1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/classes/com/sun/tools/javac/parser/JavacParser.java Wed Apr 27 01:34:52 2016 +0800
1.3 @@ -0,0 +1,4184 @@
1.4 +/*
1.5 + * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved.
1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
1.7 + *
1.8 + * This code is free software; you can redistribute it and/or modify it
1.9 + * under the terms of the GNU General Public License version 2 only, as
1.10 + * published by the Free Software Foundation. Oracle designates this
1.11 + * particular file as subject to the "Classpath" exception as provided
1.12 + * by Oracle in the LICENSE file that accompanied this code.
1.13 + *
1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT
1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
1.17 + * version 2 for more details (a copy is included in the LICENSE file that
1.18 + * accompanied this code).
1.19 + *
1.20 + * You should have received a copy of the GNU General Public License version
1.21 + * 2 along with this work; if not, write to the Free Software Foundation,
1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
1.23 + *
1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
1.25 + * or visit www.oracle.com if you need additional information or have any
1.26 + * questions.
1.27 + */
1.28 +
1.29 +package com.sun.tools.javac.parser;
1.30 +
1.31 +import java.util.*;
1.32 +
1.33 +import com.sun.source.tree.MemberReferenceTree.ReferenceMode;
1.34 +
1.35 +import com.sun.tools.javac.code.*;
1.36 +import com.sun.tools.javac.parser.Tokens.*;
1.37 +import com.sun.tools.javac.parser.Tokens.Comment.CommentStyle;
1.38 +import com.sun.tools.javac.tree.*;
1.39 +import com.sun.tools.javac.tree.JCTree.*;
1.40 +import com.sun.tools.javac.util.*;
1.41 +import com.sun.tools.javac.util.JCDiagnostic.DiagnosticFlag;
1.42 +import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
1.43 +import com.sun.tools.javac.util.List;
1.44 +
1.45 +import static com.sun.tools.javac.parser.Tokens.TokenKind.*;
1.46 +import static com.sun.tools.javac.parser.Tokens.TokenKind.ASSERT;
1.47 +import static com.sun.tools.javac.parser.Tokens.TokenKind.CASE;
1.48 +import static com.sun.tools.javac.parser.Tokens.TokenKind.CATCH;
1.49 +import static com.sun.tools.javac.parser.Tokens.TokenKind.EQ;
1.50 +import static com.sun.tools.javac.parser.Tokens.TokenKind.GT;
1.51 +import static com.sun.tools.javac.parser.Tokens.TokenKind.IMPORT;
1.52 +import static com.sun.tools.javac.parser.Tokens.TokenKind.LT;
1.53 +import static com.sun.tools.javac.tree.JCTree.Tag.*;
1.54 +
1.55 +/** The parser maps a token sequence into an abstract syntax
1.56 + * tree. It operates by recursive descent, with code derived
1.57 + * systematically from an LL(1) grammar. For efficiency reasons, an
1.58 + * operator precedence scheme is used for parsing binary operation
1.59 + * expressions.
1.60 + *
1.61 + * <p><b>This is NOT part of any supported API.
1.62 + * If you write code that depends on this, you do so at your own risk.
1.63 + * This code and its internal interfaces are subject to change or
1.64 + * deletion without notice.</b>
1.65 + */
1.66 +public class JavacParser implements Parser {
1.67 +
1.68 + /** The number of precedence levels of infix operators.
1.69 + */
1.70 + private static final int infixPrecedenceLevels = 10;
1.71 +
1.72 + /** The scanner used for lexical analysis.
1.73 + */
1.74 + protected Lexer S;
1.75 +
1.76 + /** The factory to be used for abstract syntax tree construction.
1.77 + */
1.78 + protected TreeMaker F;
1.79 +
1.80 + /** The log to be used for error diagnostics.
1.81 + */
1.82 + private Log log;
1.83 +
1.84 + /** The Source language setting. */
1.85 + private Source source;
1.86 +
1.87 + /** The name table. */
1.88 + private Names names;
1.89 +
1.90 + /** End position mappings container */
1.91 + private final AbstractEndPosTable endPosTable;
1.92 +
1.93 + // Because of javac's limited lookahead, some contexts are ambiguous in
1.94 + // the presence of type annotations even though they are not ambiguous
1.95 + // in the absence of type annotations. Consider this code:
1.96 + // void m(String [] m) { }
1.97 + // void m(String ... m) { }
1.98 + // After parsing "String", javac calls bracketsOpt which immediately
1.99 + // returns if the next character is not '['. Similarly, javac can see
1.100 + // if the next token is ... and in that case parse an ellipsis. But in
1.101 + // the presence of type annotations:
1.102 + // void m(String @A [] m) { }
1.103 + // void m(String @A ... m) { }
1.104 + // no finite lookahead is enough to determine whether to read array
1.105 + // levels or an ellipsis. Furthermore, if you call bracketsOpt, then
1.106 + // bracketsOpt first reads all the leading annotations and only then
1.107 + // discovers that it needs to fail. bracketsOpt needs a way to push
1.108 + // back the extra annotations that it read. (But, bracketsOpt should
1.109 + // not *always* be allowed to push back extra annotations that it finds
1.110 + // -- in most contexts, any such extra annotation is an error.
1.111 + //
1.112 + // The following two variables permit type annotations that have
1.113 + // already been read to be stored for later use. Alternate
1.114 + // implementations are possible but would cause much larger changes to
1.115 + // the parser.
1.116 +
1.117 + /** Type annotations that have already been read but have not yet been used. **/
1.118 + private List<JCAnnotation> typeAnnotationsPushedBack = List.nil();
1.119 +
1.120 + /**
1.121 + * If the parser notices extra annotations, then it either immediately
1.122 + * issues an error (if this variable is false) or places the extra
1.123 + * annotations in variable typeAnnotationsPushedBack (if this variable
1.124 + * is true).
1.125 + */
1.126 + private boolean permitTypeAnnotationsPushBack = false;
1.127 +
1.128 + interface ErrorRecoveryAction {
1.129 + JCTree doRecover(JavacParser parser);
1.130 + }
1.131 +
1.132 + enum BasicErrorRecoveryAction implements ErrorRecoveryAction {
1.133 + BLOCK_STMT {public JCTree doRecover(JavacParser parser) { return parser.parseStatementAsBlock(); }},
1.134 + CATCH_CLAUSE {public JCTree doRecover(JavacParser parser) { return parser.catchClause(); }}
1.135 + }
1.136 +
1.137 + /** Construct a parser from a given scanner, tree factory and log.
1.138 + */
1.139 + protected JavacParser(ParserFactory fac,
1.140 + Lexer S,
1.141 + boolean keepDocComments,
1.142 + boolean keepLineMap,
1.143 + boolean keepEndPositions) {
1.144 + this.S = S;
1.145 + nextToken(); // prime the pump
1.146 + this.F = fac.F;
1.147 + this.log = fac.log;
1.148 + this.names = fac.names;
1.149 + this.source = fac.source;
1.150 + this.allowGenerics = source.allowGenerics();
1.151 + this.allowVarargs = source.allowVarargs();
1.152 + this.allowAsserts = source.allowAsserts();
1.153 + this.allowEnums = source.allowEnums();
1.154 + this.allowForeach = source.allowForeach();
1.155 + this.allowStaticImport = source.allowStaticImport();
1.156 + this.allowAnnotations = source.allowAnnotations();
1.157 + this.allowTWR = source.allowTryWithResources();
1.158 + this.allowDiamond = source.allowDiamond();
1.159 + this.allowMulticatch = source.allowMulticatch();
1.160 + this.allowStringFolding = fac.options.getBoolean("allowStringFolding", true);
1.161 + this.allowLambda = source.allowLambda();
1.162 + this.allowMethodReferences = source.allowMethodReferences();
1.163 + this.allowDefaultMethods = source.allowDefaultMethods();
1.164 + this.allowStaticInterfaceMethods = source.allowStaticInterfaceMethods();
1.165 + this.allowIntersectionTypesInCast = source.allowIntersectionTypesInCast();
1.166 + this.allowTypeAnnotations = source.allowTypeAnnotations();
1.167 + this.allowAnnotationsAfterTypeParams = source.allowAnnotationsAfterTypeParams();
1.168 + this.keepDocComments = keepDocComments;
1.169 + docComments = newDocCommentTable(keepDocComments, fac);
1.170 + this.keepLineMap = keepLineMap;
1.171 + this.errorTree = F.Erroneous();
1.172 + endPosTable = newEndPosTable(keepEndPositions);
1.173 + }
1.174 +
1.175 + protected AbstractEndPosTable newEndPosTable(boolean keepEndPositions) {
1.176 + return keepEndPositions
1.177 + ? new SimpleEndPosTable(this)
1.178 + : new EmptyEndPosTable(this);
1.179 + }
1.180 +
1.181 + protected DocCommentTable newDocCommentTable(boolean keepDocComments, ParserFactory fac) {
1.182 + return keepDocComments ? new LazyDocCommentTable(fac) : null;
1.183 + }
1.184 +
1.185 + /** Switch: Should generics be recognized?
1.186 + */
1.187 + boolean allowGenerics;
1.188 +
1.189 + /** Switch: Should diamond operator be recognized?
1.190 + */
1.191 + boolean allowDiamond;
1.192 +
1.193 + /** Switch: Should multicatch clause be accepted?
1.194 + */
1.195 + boolean allowMulticatch;
1.196 +
1.197 + /** Switch: Should varargs be recognized?
1.198 + */
1.199 + boolean allowVarargs;
1.200 +
1.201 + /** Switch: should we recognize assert statements, or just give a warning?
1.202 + */
1.203 + boolean allowAsserts;
1.204 +
1.205 + /** Switch: should we recognize enums, or just give a warning?
1.206 + */
1.207 + boolean allowEnums;
1.208 +
1.209 + /** Switch: should we recognize foreach?
1.210 + */
1.211 + boolean allowForeach;
1.212 +
1.213 + /** Switch: should we recognize foreach?
1.214 + */
1.215 + boolean allowStaticImport;
1.216 +
1.217 + /** Switch: should we recognize annotations?
1.218 + */
1.219 + boolean allowAnnotations;
1.220 +
1.221 + /** Switch: should we recognize try-with-resources?
1.222 + */
1.223 + boolean allowTWR;
1.224 +
1.225 + /** Switch: should we fold strings?
1.226 + */
1.227 + boolean allowStringFolding;
1.228 +
1.229 + /** Switch: should we recognize lambda expressions?
1.230 + */
1.231 + boolean allowLambda;
1.232 +
1.233 + /** Switch: should we allow method/constructor references?
1.234 + */
1.235 + boolean allowMethodReferences;
1.236 +
1.237 + /** Switch: should we allow default methods in interfaces?
1.238 + */
1.239 + boolean allowDefaultMethods;
1.240 +
1.241 + /** Switch: should we allow static methods in interfaces?
1.242 + */
1.243 + boolean allowStaticInterfaceMethods;
1.244 +
1.245 + /** Switch: should we allow intersection types in cast?
1.246 + */
1.247 + boolean allowIntersectionTypesInCast;
1.248 +
1.249 + /** Switch: should we keep docComments?
1.250 + */
1.251 + boolean keepDocComments;
1.252 +
1.253 + /** Switch: should we keep line table?
1.254 + */
1.255 + boolean keepLineMap;
1.256 +
1.257 + /** Switch: should we recognize type annotations?
1.258 + */
1.259 + boolean allowTypeAnnotations;
1.260 +
1.261 + /** Switch: should we allow annotations after the method type parameters?
1.262 + */
1.263 + boolean allowAnnotationsAfterTypeParams;
1.264 +
1.265 + /** Switch: is "this" allowed as an identifier?
1.266 + * This is needed to parse receiver types.
1.267 + */
1.268 + boolean allowThisIdent;
1.269 +
1.270 + /** The type of the method receiver, as specified by a first "this" parameter.
1.271 + */
1.272 + JCVariableDecl receiverParam;
1.273 +
1.274 +
1.275 + /** When terms are parsed, the mode determines which is expected:
1.276 + * mode = EXPR : an expression
1.277 + * mode = TYPE : a type
1.278 + * mode = NOPARAMS : no parameters allowed for type
1.279 + * mode = TYPEARG : type argument
1.280 + */
1.281 + static final int EXPR = 0x1;
1.282 + static final int TYPE = 0x2;
1.283 + static final int NOPARAMS = 0x4;
1.284 + static final int TYPEARG = 0x8;
1.285 + static final int DIAMOND = 0x10;
1.286 +
1.287 + /** The current mode.
1.288 + */
1.289 + private int mode = 0;
1.290 +
1.291 + /** The mode of the term that was parsed last.
1.292 + */
1.293 + private int lastmode = 0;
1.294 +
1.295 + /* ---------- token management -------------- */
1.296 +
1.297 + protected Token token;
1.298 +
1.299 + public Token token() {
1.300 + return token;
1.301 + }
1.302 +
1.303 + public void nextToken() {
1.304 + S.nextToken();
1.305 + token = S.token();
1.306 + }
1.307 +
1.308 + protected boolean peekToken(Filter<TokenKind> tk) {
1.309 + return peekToken(0, tk);
1.310 + }
1.311 +
1.312 + protected boolean peekToken(int lookahead, Filter<TokenKind> tk) {
1.313 + return tk.accepts(S.token(lookahead + 1).kind);
1.314 + }
1.315 +
1.316 + protected boolean peekToken(Filter<TokenKind> tk1, Filter<TokenKind> tk2) {
1.317 + return peekToken(0, tk1, tk2);
1.318 + }
1.319 +
1.320 + protected boolean peekToken(int lookahead, Filter<TokenKind> tk1, Filter<TokenKind> tk2) {
1.321 + return tk1.accepts(S.token(lookahead + 1).kind) &&
1.322 + tk2.accepts(S.token(lookahead + 2).kind);
1.323 + }
1.324 +
1.325 + protected boolean peekToken(Filter<TokenKind> tk1, Filter<TokenKind> tk2, Filter<TokenKind> tk3) {
1.326 + return peekToken(0, tk1, tk2, tk3);
1.327 + }
1.328 +
1.329 + protected boolean peekToken(int lookahead, Filter<TokenKind> tk1, Filter<TokenKind> tk2, Filter<TokenKind> tk3) {
1.330 + return tk1.accepts(S.token(lookahead + 1).kind) &&
1.331 + tk2.accepts(S.token(lookahead + 2).kind) &&
1.332 + tk3.accepts(S.token(lookahead + 3).kind);
1.333 + }
1.334 +
1.335 + @SuppressWarnings("unchecked")
1.336 + protected boolean peekToken(Filter<TokenKind>... kinds) {
1.337 + return peekToken(0, kinds);
1.338 + }
1.339 +
1.340 + @SuppressWarnings("unchecked")
1.341 + protected boolean peekToken(int lookahead, Filter<TokenKind>... kinds) {
1.342 + for (; lookahead < kinds.length ; lookahead++) {
1.343 + if (!kinds[lookahead].accepts(S.token(lookahead + 1).kind)) {
1.344 + return false;
1.345 + }
1.346 + }
1.347 + return true;
1.348 + }
1.349 +
1.350 + /* ---------- error recovery -------------- */
1.351 +
1.352 + private JCErroneous errorTree;
1.353 +
1.354 + /** Skip forward until a suitable stop token is found.
1.355 + */
1.356 + private void skip(boolean stopAtImport, boolean stopAtMemberDecl, boolean stopAtIdentifier, boolean stopAtStatement) {
1.357 + while (true) {
1.358 + switch (token.kind) {
1.359 + case SEMI:
1.360 + nextToken();
1.361 + return;
1.362 + case PUBLIC:
1.363 + case FINAL:
1.364 + case ABSTRACT:
1.365 + case MONKEYS_AT:
1.366 + case EOF:
1.367 + case CLASS:
1.368 + case INTERFACE:
1.369 + case ENUM:
1.370 + return;
1.371 + case IMPORT:
1.372 + if (stopAtImport)
1.373 + return;
1.374 + break;
1.375 + case LBRACE:
1.376 + case RBRACE:
1.377 + case PRIVATE:
1.378 + case PROTECTED:
1.379 + case STATIC:
1.380 + case TRANSIENT:
1.381 + case NATIVE:
1.382 + case VOLATILE:
1.383 + case SYNCHRONIZED:
1.384 + case STRICTFP:
1.385 + case LT:
1.386 + case BYTE:
1.387 + case SHORT:
1.388 + case CHAR:
1.389 + case INT:
1.390 + case LONG:
1.391 + case FLOAT:
1.392 + case DOUBLE:
1.393 + case BOOLEAN:
1.394 + case VOID:
1.395 + if (stopAtMemberDecl)
1.396 + return;
1.397 + break;
1.398 + case UNDERSCORE:
1.399 + case IDENTIFIER:
1.400 + if (stopAtIdentifier)
1.401 + return;
1.402 + break;
1.403 + case CASE:
1.404 + case DEFAULT:
1.405 + case IF:
1.406 + case FOR:
1.407 + case WHILE:
1.408 + case DO:
1.409 + case TRY:
1.410 + case SWITCH:
1.411 + case RETURN:
1.412 + case THROW:
1.413 + case BREAK:
1.414 + case CONTINUE:
1.415 + case ELSE:
1.416 + case FINALLY:
1.417 + case CATCH:
1.418 + if (stopAtStatement)
1.419 + return;
1.420 + break;
1.421 + }
1.422 + nextToken();
1.423 + }
1.424 + }
1.425 +
1.426 + private JCErroneous syntaxError(int pos, String key, TokenKind... args) {
1.427 + return syntaxError(pos, List.<JCTree>nil(), key, args);
1.428 + }
1.429 +
1.430 + private JCErroneous syntaxError(int pos, List<JCTree> errs, String key, TokenKind... args) {
1.431 + setErrorEndPos(pos);
1.432 + JCErroneous err = F.at(pos).Erroneous(errs);
1.433 + reportSyntaxError(err, key, (Object[])args);
1.434 + if (errs != null) {
1.435 + JCTree last = errs.last();
1.436 + if (last != null)
1.437 + storeEnd(last, pos);
1.438 + }
1.439 + return toP(err);
1.440 + }
1.441 +
1.442 + private int errorPos = Position.NOPOS;
1.443 +
1.444 + /**
1.445 + * Report a syntax using the given the position parameter and arguments,
1.446 + * unless one was already reported at the same position.
1.447 + */
1.448 + private void reportSyntaxError(int pos, String key, Object... args) {
1.449 + JCDiagnostic.DiagnosticPosition diag = new JCDiagnostic.SimpleDiagnosticPosition(pos);
1.450 + reportSyntaxError(diag, key, args);
1.451 + }
1.452 +
1.453 + /**
1.454 + * Report a syntax error using the given DiagnosticPosition object and
1.455 + * arguments, unless one was already reported at the same position.
1.456 + */
1.457 + private void reportSyntaxError(JCDiagnostic.DiagnosticPosition diagPos, String key, Object... args) {
1.458 + int pos = diagPos.getPreferredPosition();
1.459 + if (pos > S.errPos() || pos == Position.NOPOS) {
1.460 + if (token.kind == EOF) {
1.461 + error(diagPos, "premature.eof");
1.462 + } else {
1.463 + error(diagPos, key, args);
1.464 + }
1.465 + }
1.466 + S.errPos(pos);
1.467 + if (token.pos == errorPos)
1.468 + nextToken(); // guarantee progress
1.469 + errorPos = token.pos;
1.470 + }
1.471 +
1.472 +
1.473 + /** Generate a syntax error at current position unless one was already
1.474 + * reported at the same position.
1.475 + */
1.476 + private JCErroneous syntaxError(String key) {
1.477 + return syntaxError(token.pos, key);
1.478 + }
1.479 +
1.480 + /** Generate a syntax error at current position unless one was
1.481 + * already reported at the same position.
1.482 + */
1.483 + private JCErroneous syntaxError(String key, TokenKind arg) {
1.484 + return syntaxError(token.pos, key, arg);
1.485 + }
1.486 +
1.487 + /** If next input token matches given token, skip it, otherwise report
1.488 + * an error.
1.489 + */
1.490 + public void accept(TokenKind tk) {
1.491 + if (token.kind == tk) {
1.492 + nextToken();
1.493 + } else {
1.494 + setErrorEndPos(token.pos);
1.495 + reportSyntaxError(S.prevToken().endPos, "expected", tk);
1.496 + }
1.497 + }
1.498 +
1.499 + /** Report an illegal start of expression/type error at given position.
1.500 + */
1.501 + JCExpression illegal(int pos) {
1.502 + setErrorEndPos(pos);
1.503 + if ((mode & EXPR) != 0)
1.504 + return syntaxError(pos, "illegal.start.of.expr");
1.505 + else
1.506 + return syntaxError(pos, "illegal.start.of.type");
1.507 +
1.508 + }
1.509 +
1.510 + /** Report an illegal start of expression/type error at current position.
1.511 + */
1.512 + JCExpression illegal() {
1.513 + return illegal(token.pos);
1.514 + }
1.515 +
1.516 + /** Diagnose a modifier flag from the set, if any. */
1.517 + void checkNoMods(long mods) {
1.518 + if (mods != 0) {
1.519 + long lowestMod = mods & -mods;
1.520 + error(token.pos, "mod.not.allowed.here",
1.521 + Flags.asFlagSet(lowestMod));
1.522 + }
1.523 + }
1.524 +
1.525 +/* ---------- doc comments --------- */
1.526 +
1.527 + /** A table to store all documentation comments
1.528 + * indexed by the tree nodes they refer to.
1.529 + * defined only if option flag keepDocComment is set.
1.530 + */
1.531 + private final DocCommentTable docComments;
1.532 +
1.533 + /** Make an entry into docComments hashtable,
1.534 + * provided flag keepDocComments is set and given doc comment is non-null.
1.535 + * @param tree The tree to be used as index in the hashtable
1.536 + * @param dc The doc comment to associate with the tree, or null.
1.537 + */
1.538 + void attach(JCTree tree, Comment dc) {
1.539 + if (keepDocComments && dc != null) {
1.540 +// System.out.println("doc comment = ");System.out.println(dc);//DEBUG
1.541 + docComments.putComment(tree, dc);
1.542 + }
1.543 + }
1.544 +
1.545 +/* -------- source positions ------- */
1.546 +
1.547 + private void setErrorEndPos(int errPos) {
1.548 + endPosTable.setErrorEndPos(errPos);
1.549 + }
1.550 +
1.551 + private void storeEnd(JCTree tree, int endpos) {
1.552 + endPosTable.storeEnd(tree, endpos);
1.553 + }
1.554 +
1.555 + private <T extends JCTree> T to(T t) {
1.556 + return endPosTable.to(t);
1.557 + }
1.558 +
1.559 + private <T extends JCTree> T toP(T t) {
1.560 + return endPosTable.toP(t);
1.561 + }
1.562 +
1.563 + /** Get the start position for a tree node. The start position is
1.564 + * defined to be the position of the first character of the first
1.565 + * token of the node's source text.
1.566 + * @param tree The tree node
1.567 + */
1.568 + public int getStartPos(JCTree tree) {
1.569 + return TreeInfo.getStartPos(tree);
1.570 + }
1.571 +
1.572 + /**
1.573 + * Get the end position for a tree node. The end position is
1.574 + * defined to be the position of the last character of the last
1.575 + * token of the node's source text. Returns Position.NOPOS if end
1.576 + * positions are not generated or the position is otherwise not
1.577 + * found.
