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/*
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* Copyright 1999-2006 Sun Microsystems, Inc. All Rights Reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation. Sun designates this
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* particular file as subject to the "Classpath" exception as provided
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* by Sun in the LICENSE file that accompanied this code.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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* CA 95054 USA or visit www.sun.com if you need additional information or
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* have any questions.
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*/
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package com.sun.tools.javac.parser;
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import java.util.*;
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import com.sun.tools.javac.tree.*;
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import com.sun.tools.javac.code.*;
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import com.sun.tools.javac.util.*;
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import com.sun.tools.javac.util.List;
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import static com.sun.tools.javac.util.ListBuffer.lb;
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import com.sun.tools.javac.tree.JCTree.*;
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import static com.sun.tools.javac.parser.Token.*;
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/** The parser maps a token sequence into an abstract syntax
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* tree. It operates by recursive descent, with code derived
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* systematically from an LL(1) grammar. For efficiency reasons, an
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* operator precedence scheme is used for parsing binary operation
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* expressions.
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*
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* <p><b>This is NOT part of any API supported by Sun Microsystems. If
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* you write code that depends on this, you do so at your own risk.
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* This code and its internal interfaces are subject to change or
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* deletion without notice.</b>
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*/
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public class Parser {
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/** A factory for creating parsers. */
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public static class Factory {
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/** The context key for the parser factory. */
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protected static final Context.Key<Parser.Factory> parserFactoryKey =
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new Context.Key<Parser.Factory>();
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/** Get the Factory instance for this context. */
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public static Factory instance(Context context) {
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Factory instance = context.get(parserFactoryKey);
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if (instance == null)
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instance = new Factory(context);
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return instance;
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}
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final TreeMaker F;
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final Log log;
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final Keywords keywords;
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final Source source;
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final Name.Table names;
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final Options options;
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/** Create a new parser factory. */
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protected Factory(Context context) {
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context.put(parserFactoryKey, this);
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this.F = TreeMaker.instance(context);
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this.log = Log.instance(context);
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this.names = Name.Table.instance(context);
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this.keywords = Keywords.instance(context);
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this.source = Source.instance(context);
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this.options = Options.instance(context);
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}
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/**
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* Create a new Parser.
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* @param S Lexer for getting tokens while parsing
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* @param keepDocComments true if javadoc comments should be kept
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* @param genEndPos true if end positions should be generated
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*/
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public Parser newParser(Lexer S, boolean keepDocComments, boolean genEndPos) {
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if (!genEndPos)
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return new Parser(this, S, keepDocComments);
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else
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return new EndPosParser(this, S, keepDocComments);
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}
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}
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/** The number of precedence levels of infix operators.
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*/
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private static final int infixPrecedenceLevels = 10;
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/** The scanner used for lexical analysis.
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*/
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private Lexer S;
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/** The factory to be used for abstract syntax tree construction.
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*/
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protected TreeMaker F;
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/** The log to be used for error diagnostics.
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*/
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private Log log;
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/** The keyword table. */
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private Keywords keywords;
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/** The Source language setting. */
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private Source source;
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/** The name table. */
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private Name.Table names;
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/** Construct a parser from a given scanner, tree factory and log.
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*/
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protected Parser(Factory fac,
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Lexer S,
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boolean keepDocComments) {
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this.S = S;
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S.nextToken(); // prime the pump
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this.F = fac.F;
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this.log = fac.log;
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this.names = fac.names;
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this.keywords = fac.keywords;
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this.source = fac.source;
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Options options = fac.options;
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this.allowGenerics = source.allowGenerics();
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this.allowVarargs = source.allowVarargs();
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this.allowAsserts = source.allowAsserts();
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this.allowEnums = source.allowEnums();
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this.allowForeach = source.allowForeach();
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this.allowStaticImport = source.allowStaticImport();
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this.allowAnnotations = source.allowAnnotations();
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this.keepDocComments = keepDocComments;
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if (keepDocComments) docComments = new HashMap<JCTree,String>();
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this.errorTree = F.Erroneous();
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}
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/** Switch: Should generics be recognized?
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*/
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boolean allowGenerics;
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/** Switch: Should varargs be recognized?
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*/
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boolean allowVarargs;
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/** Switch: should we recognize assert statements, or just give a warning?
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*/
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boolean allowAsserts;
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/** Switch: should we recognize enums, or just give a warning?
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*/
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boolean allowEnums;
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/** Switch: should we recognize foreach?
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*/
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boolean allowForeach;
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/** Switch: should we recognize foreach?
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*/
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boolean allowStaticImport;
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/** Switch: should we recognize annotations?
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*/
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boolean allowAnnotations;
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/** Switch: should we keep docComments?
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*/
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boolean keepDocComments;
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/** When terms are parsed, the mode determines which is expected:
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* mode = EXPR : an expression
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* mode = TYPE : a type
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* mode = NOPARAMS : no parameters allowed for type
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* mode = TYPEARG : type argument
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*/
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static final int EXPR = 1;
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static final int TYPE = 2;
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static final int NOPARAMS = 4;
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static final int TYPEARG = 8;
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/** The current mode.
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*/
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private int mode = 0;
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/** The mode of the term that was parsed last.
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*/
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private int lastmode = 0;
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/* ---------- error recovery -------------- */
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private JCErroneous errorTree;
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/** Skip forward until a suitable stop token is found.
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*/
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private void skip(boolean stopAtImport, boolean stopAtMemberDecl, boolean stopAtIdentifier, boolean stopAtStatement) {
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while (true) {
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switch (S.token()) {
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case SEMI:
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S.nextToken();
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return;
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case PUBLIC:
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case FINAL:
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case ABSTRACT:
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case MONKEYS_AT:
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case EOF:
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case CLASS:
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case INTERFACE:
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case ENUM:
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return;
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case IMPORT:
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if (stopAtImport)
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return;
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break;
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case LBRACE:
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case RBRACE:
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case PRIVATE:
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case PROTECTED:
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case STATIC:
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case TRANSIENT:
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case NATIVE:
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case VOLATILE:
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case SYNCHRONIZED:
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case STRICTFP:
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case LT:
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case BYTE:
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case SHORT:
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case CHAR:
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case INT:
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case LONG:
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case FLOAT:
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case DOUBLE:
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case BOOLEAN:
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case VOID:
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if (stopAtMemberDecl)
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return;
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break;
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case IDENTIFIER:
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if (stopAtIdentifier)
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return;
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break;
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case CASE:
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case DEFAULT:
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case IF:
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case FOR:
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case WHILE:
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case DO:
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case TRY:
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case SWITCH:
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case RETURN:
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case THROW:
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case BREAK:
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case CONTINUE:
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case ELSE:
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case FINALLY:
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case CATCH:
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if (stopAtStatement)
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return;
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break;
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}
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S.nextToken();
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}
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}
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private JCErroneous syntaxError(int pos, String key, Object... arg) {
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return syntaxError(pos, null, key, arg);
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}
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private JCErroneous syntaxError(int pos, List<JCTree> errs, String key, Object... arg) {
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setErrorEndPos(pos);
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reportSyntaxError(pos, key, arg);
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return toP(F.at(pos).Erroneous(errs));
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}
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private int errorPos = Position.NOPOS;
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/**
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* Report a syntax error at given position using the given
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* argument unless one was already reported at the same position.
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*/
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private void reportSyntaxError(int pos, String key, Object... arg) {
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if (pos > S.errPos() || pos == Position.NOPOS) {
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if (S.token() == EOF)
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log.error(pos, "premature.eof");
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else
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log.error(pos, key, arg);
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}
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S.errPos(pos);
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if (S.pos() == errorPos)
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S.nextToken(); // guarantee progress
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errorPos = S.pos();
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}
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/** Generate a syntax error at current position unless one was already
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* reported at the same position.
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*/
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private JCErroneous syntaxError(String key) {
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return syntaxError(S.pos(), key);
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}
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/** Generate a syntax error at current position unless one was
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* already reported at the same position.
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*/
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private JCErroneous syntaxError(String key, String arg) {
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return syntaxError(S.pos(), key, arg);
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}
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/** If next input token matches given token, skip it, otherwise report
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* an error.
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*/
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public void accept(Token token) {
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if (S.token() == token) {
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S.nextToken();
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} else {
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setErrorEndPos(S.pos());
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reportSyntaxError(S.prevEndPos(), "expected", keywords.token2string(token));
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}
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}
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/** Report an illegal start of expression/type error at given position.
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*/
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JCExpression illegal(int pos) {
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setErrorEndPos(S.pos());
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if ((mode & EXPR) != 0)
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return syntaxError(pos, "illegal.start.of.expr");
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else
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return syntaxError(pos, "illegal.start.of.type");
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}
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/** Report an illegal start of expression/type error at current position.
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*/
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JCExpression illegal() {
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return illegal(S.pos());
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}
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/** Diagnose a modifier flag from the set, if any. */
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void checkNoMods(long mods) {
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if (mods != 0) {
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long lowestMod = mods & -mods;
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log.error(S.pos(), "mod.not.allowed.here",
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Flags.toString(lowestMod).trim());
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}
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}
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/* ---------- doc comments --------- */
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/** A hashtable to store all documentation comments
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* indexed by the tree nodes they refer to.
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* defined only if option flag keepDocComment is set.
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*/
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Map<JCTree, String> docComments;
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/** Make an entry into docComments hashtable,
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* provided flag keepDocComments is set and given doc comment is non-null.
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* @param tree The tree to be used as index in the hashtable
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* @param dc The doc comment to associate with the tree, or null.
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*/
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void attach(JCTree tree, String dc) {
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if (keepDocComments && dc != null) {
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// System.out.println("doc comment = ");System.out.println(dc);//DEBUG
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docComments.put(tree, dc);
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}
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}
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/* -------- source positions ------- */
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private int errorEndPos = -1;
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private void setErrorEndPos(int errPos) {
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if (errPos > errorEndPos)
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errorEndPos = errPos;
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}
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protected int getErrorEndPos() {
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return errorEndPos;
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}
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/**
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* Store ending position for a tree.
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* @param tree The tree.
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* @param endpos The ending position to associate with the tree.
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*/
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protected void storeEnd(JCTree tree, int endpos) {}
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/**
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* Store ending position for a tree. The ending position should
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* be the ending position of the current token.
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* @param t The tree.
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*/
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protected <T extends JCTree> T to(T t) { return t; }
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/**
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* Store ending position for a tree. The ending position should
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* be greater of the ending position of the previous token and errorEndPos.
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* @param t The tree.
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*/
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protected <T extends JCTree> T toP(T t) { return t; }
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/** Get the start position for a tree node. The start position is
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* defined to be the position of the first character of the first
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* token of the node's source text.
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* @param tree The tree node
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*/
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public int getStartPos(JCTree tree) {
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return TreeInfo.getStartPos(tree);
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}
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/**
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* Get the end position for a tree node. The end position is
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421 |
* defined to be the position of the last character of the last
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* token of the node's source text. Returns Position.NOPOS if end
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423 |
* positions are not generated or the position is otherwise not
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* found.
