@1 | 428 | */ |
jjg@1280 | 429 | private final DocCommentTable docComments; |
duke@1 | 430 | |
duke@1 | 431 | /** Make an entry into docComments hashtable, |
duke@1 | 432 | * provided flag keepDocComments is set and given doc comment is non-null. |
duke@1 | 433 | * @param tree The tree to be used as index in the hashtable |
duke@1 | 434 | * @param dc The doc comment to associate with the tree, or null. |
duke@1 | 435 | */ |
jjg@1280 | 436 | void attach(JCTree tree, Comment dc) { |
duke@1 | 437 | if (keepDocComments && dc != null) { |
duke@1 | 438 | // System.out.println("doc comment = ");System.out.println(dc);//DEBUG |
jjg@1280 | 439 | docComments.putComment(tree, dc); |
duke@1 | 440 | } |
duke@1 | 441 | } |
duke@1 | 442 | |
duke@1 | 443 | /* -------- source positions ------- */ |
duke@1 | 444 | |
duke@1 | 445 | private void setErrorEndPos(int errPos) { |
ksrini@1138 | 446 | endPosTable.setErrorEndPos(errPos); |
duke@1 | 447 | } |
duke@1 | 448 | |
ksrini@1138 | 449 | private void storeEnd(JCTree tree, int endpos) { |
ksrini@1138 | 450 | endPosTable.storeEnd(tree, endpos); |
duke@1 | 451 | } |
duke@1 | 452 | |
ksrini@1138 | 453 | private <T extends JCTree> T to(T t) { |
ksrini@1138 | 454 | return endPosTable.to(t); |
ksrini@1138 | 455 | } |
duke@1 | 456 | |
ksrini@1138 | 457 | private <T extends JCTree> T toP(T t) { |
ksrini@1138 | 458 | return endPosTable.toP(t); |
ksrini@1138 | 459 | } |
duke@1 | 460 | |
duke@1 | 461 | /** Get the start position for a tree node. The start position is |
duke@1 | 462 | * defined to be the position of the first character of the first |
duke@1 | 463 | * token of the node's source text. |
duke@1 | 464 | * @param tree The tree node |
duke@1 | 465 | */ |
duke@1 | 466 | public int getStartPos(JCTree tree) { |
duke@1 | 467 | return TreeInfo.getStartPos(tree); |
duke@1 | 468 | } |
duke@1 | 469 | |
duke@1 | 470 | /** |
duke@1 | 471 | * Get the end position for a tree node. The end position is |
duke@1 | 472 | * defined to be the position of the last character of the last |
duke@1 | 473 | * token of the node's source text. Returns Position.NOPOS if end |
duke@1 | 474 | * positions are not generated or the position is otherwise not |
duke@1 | 475 | * found. |
duke@1 | 476 | * @param tree The tree node |
duke@1 | 477 | */ |
duke@1 | 478 | public int getEndPos(JCTree tree) { |
ksrini@1138 | 479 | return endPosTable.getEndPos(tree); |
duke@1 | 480 | } |
duke@1 | 481 | |
duke@1 | 482 | |
duke@1 | 483 | |
duke@1 | 484 | /* ---------- parsing -------------- */ |
duke@1 | 485 | |
duke@1 | 486 | /** |
duke@1 | 487 | * Ident = IDENTIFIER |
duke@1 | 488 | */ |
duke@1 | 489 | Name ident() { |
mcimadamore@1113 | 490 | if (token.kind == IDENTIFIER) { |
mcimadamore@1113 | 491 | Name name = token.name(); |
mcimadamore@1113 | 492 | nextToken(); |
duke@1 | 493 | return name; |
mcimadamore@1113 | 494 | } else if (token.kind == ASSERT) { |
duke@1 | 495 | if (allowAsserts) { |
mcimadamore@1113 | 496 | error(token.pos, "assert.as.identifier"); |
mcimadamore@1113 | 497 | nextToken(); |
duke@1 | 498 | return names.error; |
duke@1 | 499 | } else { |
mcimadamore@1113 | 500 | warning(token.pos, "assert.as.identifier"); |
mcimadamore@1113 | 501 | Name name = token.name(); |
mcimadamore@1113 | 502 | nextToken(); |
duke@1 | 503 | return name; |
duke@1 | 504 | } |
mcimadamore@1113 | 505 | } else if (token.kind == ENUM) { |
duke@1 | 506 | if (allowEnums) { |
mcimadamore@1113 | 507 | error(token.pos, "enum.as.identifier"); |
mcimadamore@1113 | 508 | nextToken(); |
duke@1 | 509 | return names.error; |
duke@1 | 510 | } else { |
mcimadamore@1113 | 511 | warning(token.pos, "enum.as.identifier"); |
mcimadamore@1113 | 512 | Name name = token.name(); |
mcimadamore@1113 | 513 | nextToken(); |
duke@1 | 514 | return name; |
duke@1 | 515 | } |
duke@1 | 516 | } else { |
duke@1 | 517 | accept(IDENTIFIER); |
duke@1 | 518 | return names.error; |
duke@1 | 519 | } |
duke@1 | 520 | } |
duke@1 | 521 | |
duke@1 | 522 | /** |
duke@1 | 523 | * Qualident = Ident { DOT Ident } |
duke@1 | 524 | */ |
duke@1 | 525 | public JCExpression qualident() { |
mcimadamore@1113 | 526 | JCExpression t = toP(F.at(token.pos).Ident(ident())); |
mcimadamore@1113 | 527 | while (token.kind == DOT) { |
mcimadamore@1113 | 528 | int pos = token.pos; |
mcimadamore@1113 | 529 | nextToken(); |
duke@1 | 530 | t = toP(F.at(pos).Select(t, ident())); |
duke@1 | 531 | } |
duke@1 | 532 | return t; |
duke@1 | 533 | } |
duke@1 | 534 | |
ksrini@1074 | 535 | JCExpression literal(Name prefix) { |
mcimadamore@1113 | 536 | return literal(prefix, token.pos); |
ksrini@1074 | 537 | } |
ksrini@1074 | 538 | |
duke@1 | 539 | /** |
duke@1 | 540 | * Literal = |
duke@1 | 541 | * INTLITERAL |
duke@1 | 542 | * | LONGLITERAL |
duke@1 | 543 | * | FLOATLITERAL |
duke@1 | 544 | * | DOUBLELITERAL |
duke@1 | 545 | * | CHARLITERAL |
duke@1 | 546 | * | STRINGLITERAL |
duke@1 | 547 | * | TRUE |
duke@1 | 548 | * | FALSE |
duke@1 | 549 | * | NULL |
duke@1 | 550 | */ |
ksrini@1074 | 551 | JCExpression literal(Name prefix, int pos) { |
duke@1 | 552 | JCExpression t = errorTree; |
mcimadamore@1113 | 553 | switch (token.kind) { |
duke@1 | 554 | case INTLITERAL: |
duke@1 | 555 | try { |
duke@1 | 556 | t = F.at(pos).Literal( |
duke@1 | 557 | TypeTags.INT, |
mcimadamore@1113 | 558 | Convert.string2int(strval(prefix), token.radix())); |
duke@1 | 559 | } catch (NumberFormatException ex) { |
mcimadamore@1113 | 560 | error(token.pos, "int.number.too.large", strval(prefix)); |
duke@1 | 561 | } |
duke@1 | 562 | break; |
duke@1 | 563 | case LONGLITERAL: |
duke@1 | 564 | try { |
duke@1 | 565 | t = F.at(pos).Literal( |
duke@1 | 566 | TypeTags.LONG, |
mcimadamore@1113 | 567 | new Long(Convert.string2long(strval(prefix), token.radix()))); |
duke@1 | 568 | } catch (NumberFormatException ex) { |
mcimadamore@1113 | 569 | error(token.pos, "int.number.too.large", strval(prefix)); |
duke@1 | 570 | } |
duke@1 | 571 | break; |
duke@1 | 572 | case FLOATLITERAL: { |
mcimadamore@1113 | 573 | String proper = token.radix() == 16 ? |
mcimadamore@1113 | 574 | ("0x"+ token.stringVal()) : |
mcimadamore@1113 | 575 | token.stringVal(); |
duke@1 | 576 | Float n; |
duke@1 | 577 | try { |
duke@1 | 578 | n = Float.valueOf(proper); |
duke@1 | 579 | } catch (NumberFormatException ex) { |
jjg@788 | 580 | // error already reported in scanner |
duke@1 | 581 | n = Float.NaN; |
duke@1 | 582 | } |
duke@1 | 583 | if (n.floatValue() == 0.0f && !isZero(proper)) |
mcimadamore@1113 | 584 | error(token.pos, "fp.number.too.small"); |
duke@1 | 585 | else if (n.floatValue() == Float.POSITIVE_INFINITY) |
mcimadamore@1113 | 586 | error(token.pos, "fp.number.too.large"); |
duke@1 | 587 | else |
duke@1 | 588 | t = F.at(pos).Literal(TypeTags.FLOAT, n); |
duke@1 | 589 | break; |
duke@1 | 590 | } |
duke@1 | 591 | case DOUBLELITERAL: { |
mcimadamore@1113 | 592 | String proper = token.radix() == 16 ? |
mcimadamore@1113 | 593 | ("0x"+ token.stringVal()) : |
mcimadamore@1113 | 594 | token.stringVal(); |
duke@1 | 595 | Double n; |
duke@1 | 596 | try { |
duke@1 | 597 | n = Double.valueOf(proper); |
duke@1 | 598 | } catch (NumberFormatException ex) { |
duke@1 | 599 | // error already reported in scanner |
duke@1 | 600 | n = Double.NaN; |
duke@1 | 601 | } |
duke@1 | 602 | if (n.doubleValue() == 0.0d && !isZero(proper)) |
mcimadamore@1113 | 603 | error(token.pos, "fp.number.too.small"); |
duke@1 | 604 | else if (n.doubleValue() == Double.POSITIVE_INFINITY) |
mcimadamore@1113 | 605 | error(token.pos, "fp.number.too.large"); |
duke@1 | 606 | else |
duke@1 | 607 | t = F.at(pos).Literal(TypeTags.DOUBLE, n); |
duke@1 | 608 | break; |
duke@1 | 609 | } |
duke@1 | 610 | case CHARLITERAL: |
duke@1 | 611 | t = F.at(pos).Literal( |
duke@1 | 612 | TypeTags.CHAR, |
mcimadamore@1113 | 613 | token.stringVal().charAt(0) + 0); |
duke@1 | 614 | break; |
duke@1 | 615 | case STRINGLITERAL: |
duke@1 | 616 | t = F.at(pos).Literal( |
duke@1 | 617 | TypeTags.CLASS, |
mcimadamore@1113 | 618 | token.stringVal()); |
duke@1 | 619 | break; |
duke@1 | 620 | case TRUE: case FALSE: |
duke@1 | 621 | t = F.at(pos).Literal( |
duke@1 | 622 | TypeTags.BOOLEAN, |
mcimadamore@1113 | 623 | (token.kind == TRUE ? 1 : 0)); |
duke@1 | 624 | break; |
duke@1 | 625 | case NULL: |
duke@1 | 626 | t = F.at(pos).Literal( |
duke@1 | 627 | TypeTags.BOT, |
duke@1 | 628 | null); |
duke@1 | 629 | break; |
duke@1 | 630 | default: |
jjg@816 | 631 | Assert.error(); |
duke@1 | 632 | } |
duke@1 | 633 | if (t == errorTree) |
duke@1 | 634 | t = F.at(pos).Erroneous(); |
mcimadamore@1113 | 635 | storeEnd(t, token.endPos); |
mcimadamore@1113 | 636 | nextToken(); |
duke@1 | 637 | return t; |
duke@1 | 638 | } |
duke@1 | 639 | //where |
duke@1 | 640 | boolean isZero(String s) { |
duke@1 | 641 | char[] cs = s.toCharArray(); |
jjg@408 | 642 | int base = ((cs.length > 1 && Character.toLowerCase(cs[1]) == 'x') ? 16 : 10); |
duke@1 | 643 | int i = ((base==16) ? 2 : 0); |
duke@1 | 644 | while (i < cs.length && (cs[i] == '0' || cs[i] == '.')) i++; |
duke@1 | 645 | return !(i < cs.length && (Character.digit(cs[i], base) > 0)); |
duke@1 | 646 | } |
duke@1 | 647 | |
duke@1 | 648 | String strval(Name prefix) { |
mcimadamore@1113 | 649 | String s = token.stringVal(); |
jjg@113 | 650 | return prefix.isEmpty() ? s : prefix + s; |
duke@1 | 651 | } |
duke@1 | 652 | |
duke@1 | 653 | /** terms can be either expressions or types. |
duke@1 | 654 | */ |
jjg@111 | 655 | public JCExpression parseExpression() { |
duke@1 | 656 | return term(EXPR); |
duke@1 | 657 | } |
duke@1 | 658 | |
jjg@111 | 659 | public JCExpression parseType() { |
duke@1 | 660 | return term(TYPE); |
duke@1 | 661 | } |
duke@1 | 662 | |
duke@1 | 663 | JCExpression term(int newmode) { |
duke@1 | 664 | int prevmode = mode; |
duke@1 | 665 | mode = newmode; |
duke@1 | 666 | JCExpression t = term(); |
duke@1 | 667 | lastmode = mode; |
duke@1 | 668 | mode = prevmode; |
duke@1 | 669 | return t; |
duke@1 | 670 | } |
duke@1 | 671 | |
duke@1 | 672 | /** |
jjg@1326 | 673 | * {@literal |
duke@1 | 674 | * Expression = Expression1 [ExpressionRest] |
duke@1 | 675 | * ExpressionRest = [AssignmentOperator Expression1] |
duke@1 | 676 | * AssignmentOperator = "=" | "+=" | "-=" | "*=" | "/=" | |
duke@1 | 677 | * "&=" | "|=" | "^=" | |
duke@1 | 678 | * "%=" | "<<=" | ">>=" | ">>>=" |
duke@1 | 679 | * Type = Type1 |
duke@1 | 680 | * TypeNoParams = TypeNoParams1 |
duke@1 | 681 | * StatementExpression = Expression |
duke@1 | 682 | * ConstantExpression = Expression |
jjg@1326 | 683 | * } |
duke@1 | 684 | */ |
duke@1 | 685 | JCExpression term() { |
duke@1 | 686 | JCExpression t = term1(); |
duke@1 | 687 | if ((mode & EXPR) != 0 && |
mcimadamore@1113 | 688 | token.kind == EQ || PLUSEQ.compareTo(token.kind) <= 0 && token.kind.compareTo(GTGTGTEQ) <= 0) |
duke@1 | 689 | return termRest(t); |
duke@1 | 690 | else |
duke@1 | 691 | return t; |
duke@1 | 692 | } |
duke@1 | 693 | |
duke@1 | 694 | JCExpression termRest(JCExpression t) { |
mcimadamore@1113 | 695 | switch (token.kind) { |
duke@1 | 696 | case EQ: { |
mcimadamore@1113 | 697 | int pos = token.pos; |
mcimadamore@1113 | 698 | nextToken(); |
duke@1 | 699 | mode = EXPR; |
duke@1 | 700 | JCExpression t1 = term(); |
duke@1 | 701 | return toP(F.at(pos).Assign(t, t1)); |
duke@1 | 702 | } |
duke@1 | 703 | case PLUSEQ: |
duke@1 | 704 | case SUBEQ: |
duke@1 | 705 | case STAREQ: |
duke@1 | 706 | case SLASHEQ: |
duke@1 | 707 | case PERCENTEQ: |
duke@1 | 708 | case AMPEQ: |
duke@1 | 709 | case BAREQ: |
duke@1 | 710 | case CARETEQ: |
duke@1 | 711 | case LTLTEQ: |
duke@1 | 712 | case GTGTEQ: |
duke@1 | 713 | case GTGTGTEQ: |
mcimadamore@1113 | 714 | int pos = token.pos; |
mcimadamore@1113 | 715 | TokenKind tk = token.kind; |
mcimadamore@1113 | 716 | nextToken(); |
duke@1 | 717 | mode = EXPR; |
duke@1 | 718 | JCExpression t1 = term(); |
mcimadamore@1113 | 719 | return F.at(pos).Assignop(optag(tk), t, t1); |
duke@1 | 720 | default: |
duke@1 | 721 | return t; |
duke@1 | 722 | } |
duke@1 | 723 | } |
duke@1 | 724 | |
duke@1 | 725 | /** Expression1 = Expression2 [Expression1Rest] |
duke@1 | 726 | * Type1 = Type2 |
duke@1 | 727 | * TypeNoParams1 = TypeNoParams2 |
duke@1 | 728 | */ |
duke@1 | 729 | JCExpression term1() { |
duke@1 | 730 | JCExpression t = term2(); |
mcimadamore@1113 | 731 | if ((mode & EXPR) != 0 && token.kind == QUES) { |
duke@1 | 732 | mode = EXPR; |
duke@1 | 733 | return term1Rest(t); |
duke@1 | 734 | } else { |
duke@1 | 735 | return t; |
duke@1 | 736 | } |
duke@1 | 737 | } |
duke@1 | 738 | |
duke@1 | 739 | /** Expression1Rest = ["?" Expression ":" Expression1] |
duke@1 | 740 | */ |
duke@1 | 741 | JCExpression term1Rest(JCExpression t) { |
mcimadamore@1113 | 742 | if (token.kind == QUES) { |
mcimadamore@1113 | 743 | int pos = token.pos; |
mcimadamore@1113 | 744 | nextToken(); |
duke@1 | 745 | JCExpression t1 = term(); |
duke@1 | 746 | accept(COLON); |
duke@1 | 747 | JCExpression t2 = term1(); |
duke@1 | 748 | return F.at(pos).Conditional(t, t1, t2); |
duke@1 | 749 | } else { |
duke@1 | 750 | return t; |
duke@1 | 751 | } |
duke@1 | 752 | } |
duke@1 | 753 | |
duke@1 | 754 | /** Expression2 = Expression3 [Expression2Rest] |
duke@1 | 755 | * Type2 = Type3 |
duke@1 | 756 | * TypeNoParams2 = TypeNoParams3 |
duke@1 | 757 | */ |
duke@1 | 758 | JCExpression term2() { |
duke@1 | 759 | JCExpression t = term3(); |
mcimadamore@1113 | 760 | if ((mode & EXPR) != 0 && prec(token.kind) >= TreeInfo.orPrec) { |
duke@1 | 761 | mode = EXPR; |
duke@1 | 762 | return term2Rest(t, TreeInfo.orPrec); |
duke@1 | 763 | } else { |
duke@1 | 764 | return t; |
duke@1 | 765 | } |
duke@1 | 766 | } |
duke@1 | 767 | |
duke@1 | 768 | /* Expression2Rest = {infixop Expression3} |
duke@1 | 769 | * | Expression3 instanceof Type |
duke@1 | 770 | * infixop = "||" |
duke@1 | 771 | * | "&&" |
duke@1 | 772 | * | "|" |
duke@1 | 773 | * | "^" |
duke@1 | 774 | * | "&" |
duke@1 | 775 | * | "==" | "!=" |
duke@1 | 776 | * | "<" | ">" | "<=" | ">=" |
duke@1 | 777 | * | "<<" | ">>" | ">>>" |
duke@1 | 778 | * | "+" | "-" |
duke@1 | 779 | * | "*" | "/" | "%" |
duke@1 | 780 | */ |
duke@1 | 781 | JCExpression term2Rest(JCExpression t, int minprec) { |
duke@1 | 782 | List<JCExpression[]> savedOd = odStackSupply.elems; |
duke@1 | 783 | JCExpression[] odStack = newOdStack(); |
duke@1 | 784 | List<Token[]> savedOp = opStackSupply.elems; |
duke@1 | 785 | Token[] opStack = newOpStack(); |
mcimadamore@1113 | 786 | |
duke@1 | 787 | // optimization, was odStack = new Tree[...]; opStack = new Tree[...]; |
duke@1 | 788 | int top = 0; |
duke@1 | 789 | odStack[0] = t; |
mcimadamore@1113 | 790 | int startPos = token.pos; |
mcimadamore@1113 | 791 | Token topOp = Tokens.DUMMY; |
mcimadamore@1113 | 792 | while (prec(token.kind) >= minprec) { |
duke@1 | 793 | opStack[top] = topOp; |
duke@1 | 794 | top++; |
mcimadamore@1113 | 795 | topOp = token; |
mcimadamore@1113 | 796 | nextToken(); |
mcimadamore@1165 | 797 | odStack[top] = (topOp.kind == INSTANCEOF) ? parseType() : term3(); |
mcimadamore@1113 | 798 | while (top > 0 && prec(topOp.kind) >= prec(token.kind)) { |
mcimadamore@1113 | 799 | odStack[top-1] = makeOp(topOp.pos, topOp.kind, odStack[top-1], |
duke@1 | 800 | odStack[top]); |
duke@1 | 801 | top--; |
duke@1 | 802 | topOp = opStack[top]; |
duke@1 | 803 | } |
duke@1 | 804 | } |
jjg@816 | 805 | Assert.check(top == 0); |
duke@1 | 806 | t = odStack[0]; |
duke@1 | 807 | |
jjg@1127 | 808 | if (t.hasTag(JCTree.Tag.PLUS)) { |
jjg@1362 | 809 | StringBuilder buf = foldStrings(t); |
duke@1 | 810 | if (buf != null) { |
duke@1 | 811 | t = toP(F.at(startPos).Literal(TypeTags.CLASS, buf.toString())); |
duke@1 | 812 | } |
duke@1 | 813 | } |
duke@1 | 814 | |
duke@1 | 815 | odStackSupply.elems = savedOd; // optimization |
duke@1 | 816 | opStackSupply.elems = savedOp; // optimization |
duke@1 | 817 | return t; |
duke@1 | 818 | } |
duke@1 | 819 | //where |
duke@1 | 820 | /** Construct a binary or type test node. |
duke@1 | 821 | */ |
duke@1 | 822 | private JCExpression makeOp(int pos, |
mcimadamore@1113 | 823 | TokenKind topOp, |
duke@1 | 824 | JCExpression od1, |
duke@1 | 825 | JCExpression od2) |
duke@1 | 826 | { |
duke@1 | 827 | if (topOp == INSTANCEOF) { |
duke@1 | 828 | return F.at(pos).TypeTest(od1, od2); |
duke@1 | 829 | } else { |
duke@1 | 830 | return F.at(pos).Binary(optag(topOp), od1, od2); |
duke@1 | 831 | } |
duke@1 | 832 | } |
duke@1 | 833 | /** If tree is a concatenation of string literals, replace it |
duke@1 | 834 | * by a single literal representing the concatenated string. |
duke@1 | 835 | */ |
jjg@1362 | 836 | protected StringBuilder foldStrings(JCTree tree) { |
ksrini@1062 | 837 | if (!allowStringFolding) |
ksrini@1062 | 838 | return null; |
duke@1 | 839 | List<String> buf = List.nil(); |
duke@1 | 840 | while (true) { |
jjg@1127 | 841 | if (tree.hasTag(LITERAL)) { |
duke@1 | 842 | JCLiteral lit = (JCLiteral) tree; |
duke@1 | 843 | if (lit.typetag == TypeTags.CLASS) { |
jjg@1362 | 844 | StringBuilder sbuf = |
jjg@1362 | 845 | new StringBuilder((String)lit.value); |
duke@1 | 846 | while (buf.nonEmpty()) { |
duke@1 | 847 | sbuf.append(buf.head); |
duke@1 | 848 | buf = buf.tail; |
duke@1 | 849 | } |
duke@1 | 850 | return sbuf; |
duke@1 | 851 | } |
jjg@1127 | 852 | } else if (tree.hasTag(JCTree.Tag.PLUS)) { |
duke@1 | 853 | JCBinary op = (JCBinary)tree; |
jjg@1127 | 854 | if (op.rhs.hasTag(LITERAL)) { |
duke@1 | 855 | JCLiteral lit = (JCLiteral) op.rhs; |
duke@1 | 856 | if (lit.typetag == TypeTags.CLASS) { |
duke@1 | 857 | buf = buf.prepend((String) lit.value); |
duke@1 | 858 | tree = op.lhs; |
duke@1 | 859 | continue; |
duke@1 | 860 | } |
duke@1 | 861 | } |
duke@1 | 862 | } |
duke@1 | 863 | return null; |
duke@1 | 864 | } |
duke@1 | 865 | } |
duke@1 | 866 | |