1.578 + * @param tree The tree node
1.579 + */
1.580 + public int getEndPos(JCTree tree) {
1.581 + return endPosTable.getEndPos(tree);
1.582 + }
1.583 +
1.584 +
1.585 +
1.586 +/* ---------- parsing -------------- */
1.587 +
1.588 + /**
1.589 + * Ident = IDENTIFIER
1.590 + */
1.591 + Name ident() {
1.592 + if (token.kind == IDENTIFIER) {
1.593 + Name name = token.name();
1.594 + nextToken();
1.595 + return name;
1.596 + } else if (token.kind == ASSERT) {
1.597 + if (allowAsserts) {
1.598 + error(token.pos, "assert.as.identifier");
1.599 + nextToken();
1.600 + return names.error;
1.601 + } else {
1.602 + warning(token.pos, "assert.as.identifier");
1.603 + Name name = token.name();
1.604 + nextToken();
1.605 + return name;
1.606 + }
1.607 + } else if (token.kind == ENUM) {
1.608 + if (allowEnums) {
1.609 + error(token.pos, "enum.as.identifier");
1.610 + nextToken();
1.611 + return names.error;
1.612 + } else {
1.613 + warning(token.pos, "enum.as.identifier");
1.614 + Name name = token.name();
1.615 + nextToken();
1.616 + return name;
1.617 + }
1.618 + } else if (token.kind == THIS) {
1.619 + if (allowThisIdent) {
1.620 + // Make sure we're using a supported source version.
1.621 + checkTypeAnnotations();
1.622 + Name name = token.name();
1.623 + nextToken();
1.624 + return name;
1.625 + } else {
1.626 + error(token.pos, "this.as.identifier");
1.627 + nextToken();
1.628 + return names.error;
1.629 + }
1.630 + } else if (token.kind == UNDERSCORE) {
1.631 + warning(token.pos, "underscore.as.identifier");
1.632 + Name name = token.name();
1.633 + nextToken();
1.634 + return name;
1.635 + } else {
1.636 + accept(IDENTIFIER);
1.637 + return names.error;
1.638 + }
1.639 + }
1.640 +
1.641 + /**
1.642 + * Qualident = Ident { DOT [Annotations] Ident }
1.643 + */
1.644 + public JCExpression qualident(boolean allowAnnos) {
1.645 + JCExpression t = toP(F.at(token.pos).Ident(ident()));
1.646 + while (token.kind == DOT) {
1.647 + int pos = token.pos;
1.648 + nextToken();
1.649 + List<JCAnnotation> tyannos = null;
1.650 + if (allowAnnos) {
1.651 + tyannos = typeAnnotationsOpt();
1.652 + }
1.653 + t = toP(F.at(pos).Select(t, ident()));
1.654 + if (tyannos != null && tyannos.nonEmpty()) {
1.655 + t = toP(F.at(tyannos.head.pos).AnnotatedType(tyannos, t));
1.656 + }
1.657 + }
1.658 + return t;
1.659 + }
1.660 +
1.661 + JCExpression literal(Name prefix) {
1.662 + return literal(prefix, token.pos);
1.663 + }
1.664 +
1.665 + /**
1.666 + * Literal =
1.667 + * INTLITERAL
1.668 + * | LONGLITERAL
1.669 + * | FLOATLITERAL
1.670 + * | DOUBLELITERAL
1.671 + * | CHARLITERAL
1.672 + * | STRINGLITERAL
1.673 + * | TRUE
1.674 + * | FALSE
1.675 + * | NULL
1.676 + */
1.677 + JCExpression literal(Name prefix, int pos) {
1.678 + JCExpression t = errorTree;
1.679 + switch (token.kind) {
1.680 + case INTLITERAL:
1.681 + try {
1.682 + t = F.at(pos).Literal(
1.683 + TypeTag.INT,
1.684 + Convert.string2int(strval(prefix), token.radix()));
1.685 + } catch (NumberFormatException ex) {
1.686 + error(token.pos, "int.number.too.large", strval(prefix));
1.687 + }
1.688 + break;
1.689 + case LONGLITERAL:
1.690 + try {
1.691 + t = F.at(pos).Literal(
1.692 + TypeTag.LONG,
1.693 + new Long(Convert.string2long(strval(prefix), token.radix())));
1.694 + } catch (NumberFormatException ex) {
1.695 + error(token.pos, "int.number.too.large", strval(prefix));
1.696 + }
1.697 + break;
1.698 + case FLOATLITERAL: {
1.699 + String proper = token.radix() == 16 ?
1.700 + ("0x"+ token.stringVal()) :
1.701 + token.stringVal();
1.702 + Float n;
1.703 + try {
1.704 + n = Float.valueOf(proper);
1.705 + } catch (NumberFormatException ex) {
1.706 + // error already reported in scanner
1.707 + n = Float.NaN;
1.708 + }
1.709 + if (n.floatValue() == 0.0f && !isZero(proper))
1.710 + error(token.pos, "fp.number.too.small");
1.711 + else if (n.floatValue() == Float.POSITIVE_INFINITY)
1.712 + error(token.pos, "fp.number.too.large");
1.713 + else
1.714 + t = F.at(pos).Literal(TypeTag.FLOAT, n);
1.715 + break;
1.716 + }
1.717 + case DOUBLELITERAL: {
1.718 + String proper = token.radix() == 16 ?
1.719 + ("0x"+ token.stringVal()) :
1.720 + token.stringVal();
1.721 + Double n;
1.722 + try {
1.723 + n = Double.valueOf(proper);
1.724 + } catch (NumberFormatException ex) {
1.725 + // error already reported in scanner
1.726 + n = Double.NaN;
1.727 + }
1.728 + if (n.doubleValue() == 0.0d && !isZero(proper))
1.729 + error(token.pos, "fp.number.too.small");
1.730 + else if (n.doubleValue() == Double.POSITIVE_INFINITY)
1.731 + error(token.pos, "fp.number.too.large");
1.732 + else
1.733 + t = F.at(pos).Literal(TypeTag.DOUBLE, n);
1.734 + break;
1.735 + }
1.736 + case CHARLITERAL:
1.737 + t = F.at(pos).Literal(
1.738 + TypeTag.CHAR,
1.739 + token.stringVal().charAt(0) + 0);
1.740 + break;
1.741 + case STRINGLITERAL:
1.742 + t = F.at(pos).Literal(
1.743 + TypeTag.CLASS,
1.744 + token.stringVal());
1.745 + break;
1.746 + case TRUE: case FALSE:
1.747 + t = F.at(pos).Literal(
1.748 + TypeTag.BOOLEAN,
1.749 + (token.kind == TRUE ? 1 : 0));
1.750 + break;
1.751 + case NULL:
1.752 + t = F.at(pos).Literal(
1.753 + TypeTag.BOT,
1.754 + null);
1.755 + break;
1.756 + default:
1.757 + Assert.error();
1.758 + }
1.759 + if (t == errorTree)
1.760 + t = F.at(pos).Erroneous();
1.761 + storeEnd(t, token.endPos);
1.762 + nextToken();
1.763 + return t;
1.764 + }
1.765 + //where
1.766 + boolean isZero(String s) {
1.767 + char[] cs = s.toCharArray();
1.768 + int base = ((cs.length > 1 && Character.toLowerCase(cs[1]) == 'x') ? 16 : 10);
1.769 + int i = ((base==16) ? 2 : 0);
1.770 + while (i < cs.length && (cs[i] == '0' || cs[i] == '.')) i++;
1.771 + return !(i < cs.length && (Character.digit(cs[i], base) > 0));
1.772 + }
1.773 +
1.774 + String strval(Name prefix) {
1.775 + String s = token.stringVal();
1.776 + return prefix.isEmpty() ? s : prefix + s;
1.777 + }
1.778 +
1.779 + /** terms can be either expressions or types.
1.780 + */
1.781 + public JCExpression parseExpression() {
1.782 + return term(EXPR);
1.783 + }
1.784 +
1.785 + /**
1.786 + * parses (optional) type annotations followed by a type. If the
1.787 + * annotations are present before the type and are not consumed during array
1.788 + * parsing, this method returns a {@link JCAnnotatedType} consisting of
1.789 + * these annotations and the underlying type. Otherwise, it returns the
1.790 + * underlying type.
1.791 + *
1.792 + * <p>
1.793 + *
1.794 + * Note that this method sets {@code mode} to {@code TYPE} first, before
1.795 + * parsing annotations.
1.796 + */
1.797 + public JCExpression parseType() {
1.798 + List<JCAnnotation> annotations = typeAnnotationsOpt();
1.799 + return parseType(annotations);
1.800 + }
1.801 +
1.802 + public JCExpression parseType(List<JCAnnotation> annotations) {
1.803 + JCExpression result = unannotatedType();
1.804 +
1.805 + if (annotations.nonEmpty()) {
1.806 + result = insertAnnotationsToMostInner(result, annotations, false);
1.807 + }
1.808 +
1.809 + return result;
1.810 + }
1.811 +
1.812 + public JCExpression unannotatedType() {
1.813 + return term(TYPE);
1.814 + }
1.815 +
1.816 + JCExpression term(int newmode) {
1.817 + int prevmode = mode;
1.818 + mode = newmode;
1.819 + JCExpression t = term();
1.820 + lastmode = mode;
1.821 + mode = prevmode;
1.822 + return t;
1.823 + }
1.824 +
1.825 + /**
1.826 + * {@literal
1.827 + * Expression = Expression1 [ExpressionRest]
1.828 + * ExpressionRest = [AssignmentOperator Expression1]
1.829 + * AssignmentOperator = "=" | "+=" | "-=" | "*=" | "/=" |
1.830 + * "&=" | "|=" | "^=" |
1.831 + * "%=" | "<<=" | ">>=" | ">>>="
1.832 + * Type = Type1
1.833 + * TypeNoParams = TypeNoParams1
1.834 + * StatementExpression = Expression
1.835 + * ConstantExpression = Expression
1.836 + * }
1.837 + */
1.838 + JCExpression term() {
1.839 + JCExpression t = term1();
1.840 + if ((mode & EXPR) != 0 &&
1.841 + token.kind == EQ || PLUSEQ.compareTo(token.kind) <= 0 && token.kind.compareTo(GTGTGTEQ) <= 0)
1.842 + return termRest(t);
1.843 + else
1.844 + return t;
1.845 + }
1.846 +
1.847 + JCExpression termRest(JCExpression t) {
1.848 + switch (token.kind) {
1.849 + case EQ: {
1.850 + int pos = token.pos;
1.851 + nextToken();
1.852 + mode = EXPR;
1.853 + JCExpression t1 = term();
1.854 + return toP(F.at(pos).Assign(t, t1));
1.855 + }
1.856 + case PLUSEQ:
1.857 + case SUBEQ:
1.858 + case STAREQ:
1.859 + case SLASHEQ:
1.860 + case PERCENTEQ:
1.861 + case AMPEQ:
1.862 + case BAREQ:
1.863 + case CARETEQ:
1.864 + case LTLTEQ:
1.865 + case GTGTEQ:
1.866 + case GTGTGTEQ:
1.867 + int pos = token.pos;
1.868 + TokenKind tk = token.kind;
1.869 + nextToken();
1.870 + mode = EXPR;
1.871 + JCExpression t1 = term();
1.872 + return F.at(pos).Assignop(optag(tk), t, t1);
1.873 + default:
1.874 + return t;
1.875 + }
1.876 + }
1.877 +
1.878 + /** Expression1 = Expression2 [Expression1Rest]
1.879 + * Type1 = Type2
1.880 + * TypeNoParams1 = TypeNoParams2
1.881 + */
1.882 + JCExpression term1() {
1.883 + JCExpression t = term2();
1.884 + if ((mode & EXPR) != 0 && token.kind == QUES) {
1.885 + mode = EXPR;
1.886 + return term1Rest(t);
1.887 + } else {
1.888 + return t;
1.889 + }
1.890 + }
1.891 +
1.892 + /** Expression1Rest = ["?" Expression ":" Expression1]
1.893 + */
1.894 + JCExpression term1Rest(JCExpression t) {
1.895 + if (token.kind == QUES) {
1.896 + int pos = token.pos;
1.897 + nextToken();
1.898 + JCExpression t1 = term();
1.899 + accept(COLON);
1.900 + JCExpression t2 = term1();
1.901 + return F.at(pos).Conditional(t, t1, t2);
1.902 + } else {
1.903 + return t;
1.904 + }
1.905 + }
1.906 +
1.907 + /** Expression2 = Expression3 [Expression2Rest]
1.908 + * Type2 = Type3
1.909 + * TypeNoParams2 = TypeNoParams3
1.910 + */
1.911 + JCExpression term2() {
1.912 + JCExpression t = term3();
1.913 + if ((mode & EXPR) != 0 && prec(token.kind) >= TreeInfo.orPrec) {
1.914 + mode = EXPR;
1.915 + return term2Rest(t, TreeInfo.orPrec);
1.916 + } else {
1.917 + return t;
1.918 + }
1.919 + }
1.920 +
1.921 + /* Expression2Rest = {infixop Expression3}
1.922 + * | Expression3 instanceof Type
1.923 + * infixop = "||"
1.924 + * | "&&"
1.925 + * | "|"
1.926 + * | "^"
1.927 + * | "&"
1.928 + * | "==" | "!="
1.929 + * | "<" | ">" | "<=" | ">="
1.930 + * | "<<" | ">>" | ">>>"
1.931 + * | "+" | "-"
1.932 + * | "*" | "/" | "%"
1.933 + */
1.934 + JCExpression term2Rest(JCExpression t, int minprec) {
1.935 + JCExpression[] odStack = newOdStack();
1.936 + Token[] opStack = newOpStack();
1.937 +
1.938 + // optimization, was odStack = new Tree[...]; opStack = new Tree[...];
1.939 + int top = 0;
1.940 + odStack[0] = t;
1.941 + int startPos = token.pos;
1.942 + Token topOp = Tokens.DUMMY;
1.943 + while (prec(token.kind) >= minprec) {
1.944 + opStack[top] = topOp;
1.945 + top++;
1.946 + topOp = token;
1.947 + nextToken();
1.948 + odStack[top] = (topOp.kind == INSTANCEOF) ? parseType() : term3();
1.949 + while (top > 0 && prec(topOp.kind) >= prec(token.kind)) {
1.950 + odStack[top-1] = makeOp(topOp.pos, topOp.kind, odStack[top-1],
1.951 + odStack[top]);
1.952 + top--;
1.953 + topOp = opStack[top];
1.954 + }
1.955 + }
1.956 + Assert.check(top == 0);
1.957 + t = odStack[0];
1.958 +
1.959 + if (t.hasTag(JCTree.Tag.PLUS)) {
1.960 + StringBuilder buf = foldStrings(t);
1.961 + if (buf != null) {
1.962 + t = toP(F.at(startPos).Literal(TypeTag.CLASS, buf.toString()));
1.963 + }
1.964 + }
1.965 +
1.966 + odStackSupply.add(odStack);
1.967 + opStackSupply.add(opStack);
1.968 + return t;
1.969 + }
1.970 + //where
1.971 + /** Construct a binary or type test node.
1.972 + */
1.973 + private JCExpression makeOp(int pos,
1.974 + TokenKind topOp,
1.975 + JCExpression od1,
1.976 + JCExpression od2)
1.977 + {
1.978 + if (topOp == INSTANCEOF) {
1.979 + return F.at(pos).TypeTest(od1, od2);
1.980 + } else {
1.981 + return F.at(pos).Binary(optag(topOp), od1, od2);
1.982 + }
1.983 + }
1.984 + /** If tree is a concatenation of string literals, replace it
1.985 + * by a single literal representing the concatenated string.
1.986 + */
1.987 + protected StringBuilder foldStrings(JCTree tree) {
1.988 + if (!allowStringFolding)
1.989 + return null;
1.990 + List<String> buf = List.nil();
1.991 + while (true) {
1.992 + if (tree.hasTag(LITERAL)) {
1.993 + JCLiteral lit = (JCLiteral) tree;
1.994 + if (lit.typetag == TypeTag.CLASS) {
1.995 + StringBuilder sbuf =
1.996 + new StringBuilder((String)lit.value);
1.997 + while (buf.nonEmpty()) {
1.998 + sbuf.append(buf.head);
1.999 + buf = buf.tail;
1.1000 + }
1.1001 + return sbuf;
1.1002 + }
1.1003 + } else if (tree.hasTag(JCTree.Tag.PLUS)) {
1.1004 + JCBinary op = (JCBinary)tree;
1.1005 + if (op.rhs.hasTag(LITERAL)) {
1.1006 + JCLiteral lit = (JCLiteral) op.rhs;
1.1007 + if (lit.typetag == TypeTag.CLASS) {
1.1008 + buf = buf.prepend((String) lit.value);
1.1009 + tree = op.lhs;
1.1010 + continue;
1.1011 + }
1.1012 + }
1.1013 + }
1.1014 + return null;
1.1015 + }
1.1016 + }
1.1017 +
1.1018 + /** optimization: To save allocating a new operand/operator stack
1.1019 + * for every binary operation, we use supplys.
1.1020 + */
1.1021 + ArrayList<JCExpression[]> odStackSupply = new ArrayList<JCExpression[]>();
1.1022 + ArrayList<Token[]> opStackSupply = new ArrayList<Token[]>();
1.1023 +
1.1024 + private JCExpression[] newOdStack() {
1.1025 + if (odStackSupply.isEmpty())
1.1026 + return new JCExpression[infixPrecedenceLevels + 1];
1.1027 + return odStackSupply.remove(odStackSupply.size() - 1);
1.1028 + }
1.1029 +
1.1030 + private Token[] newOpStack() {
1.1031 + if (opStackSupply.isEmpty())
1.1032 + return new Token[infixPrecedenceLevels + 1];
1.1033 + return opStackSupply.remove(opStackSupply.size() - 1);
1.1034 + }
1.1035 +
1.1036 + /**
1.1037 + * Expression3 = PrefixOp Expression3
1.1038 + * | "(" Expr | TypeNoParams ")" Expression3
1.1039 + * | Primary {Selector} {PostfixOp}
1.1040 + *
1.1041 + * {@literal
1.1042 + * Primary = "(" Expression ")"
1.1043 + * | Literal
1.1044 + * | [TypeArguments] THIS [Arguments]
1.1045 + * | [TypeArguments] SUPER SuperSuffix
1.1046 + * | NEW [TypeArguments] Creator
1.1047 + * | "(" Arguments ")" "->" ( Expression | Block )
1.1048 + * | Ident "->" ( Expression | Block )
1.1049 + * | [Annotations] Ident { "." [Annotations] Ident }
1.1050 + * | Expression3 MemberReferenceSuffix
1.1051 + * [ [Annotations] "[" ( "]" BracketsOpt "." CLASS | Expression "]" )
1.1052 + * | Arguments
1.1053 + * | "." ( CLASS | THIS | [TypeArguments] SUPER Arguments | NEW [TypeArguments] InnerCreator )
1.1054 + * ]
1.1055 + * | BasicType BracketsOpt "." CLASS
1.1056 + * }
1.1057 + *
1.1058 + * PrefixOp = "++" | "--" | "!" | "~" | "+" | "-"
1.1059 + * PostfixOp = "++" | "--"
1.1060 + * Type3 = Ident { "." Ident } [TypeArguments] {TypeSelector} BracketsOpt
1.1061 + * | BasicType
1.1062 + * TypeNoParams3 = Ident { "." Ident } BracketsOpt
1.1063 + * Selector = "." [TypeArguments] Ident [Arguments]
1.1064 + * | "." THIS
1.1065 + * | "." [TypeArguments] SUPER SuperSuffix
1.1066 + * | "." NEW [TypeArguments] InnerCreator
1.1067 + * | "[" Expression "]"
1.1068 + * TypeSelector = "." Ident [TypeArguments]
1.1069 + * SuperSuffix = Arguments | "." Ident [Arguments]
1.1070 + */
1.1071 + protected JCExpression term3() {
1.1072 + int pos = token.pos;
1.1073 + JCExpression t;
1.1074 + List<JCExpression> typeArgs = typeArgumentsOpt(EXPR);
1.1075 + switch (token.kind) {
1.1076 + case QUES:
1.1077 + if ((mode & TYPE) != 0 && (mode & (TYPEARG|NOPARAMS)) == TYPEARG) {
1.1078 + mode = TYPE;
1.1079 + return typeArgument();
1.1080 + } else
1.1081 + return illegal();
1.1082 + case PLUSPLUS: case SUBSUB: case BANG: case TILDE: case PLUS: case SUB:
1.1083 + if (typeArgs == null && (mode & EXPR) != 0) {
1.1084 + TokenKind tk = token.kind;
1.1085 + nextToken();
1.1086 + mode = EXPR;
1.1087 + if (tk == SUB &&
1.1088 + (token.kind == INTLITERAL || token.kind == LONGLITERAL) &&
1.1089 + token.radix() == 10) {
1.1090 + mode = EXPR;
1.1091 + t = literal(names.hyphen, pos);
1.1092 + } else {
1.1093 + t = term3();
1.1094 + return F.at(pos).Unary(unoptag(tk), t);
1.1095 + }
1.1096 + } else return illegal();
1.1097 + break;
1.1098 + case LPAREN:
1.1099 + if (typeArgs == null && (mode & EXPR) != 0) {
1.1100 + ParensResult pres = analyzeParens();
1.1101 + switch (pres) {
1.1102 + case CAST:
1.1103 + accept(LPAREN);
1.1104 + mode = TYPE;
1.1105 + int pos1 = pos;
1.1106 + List<JCExpression> targets = List.of(t = term3());
1.1107 + while (token.kind == AMP) {
1.1108 + checkIntersectionTypesInCast();
1.1109 + accept(AMP);
1.1110 + targets = targets.prepend(term3());
1.1111 + }
1.1112 + if (targets.length() > 1) {
1.1113 + t = toP(F.at(pos1).TypeIntersection(targets.reverse()));
1.1114 + }
1.1115 + accept(RPAREN);
1.1116 + mode = EXPR;
1.1117 + JCExpression t1 = term3();
1.1118 + return F.at(pos).TypeCast(t, t1);
1.1119 + case IMPLICIT_LAMBDA:
1.1120 + case EXPLICIT_LAMBDA:
1.1121 + t = lambdaExpressionOrStatement(true, pres == ParensResult.EXPLICIT_LAMBDA, pos);
1.1122 + break;
1.1123 + default: //PARENS
1.1124 + accept(LPAREN);
1.1125 + mode = EXPR;
1.1126 + t = termRest(term1Rest(term2Rest(term3(), TreeInfo.orPrec)));
1.1127 + accept(RPAREN);
1.1128 + t = toP(F.at(pos).Parens(t));
1.1129 + break;
1.1130 + }
1.1131 + } else {
1.1132 + return illegal();
1.1133 + }
1.1134 + break;
1.1135 + case THIS:
1.1136 + if ((mode & EXPR) != 0) {
1.1137 + mode = EXPR;
1.1138 + t = to(F.at(pos).Ident(names._this));
1.1139 + nextToken();
1.1140 + if (typeArgs == null)
1.1141 + t = argumentsOpt(null, t);
1.1142 + else
1.1143 + t = arguments(typeArgs, t);
1.1144 + typeArgs = null;
1.1145 + } else return illegal();
1.1146 + break;
1.1147 + case SUPER:
1.1148 + if ((mode & EXPR) != 0) {
1.1149 + mode = EXPR;
1.1150 + t = to(F.at(pos).Ident(names._super));
1.1151 + t = superSuffix(typeArgs, t);
1.1152 + typeArgs = null;
1.1153 + } else return illegal();
1.1154 + break;
1.1155 + case INTLITERAL: case LONGLITERAL: case FLOATLITERAL: case DOUBLELITERAL:
1.1156 + case CHARLITERAL: case STRINGLITERAL:
1.1157 + case TRUE: case FALSE: case NULL:
1.1158 + if (typeArgs == null && (mode & EXPR) != 0) {
1.1159 + mode = EXPR;
1.1160 + t = literal(names.empty);
1.1161 + } else return illegal();
1.1162 + break;
1.1163 + case NEW:
1.1164 + if (typeArgs != null) return illegal();
1.1165 + if ((mode & EXPR) != 0) {
1.1166 + mode = EXPR;
1.1167 + nextToken();
1.1168 + if (token.kind == LT) typeArgs = typeArguments(false);
1.1169 + t = creator(pos, typeArgs);
1.1170 + typeArgs = null;
1.1171 + } else return illegal();
1.1172 + break;
1.1173 + case MONKEYS_AT:
1.1174 + // Only annotated cast types and method references are valid
1.1175 + List<JCAnnotation> typeAnnos = typeAnnotationsOpt();
1.1176 + if (typeAnnos.isEmpty()) {
1.1177 + // else there would be no '@'
1.1178 + throw new AssertionError("Expected type annotations, but found none!");
1.1179 + }
1.1180 +
1.1181 + JCExpression expr = term3();
1.1182 +
1.1183 + if ((mode & TYPE) == 0) {
1.1184 + // Type annotations on class literals no longer legal
1.1185 + switch (expr.getTag()) {
1.1186 + case REFERENCE: {
1.1187 + JCMemberReference mref = (JCMemberReference) expr;
1.1188 + mref.expr = toP(F.at(pos).AnnotatedType(typeAnnos, mref.expr));
1.1189 + t = mref;
1.1190 + break;
1.1191 + }
1.1192 + case SELECT: {
1.1193 + JCFieldAccess sel = (JCFieldAccess) expr;
1.1194 +
1.1195 + if (sel.name != names._class) {
1.1196 + return illegal();
1.1197 + } else {
1.1198 + log.error(token.pos, "no.annotations.on.dot.class");
1.1199 + return expr;
1.1200 + }
1.1201 + }
1.1202 + default:
1.1203 + return illegal(typeAnnos.head.pos);
1.1204 + }
1.1205 +
1.1206 + } else {
1.1207 + // Type annotations targeting a cast
1.1208 + t = insertAnnotationsToMostInner(expr, typeAnnos, false);
1.1209 + }
1.1210 + break;
1.1211 + case UNDERSCORE: case IDENTIFIER: case ASSERT: case ENUM:
1.1212 + if (typeArgs != null) return illegal();
1.1213 + if ((mode & EXPR) != 0 && peekToken(ARROW)) {
1.1214 + t = lambdaExpressionOrStatement(false, false, pos);
1.1215 + } else {
1.1216 + t = toP(F.at(token.pos).Ident(ident()));
1.1217 + loop: while (true) {
1.1218 + pos = token.pos;
1.1219 + final List<JCAnnotation> annos = typeAnnotationsOpt();
1.1220 +
1.1221 + // need to report an error later if LBRACKET is for array
1.1222 + // index access rather than array creation level
1.1223 + if (!annos.isEmpty() && token.kind != LBRACKET && token.kind != ELLIPSIS)
1.1224 + return illegal(annos.head.pos);
1.1225 +
1.1226 + switch (token.kind) {
1.1227 + case LBRACKET:
1.1228 + nextToken();
1.1229 + if (token.kind == RBRACKET) {
1.1230 + nextToken();
1.1231 + t = bracketsOpt(t);
1.1232 + t = toP(F.at(pos).TypeArray(t));
1.1233 + if (annos.nonEmpty()) {
1.1234 + t = toP(F.at(pos).AnnotatedType(annos, t));
1.1235 + }
1.1236 + // .class is only allowed if there were no annotations
1.1237 + JCExpression nt = bracketsSuffix(t);
1.1238 + if (nt != t && (annos.nonEmpty() || TreeInfo.containsTypeAnnotation(t))) {
1.1239 + // t and nt are different if bracketsSuffix parsed a .class.