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* @param tree The tree node
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*/
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|
427 |
public int getEndPos(JCTree tree) {
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428 |
return Position.NOPOS;
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}
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|
430 |
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431 |
|
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432 |
|
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433 |
/* ---------- parsing -------------- */
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434 |
|
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435 |
/**
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|
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* Ident = IDENTIFIER
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437 |
*/
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438 |
Name ident() {
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439 |
if (S.token() == IDENTIFIER) {
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Name name = S.name();
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S.nextToken();
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442 |
return name;
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443 |
} else if (S.token() == ASSERT) {
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444 |
if (allowAsserts) {
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445 |
log.error(S.pos(), "assert.as.identifier");
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S.nextToken();
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447 |
return names.error;
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448 |
} else {
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449 |
log.warning(S.pos(), "assert.as.identifier");
|
|
450 |
Name name = S.name();
|
|
451 |
S.nextToken();
|
|
452 |
return name;
|
|
453 |
}
|
|
454 |
} else if (S.token() == ENUM) {
|
|
455 |
if (allowEnums) {
|
|
456 |
log.error(S.pos(), "enum.as.identifier");
|
|
457 |
S.nextToken();
|
|
458 |
return names.error;
|
|
459 |
} else {
|
|
460 |
log.warning(S.pos(), "enum.as.identifier");
|
|
461 |
Name name = S.name();
|
|
462 |
S.nextToken();
|
|
463 |
return name;
|
|
464 |
}
|
|
465 |
} else {
|
|
466 |
accept(IDENTIFIER);
|
|
467 |
return names.error;
|
|
468 |
}
|
|
469 |
}
|
|
470 |
|
|
471 |
/**
|
|
472 |
* Qualident = Ident { DOT Ident }
|
|
473 |
*/
|
|
474 |
public JCExpression qualident() {
|
|
475 |
JCExpression t = toP(F.at(S.pos()).Ident(ident()));
|
|
476 |
while (S.token() == DOT) {
|
|
477 |
int pos = S.pos();
|
|
478 |
S.nextToken();
|
|
479 |
t = toP(F.at(pos).Select(t, ident()));
|
|
480 |
}
|
|
481 |
return t;
|
|
482 |
}
|
|
483 |
|
|
484 |
/**
|
|
485 |
* Literal =
|
|
486 |
* INTLITERAL
|
|
487 |
* | LONGLITERAL
|
|
488 |
* | FLOATLITERAL
|
|
489 |
* | DOUBLELITERAL
|
|
490 |
* | CHARLITERAL
|
|
491 |
* | STRINGLITERAL
|
|
492 |
* | TRUE
|
|
493 |
* | FALSE
|
|
494 |
* | NULL
|
|
495 |
*/
|
|
496 |
JCExpression literal(Name prefix) {
|
|
497 |
int pos = S.pos();
|
|
498 |
JCExpression t = errorTree;
|
|
499 |
switch (S.token()) {
|
|
500 |
case INTLITERAL:
|
|
501 |
try {
|
|
502 |
t = F.at(pos).Literal(
|
|
503 |
TypeTags.INT,
|
|
504 |
Convert.string2int(strval(prefix), S.radix()));
|
|
505 |
} catch (NumberFormatException ex) {
|
|
506 |
log.error(S.pos(), "int.number.too.large", strval(prefix));
|
|
507 |
}
|
|
508 |
break;
|
|
509 |
case LONGLITERAL:
|
|
510 |
try {
|
|
511 |
t = F.at(pos).Literal(
|
|
512 |
TypeTags.LONG,
|
|
513 |
new Long(Convert.string2long(strval(prefix), S.radix())));
|
|
514 |
} catch (NumberFormatException ex) {
|
|
515 |
log.error(S.pos(), "int.number.too.large", strval(prefix));
|
|
516 |
}
|
|
517 |
break;
|
|
518 |
case FLOATLITERAL: {
|
|
519 |
String proper = (S.radix() == 16 ? ("0x"+ S.stringVal()) : S.stringVal());
|
|
520 |
Float n;
|
|
521 |
try {
|
|
522 |
n = Float.valueOf(proper);
|
|
523 |
} catch (NumberFormatException ex) {
|
|
524 |
// error already repoted in scanner
|
|
525 |
n = Float.NaN;
|
|
526 |
}
|
|
527 |
if (n.floatValue() == 0.0f && !isZero(proper))
|
|
528 |
log.error(S.pos(), "fp.number.too.small");
|
|
529 |
else if (n.floatValue() == Float.POSITIVE_INFINITY)
|
|
530 |
log.error(S.pos(), "fp.number.too.large");
|
|
531 |
else
|
|
532 |
t = F.at(pos).Literal(TypeTags.FLOAT, n);
|
|
533 |
break;
|
|
534 |
}
|
|
535 |
case DOUBLELITERAL: {
|
|
536 |
String proper = (S.radix() == 16 ? ("0x"+ S.stringVal()) : S.stringVal());
|
|
537 |
Double n;
|
|
538 |
try {
|
|
539 |
n = Double.valueOf(proper);
|
|
540 |
} catch (NumberFormatException ex) {
|
|
541 |
// error already reported in scanner
|
|
542 |
n = Double.NaN;
|
|
543 |
}
|
|
544 |
if (n.doubleValue() == 0.0d && !isZero(proper))
|
|
545 |
log.error(S.pos(), "fp.number.too.small");
|
|
546 |
else if (n.doubleValue() == Double.POSITIVE_INFINITY)
|
|
547 |
log.error(S.pos(), "fp.number.too.large");
|
|
548 |
else
|
|
549 |
t = F.at(pos).Literal(TypeTags.DOUBLE, n);
|
|
550 |
break;
|
|
551 |
}
|
|
552 |
case CHARLITERAL:
|
|
553 |
t = F.at(pos).Literal(
|
|
554 |
TypeTags.CHAR,
|
|
555 |
S.stringVal().charAt(0) + 0);
|
|
556 |
break;
|
|
557 |
case STRINGLITERAL:
|
|
558 |
t = F.at(pos).Literal(
|
|
559 |
TypeTags.CLASS,
|
|
560 |
S.stringVal());
|
|
561 |
break;
|
|
562 |
case TRUE: case FALSE:
|
|
563 |
t = F.at(pos).Literal(
|
|
564 |
TypeTags.BOOLEAN,
|
|
565 |
(S.token() == TRUE ? 1 : 0));
|
|
566 |
break;
|
|
567 |
case NULL:
|
|
568 |
t = F.at(pos).Literal(
|
|
569 |
TypeTags.BOT,
|
|
570 |
null);
|
|
571 |
break;
|
|
572 |
default:
|
|
573 |
assert false;
|
|
574 |
}
|
|
575 |
if (t == errorTree)
|
|
576 |
t = F.at(pos).Erroneous();
|
|
577 |
storeEnd(t, S.endPos());
|
|
578 |
S.nextToken();
|
|
579 |
return t;
|
|
580 |
}
|
|
581 |
//where
|
|
582 |
boolean isZero(String s) {
|
|
583 |
char[] cs = s.toCharArray();
|
|
584 |
int base = ((Character.toLowerCase(s.charAt(1)) == 'x') ? 16 : 10);
|
|
585 |
int i = ((base==16) ? 2 : 0);
|
|
586 |
while (i < cs.length && (cs[i] == '0' || cs[i] == '.')) i++;
|
|
587 |
return !(i < cs.length && (Character.digit(cs[i], base) > 0));
|
|
588 |
}
|
|
589 |
|
|
590 |
String strval(Name prefix) {
|
|
591 |
String s = S.stringVal();
|
|
592 |
return (prefix.len == 0) ? s : prefix + s;
|
|
593 |
}
|
|
594 |
|
|
595 |
/** terms can be either expressions or types.
|
|
596 |
*/
|
|
597 |
public JCExpression expression() {
|
|
598 |
return term(EXPR);
|
|
599 |
}
|
|
600 |
|
|
601 |
public JCExpression type() {
|
|
602 |
return term(TYPE);
|
|
603 |
}
|
|
604 |
|
|
605 |
JCExpression term(int newmode) {
|
|
606 |
int prevmode = mode;
|
|
607 |
mode = newmode;
|
|
608 |
JCExpression t = term();
|
|
609 |
lastmode = mode;
|
|
610 |
mode = prevmode;
|
|
611 |
return t;
|
|
612 |
}
|
|
613 |
|
|
614 |
/**
|
|
615 |
* Expression = Expression1 [ExpressionRest]
|
|
616 |
* ExpressionRest = [AssignmentOperator Expression1]
|
|
617 |
* AssignmentOperator = "=" | "+=" | "-=" | "*=" | "/=" |
|
|
618 |
* "&=" | "|=" | "^=" |
|
|
619 |
* "%=" | "<<=" | ">>=" | ">>>="
|
|
620 |
* Type = Type1
|
|
621 |
* TypeNoParams = TypeNoParams1
|
|
622 |
* StatementExpression = Expression
|
|
623 |
* ConstantExpression = Expression
|
|
624 |
*/
|
|
625 |
JCExpression term() {
|
|
626 |
JCExpression t = term1();
|
|
627 |
if ((mode & EXPR) != 0 &&
|
|
628 |
S.token() == EQ || PLUSEQ.compareTo(S.token()) <= 0 && S.token().compareTo(GTGTGTEQ) <= 0)
|
|
629 |
return termRest(t);
|
|
630 |
else
|
|
631 |
return t;
|
|
632 |
}
|
|
633 |
|
|
634 |
JCExpression termRest(JCExpression t) {
|
|
635 |
switch (S.token()) {
|
|
636 |
case EQ: {
|
|
637 |
int pos = S.pos();
|
|
638 |
S.nextToken();
|
|
639 |
mode = EXPR;
|
|
640 |
JCExpression t1 = term();
|
|
641 |
return toP(F.at(pos).Assign(t, t1));
|
|
642 |
}
|
|
643 |
case PLUSEQ:
|
|
644 |
case SUBEQ:
|
|
645 |
case STAREQ:
|
|
646 |
case SLASHEQ:
|
|
647 |
case PERCENTEQ:
|
|
648 |
case AMPEQ:
|
|
649 |
case BAREQ:
|
|
650 |
case CARETEQ:
|
|
651 |
case LTLTEQ:
|
|
652 |
case GTGTEQ:
|
|
653 |
case GTGTGTEQ:
|
|
654 |
int pos = S.pos();
|
|
655 |
Token token = S.token();
|
|
656 |
S.nextToken();
|
|
657 |
mode = EXPR;
|
|
658 |
JCExpression t1 = term();
|
|
659 |
return F.at(pos).Assignop(optag(token), t, t1);
|
|
660 |
default:
|
|
661 |
return t;
|
|
662 |
}
|
|
663 |
}
|
|
664 |
|
|
665 |
/** Expression1 = Expression2 [Expression1Rest]
|
|
666 |
* Type1 = Type2
|
|
667 |
* TypeNoParams1 = TypeNoParams2
|
|
668 |
*/
|
|
669 |
JCExpression term1() {
|
|
670 |
JCExpression t = term2();
|
|
671 |
if ((mode & EXPR) != 0 && S.token() == QUES) {
|
|
672 |
mode = EXPR;
|
|
673 |
return term1Rest(t);
|
|
674 |
} else {
|
|
675 |
return t;
|
|
676 |
}
|
|
677 |
}
|
|
678 |
|
|
679 |
/** Expression1Rest = ["?" Expression ":" Expression1]
|
|
680 |
*/
|
|
681 |
JCExpression term1Rest(JCExpression t) {
|
|
682 |
if (S.token() == QUES) {
|
|
683 |
int pos = S.pos();
|
|
684 |
S.nextToken();
|
|
685 |
JCExpression t1 = term();
|
|
686 |
accept(COLON);
|
|
687 |
JCExpression t2 = term1();
|
|
688 |
return F.at(pos).Conditional(t, t1, t2);
|
|
689 |
} else {
|
|
690 |
return t;
|
|
691 |
}
|
|
692 |
}
|
|
693 |
|
|
694 |
/** Expression2 = Expression3 [Expression2Rest]
|
|
695 |
* Type2 = Type3
|
|
696 |
* TypeNoParams2 = TypeNoParams3
|
|
697 |
*/
|
|
698 |
JCExpression term2() {
|
|
699 |
JCExpression t = term3();
|
|
700 |
if ((mode & EXPR) != 0 && prec(S.token()) >= TreeInfo.orPrec) {
|
|
701 |
mode = EXPR;
|
|
702 |
return term2Rest(t, TreeInfo.orPrec);
|
|
703 |
} else {
|
|
704 |
return t;
|
|
705 |
}
|
|
706 |
}
|
|
707 |
|
|
708 |
/* Expression2Rest = {infixop Expression3}
|
|
709 |
* | Expression3 instanceof Type
|
|
710 |
* infixop = "||"
|
|
711 |
* | "&&"
|
|
712 |
* | "|"
|
|
713 |
* | "^"
|
|
714 |
* | "&"
|
|
715 |
* | "==" | "!="
|
|
716 |
* | "<" | ">" | "<=" | ">="
|
|
717 |
* | "<<" | ">>" | ">>>"
|
|
718 |
* | "+" | "-"
|
|
719 |
* | "*" | "/" | "%"
|
|
720 |
*/
|
|
721 |
JCExpression term2Rest(JCExpression t, int minprec) {
|
|
722 |
List<JCExpression[]> savedOd = odStackSupply.elems;
|
|
723 |
JCExpression[] odStack = newOdStack();
|
|
724 |
List<Token[]> savedOp = opStackSupply.elems;
|
|
725 |
Token[] opStack = newOpStack();
|
|
726 |
// optimization, was odStack = new Tree[...]; opStack = new Tree[...];
|
|
727 |
int top = 0;
|
|
728 |
odStack[0] = t;
|
|
729 |
int startPos = S.pos();
|
|
730 |
Token topOp = ERROR;
|
|
731 |
while (prec(S.token()) >= minprec) {
|
|
732 |
opStack[top] = topOp;
|
|
733 |
top++;
|
|
734 |
topOp = S.token();
|
|
735 |
int pos = S.pos();
|
|
736 |
S.nextToken();
|
|
737 |
odStack[top] = topOp == INSTANCEOF ? type() : term3();
|
|
738 |
while (top > 0 && prec(topOp) >= prec(S.token())) {
|
|
739 |
odStack[top-1] = makeOp(pos, topOp, odStack[top-1],
|
|
740 |
odStack[top]);
|
|
741 |
top--;
|
|
742 |
topOp = opStack[top];
|
|
743 |
}
|
|
744 |
}
|
|
745 |
assert top == 0;
|
|
746 |
t = odStack[0];
|
|
747 |
|
|
748 |
if (t.getTag() == JCTree.PLUS) {
|
|
749 |
StringBuffer buf = foldStrings(t);
|
|
750 |
if (buf != null) {
|
|
751 |
t = toP(F.at(startPos).Literal(TypeTags.CLASS, buf.toString()));
|
|
752 |
}
|
|
753 |
}
|
|
754 |
|
|
755 |
odStackSupply.elems = savedOd; // optimization
|
|
756 |
opStackSupply.elems = savedOp; // optimization
|
|
757 |
return t;
|
|
758 |
}
|
|
759 |
//where
|
|
760 |
/** Construct a binary or type test node.
|
|
761 |
*/
|
|
762 |
private JCExpression makeOp(int pos,
|
|
763 |
Token topOp,
|
|
764 |
JCExpression od1,
|
|
765 |
JCExpression od2)
|
|
766 |
{
|
|
767 |
if (topOp == INSTANCEOF) {
|
|
768 |
return F.at(pos).TypeTest(od1, od2);
|
|
769 |
} else {
|
|
770 |
return F.at(pos).Binary(optag(topOp), od1, od2);
|
|
771 |
}
|
|
772 |
}
|
|
773 |
/** If tree is a concatenation of string literals, replace it
|
|
774 |
* by a single literal representing the concatenated string.