duke@1 | 867 | /** optimization: To save allocating a new operand/operator stack |
duke@1 | 868 | * for every binary operation, we use supplys. |
duke@1 | 869 | */ |
duke@1 | 870 | ListBuffer<JCExpression[]> odStackSupply = new ListBuffer<JCExpression[]>(); |
duke@1 | 871 | ListBuffer<Token[]> opStackSupply = new ListBuffer<Token[]>(); |
duke@1 | 872 | |
duke@1 | 873 | private JCExpression[] newOdStack() { |
duke@1 | 874 | if (odStackSupply.elems == odStackSupply.last) |
duke@1 | 875 | odStackSupply.append(new JCExpression[infixPrecedenceLevels + 1]); |
duke@1 | 876 | JCExpression[] odStack = odStackSupply.elems.head; |
duke@1 | 877 | odStackSupply.elems = odStackSupply.elems.tail; |
duke@1 | 878 | return odStack; |
duke@1 | 879 | } |
duke@1 | 880 | |
duke@1 | 881 | private Token[] newOpStack() { |
duke@1 | 882 | if (opStackSupply.elems == opStackSupply.last) |
duke@1 | 883 | opStackSupply.append(new Token[infixPrecedenceLevels + 1]); |
duke@1 | 884 | Token[] opStack = opStackSupply.elems.head; |
duke@1 | 885 | opStackSupply.elems = opStackSupply.elems.tail; |
duke@1 | 886 | return opStack; |
duke@1 | 887 | } |
duke@1 | 888 | |
jjg@1326 | 889 | /** |
jjg@1326 | 890 | * Expression3 = PrefixOp Expression3 |
duke@1 | 891 | * | "(" Expr | TypeNoParams ")" Expression3 |
duke@1 | 892 | * | Primary {Selector} {PostfixOp} |
jjg@1326 | 893 | * |
jjg@1326 | 894 | * {@literal |
duke@1 | 895 | * Primary = "(" Expression ")" |
duke@1 | 896 | * | Literal |
duke@1 | 897 | * | [TypeArguments] THIS [Arguments] |
duke@1 | 898 | * | [TypeArguments] SUPER SuperSuffix |
duke@1 | 899 | * | NEW [TypeArguments] Creator |
mcimadamore@1144 | 900 | * | "(" Arguments ")" "->" ( Expression | Block ) |
mcimadamore@1144 | 901 | * | Ident "->" ( Expression | Block ) |
jjg@722 | 902 | * | Ident { "." Ident } |
mcimadamore@1145 | 903 | * | Expression3 MemberReferenceSuffix |
jjg@722 | 904 | * [ "[" ( "]" BracketsOpt "." CLASS | Expression "]" ) |
duke@1 | 905 | * | Arguments |
duke@1 | 906 | * | "." ( CLASS | THIS | [TypeArguments] SUPER Arguments | NEW [TypeArguments] InnerCreator ) |
duke@1 | 907 | * ] |
duke@1 | 908 | * | BasicType BracketsOpt "." CLASS |
jjg@1326 | 909 | * } |
jjg@1326 | 910 | * |
duke@1 | 911 | * PrefixOp = "++" | "--" | "!" | "~" | "+" | "-" |
duke@1 | 912 | * PostfixOp = "++" | "--" |
duke@1 | 913 | * Type3 = Ident { "." Ident } [TypeArguments] {TypeSelector} BracketsOpt |
duke@1 | 914 | * | BasicType |
duke@1 | 915 | * TypeNoParams3 = Ident { "." Ident } BracketsOpt |
duke@1 | 916 | * Selector = "." [TypeArguments] Ident [Arguments] |
duke@1 | 917 | * | "." THIS |
duke@1 | 918 | * | "." [TypeArguments] SUPER SuperSuffix |
duke@1 | 919 | * | "." NEW [TypeArguments] InnerCreator |
duke@1 | 920 | * | "[" Expression "]" |
duke@1 | 921 | * TypeSelector = "." Ident [TypeArguments] |
duke@1 | 922 | * SuperSuffix = Arguments | "." Ident [Arguments] |
duke@1 | 923 | */ |
duke@1 | 924 | protected JCExpression term3() { |
mcimadamore@1113 | 925 | int pos = token.pos; |
duke@1 | 926 | JCExpression t; |
duke@1 | 927 | List<JCExpression> typeArgs = typeArgumentsOpt(EXPR); |
mcimadamore@1113 | 928 | switch (token.kind) { |
duke@1 | 929 | case QUES: |
duke@1 | 930 | if ((mode & TYPE) != 0 && (mode & (TYPEARG|NOPARAMS)) == TYPEARG) { |
duke@1 | 931 | mode = TYPE; |
duke@1 | 932 | return typeArgument(); |
duke@1 | 933 | } else |
duke@1 | 934 | return illegal(); |
duke@1 | 935 | case PLUSPLUS: case SUBSUB: case BANG: case TILDE: case PLUS: case SUB: |
duke@1 | 936 | if (typeArgs == null && (mode & EXPR) != 0) { |
mcimadamore@1113 | 937 | TokenKind tk = token.kind; |
mcimadamore@1113 | 938 | nextToken(); |
duke@1 | 939 | mode = EXPR; |
mcimadamore@1113 | 940 | if (tk == SUB && |
mcimadamore@1113 | 941 | (token.kind == INTLITERAL || token.kind == LONGLITERAL) && |
mcimadamore@1113 | 942 | token.radix() == 10) { |
duke@1 | 943 | mode = EXPR; |
ksrini@1074 | 944 | t = literal(names.hyphen, pos); |
duke@1 | 945 | } else { |
mcimadamore@1165 | 946 | t = term3(); |
mcimadamore@1113 | 947 | return F.at(pos).Unary(unoptag(tk), t); |
duke@1 | 948 | } |
duke@1 | 949 | } else return illegal(); |
duke@1 | 950 | break; |
duke@1 | 951 | case LPAREN: |
duke@1 | 952 | if (typeArgs == null && (mode & EXPR) != 0) { |
mcimadamore@1348 | 953 | if (peekToken(MONKEYS_AT) || |
mcimadamore@1348 | 954 | peekToken(FINAL) || |
mcimadamore@1144 | 955 | peekToken(RPAREN) || |
mcimadamore@1144 | 956 | peekToken(IDENTIFIER, COMMA) || |
mcimadamore@1144 | 957 | peekToken(IDENTIFIER, RPAREN, ARROW)) { |
mcimadamore@1144 | 958 | //implicit n-ary lambda |
mcimadamore@1348 | 959 | t = lambdaExpressionOrStatement(true, peekToken(MONKEYS_AT) || peekToken(FINAL), pos); |
mcimadamore@1144 | 960 | break; |
mcimadamore@1144 | 961 | } else { |
mcimadamore@1113 | 962 | nextToken(); |
mcimadamore@1165 | 963 | mode = EXPR | TYPE | NOPARAMS; |
mcimadamore@1165 | 964 | t = term3(); |
mcimadamore@1144 | 965 | if ((mode & TYPE) != 0 && token.kind == LT) { |
mcimadamore@1144 | 966 | // Could be a cast to a parameterized type |
mcimadamore@1144 | 967 | JCTree.Tag op = JCTree.Tag.LT; |
mcimadamore@1144 | 968 | int pos1 = token.pos; |
mcimadamore@1144 | 969 | nextToken(); |
mcimadamore@1144 | 970 | mode &= (EXPR | TYPE); |
mcimadamore@1144 | 971 | mode |= TYPEARG; |
mcimadamore@1144 | 972 | JCExpression t1 = term3(); |
mcimadamore@1144 | 973 | if ((mode & TYPE) != 0 && |
mcimadamore@1144 | 974 | (token.kind == COMMA || token.kind == GT)) { |
mcimadamore@1144 | 975 | mode = TYPE; |
mcimadamore@1144 | 976 | ListBuffer<JCExpression> args = new ListBuffer<JCExpression>(); |
mcimadamore@1144 | 977 | args.append(t1); |
mcimadamore@1144 | 978 | while (token.kind == COMMA) { |
mcimadamore@1144 | 979 | nextToken(); |
mcimadamore@1144 | 980 | args.append(typeArgument()); |
mcimadamore@1144 | 981 | } |
mcimadamore@1144 | 982 | accept(GT); |
mcimadamore@1144 | 983 | t = toP(F.at(pos1).TypeApply(t, args.toList())); |
mcimadamore@1144 | 984 | checkGenerics(); |
mcimadamore@1144 | 985 | mode = EXPR | TYPE; //could be a lambda or a method ref or a cast to a type |
mcimadamore@1144 | 986 | t = term3Rest(t, typeArgs); |
mcimadamore@1144 | 987 | if (token.kind == IDENTIFIER || token.kind == ELLIPSIS) { |
mcimadamore@1144 | 988 | //explicit lambda (w/ generic type) |
mcimadamore@1144 | 989 | mode = EXPR; |
mcimadamore@1144 | 990 | JCModifiers mods = F.at(token.pos).Modifiers(Flags.PARAMETER); |
mcimadamore@1144 | 991 | if (token.kind == ELLIPSIS) { |
mcimadamore@1144 | 992 | mods.flags = Flags.VARARGS; |
mcimadamore@1144 | 993 | t = to(F.at(token.pos).TypeArray(t)); |
mcimadamore@1144 | 994 | nextToken(); |
mcimadamore@1144 | 995 | } |
mcimadamore@1144 | 996 | t = lambdaExpressionOrStatement(variableDeclaratorId(mods, t), pos); |
mcimadamore@1144 | 997 | break; |
mcimadamore@1144 | 998 | } |
mcimadamore@1241 | 999 | } else if ((mode & EXPR) != 0) { |
mcimadamore@1144 | 1000 | mode = EXPR; |
mcimadamore@1144 | 1001 | JCExpression e = term2Rest(t1, TreeInfo.shiftPrec); |
mcimadamore@1144 | 1002 | t = F.at(pos1).Binary(op, t, e); |
mcimadamore@1144 | 1003 | t = termRest(term1Rest(term2Rest(t, TreeInfo.orPrec))); |
mcimadamore@1241 | 1004 | } else { |
mcimadamore@1241 | 1005 | accept(GT); |
mcimadamore@1144 | 1006 | } |
mcimadamore@1144 | 1007 | } else if ((mode & TYPE) != 0 && |
mcimadamore@1144 | 1008 | (token.kind == IDENTIFIER || token.kind == ELLIPSIS)) { |
mcimadamore@1144 | 1009 | //explicit lambda (w/ non-generic type) |
mcimadamore@1144 | 1010 | mode = EXPR; |
mcimadamore@1144 | 1011 | JCModifiers mods = F.at(token.pos).Modifiers(Flags.PARAMETER); |
mcimadamore@1144 | 1012 | if (token.kind == ELLIPSIS) { |
mcimadamore@1144 | 1013 | mods.flags = Flags.VARARGS; |
mcimadamore@1144 | 1014 | t = to(F.at(token.pos).TypeArray(t)); |
mcimadamore@1113 | 1015 | nextToken(); |
duke@1 | 1016 | } |
mcimadamore@1144 | 1017 | t = lambdaExpressionOrStatement(variableDeclaratorId(mods, t), pos); |
mcimadamore@1144 | 1018 | break; |
mcimadamore@1144 | 1019 | } else { |
duke@1 | 1020 | t = termRest(term1Rest(term2Rest(t, TreeInfo.orPrec))); |
duke@1 | 1021 | } |
mcimadamore@185 | 1022 | } |
mcimadamore@1144 | 1023 | |
duke@1 | 1024 | accept(RPAREN); |
duke@1 | 1025 | lastmode = mode; |
duke@1 | 1026 | mode = EXPR; |
duke@1 | 1027 | if ((lastmode & EXPR) == 0) { |
mcimadamore@1165 | 1028 | JCExpression t1 = term3(); |
duke@1 | 1029 | return F.at(pos).TypeCast(t, t1); |
duke@1 | 1030 | } else if ((lastmode & TYPE) != 0) { |
mcimadamore@1113 | 1031 | switch (token.kind) { |
duke@1 | 1032 | /*case PLUSPLUS: case SUBSUB: */ |
duke@1 | 1033 | case BANG: case TILDE: |
duke@1 | 1034 | case LPAREN: case THIS: case SUPER: |
duke@1 | 1035 | case INTLITERAL: case LONGLITERAL: case FLOATLITERAL: |
duke@1 | 1036 | case DOUBLELITERAL: case CHARLITERAL: case STRINGLITERAL: |
duke@1 | 1037 | case TRUE: case FALSE: case NULL: |
mcimadamore@1144 | 1038 | case NEW: case IDENTIFIER: case ASSERT: case ENUM: |
duke@1 | 1039 | case BYTE: case SHORT: case CHAR: case INT: |
duke@1 | 1040 | case LONG: case FLOAT: case DOUBLE: case BOOLEAN: case VOID: |
mcimadamore@1165 | 1041 | JCExpression t1 = term3(); |
duke@1 | 1042 | return F.at(pos).TypeCast(t, t1); |
duke@1 | 1043 | } |
duke@1 | 1044 | } |
mcimadamore@1144 | 1045 | } else { |
mcimadamore@1144 | 1046 | return illegal(); |
mcimadamore@1144 | 1047 | } |
duke@1 | 1048 | t = toP(F.at(pos).Parens(t)); |
duke@1 | 1049 | break; |
duke@1 | 1050 | case THIS: |
duke@1 | 1051 | if ((mode & EXPR) != 0) { |
duke@1 | 1052 | mode = EXPR; |
duke@1 | 1053 | t = to(F.at(pos).Ident(names._this)); |
mcimadamore@1113 | 1054 | nextToken(); |
duke@1 | 1055 | if (typeArgs == null) |
duke@1 | 1056 | t = argumentsOpt(null, t); |
duke@1 | 1057 | else |
duke@1 | 1058 | t = arguments(typeArgs, t); |
duke@1 | 1059 | typeArgs = null; |
duke@1 | 1060 | } else return illegal(); |
duke@1 | 1061 | break; |
duke@1 | 1062 | case SUPER: |
duke@1 | 1063 | if ((mode & EXPR) != 0) { |
duke@1 | 1064 | mode = EXPR; |
jjg@482 | 1065 | t = to(F.at(pos).Ident(names._super)); |
jjg@482 | 1066 | t = superSuffix(typeArgs, t); |
duke@1 | 1067 | typeArgs = null; |
duke@1 | 1068 | } else return illegal(); |
duke@1 | 1069 | break; |
duke@1 | 1070 | case INTLITERAL: case LONGLITERAL: case FLOATLITERAL: case DOUBLELITERAL: |
duke@1 | 1071 | case CHARLITERAL: case STRINGLITERAL: |
duke@1 | 1072 | case TRUE: case FALSE: case NULL: |
duke@1 | 1073 | if (typeArgs == null && (mode & EXPR) != 0) { |
duke@1 | 1074 | mode = EXPR; |
duke@1 | 1075 | t = literal(names.empty); |
duke@1 | 1076 | } else return illegal(); |
duke@1 | 1077 | break; |
duke@1 | 1078 | case NEW: |
duke@1 | 1079 | if (typeArgs != null) return illegal(); |
duke@1 | 1080 | if ((mode & EXPR) != 0) { |
duke@1 | 1081 | mode = EXPR; |
mcimadamore@1113 | 1082 | nextToken(); |
mcimadamore@1113 | 1083 | if (token.kind == LT) typeArgs = typeArguments(false); |
duke@1 | 1084 | t = creator(pos, typeArgs); |
duke@1 | 1085 | typeArgs = null; |
duke@1 | 1086 | } else return illegal(); |
duke@1 | 1087 | break; |
duke@1 | 1088 | case IDENTIFIER: case ASSERT: case ENUM: |
duke@1 | 1089 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1090 | if ((mode & EXPR) != 0 && peekToken(ARROW)) { |
mcimadamore@1144 | 1091 | t = lambdaExpressionOrStatement(false, false, pos); |
mcimadamore@1144 | 1092 | } else { |
mcimadamore@1144 | 1093 | t = toP(F.at(token.pos).Ident(ident())); |
mcimadamore@1144 | 1094 | loop: while (true) { |
mcimadamore@1144 | 1095 | pos = token.pos; |
mcimadamore@1144 | 1096 | switch (token.kind) { |
mcimadamore@1144 | 1097 | case LBRACKET: |
mcimadamore@1113 | 1098 | nextToken(); |
mcimadamore@1144 | 1099 | if (token.kind == RBRACKET) { |
mcimadamore@1144 | 1100 | nextToken(); |
mcimadamore@1144 | 1101 | t = bracketsOpt(t); |
mcimadamore@1144 | 1102 | t = toP(F.at(pos).TypeArray(t)); |
mcimadamore@1144 | 1103 | t = bracketsSuffix(t); |
mcimadamore@1144 | 1104 | } else { |
mcimadamore@1144 | 1105 | if ((mode & EXPR) != 0) { |
mcimadamore@1144 | 1106 | mode = EXPR; |
mcimadamore@1144 | 1107 | JCExpression t1 = term(); |
mcimadamore@1144 | 1108 | t = to(F.at(pos).Indexed(t, t1)); |
mcimadamore@1144 | 1109 | } |
mcimadamore@1144 | 1110 | accept(RBRACKET); |
mcimadamore@1144 | 1111 | } |
mcimadamore@1144 | 1112 | break loop; |
mcimadamore@1144 | 1113 | case LPAREN: |
duke@1 | 1114 | if ((mode & EXPR) != 0) { |
duke@1 | 1115 | mode = EXPR; |
mcimadamore@1144 | 1116 | t = arguments(typeArgs, t); |
mcimadamore@1144 | 1117 | typeArgs = null; |
duke@1 | 1118 | } |
mcimadamore@1144 | 1119 | break loop; |
mcimadamore@1144 | 1120 | case DOT: |
mcimadamore@1144 | 1121 | nextToken(); |
mcimadamore@1144 | 1122 | int oldmode = mode; |
mcimadamore@1144 | 1123 | mode &= ~NOPARAMS; |
mcimadamore@1144 | 1124 | typeArgs = typeArgumentsOpt(EXPR); |
mcimadamore@1144 | 1125 | mode = oldmode; |
mcimadamore@1144 | 1126 | if ((mode & EXPR) != 0) { |
mcimadamore@1144 | 1127 | switch (token.kind) { |
mcimadamore@1144 | 1128 | case CLASS: |
mcimadamore@1144 | 1129 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1130 | mode = EXPR; |
mcimadamore@1144 | 1131 | t = to(F.at(pos).Select(t, names._class)); |
mcimadamore@1144 | 1132 | nextToken(); |
mcimadamore@1144 | 1133 | break loop; |
mcimadamore@1144 | 1134 | case THIS: |
mcimadamore@1144 | 1135 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1136 | mode = EXPR; |
mcimadamore@1144 | 1137 | t = to(F.at(pos).Select(t, names._this)); |
mcimadamore@1144 | 1138 | nextToken(); |
mcimadamore@1144 | 1139 | break loop; |
mcimadamore@1144 | 1140 | case SUPER: |
mcimadamore@1144 | 1141 | mode = EXPR; |
mcimadamore@1144 | 1142 | t = to(F.at(pos).Select(t, names._super)); |
mcimadamore@1144 | 1143 | t = superSuffix(typeArgs, t); |
mcimadamore@1144 | 1144 | typeArgs = null; |
mcimadamore@1144 | 1145 | break loop; |
mcimadamore@1144 | 1146 | case NEW: |
mcimadamore@1144 | 1147 | if (typeArgs != null) return illegal(); |
mcimadamore@1144 | 1148 | mode = EXPR; |
mcimadamore@1144 | 1149 | int pos1 = token.pos; |
mcimadamore@1144 | 1150 | nextToken(); |
mcimadamore@1144 | 1151 | if (token.kind == LT) typeArgs = typeArguments(false); |
mcimadamore@1144 | 1152 | t = innerCreator(pos1, typeArgs, t); |
mcimadamore@1144 | 1153 | typeArgs = null; |
mcimadamore@1144 | 1154 | break loop; |
mcimadamore@1144 | 1155 | } |
mcimadamore@1144 | 1156 | } |
mcimadamore@1144 | 1157 | // typeArgs saved for next loop iteration. |
mcimadamore@1144 | 1158 | t = toP(F.at(pos).Select(t, ident())); |
mcimadamore@1144 | 1159 | break; |
mcimadamore@1165 | 1160 | case LT: |
mcimadamore@1165 | 1161 | if ((mode & TYPE) == 0 && isUnboundMemberRef()) { |
mcimadamore@1165 | 1162 | //this is an unbound method reference whose qualifier |
mcimadamore@1352 | 1163 | //is a generic type i.e. A<S>::m |
mcimadamore@1165 | 1164 | int pos1 = token.pos; |
mcimadamore@1165 | 1165 | accept(LT); |
mcimadamore@1165 | 1166 | ListBuffer<JCExpression> args = new ListBuffer<JCExpression>(); |
mcimadamore@1165 | 1167 | args.append(typeArgument()); |
mcimadamore@1165 | 1168 | while (token.kind == COMMA) { |
mcimadamore@1165 | 1169 | nextToken(); |
mcimadamore@1165 | 1170 | args.append(typeArgument()); |
mcimadamore@1165 | 1171 | } |
mcimadamore@1165 | 1172 | accept(GT); |
mcimadamore@1165 | 1173 | t = toP(F.at(pos1).TypeApply(t, args.toList())); |
mcimadamore@1165 | 1174 | checkGenerics(); |
mcimadamore@1165 | 1175 | while (token.kind == DOT) { |
mcimadamore@1165 | 1176 | nextToken(); |
mcimadamore@1165 | 1177 | mode = TYPE; |
mcimadamore@1165 | 1178 | t = toP(F.at(token.pos).Select(t, ident())); |
mcimadamore@1165 | 1179 | t = typeArgumentsOpt(t); |
mcimadamore@1165 | 1180 | } |
mcimadamore@1352 | 1181 | t = bracketsOpt(t); |
mcimadamore@1352 | 1182 | if (token.kind != COLCOL) { |
mcimadamore@1165 | 1183 | //method reference expected here |
mcimadamore@1165 | 1184 | t = illegal(); |
mcimadamore@1165 | 1185 | } |
mcimadamore@1165 | 1186 | mode = EXPR; |
mcimadamore@1165 | 1187 | return term3Rest(t, typeArgs); |
mcimadamore@1165 | 1188 | } |
mcimadamore@1165 | 1189 | break loop; |
mcimadamore@1144 | 1190 | default: |
mcimadamore@1144 | 1191 | break loop; |
duke@1 | 1192 | } |
duke@1 | 1193 | } |
duke@1 | 1194 | } |
duke@1 | 1195 | if (typeArgs != null) illegal(); |
duke@1 | 1196 | t = typeArgumentsOpt(t); |
duke@1 | 1197 | break; |
duke@1 | 1198 | case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT: |
duke@1 | 1199 | case DOUBLE: case BOOLEAN: |
duke@1 | 1200 | if (typeArgs != null) illegal(); |
duke@1 | 1201 | t = bracketsSuffix(bracketsOpt(basicType())); |
duke@1 | 1202 | break; |
duke@1 | 1203 | case VOID: |
duke@1 | 1204 | if (typeArgs != null) illegal(); |
duke@1 | 1205 | if ((mode & EXPR) != 0) { |
mcimadamore@1113 | 1206 | nextToken(); |
mcimadamore@1113 | 1207 | if (token.kind == DOT) { |
duke@1 | 1208 | JCPrimitiveTypeTree ti = toP(F.at(pos).TypeIdent(TypeTags.VOID)); |
duke@1 | 1209 | t = bracketsSuffix(ti); |
duke@1 | 1210 | } else { |
duke@1 | 1211 | return illegal(pos); |
duke@1 | 1212 | } |
duke@1 | 1213 | } else { |
jrose@267 | 1214 | // Support the corner case of myMethodHandle.<void>invoke() by passing |
jrose@267 | 1215 | // a void type (like other primitive types) to the next phase. |
jrose@267 | 1216 | // The error will be reported in Attr.attribTypes or Attr.visitApply. |
jrose@267 | 1217 | JCPrimitiveTypeTree ti = to(F.at(pos).TypeIdent(TypeTags.VOID)); |
mcimadamore@1113 | 1218 | nextToken(); |
jrose@267 | 1219 | return ti; |
jrose@267 | 1220 | //return illegal(); |
duke@1 | 1221 | } |
duke@1 | 1222 | break; |
duke@1 | 1223 | default: |
duke@1 | 1224 | return illegal(); |
duke@1 | 1225 | } |
mcimadamore@1144 | 1226 | return term3Rest(t, typeArgs); |