1.1240 + // The check for nonEmpty covers the case when the whole array is annotated.
1.1241 + // Helper method isAnnotated looks for annos deeply within t.
1.1242 + syntaxError("no.annotations.on.dot.class");
1.1243 + }
1.1244 + t = nt;
1.1245 + } else {
1.1246 + if ((mode & EXPR) != 0) {
1.1247 + mode = EXPR;
1.1248 + JCExpression t1 = term();
1.1249 + if (!annos.isEmpty()) t = illegal(annos.head.pos);
1.1250 + t = to(F.at(pos).Indexed(t, t1));
1.1251 + }
1.1252 + accept(RBRACKET);
1.1253 + }
1.1254 + break loop;
1.1255 + case LPAREN:
1.1256 + if ((mode & EXPR) != 0) {
1.1257 + mode = EXPR;
1.1258 + t = arguments(typeArgs, t);
1.1259 + if (!annos.isEmpty()) t = illegal(annos.head.pos);
1.1260 + typeArgs = null;
1.1261 + }
1.1262 + break loop;
1.1263 + case DOT:
1.1264 + nextToken();
1.1265 + int oldmode = mode;
1.1266 + mode &= ~NOPARAMS;
1.1267 + typeArgs = typeArgumentsOpt(EXPR);
1.1268 + mode = oldmode;
1.1269 + if ((mode & EXPR) != 0) {
1.1270 + switch (token.kind) {
1.1271 + case CLASS:
1.1272 + if (typeArgs != null) return illegal();
1.1273 + mode = EXPR;
1.1274 + t = to(F.at(pos).Select(t, names._class));
1.1275 + nextToken();
1.1276 + break loop;
1.1277 + case THIS:
1.1278 + if (typeArgs != null) return illegal();
1.1279 + mode = EXPR;
1.1280 + t = to(F.at(pos).Select(t, names._this));
1.1281 + nextToken();
1.1282 + break loop;
1.1283 + case SUPER:
1.1284 + mode = EXPR;
1.1285 + t = to(F.at(pos).Select(t, names._super));
1.1286 + t = superSuffix(typeArgs, t);
1.1287 + typeArgs = null;
1.1288 + break loop;
1.1289 + case NEW:
1.1290 + if (typeArgs != null) return illegal();
1.1291 + mode = EXPR;
1.1292 + int pos1 = token.pos;
1.1293 + nextToken();
1.1294 + if (token.kind == LT) typeArgs = typeArguments(false);
1.1295 + t = innerCreator(pos1, typeArgs, t);
1.1296 + typeArgs = null;
1.1297 + break loop;
1.1298 + }
1.1299 + }
1.1300 +
1.1301 + List<JCAnnotation> tyannos = null;
1.1302 + if ((mode & TYPE) != 0 && token.kind == MONKEYS_AT) {
1.1303 + tyannos = typeAnnotationsOpt();
1.1304 + }
1.1305 + // typeArgs saved for next loop iteration.
1.1306 + t = toP(F.at(pos).Select(t, ident()));
1.1307 + if (tyannos != null && tyannos.nonEmpty()) {
1.1308 + t = toP(F.at(tyannos.head.pos).AnnotatedType(tyannos, t));
1.1309 + }
1.1310 + break;
1.1311 + case ELLIPSIS:
1.1312 + if (this.permitTypeAnnotationsPushBack) {
1.1313 + this.typeAnnotationsPushedBack = annos;
1.1314 + } else if (annos.nonEmpty()) {
1.1315 + // Don't return here -- error recovery attempt
1.1316 + illegal(annos.head.pos);
1.1317 + }
1.1318 + break loop;
1.1319 + case LT:
1.1320 + if ((mode & TYPE) == 0 && isUnboundMemberRef()) {
1.1321 + //this is an unbound method reference whose qualifier
1.1322 + //is a generic type i.e. A<S>::m
1.1323 + int pos1 = token.pos;
1.1324 + accept(LT);
1.1325 + ListBuffer<JCExpression> args = new ListBuffer<JCExpression>();
1.1326 + args.append(typeArgument());
1.1327 + while (token.kind == COMMA) {
1.1328 + nextToken();
1.1329 + args.append(typeArgument());
1.1330 + }
1.1331 + accept(GT);
1.1332 + t = toP(F.at(pos1).TypeApply(t, args.toList()));
1.1333 + checkGenerics();
1.1334 + while (token.kind == DOT) {
1.1335 + nextToken();
1.1336 + mode = TYPE;
1.1337 + t = toP(F.at(token.pos).Select(t, ident()));
1.1338 + t = typeArgumentsOpt(t);
1.1339 + }
1.1340 + t = bracketsOpt(t);
1.1341 + if (token.kind != COLCOL) {
1.1342 + //method reference expected here
1.1343 + t = illegal();
1.1344 + }
1.1345 + mode = EXPR;
1.1346 + return term3Rest(t, typeArgs);
1.1347 + }
1.1348 + break loop;
1.1349 + default:
1.1350 + break loop;
1.1351 + }
1.1352 + }
1.1353 + }
1.1354 + if (typeArgs != null) illegal();
1.1355 + t = typeArgumentsOpt(t);
1.1356 + break;
1.1357 + case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT:
1.1358 + case DOUBLE: case BOOLEAN:
1.1359 + if (typeArgs != null) illegal();
1.1360 + t = bracketsSuffix(bracketsOpt(basicType()));
1.1361 + break;
1.1362 + case VOID:
1.1363 + if (typeArgs != null) illegal();
1.1364 + if ((mode & EXPR) != 0) {
1.1365 + nextToken();
1.1366 + if (token.kind == DOT) {
1.1367 + JCPrimitiveTypeTree ti = toP(F.at(pos).TypeIdent(TypeTag.VOID));
1.1368 + t = bracketsSuffix(ti);
1.1369 + } else {
1.1370 + return illegal(pos);
1.1371 + }
1.1372 + } else {
1.1373 + // Support the corner case of myMethodHandle.<void>invoke() by passing
1.1374 + // a void type (like other primitive types) to the next phase.
1.1375 + // The error will be reported in Attr.attribTypes or Attr.visitApply.
1.1376 + JCPrimitiveTypeTree ti = to(F.at(pos).TypeIdent(TypeTag.VOID));
1.1377 + nextToken();
1.1378 + return ti;
1.1379 + //return illegal();
1.1380 + }
1.1381 + break;
1.1382 + default:
1.1383 + return illegal();
1.1384 + }
1.1385 + return term3Rest(t, typeArgs);
1.1386 + }
1.1387 +
1.1388 + JCExpression term3Rest(JCExpression t, List<JCExpression> typeArgs) {
1.1389 + if (typeArgs != null) illegal();
1.1390 + while (true) {
1.1391 + int pos1 = token.pos;
1.1392 + final List<JCAnnotation> annos = typeAnnotationsOpt();
1.1393 +
1.1394 + if (token.kind == LBRACKET) {
1.1395 + nextToken();
1.1396 + if ((mode & TYPE) != 0) {
1.1397 + int oldmode = mode;
1.1398 + mode = TYPE;
1.1399 + if (token.kind == RBRACKET) {
1.1400 + nextToken();
1.1401 + t = bracketsOpt(t);
1.1402 + t = toP(F.at(pos1).TypeArray(t));
1.1403 + if (token.kind == COLCOL) {
1.1404 + mode = EXPR;
1.1405 + continue;
1.1406 + }
1.1407 + if (annos.nonEmpty()) {
1.1408 + t = toP(F.at(pos1).AnnotatedType(annos, t));
1.1409 + }
1.1410 + return t;
1.1411 + }
1.1412 + mode = oldmode;
1.1413 + }
1.1414 + if ((mode & EXPR) != 0) {
1.1415 + mode = EXPR;
1.1416 + JCExpression t1 = term();
1.1417 + t = to(F.at(pos1).Indexed(t, t1));
1.1418 + }
1.1419 + accept(RBRACKET);
1.1420 + } else if (token.kind == DOT) {
1.1421 + nextToken();
1.1422 + typeArgs = typeArgumentsOpt(EXPR);
1.1423 + if (token.kind == SUPER && (mode & EXPR) != 0) {
1.1424 + mode = EXPR;
1.1425 + t = to(F.at(pos1).Select(t, names._super));
1.1426 + nextToken();
1.1427 + t = arguments(typeArgs, t);
1.1428 + typeArgs = null;
1.1429 + } else if (token.kind == NEW && (mode & EXPR) != 0) {
1.1430 + if (typeArgs != null) return illegal();
1.1431 + mode = EXPR;
1.1432 + int pos2 = token.pos;
1.1433 + nextToken();
1.1434 + if (token.kind == LT) typeArgs = typeArguments(false);
1.1435 + t = innerCreator(pos2, typeArgs, t);
1.1436 + typeArgs = null;
1.1437 + } else {
1.1438 + List<JCAnnotation> tyannos = null;
1.1439 + if ((mode & TYPE) != 0 && token.kind == MONKEYS_AT) {
1.1440 + // is the mode check needed?
1.1441 + tyannos = typeAnnotationsOpt();
1.1442 + }
1.1443 + t = toP(F.at(pos1).Select(t, ident()));
1.1444 + if (tyannos != null && tyannos.nonEmpty()) {
1.1445 + t = toP(F.at(tyannos.head.pos).AnnotatedType(tyannos, t));
1.1446 + }
1.1447 + t = argumentsOpt(typeArgs, typeArgumentsOpt(t));
1.1448 + typeArgs = null;
1.1449 + }
1.1450 + } else if ((mode & EXPR) != 0 && token.kind == COLCOL) {
1.1451 + mode = EXPR;
1.1452 + if (typeArgs != null) return illegal();
1.1453 + accept(COLCOL);
1.1454 + t = memberReferenceSuffix(pos1, t);
1.1455 + } else {
1.1456 + if (!annos.isEmpty()) {
1.1457 + if (permitTypeAnnotationsPushBack)
1.1458 + typeAnnotationsPushedBack = annos;
1.1459 + else
1.1460 + return illegal(annos.head.pos);
1.1461 + }
1.1462 + break;
1.1463 + }
1.1464 + }
1.1465 + while ((token.kind == PLUSPLUS || token.kind == SUBSUB) && (mode & EXPR) != 0) {
1.1466 + mode = EXPR;
1.1467 + t = to(F.at(token.pos).Unary(
1.1468 + token.kind == PLUSPLUS ? POSTINC : POSTDEC, t));
1.1469 + nextToken();
1.1470 + }
1.1471 + return toP(t);
1.1472 + }
1.1473 +
1.1474 + /**
1.1475 + * If we see an identifier followed by a '<' it could be an unbound
1.1476 + * method reference or a binary expression. To disambiguate, look for a
1.1477 + * matching '>' and see if the subsequent terminal is either '.' or '::'.
1.1478 + */
1.1479 + @SuppressWarnings("fallthrough")
1.1480 + boolean isUnboundMemberRef() {
1.1481 + int pos = 0, depth = 0;
1.1482 + outer: for (Token t = S.token(pos) ; ; t = S.token(++pos)) {
1.1483 + switch (t.kind) {
1.1484 + case IDENTIFIER: case UNDERSCORE: case QUES: case EXTENDS: case SUPER:
1.1485 + case DOT: case RBRACKET: case LBRACKET: case COMMA:
1.1486 + case BYTE: case SHORT: case INT: case LONG: case FLOAT:
1.1487 + case DOUBLE: case BOOLEAN: case CHAR:
1.1488 + case MONKEYS_AT:
1.1489 + break;
1.1490 +
1.1491 + case LPAREN:
1.1492 + // skip annotation values
1.1493 + int nesting = 0;
1.1494 + for (; ; pos++) {
1.1495 + TokenKind tk2 = S.token(pos).kind;
1.1496 + switch (tk2) {
1.1497 + case EOF:
1.1498 + return false;
1.1499 + case LPAREN:
1.1500 + nesting++;
1.1501 + break;
1.1502 + case RPAREN:
1.1503 + nesting--;
1.1504 + if (nesting == 0) {
1.1505 + continue outer;
1.1506 + }
1.1507 + break;
1.1508 + }
1.1509 + }
1.1510 +
1.1511 + case LT:
1.1512 + depth++; break;
1.1513 + case GTGTGT:
1.1514 + depth--;
1.1515 + case GTGT:
1.1516 + depth--;
1.1517 + case GT:
1.1518 + depth--;
1.1519 + if (depth == 0) {
1.1520 + TokenKind nextKind = S.token(pos + 1).kind;
1.1521 + return
1.1522 + nextKind == TokenKind.DOT ||
1.1523 + nextKind == TokenKind.LBRACKET ||
1.1524 + nextKind == TokenKind.COLCOL;
1.1525 + }
1.1526 + break;
1.1527 + default:
1.1528 + return false;
1.1529 + }
1.1530 + }
1.1531 + }
1.1532 +
1.1533 + /**
1.1534 + * If we see an identifier followed by a '<' it could be an unbound
1.1535 + * method reference or a binary expression. To disambiguate, look for a
1.1536 + * matching '>' and see if the subsequent terminal is either '.' or '::'.
1.1537 + */
1.1538 + @SuppressWarnings("fallthrough")
1.1539 + ParensResult analyzeParens() {
1.1540 + int depth = 0;
1.1541 + boolean type = false;
1.1542 + outer: for (int lookahead = 0 ; ; lookahead++) {
1.1543 + TokenKind tk = S.token(lookahead).kind;
1.1544 + switch (tk) {
1.1545 + case COMMA:
1.1546 + type = true;
1.1547 + case EXTENDS: case SUPER: case DOT: case AMP:
1.1548 + //skip
1.1549 + break;
1.1550 + case QUES:
1.1551 + if (peekToken(lookahead, EXTENDS) ||
1.1552 + peekToken(lookahead, SUPER)) {
1.1553 + //wildcards
1.1554 + type = true;
1.1555 + }
1.1556 + break;
1.1557 + case BYTE: case SHORT: case INT: case LONG: case FLOAT:
1.1558 + case DOUBLE: case BOOLEAN: case CHAR:
1.1559 + if (peekToken(lookahead, RPAREN)) {
1.1560 + //Type, ')' -> cast
1.1561 + return ParensResult.CAST;
1.1562 + } else if (peekToken(lookahead, LAX_IDENTIFIER)) {
1.1563 + //Type, Identifier/'_'/'assert'/'enum' -> explicit lambda
1.1564 + return ParensResult.EXPLICIT_LAMBDA;
1.1565 + }
1.1566 + break;
1.1567 + case LPAREN:
1.1568 + if (lookahead != 0) {
1.1569 + // '(' in a non-starting position -> parens
1.1570 + return ParensResult.PARENS;
1.1571 + } else if (peekToken(lookahead, RPAREN)) {
1.1572 + // '(', ')' -> explicit lambda
1.1573 + return ParensResult.EXPLICIT_LAMBDA;
1.1574 + }
1.1575 + break;
1.1576 + case RPAREN:
1.1577 + // if we have seen something that looks like a type,
1.1578 + // then it's a cast expression
1.1579 + if (type) return ParensResult.CAST;
1.1580 + // otherwise, disambiguate cast vs. parenthesized expression
1.1581 + // based on subsequent token.
1.1582 + switch (S.token(lookahead + 1).kind) {
1.1583 + /*case PLUSPLUS: case SUBSUB: */
1.1584 + case BANG: case TILDE:
1.1585 + case LPAREN: case THIS: case SUPER:
1.1586 + case INTLITERAL: case LONGLITERAL: case FLOATLITERAL:
1.1587 + case DOUBLELITERAL: case CHARLITERAL: case STRINGLITERAL:
1.1588 + case TRUE: case FALSE: case NULL:
1.1589 + case NEW: case IDENTIFIER: case ASSERT: case ENUM: case UNDERSCORE:
1.1590 + case BYTE: case SHORT: case CHAR: case INT:
1.1591 + case LONG: case FLOAT: case DOUBLE: case BOOLEAN: case VOID:
1.1592 + return ParensResult.CAST;
1.1593 + default:
1.1594 + return ParensResult.PARENS;
1.1595 + }
1.1596 + case UNDERSCORE:
1.1597 + case ASSERT:
1.1598 + case ENUM:
1.1599 + case IDENTIFIER:
1.1600 + if (peekToken(lookahead, LAX_IDENTIFIER)) {
1.1601 + // Identifier, Identifier/'_'/'assert'/'enum' -> explicit lambda
1.1602 + return ParensResult.EXPLICIT_LAMBDA;
1.1603 + } else if (peekToken(lookahead, RPAREN, ARROW)) {
1.1604 + // Identifier, ')' '->' -> implicit lambda
1.1605 + return ParensResult.IMPLICIT_LAMBDA;
1.1606 + }
1.1607 + type = false;
1.1608 + break;
1.1609 + case FINAL:
1.1610 + case ELLIPSIS:
1.1611 + //those can only appear in explicit lambdas
1.1612 + return ParensResult.EXPLICIT_LAMBDA;
1.1613 + case MONKEYS_AT:
1.1614 + type = true;
1.1615 + lookahead += 1; //skip '@'
1.1616 + while (peekToken(lookahead, DOT)) {
1.1617 + lookahead += 2;
1.1618 + }
1.1619 + if (peekToken(lookahead, LPAREN)) {
1.1620 + lookahead++;
1.1621 + //skip annotation values
1.1622 + int nesting = 0;
1.1623 + for (; ; lookahead++) {
1.1624 + TokenKind tk2 = S.token(lookahead).kind;
1.1625 + switch (tk2) {
1.1626 + case EOF:
1.1627 + return ParensResult.PARENS;
1.1628 + case LPAREN:
1.1629 + nesting++;
1.1630 + break;
1.1631 + case RPAREN:
1.1632 + nesting--;
1.1633 + if (nesting == 0) {
1.1634 + continue outer;
1.1635 + }
1.1636 + break;
1.1637 + }
1.1638 + }
1.1639 + }
1.1640 + break;
1.1641 + case LBRACKET:
1.1642 + if (peekToken(lookahead, RBRACKET, LAX_IDENTIFIER)) {
1.1643 + // '[', ']', Identifier/'_'/'assert'/'enum' -> explicit lambda
1.1644 + return ParensResult.EXPLICIT_LAMBDA;
1.1645 + } else if (peekToken(lookahead, RBRACKET, RPAREN) ||
1.1646 + peekToken(lookahead, RBRACKET, AMP)) {
1.1647 + // '[', ']', ')' -> cast
1.1648 + // '[', ']', '&' -> cast (intersection type)
1.1649 + return ParensResult.CAST;
1.1650 + } else if (peekToken(lookahead, RBRACKET)) {
1.1651 + //consume the ']' and skip
1.1652 + type = true;
1.1653 + lookahead++;
1.1654 + break;
1.1655 + } else {
1.1656 + return ParensResult.PARENS;
1.1657 + }
1.1658 + case LT:
1.1659 + depth++; break;
1.1660 + case GTGTGT:
1.1661 + depth--;
1.1662 + case GTGT:
1.1663 + depth--;
1.1664 + case GT:
1.1665 + depth--;
1.1666 + if (depth == 0) {
1.1667 + if (peekToken(lookahead, RPAREN) ||
1.1668 + peekToken(lookahead, AMP)) {
1.1669 + // '>', ')' -> cast
1.1670 + // '>', '&' -> cast
1.1671 + return ParensResult.CAST;
1.1672 + } else if (peekToken(lookahead, LAX_IDENTIFIER, COMMA) ||
1.1673 + peekToken(lookahead, LAX_IDENTIFIER, RPAREN, ARROW) ||
1.1674 + peekToken(lookahead, ELLIPSIS)) {
1.1675 + // '>', Identifier/'_'/'assert'/'enum', ',' -> explicit lambda
1.1676 + // '>', Identifier/'_'/'assert'/'enum', ')', '->' -> explicit lambda
1.1677 + // '>', '...' -> explicit lambda
1.1678 + return ParensResult.EXPLICIT_LAMBDA;
1.1679 + }
1.1680 + //it looks a type, but could still be (i) a cast to generic type,
1.1681 + //(ii) an unbound method reference or (iii) an explicit lambda
1.1682 + type = true;
1.1683 + break;
1.1684 + } else if (depth < 0) {
1.1685 + //unbalanced '<', '>' - not a generic type
1.1686 + return ParensResult.PARENS;
1.1687 + }
1.1688 + break;
1.1689 + default:
1.1690 + //this includes EOF
1.1691 + return ParensResult.PARENS;
1.1692 + }
1.1693 + }
1.1694 + }
1.1695 +
1.1696 + /** Accepts all identifier-like tokens */
1.1697 + Filter<TokenKind> LAX_IDENTIFIER = new Filter<TokenKind>() {
1.1698 + public boolean accepts(TokenKind t) {
1.1699 + return t == IDENTIFIER || t == UNDERSCORE || t == ASSERT || t == ENUM;
1.1700 + }
1.1701 + };
1.1702 +
1.1703 + enum ParensResult {
1.1704 + CAST,
1.1705 + EXPLICIT_LAMBDA,
1.1706 + IMPLICIT_LAMBDA,
1.1707 + PARENS;
1.1708 + }
1.1709 +
1.1710 + JCExpression lambdaExpressionOrStatement(boolean hasParens, boolean explicitParams, int pos) {
1.1711 + List<JCVariableDecl> params = explicitParams ?