|
|
775 |
*/
|
|
776 |
protected StringBuffer foldStrings(JCTree tree) {
|
|
777 |
List<String> buf = List.nil();
|
|
778 |
while (true) {
|
|
779 |
if (tree.getTag() == JCTree.LITERAL) {
|
|
780 |
JCLiteral lit = (JCLiteral) tree;
|
|
781 |
if (lit.typetag == TypeTags.CLASS) {
|
|
782 |
StringBuffer sbuf =
|
|
783 |
new StringBuffer((String)lit.value);
|
|
784 |
while (buf.nonEmpty()) {
|
|
785 |
sbuf.append(buf.head);
|
|
786 |
buf = buf.tail;
|
|
787 |
}
|
|
788 |
return sbuf;
|
|
789 |
}
|
|
790 |
} else if (tree.getTag() == JCTree.PLUS) {
|
|
791 |
JCBinary op = (JCBinary)tree;
|
|
792 |
if (op.rhs.getTag() == JCTree.LITERAL) {
|
|
793 |
JCLiteral lit = (JCLiteral) op.rhs;
|
|
794 |
if (lit.typetag == TypeTags.CLASS) {
|
|
795 |
buf = buf.prepend((String) lit.value);
|
|
796 |
tree = op.lhs;
|
|
797 |
continue;
|
|
798 |
}
|
|
799 |
}
|
|
800 |
}
|
|
801 |
return null;
|
|
802 |
}
|
|
803 |
}
|
|
804 |
|
|
805 |
/** optimization: To save allocating a new operand/operator stack
|
|
806 |
* for every binary operation, we use supplys.
|
|
807 |
*/
|
|
808 |
ListBuffer<JCExpression[]> odStackSupply = new ListBuffer<JCExpression[]>();
|
|
809 |
ListBuffer<Token[]> opStackSupply = new ListBuffer<Token[]>();
|
|
810 |
|
|
811 |
private JCExpression[] newOdStack() {
|
|
812 |
if (odStackSupply.elems == odStackSupply.last)
|
|
813 |
odStackSupply.append(new JCExpression[infixPrecedenceLevels + 1]);
|
|
814 |
JCExpression[] odStack = odStackSupply.elems.head;
|
|
815 |
odStackSupply.elems = odStackSupply.elems.tail;
|
|
816 |
return odStack;
|
|
817 |
}
|
|
818 |
|
|
819 |
private Token[] newOpStack() {
|
|
820 |
if (opStackSupply.elems == opStackSupply.last)
|
|
821 |
opStackSupply.append(new Token[infixPrecedenceLevels + 1]);
|
|
822 |
Token[] opStack = opStackSupply.elems.head;
|
|
823 |
opStackSupply.elems = opStackSupply.elems.tail;
|
|
824 |
return opStack;
|
|
825 |
}
|
|
826 |
|
|
827 |
/** Expression3 = PrefixOp Expression3
|
|
828 |
* | "(" Expr | TypeNoParams ")" Expression3
|
|
829 |
* | Primary {Selector} {PostfixOp}
|
|
830 |
* Primary = "(" Expression ")"
|
|
831 |
* | Literal
|
|
832 |
* | [TypeArguments] THIS [Arguments]
|
|
833 |
* | [TypeArguments] SUPER SuperSuffix
|
|
834 |
* | NEW [TypeArguments] Creator
|
|
835 |
* | Ident { "." Ident }
|
|
836 |
* [ "[" ( "]" BracketsOpt "." CLASS | Expression "]" )
|
|
837 |
* | Arguments
|
|
838 |
* | "." ( CLASS | THIS | [TypeArguments] SUPER Arguments | NEW [TypeArguments] InnerCreator )
|
|
839 |
* ]
|
|
840 |
* | BasicType BracketsOpt "." CLASS
|
|
841 |
* PrefixOp = "++" | "--" | "!" | "~" | "+" | "-"
|
|
842 |
* PostfixOp = "++" | "--"
|
|
843 |
* Type3 = Ident { "." Ident } [TypeArguments] {TypeSelector} BracketsOpt
|
|
844 |
* | BasicType
|
|
845 |
* TypeNoParams3 = Ident { "." Ident } BracketsOpt
|
|
846 |
* Selector = "." [TypeArguments] Ident [Arguments]
|
|
847 |
* | "." THIS
|
|
848 |
* | "." [TypeArguments] SUPER SuperSuffix
|
|
849 |
* | "." NEW [TypeArguments] InnerCreator
|
|
850 |
* | "[" Expression "]"
|
|
851 |
* TypeSelector = "." Ident [TypeArguments]
|
|
852 |
* SuperSuffix = Arguments | "." Ident [Arguments]
|
|
853 |
*/
|
|
854 |
protected JCExpression term3() {
|
|
855 |
int pos = S.pos();
|
|
856 |
JCExpression t;
|
|
857 |
List<JCExpression> typeArgs = typeArgumentsOpt(EXPR);
|
|
858 |
switch (S.token()) {
|
|
859 |
case QUES:
|
|
860 |
if ((mode & TYPE) != 0 && (mode & (TYPEARG|NOPARAMS)) == TYPEARG) {
|
|
861 |
mode = TYPE;
|
|
862 |
return typeArgument();
|
|
863 |
} else
|
|
864 |
return illegal();
|
|
865 |
case PLUSPLUS: case SUBSUB: case BANG: case TILDE: case PLUS: case SUB:
|
|
866 |
if (typeArgs == null && (mode & EXPR) != 0) {
|
|
867 |
Token token = S.token();
|
|
868 |
S.nextToken();
|
|
869 |
mode = EXPR;
|
|
870 |
if (token == SUB &&
|
|
871 |
(S.token() == INTLITERAL || S.token() == LONGLITERAL) &&
|
|
872 |
S.radix() == 10) {
|
|
873 |
mode = EXPR;
|
|
874 |
t = literal(names.hyphen);
|
|
875 |
} else {
|
|
876 |
t = term3();
|
|
877 |
return F.at(pos).Unary(unoptag(token), t);
|
|
878 |
}
|
|
879 |
} else return illegal();
|
|
880 |
break;
|
|
881 |
case LPAREN:
|
|
882 |
if (typeArgs == null && (mode & EXPR) != 0) {
|
|
883 |
S.nextToken();
|
|
884 |
mode = EXPR | TYPE | NOPARAMS;
|
|
885 |
t = term3();
|
|
886 |
if ((mode & TYPE) != 0 && S.token() == LT) {
|
|
887 |
// Could be a cast to a parameterized type
|
|
888 |
int op = JCTree.LT;
|
|
889 |
int pos1 = S.pos();
|
|
890 |
S.nextToken();
|
|
891 |
mode &= (EXPR | TYPE);
|
|
892 |
mode |= TYPEARG;
|
|
893 |
JCExpression t1 = term3();
|
|
894 |
if ((mode & TYPE) != 0 &&
|
|
895 |
(S.token() == COMMA || S.token() == GT)) {
|
|
896 |
mode = TYPE;
|
|
897 |
ListBuffer<JCExpression> args = new ListBuffer<JCExpression>();
|
|
898 |
args.append(t1);
|
|
899 |
while (S.token() == COMMA) {
|
|
900 |
S.nextToken();
|
|
901 |
args.append(typeArgument());
|
|
902 |
}
|
|
903 |
accept(GT);
|
|
904 |
t = F.at(pos1).TypeApply(t, args.toList());
|
|
905 |
checkGenerics();
|
|
906 |
t = bracketsOpt(toP(t));
|
|
907 |
} else if ((mode & EXPR) != 0) {
|
|
908 |
mode = EXPR;
|
|
909 |
t = F.at(pos1).Binary(op, t, term2Rest(t1, TreeInfo.shiftPrec));
|
|
910 |
t = termRest(term1Rest(term2Rest(t, TreeInfo.orPrec)));
|
|
911 |
} else {
|
|
912 |
accept(GT);
|
|
913 |
}
|
|
914 |
} else {
|
|
915 |
t = termRest(term1Rest(term2Rest(t, TreeInfo.orPrec)));
|
|
916 |
}
|
|
917 |
accept(RPAREN);
|
|
918 |
lastmode = mode;
|
|
919 |
mode = EXPR;
|
|
920 |
if ((lastmode & EXPR) == 0) {
|
|
921 |
JCExpression t1 = term3();
|
|
922 |
return F.at(pos).TypeCast(t, t1);
|
|
923 |
} else if ((lastmode & TYPE) != 0) {
|
|
924 |
switch (S.token()) {
|
|
925 |
/*case PLUSPLUS: case SUBSUB: */
|
|
926 |
case BANG: case TILDE:
|
|
927 |
case LPAREN: case THIS: case SUPER:
|
|
928 |
case INTLITERAL: case LONGLITERAL: case FLOATLITERAL:
|
|
929 |
case DOUBLELITERAL: case CHARLITERAL: case STRINGLITERAL:
|
|
930 |
case TRUE: case FALSE: case NULL:
|
|
931 |
case NEW: case IDENTIFIER: case ASSERT: case ENUM:
|
|
932 |
case BYTE: case SHORT: case CHAR: case INT:
|
|
933 |
case LONG: case FLOAT: case DOUBLE: case BOOLEAN: case VOID:
|
|
934 |
JCExpression t1 = term3();
|
|
935 |
return F.at(pos).TypeCast(t, t1);
|
|
936 |
}
|
|
937 |
}
|
|
938 |
} else return illegal();
|
|
939 |
t = toP(F.at(pos).Parens(t));
|
|
940 |
break;
|
|
941 |
case THIS:
|
|
942 |
if ((mode & EXPR) != 0) {
|
|
943 |
mode = EXPR;
|
|
944 |
t = to(F.at(pos).Ident(names._this));
|
|
945 |
S.nextToken();
|
|
946 |
if (typeArgs == null)
|
|
947 |
t = argumentsOpt(null, t);
|
|
948 |
else
|
|
949 |
t = arguments(typeArgs, t);
|
|
950 |
typeArgs = null;
|
|
951 |
} else return illegal();
|
|
952 |
break;
|
|
953 |
case SUPER:
|
|
954 |
if ((mode & EXPR) != 0) {
|
|
955 |
mode = EXPR;
|
|
956 |
t = to(superSuffix(typeArgs, F.at(pos).Ident(names._super)));
|
|
957 |
typeArgs = null;
|
|
958 |
} else return illegal();
|
|
959 |
break;
|
|
960 |
case INTLITERAL: case LONGLITERAL: case FLOATLITERAL: case DOUBLELITERAL:
|
|
961 |
case CHARLITERAL: case STRINGLITERAL:
|
|
962 |
case TRUE: case FALSE: case NULL:
|
|
963 |
if (typeArgs == null && (mode & EXPR) != 0) {
|
|
964 |
mode = EXPR;
|
|
965 |
t = literal(names.empty);
|
|
966 |
} else return illegal();
|
|
967 |
break;
|
|
968 |
case NEW:
|
|
969 |
if (typeArgs != null) return illegal();
|
|
970 |
if ((mode & EXPR) != 0) {
|
|
971 |
mode = EXPR;
|
|
972 |
S.nextToken();
|
|
973 |
if (S.token() == LT) typeArgs = typeArguments();
|
|
974 |
t = creator(pos, typeArgs);
|
|
975 |
typeArgs = null;
|
|
976 |
} else return illegal();
|
|
977 |
break;
|
|
978 |
case IDENTIFIER: case ASSERT: case ENUM:
|
|
979 |
if (typeArgs != null) return illegal();
|
|
980 |
t = toP(F.at(S.pos()).Ident(ident()));
|
|
981 |
loop: while (true) {
|
|
982 |
pos = S.pos();
|
|
983 |
switch (S.token()) {
|
|
984 |
case LBRACKET:
|
|
985 |
S.nextToken();
|
|
986 |
if (S.token() == RBRACKET) {
|
|
987 |
S.nextToken();
|
|
988 |
t = bracketsOpt(t);
|
|
989 |
t = toP(F.at(pos).TypeArray(t));
|
|
990 |
t = bracketsSuffix(t);
|
|
991 |
} else {
|
|
992 |
if ((mode & EXPR) != 0) {
|
|
993 |
mode = EXPR;
|
|
994 |
JCExpression t1 = term();
|
|
995 |
t = to(F.at(pos).Indexed(t, t1));
|
|
996 |
}
|
|
997 |
accept(RBRACKET);
|
|
998 |
}
|
|
999 |
break loop;
|
|
1000 |
case LPAREN:
|
|
1001 |
if ((mode & EXPR) != 0) {
|
|
1002 |
mode = EXPR;
|
|
1003 |
t = arguments(typeArgs, t);
|
|
1004 |
typeArgs = null;
|
|
1005 |
}
|
|
1006 |
break loop;
|
|
1007 |
case DOT:
|
|
1008 |
S.nextToken();
|
|
1009 |
typeArgs = typeArgumentsOpt(EXPR);
|
|
1010 |
if ((mode & EXPR) != 0) {
|
|
1011 |
switch (S.token()) {
|
|
1012 |
case CLASS:
|
|
1013 |
if (typeArgs != null) return illegal();
|
|
1014 |
mode = EXPR;
|
|
1015 |
t = to(F.at(pos).Select(t, names._class));
|
|
1016 |
S.nextToken();
|
|
1017 |
break loop;
|
|
1018 |
case THIS:
|
|
1019 |
if (typeArgs != null) return illegal();
|
|
1020 |
mode = EXPR;
|
|
1021 |
t = to(F.at(pos).Select(t, names._this));
|
|
1022 |
S.nextToken();
|
|
1023 |
break loop;
|
|
1024 |
case SUPER:
|
|
1025 |
mode = EXPR;
|
|
1026 |
t = to(F.at(pos).Select(t, names._super));
|
|
1027 |
t = superSuffix(typeArgs, t);
|
|
1028 |
typeArgs = null;
|
|
1029 |
break loop;
|
|
1030 |
case NEW:
|
|
1031 |
if (typeArgs != null) return illegal();
|
|
1032 |
mode = EXPR;
|
|
1033 |
int pos1 = S.pos();
|
|
1034 |
S.nextToken();
|
|
1035 |
if (S.token() == LT) typeArgs = typeArguments();
|
|
1036 |
t = innerCreator(pos1, typeArgs, t);
|
|
1037 |
typeArgs = null;
|
|
1038 |
break loop;
|
|
1039 |
}
|
|
1040 |
}
|
|
1041 |
// typeArgs saved for next loop iteration.