mcimadamore@1144 | 1227 | } |
mcimadamore@1144 | 1228 | |
mcimadamore@1144 | 1229 | JCExpression term3Rest(JCExpression t, List<JCExpression> typeArgs) { |
duke@1 | 1230 | if (typeArgs != null) illegal(); |
duke@1 | 1231 | while (true) { |
mcimadamore@1113 | 1232 | int pos1 = token.pos; |
mcimadamore@1113 | 1233 | if (token.kind == LBRACKET) { |
mcimadamore@1113 | 1234 | nextToken(); |
duke@1 | 1235 | if ((mode & TYPE) != 0) { |
duke@1 | 1236 | int oldmode = mode; |
duke@1 | 1237 | mode = TYPE; |
mcimadamore@1113 | 1238 | if (token.kind == RBRACKET) { |
mcimadamore@1113 | 1239 | nextToken(); |
jjg@722 | 1240 | t = bracketsOpt(t); |
duke@1 | 1241 | t = toP(F.at(pos1).TypeArray(t)); |
mcimadamore@1352 | 1242 | if (token.kind == COLCOL) { |
mcimadamore@1352 | 1243 | mode = EXPR; |
mcimadamore@1352 | 1244 | continue; |
mcimadamore@1352 | 1245 | } |
duke@1 | 1246 | return t; |
duke@1 | 1247 | } |
duke@1 | 1248 | mode = oldmode; |
duke@1 | 1249 | } |
duke@1 | 1250 | if ((mode & EXPR) != 0) { |
duke@1 | 1251 | mode = EXPR; |
duke@1 | 1252 | JCExpression t1 = term(); |
duke@1 | 1253 | t = to(F.at(pos1).Indexed(t, t1)); |
duke@1 | 1254 | } |
duke@1 | 1255 | accept(RBRACKET); |
mcimadamore@1113 | 1256 | } else if (token.kind == DOT) { |
mcimadamore@1113 | 1257 | nextToken(); |
duke@1 | 1258 | typeArgs = typeArgumentsOpt(EXPR); |
mcimadamore@1113 | 1259 | if (token.kind == SUPER && (mode & EXPR) != 0) { |
duke@1 | 1260 | mode = EXPR; |
duke@1 | 1261 | t = to(F.at(pos1).Select(t, names._super)); |
mcimadamore@1113 | 1262 | nextToken(); |
duke@1 | 1263 | t = arguments(typeArgs, t); |
duke@1 | 1264 | typeArgs = null; |
mcimadamore@1113 | 1265 | } else if (token.kind == NEW && (mode & EXPR) != 0) { |
duke@1 | 1266 | if (typeArgs != null) return illegal(); |
duke@1 | 1267 | mode = EXPR; |
mcimadamore@1113 | 1268 | int pos2 = token.pos; |
mcimadamore@1113 | 1269 | nextToken(); |
mcimadamore@1113 | 1270 | if (token.kind == LT) typeArgs = typeArguments(false); |
duke@1 | 1271 | t = innerCreator(pos2, typeArgs, t); |
duke@1 | 1272 | typeArgs = null; |
duke@1 | 1273 | } else { |
duke@1 | 1274 | t = toP(F.at(pos1).Select(t, ident())); |
duke@1 | 1275 | t = argumentsOpt(typeArgs, typeArgumentsOpt(t)); |
duke@1 | 1276 | typeArgs = null; |
duke@1 | 1277 | } |
mcimadamore@1352 | 1278 | } else if ((mode & EXPR) != 0 && token.kind == COLCOL) { |
mcimadamore@1145 | 1279 | mode = EXPR; |
mcimadamore@1145 | 1280 | if (typeArgs != null) return illegal(); |
mcimadamore@1352 | 1281 | accept(COLCOL); |
mcimadamore@1145 | 1282 | t = memberReferenceSuffix(pos1, t); |
duke@1 | 1283 | } else { |
duke@1 | 1284 | break; |
duke@1 | 1285 | } |
duke@1 | 1286 | } |
mcimadamore@1113 | 1287 | while ((token.kind == PLUSPLUS || token.kind == SUBSUB) && (mode & EXPR) != 0) { |
duke@1 | 1288 | mode = EXPR; |
mcimadamore@1113 | 1289 | t = to(F.at(token.pos).Unary( |
jjg@1127 | 1290 | token.kind == PLUSPLUS ? POSTINC : POSTDEC, t)); |
mcimadamore@1113 | 1291 | nextToken(); |
duke@1 | 1292 | } |
duke@1 | 1293 | return toP(t); |
duke@1 | 1294 | } |
duke@1 | 1295 | |
mcimadamore@1165 | 1296 | /** |
mcimadamore@1165 | 1297 | * If we see an identifier followed by a '<' it could be an unbound |
mcimadamore@1165 | 1298 | * method reference or a binary expression. To disambiguate, look for a |
mcimadamore@1165 | 1299 | * matching '>' and see if the subsequent terminal is either '.' or '#'. |
mcimadamore@1165 | 1300 | */ |
mcimadamore@1165 | 1301 | @SuppressWarnings("fallthrough") |
mcimadamore@1165 | 1302 | boolean isUnboundMemberRef() { |
mcimadamore@1165 | 1303 | int pos = 0, depth = 0; |
mcimadamore@1165 | 1304 | for (Token t = S.token(pos) ; ; t = S.token(++pos)) { |
mcimadamore@1165 | 1305 | switch (t.kind) { |
mcimadamore@1165 | 1306 | case IDENTIFIER: case QUES: case EXTENDS: case SUPER: |
mcimadamore@1165 | 1307 | case DOT: case RBRACKET: case LBRACKET: case COMMA: |
mcimadamore@1165 | 1308 | case BYTE: case SHORT: case INT: case LONG: case FLOAT: |
mcimadamore@1165 | 1309 | case DOUBLE: case BOOLEAN: case CHAR: |
mcimadamore@1165 | 1310 | break; |
mcimadamore@1165 | 1311 | case LT: |
mcimadamore@1165 | 1312 | depth++; break; |
mcimadamore@1165 | 1313 | case GTGTGT: |
mcimadamore@1165 | 1314 | depth--; |
mcimadamore@1165 | 1315 | case GTGT: |
mcimadamore@1165 | 1316 | depth--; |
mcimadamore@1165 | 1317 | case GT: |
mcimadamore@1165 | 1318 | depth--; |
mcimadamore@1165 | 1319 | if (depth == 0) { |
mcimadamore@1352 | 1320 | TokenKind nextKind = S.token(pos + 1).kind; |
mcimadamore@1165 | 1321 | return |
mcimadamore@1352 | 1322 | nextKind == TokenKind.DOT || |
mcimadamore@1352 | 1323 | nextKind == TokenKind.LBRACKET || |
mcimadamore@1352 | 1324 | nextKind == TokenKind.COLCOL; |
mcimadamore@1165 | 1325 | } |
mcimadamore@1165 | 1326 | break; |
mcimadamore@1165 | 1327 | default: |
mcimadamore@1165 | 1328 | return false; |
mcimadamore@1165 | 1329 | } |
mcimadamore@1165 | 1330 | } |
mcimadamore@1165 | 1331 | } |
mcimadamore@1165 | 1332 | |
mcimadamore@1144 | 1333 | JCExpression lambdaExpressionOrStatement(JCVariableDecl firstParam, int pos) { |
mcimadamore@1144 | 1334 | ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
mcimadamore@1144 | 1335 | params.append(firstParam); |
mcimadamore@1144 | 1336 | JCVariableDecl lastParam = firstParam; |
mcimadamore@1144 | 1337 | while ((lastParam.mods.flags & Flags.VARARGS) == 0 && token.kind == COMMA) { |
mcimadamore@1144 | 1338 | nextToken(); |
mcimadamore@1144 | 1339 | params.append(lastParam = formalParameter()); |
mcimadamore@1144 | 1340 | } |
mcimadamore@1144 | 1341 | accept(RPAREN); |
mcimadamore@1144 | 1342 | return lambdaExpressionOrStatementRest(params.toList(), pos); |
mcimadamore@1144 | 1343 | } |
mcimadamore@1144 | 1344 | |
mcimadamore@1144 | 1345 | JCExpression lambdaExpressionOrStatement(boolean hasParens, boolean explicitParams, int pos) { |
mcimadamore@1144 | 1346 | List<JCVariableDecl> params = explicitParams ? |
mcimadamore@1144 | 1347 | formalParameters() : |
mcimadamore@1144 | 1348 | implicitParameters(hasParens); |
mcimadamore@1144 | 1349 | |
mcimadamore@1144 | 1350 | return lambdaExpressionOrStatementRest(params, pos); |
mcimadamore@1144 | 1351 | } |
mcimadamore@1144 | 1352 | |
mcimadamore@1144 | 1353 | JCExpression lambdaExpressionOrStatementRest(List<JCVariableDecl> args, int pos) { |
mcimadamore@1144 | 1354 | checkLambda(); |
mcimadamore@1144 | 1355 | accept(ARROW); |
mcimadamore@1144 | 1356 | |
mcimadamore@1144 | 1357 | return token.kind == LBRACE ? |
mcimadamore@1144 | 1358 | lambdaStatement(args, pos, pos) : |
mcimadamore@1144 | 1359 | lambdaExpression(args, pos); |
mcimadamore@1144 | 1360 | } |
mcimadamore@1144 | 1361 | |
mcimadamore@1144 | 1362 | JCExpression lambdaStatement(List<JCVariableDecl> args, int pos, int pos2) { |
mcimadamore@1144 | 1363 | JCBlock block = block(pos2, 0); |
mcimadamore@1144 | 1364 | return toP(F.at(pos).Lambda(args, block)); |
mcimadamore@1144 | 1365 | } |
mcimadamore@1144 | 1366 | |
mcimadamore@1144 | 1367 | JCExpression lambdaExpression(List<JCVariableDecl> args, int pos) { |
mcimadamore@1144 | 1368 | JCTree expr = parseExpression(); |
mcimadamore@1144 | 1369 | return toP(F.at(pos).Lambda(args, expr)); |
mcimadamore@1144 | 1370 | } |
mcimadamore@1144 | 1371 | |
duke@1 | 1372 | /** SuperSuffix = Arguments | "." [TypeArguments] Ident [Arguments] |
duke@1 | 1373 | */ |
duke@1 | 1374 | JCExpression superSuffix(List<JCExpression> typeArgs, JCExpression t) { |
mcimadamore@1113 | 1375 | nextToken(); |
mcimadamore@1113 | 1376 | if (token.kind == LPAREN || typeArgs != null) { |
duke@1 | 1377 | t = arguments(typeArgs, t); |
mcimadamore@1352 | 1378 | } else if (token.kind == COLCOL) { |
mcimadamore@1145 | 1379 | if (typeArgs != null) return illegal(); |
mcimadamore@1145 | 1380 | t = memberReferenceSuffix(t); |
duke@1 | 1381 | } else { |
mcimadamore@1113 | 1382 | int pos = token.pos; |
duke@1 | 1383 | accept(DOT); |
mcimadamore@1113 | 1384 | typeArgs = (token.kind == LT) ? typeArguments(false) : null; |
duke@1 | 1385 | t = toP(F.at(pos).Select(t, ident())); |
duke@1 | 1386 | t = argumentsOpt(typeArgs, t); |
duke@1 | 1387 | } |
duke@1 | 1388 | return t; |
duke@1 | 1389 | } |
duke@1 | 1390 | |
duke@1 | 1391 | /** BasicType = BYTE | SHORT | CHAR | INT | LONG | FLOAT | DOUBLE | BOOLEAN |
duke@1 | 1392 | */ |
duke@1 | 1393 | JCPrimitiveTypeTree basicType() { |
mcimadamore@1113 | 1394 | JCPrimitiveTypeTree t = to(F.at(token.pos).TypeIdent(typetag(token.kind))); |
mcimadamore@1113 | 1395 | nextToken(); |
duke@1 | 1396 | return t; |
duke@1 | 1397 | } |
duke@1 | 1398 | |
duke@1 | 1399 | /** ArgumentsOpt = [ Arguments ] |
duke@1 | 1400 | */ |
duke@1 | 1401 | JCExpression argumentsOpt(List<JCExpression> typeArgs, JCExpression t) { |
mcimadamore@1113 | 1402 | if ((mode & EXPR) != 0 && token.kind == LPAREN || typeArgs != null) { |
duke@1 | 1403 | mode = EXPR; |
duke@1 | 1404 | return arguments(typeArgs, t); |
duke@1 | 1405 | } else { |
duke@1 | 1406 | return t; |
duke@1 | 1407 | } |
duke@1 | 1408 | } |
duke@1 | 1409 | |
duke@1 | 1410 | /** Arguments = "(" [Expression { COMMA Expression }] ")" |
duke@1 | 1411 | */ |
duke@1 | 1412 | List<JCExpression> arguments() { |
duke@1 | 1413 | ListBuffer<JCExpression> args = lb(); |
mcimadamore@1113 | 1414 | if (token.kind == LPAREN) { |
mcimadamore@1113 | 1415 | nextToken(); |
mcimadamore@1113 | 1416 | if (token.kind != RPAREN) { |
jjg@111 | 1417 | args.append(parseExpression()); |
mcimadamore@1113 | 1418 | while (token.kind == COMMA) { |
mcimadamore@1113 | 1419 | nextToken(); |
jjg@111 | 1420 | args.append(parseExpression()); |
duke@1 | 1421 | } |
duke@1 | 1422 | } |
duke@1 | 1423 | accept(RPAREN); |
duke@1 | 1424 | } else { |
mcimadamore@1113 | 1425 | syntaxError(token.pos, "expected", LPAREN); |
duke@1 | 1426 | } |
duke@1 | 1427 | return args.toList(); |
duke@1 | 1428 | } |
duke@1 | 1429 | |
duke@1 | 1430 | JCMethodInvocation arguments(List<JCExpression> typeArgs, JCExpression t) { |
mcimadamore@1113 | 1431 | int pos = token.pos; |
duke@1 | 1432 | List<JCExpression> args = arguments(); |
duke@1 | 1433 | return toP(F.at(pos).Apply(typeArgs, t, args)); |
duke@1 | 1434 | } |
duke@1 | 1435 | |
duke@1 | 1436 | /** TypeArgumentsOpt = [ TypeArguments ] |
duke@1 | 1437 | */ |
duke@1 | 1438 | JCExpression typeArgumentsOpt(JCExpression t) { |
mcimadamore@1113 | 1439 | if (token.kind == LT && |
duke@1 | 1440 | (mode & TYPE) != 0 && |
duke@1 | 1441 | (mode & NOPARAMS) == 0) { |
duke@1 | 1442 | mode = TYPE; |
duke@1 | 1443 | checkGenerics(); |
mcimadamore@948 | 1444 | return typeArguments(t, false); |
duke@1 | 1445 | } else { |
duke@1 | 1446 | return t; |
duke@1 | 1447 | } |
duke@1 | 1448 | } |
duke@1 | 1449 | List<JCExpression> typeArgumentsOpt() { |
duke@1 | 1450 | return typeArgumentsOpt(TYPE); |
duke@1 | 1451 | } |
duke@1 | 1452 | |
duke@1 | 1453 | List<JCExpression> typeArgumentsOpt(int useMode) { |
mcimadamore@1113 | 1454 | if (token.kind == LT) { |
duke@1 | 1455 | checkGenerics(); |
duke@1 | 1456 | if ((mode & useMode) == 0 || |
duke@1 | 1457 | (mode & NOPARAMS) != 0) { |
duke@1 | 1458 | illegal(); |
duke@1 | 1459 | } |
duke@1 | 1460 | mode = useMode; |
mcimadamore@948 | 1461 | return typeArguments(false); |
duke@1 | 1462 | } |
duke@1 | 1463 | return null; |
duke@1 | 1464 | } |
duke@1 | 1465 | |
jjg@1326 | 1466 | /** |
jjg@1326 | 1467 | * {@literal |
jjg@1326 | 1468 | * TypeArguments = "<" TypeArgument {"," TypeArgument} ">" |
jjg@1326 | 1469 | * } |
duke@1 | 1470 | */ |
mcimadamore@948 | 1471 | List<JCExpression> typeArguments(boolean diamondAllowed) { |
mcimadamore@1113 | 1472 | if (token.kind == LT) { |
mcimadamore@1113 | 1473 | nextToken(); |
mcimadamore@1113 | 1474 | if (token.kind == GT && diamondAllowed) { |
mcimadamore@537 | 1475 | checkDiamond(); |
mcimadamore@948 | 1476 | mode |= DIAMOND; |
mcimadamore@1113 | 1477 | nextToken(); |
mcimadamore@537 | 1478 | return List.nil(); |
mcimadamore@948 | 1479 | } else { |
mcimadamore@948 | 1480 | ListBuffer<JCExpression> args = ListBuffer.lb(); |
jjg@111 | 1481 | args.append(((mode & EXPR) == 0) ? typeArgument() : parseType()); |
mcimadamore@1113 | 1482 | while (token.kind == COMMA) { |
mcimadamore@1113 | 1483 | nextToken(); |
mcimadamore@948 | 1484 | args.append(((mode & EXPR) == 0) ? typeArgument() : parseType()); |
mcimadamore@948 | 1485 | } |
mcimadamore@1113 | 1486 | switch (token.kind) { |
mcimadamore@1113 | 1487 | |
mcimadamore@1113 | 1488 | case GTGTGTEQ: case GTGTEQ: case GTEQ: |
mcimadamore@1113 | 1489 | case GTGTGT: case GTGT: |
mcimadamore@1113 | 1490 | token = S.split(); |
mcimadamore@948 | 1491 | break; |
ksrini@1074 | 1492 | case GT: |
mcimadamore@1113 | 1493 | nextToken(); |
ksrini@1074 | 1494 | break; |
mcimadamore@948 | 1495 | default: |
mcimadamore@1113 | 1496 | args.append(syntaxError(token.pos, "expected", GT)); |
mcimadamore@948 | 1497 | break; |
mcimadamore@948 | 1498 | } |
mcimadamore@948 | 1499 | return args.toList(); |
duke@1 | 1500 | } |
duke@1 | 1501 | } else { |
mcimadamore@1113 | 1502 | return List.<JCExpression>of(syntaxError(token.pos, "expected", LT)); |
duke@1 | 1503 | } |
duke@1 | 1504 | } |
duke@1 | 1505 | |
jjg@1326 | 1506 | /** |
jjg@1326 | 1507 | * {@literal |
jjg@1326 | 1508 | * TypeArgument = Type |
jjg@722 | 1509 | * | "?" |
jjg@722 | 1510 | * | "?" EXTENDS Type {"&" Type} |
jjg@722 | 1511 | * | "?" SUPER Type |
jjg@1326 | 1512 | * } |
duke@1 | 1513 | */ |
duke@1 | 1514 | JCExpression typeArgument() { |
mcimadamore@1113 | 1515 | if (token.kind != QUES) return parseType(); |
mcimadamore@1113 | 1516 | int pos = token.pos; |
mcimadamore@1113 | 1517 | nextToken(); |
mcimadamore@1113 | 1518 | if (token.kind == EXTENDS) { |
jjg@482 | 1519 | TypeBoundKind t = to(F.at(pos).TypeBoundKind(BoundKind.EXTENDS)); |
mcimadamore@1113 | 1520 | nextToken(); |
jjg@482 | 1521 | JCExpression bound = parseType(); |
jjg@722 | 1522 | return F.at(pos).Wildcard(t, bound); |
mcimadamore@1113 | 1523 | } else if (token.kind == SUPER) { |
jjg@482 | 1524 | TypeBoundKind t = to(F.at(pos).TypeBoundKind(BoundKind.SUPER)); |
mcimadamore@1113 | 1525 | nextToken(); |
jjg@482 | 1526 | JCExpression bound = parseType(); |
jjg@722 | 1527 | return F.at(pos).Wildcard(t, bound); |
mcimadamore@1113 | 1528 | } else if (token.kind == IDENTIFIER) { |
duke@1 | 1529 | //error recovery |
duke@1 | 1530 | TypeBoundKind t = F.at(Position.NOPOS).TypeBoundKind(BoundKind.UNBOUND); |
duke@1 | 1531 | JCExpression wc = toP(F.at(pos).Wildcard(t, null)); |
mcimadamore@1113 | 1532 | JCIdent id = toP(F.at(token.pos).Ident(ident())); |
ksrini@1074 | 1533 | JCErroneous err = F.at(pos).Erroneous(List.<JCTree>of(wc, id)); |
ksrini@1074 | 1534 | reportSyntaxError(err, "expected3", GT, EXTENDS, SUPER); |
ksrini@1074 | 1535 | return err; |
duke@1 | 1536 | } else { |
jjg@482 | 1537 | TypeBoundKind t = toP(F.at(pos).TypeBoundKind(BoundKind.UNBOUND)); |
jjg@722 | 1538 | return toP(F.at(pos).Wildcard(t, null)); |
duke@1 | 1539 | } |
duke@1 | 1540 | } |
duke@1 | 1541 | |
mcimadamore@948 | 1542 | JCTypeApply typeArguments(JCExpression t, boolean diamondAllowed) { |
mcimadamore@1113 | 1543 | int pos = token.pos; |
mcimadamore@948 | 1544 | List<JCExpression> args = typeArguments(diamondAllowed); |
duke@1 | 1545 | return toP(F.at(pos).TypeApply(t, args)); |
duke@1 | 1546 | } |
duke@1 | 1547 | |
jjg@722 | 1548 | /** BracketsOpt = {"[" "]"} |
duke@1 | 1549 | */ |
jjg@722 | 1550 | private JCExpression bracketsOpt(JCExpression t) { |
mcimadamore@1113 | 1551 | if (token.kind == LBRACKET) { |
mcimadamore@1113 | 1552 | int pos = token.pos; |
mcimadamore@1113 | 1553 | nextToken(); |
jjg@722 | 1554 | t = bracketsOptCont(t, pos); |
jjg@722 | 1555 | F.at(pos); |
duke@1 | 1556 | } |
duke@1 | 1557 | return t; |
duke@1 | 1558 | } |
duke@1 | 1559 | |
jjg@722 | 1560 | private JCArrayTypeTree bracketsOptCont(JCExpression t, int pos) { |
duke@1 | 1561 | accept(RBRACKET); |
jjg@722 | 1562 | t = bracketsOpt(t); |
duke@1 | 1563 | return toP(F.at(pos).TypeArray(t)); |
duke@1 | 1564 | } |
duke@1 | 1565 | |
duke@1 | 1566 | /** BracketsSuffixExpr = "." CLASS |
duke@1 | 1567 | * BracketsSuffixType = |
duke@1 | 1568 | */ |
duke@1 | 1569 | JCExpression bracketsSuffix(JCExpression t) { |
mcimadamore@1113 | 1570 | if ((mode & EXPR) != 0 && token.kind == DOT) { |
duke@1 | 1571 | mode = EXPR; |
mcimadamore@1113 | 1572 | int pos = token.pos; |
mcimadamore@1113 | 1573 | nextToken(); |
duke@1 | 1574 | accept(CLASS); |
ksrini@1138 | 1575 | if (token.pos == endPosTable.errorEndPos) { |
duke@1 | 1576 | // error recovery |
duke@1 | 1577 | Name name = null; |
mcimadamore@1113 | 1578 | if (token.kind == IDENTIFIER) { |
mcimadamore@1113 | 1579 | name = token.name(); |
mcimadamore@1113 | 1580 | nextToken(); |
duke@1 | 1581 | } else { |
duke@1 | 1582 | name = names.error; |
duke@1 | 1583 | } |
duke@1 | 1584 | t = F.at(pos).Erroneous(List.<JCTree>of(toP(F.at(pos).Select(t, name)))); |
duke@1 | 1585 | } else { |
duke@1 | 1586 | t = toP(F.at(pos).Select(t, names._class)); |
duke@1 | 1587 | } |
duke@1 | 1588 | } else if ((mode & TYPE) != 0) { |
mcimadamore@1352 | 1589 | if (token.kind != COLCOL) { |
mcimadamore@1352 | 1590 | mode = TYPE; |
mcimadamore@1352 | 1591 | } |
mcimadamore@1352 | 1592 | } else if (token.kind != COLCOL) { |
mcimadamore@1113 | 1593 | syntaxError(token.pos, "dot.class.expected"); |
duke@1 | 1594 | } |
duke@1 | 1595 | return t; |
duke@1 | 1596 | } |
duke@1 | 1597 | |
mcimadamore@1145 | 1598 | /** |
mcimadamore@1352 | 1599 | * MemberReferenceSuffix = "::" [TypeArguments] Ident |
mcimadamore@1352 | 1600 | * | "::" [TypeArguments] "new" |
mcimadamore@1145 | 1601 | */ |
mcimadamore@1145 | 1602 | JCExpression memberReferenceSuffix(JCExpression t) { |
mcimadamore@1145 | 1603 | int pos1 = token.pos; |