1.1712 + formalParameters(true) :
1.1713 + implicitParameters(hasParens);
1.1714 +
1.1715 + return lambdaExpressionOrStatementRest(params, pos);
1.1716 + }
1.1717 +
1.1718 + JCExpression lambdaExpressionOrStatementRest(List<JCVariableDecl> args, int pos) {
1.1719 + checkLambda();
1.1720 + accept(ARROW);
1.1721 +
1.1722 + return token.kind == LBRACE ?
1.1723 + lambdaStatement(args, pos, pos) :
1.1724 + lambdaExpression(args, pos);
1.1725 + }
1.1726 +
1.1727 + JCExpression lambdaStatement(List<JCVariableDecl> args, int pos, int pos2) {
1.1728 + JCBlock block = block(pos2, 0);
1.1729 + return toP(F.at(pos).Lambda(args, block));
1.1730 + }
1.1731 +
1.1732 + JCExpression lambdaExpression(List<JCVariableDecl> args, int pos) {
1.1733 + JCTree expr = parseExpression();
1.1734 + return toP(F.at(pos).Lambda(args, expr));
1.1735 + }
1.1736 +
1.1737 + /** SuperSuffix = Arguments | "." [TypeArguments] Ident [Arguments]
1.1738 + */
1.1739 + JCExpression superSuffix(List<JCExpression> typeArgs, JCExpression t) {
1.1740 + nextToken();
1.1741 + if (token.kind == LPAREN || typeArgs != null) {
1.1742 + t = arguments(typeArgs, t);
1.1743 + } else if (token.kind == COLCOL) {
1.1744 + if (typeArgs != null) return illegal();
1.1745 + t = memberReferenceSuffix(t);
1.1746 + } else {
1.1747 + int pos = token.pos;
1.1748 + accept(DOT);
1.1749 + typeArgs = (token.kind == LT) ? typeArguments(false) : null;
1.1750 + t = toP(F.at(pos).Select(t, ident()));
1.1751 + t = argumentsOpt(typeArgs, t);
1.1752 + }
1.1753 + return t;
1.1754 + }
1.1755 +
1.1756 + /** BasicType = BYTE | SHORT | CHAR | INT | LONG | FLOAT | DOUBLE | BOOLEAN
1.1757 + */
1.1758 + JCPrimitiveTypeTree basicType() {
1.1759 + JCPrimitiveTypeTree t = to(F.at(token.pos).TypeIdent(typetag(token.kind)));
1.1760 + nextToken();
1.1761 + return t;
1.1762 + }
1.1763 +
1.1764 + /** ArgumentsOpt = [ Arguments ]
1.1765 + */
1.1766 + JCExpression argumentsOpt(List<JCExpression> typeArgs, JCExpression t) {
1.1767 + if ((mode & EXPR) != 0 && token.kind == LPAREN || typeArgs != null) {
1.1768 + mode = EXPR;
1.1769 + return arguments(typeArgs, t);
1.1770 + } else {
1.1771 + return t;
1.1772 + }
1.1773 + }
1.1774 +
1.1775 + /** Arguments = "(" [Expression { COMMA Expression }] ")"
1.1776 + */
1.1777 + List<JCExpression> arguments() {
1.1778 + ListBuffer<JCExpression> args = new ListBuffer<>();
1.1779 + if (token.kind == LPAREN) {
1.1780 + nextToken();
1.1781 + if (token.kind != RPAREN) {
1.1782 + args.append(parseExpression());
1.1783 + while (token.kind == COMMA) {
1.1784 + nextToken();
1.1785 + args.append(parseExpression());
1.1786 + }
1.1787 + }
1.1788 + accept(RPAREN);
1.1789 + } else {
1.1790 + syntaxError(token.pos, "expected", LPAREN);
1.1791 + }
1.1792 + return args.toList();
1.1793 + }
1.1794 +
1.1795 + JCMethodInvocation arguments(List<JCExpression> typeArgs, JCExpression t) {
1.1796 + int pos = token.pos;
1.1797 + List<JCExpression> args = arguments();
1.1798 + return toP(F.at(pos).Apply(typeArgs, t, args));
1.1799 + }
1.1800 +
1.1801 + /** TypeArgumentsOpt = [ TypeArguments ]
1.1802 + */
1.1803 + JCExpression typeArgumentsOpt(JCExpression t) {
1.1804 + if (token.kind == LT &&
1.1805 + (mode & TYPE) != 0 &&
1.1806 + (mode & NOPARAMS) == 0) {
1.1807 + mode = TYPE;
1.1808 + checkGenerics();
1.1809 + return typeArguments(t, false);
1.1810 + } else {
1.1811 + return t;
1.1812 + }
1.1813 + }
1.1814 + List<JCExpression> typeArgumentsOpt() {
1.1815 + return typeArgumentsOpt(TYPE);
1.1816 + }
1.1817 +
1.1818 + List<JCExpression> typeArgumentsOpt(int useMode) {
1.1819 + if (token.kind == LT) {
1.1820 + checkGenerics();
1.1821 + if ((mode & useMode) == 0 ||
1.1822 + (mode & NOPARAMS) != 0) {
1.1823 + illegal();
1.1824 + }
1.1825 + mode = useMode;
1.1826 + return typeArguments(false);
1.1827 + }
1.1828 + return null;
1.1829 + }
1.1830 +
1.1831 + /**
1.1832 + * {@literal
1.1833 + * TypeArguments = "<" TypeArgument {"," TypeArgument} ">"
1.1834 + * }
1.1835 + */
1.1836 + List<JCExpression> typeArguments(boolean diamondAllowed) {
1.1837 + if (token.kind == LT) {
1.1838 + nextToken();
1.1839 + if (token.kind == GT && diamondAllowed) {
1.1840 + checkDiamond();
1.1841 + mode |= DIAMOND;
1.1842 + nextToken();
1.1843 + return List.nil();
1.1844 + } else {
1.1845 + ListBuffer<JCExpression> args = new ListBuffer<>();
1.1846 + args.append(((mode & EXPR) == 0) ? typeArgument() : parseType());
1.1847 + while (token.kind == COMMA) {
1.1848 + nextToken();
1.1849 + args.append(((mode & EXPR) == 0) ? typeArgument() : parseType());
1.1850 + }
1.1851 + switch (token.kind) {
1.1852 +
1.1853 + case GTGTGTEQ: case GTGTEQ: case GTEQ:
1.1854 + case GTGTGT: case GTGT:
1.1855 + token = S.split();
1.1856 + break;
1.1857 + case GT:
1.1858 + nextToken();
1.1859 + break;
1.1860 + default:
1.1861 + args.append(syntaxError(token.pos, "expected", GT));
1.1862 + break;
1.1863 + }
1.1864 + return args.toList();
1.1865 + }
1.1866 + } else {
1.1867 + return List.<JCExpression>of(syntaxError(token.pos, "expected", LT));
1.1868 + }
1.1869 + }
1.1870 +
1.1871 + /**
1.1872 + * {@literal
1.1873 + * TypeArgument = Type
1.1874 + * | [Annotations] "?"
1.1875 + * | [Annotations] "?" EXTENDS Type {"&" Type}
1.1876 + * | [Annotations] "?" SUPER Type
1.1877 + * }
1.1878 + */
1.1879 + JCExpression typeArgument() {
1.1880 + List<JCAnnotation> annotations = typeAnnotationsOpt();
1.1881 + if (token.kind != QUES) return parseType(annotations);
1.1882 + int pos = token.pos;
1.1883 + nextToken();
1.1884 + JCExpression result;
1.1885 + if (token.kind == EXTENDS) {
1.1886 + TypeBoundKind t = to(F.at(pos).TypeBoundKind(BoundKind.EXTENDS));
1.1887 + nextToken();
1.1888 + JCExpression bound = parseType();
1.1889 + result = F.at(pos).Wildcard(t, bound);
1.1890 + } else if (token.kind == SUPER) {
1.1891 + TypeBoundKind t = to(F.at(pos).TypeBoundKind(BoundKind.SUPER));
1.1892 + nextToken();
1.1893 + JCExpression bound = parseType();
1.1894 + result = F.at(pos).Wildcard(t, bound);
1.1895 + } else if (LAX_IDENTIFIER.accepts(token.kind)) {
1.1896 + //error recovery
1.1897 + TypeBoundKind t = F.at(Position.NOPOS).TypeBoundKind(BoundKind.UNBOUND);
1.1898 + JCExpression wc = toP(F.at(pos).Wildcard(t, null));
1.1899 + JCIdent id = toP(F.at(token.pos).Ident(ident()));
1.1900 + JCErroneous err = F.at(pos).Erroneous(List.<JCTree>of(wc, id));
1.1901 + reportSyntaxError(err, "expected3", GT, EXTENDS, SUPER);
1.1902 + result = err;
1.1903 + } else {
1.1904 + TypeBoundKind t = toP(F.at(pos).TypeBoundKind(BoundKind.UNBOUND));
1.1905 + result = toP(F.at(pos).Wildcard(t, null));
1.1906 + }
1.1907 + if (!annotations.isEmpty()) {
1.1908 + result = toP(F.at(annotations.head.pos).AnnotatedType(annotations,result));
1.1909 + }
1.1910 + return result;
1.1911 + }
1.1912 +
1.1913 + JCTypeApply typeArguments(JCExpression t, boolean diamondAllowed) {
1.1914 + int pos = token.pos;
1.1915 + List<JCExpression> args = typeArguments(diamondAllowed);
1.1916 + return toP(F.at(pos).TypeApply(t, args));
1.1917 + }
1.1918 +
1.1919 + /**
1.1920 + * BracketsOpt = { [Annotations] "[" "]" }*
1.1921 + *
1.1922 + * <p>
1.1923 + *
1.1924 + * <code>annotations</code> is the list of annotations targeting
1.1925 + * the expression <code>t</code>.
1.1926 + */
1.1927 + private JCExpression bracketsOpt(JCExpression t,
1.1928 + List<JCAnnotation> annotations) {
1.1929 + List<JCAnnotation> nextLevelAnnotations = typeAnnotationsOpt();
1.1930 +
1.1931 + if (token.kind == LBRACKET) {
1.1932 + int pos = token.pos;
1.1933 + nextToken();
1.1934 + t = bracketsOptCont(t, pos, nextLevelAnnotations);
1.1935 + } else if (!nextLevelAnnotations.isEmpty()) {
1.1936 + if (permitTypeAnnotationsPushBack) {
1.1937 + this.typeAnnotationsPushedBack = nextLevelAnnotations;
1.1938 + } else {
1.1939 + return illegal(nextLevelAnnotations.head.pos);
1.1940 + }
1.1941 + }
1.1942 +
1.1943 + if (!annotations.isEmpty()) {
1.1944 + t = toP(F.at(token.pos).AnnotatedType(annotations, t));
1.1945 + }
1.1946 + return t;
1.1947 + }
1.1948 +
1.1949 + /** BracketsOpt = [ "[" "]" { [Annotations] "[" "]"} ]
1.1950 + */
1.1951 + private JCExpression bracketsOpt(JCExpression t) {
1.1952 + return bracketsOpt(t, List.<JCAnnotation>nil());
1.1953 + }
1.1954 +
1.1955 + private JCExpression bracketsOptCont(JCExpression t, int pos,
1.1956 + List<JCAnnotation> annotations) {
1.1957 + accept(RBRACKET);
1.1958 + t = bracketsOpt(t);
1.1959 + t = toP(F.at(pos).TypeArray(t));
1.1960 + if (annotations.nonEmpty()) {
1.1961 + t = toP(F.at(pos).AnnotatedType(annotations, t));
1.1962 + }
1.1963 + return t;
1.1964 + }
1.1965 +
1.1966 + /** BracketsSuffixExpr = "." CLASS
1.1967 + * BracketsSuffixType =
1.1968 + */
1.1969 + JCExpression bracketsSuffix(JCExpression t) {
1.1970 + if ((mode & EXPR) != 0 && token.kind == DOT) {
1.1971 + mode = EXPR;
1.1972 + int pos = token.pos;
1.1973 + nextToken();
1.1974 + accept(CLASS);
1.1975 + if (token.pos == endPosTable.errorEndPos) {
1.1976 + // error recovery
1.1977 + Name name;
1.1978 + if (LAX_IDENTIFIER.accepts(token.kind)) {
1.1979 + name = token.name();
1.1980 + nextToken();
1.1981 + } else {
1.1982 + name = names.error;
1.1983 + }
1.1984 + t = F.at(pos).Erroneous(List.<JCTree>of(toP(F.at(pos).Select(t, name))));
1.1985 + } else {
1.1986 + t = toP(F.at(pos).Select(t, names._class));
1.1987 + }
1.1988 + } else if ((mode & TYPE) != 0) {
1.1989 + if (token.kind != COLCOL) {
1.1990 + mode = TYPE;
1.1991 + }
1.1992 + } else if (token.kind != COLCOL) {
1.1993 + syntaxError(token.pos, "dot.class.expected");
1.1994 + }
1.1995 + return t;
1.1996 + }
1.1997 +
1.1998 + /**
1.1999 + * MemberReferenceSuffix = "::" [TypeArguments] Ident
1.2000 + * | "::" [TypeArguments] "new"
1.2001 + */
1.2002 + JCExpression memberReferenceSuffix(JCExpression t) {
1.2003 + int pos1 = token.pos;
1.2004 + accept(COLCOL);
1.2005 + return memberReferenceSuffix(pos1, t);
1.2006 + }
1.2007 +
1.2008 + JCExpression memberReferenceSuffix(int pos1, JCExpression t) {
1.2009 + checkMethodReferences();
1.2010 + mode = EXPR;
1.2011 + List<JCExpression> typeArgs = null;
1.2012 + if (token.kind == LT) {
1.2013 + typeArgs = typeArguments(false);
1.2014 + }
1.2015 + Name refName;
1.2016 + ReferenceMode refMode;
1.2017 + if (token.kind == NEW) {
1.2018 + refMode = ReferenceMode.NEW;
1.2019 + refName = names.init;
1.2020 + nextToken();
1.2021 + } else {
1.2022 + refMode = ReferenceMode.INVOKE;
1.2023 + refName = ident();
1.2024 + }
1.2025 + return toP(F.at(t.getStartPosition()).Reference(refMode, refName, t, typeArgs));
1.2026 + }
1.2027 +
1.2028 + /** Creator = [Annotations] Qualident [TypeArguments] ( ArrayCreatorRest | ClassCreatorRest )
1.2029 + */
1.2030 + JCExpression creator(int newpos, List<JCExpression> typeArgs) {
1.2031 + List<JCAnnotation> newAnnotations = typeAnnotationsOpt();
1.2032 +
1.2033 + switch (token.kind) {
1.2034 + case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT:
1.2035 + case DOUBLE: case BOOLEAN:
1.2036 + if (typeArgs == null) {
1.2037 + if (newAnnotations.isEmpty()) {
1.2038 + return arrayCreatorRest(newpos, basicType());
1.2039 + } else {
1.2040 + return arrayCreatorRest(newpos, toP(F.at(newAnnotations.head.pos).AnnotatedType(newAnnotations, basicType())));
1.2041 + }
1.2042 + }
1.2043 + break;
1.2044 + default:
1.2045 + }
1.2046 + JCExpression t = qualident(true);
1.2047 +
1.2048 + int oldmode = mode;
1.2049 + mode = TYPE;
1.2050 + boolean diamondFound = false;
1.2051 + int lastTypeargsPos = -1;
1.2052 + if (token.kind == LT) {
1.2053 + checkGenerics();
1.2054 + lastTypeargsPos = token.pos;
1.2055 + t = typeArguments(t, true);
1.2056 + diamondFound = (mode & DIAMOND) != 0;
1.2057 + }
1.2058 + while (token.kind == DOT) {
1.2059 + if (diamondFound) {
1.2060 + //cannot select after a diamond
1.2061 + illegal();
1.2062 + }
1.2063 + int pos = token.pos;
1.2064 + nextToken();
1.2065 + List<JCAnnotation> tyannos = typeAnnotationsOpt();
1.2066 + t = toP(F.at(pos).Select(t, ident()));
1.2067 +
1.2068 + if (tyannos != null && tyannos.nonEmpty()) {
1.2069 + t = toP(F.at(tyannos.head.pos).AnnotatedType(tyannos, t));
1.2070 + }
1.2071 +
1.2072 + if (token.kind == LT) {
1.2073 + lastTypeargsPos = token.pos;
1.2074 + checkGenerics();
1.2075 + t = typeArguments(t, true);
1.2076 + diamondFound = (mode & DIAMOND) != 0;
1.2077 + }
1.2078 + }
1.2079 + mode = oldmode;
1.2080 + if (token.kind == LBRACKET || token.kind == MONKEYS_AT) {
1.2081 + // handle type annotations for non primitive arrays
1.2082 + if (newAnnotations.nonEmpty()) {
1.2083 + t = insertAnnotationsToMostInner(t, newAnnotations, false);
1.2084 + }
1.2085 +
1.2086 + JCExpression e = arrayCreatorRest(newpos, t);
1.2087 + if (diamondFound) {
1.2088 + reportSyntaxError(lastTypeargsPos, "cannot.create.array.with.diamond");
1.2089 + return toP(F.at(newpos).Erroneous(List.of(e)));
1.2090 + }
1.2091 + else if (typeArgs != null) {
1.2092 + int pos = newpos;
1.2093 + if (!typeArgs.isEmpty() && typeArgs.head.pos != Position.NOPOS) {
1.2094 + // note: this should always happen but we should
1.2095 + // not rely on this as the parser is continuously
1.2096 + // modified to improve error recovery.
1.2097 + pos = typeArgs.head.pos;
1.2098 + }
1.2099 + setErrorEndPos(S.prevToken().endPos);
1.2100 + JCErroneous err = F.at(pos).Erroneous(typeArgs.prepend(e));
1.2101 + reportSyntaxError(err, "cannot.create.array.with.type.arguments");
1.2102 + return toP(err);
1.2103 + }
1.2104 + return e;
1.2105 + } else if (token.kind == LPAREN) {
1.2106 + JCNewClass newClass = classCreatorRest(newpos, null, typeArgs, t);
1.2107 + if (newClass.def != null) {
1.2108 + assert newClass.def.mods.annotations.isEmpty();
1.2109 + if (newAnnotations.nonEmpty()) {
1.2110 + // Add type and declaration annotations to the new class;
1.2111 + // com.sun.tools.javac.code.TypeAnnotations.TypeAnnotationPositions.visitNewClass(JCNewClass)
1.2112 + // will later remove all type annotations and only leave the
1.2113 + // declaration annotations.