|
|
1042 |
t = toP(F.at(pos).Select(t, ident()));
|
|
1043 |
break;
|
|
1044 |
default:
|
|
1045 |
break loop;
|
|
1046 |
}
|
|
1047 |
}
|
|
1048 |
if (typeArgs != null) illegal();
|
|
1049 |
t = typeArgumentsOpt(t);
|
|
1050 |
break;
|
|
1051 |
case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT:
|
|
1052 |
case DOUBLE: case BOOLEAN:
|
|
1053 |
if (typeArgs != null) illegal();
|
|
1054 |
t = bracketsSuffix(bracketsOpt(basicType()));
|
|
1055 |
break;
|
|
1056 |
case VOID:
|
|
1057 |
if (typeArgs != null) illegal();
|
|
1058 |
if ((mode & EXPR) != 0) {
|
|
1059 |
S.nextToken();
|
|
1060 |
if (S.token() == DOT) {
|
|
1061 |
JCPrimitiveTypeTree ti = toP(F.at(pos).TypeIdent(TypeTags.VOID));
|
|
1062 |
t = bracketsSuffix(ti);
|
|
1063 |
} else {
|
|
1064 |
return illegal(pos);
|
|
1065 |
}
|
|
1066 |
} else {
|
|
1067 |
return illegal();
|
|
1068 |
}
|
|
1069 |
break;
|
|
1070 |
default:
|
|
1071 |
return illegal();
|
|
1072 |
}
|
|
1073 |
if (typeArgs != null) illegal();
|
|
1074 |
while (true) {
|
|
1075 |
int pos1 = S.pos();
|
|
1076 |
if (S.token() == LBRACKET) {
|
|
1077 |
S.nextToken();
|
|
1078 |
if ((mode & TYPE) != 0) {
|
|
1079 |
int oldmode = mode;
|
|
1080 |
mode = TYPE;
|
|
1081 |
if (S.token() == RBRACKET) {
|
|
1082 |
S.nextToken();
|
|
1083 |
t = bracketsOpt(t);
|
|
1084 |
t = toP(F.at(pos1).TypeArray(t));
|
|
1085 |
return t;
|
|
1086 |
}
|
|
1087 |
mode = oldmode;
|
|
1088 |
}
|
|
1089 |
if ((mode & EXPR) != 0) {
|
|
1090 |
mode = EXPR;
|
|
1091 |
JCExpression t1 = term();
|
|
1092 |
t = to(F.at(pos1).Indexed(t, t1));
|
|
1093 |
}
|
|
1094 |
accept(RBRACKET);
|
|
1095 |
} else if (S.token() == DOT) {
|
|
1096 |
S.nextToken();
|
|
1097 |
typeArgs = typeArgumentsOpt(EXPR);
|
|
1098 |
if (S.token() == SUPER && (mode & EXPR) != 0) {
|
|
1099 |
mode = EXPR;
|
|
1100 |
t = to(F.at(pos1).Select(t, names._super));
|
|
1101 |
S.nextToken();
|
|
1102 |
t = arguments(typeArgs, t);
|
|
1103 |
typeArgs = null;
|
|
1104 |
} else if (S.token() == NEW && (mode & EXPR) != 0) {
|
|
1105 |
if (typeArgs != null) return illegal();
|
|
1106 |
mode = EXPR;
|
|
1107 |
int pos2 = S.pos();
|
|
1108 |
S.nextToken();
|
|
1109 |
if (S.token() == LT) typeArgs = typeArguments();
|
|
1110 |
t = innerCreator(pos2, typeArgs, t);
|
|
1111 |
typeArgs = null;
|
|
1112 |
} else {
|
|
1113 |
t = toP(F.at(pos1).Select(t, ident()));
|
|
1114 |
t = argumentsOpt(typeArgs, typeArgumentsOpt(t));
|
|
1115 |
typeArgs = null;
|
|
1116 |
}
|
|
1117 |
} else {
|
|
1118 |
break;
|
|
1119 |
}
|
|
1120 |
}
|
|
1121 |
while ((S.token() == PLUSPLUS || S.token() == SUBSUB) && (mode & EXPR) != 0) {
|
|
1122 |
mode = EXPR;
|
|
1123 |
t = to(F.at(S.pos()).Unary(
|
|
1124 |
S.token() == PLUSPLUS ? JCTree.POSTINC : JCTree.POSTDEC, t));
|
|
1125 |
S.nextToken();
|
|
1126 |
}
|
|
1127 |
return toP(t);
|
|
1128 |
}
|
|
1129 |
|
|
1130 |
/** SuperSuffix = Arguments | "." [TypeArguments] Ident [Arguments]
|
|
1131 |
*/
|
|
1132 |
JCExpression superSuffix(List<JCExpression> typeArgs, JCExpression t) {
|
|
1133 |
S.nextToken();
|
|
1134 |
if (S.token() == LPAREN || typeArgs != null) {
|
|
1135 |
t = arguments(typeArgs, t);
|
|
1136 |
} else {
|
|
1137 |
int pos = S.pos();
|
|
1138 |
accept(DOT);
|
|
1139 |
typeArgs = (S.token() == LT) ? typeArguments() : null;
|
|
1140 |
t = toP(F.at(pos).Select(t, ident()));
|
|
1141 |
t = argumentsOpt(typeArgs, t);
|
|
1142 |
}
|
|
1143 |
return t;
|
|
1144 |
}
|
|
1145 |
|
|
1146 |
/** BasicType = BYTE | SHORT | CHAR | INT | LONG | FLOAT | DOUBLE | BOOLEAN
|
|
1147 |
*/
|
|
1148 |
JCPrimitiveTypeTree basicType() {
|
|
1149 |
JCPrimitiveTypeTree t = to(F.at(S.pos()).TypeIdent(typetag(S.token())));
|
|
1150 |
S.nextToken();
|
|
1151 |
return t;
|
|
1152 |
}
|
|
1153 |
|
|
1154 |
/** ArgumentsOpt = [ Arguments ]
|
|
1155 |
*/
|
|
1156 |
JCExpression argumentsOpt(List<JCExpression> typeArgs, JCExpression t) {
|
|
1157 |
if ((mode & EXPR) != 0 && S.token() == LPAREN || typeArgs != null) {
|
|
1158 |
mode = EXPR;
|
|
1159 |
return arguments(typeArgs, t);
|
|
1160 |
} else {
|
|
1161 |
return t;
|
|
1162 |
}
|
|
1163 |
}
|
|
1164 |
|
|
1165 |
/** Arguments = "(" [Expression { COMMA Expression }] ")"
|
|
1166 |
*/
|
|
1167 |
List<JCExpression> arguments() {
|
|
1168 |
ListBuffer<JCExpression> args = lb();
|
|
1169 |
if (S.token() == LPAREN) {
|
|
1170 |
S.nextToken();
|
|
1171 |
if (S.token() != RPAREN) {
|
|
1172 |
args.append(expression());
|
|
1173 |
while (S.token() == COMMA) {
|
|
1174 |
S.nextToken();
|
|
1175 |
args.append(expression());
|
|
1176 |
}
|
|
1177 |
}
|
|
1178 |
accept(RPAREN);
|
|
1179 |
} else {
|
|
1180 |
syntaxError(S.pos(), "expected", keywords.token2string(LPAREN));
|
|
1181 |
}
|
|
1182 |
return args.toList();
|
|
1183 |
}
|
|
1184 |
|
|
1185 |
JCMethodInvocation arguments(List<JCExpression> typeArgs, JCExpression t) {
|
|
1186 |
int pos = S.pos();
|
|
1187 |
List<JCExpression> args = arguments();
|
|
1188 |
return toP(F.at(pos).Apply(typeArgs, t, args));
|
|
1189 |
}
|
|
1190 |
|
|
1191 |
/** TypeArgumentsOpt = [ TypeArguments ]
|
|
1192 |
*/
|
|
1193 |
JCExpression typeArgumentsOpt(JCExpression t) {
|
|
1194 |
if (S.token() == LT &&
|
|
1195 |
(mode & TYPE) != 0 &&
|
|
1196 |
(mode & NOPARAMS) == 0) {
|
|
1197 |
mode = TYPE;
|
|
1198 |
checkGenerics();
|
|
1199 |
return typeArguments(t);
|
|
1200 |
} else {
|
|
1201 |
return t;
|
|
1202 |
}
|
|
1203 |
}
|
|
1204 |
List<JCExpression> typeArgumentsOpt() {
|
|
1205 |
return typeArgumentsOpt(TYPE);
|
|
1206 |
}
|
|
1207 |
|
|
1208 |
List<JCExpression> typeArgumentsOpt(int useMode) {
|
|
1209 |
if (S.token() == LT) {
|
|
1210 |
checkGenerics();
|
|
1211 |
if ((mode & useMode) == 0 ||
|
|
1212 |
(mode & NOPARAMS) != 0) {
|
|
1213 |
illegal();
|
|
1214 |
}
|
|
1215 |
mode = useMode;
|
|
1216 |
return typeArguments();
|
|
1217 |
}
|
|
1218 |
return null;
|
|
1219 |
}
|
|
1220 |
|
|
1221 |
/** TypeArguments = "<" TypeArgument {"," TypeArgument} ">"
|
|
1222 |
*/
|
|
1223 |
List<JCExpression> typeArguments() {
|
|
1224 |
ListBuffer<JCExpression> args = lb();
|
|
1225 |
if (S.token() == LT) {
|
|
1226 |
S.nextToken();
|
|
1227 |
args.append(((mode & EXPR) == 0) ? typeArgument() : type());
|
|
1228 |
while (S.token() == COMMA) {
|
|
1229 |
S.nextToken();
|
|
1230 |
args.append(((mode & EXPR) == 0) ? typeArgument() : type());
|
|
1231 |
}
|
|
1232 |
switch (S.token()) {
|
|
1233 |
case GTGTGTEQ:
|
|
1234 |
S.token(GTGTEQ);
|
|
1235 |
break;
|
|
1236 |
case GTGTEQ:
|
|
1237 |
S.token(GTEQ);
|
|
1238 |
break;
|
|
1239 |
case GTEQ:
|
|
1240 |
S.token(EQ);
|
|
1241 |
break;
|
|
1242 |
case GTGTGT:
|
|
1243 |
S.token(GTGT);
|
|
1244 |
break;
|
|
1245 |
case GTGT:
|
|
1246 |
S.token(GT);
|
|
1247 |
break;
|
|
1248 |
default:
|
|
1249 |
accept(GT);
|
|
1250 |
break;
|
|
1251 |
}
|
|
1252 |
} else {
|
|
1253 |
syntaxError(S.pos(), "expected", keywords.token2string(LT));
|
|
1254 |
}
|
|
1255 |
return args.toList();
|
|
1256 |
}
|
|
1257 |
|
|
1258 |
/** TypeArgument = Type
|
|
1259 |
* | "?"