mcimadamore@1352 | 1604 | accept(COLCOL); |
mcimadamore@1145 | 1605 | return memberReferenceSuffix(pos1, t); |
mcimadamore@1145 | 1606 | } |
mcimadamore@1145 | 1607 | |
mcimadamore@1145 | 1608 | JCExpression memberReferenceSuffix(int pos1, JCExpression t) { |
mcimadamore@1145 | 1609 | checkMethodReferences(); |
mcimadamore@1145 | 1610 | mode = EXPR; |
mcimadamore@1145 | 1611 | List<JCExpression> typeArgs = null; |
mcimadamore@1145 | 1612 | if (token.kind == LT) { |
mcimadamore@1145 | 1613 | typeArgs = typeArguments(false); |
mcimadamore@1145 | 1614 | } |
mcimadamore@1145 | 1615 | Name refName = null; |
mcimadamore@1145 | 1616 | ReferenceMode refMode = null; |
mcimadamore@1145 | 1617 | if (token.kind == NEW) { |
mcimadamore@1145 | 1618 | refMode = ReferenceMode.NEW; |
mcimadamore@1145 | 1619 | refName = names.init; |
mcimadamore@1145 | 1620 | nextToken(); |
mcimadamore@1145 | 1621 | } else { |
mcimadamore@1145 | 1622 | refMode = ReferenceMode.INVOKE; |
mcimadamore@1145 | 1623 | refName = ident(); |
mcimadamore@1145 | 1624 | } |
mcimadamore@1145 | 1625 | return toP(F.at(t.getStartPosition()).Reference(refMode, refName, t, typeArgs)); |
mcimadamore@1145 | 1626 | } |
mcimadamore@1145 | 1627 | |
jjg@722 | 1628 | /** Creator = Qualident [TypeArguments] ( ArrayCreatorRest | ClassCreatorRest ) |
duke@1 | 1629 | */ |
duke@1 | 1630 | JCExpression creator(int newpos, List<JCExpression> typeArgs) { |
mcimadamore@1113 | 1631 | switch (token.kind) { |
duke@1 | 1632 | case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT: |
duke@1 | 1633 | case DOUBLE: case BOOLEAN: |
jjg@722 | 1634 | if (typeArgs == null) |
jjg@722 | 1635 | return arrayCreatorRest(newpos, basicType()); |
duke@1 | 1636 | break; |
duke@1 | 1637 | default: |
duke@1 | 1638 | } |
duke@1 | 1639 | JCExpression t = qualident(); |
duke@1 | 1640 | int oldmode = mode; |
mcimadamore@948 | 1641 | mode = TYPE; |
mcimadamore@948 | 1642 | boolean diamondFound = false; |
mcimadamore@1061 | 1643 | int lastTypeargsPos = -1; |
mcimadamore@1113 | 1644 | if (token.kind == LT) { |
duke@1 | 1645 | checkGenerics(); |
mcimadamore@1113 | 1646 | lastTypeargsPos = token.pos; |
mcimadamore@948 | 1647 | t = typeArguments(t, true); |
mcimadamore@948 | 1648 | diamondFound = (mode & DIAMOND) != 0; |
duke@1 | 1649 | } |
mcimadamore@1113 | 1650 | while (token.kind == DOT) { |
mcimadamore@948 | 1651 | if (diamondFound) { |
mcimadamore@948 | 1652 | //cannot select after a diamond |
ksrini@1074 | 1653 | illegal(); |
mcimadamore@948 | 1654 | } |
mcimadamore@1113 | 1655 | int pos = token.pos; |
mcimadamore@1113 | 1656 | nextToken(); |
duke@1 | 1657 | t = toP(F.at(pos).Select(t, ident())); |
mcimadamore@1113 | 1658 | if (token.kind == LT) { |
mcimadamore@1113 | 1659 | lastTypeargsPos = token.pos; |
duke@1 | 1660 | checkGenerics(); |
mcimadamore@948 | 1661 | t = typeArguments(t, true); |
mcimadamore@948 | 1662 | diamondFound = (mode & DIAMOND) != 0; |
duke@1 | 1663 | } |
duke@1 | 1664 | } |
duke@1 | 1665 | mode = oldmode; |
mcimadamore@1113 | 1666 | if (token.kind == LBRACKET) { |
duke@1 | 1667 | JCExpression e = arrayCreatorRest(newpos, t); |
mcimadamore@1061 | 1668 | if (diamondFound) { |
mcimadamore@1061 | 1669 | reportSyntaxError(lastTypeargsPos, "cannot.create.array.with.diamond"); |
mcimadamore@1061 | 1670 | return toP(F.at(newpos).Erroneous(List.of(e))); |
mcimadamore@1061 | 1671 | } |
mcimadamore@1061 | 1672 | else if (typeArgs != null) { |
duke@1 | 1673 | int pos = newpos; |
duke@1 | 1674 | if (!typeArgs.isEmpty() && typeArgs.head.pos != Position.NOPOS) { |
duke@1 | 1675 | // note: this should always happen but we should |
duke@1 | 1676 | // not rely on this as the parser is continuously |
duke@1 | 1677 | // modified to improve error recovery. |
duke@1 | 1678 | pos = typeArgs.head.pos; |
duke@1 | 1679 | } |
mcimadamore@1113 | 1680 | setErrorEndPos(S.prevToken().endPos); |
ksrini@1074 | 1681 | JCErroneous err = F.at(pos).Erroneous(typeArgs.prepend(e)); |
ksrini@1074 | 1682 | reportSyntaxError(err, "cannot.create.array.with.type.arguments"); |
ksrini@1074 | 1683 | return toP(err); |
duke@1 | 1684 | } |
duke@1 | 1685 | return e; |
mcimadamore@1113 | 1686 | } else if (token.kind == LPAREN) { |
jjg@722 | 1687 | return classCreatorRest(newpos, null, typeArgs, t); |
duke@1 | 1688 | } else { |
mcimadamore@1113 | 1689 | setErrorEndPos(token.pos); |
mcimadamore@1113 | 1690 | reportSyntaxError(token.pos, "expected2", LPAREN, LBRACKET); |
duke@1 | 1691 | t = toP(F.at(newpos).NewClass(null, typeArgs, t, List.<JCExpression>nil(), null)); |
duke@1 | 1692 | return toP(F.at(newpos).Erroneous(List.<JCTree>of(t))); |
duke@1 | 1693 | } |
duke@1 | 1694 | } |
duke@1 | 1695 | |
duke@1 | 1696 | /** InnerCreator = Ident [TypeArguments] ClassCreatorRest |
duke@1 | 1697 | */ |
duke@1 | 1698 | JCExpression innerCreator(int newpos, List<JCExpression> typeArgs, JCExpression encl) { |
mcimadamore@1113 | 1699 | JCExpression t = toP(F.at(token.pos).Ident(ident())); |
mcimadamore@1113 | 1700 | if (token.kind == LT) { |
mcimadamore@537 | 1701 | int oldmode = mode; |
duke@1 | 1702 | checkGenerics(); |
mcimadamore@948 | 1703 | t = typeArguments(t, true); |
mcimadamore@537 | 1704 | mode = oldmode; |
duke@1 | 1705 | } |
duke@1 | 1706 | return classCreatorRest(newpos, encl, typeArgs, t); |
duke@1 | 1707 | } |
duke@1 | 1708 | |
jjg@722 | 1709 | /** ArrayCreatorRest = "[" ( "]" BracketsOpt ArrayInitializer |
jjg@722 | 1710 | * | Expression "]" {"[" Expression "]"} BracketsOpt ) |
duke@1 | 1711 | */ |
duke@1 | 1712 | JCExpression arrayCreatorRest(int newpos, JCExpression elemtype) { |
duke@1 | 1713 | accept(LBRACKET); |
mcimadamore@1113 | 1714 | if (token.kind == RBRACKET) { |
duke@1 | 1715 | accept(RBRACKET); |
jjg@722 | 1716 | elemtype = bracketsOpt(elemtype); |
mcimadamore@1113 | 1717 | if (token.kind == LBRACE) { |
jjg@722 | 1718 | return arrayInitializer(newpos, elemtype); |
duke@1 | 1719 | } else { |
ksrini@1074 | 1720 | JCExpression t = toP(F.at(newpos).NewArray(elemtype, List.<JCExpression>nil(), null)); |
mcimadamore@1113 | 1721 | return syntaxError(token.pos, List.<JCTree>of(t), "array.dimension.missing"); |
duke@1 | 1722 | } |
duke@1 | 1723 | } else { |
duke@1 | 1724 | ListBuffer<JCExpression> dims = new ListBuffer<JCExpression>(); |
jjg@111 | 1725 | dims.append(parseExpression()); |
duke@1 | 1726 | accept(RBRACKET); |
mcimadamore@1113 | 1727 | while (token.kind == LBRACKET) { |
mcimadamore@1113 | 1728 | int pos = token.pos; |
mcimadamore@1113 | 1729 | nextToken(); |
mcimadamore@1113 | 1730 | if (token.kind == RBRACKET) { |
jjg@722 | 1731 | elemtype = bracketsOptCont(elemtype, pos); |
duke@1 | 1732 | } else { |
jjg@722 | 1733 | dims.append(parseExpression()); |
jjg@722 | 1734 | accept(RBRACKET); |
duke@1 | 1735 | } |
duke@1 | 1736 | } |
jjg@722 | 1737 | return toP(F.at(newpos).NewArray(elemtype, dims.toList(), null)); |
duke@1 | 1738 | } |
duke@1 | 1739 | } |
duke@1 | 1740 | |
duke@1 | 1741 | /** ClassCreatorRest = Arguments [ClassBody] |
duke@1 | 1742 | */ |
jjg@308 | 1743 | JCNewClass classCreatorRest(int newpos, |
duke@1 | 1744 | JCExpression encl, |
duke@1 | 1745 | List<JCExpression> typeArgs, |
duke@1 | 1746 | JCExpression t) |
duke@1 | 1747 | { |
duke@1 | 1748 | List<JCExpression> args = arguments(); |
duke@1 | 1749 | JCClassDecl body = null; |
mcimadamore@1113 | 1750 | if (token.kind == LBRACE) { |
mcimadamore@1113 | 1751 | int pos = token.pos; |
duke@1 | 1752 | List<JCTree> defs = classOrInterfaceBody(names.empty, false); |
duke@1 | 1753 | JCModifiers mods = F.at(Position.NOPOS).Modifiers(0); |
duke@1 | 1754 | body = toP(F.at(pos).AnonymousClassDef(mods, defs)); |
duke@1 | 1755 | } |
duke@1 | 1756 | return toP(F.at(newpos).NewClass(encl, typeArgs, t, args, body)); |
duke@1 | 1757 | } |
duke@1 | 1758 | |
duke@1 | 1759 | /** ArrayInitializer = "{" [VariableInitializer {"," VariableInitializer}] [","] "}" |
duke@1 | 1760 | */ |
duke@1 | 1761 | JCExpression arrayInitializer(int newpos, JCExpression t) { |
duke@1 | 1762 | accept(LBRACE); |
duke@1 | 1763 | ListBuffer<JCExpression> elems = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 1764 | if (token.kind == COMMA) { |
mcimadamore@1113 | 1765 | nextToken(); |
mcimadamore@1113 | 1766 | } else if (token.kind != RBRACE) { |
duke@1 | 1767 | elems.append(variableInitializer()); |
mcimadamore@1113 | 1768 | while (token.kind == COMMA) { |
mcimadamore@1113 | 1769 | nextToken(); |
mcimadamore@1113 | 1770 | if (token.kind == RBRACE) break; |
duke@1 | 1771 | elems.append(variableInitializer()); |
duke@1 | 1772 | } |
duke@1 | 1773 | } |
duke@1 | 1774 | accept(RBRACE); |
duke@1 | 1775 | return toP(F.at(newpos).NewArray(t, List.<JCExpression>nil(), elems.toList())); |
duke@1 | 1776 | } |
duke@1 | 1777 | |
duke@1 | 1778 | /** VariableInitializer = ArrayInitializer | Expression |
duke@1 | 1779 | */ |
duke@1 | 1780 | public JCExpression variableInitializer() { |
mcimadamore@1113 | 1781 | return token.kind == LBRACE ? arrayInitializer(token.pos, null) : parseExpression(); |
duke@1 | 1782 | } |
duke@1 | 1783 | |
duke@1 | 1784 | /** ParExpression = "(" Expression ")" |
duke@1 | 1785 | */ |
duke@1 | 1786 | JCExpression parExpression() { |
ksrini@1138 | 1787 | int pos = token.pos; |
duke@1 | 1788 | accept(LPAREN); |
jjg@111 | 1789 | JCExpression t = parseExpression(); |
duke@1 | 1790 | accept(RPAREN); |
ksrini@1138 | 1791 | return toP(F.at(pos).Parens(t)); |
duke@1 | 1792 | } |
duke@1 | 1793 | |
duke@1 | 1794 | /** Block = "{" BlockStatements "}" |
duke@1 | 1795 | */ |
duke@1 | 1796 | JCBlock block(int pos, long flags) { |
duke@1 | 1797 | accept(LBRACE); |
duke@1 | 1798 | List<JCStatement> stats = blockStatements(); |
duke@1 | 1799 | JCBlock t = F.at(pos).Block(flags, stats); |
mcimadamore@1113 | 1800 | while (token.kind == CASE || token.kind == DEFAULT) { |
mcimadamore@1113 | 1801 | syntaxError("orphaned", token.kind); |
duke@1 | 1802 | switchBlockStatementGroups(); |
duke@1 | 1803 | } |
duke@1 | 1804 | // the Block node has a field "endpos" for first char of last token, which is |
duke@1 | 1805 | // usually but not necessarily the last char of the last token. |
mcimadamore@1113 | 1806 | t.endpos = token.pos; |
duke@1 | 1807 | accept(RBRACE); |
duke@1 | 1808 | return toP(t); |
duke@1 | 1809 | } |
duke@1 | 1810 | |
duke@1 | 1811 | public JCBlock block() { |
mcimadamore@1113 | 1812 | return block(token.pos, 0); |
duke@1 | 1813 | } |
duke@1 | 1814 | |
duke@1 | 1815 | /** BlockStatements = { BlockStatement } |
duke@1 | 1816 | * BlockStatement = LocalVariableDeclarationStatement |
duke@1 | 1817 | * | ClassOrInterfaceOrEnumDeclaration |
duke@1 | 1818 | * | [Ident ":"] Statement |
duke@1 | 1819 | * LocalVariableDeclarationStatement |
duke@1 | 1820 | * = { FINAL | '@' Annotation } Type VariableDeclarators ";" |
duke@1 | 1821 | */ |
duke@1 | 1822 | @SuppressWarnings("fallthrough") |
duke@1 | 1823 | List<JCStatement> blockStatements() { |
ksrini@1249 | 1824 | //todo: skip to anchor on error(?) |
duke@1 | 1825 | ListBuffer<JCStatement> stats = new ListBuffer<JCStatement>(); |
duke@1 | 1826 | while (true) { |
ksrini@1249 | 1827 | List<JCStatement> stat = blockStatement(); |
ksrini@1249 | 1828 | if (stat.isEmpty()) { |
duke@1 | 1829 | return stats.toList(); |
ksrini@1249 | 1830 | } else { |
ksrini@1249 | 1831 | if (token.pos <= endPosTable.errorEndPos) { |
ksrini@1249 | 1832 | skip(false, true, true, true); |
ksrini@1249 | 1833 | } |
ksrini@1249 | 1834 | stats.addAll(stat); |
ksrini@1249 | 1835 | } |
ksrini@1249 | 1836 | } |
ksrini@1249 | 1837 | } |
ksrini@1249 | 1838 | |
ksrini@1249 | 1839 | /* |
ksrini@1249 | 1840 | * This method parses a statement treating it as a block, relaxing the |
ksrini@1249 | 1841 | * JLS restrictions, allows us to parse more faulty code, doing so |
ksrini@1249 | 1842 | * enables us to provide better and accurate diagnostics to the user. |
ksrini@1249 | 1843 | */ |
ksrini@1249 | 1844 | JCStatement parseStatementAsBlock() { |
ksrini@1249 | 1845 | int pos = token.pos; |
ksrini@1249 | 1846 | List<JCStatement> stats = blockStatement(); |
ksrini@1249 | 1847 | if (stats.isEmpty()) { |
ksrini@1249 | 1848 | JCErroneous e = F.at(pos).Erroneous(); |
ksrini@1249 | 1849 | error(e, "illegal.start.of.stmt"); |
ksrini@1249 | 1850 | return F.at(pos).Exec(e); |
ksrini@1249 | 1851 | } else { |
ksrini@1249 | 1852 | JCStatement first = stats.head; |
ksrini@1249 | 1853 | String error = null; |
ksrini@1249 | 1854 | switch (first.getTag()) { |
ksrini@1249 | 1855 | case CLASSDEF: |
ksrini@1249 | 1856 | error = "class.not.allowed"; |
duke@1 | 1857 | break; |
ksrini@1249 | 1858 | case VARDEF: |
ksrini@1249 | 1859 | error = "variable.not.allowed"; |
duke@1 | 1860 | break; |
duke@1 | 1861 | } |
ksrini@1249 | 1862 | if (error != null) { |
ksrini@1249 | 1863 | error(first, error); |
ksrini@1249 | 1864 | List<JCBlock> blist = List.of(F.at(first.pos).Block(0, stats)); |
ksrini@1249 | 1865 | return toP(F.at(pos).Exec(F.at(first.pos).Erroneous(blist))); |
duke@1 | 1866 | } |
ksrini@1249 | 1867 | return first; |
ksrini@1249 | 1868 | } |
ksrini@1249 | 1869 | } |
ksrini@1249 | 1870 | |
ksrini@1249 | 1871 | @SuppressWarnings("fallthrough") |
ksrini@1249 | 1872 | List<JCStatement> blockStatement() { |
ksrini@1249 | 1873 | //todo: skip to anchor on error(?) |
ksrini@1249 | 1874 | int pos = token.pos; |
ksrini@1249 | 1875 | switch (token.kind) { |
ksrini@1249 | 1876 | case RBRACE: case CASE: case DEFAULT: case EOF: |
ksrini@1249 | 1877 | return List.nil(); |
ksrini@1249 | 1878 | case LBRACE: case IF: case FOR: case WHILE: case DO: case TRY: |
ksrini@1249 | 1879 | case SWITCH: case SYNCHRONIZED: case RETURN: case THROW: case BREAK: |
ksrini@1249 | 1880 | case CONTINUE: case SEMI: case ELSE: case FINALLY: case CATCH: |
ksrini@1249 | 1881 | return List.of(parseStatement()); |
ksrini@1249 | 1882 | case MONKEYS_AT: |
ksrini@1249 | 1883 | case FINAL: { |
jjg@1280 | 1884 | Comment dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 1885 | JCModifiers mods = modifiersOpt(); |
ksrini@1249 | 1886 | if (token.kind == INTERFACE || |
ksrini@1249 | 1887 | token.kind == CLASS || |
ksrini@1249 | 1888 | allowEnums && token.kind == ENUM) { |
ksrini@1249 | 1889 | return List.of(classOrInterfaceOrEnumDeclaration(mods, dc)); |
ksrini@1249 | 1890 | } else { |
ksrini@1249 | 1891 | JCExpression t = parseType(); |
ksrini@1249 | 1892 | ListBuffer<JCStatement> stats = |
ksrini@1249 | 1893 | variableDeclarators(mods, t, new ListBuffer<JCStatement>()); |
ksrini@1249 | 1894 | // A "LocalVariableDeclarationStatement" subsumes the terminating semicolon |
ksrini@1249 | 1895 | storeEnd(stats.elems.last(), token.endPos); |
ksrini@1249 | 1896 | accept(SEMI); |
ksrini@1249 | 1897 | return stats.toList(); |
duke@1 | 1898 | } |
ksrini@1249 | 1899 | } |
ksrini@1249 | 1900 | case ABSTRACT: case STRICTFP: { |
jjg@1280 | 1901 | Comment dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 1902 | JCModifiers mods = modifiersOpt(); |
ksrini@1249 | 1903 | return List.of(classOrInterfaceOrEnumDeclaration(mods, dc)); |
ksrini@1249 | 1904 | } |
ksrini@1249 | 1905 | case INTERFACE: |
ksrini@1249 | 1906 | case CLASS: |
jjg@1280 | 1907 | Comment dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 1908 | return List.of(classOrInterfaceOrEnumDeclaration(modifiersOpt(), dc)); |
ksrini@1249 | 1909 | case ENUM: |
ksrini@1249 | 1910 | case ASSERT: |
ksrini@1249 | 1911 | if (allowEnums && token.kind == ENUM) { |
ksrini@1249 | 1912 | error(token.pos, "local.enum"); |
ksrini@1249 | 1913 | dc = token.comment(CommentStyle.JAVADOC); |
ksrini@1249 | 1914 | return List.of(classOrInterfaceOrEnumDeclaration(modifiersOpt(), dc)); |
ksrini@1249 | 1915 | } else if (allowAsserts && token.kind == ASSERT) { |
ksrini@1249 | 1916 | return List.of(parseStatement()); |
ksrini@1249 | 1917 | } |
ksrini@1249 | 1918 | /* fall through to default */ |
ksrini@1249 | 1919 | default: |
ksrini@1249 | 1920 | Token prevToken = token; |
ksrini@1249 | 1921 | JCExpression t = term(EXPR | TYPE); |
ksrini@1249 | 1922 | if (token.kind == COLON && t.hasTag(IDENT)) { |
ksrini@1249 | 1923 | nextToken(); |
ksrini@1249 | 1924 | JCStatement stat = parseStatement(); |
ksrini@1249 | 1925 | return List.<JCStatement>of(F.at(pos).Labelled(prevToken.name(), stat)); |
ksrini@1249 | 1926 | } else if ((lastmode & TYPE) != 0 && |
ksrini@1249 | 1927 | (token.kind == IDENTIFIER || |
ksrini@1249 | 1928 | token.kind == ASSERT || |
ksrini@1249 | 1929 | token.kind == ENUM)) { |
ksrini@1249 | 1930 | pos = token.pos; |
ksrini@1249 | 1931 | JCModifiers mods = F.at(Position.NOPOS).Modifiers(0); |
ksrini@1249 | 1932 | F.at(pos); |
ksrini@1249 | 1933 | ListBuffer<JCStatement> stats = |
ksrini@1249 | 1934 | variableDeclarators(mods, t, new ListBuffer<JCStatement>()); |
ksrini@1249 | 1935 | // A "LocalVariableDeclarationStatement" subsumes the terminating semicolon |
ksrini@1249 | 1936 | storeEnd(stats.elems.last(), token.endPos); |
ksrini@1249 | 1937 | accept(SEMI); |
duke@1 | 1938 | return stats.toList(); |
ksrini@1249 | 1939 | } else { |
ksrini@1249 | 1940 | // This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon |
ksrini@1249 | 1941 | JCExpressionStatement expr = to(F.at(pos).Exec(checkExprStat(t))); |
ksrini@1249 | 1942 | accept(SEMI); |
ksrini@1249 | 1943 | return List.<JCStatement>of(expr); |
duke@1 | 1944 | } |
duke@1 | 1945 | } |
duke@1 | 1946 | } |
duke@1 | 1947 | |
duke@1 | 1948 | /** Statement = |
duke@1 | 1949 | * Block |
duke@1 | 1950 | * | IF ParExpression Statement [ELSE Statement] |
duke@1 | 1951 | * | FOR "(" ForInitOpt ";" [Expression] ";" ForUpdateOpt ")" Statement |
duke@1 | 1952 | * | FOR "(" FormalParameter : Expression ")" Statement |
duke@1 | 1953 | * | WHILE ParExpression Statement |
duke@1 | 1954 | * | DO Statement WHILE ParExpression ";" |