1.2114 + newClass.def.mods.pos = earlier(newClass.def.mods.pos, newAnnotations.head.pos);
1.2115 + newClass.def.mods.annotations = newAnnotations;
1.2116 + }
1.2117 + } else {
1.2118 + // handle type annotations for instantiations
1.2119 + if (newAnnotations.nonEmpty()) {
1.2120 + t = insertAnnotationsToMostInner(t, newAnnotations, false);
1.2121 + newClass.clazz = t;
1.2122 + }
1.2123 + }
1.2124 + return newClass;
1.2125 + } else {
1.2126 + setErrorEndPos(token.pos);
1.2127 + reportSyntaxError(token.pos, "expected2", LPAREN, LBRACKET);
1.2128 + t = toP(F.at(newpos).NewClass(null, typeArgs, t, List.<JCExpression>nil(), null));
1.2129 + return toP(F.at(newpos).Erroneous(List.<JCTree>of(t)));
1.2130 + }
1.2131 + }
1.2132 +
1.2133 + /** InnerCreator = [Annotations] Ident [TypeArguments] ClassCreatorRest
1.2134 + */
1.2135 + JCExpression innerCreator(int newpos, List<JCExpression> typeArgs, JCExpression encl) {
1.2136 + List<JCAnnotation> newAnnotations = typeAnnotationsOpt();
1.2137 +
1.2138 + JCExpression t = toP(F.at(token.pos).Ident(ident()));
1.2139 +
1.2140 + if (newAnnotations.nonEmpty()) {
1.2141 + t = toP(F.at(newAnnotations.head.pos).AnnotatedType(newAnnotations, t));
1.2142 + }
1.2143 +
1.2144 + if (token.kind == LT) {
1.2145 + int oldmode = mode;
1.2146 + checkGenerics();
1.2147 + t = typeArguments(t, true);
1.2148 + mode = oldmode;
1.2149 + }
1.2150 + return classCreatorRest(newpos, encl, typeArgs, t);
1.2151 + }
1.2152 +
1.2153 + /** ArrayCreatorRest = [Annotations] "[" ( "]" BracketsOpt ArrayInitializer
1.2154 + * | Expression "]" {[Annotations] "[" Expression "]"} BracketsOpt )
1.2155 + */
1.2156 + JCExpression arrayCreatorRest(int newpos, JCExpression elemtype) {
1.2157 + List<JCAnnotation> annos = typeAnnotationsOpt();
1.2158 +
1.2159 + accept(LBRACKET);
1.2160 + if (token.kind == RBRACKET) {
1.2161 + accept(RBRACKET);
1.2162 + elemtype = bracketsOpt(elemtype, annos);
1.2163 + if (token.kind == LBRACE) {
1.2164 + JCNewArray na = (JCNewArray)arrayInitializer(newpos, elemtype);
1.2165 + if (annos.nonEmpty()) {
1.2166 + // when an array initializer is present then
1.2167 + // the parsed annotations should target the
1.2168 + // new array tree
1.2169 + // bracketsOpt inserts the annotation in
1.2170 + // elemtype, and it needs to be corrected
1.2171 + //
1.2172 + JCAnnotatedType annotated = (JCAnnotatedType)elemtype;
1.2173 + assert annotated.annotations == annos;
1.2174 + na.annotations = annotated.annotations;
1.2175 + na.elemtype = annotated.underlyingType;
1.2176 + }
1.2177 + return na;
1.2178 + } else {
1.2179 + JCExpression t = toP(F.at(newpos).NewArray(elemtype, List.<JCExpression>nil(), null));
1.2180 + return syntaxError(token.pos, List.<JCTree>of(t), "array.dimension.missing");
1.2181 + }
1.2182 + } else {
1.2183 + ListBuffer<JCExpression> dims = new ListBuffer<JCExpression>();
1.2184 +
1.2185 + // maintain array dimension type annotations
1.2186 + ListBuffer<List<JCAnnotation>> dimAnnotations = new ListBuffer<>();
1.2187 + dimAnnotations.append(annos);
1.2188 +
1.2189 + dims.append(parseExpression());
1.2190 + accept(RBRACKET);
1.2191 + while (token.kind == LBRACKET
1.2192 + || token.kind == MONKEYS_AT) {
1.2193 + List<JCAnnotation> maybeDimAnnos = typeAnnotationsOpt();
1.2194 + int pos = token.pos;
1.2195 + nextToken();
1.2196 + if (token.kind == RBRACKET) {
1.2197 + elemtype = bracketsOptCont(elemtype, pos, maybeDimAnnos);
1.2198 + } else {
1.2199 + if (token.kind == RBRACKET) { // no dimension
1.2200 + elemtype = bracketsOptCont(elemtype, pos, maybeDimAnnos);
1.2201 + } else {
1.2202 + dimAnnotations.append(maybeDimAnnos);
1.2203 + dims.append(parseExpression());
1.2204 + accept(RBRACKET);
1.2205 + }
1.2206 + }
1.2207 + }
1.2208 +
1.2209 + JCNewArray na = toP(F.at(newpos).NewArray(elemtype, dims.toList(), null));
1.2210 + na.dimAnnotations = dimAnnotations.toList();
1.2211 + return na;
1.2212 + }
1.2213 + }
1.2214 +
1.2215 + /** ClassCreatorRest = Arguments [ClassBody]
1.2216 + */
1.2217 + JCNewClass classCreatorRest(int newpos,
1.2218 + JCExpression encl,
1.2219 + List<JCExpression> typeArgs,
1.2220 + JCExpression t)
1.2221 + {
1.2222 + List<JCExpression> args = arguments();
1.2223 + JCClassDecl body = null;
1.2224 + if (token.kind == LBRACE) {
1.2225 + int pos = token.pos;
1.2226 + List<JCTree> defs = classOrInterfaceBody(names.empty, false);
1.2227 + JCModifiers mods = F.at(Position.NOPOS).Modifiers(0);
1.2228 + body = toP(F.at(pos).AnonymousClassDef(mods, defs));
1.2229 + }
1.2230 + return toP(F.at(newpos).NewClass(encl, typeArgs, t, args, body));
1.2231 + }
1.2232 +
1.2233 + /** ArrayInitializer = "{" [VariableInitializer {"," VariableInitializer}] [","] "}"
1.2234 + */
1.2235 + JCExpression arrayInitializer(int newpos, JCExpression t) {
1.2236 + accept(LBRACE);
1.2237 + ListBuffer<JCExpression> elems = new ListBuffer<JCExpression>();
1.2238 + if (token.kind == COMMA) {
1.2239 + nextToken();
1.2240 + } else if (token.kind != RBRACE) {
1.2241 + elems.append(variableInitializer());
1.2242 + while (token.kind == COMMA) {
1.2243 + nextToken();
1.2244 + if (token.kind == RBRACE) break;
1.2245 + elems.append(variableInitializer());
1.2246 + }
1.2247 + }
1.2248 + accept(RBRACE);
1.2249 + return toP(F.at(newpos).NewArray(t, List.<JCExpression>nil(), elems.toList()));
1.2250 + }
1.2251 +
1.2252 + /** VariableInitializer = ArrayInitializer | Expression
1.2253 + */
1.2254 + public JCExpression variableInitializer() {
1.2255 + return token.kind == LBRACE ? arrayInitializer(token.pos, null) : parseExpression();
1.2256 + }
1.2257 +
1.2258 + /** ParExpression = "(" Expression ")"
1.2259 + */
1.2260 + JCExpression parExpression() {
1.2261 + int pos = token.pos;
1.2262 + accept(LPAREN);
1.2263 + JCExpression t = parseExpression();
1.2264 + accept(RPAREN);
1.2265 + return toP(F.at(pos).Parens(t));
1.2266 + }
1.2267 +
1.2268 + /** Block = "{" BlockStatements "}"
1.2269 + */
1.2270 + JCBlock block(int pos, long flags) {
1.2271 + accept(LBRACE);
1.2272 + List<JCStatement> stats = blockStatements();
1.2273 + JCBlock t = F.at(pos).Block(flags, stats);
1.2274 + while (token.kind == CASE || token.kind == DEFAULT) {
1.2275 + syntaxError("orphaned", token.kind);
1.2276 + switchBlockStatementGroups();
1.2277 + }
1.2278 + // the Block node has a field "endpos" for first char of last token, which is
1.2279 + // usually but not necessarily the last char of the last token.
1.2280 + t.endpos = token.pos;
1.2281 + accept(RBRACE);
1.2282 + return toP(t);
1.2283 + }
1.2284 +
1.2285 + public JCBlock block() {
1.2286 + return block(token.pos, 0);
1.2287 + }
1.2288 +
1.2289 + /** BlockStatements = { BlockStatement }
1.2290 + * BlockStatement = LocalVariableDeclarationStatement
1.2291 + * | ClassOrInterfaceOrEnumDeclaration
1.2292 + * | [Ident ":"] Statement
1.2293 + * LocalVariableDeclarationStatement
1.2294 + * = { FINAL | '@' Annotation } Type VariableDeclarators ";"
1.2295 + */
1.2296 + @SuppressWarnings("fallthrough")
1.2297 + List<JCStatement> blockStatements() {
1.2298 + //todo: skip to anchor on error(?)
1.2299 + ListBuffer<JCStatement> stats = new ListBuffer<JCStatement>();
1.2300 + while (true) {
1.2301 + List<JCStatement> stat = blockStatement();
1.2302 + if (stat.isEmpty()) {
1.2303 + return stats.toList();
1.2304 + } else {
1.2305 + if (token.pos <= endPosTable.errorEndPos) {
1.2306 + skip(false, true, true, true);
1.2307 + }
1.2308 + stats.addAll(stat);
1.2309 + }
1.2310 + }
1.2311 + }
1.2312 +
1.2313 + /*
1.2314 + * This method parses a statement treating it as a block, relaxing the
1.2315 + * JLS restrictions, allows us to parse more faulty code, doing so
1.2316 + * enables us to provide better and accurate diagnostics to the user.
1.2317 + */
1.2318 + JCStatement parseStatementAsBlock() {
1.2319 + int pos = token.pos;
1.2320 + List<JCStatement> stats = blockStatement();
1.2321 + if (stats.isEmpty()) {
1.2322 + JCErroneous e = F.at(pos).Erroneous();
1.2323 + error(e, "illegal.start.of.stmt");
1.2324 + return F.at(pos).Exec(e);
1.2325 + } else {
1.2326 + JCStatement first = stats.head;
1.2327 + String error = null;
1.2328 + switch (first.getTag()) {
1.2329 + case CLASSDEF:
1.2330 + error = "class.not.allowed";
1.2331 + break;
1.2332 + case VARDEF:
1.2333 + error = "variable.not.allowed";
1.2334 + break;
1.2335 + }
1.2336 + if (error != null) {
1.2337 + error(first, error);
1.2338 + List<JCBlock> blist = List.of(F.at(first.pos).Block(0, stats));
1.2339 + return toP(F.at(pos).Exec(F.at(first.pos).Erroneous(blist)));
1.2340 + }
1.2341 + return first;
1.2342 + }
1.2343 + }
1.2344 +
1.2345 + @SuppressWarnings("fallthrough")
1.2346 + List<JCStatement> blockStatement() {
1.2347 + //todo: skip to anchor on error(?)
1.2348 + int pos = token.pos;
1.2349 + switch (token.kind) {
1.2350 + case RBRACE: case CASE: case DEFAULT: case EOF:
1.2351 + return List.nil();
1.2352 + case LBRACE: case IF: case FOR: case WHILE: case DO: case TRY:
1.2353 + case SWITCH: case SYNCHRONIZED: case RETURN: case THROW: case BREAK:
1.2354 + case CONTINUE: case SEMI: case ELSE: case FINALLY: case CATCH:
1.2355 + return List.of(parseStatement());
1.2356 + case MONKEYS_AT:
1.2357 + case FINAL: {
1.2358 + Comment dc = token.comment(CommentStyle.JAVADOC);
1.2359 + JCModifiers mods = modifiersOpt();
1.2360 + if (token.kind == INTERFACE ||
1.2361 + token.kind == CLASS ||
1.2362 + allowEnums && token.kind == ENUM) {
1.2363 + return List.of(classOrInterfaceOrEnumDeclaration(mods, dc));
1.2364 + } else {
1.2365 + JCExpression t = parseType();
1.2366 + ListBuffer<JCStatement> stats =
1.2367 + variableDeclarators(mods, t, new ListBuffer<JCStatement>());
1.2368 + // A "LocalVariableDeclarationStatement" subsumes the terminating semicolon
1.2369 + storeEnd(stats.last(), token.endPos);
1.2370 + accept(SEMI);
1.2371 + return stats.toList();
1.2372 + }
1.2373 + }
1.2374 + case ABSTRACT: case STRICTFP: {
1.2375 + Comment dc = token.comment(CommentStyle.JAVADOC);
1.2376 + JCModifiers mods = modifiersOpt();
1.2377 + return List.of(classOrInterfaceOrEnumDeclaration(mods, dc));
1.2378 + }
1.2379 + case INTERFACE:
1.2380 + case CLASS:
1.2381 + Comment dc = token.comment(CommentStyle.JAVADOC);
1.2382 + return List.of(classOrInterfaceOrEnumDeclaration(modifiersOpt(), dc));
1.2383 + case ENUM:
1.2384 + case ASSERT:
1.2385 + if (allowEnums && token.kind == ENUM) {
1.2386 + error(token.pos, "local.enum");
1.2387 + dc = token.comment(CommentStyle.JAVADOC);
1.2388 + return List.of(classOrInterfaceOrEnumDeclaration(modifiersOpt(), dc));
1.2389 + } else if (allowAsserts && token.kind == ASSERT) {
1.2390 + return List.of(parseStatement());
1.2391 + }
1.2392 + /* fall through to default */
1.2393 + default:
1.2394 + Token prevToken = token;
1.2395 + JCExpression t = term(EXPR | TYPE);
1.2396 + if (token.kind == COLON && t.hasTag(IDENT)) {
1.2397 + nextToken();
1.2398 + JCStatement stat = parseStatement();
1.2399 + return List.<JCStatement>of(F.at(pos).Labelled(prevToken.name(), stat));
1.2400 + } else if ((lastmode & TYPE) != 0 && LAX_IDENTIFIER.accepts(token.kind)) {
1.2401 + pos = token.pos;
1.2402 + JCModifiers mods = F.at(Position.NOPOS).Modifiers(0);
1.2403 + F.at(pos);
1.2404 + ListBuffer<JCStatement> stats =
1.2405 + variableDeclarators(mods, t, new ListBuffer<JCStatement>());
1.2406 + // A "LocalVariableDeclarationStatement" subsumes the terminating semicolon
1.2407 + storeEnd(stats.last(), token.endPos);
1.2408 + accept(SEMI);
1.2409 + return stats.toList();
1.2410 + } else {
1.2411 + // This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon
1.2412 + JCExpressionStatement expr = to(F.at(pos).Exec(checkExprStat(t)));
1.2413 + accept(SEMI);
1.2414 + return List.<JCStatement>of(expr);
1.2415 + }
1.2416 + }
1.2417 + }
1.2418 +
1.2419 + /** Statement =
1.2420 + * Block
1.2421 + * | IF ParExpression Statement [ELSE Statement]
1.2422 + * | FOR "(" ForInitOpt ";" [Expression] ";" ForUpdateOpt ")" Statement
1.2423 + * | FOR "(" FormalParameter : Expression ")" Statement
1.2424 + * | WHILE ParExpression Statement
1.2425 + * | DO Statement WHILE ParExpression ";"
1.2426 + * | TRY Block ( Catches | [Catches] FinallyPart )
1.2427 + * | TRY "(" ResourceSpecification ";"opt ")" Block [Catches] [FinallyPart]
1.2428 + * | SWITCH ParExpression "{" SwitchBlockStatementGroups "}"
1.2429 + * | SYNCHRONIZED ParExpression Block
1.2430 + * | RETURN [Expression] ";"
1.2431 + * | THROW Expression ";"
1.2432 + * | BREAK [Ident] ";"
1.2433 + * | CONTINUE [Ident] ";"
1.2434 + * | ASSERT Expression [ ":" Expression ] ";"
1.2435 + * | ";"
1.2436 + * | ExpressionStatement
1.2437 + * | Ident ":" Statement
1.2438 + */
1.2439 + @SuppressWarnings("fallthrough")
1.2440 + public JCStatement parseStatement() {
1.2441 + int pos = token.pos;
1.2442 + switch (token.kind) {
1.2443 + case LBRACE:
1.2444 + return block();
1.2445 + case IF: {
1.2446 + nextToken();
1.2447 + JCExpression cond = parExpression();
1.2448 + JCStatement thenpart = parseStatementAsBlock();
1.2449 + JCStatement elsepart = null;
1.2450 + if (token.kind == ELSE) {
1.2451 + nextToken();
1.2452 + elsepart = parseStatementAsBlock();
1.2453 + }
1.2454 + return F.at(pos).If(cond, thenpart, elsepart);
1.2455 + }
1.2456 + case FOR: {
1.2457 + nextToken();
1.2458 + accept(LPAREN);
1.2459 + List<JCStatement> inits = token.kind == SEMI ? List.<JCStatement>nil() : forInit();
1.2460 + if (inits.length() == 1 &&
1.2461 + inits.head.hasTag(VARDEF) &&
1.2462 + ((JCVariableDecl) inits.head).init == null &&
1.2463 + token.kind == COLON) {
1.2464 + checkForeach();
1.2465 + JCVariableDecl var = (JCVariableDecl)inits.head;
1.2466 + accept(COLON);
1.2467 + JCExpression expr = parseExpression();
1.2468 + accept(RPAREN);
1.2469 + JCStatement body = parseStatementAsBlock();
1.2470 + return F.at(pos).ForeachLoop(var, expr, body);
1.2471 + } else {
1.2472 + accept(SEMI);
1.2473 + JCExpression cond = token.kind == SEMI ? null : parseExpression();
1.2474 + accept(SEMI);
1.2475 + List<JCExpressionStatement> steps = token.kind == RPAREN ? List.<JCExpressionStatement>nil() : forUpdate();
1.2476 + accept(RPAREN);
1.2477 + JCStatement body = parseStatementAsBlock();
1.2478 + return F.at(pos).ForLoop(inits, cond, steps, body);
1.2479 + }
1.2480 + }
1.2481 + case WHILE: {
1.2482 + nextToken();
1.2483 + JCExpression cond = parExpression();
1.2484 + JCStatement body = parseStatementAsBlock();
1.2485 + return F.at(pos).WhileLoop(cond, body);
1.2486 + }
1.2487 + case DO: {
1.2488 + nextToken();
1.2489 + JCStatement body = parseStatementAsBlock();
1.2490 + accept(WHILE);
1.2491 + JCExpression cond = parExpression();
1.2492 + JCDoWhileLoop t = to(F.at(pos).DoLoop(body, cond));
1.2493 + accept(SEMI);
1.2494 + return t;
1.2495 + }
1.2496 + case TRY: {
1.2497 + nextToken();
1.2498 + List<JCTree> resources = List.<JCTree>nil();
1.2499 + if (token.kind == LPAREN) {
1.2500 + checkTryWithResources();
1.2501 + nextToken();
1.2502 + resources = resources();
1.2503 + accept(RPAREN);
1.2504 + }
1.2505 + JCBlock body = block();
1.2506 + ListBuffer<JCCatch> catchers = new ListBuffer<JCCatch>();
1.2507 + JCBlock finalizer = null;
1.2508 + if (token.kind == CATCH || token.kind == FINALLY) {
1.2509 + while (token.kind == CATCH) catchers.append(catchClause());
1.2510 + if (token.kind == FINALLY) {
1.2511 + nextToken();
1.2512 + finalizer = block();
1.2513 + }
1.2514 + } else {
1.2515 + if (allowTWR) {
1.2516 + if (resources.isEmpty())
1.2517 + error(pos, "try.without.catch.finally.or.resource.decls");
1.2518 + } else
1.2519 + error(pos, "try.without.catch.or.finally");
1.2520 + }
1.2521 + return F.at(pos).Try(resources, body, catchers.toList(), finalizer);
1.2522 + }
1.2523 + case SWITCH: {
1.2524 + nextToken();
1.2525 + JCExpression selector = parExpression();
1.2526 + accept(LBRACE);
1.2527 + List<JCCase> cases = switchBlockStatementGroups();
1.2528 + JCSwitch t = to(F.at(pos).Switch(selector, cases));
1.2529 + accept(RBRACE);
1.2530 + return t;
1.2531 + }
1.2532 + case SYNCHRONIZED: {
1.2533 + nextToken();
1.2534 + JCExpression lock = parExpression();
1.2535 + JCBlock body = block();
1.2536 + return F.at(pos).Synchronized(lock, body);
1.2537 + }
1.2538 + case RETURN: {
1.2539 + nextToken();
1.2540 + JCExpression result = token.kind == SEMI ? null : parseExpression();
1.2541 + JCReturn t = to(F.at(pos).Return(result));
1.2542 + accept(SEMI);
1.2543 + return t;
1.2544 + }
1.2545 + case THROW: {
1.2546 + nextToken();
1.2547 + JCExpression exc = parseExpression();
1.2548 + JCThrow t = to(F.at(pos).Throw(exc));
1.2549 + accept(SEMI);
1.2550 + return t;
1.2551 + }
1.2552 + case BREAK: {
1.2553 + nextToken();
1.2554 + Name label = LAX_IDENTIFIER.accepts(token.kind) ? ident() : null;
1.2555 + JCBreak t = to(F.at(pos).Break(label));
1.2556 + accept(SEMI);
1.2557 + return t;
1.2558 + }
1.2559 + case CONTINUE: {
1.2560 + nextToken();
1.2561 + Name label = LAX_IDENTIFIER.accepts(token.kind) ? ident() : null;
1.2562 + JCContinue t = to(F.at(pos).Continue(label));
1.2563 + accept(SEMI);
1.2564 + return t;
1.2565 + }
1.2566 + case SEMI:
1.2567 + nextToken();
1.2568 + return toP(F.at(pos).Skip());
1.2569 + case ELSE:
1.2570 + int elsePos = token.pos;
1.2571 + nextToken();
1.2572 + return doRecover(elsePos, BasicErrorRecoveryAction.BLOCK_STMT, "else.without.if");
1.2573 + case FINALLY:
1.2574 + int finallyPos = token.pos;
1.2575 + nextToken();
1.2576 + return doRecover(finallyPos, BasicErrorRecoveryAction.BLOCK_STMT, "finally.without.try");
1.2577 + case CATCH:
1.2578 + return doRecover(token.pos, BasicErrorRecoveryAction.CATCH_CLAUSE, "catch.without.try");
1.2579 + case ASSERT: {
1.2580 + if (allowAsserts && token.kind == ASSERT) {
1.2581 + nextToken();
1.2582 + JCExpression assertion = parseExpression();
1.2583 + JCExpression message = null;
1.2584 + if (token.kind == COLON) {
1.2585 + nextToken();
1.2586 + message = parseExpression();
1.2587 + }
1.2588 + JCAssert t = to(F.at(pos).Assert(assertion, message));
1.2589 + accept(SEMI);
1.2590 + return t;
1.2591 + }
1.2592 + /* else fall through to default case */
1.2593 + }
1.2594 + case ENUM:
1.2595 + default:
1.2596 + Token prevToken = token;
1.2597 + JCExpression expr = parseExpression();
1.2598 + if (token.kind == COLON && expr.hasTag(IDENT)) {
1.2599 + nextToken();
1.2600 + JCStatement stat = parseStatement();
1.2601 + return F.at(pos).Labelled(prevToken.name(), stat);
1.2602 + } else {
1.2603 + // This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon
1.2604 + JCExpressionStatement stat = to(F.at(pos).Exec(checkExprStat(expr)));
1.2605 + accept(SEMI);
1.2606 + return stat;
1.2607 + }
1.2608 + }
1.2609 + }
1.2610 +
1.2611 + private JCStatement doRecover(int startPos, ErrorRecoveryAction action, String key) {
1.2612 + int errPos = S.errPos();
1.2613 + JCTree stm = action.doRecover(this);
1.2614 + S.errPos(errPos);
1.2615 + return toP(F.Exec(syntaxError(startPos, List.<JCTree>of(stm), key)));
1.2616 + }
1.2617 +
1.2618 + /** CatchClause = CATCH "(" FormalParameter ")" Block
1.2619 + * TODO: the "FormalParameter" is not correct, it uses the special "catchTypes" rule below.
1.2620 + */
1.2621 + protected JCCatch catchClause() {
1.2622 + int pos = token.pos;
1.2623 + accept(CATCH);
1.2624 + accept(LPAREN);
1.2625 + JCModifiers mods = optFinal(Flags.PARAMETER);
1.2626 + List<JCExpression> catchTypes = catchTypes();
1.2627 + JCExpression paramType = catchTypes.size() > 1 ?
1.2628 + toP(F.at(catchTypes.head.getStartPosition()).TypeUnion(catchTypes)) :
1.2629 + catchTypes.head;
1.2630 + JCVariableDecl formal = variableDeclaratorId(mods, paramType);
1.2631 + accept(RPAREN);
1.2632 + JCBlock body = block();
1.2633 + return F.at(pos).Catch(formal, body);
1.2634 + }
1.2635 +
1.2636 + List<JCExpression> catchTypes() {
1.2637 + ListBuffer<JCExpression> catchTypes = new ListBuffer<>();
1.2638 + catchTypes.add(parseType());
1.2639 + while (token.kind == BAR) {
1.2640 + checkMulticatch();
1.2641 + nextToken();
1.2642 + // Instead of qualident this is now parseType.
1.2643 + // But would that allow too much, e.g. arrays or generics?