|
|
1260 |
* | "?" EXTENDS Type {"&" Type}
|
|
1261 |
* | "?" SUPER Type
|
|
1262 |
*/
|
|
1263 |
JCExpression typeArgument() {
|
|
1264 |
if (S.token() != QUES) return type();
|
|
1265 |
int pos = S.pos();
|
|
1266 |
S.nextToken();
|
|
1267 |
if (S.token() == EXTENDS) {
|
|
1268 |
TypeBoundKind t = to(F.at(S.pos()).TypeBoundKind(BoundKind.EXTENDS));
|
|
1269 |
S.nextToken();
|
|
1270 |
return F.at(pos).Wildcard(t, type());
|
|
1271 |
} else if (S.token() == SUPER) {
|
|
1272 |
TypeBoundKind t = to(F.at(S.pos()).TypeBoundKind(BoundKind.SUPER));
|
|
1273 |
S.nextToken();
|
|
1274 |
return F.at(pos).Wildcard(t, type());
|
|
1275 |
} else if (S.token() == IDENTIFIER) {
|
|
1276 |
//error recovery
|
|
1277 |
reportSyntaxError(S.prevEndPos(), "expected3",
|
|
1278 |
keywords.token2string(GT),
|
|
1279 |
keywords.token2string(EXTENDS),
|
|
1280 |
keywords.token2string(SUPER));
|
|
1281 |
TypeBoundKind t = F.at(Position.NOPOS).TypeBoundKind(BoundKind.UNBOUND);
|
|
1282 |
JCExpression wc = toP(F.at(pos).Wildcard(t, null));
|
|
1283 |
JCIdent id = toP(F.at(S.pos()).Ident(ident()));
|
|
1284 |
return F.at(pos).Erroneous(List.<JCTree>of(wc, id));
|
|
1285 |
} else {
|
|
1286 |
TypeBoundKind t = F.at(Position.NOPOS).TypeBoundKind(BoundKind.UNBOUND);
|
|
1287 |
return toP(F.at(pos).Wildcard(t, null));
|
|
1288 |
}
|
|
1289 |
}
|
|
1290 |
|
|
1291 |
JCTypeApply typeArguments(JCExpression t) {
|
|
1292 |
int pos = S.pos();
|
|
1293 |
List<JCExpression> args = typeArguments();
|
|
1294 |
return toP(F.at(pos).TypeApply(t, args));
|
|
1295 |
}
|
|
1296 |
|
|
1297 |
/** BracketsOpt = {"[" "]"}
|
|
1298 |
*/
|
|
1299 |
private JCExpression bracketsOpt(JCExpression t) {
|
|
1300 |
if (S.token() == LBRACKET) {
|
|
1301 |
int pos = S.pos();
|
|
1302 |
S.nextToken();
|
|
1303 |
t = bracketsOptCont(t, pos);
|
|
1304 |
F.at(pos);
|
|
1305 |
}
|
|
1306 |
return t;
|
|
1307 |
}
|
|
1308 |
|
|
1309 |
private JCArrayTypeTree bracketsOptCont(JCExpression t, int pos) {
|
|
1310 |
accept(RBRACKET);
|
|
1311 |
t = bracketsOpt(t);
|
|
1312 |
return toP(F.at(pos).TypeArray(t));
|
|
1313 |
}
|
|
1314 |
|
|
1315 |
/** BracketsSuffixExpr = "." CLASS
|
|
1316 |
* BracketsSuffixType =
|
|
1317 |
*/
|
|
1318 |
JCExpression bracketsSuffix(JCExpression t) {
|
|
1319 |
if ((mode & EXPR) != 0 && S.token() == DOT) {
|
|
1320 |
mode = EXPR;
|
|
1321 |
int pos = S.pos();
|
|
1322 |
S.nextToken();
|
|
1323 |
accept(CLASS);
|
|
1324 |
if (S.pos() == errorEndPos) {
|
|
1325 |
// error recovery
|
|
1326 |
Name name = null;
|
|
1327 |
if (S.token() == IDENTIFIER) {
|
|
1328 |
name = S.name();
|
|
1329 |
S.nextToken();
|
|
1330 |
} else {
|
|
1331 |
name = names.error;
|
|
1332 |
}
|
|
1333 |
t = F.at(pos).Erroneous(List.<JCTree>of(toP(F.at(pos).Select(t, name))));
|
|
1334 |
} else {
|
|
1335 |
t = toP(F.at(pos).Select(t, names._class));
|
|
1336 |
}
|
|
1337 |
} else if ((mode & TYPE) != 0) {
|
|
1338 |
mode = TYPE;
|
|
1339 |
} else {
|
|
1340 |
syntaxError(S.pos(), "dot.class.expected");
|
|
1341 |
}
|
|
1342 |
return t;
|
|
1343 |
}
|
|
1344 |
|
|
1345 |
/** Creator = Qualident [TypeArguments] ( ArrayCreatorRest | ClassCreatorRest )
|
|
1346 |
*/
|
|
1347 |
JCExpression creator(int newpos, List<JCExpression> typeArgs) {
|
|
1348 |
switch (S.token()) {
|
|
1349 |
case BYTE: case SHORT: case CHAR: case INT: case LONG: case FLOAT:
|
|
1350 |
case DOUBLE: case BOOLEAN:
|
|
1351 |
if (typeArgs == null)
|
|
1352 |
return arrayCreatorRest(newpos, basicType());
|
|
1353 |
break;
|
|
1354 |
default:
|
|
1355 |
}
|
|
1356 |
JCExpression t = qualident();
|
|
1357 |
int oldmode = mode;
|
|
1358 |
mode = TYPE;
|
|
1359 |
if (S.token() == LT) {
|
|
1360 |
checkGenerics();
|
|
1361 |
t = typeArguments(t);
|
|
1362 |
}
|
|
1363 |
while (S.token() == DOT) {
|
|
1364 |
int pos = S.pos();
|
|
1365 |
S.nextToken();
|
|
1366 |
t = toP(F.at(pos).Select(t, ident()));
|
|
1367 |
if (S.token() == LT) {
|
|
1368 |
checkGenerics();
|
|
1369 |
t = typeArguments(t);
|
|
1370 |
}
|
|
1371 |
}
|
|
1372 |
mode = oldmode;
|
|
1373 |
if (S.token() == LBRACKET) {
|
|
1374 |
JCExpression e = arrayCreatorRest(newpos, t);
|
|
1375 |
if (typeArgs != null) {
|
|
1376 |
int pos = newpos;
|
|
1377 |
if (!typeArgs.isEmpty() && typeArgs.head.pos != Position.NOPOS) {
|
|
1378 |
// note: this should always happen but we should
|
|
1379 |
// not rely on this as the parser is continuously
|
|
1380 |
// modified to improve error recovery.
|
|
1381 |
pos = typeArgs.head.pos;
|
|
1382 |
}
|
|
1383 |
setErrorEndPos(S.prevEndPos());
|
|
1384 |
reportSyntaxError(pos, "cannot.create.array.with.type.arguments");
|
|
1385 |
return toP(F.at(newpos).Erroneous(typeArgs.prepend(e)));
|
|
1386 |
}
|
|
1387 |
return e;
|
|
1388 |
} else if (S.token() == LPAREN) {
|
|
1389 |
return classCreatorRest(newpos, null, typeArgs, t);
|
|
1390 |
} else {
|
|
1391 |
reportSyntaxError(S.pos(), "expected2",
|
|
1392 |
keywords.token2string(LPAREN),
|
|
1393 |
keywords.token2string(LBRACKET));
|
|
1394 |
t = toP(F.at(newpos).NewClass(null, typeArgs, t, List.<JCExpression>nil(), null));
|
|
1395 |
return toP(F.at(newpos).Erroneous(List.<JCTree>of(t)));
|
|
1396 |
}
|
|
1397 |
}
|
|
1398 |
|
|
1399 |
/** InnerCreator = Ident [TypeArguments] ClassCreatorRest
|
|
1400 |
*/
|
|
1401 |
JCExpression innerCreator(int newpos, List<JCExpression> typeArgs, JCExpression encl) {
|
|
1402 |
JCExpression t = toP(F.at(S.pos()).Ident(ident()));
|
|
1403 |
if (S.token() == LT) {
|
|
1404 |
checkGenerics();
|
|
1405 |
t = typeArguments(t);
|
|
1406 |
}
|
|
1407 |
return classCreatorRest(newpos, encl, typeArgs, t);
|
|
1408 |
}
|
|
1409 |
|
|
1410 |
/** ArrayCreatorRest = "[" ( "]" BracketsOpt ArrayInitializer
|
|
1411 |
* | Expression "]" {"[" Expression "]"} BracketsOpt )
|
|
1412 |
*/
|
|
1413 |
JCExpression arrayCreatorRest(int newpos, JCExpression elemtype) {
|
|
1414 |
accept(LBRACKET);
|
|
1415 |
if (S.token() == RBRACKET) {
|
|
1416 |
accept(RBRACKET);
|
|
1417 |
elemtype = bracketsOpt(elemtype);
|
|
1418 |
if (S.token() == LBRACE) {
|
|
1419 |
return arrayInitializer(newpos, elemtype);
|
|
1420 |
} else {
|
|
1421 |
return syntaxError(S.pos(), "array.dimension.missing");
|
|
1422 |
}
|
|
1423 |
} else {
|
|
1424 |
ListBuffer<JCExpression> dims = new ListBuffer<JCExpression>();
|
|
1425 |
dims.append(expression());
|
|
1426 |
accept(RBRACKET);
|
|
1427 |
while (S.token() == LBRACKET) {
|
|
1428 |
int pos = S.pos();
|
|
1429 |
S.nextToken();
|
|
1430 |
if (S.token() == RBRACKET) {
|
|
1431 |
elemtype = bracketsOptCont(elemtype, pos);
|
|
1432 |
} else {
|
|
1433 |
dims.append(expression());
|
|
1434 |
accept(RBRACKET);
|
|
1435 |
}
|
|
1436 |
}
|
|
1437 |
return toP(F.at(newpos).NewArray(elemtype, dims.toList(), null));
|
|
1438 |
}
|
|
1439 |
}
|
|
1440 |
|
|
1441 |
/** ClassCreatorRest = Arguments [ClassBody]
|
|
1442 |
*/
|
|
1443 |
JCExpression classCreatorRest(int newpos,
|
|
1444 |
JCExpression encl,
|
|
1445 |
List<JCExpression> typeArgs,
|
|
1446 |
JCExpression t)
|
|
1447 |
{
|
|
1448 |
List<JCExpression> args = arguments();
|
|
1449 |
JCClassDecl body = null;
|
|
1450 |
if (S.token() == LBRACE) {
|
|
1451 |
int pos = S.pos();
|
|
1452 |
List<JCTree> defs = classOrInterfaceBody(names.empty, false);
|
|
1453 |
JCModifiers mods = F.at(Position.NOPOS).Modifiers(0);
|
|
1454 |
body = toP(F.at(pos).AnonymousClassDef(mods, defs));
|
|
1455 |
}
|
|
1456 |
return toP(F.at(newpos).NewClass(encl, typeArgs, t, args, body));
|
|
1457 |
}
|
|
1458 |
|
|
1459 |
/** ArrayInitializer = "{" [VariableInitializer {"," VariableInitializer}] [","] "}"
|
|
1460 |
*/
|
|
1461 |
JCExpression arrayInitializer(int newpos, JCExpression t) {
|
|
1462 |
accept(LBRACE);
|
|
1463 |
ListBuffer<JCExpression> elems = new ListBuffer<JCExpression>();
|
|
1464 |
if (S.token() == COMMA) {
|
|
1465 |
S.nextToken();
|
|
1466 |
} else if (S.token() != RBRACE) {
|
|
1467 |
elems.append(variableInitializer());
|
|
1468 |
while (S.token() == COMMA) {
|
|
1469 |
S.nextToken();
|
|
1470 |
if (S.token() == RBRACE) break;
|
|
1471 |
elems.append(variableInitializer());
|
|
1472 |
}
|
|
1473 |
}
|
|
1474 |
accept(RBRACE);
|
|
1475 |
return toP(F.at(newpos).NewArray(t, List.<JCExpression>nil(), elems.toList()));
|
|
1476 |
}
|
|
1477 |
|
|
1478 |
/** VariableInitializer = ArrayInitializer | Expression
|
|
1479 |
*/
|
|
1480 |
public JCExpression variableInitializer() {
|
|
1481 |
return S.token() == LBRACE ? arrayInitializer(S.pos(), null) : expression();
|
|
1482 |
}
|
|
1483 |
|
|
1484 |
/** ParExpression = "(" Expression ")"
|
|
1485 |
*/
|
|
1486 |
JCExpression parExpression() {
|
|
1487 |
accept(LPAREN);
|
|
1488 |
JCExpression t = expression();
|
|
1489 |
accept(RPAREN);
|
|
1490 |
return t;
|
|
1491 |
}
|
|
1492 |
|
|
1493 |
/** Block = "{" BlockStatements "}"
|
|
1494 |
*/
|
|
1495 |
JCBlock block(int pos, long flags) {
|
|
1496 |
accept(LBRACE);
|
|
1497 |
List<JCStatement> stats = blockStatements();
|
|
1498 |
JCBlock t = F.at(pos).Block(flags, stats);
|
|
1499 |
while (S.token() == CASE || S.token() == DEFAULT) {
|
|
1500 |
syntaxError("orphaned", keywords.token2string(S.token()));
|
|
1501 |
switchBlockStatementGroups();
|
|
1502 |
}
|
|
1503 |
// the Block node has a field "endpos" for first char of last token, which is
|
|
1504 |
// usually but not necessarily the last char of the last token.
|
|
1505 |
t.endpos = S.pos();
|
|
1506 |
accept(RBRACE);
|
|
1507 |
return toP(t);
|
|
1508 |
}
|
|
1509 |
|
|
1510 |
public JCBlock block() {
|
|
1511 |
return block(S.pos(), 0);
|
|
1512 |
}
|
|
1513 |
|
|
1514 |
/** BlockStatements = { BlockStatement }
|
|
1515 |
* BlockStatement = LocalVariableDeclarationStatement
|
|
1516 |
* | ClassOrInterfaceOrEnumDeclaration
|
|
1517 |
* | [Ident ":"] Statement
|
|
1518 |
* LocalVariableDeclarationStatement
|
|
1519 |
* = { FINAL | '@' Annotation } Type VariableDeclarators ";"
|
|
1520 |
*/
|
|
1521 |
@SuppressWarnings("fallthrough")
|
|
1522 |
List<JCStatement> blockStatements() {
|
|
1523 |
//todo: skip to anchor on error(?)