duke@1 | 1955 | * | TRY Block ( Catches | [Catches] FinallyPart ) |
darcy@850 | 1956 | * | TRY "(" ResourceSpecification ";"opt ")" Block [Catches] [FinallyPart] |
duke@1 | 1957 | * | SWITCH ParExpression "{" SwitchBlockStatementGroups "}" |
duke@1 | 1958 | * | SYNCHRONIZED ParExpression Block |
duke@1 | 1959 | * | RETURN [Expression] ";" |
duke@1 | 1960 | * | THROW Expression ";" |
duke@1 | 1961 | * | BREAK [Ident] ";" |
duke@1 | 1962 | * | CONTINUE [Ident] ";" |
duke@1 | 1963 | * | ASSERT Expression [ ":" Expression ] ";" |
duke@1 | 1964 | * | ";" |
duke@1 | 1965 | * | ExpressionStatement |
duke@1 | 1966 | * | Ident ":" Statement |
duke@1 | 1967 | */ |
duke@1 | 1968 | @SuppressWarnings("fallthrough") |
jjg@111 | 1969 | public JCStatement parseStatement() { |
mcimadamore@1113 | 1970 | int pos = token.pos; |
mcimadamore@1113 | 1971 | switch (token.kind) { |
duke@1 | 1972 | case LBRACE: |
duke@1 | 1973 | return block(); |
duke@1 | 1974 | case IF: { |
mcimadamore@1113 | 1975 | nextToken(); |
duke@1 | 1976 | JCExpression cond = parExpression(); |
ksrini@1249 | 1977 | JCStatement thenpart = parseStatementAsBlock(); |
duke@1 | 1978 | JCStatement elsepart = null; |
mcimadamore@1113 | 1979 | if (token.kind == ELSE) { |
mcimadamore@1113 | 1980 | nextToken(); |
ksrini@1249 | 1981 | elsepart = parseStatementAsBlock(); |
duke@1 | 1982 | } |
duke@1 | 1983 | return F.at(pos).If(cond, thenpart, elsepart); |
duke@1 | 1984 | } |
duke@1 | 1985 | case FOR: { |
mcimadamore@1113 | 1986 | nextToken(); |
duke@1 | 1987 | accept(LPAREN); |
mcimadamore@1113 | 1988 | List<JCStatement> inits = token.kind == SEMI ? List.<JCStatement>nil() : forInit(); |
duke@1 | 1989 | if (inits.length() == 1 && |
jjg@1127 | 1990 | inits.head.hasTag(VARDEF) && |
duke@1 | 1991 | ((JCVariableDecl) inits.head).init == null && |
mcimadamore@1113 | 1992 | token.kind == COLON) { |
duke@1 | 1993 | checkForeach(); |
duke@1 | 1994 | JCVariableDecl var = (JCVariableDecl)inits.head; |
duke@1 | 1995 | accept(COLON); |
jjg@111 | 1996 | JCExpression expr = parseExpression(); |
duke@1 | 1997 | accept(RPAREN); |
ksrini@1249 | 1998 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 1999 | return F.at(pos).ForeachLoop(var, expr, body); |
duke@1 | 2000 | } else { |
duke@1 | 2001 | accept(SEMI); |
mcimadamore@1113 | 2002 | JCExpression cond = token.kind == SEMI ? null : parseExpression(); |
duke@1 | 2003 | accept(SEMI); |
mcimadamore@1113 | 2004 | List<JCExpressionStatement> steps = token.kind == RPAREN ? List.<JCExpressionStatement>nil() : forUpdate(); |
duke@1 | 2005 | accept(RPAREN); |
ksrini@1249 | 2006 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 2007 | return F.at(pos).ForLoop(inits, cond, steps, body); |
duke@1 | 2008 | } |
duke@1 | 2009 | } |
duke@1 | 2010 | case WHILE: { |
mcimadamore@1113 | 2011 | nextToken(); |
duke@1 | 2012 | JCExpression cond = parExpression(); |
ksrini@1249 | 2013 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 2014 | return F.at(pos).WhileLoop(cond, body); |
duke@1 | 2015 | } |
duke@1 | 2016 | case DO: { |
mcimadamore@1113 | 2017 | nextToken(); |
ksrini@1249 | 2018 | JCStatement body = parseStatementAsBlock(); |
duke@1 | 2019 | accept(WHILE); |
duke@1 | 2020 | JCExpression cond = parExpression(); |
duke@1 | 2021 | JCDoWhileLoop t = to(F.at(pos).DoLoop(body, cond)); |
duke@1 | 2022 | accept(SEMI); |
duke@1 | 2023 | return t; |
duke@1 | 2024 | } |
duke@1 | 2025 | case TRY: { |
mcimadamore@1113 | 2026 | nextToken(); |
darcy@609 | 2027 | List<JCTree> resources = List.<JCTree>nil(); |
mcimadamore@1113 | 2028 | if (token.kind == LPAREN) { |
mcimadamore@743 | 2029 | checkTryWithResources(); |
mcimadamore@1113 | 2030 | nextToken(); |
darcy@609 | 2031 | resources = resources(); |
darcy@609 | 2032 | accept(RPAREN); |
darcy@609 | 2033 | } |
duke@1 | 2034 | JCBlock body = block(); |
duke@1 | 2035 | ListBuffer<JCCatch> catchers = new ListBuffer<JCCatch>(); |
duke@1 | 2036 | JCBlock finalizer = null; |
mcimadamore@1113 | 2037 | if (token.kind == CATCH || token.kind == FINALLY) { |
mcimadamore@1113 | 2038 | while (token.kind == CATCH) catchers.append(catchClause()); |
mcimadamore@1113 | 2039 | if (token.kind == FINALLY) { |
mcimadamore@1113 | 2040 | nextToken(); |
duke@1 | 2041 | finalizer = block(); |
duke@1 | 2042 | } |
duke@1 | 2043 | } else { |
darcy@609 | 2044 | if (allowTWR) { |
darcy@609 | 2045 | if (resources.isEmpty()) |
jjg@726 | 2046 | error(pos, "try.without.catch.finally.or.resource.decls"); |
darcy@609 | 2047 | } else |
jjg@726 | 2048 | error(pos, "try.without.catch.or.finally"); |
duke@1 | 2049 | } |
darcy@609 | 2050 | return F.at(pos).Try(resources, body, catchers.toList(), finalizer); |
duke@1 | 2051 | } |
duke@1 | 2052 | case SWITCH: { |
mcimadamore@1113 | 2053 | nextToken(); |
duke@1 | 2054 | JCExpression selector = parExpression(); |
duke@1 | 2055 | accept(LBRACE); |
duke@1 | 2056 | List<JCCase> cases = switchBlockStatementGroups(); |
duke@1 | 2057 | JCSwitch t = to(F.at(pos).Switch(selector, cases)); |
duke@1 | 2058 | accept(RBRACE); |
duke@1 | 2059 | return t; |
duke@1 | 2060 | } |
duke@1 | 2061 | case SYNCHRONIZED: { |
mcimadamore@1113 | 2062 | nextToken(); |
duke@1 | 2063 | JCExpression lock = parExpression(); |
duke@1 | 2064 | JCBlock body = block(); |
duke@1 | 2065 | return F.at(pos).Synchronized(lock, body); |
duke@1 | 2066 | } |
duke@1 | 2067 | case RETURN: { |
mcimadamore@1113 | 2068 | nextToken(); |
mcimadamore@1113 | 2069 | JCExpression result = token.kind == SEMI ? null : parseExpression(); |
duke@1 | 2070 | JCReturn t = to(F.at(pos).Return(result)); |
duke@1 | 2071 | accept(SEMI); |
duke@1 | 2072 | return t; |
duke@1 | 2073 | } |
duke@1 | 2074 | case THROW: { |
mcimadamore@1113 | 2075 | nextToken(); |
jjg@111 | 2076 | JCExpression exc = parseExpression(); |
duke@1 | 2077 | JCThrow t = to(F.at(pos).Throw(exc)); |
duke@1 | 2078 | accept(SEMI); |
duke@1 | 2079 | return t; |
duke@1 | 2080 | } |
duke@1 | 2081 | case BREAK: { |
mcimadamore@1113 | 2082 | nextToken(); |
mcimadamore@1113 | 2083 | Name label = (token.kind == IDENTIFIER || token.kind == ASSERT || token.kind == ENUM) ? ident() : null; |
duke@1 | 2084 | JCBreak t = to(F.at(pos).Break(label)); |
duke@1 | 2085 | accept(SEMI); |
duke@1 | 2086 | return t; |
duke@1 | 2087 | } |
duke@1 | 2088 | case CONTINUE: { |
mcimadamore@1113 | 2089 | nextToken(); |
mcimadamore@1113 | 2090 | Name label = (token.kind == IDENTIFIER || token.kind == ASSERT || token.kind == ENUM) ? ident() : null; |
duke@1 | 2091 | JCContinue t = to(F.at(pos).Continue(label)); |
duke@1 | 2092 | accept(SEMI); |
duke@1 | 2093 | return t; |
duke@1 | 2094 | } |
duke@1 | 2095 | case SEMI: |
mcimadamore@1113 | 2096 | nextToken(); |
duke@1 | 2097 | return toP(F.at(pos).Skip()); |
duke@1 | 2098 | case ELSE: |
duke@1 | 2099 | return toP(F.Exec(syntaxError("else.without.if"))); |
duke@1 | 2100 | case FINALLY: |
duke@1 | 2101 | return toP(F.Exec(syntaxError("finally.without.try"))); |
duke@1 | 2102 | case CATCH: |
duke@1 | 2103 | return toP(F.Exec(syntaxError("catch.without.try"))); |
duke@1 | 2104 | case ASSERT: { |
mcimadamore@1113 | 2105 | if (allowAsserts && token.kind == ASSERT) { |
mcimadamore@1113 | 2106 | nextToken(); |
jjg@111 | 2107 | JCExpression assertion = parseExpression(); |
duke@1 | 2108 | JCExpression message = null; |
mcimadamore@1113 | 2109 | if (token.kind == COLON) { |
mcimadamore@1113 | 2110 | nextToken(); |
jjg@111 | 2111 | message = parseExpression(); |
duke@1 | 2112 | } |
duke@1 | 2113 | JCAssert t = to(F.at(pos).Assert(assertion, message)); |
duke@1 | 2114 | accept(SEMI); |
duke@1 | 2115 | return t; |
duke@1 | 2116 | } |
duke@1 | 2117 | /* else fall through to default case */ |
duke@1 | 2118 | } |
duke@1 | 2119 | case ENUM: |
duke@1 | 2120 | default: |
mcimadamore@1113 | 2121 | Token prevToken = token; |
jjg@111 | 2122 | JCExpression expr = parseExpression(); |
jjg@1127 | 2123 | if (token.kind == COLON && expr.hasTag(IDENT)) { |
mcimadamore@1113 | 2124 | nextToken(); |
jjg@111 | 2125 | JCStatement stat = parseStatement(); |
mcimadamore@1113 | 2126 | return F.at(pos).Labelled(prevToken.name(), stat); |
duke@1 | 2127 | } else { |
duke@1 | 2128 | // This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon |
duke@1 | 2129 | JCExpressionStatement stat = to(F.at(pos).Exec(checkExprStat(expr))); |
duke@1 | 2130 | accept(SEMI); |
duke@1 | 2131 | return stat; |
duke@1 | 2132 | } |
duke@1 | 2133 | } |
duke@1 | 2134 | } |
duke@1 | 2135 | |
duke@1 | 2136 | /** CatchClause = CATCH "(" FormalParameter ")" Block |
duke@1 | 2137 | */ |
ksrini@1074 | 2138 | protected JCCatch catchClause() { |
mcimadamore@1113 | 2139 | int pos = token.pos; |
duke@1 | 2140 | accept(CATCH); |
duke@1 | 2141 | accept(LPAREN); |
mcimadamore@550 | 2142 | JCModifiers mods = optFinal(Flags.PARAMETER); |
mcimadamore@550 | 2143 | List<JCExpression> catchTypes = catchTypes(); |
mcimadamore@550 | 2144 | JCExpression paramType = catchTypes.size() > 1 ? |
darcy@969 | 2145 | toP(F.at(catchTypes.head.getStartPosition()).TypeUnion(catchTypes)) : |
mcimadamore@550 | 2146 | catchTypes.head; |
mcimadamore@550 | 2147 | JCVariableDecl formal = variableDeclaratorId(mods, paramType); |
duke@1 | 2148 | accept(RPAREN); |
duke@1 | 2149 | JCBlock body = block(); |
duke@1 | 2150 | return F.at(pos).Catch(formal, body); |
duke@1 | 2151 | } |
duke@1 | 2152 | |
mcimadamore@550 | 2153 | List<JCExpression> catchTypes() { |
mcimadamore@550 | 2154 | ListBuffer<JCExpression> catchTypes = ListBuffer.lb(); |
mcimadamore@550 | 2155 | catchTypes.add(parseType()); |
mcimadamore@1113 | 2156 | while (token.kind == BAR) { |
mcimadamore@550 | 2157 | checkMulticatch(); |
mcimadamore@1113 | 2158 | nextToken(); |
mcimadamore@550 | 2159 | catchTypes.add(qualident()); |
mcimadamore@550 | 2160 | } |
mcimadamore@550 | 2161 | return catchTypes.toList(); |
mcimadamore@550 | 2162 | } |
mcimadamore@550 | 2163 | |
duke@1 | 2164 | /** SwitchBlockStatementGroups = { SwitchBlockStatementGroup } |
duke@1 | 2165 | * SwitchBlockStatementGroup = SwitchLabel BlockStatements |
duke@1 | 2166 | * SwitchLabel = CASE ConstantExpression ":" | DEFAULT ":" |
duke@1 | 2167 | */ |
duke@1 | 2168 | List<JCCase> switchBlockStatementGroups() { |
duke@1 | 2169 | ListBuffer<JCCase> cases = new ListBuffer<JCCase>(); |
duke@1 | 2170 | while (true) { |
mcimadamore@1113 | 2171 | int pos = token.pos; |
mcimadamore@1113 | 2172 | switch (token.kind) { |
ksrini@1346 | 2173 | case CASE: |
ksrini@1346 | 2174 | case DEFAULT: |
ksrini@1346 | 2175 | cases.append(switchBlockStatementGroup()); |
duke@1 | 2176 | break; |
duke@1 | 2177 | case RBRACE: case EOF: |
duke@1 | 2178 | return cases.toList(); |
duke@1 | 2179 | default: |
mcimadamore@1113 | 2180 | nextToken(); // to ensure progress |
duke@1 | 2181 | syntaxError(pos, "expected3", |
mcimadamore@80 | 2182 | CASE, DEFAULT, RBRACE); |
duke@1 | 2183 | } |
duke@1 | 2184 | } |
duke@1 | 2185 | } |
duke@1 | 2186 | |
ksrini@1346 | 2187 | protected JCCase switchBlockStatementGroup() { |
ksrini@1346 | 2188 | int pos = token.pos; |
ksrini@1346 | 2189 | List<JCStatement> stats; |
ksrini@1346 | 2190 | JCCase c; |
ksrini@1346 | 2191 | switch (token.kind) { |
ksrini@1346 | 2192 | case CASE: |
ksrini@1346 | 2193 | nextToken(); |
ksrini@1346 | 2194 | JCExpression pat = parseExpression(); |
ksrini@1346 | 2195 | accept(COLON); |
ksrini@1346 | 2196 | stats = blockStatements(); |
ksrini@1346 | 2197 | c = F.at(pos).Case(pat, stats); |
ksrini@1346 | 2198 | if (stats.isEmpty()) |
ksrini@1346 | 2199 | storeEnd(c, S.prevToken().endPos); |
ksrini@1346 | 2200 | return c; |
ksrini@1346 | 2201 | case DEFAULT: |
ksrini@1346 | 2202 | nextToken(); |
ksrini@1346 | 2203 | accept(COLON); |
ksrini@1346 | 2204 | stats = blockStatements(); |
ksrini@1346 | 2205 | c = F.at(pos).Case(null, stats); |
ksrini@1346 | 2206 | if (stats.isEmpty()) |
ksrini@1346 | 2207 | storeEnd(c, S.prevToken().endPos); |
ksrini@1346 | 2208 | return c; |
ksrini@1346 | 2209 | } |
ksrini@1346 | 2210 | throw new AssertionError("should not reach here"); |
ksrini@1346 | 2211 | } |
ksrini@1346 | 2212 | |
duke@1 | 2213 | /** MoreStatementExpressions = { COMMA StatementExpression } |
duke@1 | 2214 | */ |
duke@1 | 2215 | <T extends ListBuffer<? super JCExpressionStatement>> T moreStatementExpressions(int pos, |
duke@1 | 2216 | JCExpression first, |
duke@1 | 2217 | T stats) { |
duke@1 | 2218 | // This Exec is a "StatementExpression"; it subsumes no terminating token |
duke@1 | 2219 | stats.append(toP(F.at(pos).Exec(checkExprStat(first)))); |
mcimadamore@1113 | 2220 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2221 | nextToken(); |
mcimadamore@1113 | 2222 | pos = token.pos; |
jjg@111 | 2223 | JCExpression t = parseExpression(); |
duke@1 | 2224 | // This Exec is a "StatementExpression"; it subsumes no terminating token |
duke@1 | 2225 | stats.append(toP(F.at(pos).Exec(checkExprStat(t)))); |
duke@1 | 2226 | } |
duke@1 | 2227 | return stats; |
duke@1 | 2228 | } |
duke@1 | 2229 | |
duke@1 | 2230 | /** ForInit = StatementExpression MoreStatementExpressions |
duke@1 | 2231 | * | { FINAL | '@' Annotation } Type VariableDeclarators |
duke@1 | 2232 | */ |
duke@1 | 2233 | List<JCStatement> forInit() { |
duke@1 | 2234 | ListBuffer<JCStatement> stats = lb(); |
mcimadamore@1113 | 2235 | int pos = token.pos; |
mcimadamore@1113 | 2236 | if (token.kind == FINAL || token.kind == MONKEYS_AT) { |
jjg@111 | 2237 | return variableDeclarators(optFinal(0), parseType(), stats).toList(); |
duke@1 | 2238 | } else { |
duke@1 | 2239 | JCExpression t = term(EXPR | TYPE); |
duke@1 | 2240 | if ((lastmode & TYPE) != 0 && |
ksrini@1259 | 2241 | (token.kind == IDENTIFIER || token.kind == ASSERT || |
ksrini@1259 | 2242 | token.kind == ENUM)) { |
duke@1 | 2243 | return variableDeclarators(modifiersOpt(), t, stats).toList(); |
ksrini@1259 | 2244 | } else if ((lastmode & TYPE) != 0 && token.kind == COLON) { |
ksrini@1259 | 2245 | error(pos, "bad.initializer", "for-loop"); |
ksrini@1259 | 2246 | return List.of((JCStatement)F.at(pos).VarDef(null, null, t, null)); |
ksrini@1259 | 2247 | } else { |
duke@1 | 2248 | return moreStatementExpressions(pos, t, stats).toList(); |
ksrini@1259 | 2249 | } |
duke@1 | 2250 | } |
duke@1 | 2251 | } |
duke@1 | 2252 | |
duke@1 | 2253 | /** ForUpdate = StatementExpression MoreStatementExpressions |
duke@1 | 2254 | */ |
duke@1 | 2255 | List<JCExpressionStatement> forUpdate() { |
mcimadamore@1113 | 2256 | return moreStatementExpressions(token.pos, |
jjg@111 | 2257 | parseExpression(), |
duke@1 | 2258 | new ListBuffer<JCExpressionStatement>()).toList(); |
duke@1 | 2259 | } |
duke@1 | 2260 | |
duke@1 | 2261 | /** AnnotationsOpt = { '@' Annotation } |
duke@1 | 2262 | */ |
jjg@722 | 2263 | List<JCAnnotation> annotationsOpt() { |
mcimadamore@1113 | 2264 | if (token.kind != MONKEYS_AT) return List.nil(); // optimization |
duke@1 | 2265 | ListBuffer<JCAnnotation> buf = new ListBuffer<JCAnnotation>(); |
mcimadamore@1113 | 2266 | while (token.kind == MONKEYS_AT) { |
mcimadamore@1113 | 2267 | int pos = token.pos; |
mcimadamore@1113 | 2268 | nextToken(); |
jjg@722 | 2269 | buf.append(annotation(pos)); |
duke@1 | 2270 | } |
jjg@722 | 2271 | return buf.toList(); |
duke@1 | 2272 | } |
duke@1 | 2273 | |
duke@1 | 2274 | /** ModifiersOpt = { Modifier } |
duke@1 | 2275 | * Modifier = PUBLIC | PROTECTED | PRIVATE | STATIC | ABSTRACT | FINAL |
duke@1 | 2276 | * | NATIVE | SYNCHRONIZED | TRANSIENT | VOLATILE | "@" |
duke@1 | 2277 | * | "@" Annotation |
duke@1 | 2278 | */ |
duke@1 | 2279 | JCModifiers modifiersOpt() { |
duke@1 | 2280 | return modifiersOpt(null); |
duke@1 | 2281 | } |
ksrini@1074 | 2282 | protected JCModifiers modifiersOpt(JCModifiers partial) { |
jjg@482 | 2283 | long flags; |
jjg@482 | 2284 | ListBuffer<JCAnnotation> annotations = new ListBuffer<JCAnnotation>(); |
jjg@482 | 2285 | int pos; |
jjg@482 | 2286 | if (partial == null) { |
jjg@482 | 2287 | flags = 0; |
mcimadamore@1113 | 2288 | pos = token.pos; |
jjg@482 | 2289 | } else { |
jjg@482 | 2290 | flags = partial.flags; |
jjg@482 | 2291 | annotations.appendList(partial.annotations); |
jjg@482 | 2292 | pos = partial.pos; |
jjg@482 | 2293 | } |
mcimadamore@1125 | 2294 | if (token.deprecatedFlag()) { |
duke@1 | 2295 | flags |= Flags.DEPRECATED; |
duke@1 | 2296 | } |
duke@1 | 2297 | int lastPos = Position.NOPOS; |
duke@1 | 2298 | loop: |
duke@1 | 2299 | while (true) { |
duke@1 | 2300 | long flag; |
mcimadamore@1113 | 2301 | switch (token.kind) { |
duke@1 | 2302 | case PRIVATE : flag = Flags.PRIVATE; break; |
duke@1 | 2303 | case PROTECTED : flag = Flags.PROTECTED; break; |
duke@1 | 2304 | case PUBLIC : flag = Flags.PUBLIC; break; |
duke@1 | 2305 | case STATIC : flag = Flags.STATIC; break; |
duke@1 | 2306 | case TRANSIENT : flag = Flags.TRANSIENT; break; |
duke@1 | 2307 | case FINAL : flag = Flags.FINAL; break; |
duke@1 | 2308 | case ABSTRACT : flag = Flags.ABSTRACT; break; |
duke@1 | 2309 | case NATIVE : flag = Flags.NATIVE; break; |
duke@1 | 2310 | case VOLATILE : flag = Flags.VOLATILE; break; |
duke@1 | 2311 | case SYNCHRONIZED: flag = Flags.SYNCHRONIZED; break; |
duke@1 | 2312 | case STRICTFP : flag = Flags.STRICTFP; break; |
duke@1 | 2313 | case MONKEYS_AT : flag = Flags.ANNOTATION; break; |
mcimadamore@1113 | 2314 | case ERROR : flag = 0; nextToken(); break; |
duke@1 | 2315 | default: break loop; |
duke@1 | 2316 | } |
mcimadamore@1113 | 2317 | if ((flags & flag) != 0) error(token.pos, "repeated.modifier"); |
mcimadamore@1113 | 2318 | lastPos = token.pos; |
mcimadamore@1113 | 2319 | nextToken(); |
duke@1 | 2320 | if (flag == Flags.ANNOTATION) { |
duke@1 | 2321 | checkAnnotations(); |
mcimadamore@1113 | 2322 | if (token.kind != INTERFACE) { |
jjg@722 | 2323 | JCAnnotation ann = annotation(lastPos); |