1.2644 + catchTypes.add(parseType());
1.2645 + }
1.2646 + return catchTypes.toList();
1.2647 + }
1.2648 +
1.2649 + /** SwitchBlockStatementGroups = { SwitchBlockStatementGroup }
1.2650 + * SwitchBlockStatementGroup = SwitchLabel BlockStatements
1.2651 + * SwitchLabel = CASE ConstantExpression ":" | DEFAULT ":"
1.2652 + */
1.2653 + List<JCCase> switchBlockStatementGroups() {
1.2654 + ListBuffer<JCCase> cases = new ListBuffer<JCCase>();
1.2655 + while (true) {
1.2656 + int pos = token.pos;
1.2657 + switch (token.kind) {
1.2658 + case CASE:
1.2659 + case DEFAULT:
1.2660 + cases.append(switchBlockStatementGroup());
1.2661 + break;
1.2662 + case RBRACE: case EOF:
1.2663 + return cases.toList();
1.2664 + default:
1.2665 + nextToken(); // to ensure progress
1.2666 + syntaxError(pos, "expected3",
1.2667 + CASE, DEFAULT, RBRACE);
1.2668 + }
1.2669 + }
1.2670 + }
1.2671 +
1.2672 + protected JCCase switchBlockStatementGroup() {
1.2673 + int pos = token.pos;
1.2674 + List<JCStatement> stats;
1.2675 + JCCase c;
1.2676 + switch (token.kind) {
1.2677 + case CASE:
1.2678 + nextToken();
1.2679 + JCExpression pat = parseExpression();
1.2680 + accept(COLON);
1.2681 + stats = blockStatements();
1.2682 + c = F.at(pos).Case(pat, stats);
1.2683 + if (stats.isEmpty())
1.2684 + storeEnd(c, S.prevToken().endPos);
1.2685 + return c;
1.2686 + case DEFAULT:
1.2687 + nextToken();
1.2688 + accept(COLON);
1.2689 + stats = blockStatements();
1.2690 + c = F.at(pos).Case(null, stats);
1.2691 + if (stats.isEmpty())
1.2692 + storeEnd(c, S.prevToken().endPos);
1.2693 + return c;
1.2694 + }
1.2695 + throw new AssertionError("should not reach here");
1.2696 + }
1.2697 +
1.2698 + /** MoreStatementExpressions = { COMMA StatementExpression }
1.2699 + */
1.2700 + <T extends ListBuffer<? super JCExpressionStatement>> T moreStatementExpressions(int pos,
1.2701 + JCExpression first,
1.2702 + T stats) {
1.2703 + // This Exec is a "StatementExpression"; it subsumes no terminating token
1.2704 + stats.append(toP(F.at(pos).Exec(checkExprStat(first))));
1.2705 + while (token.kind == COMMA) {
1.2706 + nextToken();
1.2707 + pos = token.pos;
1.2708 + JCExpression t = parseExpression();
1.2709 + // This Exec is a "StatementExpression"; it subsumes no terminating token
1.2710 + stats.append(toP(F.at(pos).Exec(checkExprStat(t))));
1.2711 + }
1.2712 + return stats;
1.2713 + }
1.2714 +
1.2715 + /** ForInit = StatementExpression MoreStatementExpressions
1.2716 + * | { FINAL | '@' Annotation } Type VariableDeclarators
1.2717 + */
1.2718 + List<JCStatement> forInit() {
1.2719 + ListBuffer<JCStatement> stats = new ListBuffer<>();
1.2720 + int pos = token.pos;
1.2721 + if (token.kind == FINAL || token.kind == MONKEYS_AT) {
1.2722 + return variableDeclarators(optFinal(0), parseType(), stats).toList();
1.2723 + } else {
1.2724 + JCExpression t = term(EXPR | TYPE);
1.2725 + if ((lastmode & TYPE) != 0 && LAX_IDENTIFIER.accepts(token.kind)) {
1.2726 + return variableDeclarators(modifiersOpt(), t, stats).toList();
1.2727 + } else if ((lastmode & TYPE) != 0 && token.kind == COLON) {
1.2728 + error(pos, "bad.initializer", "for-loop");
1.2729 + return List.of((JCStatement)F.at(pos).VarDef(null, null, t, null));
1.2730 + } else {
1.2731 + return moreStatementExpressions(pos, t, stats).toList();
1.2732 + }
1.2733 + }
1.2734 + }
1.2735 +
1.2736 + /** ForUpdate = StatementExpression MoreStatementExpressions
1.2737 + */
1.2738 + List<JCExpressionStatement> forUpdate() {
1.2739 + return moreStatementExpressions(token.pos,
1.2740 + parseExpression(),
1.2741 + new ListBuffer<JCExpressionStatement>()).toList();
1.2742 + }
1.2743 +
1.2744 + /** AnnotationsOpt = { '@' Annotation }
1.2745 + *
1.2746 + * @param kind Whether to parse an ANNOTATION or TYPE_ANNOTATION
1.2747 + */
1.2748 + List<JCAnnotation> annotationsOpt(Tag kind) {
1.2749 + if (token.kind != MONKEYS_AT) return List.nil(); // optimization
1.2750 + ListBuffer<JCAnnotation> buf = new ListBuffer<JCAnnotation>();
1.2751 + int prevmode = mode;
1.2752 + while (token.kind == MONKEYS_AT) {
1.2753 + int pos = token.pos;
1.2754 + nextToken();
1.2755 + buf.append(annotation(pos, kind));
1.2756 + }
1.2757 + lastmode = mode;
1.2758 + mode = prevmode;
1.2759 + List<JCAnnotation> annotations = buf.toList();
1.2760 +
1.2761 + return annotations;
1.2762 + }
1.2763 +
1.2764 + List<JCAnnotation> typeAnnotationsOpt() {
1.2765 + List<JCAnnotation> annotations = annotationsOpt(Tag.TYPE_ANNOTATION);
1.2766 + return annotations;
1.2767 + }
1.2768 +
1.2769 + /** ModifiersOpt = { Modifier }
1.2770 + * Modifier = PUBLIC | PROTECTED | PRIVATE | STATIC | ABSTRACT | FINAL
1.2771 + * | NATIVE | SYNCHRONIZED | TRANSIENT | VOLATILE | "@"
1.2772 + * | "@" Annotation
1.2773 + */
1.2774 + JCModifiers modifiersOpt() {
1.2775 + return modifiersOpt(null);
1.2776 + }
1.2777 + protected JCModifiers modifiersOpt(JCModifiers partial) {
1.2778 + long flags;
1.2779 + ListBuffer<JCAnnotation> annotations = new ListBuffer<JCAnnotation>();
1.2780 + int pos;
1.2781 + if (partial == null) {
1.2782 + flags = 0;
1.2783 + pos = token.pos;
1.2784 + } else {
1.2785 + flags = partial.flags;
1.2786 + annotations.appendList(partial.annotations);
1.2787 + pos = partial.pos;
1.2788 + }
1.2789 + if (token.deprecatedFlag()) {
1.2790 + flags |= Flags.DEPRECATED;
1.2791 + }
1.2792 + int lastPos;
1.2793 + loop:
1.2794 + while (true) {
1.2795 + long flag;
1.2796 + switch (token.kind) {
1.2797 + case PRIVATE : flag = Flags.PRIVATE; break;
1.2798 + case PROTECTED : flag = Flags.PROTECTED; break;
1.2799 + case PUBLIC : flag = Flags.PUBLIC; break;
1.2800 + case STATIC : flag = Flags.STATIC; break;
1.2801 + case TRANSIENT : flag = Flags.TRANSIENT; break;
1.2802 + case FINAL : flag = Flags.FINAL; break;
1.2803 + case ABSTRACT : flag = Flags.ABSTRACT; break;
1.2804 + case NATIVE : flag = Flags.NATIVE; break;
1.2805 + case VOLATILE : flag = Flags.VOLATILE; break;
1.2806 + case SYNCHRONIZED: flag = Flags.SYNCHRONIZED; break;
1.2807 + case STRICTFP : flag = Flags.STRICTFP; break;
1.2808 + case MONKEYS_AT : flag = Flags.ANNOTATION; break;
1.2809 + case DEFAULT : checkDefaultMethods(); flag = Flags.DEFAULT; break;
1.2810 + case ERROR : flag = 0; nextToken(); break;
1.2811 + default: break loop;
1.2812 + }
1.2813 + if ((flags & flag) != 0) error(token.pos, "repeated.modifier");
1.2814 + lastPos = token.pos;
1.2815 + nextToken();
1.2816 + if (flag == Flags.ANNOTATION) {
1.2817 + checkAnnotations();
1.2818 + if (token.kind != INTERFACE) {
1.2819 + JCAnnotation ann = annotation(lastPos, Tag.ANNOTATION);
1.2820 + // if first modifier is an annotation, set pos to annotation's.
1.2821 + if (flags == 0 && annotations.isEmpty())
1.2822 + pos = ann.pos;
1.2823 + annotations.append(ann);
1.2824 + flag = 0;
1.2825 + }
1.2826 + }
1.2827 + flags |= flag;
1.2828 + }
1.2829 + switch (token.kind) {
1.2830 + case ENUM: flags |= Flags.ENUM; break;
1.2831 + case INTERFACE: flags |= Flags.INTERFACE; break;
1.2832 + default: break;
1.2833 + }
1.2834 +
1.2835 + /* A modifiers tree with no modifier tokens or annotations
1.2836 + * has no text position. */
1.2837 + if ((flags & (Flags.ModifierFlags | Flags.ANNOTATION)) == 0 && annotations.isEmpty())
1.2838 + pos = Position.NOPOS;
1.2839 +
1.2840 + JCModifiers mods = F.at(pos).Modifiers(flags, annotations.toList());
1.2841 + if (pos != Position.NOPOS)
1.2842 + storeEnd(mods, S.prevToken().endPos);
1.2843 + return mods;
1.2844 + }
1.2845 +
1.2846 + /** Annotation = "@" Qualident [ "(" AnnotationFieldValues ")" ]
1.2847 + *
1.2848 + * @param pos position of "@" token
1.2849 + * @param kind Whether to parse an ANNOTATION or TYPE_ANNOTATION
1.2850 + */
1.2851 + JCAnnotation annotation(int pos, Tag kind) {
1.2852 + // accept(AT); // AT consumed by caller
1.2853 + checkAnnotations();
1.2854 + if (kind == Tag.TYPE_ANNOTATION) {
1.2855 + checkTypeAnnotations();
1.2856 + }
1.2857 + JCTree ident = qualident(false);
1.2858 + List<JCExpression> fieldValues = annotationFieldValuesOpt();
1.2859 + JCAnnotation ann;
1.2860 + if (kind == Tag.ANNOTATION) {
1.2861 + ann = F.at(pos).Annotation(ident, fieldValues);
1.2862 + } else if (kind == Tag.TYPE_ANNOTATION) {
1.2863 + ann = F.at(pos).TypeAnnotation(ident, fieldValues);
1.2864 + } else {
1.2865 + throw new AssertionError("Unhandled annotation kind: " + kind);
1.2866 + }
1.2867 +
1.2868 + storeEnd(ann, S.prevToken().endPos);
1.2869 + return ann;
1.2870 + }
1.2871 +
1.2872 + List<JCExpression> annotationFieldValuesOpt() {
1.2873 + return (token.kind == LPAREN) ? annotationFieldValues() : List.<JCExpression>nil();
1.2874 + }
1.2875 +
1.2876 + /** AnnotationFieldValues = "(" [ AnnotationFieldValue { "," AnnotationFieldValue } ] ")" */
1.2877 + List<JCExpression> annotationFieldValues() {
1.2878 + accept(LPAREN);
1.2879 + ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>();
1.2880 + if (token.kind != RPAREN) {
1.2881 + buf.append(annotationFieldValue());
1.2882 + while (token.kind == COMMA) {
1.2883 + nextToken();
1.2884 + buf.append(annotationFieldValue());
1.2885 + }
1.2886 + }
1.2887 + accept(RPAREN);
1.2888 + return buf.toList();
1.2889 + }
1.2890 +
1.2891 + /** AnnotationFieldValue = AnnotationValue
1.2892 + * | Identifier "=" AnnotationValue
1.2893 + */
1.2894 + JCExpression annotationFieldValue() {
1.2895 + if (LAX_IDENTIFIER.accepts(token.kind)) {
1.2896 + mode = EXPR;
1.2897 + JCExpression t1 = term1();
1.2898 + if (t1.hasTag(IDENT) && token.kind == EQ) {
1.2899 + int pos = token.pos;
1.2900 + accept(EQ);
1.2901 + JCExpression v = annotationValue();
1.2902 + return toP(F.at(pos).Assign(t1, v));
1.2903 + } else {
1.2904 + return t1;
1.2905 + }
1.2906 + }
1.2907 + return annotationValue();
1.2908 + }
1.2909 +
1.2910 + /* AnnotationValue = ConditionalExpression
1.2911 + * | Annotation
1.2912 + * | "{" [ AnnotationValue { "," AnnotationValue } ] [","] "}"
1.2913 + */
1.2914 + JCExpression annotationValue() {
1.2915 + int pos;
1.2916 + switch (token.kind) {
1.2917 + case MONKEYS_AT:
1.2918 + pos = token.pos;
1.2919 + nextToken();
1.2920 + return annotation(pos, Tag.ANNOTATION);
1.2921 + case LBRACE:
1.2922 + pos = token.pos;
1.2923 + accept(LBRACE);
1.2924 + ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>();
1.2925 + if (token.kind == COMMA) {
1.2926 + nextToken();
1.2927 + } else if (token.kind != RBRACE) {
1.2928 + buf.append(annotationValue());
1.2929 + while (token.kind == COMMA) {
1.2930 + nextToken();
1.2931 + if (token.kind == RBRACE) break;
1.2932 + buf.append(annotationValue());
1.2933 + }
1.2934 + }
1.2935 + accept(RBRACE);
1.2936 + return toP(F.at(pos).NewArray(null, List.<JCExpression>nil(), buf.toList()));
1.2937 + default:
1.2938 + mode = EXPR;
1.2939 + return term1();
1.2940 + }
1.2941 + }
1.2942 +
1.2943 + /** VariableDeclarators = VariableDeclarator { "," VariableDeclarator }
1.2944 + */
1.2945 + public <T extends ListBuffer<? super JCVariableDecl>> T variableDeclarators(JCModifiers mods,
1.2946 + JCExpression type,
1.2947 + T vdefs)
1.2948 + {
1.2949 + return variableDeclaratorsRest(token.pos, mods, type, ident(), false, null, vdefs);
1.2950 + }
1.2951 +
1.2952 + /** VariableDeclaratorsRest = VariableDeclaratorRest { "," VariableDeclarator }
1.2953 + * ConstantDeclaratorsRest = ConstantDeclaratorRest { "," ConstantDeclarator }
1.2954 + *
1.2955 + * @param reqInit Is an initializer always required?
1.2956 + * @param dc The documentation comment for the variable declarations, or null.
1.2957 + */
1.2958 + <T extends ListBuffer<? super JCVariableDecl>> T variableDeclaratorsRest(int pos,
1.2959 + JCModifiers mods,
1.2960 + JCExpression type,
1.2961 + Name name,
1.2962 + boolean reqInit,
1.2963 + Comment dc,
1.2964 + T vdefs)
1.2965 + {
1.2966 + vdefs.append(variableDeclaratorRest(pos, mods, type, name, reqInit, dc));
1.2967 + while (token.kind == COMMA) {
1.2968 + // All but last of multiple declarators subsume a comma
1.2969 + storeEnd((JCTree)vdefs.last(), token.endPos);
1.2970 + nextToken();
1.2971 + vdefs.append(variableDeclarator(mods, type, reqInit, dc));
1.2972 + }
1.2973 + return vdefs;
1.2974 + }
1.2975 +
1.2976 + /** VariableDeclarator = Ident VariableDeclaratorRest
1.2977 + * ConstantDeclarator = Ident ConstantDeclaratorRest
1.2978 + */
1.2979 + JCVariableDecl variableDeclarator(JCModifiers mods, JCExpression type, boolean reqInit, Comment dc) {
1.2980 + return variableDeclaratorRest(token.pos, mods, type, ident(), reqInit, dc);
1.2981 + }
1.2982 +
1.2983 + /** VariableDeclaratorRest = BracketsOpt ["=" VariableInitializer]
1.2984 + * ConstantDeclaratorRest = BracketsOpt "=" VariableInitializer
1.2985 + *
1.2986 + * @param reqInit Is an initializer always required?
1.2987 + * @param dc The documentation comment for the variable declarations, or null.
1.2988 + */
1.2989 + JCVariableDecl variableDeclaratorRest(int pos, JCModifiers mods, JCExpression type, Name name,
1.2990 + boolean reqInit, Comment dc) {
1.2991 + type = bracketsOpt(type);
1.2992 + JCExpression init = null;
1.2993 + if (token.kind == EQ) {
1.2994 + nextToken();
1.2995 + init = variableInitializer();
1.2996 + }
1.2997 + else if (reqInit) syntaxError(token.pos, "expected", EQ);
1.2998 + JCVariableDecl result =
1.2999 + toP(F.at(pos).VarDef(mods, name, type, init));
1.3000 + attach(result, dc);
1.3001 + return result;
1.3002 + }
1.3003 +
1.3004 + /** VariableDeclaratorId = Ident BracketsOpt
1.3005 + */
1.3006 + JCVariableDecl variableDeclaratorId(JCModifiers mods, JCExpression type) {
1.3007 + return variableDeclaratorId(mods, type, false);
1.3008 + }
1.3009 + //where
1.3010 + JCVariableDecl variableDeclaratorId(JCModifiers mods, JCExpression type, boolean lambdaParameter) {
1.3011 + int pos = token.pos;
1.3012 + Name name;
1.3013 + if (lambdaParameter && token.kind == UNDERSCORE) {
1.3014 + log.error(pos, "underscore.as.identifier.in.lambda");
1.3015 + name = token.name();
1.3016 + nextToken();
1.3017 + } else {
1.3018 + if (allowThisIdent) {
1.3019 + JCExpression pn = qualident(false);
1.3020 + if (pn.hasTag(Tag.IDENT) && ((JCIdent)pn).name != names._this) {
1.3021 + name = ((JCIdent)pn).name;
1.3022 + } else {
1.3023 + if ((mods.flags & Flags.VARARGS) != 0) {
1.3024 + log.error(token.pos, "varargs.and.receiver");
1.3025 + }
1.3026 + if (token.kind == LBRACKET) {
1.3027 + log.error(token.pos, "array.and.receiver");
1.3028 + }
1.3029 + return toP(F.at(pos).ReceiverVarDef(mods, pn, type));
1.3030 + }
1.3031 + } else {
1.3032 + name = ident();
1.3033 + }
1.3034 + }
1.3035 + if ((mods.flags & Flags.VARARGS) != 0 &&
1.3036 + token.kind == LBRACKET) {
1.3037 + log.error(token.pos, "varargs.and.old.array.syntax");
1.3038 + }
1.3039 + type = bracketsOpt(type);
1.3040 + return toP(F.at(pos).VarDef(mods, name, type, null));
1.3041 + }
1.3042 +
1.3043 + /** Resources = Resource { ";" Resources }
1.3044 + */
1.3045 + List<JCTree> resources() {
1.3046 + ListBuffer<JCTree> defs = new ListBuffer<JCTree>();
1.3047 + defs.append(resource());
1.3048 + while (token.kind == SEMI) {
1.3049 + // All but last of multiple declarators must subsume a semicolon
1.3050 + storeEnd(defs.last(), token.endPos);
1.3051 + int semiColonPos = token.pos;
1.3052 + nextToken();
1.3053 + if (token.kind == RPAREN) { // Optional trailing semicolon
1.3054 + // after last resource
1.3055 + break;
1.3056 + }
1.3057 + defs.append(resource());
1.3058 + }
1.3059 + return defs.toList();
1.3060 + }
1.3061 +
1.3062 + /** Resource = VariableModifiersOpt Type VariableDeclaratorId = Expression
1.3063 + */
1.3064 + protected JCTree resource() {
1.3065 + JCModifiers optFinal = optFinal(Flags.FINAL);
1.3066 + JCExpression type = parseType();
1.3067 + int pos = token.pos;
1.3068 + Name ident = ident();
1.3069 + return variableDeclaratorRest(pos, optFinal, type, ident, true, null);
1.3070 + }
1.3071 +
1.3072 + /** CompilationUnit = [ { "@" Annotation } PACKAGE Qualident ";"] {ImportDeclaration} {TypeDeclaration}
1.3073 + */
1.3074 + public JCTree.JCCompilationUnit parseCompilationUnit() {
1.3075 + Token firstToken = token;
1.3076 + JCExpression pid = null;
1.3077 + JCModifiers mods = null;
1.3078 + boolean consumedToplevelDoc = false;
1.3079 + boolean seenImport = false;
1.3080 + boolean seenPackage = false;
1.3081 + List<JCAnnotation> packageAnnotations = List.nil();
1.3082 + if (token.kind == MONKEYS_AT)
1.3083 + mods = modifiersOpt();
1.3084 +
1.3085 + if (token.kind == PACKAGE) {
1.3086 + seenPackage = true;
1.3087 + if (mods != null) {
1.3088 + checkNoMods(mods.flags);
1.3089 + packageAnnotations = mods.annotations;
1.3090 + mods = null;
1.3091 + }
1.3092 + nextToken();
1.3093 + pid = qualident(false);
1.3094 + accept(SEMI);
1.3095 + }
1.3096 + ListBuffer<JCTree> defs = new ListBuffer<JCTree>();
1.3097 + boolean checkForImports = true;
1.3098 + boolean firstTypeDecl = true;
1.3099 + while (token.kind != EOF) {
1.3100 + if (token.pos > 0 && token.pos <= endPosTable.errorEndPos) {
1.3101 + // error recovery
1.3102 + skip(checkForImports, false, false, false);
1.3103 + if (token.kind == EOF)
1.3104 + break;
1.3105 + }
1.3106 + if (checkForImports && mods == null && token.kind == IMPORT) {
1.3107 + seenImport = true;
1.3108 + defs.append(importDeclaration());
1.3109 + } else {
1.3110 + Comment docComment = token.comment(CommentStyle.JAVADOC);
1.3111 + if (firstTypeDecl && !seenImport && !seenPackage) {
1.3112 + docComment = firstToken.comment(CommentStyle.JAVADOC);
1.3113 + consumedToplevelDoc = true;
1.3114 + }
1.3115 + JCTree def = typeDeclaration(mods, docComment);
1.3116 + if (def instanceof JCExpressionStatement)
1.3117 + def = ((JCExpressionStatement)def).expr;
1.3118 + defs.append(def);
1.3119 + if (def instanceof JCClassDecl)
1.3120 + checkForImports = false;
1.3121 + mods = null;
1.3122 + firstTypeDecl = false;
1.3123 + }
1.3124 + }
1.3125 + JCTree.JCCompilationUnit toplevel = F.at(firstToken.pos).TopLevel(packageAnnotations, pid, defs.toList());
1.3126 + if (!consumedToplevelDoc)
1.3127 + attach(toplevel, firstToken.comment(CommentStyle.JAVADOC));
1.3128 + if (defs.isEmpty())
1.3129 + storeEnd(toplevel, S.prevToken().endPos);
1.3130 + if (keepDocComments)
1.3131 + toplevel.docComments = docComments;
1.3132 + if (keepLineMap)
1.3133 + toplevel.lineMap = S.getLineMap();
1.3134 + this.endPosTable.setParser(null); // remove reference to parser
1.3135 + toplevel.endPositions = this.endPosTable;
1.3136 + return toplevel;
1.3137 + }
1.3138 +
1.3139 + /** ImportDeclaration = IMPORT [ STATIC ] Ident { "." Ident } [ "." "*" ] ";"
1.3140 + */
1.3141 + JCTree importDeclaration() {
1.3142 + int pos = token.pos;
1.3143 + nextToken();
1.3144 + boolean importStatic = false;
1.3145 + if (token.kind == STATIC) {
1.3146 + checkStaticImports();
1.3147 + importStatic = true;
1.3148 + nextToken();
1.3149 + }
1.3150 + JCExpression pid = toP(F.at(token.pos).Ident(ident()));
1.3151 + do {
1.3152 + int pos1 = token.pos;
1.3153 + accept(DOT);
1.3154 + if (token.kind == STAR) {
1.3155 + pid = to(F.at(pos1).Select(pid, names.asterisk));
1.3156 + nextToken();
1.3157 + break;
1.3158 + } else {
1.3159 + pid = toP(F.at(pos1).Select(pid, ident()));
1.3160 + }
1.3161 + } while (token.kind == DOT);
1.3162 + accept(SEMI);
1.3163 + return toP(F.at(pos).Import(pid, importStatic));
1.3164 + }
1.3165 +
1.3166 + /** TypeDeclaration = ClassOrInterfaceOrEnumDeclaration
1.3167 + * | ";"
1.3168 + */
1.3169 + JCTree typeDeclaration(JCModifiers mods, Comment docComment) {
1.3170 + int pos = token.pos;
1.3171 + if (mods == null && token.kind == SEMI) {
1.3172 + nextToken();
1.3173 + return toP(F.at(pos).Skip());
1.3174 + } else {
1.3175 + return classOrInterfaceOrEnumDeclaration(modifiersOpt(mods), docComment);
1.3176 + }
1.3177 + }
1.3178 +
1.3179 + /** ClassOrInterfaceOrEnumDeclaration = ModifiersOpt
1.3180 + * (ClassDeclaration | InterfaceDeclaration | EnumDeclaration)
1.3181 + * @param mods Any modifiers starting the class or interface declaration
1.3182 + * @param dc The documentation comment for the class, or null.