|
|
1524 |
int lastErrPos = -1;
|
|
1525 |
ListBuffer<JCStatement> stats = new ListBuffer<JCStatement>();
|
|
1526 |
while (true) {
|
|
1527 |
int pos = S.pos();
|
|
1528 |
switch (S.token()) {
|
|
1529 |
case RBRACE: case CASE: case DEFAULT: case EOF:
|
|
1530 |
return stats.toList();
|
|
1531 |
case LBRACE: case IF: case FOR: case WHILE: case DO: case TRY:
|
|
1532 |
case SWITCH: case SYNCHRONIZED: case RETURN: case THROW: case BREAK:
|
|
1533 |
case CONTINUE: case SEMI: case ELSE: case FINALLY: case CATCH:
|
|
1534 |
stats.append(statement());
|
|
1535 |
break;
|
|
1536 |
case MONKEYS_AT:
|
|
1537 |
case FINAL: {
|
|
1538 |
String dc = S.docComment();
|
|
1539 |
JCModifiers mods = modifiersOpt();
|
|
1540 |
if (S.token() == INTERFACE ||
|
|
1541 |
S.token() == CLASS ||
|
|
1542 |
allowEnums && S.token() == ENUM) {
|
|
1543 |
stats.append(classOrInterfaceOrEnumDeclaration(mods, dc));
|
|
1544 |
} else {
|
|
1545 |
JCExpression t = type();
|
|
1546 |
stats.appendList(variableDeclarators(mods, t,
|
|
1547 |
new ListBuffer<JCStatement>()));
|
|
1548 |
// A "LocalVariableDeclarationStatement" subsumes the terminating semicolon
|
|
1549 |
storeEnd(stats.elems.last(), S.endPos());
|
|
1550 |
accept(SEMI);
|
|
1551 |
}
|
|
1552 |
break;
|
|
1553 |
}
|
|
1554 |
case ABSTRACT: case STRICTFP: {
|
|
1555 |
String dc = S.docComment();
|
|
1556 |
JCModifiers mods = modifiersOpt();
|
|
1557 |
stats.append(classOrInterfaceOrEnumDeclaration(mods, dc));
|
|
1558 |
break;
|
|
1559 |
}
|
|
1560 |
case INTERFACE:
|
|
1561 |
case CLASS:
|
|
1562 |
stats.append(classOrInterfaceOrEnumDeclaration(modifiersOpt(),
|
|
1563 |
S.docComment()));
|
|
1564 |
break;
|
|
1565 |
case ENUM:
|
|
1566 |
case ASSERT:
|
|
1567 |
if (allowEnums && S.token() == ENUM) {
|
|
1568 |
log.error(S.pos(), "local.enum");
|
|
1569 |
stats.
|
|
1570 |
append(classOrInterfaceOrEnumDeclaration(modifiersOpt(),
|
|
1571 |
S.docComment()));
|
|
1572 |
break;
|
|
1573 |
} else if (allowAsserts && S.token() == ASSERT) {
|
|
1574 |
stats.append(statement());
|
|
1575 |
break;
|
|
1576 |
}
|
|
1577 |
/* fall through to default */
|
|
1578 |
default:
|
|
1579 |
Name name = S.name();
|
|
1580 |
JCExpression t = term(EXPR | TYPE);
|
|
1581 |
if (S.token() == COLON && t.getTag() == JCTree.IDENT) {
|
|
1582 |
S.nextToken();
|
|
1583 |
JCStatement stat = statement();
|
|
1584 |
stats.append(F.at(pos).Labelled(name, stat));
|
|
1585 |
} else if ((lastmode & TYPE) != 0 &&
|
|
1586 |
(S.token() == IDENTIFIER ||
|
|
1587 |
S.token() == ASSERT ||
|
|
1588 |
S.token() == ENUM)) {
|
|
1589 |
pos = S.pos();
|
|
1590 |
JCModifiers mods = F.at(Position.NOPOS).Modifiers(0);
|
|
1591 |
F.at(pos);
|
|
1592 |
stats.appendList(variableDeclarators(mods, t,
|
|
1593 |
new ListBuffer<JCStatement>()));
|
|
1594 |
// A "LocalVariableDeclarationStatement" subsumes the terminating semicolon
|
|
1595 |
storeEnd(stats.elems.last(), S.endPos());
|
|
1596 |
accept(SEMI);
|
|
1597 |
} else {
|
|
1598 |
// This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon
|
|
1599 |
stats.append(to(F.at(pos).Exec(checkExprStat(t))));
|
|
1600 |
accept(SEMI);
|
|
1601 |
}
|
|
1602 |
}
|
|
1603 |
|
|
1604 |
// error recovery
|
|
1605 |
if (S.pos() == lastErrPos)
|
|
1606 |
return stats.toList();
|
|
1607 |
if (S.pos() <= errorEndPos) {
|
|
1608 |
skip(false, true, true, true);
|
|
1609 |
lastErrPos = S.pos();
|
|
1610 |
}
|
|
1611 |
|
|
1612 |
// ensure no dangling /** @deprecated */ active
|
|
1613 |
S.resetDeprecatedFlag();
|
|
1614 |
}
|
|
1615 |
}
|
|
1616 |
|
|
1617 |
/** Statement =
|
|
1618 |
* Block
|
|
1619 |
* | IF ParExpression Statement [ELSE Statement]
|
|
1620 |
* | FOR "(" ForInitOpt ";" [Expression] ";" ForUpdateOpt ")" Statement
|
|
1621 |
* | FOR "(" FormalParameter : Expression ")" Statement
|
|
1622 |
* | WHILE ParExpression Statement
|
|
1623 |
* | DO Statement WHILE ParExpression ";"
|
|
1624 |
* | TRY Block ( Catches | [Catches] FinallyPart )
|
|
1625 |
* | SWITCH ParExpression "{" SwitchBlockStatementGroups "}"
|
|
1626 |
* | SYNCHRONIZED ParExpression Block
|
|
1627 |
* | RETURN [Expression] ";"
|
|
1628 |
* | THROW Expression ";"
|
|
1629 |
* | BREAK [Ident] ";"
|
|
1630 |
* | CONTINUE [Ident] ";"
|
|
1631 |
* | ASSERT Expression [ ":" Expression ] ";"
|
|
1632 |
* | ";"
|
|
1633 |
* | ExpressionStatement
|
|
1634 |
* | Ident ":" Statement
|
|
1635 |
*/
|
|
1636 |
@SuppressWarnings("fallthrough")
|
|
1637 |
public JCStatement statement() {
|
|
1638 |
int pos = S.pos();
|
|
1639 |
switch (S.token()) {
|
|
1640 |
case LBRACE:
|
|
1641 |
return block();
|
|
1642 |
case IF: {
|
|
1643 |
S.nextToken();
|
|
1644 |
JCExpression cond = parExpression();
|
|
1645 |
JCStatement thenpart = statement();
|
|
1646 |
JCStatement elsepart = null;
|
|
1647 |
if (S.token() == ELSE) {
|
|
1648 |
S.nextToken();
|
|
1649 |
elsepart = statement();
|
|
1650 |
}
|
|
1651 |
return F.at(pos).If(cond, thenpart, elsepart);
|
|
1652 |
}
|
|
1653 |
case FOR: {
|
|
1654 |
S.nextToken();
|
|
1655 |
accept(LPAREN);
|
|
1656 |
List<JCStatement> inits = S.token() == SEMI ? List.<JCStatement>nil() : forInit();
|
|
1657 |
if (inits.length() == 1 &&
|
|
1658 |
inits.head.getTag() == JCTree.VARDEF &&
|
|
1659 |
((JCVariableDecl) inits.head).init == null &&
|
|
1660 |
S.token() == COLON) {
|
|
1661 |
checkForeach();
|
|
1662 |
JCVariableDecl var = (JCVariableDecl)inits.head;
|
|
1663 |
accept(COLON);
|
|
1664 |
JCExpression expr = expression();
|
|
1665 |
accept(RPAREN);
|
|
1666 |
JCStatement body = statement();
|
|
1667 |
return F.at(pos).ForeachLoop(var, expr, body);
|
|
1668 |
} else {
|
|
1669 |
accept(SEMI);
|
|
1670 |
JCExpression cond = S.token() == SEMI ? null : expression();
|
|
1671 |
accept(SEMI);
|
|
1672 |
List<JCExpressionStatement> steps = S.token() == RPAREN ? List.<JCExpressionStatement>nil() : forUpdate();
|
|
1673 |
accept(RPAREN);
|
|
1674 |
JCStatement body = statement();
|
|
1675 |
return F.at(pos).ForLoop(inits, cond, steps, body);
|
|
1676 |
}
|
|
1677 |
}
|
|
1678 |
case WHILE: {
|
|
1679 |
S.nextToken();
|
|
1680 |
JCExpression cond = parExpression();
|
|
1681 |
JCStatement body = statement();
|
|
1682 |
return F.at(pos).WhileLoop(cond, body);
|
|
1683 |
}
|
|
1684 |
case DO: {
|
|
1685 |
S.nextToken();
|
|
1686 |
JCStatement body = statement();
|
|
1687 |
accept(WHILE);
|
|
1688 |
JCExpression cond = parExpression();
|
|
1689 |
JCDoWhileLoop t = to(F.at(pos).DoLoop(body, cond));
|
|
1690 |
accept(SEMI);
|
|
1691 |
return t;
|
|
1692 |
}
|
|
1693 |
case TRY: {
|
|
1694 |
S.nextToken();
|
|
1695 |
JCBlock body = block();
|
|
1696 |
ListBuffer<JCCatch> catchers = new ListBuffer<JCCatch>();
|
|
1697 |
JCBlock finalizer = null;
|
|
1698 |
if (S.token() == CATCH || S.token() == FINALLY) {
|
|
1699 |
while (S.token() == CATCH) catchers.append(catchClause());
|
|
1700 |
if (S.token() == FINALLY) {
|
|
1701 |
S.nextToken();
|
|
1702 |
finalizer = block();
|
|
1703 |
}
|
|
1704 |
} else {
|
|
1705 |
log.error(pos, "try.without.catch.or.finally");
|
|
1706 |
}
|
|
1707 |
return F.at(pos).Try(body, catchers.toList(), finalizer);
|
|
1708 |
}
|
|
1709 |
case SWITCH: {
|
|
1710 |
S.nextToken();
|
|
1711 |
JCExpression selector = parExpression();
|
|
1712 |
accept(LBRACE);
|
|
1713 |
List<JCCase> cases = switchBlockStatementGroups();
|
|
1714 |
JCSwitch t = to(F.at(pos).Switch(selector, cases));
|
|
1715 |
accept(RBRACE);
|
|
1716 |
return t;
|
|
1717 |
}
|
|
1718 |
case SYNCHRONIZED: {
|
|
1719 |
S.nextToken();
|
|
1720 |
JCExpression lock = parExpression();
|
|
1721 |
JCBlock body = block();
|
|
1722 |
return F.at(pos).Synchronized(lock, body);
|
|
1723 |
}
|
|
1724 |
case RETURN: {
|
|
1725 |
S.nextToken();
|
|
1726 |
JCExpression result = S.token() == SEMI ? null : expression();
|
|
1727 |
JCReturn t = to(F.at(pos).Return(result));
|
|
1728 |
accept(SEMI);
|
|
1729 |
return t;
|
|
1730 |
}
|
|
1731 |
case THROW: {
|
|
1732 |
S.nextToken();
|
|
1733 |
JCExpression exc = expression();
|
|
1734 |
JCThrow t = to(F.at(pos).Throw(exc));
|
|
1735 |
accept(SEMI);
|
|
1736 |
return t;
|
|
1737 |
}
|
|
1738 |
case BREAK: {
|
|
1739 |
S.nextToken();
|
|
1740 |
Name label = (S.token() == IDENTIFIER || S.token() == ASSERT || S.token() == ENUM) ? ident() : null;
|
|
1741 |
JCBreak t = to(F.at(pos).Break(label));
|
|
1742 |
accept(SEMI);
|
|
1743 |
return t;
|
|
1744 |
}
|
|
1745 |
case CONTINUE: {
|
|
1746 |
S.nextToken();
|
|
1747 |
Name label = (S.token() == IDENTIFIER || S.token() == ASSERT || S.token() == ENUM) ? ident() : null;
|
|
1748 |
JCContinue t = to(F.at(pos).Continue(label));
|
|
1749 |
accept(SEMI);
|
|
1750 |
return t;
|
|
1751 |
}
|
|
1752 |
case SEMI:
|
|
1753 |
S.nextToken();
|
|
1754 |
return toP(F.at(pos).Skip());
|
|
1755 |
case ELSE:
|
|
1756 |
return toP(F.Exec(syntaxError("else.without.if")));
|
|
1757 |
case FINALLY:
|
|
1758 |
return toP(F.Exec(syntaxError("finally.without.try")));
|
|
1759 |
case CATCH:
|
|
1760 |
return toP(F.Exec(syntaxError("catch.without.try")));
|
|
1761 |
case ASSERT: {
|
|
1762 |
if (allowAsserts && S.token() == ASSERT) {
|
|
1763 |
S.nextToken();
|
|
1764 |
JCExpression assertion = expression();
|
|
1765 |
JCExpression message = null;
|
|
1766 |
if (S.token() == COLON) {
|
|
1767 |
S.nextToken();
|
|
1768 |
message = expression();
|
|
1769 |
}
|
|
1770 |
JCAssert t = to(F.at(pos).Assert(assertion, message));
|
|
1771 |
accept(SEMI);
|
|
1772 |
return t;
|
|
1773 |
}
|
|
1774 |
/* else fall through to default case */
|
|
1775 |
}
|
|
1776 |
case ENUM:
|
|
1777 |
default:
|
|
1778 |
Name name = S.name();
|
|
1779 |
JCExpression expr = expression();
|
|
1780 |
if (S.token() == COLON && expr.getTag() == JCTree.IDENT) {
|
|
1781 |
S.nextToken();
|
|
1782 |
JCStatement stat = statement();
|
|
1783 |
return F.at(pos).Labelled(name, stat);
|
|
1784 |
} else {
|
|
1785 |
// This Exec is an "ExpressionStatement"; it subsumes the terminating semicolon
|
|
1786 |
JCExpressionStatement stat = to(F.at(pos).Exec(checkExprStat(expr)));
|
|
1787 |
accept(SEMI);
|
|
1788 |
return stat;
|
|
1789 |
}
|
|
1790 |
}
|
|
1791 |
}
|
|
1792 |
|
|
1793 |
/** CatchClause = CATCH "(" FormalParameter ")" Block
|
|
1794 |
*/
|
|
1795 |
JCCatch catchClause() {
|
|
1796 |
int pos = S.pos();
|
|
1797 |
accept(CATCH);
|
|
1798 |
accept(LPAREN);
|
|
1799 |
JCVariableDecl formal =
|
|
1800 |