jjg@482 | 2324 | // if first modifier is an annotation, set pos to annotation's. |
jjg@482 | 2325 | if (flags == 0 && annotations.isEmpty()) |
jjg@482 | 2326 | pos = ann.pos; |
jjg@482 | 2327 | annotations.append(ann); |
jjg@482 | 2328 | lastPos = ann.pos; |
duke@1 | 2329 | flag = 0; |
duke@1 | 2330 | } |
duke@1 | 2331 | } |
duke@1 | 2332 | flags |= flag; |
duke@1 | 2333 | } |
mcimadamore@1113 | 2334 | switch (token.kind) { |
duke@1 | 2335 | case ENUM: flags |= Flags.ENUM; break; |
duke@1 | 2336 | case INTERFACE: flags |= Flags.INTERFACE; break; |
duke@1 | 2337 | default: break; |
duke@1 | 2338 | } |
duke@1 | 2339 | |
duke@1 | 2340 | /* A modifiers tree with no modifier tokens or annotations |
duke@1 | 2341 | * has no text position. */ |
jjg@613 | 2342 | if ((flags & (Flags.ModifierFlags | Flags.ANNOTATION)) == 0 && annotations.isEmpty()) |
duke@1 | 2343 | pos = Position.NOPOS; |
duke@1 | 2344 | |
duke@1 | 2345 | JCModifiers mods = F.at(pos).Modifiers(flags, annotations.toList()); |
duke@1 | 2346 | if (pos != Position.NOPOS) |
mcimadamore@1113 | 2347 | storeEnd(mods, S.prevToken().endPos); |
duke@1 | 2348 | return mods; |
duke@1 | 2349 | } |
duke@1 | 2350 | |
duke@1 | 2351 | /** Annotation = "@" Qualident [ "(" AnnotationFieldValues ")" ] |
duke@1 | 2352 | * @param pos position of "@" token |
duke@1 | 2353 | */ |
jjg@722 | 2354 | JCAnnotation annotation(int pos) { |
duke@1 | 2355 | // accept(AT); // AT consumed by caller |
duke@1 | 2356 | checkAnnotations(); |
duke@1 | 2357 | JCTree ident = qualident(); |
duke@1 | 2358 | List<JCExpression> fieldValues = annotationFieldValuesOpt(); |
jjg@722 | 2359 | JCAnnotation ann = F.at(pos).Annotation(ident, fieldValues); |
mcimadamore@1113 | 2360 | storeEnd(ann, S.prevToken().endPos); |
duke@1 | 2361 | return ann; |
duke@1 | 2362 | } |
duke@1 | 2363 | |
duke@1 | 2364 | List<JCExpression> annotationFieldValuesOpt() { |
mcimadamore@1113 | 2365 | return (token.kind == LPAREN) ? annotationFieldValues() : List.<JCExpression>nil(); |
duke@1 | 2366 | } |
duke@1 | 2367 | |
duke@1 | 2368 | /** AnnotationFieldValues = "(" [ AnnotationFieldValue { "," AnnotationFieldValue } ] ")" */ |
duke@1 | 2369 | List<JCExpression> annotationFieldValues() { |
duke@1 | 2370 | accept(LPAREN); |
duke@1 | 2371 | ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 2372 | if (token.kind != RPAREN) { |
duke@1 | 2373 | buf.append(annotationFieldValue()); |
mcimadamore@1113 | 2374 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2375 | nextToken(); |
duke@1 | 2376 | buf.append(annotationFieldValue()); |
duke@1 | 2377 | } |
duke@1 | 2378 | } |
duke@1 | 2379 | accept(RPAREN); |
duke@1 | 2380 | return buf.toList(); |
duke@1 | 2381 | } |
duke@1 | 2382 | |
duke@1 | 2383 | /** AnnotationFieldValue = AnnotationValue |
duke@1 | 2384 | * | Identifier "=" AnnotationValue |
duke@1 | 2385 | */ |
duke@1 | 2386 | JCExpression annotationFieldValue() { |
mcimadamore@1113 | 2387 | if (token.kind == IDENTIFIER) { |
duke@1 | 2388 | mode = EXPR; |
duke@1 | 2389 | JCExpression t1 = term1(); |
jjg@1127 | 2390 | if (t1.hasTag(IDENT) && token.kind == EQ) { |
mcimadamore@1113 | 2391 | int pos = token.pos; |
duke@1 | 2392 | accept(EQ); |
jjg@482 | 2393 | JCExpression v = annotationValue(); |
jjg@482 | 2394 | return toP(F.at(pos).Assign(t1, v)); |
duke@1 | 2395 | } else { |
duke@1 | 2396 | return t1; |
duke@1 | 2397 | } |
duke@1 | 2398 | } |
duke@1 | 2399 | return annotationValue(); |
duke@1 | 2400 | } |
duke@1 | 2401 | |
duke@1 | 2402 | /* AnnotationValue = ConditionalExpression |
duke@1 | 2403 | * | Annotation |
darcy@417 | 2404 | * | "{" [ AnnotationValue { "," AnnotationValue } ] [","] "}" |
duke@1 | 2405 | */ |
duke@1 | 2406 | JCExpression annotationValue() { |
duke@1 | 2407 | int pos; |
mcimadamore@1113 | 2408 | switch (token.kind) { |
duke@1 | 2409 | case MONKEYS_AT: |
mcimadamore@1113 | 2410 | pos = token.pos; |
mcimadamore@1113 | 2411 | nextToken(); |
jjg@722 | 2412 | return annotation(pos); |
duke@1 | 2413 | case LBRACE: |
mcimadamore@1113 | 2414 | pos = token.pos; |
duke@1 | 2415 | accept(LBRACE); |
duke@1 | 2416 | ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 2417 | if (token.kind != RBRACE) { |
duke@1 | 2418 | buf.append(annotationValue()); |
mcimadamore@1113 | 2419 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2420 | nextToken(); |
mcimadamore@1113 | 2421 | if (token.kind == RBRACE) break; |
duke@1 | 2422 | buf.append(annotationValue()); |
duke@1 | 2423 | } |
duke@1 | 2424 | } |
duke@1 | 2425 | accept(RBRACE); |
duke@1 | 2426 | return toP(F.at(pos).NewArray(null, List.<JCExpression>nil(), buf.toList())); |
duke@1 | 2427 | default: |
duke@1 | 2428 | mode = EXPR; |
duke@1 | 2429 | return term1(); |
duke@1 | 2430 | } |
duke@1 | 2431 | } |
duke@1 | 2432 | |
duke@1 | 2433 | /** VariableDeclarators = VariableDeclarator { "," VariableDeclarator } |
duke@1 | 2434 | */ |
duke@1 | 2435 | public <T extends ListBuffer<? super JCVariableDecl>> T variableDeclarators(JCModifiers mods, |
duke@1 | 2436 | JCExpression type, |
duke@1 | 2437 | T vdefs) |
duke@1 | 2438 | { |
mcimadamore@1113 | 2439 | return variableDeclaratorsRest(token.pos, mods, type, ident(), false, null, vdefs); |
duke@1 | 2440 | } |
duke@1 | 2441 | |
duke@1 | 2442 | /** VariableDeclaratorsRest = VariableDeclaratorRest { "," VariableDeclarator } |
duke@1 | 2443 | * ConstantDeclaratorsRest = ConstantDeclaratorRest { "," ConstantDeclarator } |
duke@1 | 2444 | * |
duke@1 | 2445 | * @param reqInit Is an initializer always required? |
duke@1 | 2446 | * @param dc The documentation comment for the variable declarations, or null. |
duke@1 | 2447 | */ |
duke@1 | 2448 | <T extends ListBuffer<? super JCVariableDecl>> T variableDeclaratorsRest(int pos, |
duke@1 | 2449 | JCModifiers mods, |
duke@1 | 2450 | JCExpression type, |
duke@1 | 2451 | Name name, |
duke@1 | 2452 | boolean reqInit, |
jjg@1280 | 2453 | Comment dc, |
duke@1 | 2454 | T vdefs) |
duke@1 | 2455 | { |
duke@1 | 2456 | vdefs.append(variableDeclaratorRest(pos, mods, type, name, reqInit, dc)); |
mcimadamore@1113 | 2457 | while (token.kind == COMMA) { |
duke@1 | 2458 | // All but last of multiple declarators subsume a comma |
mcimadamore@1113 | 2459 | storeEnd((JCTree)vdefs.elems.last(), token.endPos); |
mcimadamore@1113 | 2460 | nextToken(); |
duke@1 | 2461 | vdefs.append(variableDeclarator(mods, type, reqInit, dc)); |
duke@1 | 2462 | } |
duke@1 | 2463 | return vdefs; |
duke@1 | 2464 | } |
duke@1 | 2465 | |
duke@1 | 2466 | /** VariableDeclarator = Ident VariableDeclaratorRest |
duke@1 | 2467 | * ConstantDeclarator = Ident ConstantDeclaratorRest |
duke@1 | 2468 | */ |
jjg@1280 | 2469 | JCVariableDecl variableDeclarator(JCModifiers mods, JCExpression type, boolean reqInit, Comment dc) { |
mcimadamore@1113 | 2470 | return variableDeclaratorRest(token.pos, mods, type, ident(), reqInit, dc); |
duke@1 | 2471 | } |
duke@1 | 2472 | |
duke@1 | 2473 | /** VariableDeclaratorRest = BracketsOpt ["=" VariableInitializer] |
duke@1 | 2474 | * ConstantDeclaratorRest = BracketsOpt "=" VariableInitializer |
duke@1 | 2475 | * |
duke@1 | 2476 | * @param reqInit Is an initializer always required? |
duke@1 | 2477 | * @param dc The documentation comment for the variable declarations, or null. |
duke@1 | 2478 | */ |
duke@1 | 2479 | JCVariableDecl variableDeclaratorRest(int pos, JCModifiers mods, JCExpression type, Name name, |
jjg@1280 | 2480 | boolean reqInit, Comment dc) { |
duke@1 | 2481 | type = bracketsOpt(type); |
duke@1 | 2482 | JCExpression init = null; |
mcimadamore@1113 | 2483 | if (token.kind == EQ) { |
mcimadamore@1113 | 2484 | nextToken(); |
duke@1 | 2485 | init = variableInitializer(); |
duke@1 | 2486 | } |
mcimadamore@1113 | 2487 | else if (reqInit) syntaxError(token.pos, "expected", EQ); |
duke@1 | 2488 | JCVariableDecl result = |
duke@1 | 2489 | toP(F.at(pos).VarDef(mods, name, type, init)); |
duke@1 | 2490 | attach(result, dc); |
duke@1 | 2491 | return result; |
duke@1 | 2492 | } |
duke@1 | 2493 | |
duke@1 | 2494 | /** VariableDeclaratorId = Ident BracketsOpt |
duke@1 | 2495 | */ |
duke@1 | 2496 | JCVariableDecl variableDeclaratorId(JCModifiers mods, JCExpression type) { |
mcimadamore@1113 | 2497 | int pos = token.pos; |
duke@1 | 2498 | Name name = ident(); |
mcimadamore@831 | 2499 | if ((mods.flags & Flags.VARARGS) != 0 && |
mcimadamore@1113 | 2500 | token.kind == LBRACKET) { |
mcimadamore@1113 | 2501 | log.error(token.pos, "varargs.and.old.array.syntax"); |
mcimadamore@831 | 2502 | } |
mcimadamore@831 | 2503 | type = bracketsOpt(type); |
duke@1 | 2504 | return toP(F.at(pos).VarDef(mods, name, type, null)); |
duke@1 | 2505 | } |
duke@1 | 2506 | |
darcy@609 | 2507 | /** Resources = Resource { ";" Resources } |
darcy@609 | 2508 | */ |
darcy@609 | 2509 | List<JCTree> resources() { |
darcy@609 | 2510 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
darcy@609 | 2511 | defs.append(resource()); |
mcimadamore@1113 | 2512 | while (token.kind == SEMI) { |
darcy@850 | 2513 | // All but last of multiple declarators must subsume a semicolon |
mcimadamore@1113 | 2514 | storeEnd(defs.elems.last(), token.endPos); |
mcimadamore@1113 | 2515 | int semiColonPos = token.pos; |
mcimadamore@1113 | 2516 | nextToken(); |
mcimadamore@1113 | 2517 | if (token.kind == RPAREN) { // Optional trailing semicolon |
darcy@840 | 2518 | // after last resource |
darcy@840 | 2519 | break; |
darcy@840 | 2520 | } |
darcy@609 | 2521 | defs.append(resource()); |
darcy@609 | 2522 | } |
darcy@609 | 2523 | return defs.toList(); |
darcy@609 | 2524 | } |
darcy@609 | 2525 | |
darcy@840 | 2526 | /** Resource = VariableModifiersOpt Type VariableDeclaratorId = Expression |
darcy@609 | 2527 | */ |
ksrini@1074 | 2528 | protected JCTree resource() { |
ksrini@1074 | 2529 | JCModifiers optFinal = optFinal(Flags.FINAL); |
ksrini@1074 | 2530 | JCExpression type = parseType(); |
mcimadamore@1113 | 2531 | int pos = token.pos; |
ksrini@1074 | 2532 | Name ident = ident(); |
ksrini@1074 | 2533 | return variableDeclaratorRest(pos, optFinal, type, ident, true, null); |
darcy@609 | 2534 | } |
darcy@609 | 2535 | |
duke@1 | 2536 | /** CompilationUnit = [ { "@" Annotation } PACKAGE Qualident ";"] {ImportDeclaration} {TypeDeclaration} |
duke@1 | 2537 | */ |
jjg@111 | 2538 | public JCTree.JCCompilationUnit parseCompilationUnit() { |
mcimadamore@1113 | 2539 | Token firstToken = token; |
duke@1 | 2540 | JCExpression pid = null; |
duke@1 | 2541 | JCModifiers mods = null; |
mcimadamore@1113 | 2542 | boolean consumedToplevelDoc = false; |
mcimadamore@1113 | 2543 | boolean seenImport = false; |
mcimadamore@1113 | 2544 | boolean seenPackage = false; |
duke@1 | 2545 | List<JCAnnotation> packageAnnotations = List.nil(); |
mcimadamore@1113 | 2546 | if (token.kind == MONKEYS_AT) |
duke@1 | 2547 | mods = modifiersOpt(); |
duke@1 | 2548 | |
mcimadamore@1113 | 2549 | if (token.kind == PACKAGE) { |
mcimadamore@1113 | 2550 | seenPackage = true; |
duke@1 | 2551 | if (mods != null) { |
duke@1 | 2552 | checkNoMods(mods.flags); |
duke@1 | 2553 | packageAnnotations = mods.annotations; |
duke@1 | 2554 | mods = null; |
duke@1 | 2555 | } |
mcimadamore@1113 | 2556 | nextToken(); |
duke@1 | 2557 | pid = qualident(); |
duke@1 | 2558 | accept(SEMI); |
duke@1 | 2559 | } |
duke@1 | 2560 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
jjg@111 | 2561 | boolean checkForImports = true; |
mcimadamore@1113 | 2562 | boolean firstTypeDecl = true; |
mcimadamore@1113 | 2563 | while (token.kind != EOF) { |
ksrini@1138 | 2564 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2565 | // error recovery |
duke@1 | 2566 | skip(checkForImports, false, false, false); |
mcimadamore@1113 | 2567 | if (token.kind == EOF) |
duke@1 | 2568 | break; |
duke@1 | 2569 | } |
mcimadamore@1113 | 2570 | if (checkForImports && mods == null && token.kind == IMPORT) { |
mcimadamore@1113 | 2571 | seenImport = true; |
duke@1 | 2572 | defs.append(importDeclaration()); |
duke@1 | 2573 | } else { |
jjg@1280 | 2574 | Comment docComment = token.comment(CommentStyle.JAVADOC); |
mcimadamore@1113 | 2575 | if (firstTypeDecl && !seenImport && !seenPackage) { |
mcimadamore@1125 | 2576 | docComment = firstToken.comment(CommentStyle.JAVADOC); |
mcimadamore@1113 | 2577 | consumedToplevelDoc = true; |
jjg@695 | 2578 | } |
mcimadamore@1113 | 2579 | JCTree def = typeDeclaration(mods, docComment); |
duke@1 | 2580 | if (def instanceof JCExpressionStatement) |
duke@1 | 2581 | def = ((JCExpressionStatement)def).expr; |
duke@1 | 2582 | defs.append(def); |
duke@1 | 2583 | if (def instanceof JCClassDecl) |
duke@1 | 2584 | checkForImports = false; |
duke@1 | 2585 | mods = null; |
mcimadamore@1113 | 2586 | firstTypeDecl = false; |
duke@1 | 2587 | } |
duke@1 | 2588 | } |
mcimadamore@1113 | 2589 | JCTree.JCCompilationUnit toplevel = F.at(firstToken.pos).TopLevel(packageAnnotations, pid, defs.toList()); |
mcimadamore@1113 | 2590 | if (!consumedToplevelDoc) |
mcimadamore@1125 | 2591 | attach(toplevel, firstToken.comment(CommentStyle.JAVADOC)); |
duke@1 | 2592 | if (defs.elems.isEmpty()) |
mcimadamore@1113 | 2593 | storeEnd(toplevel, S.prevToken().endPos); |
jjg@111 | 2594 | if (keepDocComments) |
jjg@111 | 2595 | toplevel.docComments = docComments; |
jjg@111 | 2596 | if (keepLineMap) |
jjg@111 | 2597 | toplevel.lineMap = S.getLineMap(); |
ksrini@1138 | 2598 | toplevel.endPositions = this.endPosTable; |
duke@1 | 2599 | return toplevel; |
duke@1 | 2600 | } |
duke@1 | 2601 | |
duke@1 | 2602 | /** ImportDeclaration = IMPORT [ STATIC ] Ident { "." Ident } [ "." "*" ] ";" |
duke@1 | 2603 | */ |
duke@1 | 2604 | JCTree importDeclaration() { |
mcimadamore@1113 | 2605 | int pos = token.pos; |
mcimadamore@1113 | 2606 | nextToken(); |
duke@1 | 2607 | boolean importStatic = false; |
mcimadamore@1113 | 2608 | if (token.kind == STATIC) { |
duke@1 | 2609 | checkStaticImports(); |
duke@1 | 2610 | importStatic = true; |
mcimadamore@1113 | 2611 | nextToken(); |
duke@1 | 2612 | } |
mcimadamore@1113 | 2613 | JCExpression pid = toP(F.at(token.pos).Ident(ident())); |
duke@1 | 2614 | do { |
mcimadamore@1113 | 2615 | int pos1 = token.pos; |
duke@1 | 2616 | accept(DOT); |
mcimadamore@1113 | 2617 | if (token.kind == STAR) { |
duke@1 | 2618 | pid = to(F.at(pos1).Select(pid, names.asterisk)); |
mcimadamore@1113 | 2619 | nextToken(); |
duke@1 | 2620 | break; |
duke@1 | 2621 | } else { |
duke@1 | 2622 | pid = toP(F.at(pos1).Select(pid, ident())); |
duke@1 | 2623 | } |
mcimadamore@1113 | 2624 | } while (token.kind == DOT); |
duke@1 | 2625 | accept(SEMI); |
duke@1 | 2626 | return toP(F.at(pos).Import(pid, importStatic)); |
duke@1 | 2627 | } |
duke@1 | 2628 | |
duke@1 | 2629 | /** TypeDeclaration = ClassOrInterfaceOrEnumDeclaration |
duke@1 | 2630 | * | ";" |
duke@1 | 2631 | */ |
jjg@1280 | 2632 | JCTree typeDeclaration(JCModifiers mods, Comment docComment) { |
mcimadamore@1113 | 2633 | int pos = token.pos; |
mcimadamore@1113 | 2634 | if (mods == null && token.kind == SEMI) { |
mcimadamore@1113 | 2635 | nextToken(); |
duke@1 | 2636 | return toP(F.at(pos).Skip()); |
duke@1 | 2637 | } else { |
mcimadamore@1113 | 2638 | return classOrInterfaceOrEnumDeclaration(modifiersOpt(mods), docComment); |
duke@1 | 2639 | } |
duke@1 | 2640 | } |
duke@1 | 2641 | |
duke@1 | 2642 | /** ClassOrInterfaceOrEnumDeclaration = ModifiersOpt |
duke@1 | 2643 | * (ClassDeclaration | InterfaceDeclaration | EnumDeclaration) |
duke@1 | 2644 | * @param mods Any modifiers starting the class or interface declaration |
duke@1 | 2645 | * @param dc The documentation comment for the class, or null. |
duke@1 | 2646 | */ |
jjg@1280 | 2647 | JCStatement classOrInterfaceOrEnumDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2648 | if (token.kind == CLASS) { |
duke@1 | 2649 | return classDeclaration(mods, dc); |
mcimadamore@1113 | 2650 | } else if (token.kind == INTERFACE) { |
duke@1 | 2651 | return interfaceDeclaration(mods, dc); |
duke@1 | 2652 | } else if (allowEnums) { |
mcimadamore@1113 | 2653 | if (token.kind == ENUM) { |
duke@1 | 2654 | return enumDeclaration(mods, dc); |
duke@1 | 2655 | } else { |
mcimadamore@1113 | 2656 | int pos = token.pos; |
duke@1 | 2657 | List<JCTree> errs; |
mcimadamore@1113 | 2658 | if (token.kind == IDENTIFIER) { |
duke@1 | 2659 | errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident()))); |
mcimadamore@1113 | 2660 | setErrorEndPos(token.pos); |
duke@1 | 2661 | } else { |
duke@1 | 2662 | errs = List.<JCTree>of(mods); |
duke@1 | 2663 | } |
duke@1 | 2664 | return toP(F.Exec(syntaxError(pos, errs, "expected3", |
mcimadamore@80 | 2665 | CLASS, INTERFACE, ENUM))); |
duke@1 | 2666 | } |
duke@1 | 2667 | } else { |
mcimadamore@1113 | 2668 | if (token.kind == ENUM) { |
mcimadamore@1113 | 2669 | error(token.pos, "enums.not.supported.in.source", source.name); |
duke@1 | 2670 | allowEnums = true; |
duke@1 | 2671 | return enumDeclaration(mods, dc); |
duke@1 | 2672 | } |
mcimadamore@1113 | 2673 | int pos = token.pos; |
duke@1 | 2674 | List<JCTree> errs; |
mcimadamore@1113 | 2675 | if (token.kind == IDENTIFIER) { |
duke@1 | 2676 | errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident()))); |
mcimadamore@1113 | 2677 | setErrorEndPos(token.pos); |
duke@1 | 2678 | } else { |
duke@1 | 2679 | errs = List.<JCTree>of(mods); |
duke@1 | 2680 | } |
duke@1 | 2681 | return toP(F.Exec(syntaxError(pos, errs, "expected2", |
mcimadamore@80 | 2682 | CLASS, INTERFACE))); |
duke@1 | 2683 | } |
duke@1 | 2684 | } |
duke@1 | 2685 | |
duke@1 | 2686 | /** ClassDeclaration = CLASS Ident TypeParametersOpt [EXTENDS Type] |
duke@1 | 2687 | * [IMPLEMENTS TypeList] ClassBody |
duke@1 | 2688 | * @param mods The modifiers starting the class declaration |
duke@1 | 2689 | * @param dc The documentation comment for the class, or null. |
duke@1 | 2690 | */ |