1.3183 + */
1.3184 + JCStatement classOrInterfaceOrEnumDeclaration(JCModifiers mods, Comment dc) {
1.3185 + if (token.kind == CLASS) {
1.3186 + return classDeclaration(mods, dc);
1.3187 + } else if (token.kind == INTERFACE) {
1.3188 + return interfaceDeclaration(mods, dc);
1.3189 + } else if (allowEnums) {
1.3190 + if (token.kind == ENUM) {
1.3191 + return enumDeclaration(mods, dc);
1.3192 + } else {
1.3193 + int pos = token.pos;
1.3194 + List<JCTree> errs;
1.3195 + if (LAX_IDENTIFIER.accepts(token.kind)) {
1.3196 + errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident())));
1.3197 + setErrorEndPos(token.pos);
1.3198 + } else {
1.3199 + errs = List.<JCTree>of(mods);
1.3200 + }
1.3201 + return toP(F.Exec(syntaxError(pos, errs, "expected3",
1.3202 + CLASS, INTERFACE, ENUM)));
1.3203 + }
1.3204 + } else {
1.3205 + if (token.kind == ENUM) {
1.3206 + error(token.pos, "enums.not.supported.in.source", source.name);
1.3207 + allowEnums = true;
1.3208 + return enumDeclaration(mods, dc);
1.3209 + }
1.3210 + int pos = token.pos;
1.3211 + List<JCTree> errs;
1.3212 + if (LAX_IDENTIFIER.accepts(token.kind)) {
1.3213 + errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident())));
1.3214 + setErrorEndPos(token.pos);
1.3215 + } else {
1.3216 + errs = List.<JCTree>of(mods);
1.3217 + }
1.3218 + return toP(F.Exec(syntaxError(pos, errs, "expected2",
1.3219 + CLASS, INTERFACE)));
1.3220 + }
1.3221 + }
1.3222 +
1.3223 + /** ClassDeclaration = CLASS Ident TypeParametersOpt [EXTENDS Type]
1.3224 + * [IMPLEMENTS TypeList] ClassBody
1.3225 + * @param mods The modifiers starting the class declaration
1.3226 + * @param dc The documentation comment for the class, or null.
1.3227 + */
1.3228 + protected JCClassDecl classDeclaration(JCModifiers mods, Comment dc) {
1.3229 + int pos = token.pos;
1.3230 + accept(CLASS);
1.3231 + Name name = ident();
1.3232 +
1.3233 + List<JCTypeParameter> typarams = typeParametersOpt();
1.3234 +
1.3235 + JCExpression extending = null;
1.3236 + if (token.kind == EXTENDS) {
1.3237 + nextToken();
1.3238 + extending = parseType();
1.3239 + }
1.3240 + List<JCExpression> implementing = List.nil();
1.3241 + if (token.kind == IMPLEMENTS) {
1.3242 + nextToken();
1.3243 + implementing = typeList();
1.3244 + }
1.3245 + List<JCTree> defs = classOrInterfaceBody(name, false);
1.3246 + JCClassDecl result = toP(F.at(pos).ClassDef(
1.3247 + mods, name, typarams, extending, implementing, defs));
1.3248 + attach(result, dc);
1.3249 + return result;
1.3250 + }
1.3251 +
1.3252 + /** InterfaceDeclaration = INTERFACE Ident TypeParametersOpt
1.3253 + * [EXTENDS TypeList] InterfaceBody
1.3254 + * @param mods The modifiers starting the interface declaration
1.3255 + * @param dc The documentation comment for the interface, or null.
1.3256 + */
1.3257 + protected JCClassDecl interfaceDeclaration(JCModifiers mods, Comment dc) {
1.3258 + int pos = token.pos;
1.3259 + accept(INTERFACE);
1.3260 + Name name = ident();
1.3261 +
1.3262 + List<JCTypeParameter> typarams = typeParametersOpt();
1.3263 +
1.3264 + List<JCExpression> extending = List.nil();
1.3265 + if (token.kind == EXTENDS) {
1.3266 + nextToken();
1.3267 + extending = typeList();
1.3268 + }
1.3269 + List<JCTree> defs = classOrInterfaceBody(name, true);
1.3270 + JCClassDecl result = toP(F.at(pos).ClassDef(
1.3271 + mods, name, typarams, null, extending, defs));
1.3272 + attach(result, dc);
1.3273 + return result;
1.3274 + }
1.3275 +
1.3276 + /** EnumDeclaration = ENUM Ident [IMPLEMENTS TypeList] EnumBody
1.3277 + * @param mods The modifiers starting the enum declaration
1.3278 + * @param dc The documentation comment for the enum, or null.
1.3279 + */
1.3280 + protected JCClassDecl enumDeclaration(JCModifiers mods, Comment dc) {
1.3281 + int pos = token.pos;
1.3282 + accept(ENUM);
1.3283 + Name name = ident();
1.3284 +
1.3285 + List<JCExpression> implementing = List.nil();
1.3286 + if (token.kind == IMPLEMENTS) {
1.3287 + nextToken();
1.3288 + implementing = typeList();
1.3289 + }
1.3290 +
1.3291 + List<JCTree> defs = enumBody(name);
1.3292 + mods.flags |= Flags.ENUM;
1.3293 + JCClassDecl result = toP(F.at(pos).
1.3294 + ClassDef(mods, name, List.<JCTypeParameter>nil(),
1.3295 + null, implementing, defs));
1.3296 + attach(result, dc);
1.3297 + return result;
1.3298 + }
1.3299 +
1.3300 + /** EnumBody = "{" { EnumeratorDeclarationList } [","]
1.3301 + * [ ";" {ClassBodyDeclaration} ] "}"
1.3302 + */
1.3303 + List<JCTree> enumBody(Name enumName) {
1.3304 + accept(LBRACE);
1.3305 + ListBuffer<JCTree> defs = new ListBuffer<JCTree>();
1.3306 + if (token.kind == COMMA) {
1.3307 + nextToken();
1.3308 + } else if (token.kind != RBRACE && token.kind != SEMI) {
1.3309 + defs.append(enumeratorDeclaration(enumName));
1.3310 + while (token.kind == COMMA) {
1.3311 + nextToken();
1.3312 + if (token.kind == RBRACE || token.kind == SEMI) break;
1.3313 + defs.append(enumeratorDeclaration(enumName));
1.3314 + }
1.3315 + if (token.kind != SEMI && token.kind != RBRACE) {
1.3316 + defs.append(syntaxError(token.pos, "expected3",
1.3317 + COMMA, RBRACE, SEMI));
1.3318 + nextToken();
1.3319 + }
1.3320 + }
1.3321 + if (token.kind == SEMI) {
1.3322 + nextToken();
1.3323 + while (token.kind != RBRACE && token.kind != EOF) {
1.3324 + defs.appendList(classOrInterfaceBodyDeclaration(enumName,
1.3325 + false));
1.3326 + if (token.pos <= endPosTable.errorEndPos) {
1.3327 + // error recovery
1.3328 + skip(false, true, true, false);
1.3329 + }
1.3330 + }
1.3331 + }
1.3332 + accept(RBRACE);
1.3333 + return defs.toList();
1.3334 + }
1.3335 +
1.3336 + /** EnumeratorDeclaration = AnnotationsOpt [TypeArguments] IDENTIFIER [ Arguments ] [ "{" ClassBody "}" ]
1.3337 + */
1.3338 + JCTree enumeratorDeclaration(Name enumName) {
1.3339 + Comment dc = token.comment(CommentStyle.JAVADOC);
1.3340 + int flags = Flags.PUBLIC|Flags.STATIC|Flags.FINAL|Flags.ENUM;
1.3341 + if (token.deprecatedFlag()) {
1.3342 + flags |= Flags.DEPRECATED;
1.3343 + }
1.3344 + int pos = token.pos;
1.3345 + List<JCAnnotation> annotations = annotationsOpt(Tag.ANNOTATION);
1.3346 + JCModifiers mods = F.at(annotations.isEmpty() ? Position.NOPOS : pos).Modifiers(flags, annotations);
1.3347 + List<JCExpression> typeArgs = typeArgumentsOpt();
1.3348 + int identPos = token.pos;
1.3349 + Name name = ident();
1.3350 + int createPos = token.pos;
1.3351 + List<JCExpression> args = (token.kind == LPAREN)
1.3352 + ? arguments() : List.<JCExpression>nil();
1.3353 + JCClassDecl body = null;
1.3354 + if (token.kind == LBRACE) {
1.3355 + JCModifiers mods1 = F.at(Position.NOPOS).Modifiers(Flags.ENUM | Flags.STATIC);
1.3356 + List<JCTree> defs = classOrInterfaceBody(names.empty, false);
1.3357 + body = toP(F.at(identPos).AnonymousClassDef(mods1, defs));
1.3358 + }
1.3359 + if (args.isEmpty() && body == null)
1.3360 + createPos = identPos;
1.3361 + JCIdent ident = F.at(identPos).Ident(enumName);
1.3362 + JCNewClass create = F.at(createPos).NewClass(null, typeArgs, ident, args, body);
1.3363 + if (createPos != identPos)
1.3364 + storeEnd(create, S.prevToken().endPos);
1.3365 + ident = F.at(identPos).Ident(enumName);
1.3366 + JCTree result = toP(F.at(pos).VarDef(mods, name, ident, create));
1.3367 + attach(result, dc);
1.3368 + return result;
1.3369 + }
1.3370 +
1.3371 + /** TypeList = Type {"," Type}
1.3372 + */
1.3373 + List<JCExpression> typeList() {
1.3374 + ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>();
1.3375 + ts.append(parseType());
1.3376 + while (token.kind == COMMA) {
1.3377 + nextToken();
1.3378 + ts.append(parseType());
1.3379 + }
1.3380 + return ts.toList();
1.3381 + }
1.3382 +
1.3383 + /** ClassBody = "{" {ClassBodyDeclaration} "}"
1.3384 + * InterfaceBody = "{" {InterfaceBodyDeclaration} "}"
1.3385 + */
1.3386 + List<JCTree> classOrInterfaceBody(Name className, boolean isInterface) {
1.3387 + accept(LBRACE);
1.3388 + if (token.pos <= endPosTable.errorEndPos) {
1.3389 + // error recovery
1.3390 + skip(false, true, false, false);
1.3391 + if (token.kind == LBRACE)
1.3392 + nextToken();
1.3393 + }
1.3394 + ListBuffer<JCTree> defs = new ListBuffer<JCTree>();
1.3395 + while (token.kind != RBRACE && token.kind != EOF) {
1.3396 + defs.appendList(classOrInterfaceBodyDeclaration(className, isInterface));
1.3397 + if (token.pos <= endPosTable.errorEndPos) {
1.3398 + // error recovery
1.3399 + skip(false, true, true, false);
1.3400 + }
1.3401 + }
1.3402 + accept(RBRACE);
1.3403 + return defs.toList();
1.3404 + }
1.3405 +
1.3406 + /** ClassBodyDeclaration =
1.3407 + * ";"
1.3408 + * | [STATIC] Block
1.3409 + * | ModifiersOpt
1.3410 + * ( Type Ident
1.3411 + * ( VariableDeclaratorsRest ";" | MethodDeclaratorRest )
1.3412 + * | VOID Ident VoidMethodDeclaratorRest
1.3413 + * | TypeParameters [Annotations]
1.3414 + * ( Type Ident MethodDeclaratorRest
1.3415 + * | VOID Ident VoidMethodDeclaratorRest
1.3416 + * )
1.3417 + * | Ident ConstructorDeclaratorRest
1.3418 + * | TypeParameters Ident ConstructorDeclaratorRest
1.3419 + * | ClassOrInterfaceOrEnumDeclaration
1.3420 + * )
1.3421 + * InterfaceBodyDeclaration =
1.3422 + * ";"
1.3423 + * | ModifiersOpt
1.3424 + * ( Type Ident
1.3425 + * ( ConstantDeclaratorsRest ";" | MethodDeclaratorRest )
1.3426 + * | VOID Ident MethodDeclaratorRest
1.3427 + * | TypeParameters [Annotations]
1.3428 + * ( Type Ident MethodDeclaratorRest
1.3429 + * | VOID Ident VoidMethodDeclaratorRest
1.3430 + * )
1.3431 + * | ClassOrInterfaceOrEnumDeclaration
1.3432 + * )
1.3433 + *
1.3434 + */
1.3435 + protected List<JCTree> classOrInterfaceBodyDeclaration(Name className, boolean isInterface) {
1.3436 + if (token.kind == SEMI) {
1.3437 + nextToken();
1.3438 + return List.<JCTree>nil();
1.3439 + } else {
1.3440 + Comment dc = token.comment(CommentStyle.JAVADOC);
1.3441 + int pos = token.pos;
1.3442 + JCModifiers mods = modifiersOpt();
1.3443 + if (token.kind == CLASS ||
1.3444 + token.kind == INTERFACE ||
1.3445 + allowEnums && token.kind == ENUM) {
1.3446 + return List.<JCTree>of(classOrInterfaceOrEnumDeclaration(mods, dc));
1.3447 + } else if (token.kind == LBRACE && !isInterface &&
1.3448 + (mods.flags & Flags.StandardFlags & ~Flags.STATIC) == 0 &&
1.3449 + mods.annotations.isEmpty()) {
1.3450 + return List.<JCTree>of(block(pos, mods.flags));
1.3451 + } else {
1.3452 + pos = token.pos;
1.3453 + List<JCTypeParameter> typarams = typeParametersOpt();
1.3454 + // if there are type parameters but no modifiers, save the start
1.3455 + // position of the method in the modifiers.
1.3456 + if (typarams.nonEmpty() && mods.pos == Position.NOPOS) {
1.3457 + mods.pos = pos;
1.3458 + storeEnd(mods, pos);
1.3459 + }
1.3460 + List<JCAnnotation> annosAfterParams = annotationsOpt(Tag.ANNOTATION);
1.3461 +
1.3462 + if (annosAfterParams.nonEmpty()) {
1.3463 + checkAnnotationsAfterTypeParams(annosAfterParams.head.pos);
1.3464 + mods.annotations = mods.annotations.appendList(annosAfterParams);
1.3465 + if (mods.pos == Position.NOPOS)
1.3466 + mods.pos = mods.annotations.head.pos;
1.3467 + }
1.3468 +
1.3469 + Token tk = token;
1.3470 + pos = token.pos;
1.3471 + JCExpression type;
1.3472 + boolean isVoid = token.kind == VOID;
1.3473 + if (isVoid) {
1.3474 + type = to(F.at(pos).TypeIdent(TypeTag.VOID));
1.3475 + nextToken();
1.3476 + } else {
1.3477 + // method returns types are un-annotated types
1.3478 + type = unannotatedType();
1.3479 + }
1.3480 + if (token.kind == LPAREN && !isInterface && type.hasTag(IDENT)) {
1.3481 + if (isInterface || tk.name() != className)
1.3482 + error(pos, "invalid.meth.decl.ret.type.req");
1.3483 + else if (annosAfterParams.nonEmpty())
1.3484 + illegal(annosAfterParams.head.pos);
1.3485 + return List.of(methodDeclaratorRest(
1.3486 + pos, mods, null, names.init, typarams,
1.3487 + isInterface, true, dc));
1.3488 + } else {
1.3489 + pos = token.pos;
1.3490 + Name name = ident();
1.3491 + if (token.kind == LPAREN) {
1.3492 + return List.of(methodDeclaratorRest(
1.3493 + pos, mods, type, name, typarams,
1.3494 + isInterface, isVoid, dc));
1.3495 + } else if (!isVoid && typarams.isEmpty()) {
1.3496 + List<JCTree> defs =
1.3497 + variableDeclaratorsRest(pos, mods, type, name, isInterface, dc,
1.3498 + new ListBuffer<JCTree>()).toList();
1.3499 + storeEnd(defs.last(), token.endPos);
1.3500 + accept(SEMI);
1.3501 + return defs;
1.3502 + } else {
1.3503 + pos = token.pos;
1.3504 + List<JCTree> err = isVoid
1.3505 + ? List.<JCTree>of(toP(F.at(pos).MethodDef(mods, name, type, typarams,
1.3506 + List.<JCVariableDecl>nil(), List.<JCExpression>nil(), null, null)))
1.3507 + : null;
1.3508 + return List.<JCTree>of(syntaxError(token.pos, err, "expected", LPAREN));
1.3509 + }
1.3510 + }
1.3511 + }
1.3512 + }
1.3513 + }
1.3514 +
1.3515 + /** MethodDeclaratorRest =
1.3516 + * FormalParameters BracketsOpt [THROWS TypeList] ( MethodBody | [DEFAULT AnnotationValue] ";")
1.3517 + * VoidMethodDeclaratorRest =
1.3518 + * FormalParameters [THROWS TypeList] ( MethodBody | ";")
1.3519 + * ConstructorDeclaratorRest =
1.3520 + * "(" FormalParameterListOpt ")" [THROWS TypeList] MethodBody
1.3521 + */
1.3522 + protected JCTree methodDeclaratorRest(int pos,
1.3523 + JCModifiers mods,
1.3524 + JCExpression type,
1.3525 + Name name,
1.3526 + List<JCTypeParameter> typarams,
1.3527 + boolean isInterface, boolean isVoid,
1.3528 + Comment dc) {
1.3529 + if (isInterface && (mods.flags & Flags.STATIC) != 0) {
1.3530 + checkStaticInterfaceMethods();
1.3531 + }
1.3532 + JCVariableDecl prevReceiverParam = this.receiverParam;
1.3533 + try {
1.3534 + this.receiverParam = null;
1.3535 + // Parsing formalParameters sets the receiverParam, if present
1.3536 + List<JCVariableDecl> params = formalParameters();
1.3537 + if (!isVoid) type = bracketsOpt(type);
1.3538 + List<JCExpression> thrown = List.nil();
1.3539 + if (token.kind == THROWS) {
1.3540 + nextToken();
1.3541 + thrown = qualidentList();
1.3542 + }
1.3543 + JCBlock body = null;
1.3544 + JCExpression defaultValue;
1.3545 + if (token.kind == LBRACE) {
1.3546 + body = block();
1.3547 + defaultValue = null;
1.3548 + } else {
1.3549 + if (token.kind == DEFAULT) {
1.3550 + accept(DEFAULT);
1.3551 + defaultValue = annotationValue();
1.3552 + } else {
1.3553 + defaultValue = null;
1.3554 + }
1.3555 + accept(SEMI);
1.3556 + if (token.pos <= endPosTable.errorEndPos) {
1.3557 + // error recovery
1.3558 + skip(false, true, false, false);
1.3559 + if (token.kind == LBRACE) {
1.3560 + body = block();
1.3561 + }
1.3562 + }
1.3563 + }
1.3564 +
1.3565 + JCMethodDecl result =
1.3566 + toP(F.at(pos).MethodDef(mods, name, type, typarams,
1.3567 + receiverParam, params, thrown,
1.3568 + body, defaultValue));
1.3569 + attach(result, dc);
1.3570 + return result;
1.3571 + } finally {
1.3572 + this.receiverParam = prevReceiverParam;
1.3573 + }
1.3574 + }
1.3575 +
1.3576 + /** QualidentList = [Annotations] Qualident {"," [Annotations] Qualident}
1.3577 + */
1.3578 + List<JCExpression> qualidentList() {
1.3579 + ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>();
1.3580 +
1.3581 + List<JCAnnotation> typeAnnos = typeAnnotationsOpt();
1.3582 + JCExpression qi = qualident(true);
1.3583 + if (!typeAnnos.isEmpty()) {
1.3584 + JCExpression at = insertAnnotationsToMostInner(qi, typeAnnos, false);
1.3585 + ts.append(at);
1.3586 + } else {
1.3587 + ts.append(qi);
1.3588 + }
1.3589 + while (token.kind == COMMA) {
1.3590 + nextToken();
1.3591 +
1.3592 + typeAnnos = typeAnnotationsOpt();
1.3593 + qi = qualident(true);
1.3594 + if (!typeAnnos.isEmpty()) {
1.3595 + JCExpression at = insertAnnotationsToMostInner(qi, typeAnnos, false);
1.3596 + ts.append(at);
1.3597 + } else {
1.3598 + ts.append(qi);
1.3599 + }
1.3600 + }
1.3601 + return ts.toList();
1.3602 + }
1.3603 +
1.3604 + /**
1.3605 + * {@literal
1.3606 + * TypeParametersOpt = ["<" TypeParameter {"," TypeParameter} ">"]
1.3607 + * }
1.3608 + */
1.3609 + List<JCTypeParameter> typeParametersOpt() {
1.3610 + if (token.kind == LT) {
1.3611 + checkGenerics();
1.3612 + ListBuffer<JCTypeParameter> typarams = new ListBuffer<JCTypeParameter>();
1.3613 + nextToken();
1.3614 + typarams.append(typeParameter());
1.3615 + while (token.kind == COMMA) {
1.3616 + nextToken();
1.3617 + typarams.append(typeParameter());
1.3618 + }
1.3619 + accept(GT);
1.3620 + return typarams.toList();
1.3621 + } else {
1.3622 + return List.nil();
1.3623 + }
1.3624 + }
1.3625 +
1.3626 + /**
1.3627 + * {@literal
1.3628 + * TypeParameter = [Annotations] TypeVariable [TypeParameterBound]
1.3629 + * TypeParameterBound = EXTENDS Type {"&" Type}
1.3630 + * TypeVariable = Ident
1.3631 + * }
1.3632 + */
1.3633 + JCTypeParameter typeParameter() {
1.3634 + int pos = token.pos;
1.3635 + List<JCAnnotation> annos = typeAnnotationsOpt();
1.3636 + Name name = ident();
1.3637 + ListBuffer<JCExpression> bounds = new ListBuffer<JCExpression>();
1.3638 + if (token.kind == EXTENDS) {
1.3639 + nextToken();
1.3640 + bounds.append(parseType());
1.3641 + while (token.kind == AMP) {
1.3642 + nextToken();
1.3643 + bounds.append(parseType());
1.3644 + }
1.3645 + }
1.3646 + return toP(F.at(pos).TypeParameter(name, bounds.toList(), annos));
1.3647 + }
1.3648 +
1.3649 + /** FormalParameters = "(" [ FormalParameterList ] ")"
1.3650 + * FormalParameterList = [ FormalParameterListNovarargs , ] LastFormalParameter
1.3651 + * FormalParameterListNovarargs = [ FormalParameterListNovarargs , ] FormalParameter
1.3652 + */
1.3653 + List<JCVariableDecl> formalParameters() {
1.3654 + return formalParameters(false);
1.3655 + }
1.3656 + List<JCVariableDecl> formalParameters(boolean lambdaParameters) {
1.3657 + ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>();
1.3658 + JCVariableDecl lastParam;
1.3659 + accept(LPAREN);
1.3660 + if (token.kind != RPAREN) {
1.3661 + this.allowThisIdent = true;
1.3662 + lastParam = formalParameter(lambdaParameters);
1.3663 + if (lastParam.nameexpr != null) {
1.3664 + this.receiverParam = lastParam;
1.3665 + } else {
1.3666 + params.append(lastParam);
1.3667 + }
1.3668 + this.allowThisIdent = false;
1.3669 + while ((lastParam.mods.flags & Flags.VARARGS) == 0 && token.kind == COMMA) {
1.3670 + nextToken();
1.3671 + params.append(lastParam = formalParameter(lambdaParameters));
1.3672 + }
1.3673 + }
1.3674 + accept(RPAREN);
1.3675 + return params.toList();
1.3676 + }
1.3677 +
1.3678 + List<JCVariableDecl> implicitParameters(boolean hasParens) {
1.3679 + if (hasParens) {
1.3680 + accept(LPAREN);
1.3681 + }
1.3682 + ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>();
1.3683 + if (token.kind != RPAREN && token.kind != ARROW) {
1.3684 + params.append(implicitParameter());
1.3685 + while (token.kind == COMMA) {
1.3686 + nextToken();
1.3687 + params.append(implicitParameter());
1.3688 + }
1.3689 + }
1.3690 + if (hasParens) {
1.3691 + accept(RPAREN);
1.3692 + }
1.3693 + return params.toList();
1.3694 + }
1.3695 +
1.3696 + JCModifiers optFinal(long flags) {
1.3697 + JCModifiers mods = modifiersOpt();
1.3698 + checkNoMods(mods.flags & ~(Flags.FINAL | Flags.DEPRECATED));
1.3699 + mods.flags |= flags;
1.3700 + return mods;
1.3701 + }
1.3702 +
1.3703 + /**
1.3704 + * Inserts the annotations (and possibly a new array level)
1.3705 + * to the left-most type in an array or nested type.