variableDeclaratorId(optFinal(Flags.PARAMETER),
|
|
1801 |
qualident());
|
|
1802 |
accept(RPAREN);
|
|
1803 |
JCBlock body = block();
|
|
1804 |
return F.at(pos).Catch(formal, body);
|
|
1805 |
}
|
|
1806 |
|
|
1807 |
/** SwitchBlockStatementGroups = { SwitchBlockStatementGroup }
|
|
1808 |
* SwitchBlockStatementGroup = SwitchLabel BlockStatements
|
|
1809 |
* SwitchLabel = CASE ConstantExpression ":" | DEFAULT ":"
|
|
1810 |
*/
|
|
1811 |
List<JCCase> switchBlockStatementGroups() {
|
|
1812 |
ListBuffer<JCCase> cases = new ListBuffer<JCCase>();
|
|
1813 |
while (true) {
|
|
1814 |
int pos = S.pos();
|
|
1815 |
switch (S.token()) {
|
|
1816 |
case CASE: {
|
|
1817 |
S.nextToken();
|
|
1818 |
JCExpression pat = expression();
|
|
1819 |
accept(COLON);
|
|
1820 |
List<JCStatement> stats = blockStatements();
|
|
1821 |
JCCase c = F.at(pos).Case(pat, stats);
|
|
1822 |
if (stats.isEmpty())
|
|
1823 |
storeEnd(c, S.prevEndPos());
|
|
1824 |
cases.append(c);
|
|
1825 |
break;
|
|
1826 |
}
|
|
1827 |
case DEFAULT: {
|
|
1828 |
S.nextToken();
|
|
1829 |
accept(COLON);
|
|
1830 |
List<JCStatement> stats = blockStatements();
|
|
1831 |
JCCase c = F.at(pos).Case(null, stats);
|
|
1832 |
if (stats.isEmpty())
|
|
1833 |
storeEnd(c, S.prevEndPos());
|
|
1834 |
cases.append(c);
|
|
1835 |
break;
|
|
1836 |
}
|
|
1837 |
case RBRACE: case EOF:
|
|
1838 |
return cases.toList();
|
|
1839 |
default:
|
|
1840 |
S.nextToken(); // to ensure progress
|
|
1841 |
syntaxError(pos, "expected3",
|
|
1842 |
keywords.token2string(CASE),
|
|
1843 |
keywords.token2string(DEFAULT),
|
|
1844 |
keywords.token2string(RBRACE));
|
|
1845 |
}
|
|
1846 |
}
|
|
1847 |
}
|
|
1848 |
|
|
1849 |
/** MoreStatementExpressions = { COMMA StatementExpression }
|
|
1850 |
*/
|
|
1851 |
<T extends ListBuffer<? super JCExpressionStatement>> T moreStatementExpressions(int pos,
|
|
1852 |
JCExpression first,
|
|
1853 |
T stats) {
|
|
1854 |
// This Exec is a "StatementExpression"; it subsumes no terminating token
|
|
1855 |
stats.append(toP(F.at(pos).Exec(checkExprStat(first))));
|
|
1856 |
while (S.token() == COMMA) {
|
|
1857 |
S.nextToken();
|
|
1858 |
pos = S.pos();
|
|
1859 |
JCExpression t = expression();
|
|
1860 |
// This Exec is a "StatementExpression"; it subsumes no terminating token
|
|
1861 |
stats.append(toP(F.at(pos).Exec(checkExprStat(t))));
|
|
1862 |
}
|
|
1863 |
return stats;
|
|
1864 |
}
|
|
1865 |
|
|
1866 |
/** ForInit = StatementExpression MoreStatementExpressions
|
|
1867 |
* | { FINAL | '@' Annotation } Type VariableDeclarators
|
|
1868 |
*/
|
|
1869 |
List<JCStatement> forInit() {
|
|
1870 |
ListBuffer<JCStatement> stats = lb();
|
|
1871 |
int pos = S.pos();
|
|
1872 |
if (S.token() == FINAL || S.token() == MONKEYS_AT) {
|
|
1873 |
return variableDeclarators(optFinal(0), type(), stats).toList();
|
|
1874 |
} else {
|
|
1875 |
JCExpression t = term(EXPR | TYPE);
|
|
1876 |
if ((lastmode & TYPE) != 0 &&
|
|
1877 |
(S.token() == IDENTIFIER || S.token() == ASSERT || S.token() == ENUM))
|
|
1878 |
return variableDeclarators(modifiersOpt(), t, stats).toList();
|
|
1879 |
else
|
|
1880 |
return moreStatementExpressions(pos, t, stats).toList();
|
|
1881 |
}
|
|
1882 |
}
|
|
1883 |
|
|
1884 |
/** ForUpdate = StatementExpression MoreStatementExpressions
|
|
1885 |
*/
|
|
1886 |
List<JCExpressionStatement> forUpdate() {
|
|
1887 |
return moreStatementExpressions(S.pos(),
|
|
1888 |
expression(),
|
|
1889 |
new ListBuffer<JCExpressionStatement>()).toList();
|
|
1890 |
}
|
|
1891 |
|
|
1892 |
/** AnnotationsOpt = { '@' Annotation }
|
|
1893 |
*/
|
|
1894 |
List<JCAnnotation> annotationsOpt() {
|
|
1895 |
if (S.token() != MONKEYS_AT) return List.nil(); // optimization
|
|
1896 |
ListBuffer<JCAnnotation> buf = new ListBuffer<JCAnnotation>();
|
|
1897 |
while (S.token() == MONKEYS_AT) {
|
|
1898 |
int pos = S.pos();
|
|
1899 |
S.nextToken();
|
|
1900 |
buf.append(annotation(pos));
|
|
1901 |
}
|
|
1902 |
return buf.toList();
|
|
1903 |
}
|
|
1904 |
|
|
1905 |
/** ModifiersOpt = { Modifier }
|
|
1906 |
* Modifier = PUBLIC | PROTECTED | PRIVATE | STATIC | ABSTRACT | FINAL
|
|
1907 |
* | NATIVE | SYNCHRONIZED | TRANSIENT | VOLATILE | "@"
|
|
1908 |
* | "@" Annotation
|
|
1909 |
*/
|
|
1910 |
JCModifiers modifiersOpt() {
|
|
1911 |
return modifiersOpt(null);
|
|
1912 |
}
|
|
1913 |
JCModifiers modifiersOpt(JCModifiers partial) {
|
|
1914 |
long flags = (partial == null) ? 0 : partial.flags;
|
|
1915 |
if (S.deprecatedFlag()) {
|
|
1916 |
flags |= Flags.DEPRECATED;
|
|
1917 |
S.resetDeprecatedFlag();
|
|
1918 |
}
|
|
1919 |
ListBuffer<JCAnnotation> annotations = new ListBuffer<JCAnnotation>();
|
|
1920 |
if (partial != null) annotations.appendList(partial.annotations);
|
|
1921 |
int pos = S.pos();
|
|
1922 |
int lastPos = Position.NOPOS;
|
|
1923 |
loop:
|
|
1924 |
while (true) {
|
|
1925 |
long flag;
|
|
1926 |
switch (S.token()) {
|
|
1927 |
case PRIVATE : flag = Flags.PRIVATE; break;
|
|
1928 |
case PROTECTED : flag = Flags.PROTECTED; break;
|
|
1929 |
case PUBLIC : flag = Flags.PUBLIC; break;
|
|
1930 |
case STATIC : flag = Flags.STATIC; break;
|
|
1931 |
case TRANSIENT : flag = Flags.TRANSIENT; break;
|
|
1932 |
case FINAL : flag = Flags.FINAL; break;
|
|
1933 |
case ABSTRACT : flag = Flags.ABSTRACT; break;
|
|
1934 |
case NATIVE : flag = Flags.NATIVE; break;
|
|
1935 |
case VOLATILE : flag = Flags.VOLATILE; break;
|
|
1936 |
case SYNCHRONIZED: flag = Flags.SYNCHRONIZED; break;
|
|
1937 |
case STRICTFP : flag = Flags.STRICTFP; break;
|
|
1938 |
case MONKEYS_AT : flag = Flags.ANNOTATION; break;
|
|
1939 |
default: break loop;
|
|
1940 |
}
|
|
1941 |
if ((flags & flag) != 0) log.error(S.pos(), "repeated.modifier");
|
|
1942 |
lastPos = S.pos();
|
|
1943 |
S.nextToken();
|
|
1944 |
if (flag == Flags.ANNOTATION) {
|
|
1945 |
checkAnnotations();
|
|
1946 |
if (S.token() != INTERFACE) {
|
|
1947 |
JCAnnotation ann = annotation(lastPos);
|
|
1948 |
// if first modifier is an annotation, set pos to annotation's.
|
|
1949 |
if (flags == 0 && annotations.isEmpty())
|
|
1950 |
pos = ann.pos;
|
|
1951 |
annotations.append(ann);
|
|
1952 |
lastPos = ann.pos;
|
|
1953 |
flag = 0;
|
|
1954 |
}
|
|
1955 |
}
|
|
1956 |
flags |= flag;
|
|
1957 |
}
|
|
1958 |
switch (S.token()) {
|
|
1959 |
case ENUM: flags |= Flags.ENUM; break;
|
|
1960 |
case INTERFACE: flags |= Flags.INTERFACE; break;
|
|
1961 |
default: break;
|
|
1962 |
}
|
|
1963 |
|
|
1964 |
/* A modifiers tree with no modifier tokens or annotations
|
|
1965 |
* has no text position. */
|
|
1966 |
if (flags == 0 && annotations.isEmpty())
|
|
1967 |
pos = Position.NOPOS;
|
|
1968 |
|
|
1969 |
JCModifiers mods = F.at(pos).Modifiers(flags, annotations.toList());
|
|
1970 |
if (pos != Position.NOPOS)
|
|
1971 |
storeEnd(mods, S.prevEndPos());
|
|
1972 |
return mods;
|
|
1973 |
}
|
|
1974 |
|
|
1975 |
/** Annotation = "@" Qualident [ "(" AnnotationFieldValues ")" ]
|
|
1976 |
* @param pos position of "@" token
|
|
1977 |
*/
|
|
1978 |
JCAnnotation annotation(int pos) {
|
|
1979 |
// accept(AT); // AT consumed by caller
|
|
1980 |
checkAnnotations();
|
|
1981 |
JCTree ident = qualident();
|
|
1982 |
List<JCExpression> fieldValues = annotationFieldValuesOpt();
|
|
1983 |
JCAnnotation ann = F.at(pos).Annotation(ident, fieldValues);
|
|
1984 |
storeEnd(ann, S.prevEndPos());
|
|
1985 |
return ann;
|
|
1986 |
}
|
|
1987 |
|
|
1988 |
List<JCExpression> annotationFieldValuesOpt() {
|
|
1989 |
return (S.token() == LPAREN) ? annotationFieldValues() : List.<JCExpression>nil();
|
|
1990 |
}
|
|
1991 |
|
|
1992 |
/** AnnotationFieldValues = "(" [ AnnotationFieldValue { "," AnnotationFieldValue } ] ")" */
|
|
1993 |
List<JCExpression> annotationFieldValues() {
|
|
1994 |
accept(LPAREN);
|
|
1995 |
ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>();
|
|
1996 |
if (S.token() != RPAREN) {
|
|
1997 |
buf.append(annotationFieldValue());
|
|
1998 |
while (S.token() == COMMA) {
|
|
1999 |
S.nextToken();
|
|
2000 |
buf.append(annotationFieldValue());
|
|
2001 |
}
|
|
2002 |
}
|
|
2003 |
accept(RPAREN);
|
|
2004 |
return buf.toList();
|
|
2005 |
}
|
|
2006 |
|
|
2007 |
/** AnnotationFieldValue = AnnotationValue
|
|
2008 |
* | Identifier "=" AnnotationValue
|
|
2009 |
*/
|
|
2010 |
JCExpression annotationFieldValue() {
|
|
2011 |
if (S.token() == IDENTIFIER) {
|
|
2012 |
mode = EXPR;
|
|
2013 |
JCExpression t1 = term1();
|
|
2014 |
if (t1.getTag() == JCTree.IDENT && S.token() == EQ) {
|
|
2015 |
int pos = S.pos();
|
|
2016 |
accept(EQ);
|
|
2017 |
return toP(F.at(pos).Assign(t1, annotationValue()));
|
|
2018 |
} else {
|
|
2019 |
return t1;
|
|
2020 |
}
|
|
2021 |
}
|
|
2022 |
return annotationValue();
|
|
2023 |
}
|
|
2024 |
|
|
2025 |
/* AnnotationValue = ConditionalExpression
|
|
2026 |
* | Annotation
|
|
2027 |
* | "{" [ AnnotationValue { "," AnnotationValue } ] "}"
|
|
2028 |
*/
|
|
2029 |
JCExpression annotationValue() {
|
|
2030 |
int pos;
|
|
2031 |
switch (S.token()) {
|
|
2032 |
case MONKEYS_AT:
|
|
2033 |
pos = S.pos();
|
|
2034 |
S.nextToken();
|
|
2035 |
return annotation(pos);
|
|
2036 |
case LBRACE:
|
|
2037 |
pos = S.pos();
|
|
2038 |
accept(LBRACE);
|
|
2039 |
ListBuffer<JCExpression> buf = new ListBuffer<JCExpression>();
|
|
2040 |
if (S.token() != RBRACE) {
|
|
2041 |
buf.append(annotationValue());
|
|
2042 |
while (S.token() == COMMA) {
|
|
2043 |
S.nextToken();
|
|
2044 |
if (S.token() == RPAREN) break;
|
|
2045 |
buf.append(annotationValue());
|
|
2046 |
}
|
|
2047 |
}
|
|
2048 |
accept(RBRACE);
|
|
2049 |
return toP(F.at(pos).NewArray(null, List.<JCExpression>nil(), buf.toList()));
|
|
2050 |
default:
|
|
2051 |
mode = EXPR;
|
|
2052 |
return term1();
|
|
2053 |
}
|
|
2054 |
}
|
|
2055 |
|
|
2056 |
/** VariableDeclarators = VariableDeclarator { "," VariableDeclarator }
|
|
2057 |
*/
|
|
2058 |
public <T extends ListBuffer<? super JCVariableDecl>> T variableDeclarators(JCModifiers mods,
|
|
2059 |
JCExpression type,
|
|
2060 |
T vdefs)
|
|
2061 |
{
|
|
2062 |
return variableDeclaratorsRest(S.pos(), mods, type, ident(), false, null, vdefs);
|
|
2063 |
}
|
|
2064 |
|
|
2065 |
/** VariableDeclaratorsRest = VariableDeclaratorRest { "," VariableDeclarator }
|
|
2066 |
* ConstantDeclaratorsRest = ConstantDeclaratorRest { "," ConstantDeclarator }
|
|
2067 |
*
|
|
2068 |
* @param reqInit Is an initializer always required?