jjg@1280 | 2691 | protected JCClassDecl classDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2692 | int pos = token.pos; |
duke@1 | 2693 | accept(CLASS); |
duke@1 | 2694 | Name name = ident(); |
duke@1 | 2695 | |
duke@1 | 2696 | List<JCTypeParameter> typarams = typeParametersOpt(); |
duke@1 | 2697 | |
jjg@904 | 2698 | JCExpression extending = null; |
mcimadamore@1113 | 2699 | if (token.kind == EXTENDS) { |
mcimadamore@1113 | 2700 | nextToken(); |
jjg@111 | 2701 | extending = parseType(); |
duke@1 | 2702 | } |
duke@1 | 2703 | List<JCExpression> implementing = List.nil(); |
mcimadamore@1113 | 2704 | if (token.kind == IMPLEMENTS) { |
mcimadamore@1113 | 2705 | nextToken(); |
duke@1 | 2706 | implementing = typeList(); |
duke@1 | 2707 | } |
duke@1 | 2708 | List<JCTree> defs = classOrInterfaceBody(name, false); |
duke@1 | 2709 | JCClassDecl result = toP(F.at(pos).ClassDef( |
duke@1 | 2710 | mods, name, typarams, extending, implementing, defs)); |
duke@1 | 2711 | attach(result, dc); |
duke@1 | 2712 | return result; |
duke@1 | 2713 | } |
duke@1 | 2714 | |
duke@1 | 2715 | /** InterfaceDeclaration = INTERFACE Ident TypeParametersOpt |
duke@1 | 2716 | * [EXTENDS TypeList] InterfaceBody |
duke@1 | 2717 | * @param mods The modifiers starting the interface declaration |
duke@1 | 2718 | * @param dc The documentation comment for the interface, or null. |
duke@1 | 2719 | */ |
jjg@1280 | 2720 | protected JCClassDecl interfaceDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2721 | int pos = token.pos; |
duke@1 | 2722 | accept(INTERFACE); |
duke@1 | 2723 | Name name = ident(); |
duke@1 | 2724 | |
duke@1 | 2725 | List<JCTypeParameter> typarams = typeParametersOpt(); |
duke@1 | 2726 | |
duke@1 | 2727 | List<JCExpression> extending = List.nil(); |
mcimadamore@1113 | 2728 | if (token.kind == EXTENDS) { |
mcimadamore@1113 | 2729 | nextToken(); |
duke@1 | 2730 | extending = typeList(); |
duke@1 | 2731 | } |
duke@1 | 2732 | List<JCTree> defs = classOrInterfaceBody(name, true); |
duke@1 | 2733 | JCClassDecl result = toP(F.at(pos).ClassDef( |
duke@1 | 2734 | mods, name, typarams, null, extending, defs)); |
duke@1 | 2735 | attach(result, dc); |
duke@1 | 2736 | return result; |
duke@1 | 2737 | } |
duke@1 | 2738 | |
duke@1 | 2739 | /** EnumDeclaration = ENUM Ident [IMPLEMENTS TypeList] EnumBody |
duke@1 | 2740 | * @param mods The modifiers starting the enum declaration |
duke@1 | 2741 | * @param dc The documentation comment for the enum, or null. |
duke@1 | 2742 | */ |
jjg@1280 | 2743 | protected JCClassDecl enumDeclaration(JCModifiers mods, Comment dc) { |
mcimadamore@1113 | 2744 | int pos = token.pos; |
duke@1 | 2745 | accept(ENUM); |
duke@1 | 2746 | Name name = ident(); |
duke@1 | 2747 | |
duke@1 | 2748 | List<JCExpression> implementing = List.nil(); |
mcimadamore@1113 | 2749 | if (token.kind == IMPLEMENTS) { |
mcimadamore@1113 | 2750 | nextToken(); |
duke@1 | 2751 | implementing = typeList(); |
duke@1 | 2752 | } |
duke@1 | 2753 | |
duke@1 | 2754 | List<JCTree> defs = enumBody(name); |
jjg@482 | 2755 | mods.flags |= Flags.ENUM; |
duke@1 | 2756 | JCClassDecl result = toP(F.at(pos). |
jjg@482 | 2757 | ClassDef(mods, name, List.<JCTypeParameter>nil(), |
duke@1 | 2758 | null, implementing, defs)); |
duke@1 | 2759 | attach(result, dc); |
duke@1 | 2760 | return result; |
duke@1 | 2761 | } |
duke@1 | 2762 | |
duke@1 | 2763 | /** EnumBody = "{" { EnumeratorDeclarationList } [","] |
duke@1 | 2764 | * [ ";" {ClassBodyDeclaration} ] "}" |
duke@1 | 2765 | */ |
duke@1 | 2766 | List<JCTree> enumBody(Name enumName) { |
duke@1 | 2767 | accept(LBRACE); |
duke@1 | 2768 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
mcimadamore@1113 | 2769 | if (token.kind == COMMA) { |
mcimadamore@1113 | 2770 | nextToken(); |
mcimadamore@1113 | 2771 | } else if (token.kind != RBRACE && token.kind != SEMI) { |
duke@1 | 2772 | defs.append(enumeratorDeclaration(enumName)); |
mcimadamore@1113 | 2773 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2774 | nextToken(); |
mcimadamore@1113 | 2775 | if (token.kind == RBRACE || token.kind == SEMI) break; |
duke@1 | 2776 | defs.append(enumeratorDeclaration(enumName)); |
duke@1 | 2777 | } |
mcimadamore@1113 | 2778 | if (token.kind != SEMI && token.kind != RBRACE) { |
mcimadamore@1113 | 2779 | defs.append(syntaxError(token.pos, "expected3", |
mcimadamore@80 | 2780 | COMMA, RBRACE, SEMI)); |
mcimadamore@1113 | 2781 | nextToken(); |
duke@1 | 2782 | } |
duke@1 | 2783 | } |
mcimadamore@1113 | 2784 | if (token.kind == SEMI) { |
mcimadamore@1113 | 2785 | nextToken(); |
mcimadamore@1113 | 2786 | while (token.kind != RBRACE && token.kind != EOF) { |
duke@1 | 2787 | defs.appendList(classOrInterfaceBodyDeclaration(enumName, |
duke@1 | 2788 | false)); |
ksrini@1138 | 2789 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2790 | // error recovery |
duke@1 | 2791 | skip(false, true, true, false); |
duke@1 | 2792 | } |
duke@1 | 2793 | } |
duke@1 | 2794 | } |
duke@1 | 2795 | accept(RBRACE); |
duke@1 | 2796 | return defs.toList(); |
duke@1 | 2797 | } |
duke@1 | 2798 | |
duke@1 | 2799 | /** EnumeratorDeclaration = AnnotationsOpt [TypeArguments] IDENTIFIER [ Arguments ] [ "{" ClassBody "}" ] |
duke@1 | 2800 | */ |
duke@1 | 2801 | JCTree enumeratorDeclaration(Name enumName) { |
jjg@1280 | 2802 | Comment dc = token.comment(CommentStyle.JAVADOC); |
duke@1 | 2803 | int flags = Flags.PUBLIC|Flags.STATIC|Flags.FINAL|Flags.ENUM; |
mcimadamore@1125 | 2804 | if (token.deprecatedFlag()) { |
duke@1 | 2805 | flags |= Flags.DEPRECATED; |
duke@1 | 2806 | } |
mcimadamore@1113 | 2807 | int pos = token.pos; |
jjg@722 | 2808 | List<JCAnnotation> annotations = annotationsOpt(); |
duke@1 | 2809 | JCModifiers mods = F.at(annotations.isEmpty() ? Position.NOPOS : pos).Modifiers(flags, annotations); |
duke@1 | 2810 | List<JCExpression> typeArgs = typeArgumentsOpt(); |
mcimadamore@1113 | 2811 | int identPos = token.pos; |
duke@1 | 2812 | Name name = ident(); |
mcimadamore@1113 | 2813 | int createPos = token.pos; |
mcimadamore@1113 | 2814 | List<JCExpression> args = (token.kind == LPAREN) |
duke@1 | 2815 | ? arguments() : List.<JCExpression>nil(); |
duke@1 | 2816 | JCClassDecl body = null; |
mcimadamore@1113 | 2817 | if (token.kind == LBRACE) { |
duke@1 | 2818 | JCModifiers mods1 = F.at(Position.NOPOS).Modifiers(Flags.ENUM | Flags.STATIC); |
duke@1 | 2819 | List<JCTree> defs = classOrInterfaceBody(names.empty, false); |
duke@1 | 2820 | body = toP(F.at(identPos).AnonymousClassDef(mods1, defs)); |
duke@1 | 2821 | } |
duke@1 | 2822 | if (args.isEmpty() && body == null) |
jjg@469 | 2823 | createPos = identPos; |
jjg@469 | 2824 | JCIdent ident = F.at(identPos).Ident(enumName); |
duke@1 | 2825 | JCNewClass create = F.at(createPos).NewClass(null, typeArgs, ident, args, body); |
jjg@469 | 2826 | if (createPos != identPos) |
mcimadamore@1113 | 2827 | storeEnd(create, S.prevToken().endPos); |
jjg@469 | 2828 | ident = F.at(identPos).Ident(enumName); |
duke@1 | 2829 | JCTree result = toP(F.at(pos).VarDef(mods, name, ident, create)); |
duke@1 | 2830 | attach(result, dc); |
duke@1 | 2831 | return result; |
duke@1 | 2832 | } |
duke@1 | 2833 | |
duke@1 | 2834 | /** TypeList = Type {"," Type} |
duke@1 | 2835 | */ |
duke@1 | 2836 | List<JCExpression> typeList() { |
duke@1 | 2837 | ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>(); |
jjg@111 | 2838 | ts.append(parseType()); |
mcimadamore@1113 | 2839 | while (token.kind == COMMA) { |
mcimadamore@1113 | 2840 | nextToken(); |
jjg@111 | 2841 | ts.append(parseType()); |
duke@1 | 2842 | } |
duke@1 | 2843 | return ts.toList(); |
duke@1 | 2844 | } |
duke@1 | 2845 | |
duke@1 | 2846 | /** ClassBody = "{" {ClassBodyDeclaration} "}" |
duke@1 | 2847 | * InterfaceBody = "{" {InterfaceBodyDeclaration} "}" |
duke@1 | 2848 | */ |
duke@1 | 2849 | List<JCTree> classOrInterfaceBody(Name className, boolean isInterface) { |
duke@1 | 2850 | accept(LBRACE); |
ksrini@1138 | 2851 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2852 | // error recovery |
duke@1 | 2853 | skip(false, true, false, false); |
mcimadamore@1113 | 2854 | if (token.kind == LBRACE) |
mcimadamore@1113 | 2855 | nextToken(); |
duke@1 | 2856 | } |
duke@1 | 2857 | ListBuffer<JCTree> defs = new ListBuffer<JCTree>(); |
mcimadamore@1113 | 2858 | while (token.kind != RBRACE && token.kind != EOF) { |
duke@1 | 2859 | defs.appendList(classOrInterfaceBodyDeclaration(className, isInterface)); |
ksrini@1138 | 2860 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2861 | // error recovery |
duke@1 | 2862 | skip(false, true, true, false); |
duke@1 | 2863 | } |
duke@1 | 2864 | } |
duke@1 | 2865 | accept(RBRACE); |
duke@1 | 2866 | return defs.toList(); |
duke@1 | 2867 | } |
duke@1 | 2868 | |
duke@1 | 2869 | /** ClassBodyDeclaration = |
duke@1 | 2870 | * ";" |
duke@1 | 2871 | * | [STATIC] Block |
duke@1 | 2872 | * | ModifiersOpt |
duke@1 | 2873 | * ( Type Ident |
duke@1 | 2874 | * ( VariableDeclaratorsRest ";" | MethodDeclaratorRest ) |
duke@1 | 2875 | * | VOID Ident MethodDeclaratorRest |
duke@1 | 2876 | * | TypeParameters (Type | VOID) Ident MethodDeclaratorRest |
duke@1 | 2877 | * | Ident ConstructorDeclaratorRest |
duke@1 | 2878 | * | TypeParameters Ident ConstructorDeclaratorRest |
duke@1 | 2879 | * | ClassOrInterfaceOrEnumDeclaration |
duke@1 | 2880 | * ) |
duke@1 | 2881 | * InterfaceBodyDeclaration = |
duke@1 | 2882 | * ";" |
duke@1 | 2883 | * | ModifiersOpt Type Ident |
duke@1 | 2884 | * ( ConstantDeclaratorsRest | InterfaceMethodDeclaratorRest ";" ) |
duke@1 | 2885 | */ |
ksrini@1074 | 2886 | protected List<JCTree> classOrInterfaceBodyDeclaration(Name className, boolean isInterface) { |
mcimadamore@1113 | 2887 | if (token.kind == SEMI) { |
mcimadamore@1113 | 2888 | nextToken(); |
jjg@667 | 2889 | return List.<JCTree>nil(); |
duke@1 | 2890 | } else { |
jjg@1280 | 2891 | Comment dc = token.comment(CommentStyle.JAVADOC); |
mcimadamore@1113 | 2892 | int pos = token.pos; |
duke@1 | 2893 | JCModifiers mods = modifiersOpt(); |
mcimadamore@1113 | 2894 | if (token.kind == CLASS || |
mcimadamore@1113 | 2895 | token.kind == INTERFACE || |
mcimadamore@1113 | 2896 | allowEnums && token.kind == ENUM) { |
duke@1 | 2897 | return List.<JCTree>of(classOrInterfaceOrEnumDeclaration(mods, dc)); |
mcimadamore@1113 | 2898 | } else if (token.kind == LBRACE && !isInterface && |
duke@1 | 2899 | (mods.flags & Flags.StandardFlags & ~Flags.STATIC) == 0 && |
duke@1 | 2900 | mods.annotations.isEmpty()) { |
duke@1 | 2901 | return List.<JCTree>of(block(pos, mods.flags)); |
duke@1 | 2902 | } else { |
mcimadamore@1113 | 2903 | pos = token.pos; |
duke@1 | 2904 | List<JCTypeParameter> typarams = typeParametersOpt(); |
jjg@817 | 2905 | // if there are type parameters but no modifiers, save the start |
jjg@817 | 2906 | // position of the method in the modifiers. |
jjg@817 | 2907 | if (typarams.nonEmpty() && mods.pos == Position.NOPOS) { |
jjg@817 | 2908 | mods.pos = pos; |
jjg@817 | 2909 | storeEnd(mods, pos); |
jjg@817 | 2910 | } |
mcimadamore@1113 | 2911 | Token tk = token; |
mcimadamore@1113 | 2912 | pos = token.pos; |
duke@1 | 2913 | JCExpression type; |
mcimadamore@1113 | 2914 | boolean isVoid = token.kind == VOID; |
duke@1 | 2915 | if (isVoid) { |
duke@1 | 2916 | type = to(F.at(pos).TypeIdent(TypeTags.VOID)); |
mcimadamore@1113 | 2917 | nextToken(); |
duke@1 | 2918 | } else { |
jjg@722 | 2919 | type = parseType(); |
duke@1 | 2920 | } |
jjg@1127 | 2921 | if (token.kind == LPAREN && !isInterface && type.hasTag(IDENT)) { |
mcimadamore@1113 | 2922 | if (isInterface || tk.name() != className) |
jjg@726 | 2923 | error(pos, "invalid.meth.decl.ret.type.req"); |
duke@1 | 2924 | return List.of(methodDeclaratorRest( |
duke@1 | 2925 | pos, mods, null, names.init, typarams, |
duke@1 | 2926 | isInterface, true, dc)); |
duke@1 | 2927 | } else { |
mcimadamore@1113 | 2928 | pos = token.pos; |
mcimadamore@1113 | 2929 | Name name = ident(); |
mcimadamore@1113 | 2930 | if (token.kind == LPAREN) { |
duke@1 | 2931 | return List.of(methodDeclaratorRest( |
duke@1 | 2932 | pos, mods, type, name, typarams, |
duke@1 | 2933 | isInterface, isVoid, dc)); |
duke@1 | 2934 | } else if (!isVoid && typarams.isEmpty()) { |
duke@1 | 2935 | List<JCTree> defs = |
duke@1 | 2936 | variableDeclaratorsRest(pos, mods, type, name, isInterface, dc, |
duke@1 | 2937 | new ListBuffer<JCTree>()).toList(); |
mcimadamore@1113 | 2938 | storeEnd(defs.last(), token.endPos); |
duke@1 | 2939 | accept(SEMI); |
duke@1 | 2940 | return defs; |
duke@1 | 2941 | } else { |
mcimadamore@1113 | 2942 | pos = token.pos; |
duke@1 | 2943 | List<JCTree> err = isVoid |
duke@1 | 2944 | ? List.<JCTree>of(toP(F.at(pos).MethodDef(mods, name, type, typarams, |
duke@1 | 2945 | List.<JCVariableDecl>nil(), List.<JCExpression>nil(), null, null))) |
duke@1 | 2946 | : null; |
mcimadamore@1113 | 2947 | return List.<JCTree>of(syntaxError(token.pos, err, "expected", LPAREN)); |
duke@1 | 2948 | } |
duke@1 | 2949 | } |
duke@1 | 2950 | } |
duke@1 | 2951 | } |
duke@1 | 2952 | } |
duke@1 | 2953 | |
duke@1 | 2954 | /** MethodDeclaratorRest = |
jjg@722 | 2955 | * FormalParameters BracketsOpt [Throws TypeList] ( MethodBody | [DEFAULT AnnotationValue] ";") |
duke@1 | 2956 | * VoidMethodDeclaratorRest = |
jjg@722 | 2957 | * FormalParameters [Throws TypeList] ( MethodBody | ";") |
duke@1 | 2958 | * InterfaceMethodDeclaratorRest = |
jjg@722 | 2959 | * FormalParameters BracketsOpt [THROWS TypeList] ";" |
duke@1 | 2960 | * VoidInterfaceMethodDeclaratorRest = |
jjg@722 | 2961 | * FormalParameters [THROWS TypeList] ";" |
duke@1 | 2962 | * ConstructorDeclaratorRest = |
jjg@722 | 2963 | * "(" FormalParameterListOpt ")" [THROWS TypeList] MethodBody |
duke@1 | 2964 | */ |
ksrini@1148 | 2965 | protected JCTree methodDeclaratorRest(int pos, |
duke@1 | 2966 | JCModifiers mods, |
duke@1 | 2967 | JCExpression type, |
duke@1 | 2968 | Name name, |
duke@1 | 2969 | List<JCTypeParameter> typarams, |
duke@1 | 2970 | boolean isInterface, boolean isVoid, |
jjg@1280 | 2971 | Comment dc) { |
duke@1 | 2972 | List<JCVariableDecl> params = formalParameters(); |
jjg@722 | 2973 | if (!isVoid) type = bracketsOpt(type); |
duke@1 | 2974 | List<JCExpression> thrown = List.nil(); |
mcimadamore@1113 | 2975 | if (token.kind == THROWS) { |
mcimadamore@1113 | 2976 | nextToken(); |
duke@1 | 2977 | thrown = qualidentList(); |
duke@1 | 2978 | } |
duke@1 | 2979 | JCBlock body = null; |
duke@1 | 2980 | JCExpression defaultValue; |
mcimadamore@1113 | 2981 | if (token.kind == LBRACE) { |
duke@1 | 2982 | body = block(); |
duke@1 | 2983 | defaultValue = null; |
duke@1 | 2984 | } else { |
mcimadamore@1113 | 2985 | if (token.kind == DEFAULT) { |
duke@1 | 2986 | accept(DEFAULT); |
duke@1 | 2987 | defaultValue = annotationValue(); |
duke@1 | 2988 | } else { |
duke@1 | 2989 | defaultValue = null; |
duke@1 | 2990 | } |
duke@1 | 2991 | accept(SEMI); |
ksrini@1138 | 2992 | if (token.pos <= endPosTable.errorEndPos) { |
duke@1 | 2993 | // error recovery |
duke@1 | 2994 | skip(false, true, false, false); |
mcimadamore@1113 | 2995 | if (token.kind == LBRACE) { |
duke@1 | 2996 | body = block(); |
duke@1 | 2997 | } |
duke@1 | 2998 | } |
duke@1 | 2999 | } |
jjg@482 | 3000 | |
duke@1 | 3001 | JCMethodDecl result = |
duke@1 | 3002 | toP(F.at(pos).MethodDef(mods, name, type, typarams, |
jjg@722 | 3003 | params, thrown, |
duke@1 | 3004 | body, defaultValue)); |
duke@1 | 3005 | attach(result, dc); |
duke@1 | 3006 | return result; |
duke@1 | 3007 | } |
duke@1 | 3008 | |
jjg@722 | 3009 | /** QualidentList = Qualident {"," Qualident} |
duke@1 | 3010 | */ |
duke@1 | 3011 | List<JCExpression> qualidentList() { |
duke@1 | 3012 | ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>(); |
jjg@722 | 3013 | ts.append(qualident()); |
mcimadamore@1113 | 3014 | while (token.kind == COMMA) { |
mcimadamore@1113 | 3015 | nextToken(); |
jjg@722 | 3016 | ts.append(qualident()); |
duke@1 | 3017 | } |
duke@1 | 3018 | return ts.toList(); |
duke@1 | 3019 | } |
duke@1 | 3020 | |
jjg@1326 | 3021 | /** |
jjg@1326 | 3022 | * {@literal |
jjg@1326 | 3023 | * TypeParametersOpt = ["<" TypeParameter {"," TypeParameter} ">"] |
jjg@1326 | 3024 | * } |
duke@1 | 3025 | */ |
duke@1 | 3026 | List<JCTypeParameter> typeParametersOpt() { |
mcimadamore@1113 | 3027 | if (token.kind == LT) { |
duke@1 | 3028 | checkGenerics(); |
duke@1 | 3029 | ListBuffer<JCTypeParameter> typarams = new ListBuffer<JCTypeParameter>(); |
mcimadamore@1113 | 3030 | nextToken(); |
duke@1 | 3031 | typarams.append(typeParameter()); |
mcimadamore@1113 | 3032 | while (token.kind == COMMA) { |
mcimadamore@1113 | 3033 | nextToken(); |
duke@1 | 3034 | typarams.append(typeParameter()); |
duke@1 | 3035 | } |
duke@1 | 3036 | accept(GT); |
duke@1 | 3037 | return typarams.toList(); |
duke@1 | 3038 | } else { |
duke@1 | 3039 | return List.nil(); |
duke@1 | 3040 | } |
duke@1 | 3041 | } |
duke@1 | 3042 | |
jjg@1326 | 3043 | /** |
jjg@1326 | 3044 | * {@literal |
jjg@1326 | 3045 | * TypeParameter = TypeVariable [TypeParameterBound] |
duke@1 | 3046 | * TypeParameterBound = EXTENDS Type {"&" Type} |
duke@1 | 3047 | * TypeVariable = Ident |
jjg@1326 | 3048 | * } |
duke@1 | 3049 | */ |
duke@1 | 3050 | JCTypeParameter typeParameter() { |
mcimadamore@1113 | 3051 | int pos = token.pos; |
duke@1 | 3052 | Name name = ident(); |
duke@1 | 3053 | ListBuffer<JCExpression> bounds = new ListBuffer<JCExpression>(); |
mcimadamore@1113 | 3054 | if (token.kind == EXTENDS) { |
mcimadamore@1113 | 3055 | nextToken(); |
jjg@111 | 3056 | bounds.append(parseType()); |
mcimadamore@1113 | 3057 | while (token.kind == AMP) { |
mcimadamore@1113 | 3058 | nextToken(); |
jjg@111 | 3059 | bounds.append(parseType()); |
duke@1 | 3060 | } |
duke@1 | 3061 | } |
jjg@722 | 3062 | return toP(F.at(pos).TypeParameter(name, bounds.toList())); |