1.3706 + *
1.3707 + * When parsing a type like {@code @B Outer.Inner @A []}, the
1.3708 + * {@code @A} annotation should target the array itself, while
1.3709 + * {@code @B} targets the nested type {@code Outer}.
1.3710 + *
1.3711 + * Currently the parser parses the annotation first, then
1.3712 + * the array, and then inserts the annotation to the left-most
1.3713 + * nested type.
1.3714 + *
1.3715 + * When {@code createNewLevel} is true, then a new array
1.3716 + * level is inserted as the most inner type, and have the
1.3717 + * annotations target it. This is useful in the case of
1.3718 + * varargs, e.g. {@code String @A [] @B ...}, as the parser
1.3719 + * first parses the type {@code String @A []} then inserts
1.3720 + * a new array level with {@code @B} annotation.
1.3721 + */
1.3722 + private JCExpression insertAnnotationsToMostInner(
1.3723 + JCExpression type, List<JCAnnotation> annos,
1.3724 + boolean createNewLevel) {
1.3725 + int origEndPos = getEndPos(type);
1.3726 + JCExpression mostInnerType = type;
1.3727 + JCArrayTypeTree mostInnerArrayType = null;
1.3728 + while (TreeInfo.typeIn(mostInnerType).hasTag(TYPEARRAY)) {
1.3729 + mostInnerArrayType = (JCArrayTypeTree) TreeInfo.typeIn(mostInnerType);
1.3730 + mostInnerType = mostInnerArrayType.elemtype;
1.3731 + }
1.3732 +
1.3733 + if (createNewLevel) {
1.3734 + mostInnerType = to(F.at(token.pos).TypeArray(mostInnerType));
1.3735 + }
1.3736 +
1.3737 + JCExpression mostInnerTypeToReturn = mostInnerType;
1.3738 + if (annos.nonEmpty()) {
1.3739 + JCExpression lastToModify = mostInnerType;
1.3740 +
1.3741 + while (TreeInfo.typeIn(mostInnerType).hasTag(SELECT) ||
1.3742 + TreeInfo.typeIn(mostInnerType).hasTag(TYPEAPPLY)) {
1.3743 + while (TreeInfo.typeIn(mostInnerType).hasTag(SELECT)) {
1.3744 + lastToModify = mostInnerType;
1.3745 + mostInnerType = ((JCFieldAccess) TreeInfo.typeIn(mostInnerType)).getExpression();
1.3746 + }
1.3747 + while (TreeInfo.typeIn(mostInnerType).hasTag(TYPEAPPLY)) {
1.3748 + lastToModify = mostInnerType;
1.3749 + mostInnerType = ((JCTypeApply) TreeInfo.typeIn(mostInnerType)).clazz;
1.3750 + }
1.3751 + }
1.3752 +
1.3753 + mostInnerType = F.at(annos.head.pos).AnnotatedType(annos, mostInnerType);
1.3754 +
1.3755 + if (TreeInfo.typeIn(lastToModify).hasTag(TYPEAPPLY)) {
1.3756 + ((JCTypeApply) TreeInfo.typeIn(lastToModify)).clazz = mostInnerType;
1.3757 + } else if (TreeInfo.typeIn(lastToModify).hasTag(SELECT)) {
1.3758 + ((JCFieldAccess) TreeInfo.typeIn(lastToModify)).selected = mostInnerType;
1.3759 + } else {
1.3760 + // We never saw a SELECT or TYPEAPPLY, return the annotated type.
1.3761 + mostInnerTypeToReturn = mostInnerType;
1.3762 + }
1.3763 + }
1.3764 +
1.3765 + if (mostInnerArrayType == null) {
1.3766 + return mostInnerTypeToReturn;
1.3767 + } else {
1.3768 + mostInnerArrayType.elemtype = mostInnerTypeToReturn;
1.3769 + storeEnd(type, origEndPos);
1.3770 + return type;
1.3771 + }
1.3772 + }
1.3773 +
1.3774 + /** FormalParameter = { FINAL | '@' Annotation } Type VariableDeclaratorId
1.3775 + * LastFormalParameter = { FINAL | '@' Annotation } Type '...' Ident | FormalParameter
1.3776 + */
1.3777 + protected JCVariableDecl formalParameter() {
1.3778 + return formalParameter(false);
1.3779 + }
1.3780 + protected JCVariableDecl formalParameter(boolean lambdaParameter) {
1.3781 + JCModifiers mods = optFinal(Flags.PARAMETER);
1.3782 + // need to distinguish between vararg annos and array annos
1.3783 + // look at typeAnnotationsPushedBack comment
1.3784 + this.permitTypeAnnotationsPushBack = true;
1.3785 + JCExpression type = parseType();
1.3786 + this.permitTypeAnnotationsPushBack = false;
1.3787 +
1.3788 + if (token.kind == ELLIPSIS) {
1.3789 + List<JCAnnotation> varargsAnnos = typeAnnotationsPushedBack;
1.3790 + typeAnnotationsPushedBack = List.nil();
1.3791 + checkVarargs();
1.3792 + mods.flags |= Flags.VARARGS;
1.3793 + // insert var arg type annotations
1.3794 + type = insertAnnotationsToMostInner(type, varargsAnnos, true);
1.3795 + nextToken();
1.3796 + } else {
1.3797 + // if not a var arg, then typeAnnotationsPushedBack should be null
1.3798 + if (typeAnnotationsPushedBack.nonEmpty()) {
1.3799 + reportSyntaxError(typeAnnotationsPushedBack.head.pos,
1.3800 + "illegal.start.of.type");
1.3801 + }
1.3802 + typeAnnotationsPushedBack = List.nil();
1.3803 + }
1.3804 + return variableDeclaratorId(mods, type, lambdaParameter);
1.3805 + }
1.3806 +
1.3807 + protected JCVariableDecl implicitParameter() {
1.3808 + JCModifiers mods = F.at(token.pos).Modifiers(Flags.PARAMETER);
1.3809 + return variableDeclaratorId(mods, null, true);
1.3810 + }
1.3811 +
1.3812 +/* ---------- auxiliary methods -------------- */
1.3813 +
1.3814 + void error(int pos, String key, Object ... args) {
1.3815 + log.error(DiagnosticFlag.SYNTAX, pos, key, args);
1.3816 + }
1.3817 +
1.3818 + void error(DiagnosticPosition pos, String key, Object ... args) {
1.3819 + log.error(DiagnosticFlag.SYNTAX, pos, key, args);
1.3820 + }
1.3821 +
1.3822 + void warning(int pos, String key, Object ... args) {
1.3823 + log.warning(pos, key, args);
1.3824 + }
1.3825 +
1.3826 + /** Check that given tree is a legal expression statement.
1.3827 + */
1.3828 + protected JCExpression checkExprStat(JCExpression t) {
1.3829 + if (!TreeInfo.isExpressionStatement(t)) {
1.3830 + JCExpression ret = F.at(t.pos).Erroneous(List.<JCTree>of(t));
1.3831 + error(ret, "not.stmt");
1.3832 + return ret;
1.3833 + } else {
1.3834 + return t;
1.3835 + }
1.3836 + }
1.3837 +
1.3838 + /** Return precedence of operator represented by token,
1.3839 + * -1 if token is not a binary operator. @see TreeInfo.opPrec
1.3840 + */
1.3841 + static int prec(TokenKind token) {
1.3842 + JCTree.Tag oc = optag(token);
1.3843 + return (oc != NO_TAG) ? TreeInfo.opPrec(oc) : -1;
1.3844 + }
1.3845 +
1.3846 + /**
1.3847 + * Return the lesser of two positions, making allowance for either one
1.3848 + * being unset.
1.3849 + */
1.3850 + static int earlier(int pos1, int pos2) {
1.3851 + if (pos1 == Position.NOPOS)
1.3852 + return pos2;
1.3853 + if (pos2 == Position.NOPOS)
1.3854 + return pos1;
1.3855 + return (pos1 < pos2 ? pos1 : pos2);
1.3856 + }
1.3857 +
1.3858 + /** Return operation tag of binary operator represented by token,
1.3859 + * No_TAG if token is not a binary operator.
1.3860 + */
1.3861 + static JCTree.Tag optag(TokenKind token) {
1.3862 + switch (token) {
1.3863 + case BARBAR:
1.3864 + return OR;
1.3865 + case AMPAMP:
1.3866 + return AND;
1.3867 + case BAR:
1.3868 + return BITOR;
1.3869 + case BAREQ:
1.3870 + return BITOR_ASG;
1.3871 + case CARET:
1.3872 + return BITXOR;
1.3873 + case CARETEQ:
1.3874 + return BITXOR_ASG;
1.3875 + case AMP:
1.3876 + return BITAND;
1.3877 + case AMPEQ:
1.3878 + return BITAND_ASG;
1.3879 + case EQEQ:
1.3880 + return JCTree.Tag.EQ;
1.3881 + case BANGEQ:
1.3882 + return NE;
1.3883 + case LT:
1.3884 + return JCTree.Tag.LT;
1.3885 + case GT:
1.3886 + return JCTree.Tag.GT;
1.3887 + case LTEQ:
1.3888 + return LE;
1.3889 + case GTEQ:
1.3890 + return GE;
1.3891 + case LTLT:
1.3892 + return SL;
1.3893 + case LTLTEQ:
1.3894 + return SL_ASG;
1.3895 + case GTGT:
1.3896 + return SR;
1.3897 + case GTGTEQ:
1.3898 + return SR_ASG;
1.3899 + case GTGTGT:
1.3900 + return USR;
1.3901 + case GTGTGTEQ:
1.3902 + return USR_ASG;
1.3903 + case PLUS:
1.3904 + return JCTree.Tag.PLUS;
1.3905 + case PLUSEQ:
1.3906 + return PLUS_ASG;
1.3907 + case SUB:
1.3908 + return MINUS;
1.3909 + case SUBEQ:
1.3910 + return MINUS_ASG;
1.3911 + case STAR:
1.3912 + return MUL;
1.3913 + case STAREQ:
1.3914 + return MUL_ASG;
1.3915 + case SLASH:
1.3916 + return DIV;
1.3917 + case SLASHEQ:
1.3918 + return DIV_ASG;
1.3919 + case PERCENT:
1.3920 + return MOD;
1.3921 + case PERCENTEQ:
1.3922 + return MOD_ASG;
1.3923 + case INSTANCEOF:
1.3924 + return TYPETEST;
1.3925 + default:
1.3926 + return NO_TAG;
1.3927 + }
1.3928 + }
1.3929 +
1.3930 + /** Return operation tag of unary operator represented by token,
1.3931 + * No_TAG if token is not a binary operator.
1.3932 + */
1.3933 + static JCTree.Tag unoptag(TokenKind token) {
1.3934 + switch (token) {
1.3935 + case PLUS:
1.3936 + return POS;
1.3937 + case SUB:
1.3938 + return NEG;
1.3939 + case BANG:
1.3940 + return NOT;
1.3941 + case TILDE:
1.3942 + return COMPL;
1.3943 + case PLUSPLUS:
1.3944 + return PREINC;
1.3945 + case SUBSUB:
1.3946 + return PREDEC;
1.3947 + default:
1.3948 + return NO_TAG;
1.3949 + }
1.3950 + }
1.3951 +
1.3952 + /** Return type tag of basic type represented by token,
1.3953 + * NONE if token is not a basic type identifier.
1.3954 + */
1.3955 + static TypeTag typetag(TokenKind token) {
1.3956 + switch (token) {
1.3957 + case BYTE:
1.3958 + return TypeTag.BYTE;
1.3959 + case CHAR:
1.3960 + return TypeTag.CHAR;
1.3961 + case SHORT:
1.3962 + return TypeTag.SHORT;
1.3963 + case INT:
1.3964 + return TypeTag.INT;
1.3965 + case LONG:
1.3966 + return TypeTag.LONG;
1.3967 + case FLOAT:
1.3968 + return TypeTag.FLOAT;
1.3969 + case DOUBLE:
1.3970 + return TypeTag.DOUBLE;
1.3971 + case BOOLEAN:
1.3972 + return TypeTag.BOOLEAN;
1.3973 + default:
1.3974 + return TypeTag.NONE;
1.3975 + }
1.3976 + }
1.3977 +
1.3978 + void checkGenerics() {
1.3979 + if (!allowGenerics) {
1.3980 + error(token.pos, "generics.not.supported.in.source", source.name);
1.3981 + allowGenerics = true;
1.3982 + }
1.3983 + }
1.3984 + void checkVarargs() {
1.3985 + if (!allowVarargs) {
1.3986 + error(token.pos, "varargs.not.supported.in.source", source.name);
1.3987 + allowVarargs = true;
1.3988 + }
1.3989 + }
1.3990 + void checkForeach() {
1.3991 + if (!allowForeach) {
1.3992 + error(token.pos, "foreach.not.supported.in.source", source.name);
1.3993 + allowForeach = true;
1.3994 + }
1.3995 + }
1.3996 + void checkStaticImports() {
1.3997 + if (!allowStaticImport) {
1.3998 + error(token.pos, "static.import.not.supported.in.source", source.name);
1.3999 + allowStaticImport = true;
1.4000 + }
1.4001 + }
1.4002 + void checkAnnotations() {
1.4003 + if (!allowAnnotations) {
1.4004 + error(token.pos, "annotations.not.supported.in.source", source.name);
1.4005 + allowAnnotations = true;
1.4006 + }
1.4007 + }
1.4008 + void checkDiamond() {
1.4009 + if (!allowDiamond) {
1.4010 + error(token.pos, "diamond.not.supported.in.source", source.name);
1.4011 + allowDiamond = true;
1.4012 + }
1.4013 + }
1.4014 + void checkMulticatch() {
1.4015 + if (!allowMulticatch) {
1.4016 + error(token.pos, "multicatch.not.supported.in.source", source.name);
1.4017 + allowMulticatch = true;
1.4018 + }
1.4019 + }
1.4020 + void checkTryWithResources() {
1.4021 + if (!allowTWR) {
1.4022 + error(token.pos, "try.with.resources.not.supported.in.source", source.name);
1.4023 + allowTWR = true;
1.4024 + }
1.4025 + }
1.4026 + void checkLambda() {
1.4027 + if (!allowLambda) {
1.4028 + log.error(token.pos, "lambda.not.supported.in.source", source.name);
1.4029 + allowLambda = true;
1.4030 + }
1.4031 + }
1.4032 + void checkMethodReferences() {
1.4033 + if (!allowMethodReferences) {
1.4034 + log.error(token.pos, "method.references.not.supported.in.source", source.name);
1.4035 + allowMethodReferences = true;
1.4036 + }
1.4037 + }
1.4038 + void checkDefaultMethods() {
1.4039 + if (!allowDefaultMethods) {
1.4040 + log.error(token.pos, "default.methods.not.supported.in.source", source.name);
1.4041 + allowDefaultMethods = true;
1.4042 + }
1.4043 + }
1.4044 + void checkIntersectionTypesInCast() {
1.4045 + if (!allowIntersectionTypesInCast) {
1.4046 + log.error(token.pos, "intersection.types.in.cast.not.supported.in.source", source.name);
1.4047 + allowIntersectionTypesInCast = true;
1.4048 + }
1.4049 + }
1.4050 + void checkStaticInterfaceMethods() {
1.4051 + if (!allowStaticInterfaceMethods) {
1.4052 + log.error(token.pos, "static.intf.methods.not.supported.in.source", source.name);
1.4053 + allowStaticInterfaceMethods = true;
1.4054 + }
1.4055 + }
1.4056 + void checkTypeAnnotations() {
1.4057 + if (!allowTypeAnnotations) {
1.4058 + log.error(token.pos, "type.annotations.not.supported.in.source", source.name);
1.4059 + allowTypeAnnotations = true;
1.4060 + }
1.4061 + }
1.4062 + void checkAnnotationsAfterTypeParams(int pos) {
1.4063 + if (!allowAnnotationsAfterTypeParams) {
1.4064 + log.error(pos, "annotations.after.type.params.not.supported.in.source", source.name);
1.4065 + allowAnnotationsAfterTypeParams = true;
1.4066 + }
1.4067 + }
1.4068 +
1.4069 + /*
1.4070 + * a functional source tree and end position mappings
1.4071 + */
1.4072 + protected static class SimpleEndPosTable extends AbstractEndPosTable {
1.4073 +
1.4074 + private final IntHashTable endPosMap;
1.4075 +
1.4076 + SimpleEndPosTable(JavacParser parser) {
1.4077 + super(parser);
1.4078 + endPosMap = new IntHashTable();
1.4079 + }
1.4080 +
1.4081 + public void storeEnd(JCTree tree, int endpos) {
1.4082 + endPosMap.putAtIndex(tree, errorEndPos > endpos ? errorEndPos : endpos,
1.4083 + endPosMap.lookup(tree));
1.4084 + }
1.4085 +
1.4086 + protected <T extends JCTree> T to(T t) {
1.4087 + storeEnd(t, parser.token.endPos);
1.4088 + return t;
1.4089 + }
1.4090 +
1.4091 + protected <T extends JCTree> T toP(T t) {
1.4092 + storeEnd(t, parser.S.prevToken().endPos);
1.4093 + return t;
1.4094 + }
1.4095 +
1.4096 + public int getEndPos(JCTree tree) {
1.4097 + int value = endPosMap.getFromIndex(endPosMap.lookup(tree));
1.4098 + // As long as Position.NOPOS==-1, this just returns value.
1.4099 + return (value == -1) ? Position.NOPOS : value;
1.4100 + }
1.4101 +
1.4102 + public int replaceTree(JCTree oldTree, JCTree newTree) {
1.4103 + int pos = endPosMap.remove(oldTree);
1.4104 + if (pos != -1) {
1.4105 + storeEnd(newTree, pos);
1.4106 + return pos;
1.4107 + }
1.4108 + return Position.NOPOS;
1.4109 + }
1.4110 + }
1.4111 +
1.4112 + /*
1.4113 + * a default skeletal implementation without any mapping overhead.
1.4114 + */
1.4115 + protected static class EmptyEndPosTable extends AbstractEndPosTable {
1.4116 +
1.4117 + EmptyEndPosTable(JavacParser parser) {
1.4118 + super(parser);
1.4119 + }
1.4120 +
1.4121 + public void storeEnd(JCTree tree, int endpos) { /* empty */ }
1.4122 +
1.4123 + protected <T extends JCTree> T to(T t) {
1.4124 + return t;
1.4125 + }
1.4126 +
1.4127 + protected <T extends JCTree> T toP(T t) {
1.4128 + return t;
1.4129 + }
1.4130 +
1.4131 + public int getEndPos(JCTree tree) {
1.4132 + return Position.NOPOS;
1.4133 + }
1.4134 +
1.4135 + public int replaceTree(JCTree oldTree, JCTree newTree) {
1.4136 + return Position.NOPOS;
1.4137 + }
1.4138 +
1.4139 + }
1.4140 +
1.4141 + protected static abstract class AbstractEndPosTable implements EndPosTable {
1.4142 + /**
1.4143 + * The current parser.
1.4144 + */
1.4145 + protected JavacParser parser;
1.4146 +
1.4147 + /**
1.4148 + * Store the last error position.
1.4149 + */
1.4150 + protected int errorEndPos;
1.4151 +
1.4152 + public AbstractEndPosTable(JavacParser parser) {
1.4153 + this.parser = parser;
1.4154 + }
1.4155 +
1.4156 + /**
1.4157 + * Store current token's ending position for a tree, the value of which
1.4158 + * will be the greater of last error position and the ending position of
1.4159 + * the current token.
1.4160 + * @param t The tree.
1.4161 + */
1.4162 + protected abstract <T extends JCTree> T to(T t);
1.4163 +
1.4164 + /**
1.4165 + * Store current token's ending position for a tree, the value of which
1.4166 + * will be the greater of last error position and the ending position of
1.4167 + * the previous token.
1.4168 + * @param t The tree.
1.4169 + */
1.4170 + protected abstract <T extends JCTree> T toP(T t);
1.4171 +
1.4172 + /**
1.4173 + * Set the error position during the parsing phases, the value of which
1.4174 + * will be set only if it is greater than the last stored error position.
1.4175 + * @param errPos The error position
1.4176 + */
1.4177 + protected void setErrorEndPos(int errPos) {
1.4178 + if (errPos > errorEndPos) {
1.4179 + errorEndPos = errPos;
1.4180 + }
1.4181 + }
1.4182 +
1.4183 + protected void setParser(JavacParser parser) {
1.4184 + this.parser = parser;
1.4185 + }
1.4186 + }
1.4187 +}