duke@1 | 3063 | } |
duke@1 | 3064 | |
duke@1 | 3065 | /** FormalParameters = "(" [ FormalParameterList ] ")" |
duke@1 | 3066 | * FormalParameterList = [ FormalParameterListNovarargs , ] LastFormalParameter |
duke@1 | 3067 | * FormalParameterListNovarargs = [ FormalParameterListNovarargs , ] FormalParameter |
duke@1 | 3068 | */ |
duke@1 | 3069 | List<JCVariableDecl> formalParameters() { |
duke@1 | 3070 | ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
duke@1 | 3071 | JCVariableDecl lastParam = null; |
duke@1 | 3072 | accept(LPAREN); |
mcimadamore@1113 | 3073 | if (token.kind != RPAREN) { |
duke@1 | 3074 | params.append(lastParam = formalParameter()); |
mcimadamore@1113 | 3075 | while ((lastParam.mods.flags & Flags.VARARGS) == 0 && token.kind == COMMA) { |
mcimadamore@1113 | 3076 | nextToken(); |
duke@1 | 3077 | params.append(lastParam = formalParameter()); |
duke@1 | 3078 | } |
duke@1 | 3079 | } |
duke@1 | 3080 | accept(RPAREN); |
duke@1 | 3081 | return params.toList(); |
duke@1 | 3082 | } |
duke@1 | 3083 | |
mcimadamore@1144 | 3084 | List<JCVariableDecl> implicitParameters(boolean hasParens) { |
mcimadamore@1144 | 3085 | if (hasParens) { |
mcimadamore@1144 | 3086 | accept(LPAREN); |
mcimadamore@1144 | 3087 | } |
mcimadamore@1144 | 3088 | ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>(); |
mcimadamore@1144 | 3089 | if (token.kind != RPAREN && token.kind != ARROW) { |
mcimadamore@1144 | 3090 | params.append(implicitParameter()); |
mcimadamore@1144 | 3091 | while (token.kind == COMMA) { |
mcimadamore@1144 | 3092 | nextToken(); |
mcimadamore@1144 | 3093 | params.append(implicitParameter()); |
mcimadamore@1144 | 3094 | } |
mcimadamore@1144 | 3095 | } |
mcimadamore@1144 | 3096 | if (hasParens) { |
mcimadamore@1144 | 3097 | accept(RPAREN); |
mcimadamore@1144 | 3098 | } |
mcimadamore@1144 | 3099 | return params.toList(); |
mcimadamore@1144 | 3100 | } |
mcimadamore@1144 | 3101 | |
duke@1 | 3102 | JCModifiers optFinal(long flags) { |
duke@1 | 3103 | JCModifiers mods = modifiersOpt(); |
duke@1 | 3104 | checkNoMods(mods.flags & ~(Flags.FINAL | Flags.DEPRECATED)); |
duke@1 | 3105 | mods.flags |= flags; |
duke@1 | 3106 | return mods; |
duke@1 | 3107 | } |
duke@1 | 3108 | |
duke@1 | 3109 | /** FormalParameter = { FINAL | '@' Annotation } Type VariableDeclaratorId |
duke@1 | 3110 | * LastFormalParameter = { FINAL | '@' Annotation } Type '...' Ident | FormalParameter |
duke@1 | 3111 | */ |
ksrini@1074 | 3112 | protected JCVariableDecl formalParameter() { |
duke@1 | 3113 | JCModifiers mods = optFinal(Flags.PARAMETER); |
jjg@111 | 3114 | JCExpression type = parseType(); |
mcimadamore@1113 | 3115 | if (token.kind == ELLIPSIS) { |
duke@1 | 3116 | checkVarargs(); |
duke@1 | 3117 | mods.flags |= Flags.VARARGS; |
mcimadamore@1113 | 3118 | type = to(F.at(token.pos).TypeArray(type)); |
mcimadamore@1113 | 3119 | nextToken(); |
duke@1 | 3120 | } |
duke@1 | 3121 | return variableDeclaratorId(mods, type); |
duke@1 | 3122 | } |
duke@1 | 3123 | |
mcimadamore@1144 | 3124 | protected JCVariableDecl implicitParameter() { |
mcimadamore@1144 | 3125 | JCModifiers mods = F.at(token.pos).Modifiers(Flags.PARAMETER); |
mcimadamore@1144 | 3126 | return variableDeclaratorId(mods, null); |
mcimadamore@1144 | 3127 | } |
mcimadamore@1144 | 3128 | |
duke@1 | 3129 | /* ---------- auxiliary methods -------------- */ |
duke@1 | 3130 | |
jjg@726 | 3131 | void error(int pos, String key, Object ... args) { |
jjg@726 | 3132 | log.error(DiagnosticFlag.SYNTAX, pos, key, args); |
jjg@726 | 3133 | } |
jjg@726 | 3134 | |
ksrini@1074 | 3135 | void error(DiagnosticPosition pos, String key, Object ... args) { |
ksrini@1074 | 3136 | log.error(DiagnosticFlag.SYNTAX, pos, key, args); |
ksrini@1074 | 3137 | } |
ksrini@1074 | 3138 | |
jjg@726 | 3139 | void warning(int pos, String key, Object ... args) { |
jjg@726 | 3140 | log.warning(pos, key, args); |
jjg@726 | 3141 | } |
jjg@726 | 3142 | |
duke@1 | 3143 | /** Check that given tree is a legal expression statement. |
duke@1 | 3144 | */ |
duke@1 | 3145 | protected JCExpression checkExprStat(JCExpression t) { |
duke@1 | 3146 | switch(t.getTag()) { |
jjg@1127 | 3147 | case PREINC: case PREDEC: |
jjg@1127 | 3148 | case POSTINC: case POSTDEC: |
jjg@1127 | 3149 | case ASSIGN: |
jjg@1127 | 3150 | case BITOR_ASG: case BITXOR_ASG: case BITAND_ASG: |
jjg@1127 | 3151 | case SL_ASG: case SR_ASG: case USR_ASG: |
jjg@1127 | 3152 | case PLUS_ASG: case MINUS_ASG: |
jjg@1127 | 3153 | case MUL_ASG: case DIV_ASG: case MOD_ASG: |
jjg@1127 | 3154 | case APPLY: case NEWCLASS: |
jjg@1127 | 3155 | case ERRONEOUS: |
duke@1 | 3156 | return t; |
duke@1 | 3157 | default: |
ksrini@1074 | 3158 | JCExpression ret = F.at(t.pos).Erroneous(List.<JCTree>of(t)); |
ksrini@1074 | 3159 | error(ret, "not.stmt"); |
ksrini@1074 | 3160 | return ret; |
duke@1 | 3161 | } |
duke@1 | 3162 | } |
duke@1 | 3163 | |
duke@1 | 3164 | /** Return precedence of operator represented by token, |
duke@1 | 3165 | * -1 if token is not a binary operator. @see TreeInfo.opPrec |
duke@1 | 3166 | */ |
mcimadamore@1113 | 3167 | static int prec(TokenKind token) { |
jjg@1127 | 3168 | JCTree.Tag oc = optag(token); |
jjg@1127 | 3169 | return (oc != NO_TAG) ? TreeInfo.opPrec(oc) : -1; |
duke@1 | 3170 | } |
duke@1 | 3171 | |
jjg@516 | 3172 | /** |
jjg@516 | 3173 | * Return the lesser of two positions, making allowance for either one |
jjg@516 | 3174 | * being unset. |
jjg@516 | 3175 | */ |
jjg@516 | 3176 | static int earlier(int pos1, int pos2) { |
jjg@516 | 3177 | if (pos1 == Position.NOPOS) |
jjg@516 | 3178 | return pos2; |
jjg@516 | 3179 | if (pos2 == Position.NOPOS) |
jjg@516 | 3180 | return pos1; |
jjg@516 | 3181 | return (pos1 < pos2 ? pos1 : pos2); |
jjg@516 | 3182 | } |
jjg@516 | 3183 | |
duke@1 | 3184 | /** Return operation tag of binary operator represented by token, |
jjg@1127 | 3185 | * No_TAG if token is not a binary operator. |
duke@1 | 3186 | */ |
jjg@1127 | 3187 | static JCTree.Tag optag(TokenKind token) { |
duke@1 | 3188 | switch (token) { |
duke@1 | 3189 | case BARBAR: |
jjg@1127 | 3190 | return OR; |
duke@1 | 3191 | case AMPAMP: |
jjg@1127 | 3192 | return AND; |
duke@1 | 3193 | case BAR: |
jjg@1127 | 3194 | return BITOR; |
duke@1 | 3195 | case BAREQ: |
jjg@1127 | 3196 | return BITOR_ASG; |
duke@1 | 3197 | case CARET: |
jjg@1127 | 3198 | return BITXOR; |
duke@1 | 3199 | case CARETEQ: |
jjg@1127 | 3200 | return BITXOR_ASG; |
duke@1 | 3201 | case AMP: |
jjg@1127 | 3202 | return BITAND; |
duke@1 | 3203 | case AMPEQ: |
jjg@1127 | 3204 | return BITAND_ASG; |
duke@1 | 3205 | case EQEQ: |
jjg@1127 | 3206 | return JCTree.Tag.EQ; |
duke@1 | 3207 | case BANGEQ: |
jjg@1127 | 3208 | return NE; |
duke@1 | 3209 | case LT: |
jjg@1127 | 3210 | return JCTree.Tag.LT; |
duke@1 | 3211 | case GT: |
jjg@1127 | 3212 | return JCTree.Tag.GT; |
duke@1 | 3213 | case LTEQ: |
jjg@1127 | 3214 | return LE; |
duke@1 | 3215 | case GTEQ: |
jjg@1127 | 3216 | return GE; |
duke@1 | 3217 | case LTLT: |
jjg@1127 | 3218 | return SL; |
duke@1 | 3219 | case LTLTEQ: |
jjg@1127 | 3220 | return SL_ASG; |
duke@1 | 3221 | case GTGT: |
jjg@1127 | 3222 | return SR; |
duke@1 | 3223 | case GTGTEQ: |
jjg@1127 | 3224 | return SR_ASG; |
duke@1 | 3225 | case GTGTGT: |
jjg@1127 | 3226 | return USR; |
duke@1 | 3227 | case GTGTGTEQ: |
jjg@1127 | 3228 | return USR_ASG; |
duke@1 | 3229 | case PLUS: |
jjg@1127 | 3230 | return JCTree.Tag.PLUS; |
duke@1 | 3231 | case PLUSEQ: |
jjg@1127 | 3232 | return PLUS_ASG; |
duke@1 | 3233 | case SUB: |
jjg@1127 | 3234 | return MINUS; |
duke@1 | 3235 | case SUBEQ: |
jjg@1127 | 3236 | return MINUS_ASG; |
duke@1 | 3237 | case STAR: |
jjg@1127 | 3238 | return MUL; |
duke@1 | 3239 | case STAREQ: |
jjg@1127 | 3240 | return MUL_ASG; |
duke@1 | 3241 | case SLASH: |
jjg@1127 | 3242 | return DIV; |
duke@1 | 3243 | case SLASHEQ: |
jjg@1127 | 3244 | return DIV_ASG; |
duke@1 | 3245 | case PERCENT: |
jjg@1127 | 3246 | return MOD; |
duke@1 | 3247 | case PERCENTEQ: |
jjg@1127 | 3248 | return MOD_ASG; |
duke@1 | 3249 | case INSTANCEOF: |
jjg@1127 | 3250 | return TYPETEST; |
duke@1 | 3251 | default: |
jjg@1127 | 3252 | return NO_TAG; |
duke@1 | 3253 | } |
duke@1 | 3254 | } |
duke@1 | 3255 | |
duke@1 | 3256 | /** Return operation tag of unary operator represented by token, |
jjg@1127 | 3257 | * No_TAG if token is not a binary operator. |
duke@1 | 3258 | */ |
jjg@1127 | 3259 | static JCTree.Tag unoptag(TokenKind token) { |
duke@1 | 3260 | switch (token) { |
duke@1 | 3261 | case PLUS: |
jjg@1127 | 3262 | return POS; |
duke@1 | 3263 | case SUB: |
jjg@1127 | 3264 | return NEG; |
duke@1 | 3265 | case BANG: |
jjg@1127 | 3266 | return NOT; |
duke@1 | 3267 | case TILDE: |
jjg@1127 | 3268 | return COMPL; |
duke@1 | 3269 | case PLUSPLUS: |
jjg@1127 | 3270 | return PREINC; |
duke@1 | 3271 | case SUBSUB: |
jjg@1127 | 3272 | return PREDEC; |
duke@1 | 3273 | default: |
jjg@1127 | 3274 | return NO_TAG; |
duke@1 | 3275 | } |
duke@1 | 3276 | } |
duke@1 | 3277 | |
duke@1 | 3278 | /** Return type tag of basic type represented by token, |
duke@1 | 3279 | * -1 if token is not a basic type identifier. |
duke@1 | 3280 | */ |
mcimadamore@1113 | 3281 | static int typetag(TokenKind token) { |
duke@1 | 3282 | switch (token) { |
duke@1 | 3283 | case BYTE: |
duke@1 | 3284 | return TypeTags.BYTE; |
duke@1 | 3285 | case CHAR: |
duke@1 | 3286 | return TypeTags.CHAR; |
duke@1 | 3287 | case SHORT: |
duke@1 | 3288 | return TypeTags.SHORT; |
duke@1 | 3289 | case INT: |
duke@1 | 3290 | return TypeTags.INT; |
duke@1 | 3291 | case LONG: |
duke@1 | 3292 | return TypeTags.LONG; |
duke@1 | 3293 | case FLOAT: |
duke@1 | 3294 | return TypeTags.FLOAT; |
duke@1 | 3295 | case DOUBLE: |
duke@1 | 3296 | return TypeTags.DOUBLE; |
duke@1 | 3297 | case BOOLEAN: |
duke@1 | 3298 | return TypeTags.BOOLEAN; |
duke@1 | 3299 | default: |
duke@1 | 3300 | return -1; |
duke@1 | 3301 | } |
duke@1 | 3302 | } |
duke@1 | 3303 | |
duke@1 | 3304 | void checkGenerics() { |
duke@1 | 3305 | if (!allowGenerics) { |
mcimadamore@1113 | 3306 | error(token.pos, "generics.not.supported.in.source", source.name); |
duke@1 | 3307 | allowGenerics = true; |
duke@1 | 3308 | } |
duke@1 | 3309 | } |
duke@1 | 3310 | void checkVarargs() { |
duke@1 | 3311 | if (!allowVarargs) { |
mcimadamore@1113 | 3312 | error(token.pos, "varargs.not.supported.in.source", source.name); |
duke@1 | 3313 | allowVarargs = true; |
duke@1 | 3314 | } |
duke@1 | 3315 | } |
duke@1 | 3316 | void checkForeach() { |
duke@1 | 3317 | if (!allowForeach) { |
mcimadamore@1113 | 3318 | error(token.pos, "foreach.not.supported.in.source", source.name); |
duke@1 | 3319 | allowForeach = true; |
duke@1 | 3320 | } |
duke@1 | 3321 | } |
duke@1 | 3322 | void checkStaticImports() { |
duke@1 | 3323 | if (!allowStaticImport) { |
mcimadamore@1113 | 3324 | error(token.pos, "static.import.not.supported.in.source", source.name); |
duke@1 | 3325 | allowStaticImport = true; |
duke@1 | 3326 | } |
duke@1 | 3327 | } |
duke@1 | 3328 | void checkAnnotations() { |
duke@1 | 3329 | if (!allowAnnotations) { |
mcimadamore@1113 | 3330 | error(token.pos, "annotations.not.supported.in.source", source.name); |
duke@1 | 3331 | allowAnnotations = true; |
duke@1 | 3332 | } |
duke@1 | 3333 | } |
mcimadamore@537 | 3334 | void checkDiamond() { |
mcimadamore@537 | 3335 | if (!allowDiamond) { |
mcimadamore@1113 | 3336 | error(token.pos, "diamond.not.supported.in.source", source.name); |
mcimadamore@537 | 3337 | allowDiamond = true; |
mcimadamore@537 | 3338 | } |
mcimadamore@537 | 3339 | } |
mcimadamore@550 | 3340 | void checkMulticatch() { |
mcimadamore@550 | 3341 | if (!allowMulticatch) { |
mcimadamore@1113 | 3342 | error(token.pos, "multicatch.not.supported.in.source", source.name); |
mcimadamore@550 | 3343 | allowMulticatch = true; |
darcy@609 | 3344 | } |
darcy@609 | 3345 | } |
mcimadamore@743 | 3346 | void checkTryWithResources() { |
darcy@609 | 3347 | if (!allowTWR) { |
mcimadamore@1113 | 3348 | error(token.pos, "try.with.resources.not.supported.in.source", source.name); |
darcy@609 | 3349 | allowTWR = true; |
darcy@609 | 3350 | } |
mcimadamore@550 | 3351 | } |
mcimadamore@1144 | 3352 | void checkLambda() { |
mcimadamore@1144 | 3353 | if (!allowLambda) { |
mcimadamore@1144 | 3354 | log.error(token.pos, "lambda.not.supported.in.source", source.name); |
mcimadamore@1144 | 3355 | allowLambda = true; |
mcimadamore@1144 | 3356 | } |
mcimadamore@1144 | 3357 | } |
mcimadamore@1145 | 3358 | void checkMethodReferences() { |
mcimadamore@1145 | 3359 | if (!allowMethodReferences) { |
mcimadamore@1145 | 3360 | log.error(token.pos, "method.references.not.supported.in.source", source.name); |
mcimadamore@1145 | 3361 | allowMethodReferences = true; |
mcimadamore@1145 | 3362 | } |
mcimadamore@1145 | 3363 | } |
ksrini@1138 | 3364 | |
ksrini@1138 | 3365 | /* |
ksrini@1138 | 3366 | * a functional source tree and end position mappings |
ksrini@1138 | 3367 | */ |
ksrini@1138 | 3368 | protected class SimpleEndPosTable extends AbstractEndPosTable { |
ksrini@1138 | 3369 | |
ksrini@1138 | 3370 | private final Map<JCTree, Integer> endPosMap; |
ksrini@1138 | 3371 | |
ksrini@1138 | 3372 | SimpleEndPosTable() { |
ksrini@1138 | 3373 | endPosMap = new HashMap<JCTree, Integer>(); |
ksrini@1138 | 3374 | } |
ksrini@1138 | 3375 | |
ksrini@1138 | 3376 | protected void storeEnd(JCTree tree, int endpos) { |
ksrini@1138 | 3377 | endPosMap.put(tree, errorEndPos > endpos ? errorEndPos : endpos); |
ksrini@1138 | 3378 | } |
ksrini@1138 | 3379 | |
ksrini@1138 | 3380 | protected <T extends JCTree> T to(T t) { |
ksrini@1138 | 3381 | storeEnd(t, token.endPos); |
ksrini@1138 | 3382 | return t; |
ksrini@1138 | 3383 | } |
ksrini@1138 | 3384 | |
ksrini@1138 | 3385 | protected <T extends JCTree> T toP(T t) { |
ksrini@1138 | 3386 | storeEnd(t, S.prevToken().endPos); |
ksrini@1138 | 3387 | return t; |
ksrini@1138 | 3388 | } |
ksrini@1138 | 3389 | |
ksrini@1138 | 3390 | public int getEndPos(JCTree tree) { |
ksrini@1138 | 3391 | Integer value = endPosMap.get(tree); |
ksrini@1138 | 3392 | return (value == null) ? Position.NOPOS : value; |
ksrini@1138 | 3393 | } |
ksrini@1138 | 3394 | |
ksrini@1138 | 3395 | public int replaceTree(JCTree oldTree, JCTree newTree) { |
ksrini@1138 | 3396 | Integer pos = endPosMap.remove(oldTree); |
ksrini@1138 | 3397 | if (pos != null) { |
ksrini@1138 | 3398 | endPosMap.put(newTree, pos); |
ksrini@1138 | 3399 | return pos; |
ksrini@1138 | 3400 | } |
ksrini@1138 | 3401 | return Position.NOPOS; |
ksrini@1138 | 3402 | } |
ksrini@1138 | 3403 | } |
ksrini@1138 | 3404 | |
ksrini@1138 | 3405 | /* |
ksrini@1138 | 3406 | * a default skeletal implementation without any mapping overhead. |
ksrini@1138 | 3407 | */ |
ksrini@1138 | 3408 | protected class EmptyEndPosTable extends AbstractEndPosTable { |
ksrini@1138 | 3409 | |
ksrini@1138 | 3410 | protected void storeEnd(JCTree tree, int endpos) { /* empty */ } |
ksrini@1138 | 3411 | |
ksrini@1138 | 3412 | protected <T extends JCTree> T to(T t) { |
ksrini@1138 | 3413 | return t; |
ksrini@1138 | 3414 | } |
ksrini@1138 | 3415 | |
ksrini@1138 | 3416 | protected <T extends JCTree> T toP(T t) { |
ksrini@1138 | 3417 | return t; |
ksrini@1138 | 3418 | } |
ksrini@1138 | 3419 | |
ksrini@1138 | 3420 | public int getEndPos(JCTree tree) { |
ksrini@1138 | 3421 | return Position.NOPOS; |
ksrini@1138 | 3422 | } |
ksrini@1138 | 3423 | |
ksrini@1138 | 3424 | public int replaceTree(JCTree oldTree, JCTree newTree) { |
ksrini@1138 | 3425 | return Position.NOPOS; |
ksrini@1138 | 3426 | } |
ksrini@1138 | 3427 | |
ksrini@1138 | 3428 | } |
ksrini@1138 | 3429 | |
ksrini@1138 | 3430 | protected abstract class AbstractEndPosTable implements EndPosTable { |
ksrini@1138 | 3431 | |
ksrini@1138 | 3432 | /** |
ksrini@1138 | 3433 | * Store the last error position. |
ksrini@1138 | 3434 | */ |
ksrini@1138 | 3435 | protected int errorEndPos; |
ksrini@1138 | 3436 | |
ksrini@1138 | 3437 | /** |
ksrini@1138 | 3438 | * Store ending position for a tree, the value of which is the greater |
ksrini@1138 | 3439 | * of last error position and the given ending position. |
ksrini@1138 | 3440 | * @param tree The tree. |
ksrini@1138 | 3441 | * @param endpos The ending position to associate with the tree. |
ksrini@1138 | 3442 | */ |
ksrini@1138 | 3443 | protected abstract void storeEnd(JCTree tree, int endpos); |
ksrini@1138 | 3444 | |
ksrini@1138 | 3445 | /** |
ksrini@1138 | 3446 | * Store current token's ending position for a tree, the value of which |
ksrini@1138 | 3447 | * will be the greater of last error position and the ending position of |
ksrini@1138 | 3448 | * the current token. |
ksrini@1138 | 3449 | * @param t The tree. |
ksrini@1138 | 3450 | */ |
ksrini@1138 | 3451 | protected abstract <T extends JCTree> T to(T t); |
ksrini@1138 | 3452 | |
ksrini@1138 | 3453 | /** |
ksrini@1138 | 3454 | * Store current token's ending position for a tree, the value of which |
ksrini@1138 | 3455 | * will be the greater of last error position and the ending position of |
ksrini@1138 | 3456 | * the previous token. |
ksrini@1138 | 3457 | * @param t The tree. |
ksrini@1138 | 3458 | */ |
ksrini@1138 | 3459 | protected abstract <T extends JCTree> T toP(T t); |
ksrini@1138 | 3460 | |
ksrini@1138 | 3461 | /** |
ksrini@1138 | 3462 | * Set the error position during the parsing phases, the value of which |
ksrini@1138 | 3463 | * will be set only if it is greater than the last stored error position. |
ksrini@1138 | 3464 | * @param errPos The error position |
ksrini@1138 | 3465 | */ |
ksrini@1138 | 3466 | protected void setErrorEndPos(int errPos) { |
ksrini@1138 | 3467 | if (errPos > errorEndPos) { |
ksrini@1138 | 3468 | errorEndPos = errPos; |
ksrini@1138 | 3469 | } |
ksrini@1138 | 3470 | } |
ksrini@1138 | 3471 | } |
duke@1 | 3472 | } |