|
|
2069 |
* @param dc The documentation comment for the variable declarations, or null.
|
|
2070 |
*/
|
|
2071 |
<T extends ListBuffer<? super JCVariableDecl>> T variableDeclaratorsRest(int pos,
|
|
2072 |
JCModifiers mods,
|
|
2073 |
JCExpression type,
|
|
2074 |
Name name,
|
|
2075 |
boolean reqInit,
|
|
2076 |
String dc,
|
|
2077 |
T vdefs)
|
|
2078 |
{
|
|
2079 |
vdefs.append(variableDeclaratorRest(pos, mods, type, name, reqInit, dc));
|
|
2080 |
while (S.token() == COMMA) {
|
|
2081 |
// All but last of multiple declarators subsume a comma
|
|
2082 |
storeEnd((JCTree)vdefs.elems.last(), S.endPos());
|
|
2083 |
S.nextToken();
|
|
2084 |
vdefs.append(variableDeclarator(mods, type, reqInit, dc));
|
|
2085 |
}
|
|
2086 |
return vdefs;
|
|
2087 |
}
|
|
2088 |
|
|
2089 |
/** VariableDeclarator = Ident VariableDeclaratorRest
|
|
2090 |
* ConstantDeclarator = Ident ConstantDeclaratorRest
|
|
2091 |
*/
|
|
2092 |
JCVariableDecl variableDeclarator(JCModifiers mods, JCExpression type, boolean reqInit, String dc) {
|
|
2093 |
return variableDeclaratorRest(S.pos(), mods, type, ident(), reqInit, dc);
|
|
2094 |
}
|
|
2095 |
|
|
2096 |
/** VariableDeclaratorRest = BracketsOpt ["=" VariableInitializer]
|
|
2097 |
* ConstantDeclaratorRest = BracketsOpt "=" VariableInitializer
|
|
2098 |
*
|
|
2099 |
* @param reqInit Is an initializer always required?
|
|
2100 |
* @param dc The documentation comment for the variable declarations, or null.
|
|
2101 |
*/
|
|
2102 |
JCVariableDecl variableDeclaratorRest(int pos, JCModifiers mods, JCExpression type, Name name,
|
|
2103 |
boolean reqInit, String dc) {
|
|
2104 |
type = bracketsOpt(type);
|
|
2105 |
JCExpression init = null;
|
|
2106 |
if (S.token() == EQ) {
|
|
2107 |
S.nextToken();
|
|
2108 |
init = variableInitializer();
|
|
2109 |
}
|
|
2110 |
else if (reqInit) syntaxError(S.pos(), "expected", keywords.token2string(EQ));
|
|
2111 |
JCVariableDecl result =
|
|
2112 |
toP(F.at(pos).VarDef(mods, name, type, init));
|
|
2113 |
attach(result, dc);
|
|
2114 |
return result;
|
|
2115 |
}
|
|
2116 |
|
|
2117 |
/** VariableDeclaratorId = Ident BracketsOpt
|
|
2118 |
*/
|
|
2119 |
JCVariableDecl variableDeclaratorId(JCModifiers mods, JCExpression type) {
|
|
2120 |
int pos = S.pos();
|
|
2121 |
Name name = ident();
|
|
2122 |
if ((mods.flags & Flags.VARARGS) == 0)
|
|
2123 |
type = bracketsOpt(type);
|
|
2124 |
return toP(F.at(pos).VarDef(mods, name, type, null));
|
|
2125 |
}
|
|
2126 |
|
|
2127 |
/** CompilationUnit = [ { "@" Annotation } PACKAGE Qualident ";"] {ImportDeclaration} {TypeDeclaration}
|
|
2128 |
*/
|
|
2129 |
public JCTree.JCCompilationUnit compilationUnit() {
|
|
2130 |
int pos = S.pos();
|
|
2131 |
JCExpression pid = null;
|
|
2132 |
String dc = S.docComment();
|
|
2133 |
JCModifiers mods = null;
|
|
2134 |
List<JCAnnotation> packageAnnotations = List.nil();
|
|
2135 |
if (S.token() == MONKEYS_AT)
|
|
2136 |
mods = modifiersOpt();
|
|
2137 |
|
|
2138 |
if (S.token() == PACKAGE) {
|
|
2139 |
if (mods != null) {
|
|
2140 |
checkNoMods(mods.flags);
|
|
2141 |
packageAnnotations = mods.annotations;
|
|
2142 |
mods = null;
|
|
2143 |
}
|
|
2144 |
S.nextToken();
|
|
2145 |
pid = qualident();
|
|
2146 |
accept(SEMI);
|
|
2147 |
}
|
|
2148 |
ListBuffer<JCTree> defs = new ListBuffer<JCTree>();
|
|
2149 |
boolean checkForImports = true;
|
|
2150 |
while (S.token() != EOF) {
|
|
2151 |
if (S.pos() <= errorEndPos) {
|
|
2152 |
// error recovery
|
|
2153 |
skip(checkForImports, false, false, false);
|
|
2154 |
if (S.token() == EOF)
|
|
2155 |
break;
|
|
2156 |
}
|
|
2157 |
if (checkForImports && mods == null && S.token() == IMPORT) {
|
|
2158 |
defs.append(importDeclaration());
|
|
2159 |
} else {
|
|
2160 |
JCTree def = typeDeclaration(mods);
|
|
2161 |
if (def instanceof JCExpressionStatement)
|
|
2162 |
def = ((JCExpressionStatement)def).expr;
|
|
2163 |
defs.append(def);
|
|
2164 |
if (def instanceof JCClassDecl)
|
|
2165 |
checkForImports = false;
|
|
2166 |
mods = null;
|
|
2167 |
}
|
|
2168 |
}
|
|
2169 |
JCTree.JCCompilationUnit toplevel = F.at(pos).TopLevel(packageAnnotations, pid, defs.toList());
|
|
2170 |
attach(toplevel, dc);
|
|
2171 |
if (defs.elems.isEmpty())
|
|
2172 |
storeEnd(toplevel, S.prevEndPos());
|
|
2173 |
if (keepDocComments) toplevel.docComments = docComments;
|
|
2174 |
return toplevel;
|
|
2175 |
}
|
|
2176 |
|
|
2177 |
/** ImportDeclaration = IMPORT [ STATIC ] Ident { "." Ident } [ "." "*" ] ";"
|
|
2178 |
*/
|
|
2179 |
JCTree importDeclaration() {
|
|
2180 |
int pos = S.pos();
|
|
2181 |
S.nextToken();
|
|
2182 |
boolean importStatic = false;
|
|
2183 |
if (S.token() == STATIC) {
|
|
2184 |
checkStaticImports();
|
|
2185 |
importStatic = true;
|
|
2186 |
S.nextToken();
|
|
2187 |
}
|
|
2188 |
JCExpression pid = toP(F.at(S.pos()).Ident(ident()));
|
|
2189 |
do {
|
|
2190 |
int pos1 = S.pos();
|
|
2191 |
accept(DOT);
|
|
2192 |
if (S.token() == STAR) {
|
|
2193 |
pid = to(F.at(pos1).Select(pid, names.asterisk));
|
|
2194 |
S.nextToken();
|
|
2195 |
break;
|
|
2196 |
} else {
|
|
2197 |
pid = toP(F.at(pos1).Select(pid, ident()));
|
|
2198 |
}
|
|
2199 |
} while (S.token() == DOT);
|
|
2200 |
accept(SEMI);
|
|
2201 |
return toP(F.at(pos).Import(pid, importStatic));
|
|
2202 |
}
|
|
2203 |
|
|
2204 |
/** TypeDeclaration = ClassOrInterfaceOrEnumDeclaration
|
|
2205 |
* | ";"
|
|
2206 |
*/
|
|
2207 |
JCTree typeDeclaration(JCModifiers mods) {
|
|
2208 |
int pos = S.pos();
|
|
2209 |
if (mods == null && S.token() == SEMI) {
|
|
2210 |
S.nextToken();
|
|
2211 |
return toP(F.at(pos).Skip());
|
|
2212 |
} else {
|
|
2213 |
String dc = S.docComment();
|
|
2214 |
return classOrInterfaceOrEnumDeclaration(modifiersOpt(mods), dc);
|
|
2215 |
}
|
|
2216 |
}
|
|
2217 |
|
|
2218 |
/** ClassOrInterfaceOrEnumDeclaration = ModifiersOpt
|
|
2219 |
* (ClassDeclaration | InterfaceDeclaration | EnumDeclaration)
|
|
2220 |
* @param mods Any modifiers starting the class or interface declaration
|
|
2221 |
* @param dc The documentation comment for the class, or null.
|
|
2222 |
*/
|
|
2223 |
JCStatement classOrInterfaceOrEnumDeclaration(JCModifiers mods, String dc) {
|
|
2224 |
if (S.token() == CLASS) {
|
|
2225 |
return classDeclaration(mods, dc);
|
|
2226 |
} else if (S.token() == INTERFACE) {
|
|
2227 |
return interfaceDeclaration(mods, dc);
|
|
2228 |
} else if (allowEnums) {
|
|
2229 |
if (S.token() == ENUM) {
|
|
2230 |
return enumDeclaration(mods, dc);
|
|
2231 |
} else {
|
|
2232 |
int pos = S.pos();
|
|
2233 |
List<JCTree> errs;
|
|
2234 |
if (S.token() == IDENTIFIER) {
|
|
2235 |
errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident())));
|
|
2236 |
setErrorEndPos(S.pos());
|
|
2237 |
} else {
|
|
2238 |
errs = List.<JCTree>of(mods);
|
|
2239 |
}
|
|
2240 |
return toP(F.Exec(syntaxError(pos, errs, "expected3",
|
|
2241 |
keywords.token2string(CLASS),
|
|
2242 |
keywords.token2string(INTERFACE),
|
|
2243 |
keywords.token2string(ENUM))));
|
|
2244 |
}
|
|
2245 |
} else {
|
|
2246 |
if (S.token() == ENUM) {
|
|
2247 |
log.error(S.pos(), "enums.not.supported.in.source", source.name);
|
|
2248 |
allowEnums = true;
|
|
2249 |
return enumDeclaration(mods, dc);
|
|
2250 |
}
|
|
2251 |
int pos = S.pos();
|
|
2252 |
List<JCTree> errs;
|
|
2253 |
if (S.token() == IDENTIFIER) {
|
|
2254 |
errs = List.<JCTree>of(mods, toP(F.at(pos).Ident(ident())));
|
|
2255 |
setErrorEndPos(S.pos());
|
|
2256 |
} else {
|
|
2257 |
errs = List.<JCTree>of(mods);
|
|
2258 |
}
|
|
2259 |
return toP(F.Exec(syntaxError(pos, errs, "expected2",
|
|
2260 |
keywords.token2string(CLASS),
|
|
2261 |
keywords.token2string(INTERFACE))));
|
|
2262 |
}
|
|
2263 |
}
|
|
2264 |
|
|
2265 |
/** ClassDeclaration = CLASS Ident TypeParametersOpt [EXTENDS Type]
|
|
2266 |
* [IMPLEMENTS TypeList] ClassBody
|
|
2267 |
* @param mods The modifiers starting the class declaration
|
|
2268 |
* @param dc The documentation comment for the class, or null.
|
|
2269 |
*/
|
|
2270 |
JCClassDecl classDeclaration(JCModifiers mods, String dc) {
|
|
2271 |
int pos = S.pos();
|
|
2272 |
accept(CLASS);
|
|
2273 |
Name name = ident();
|
|
2274 |
|
|
2275 |
List<JCTypeParameter> typarams = typeParametersOpt();
|
|
2276 |
|
|
2277 |
JCTree extending = null;
|
|
2278 |
if (S.token() == EXTENDS) {
|
|
2279 |
S.nextToken();
|
|
2280 |
extending = type();
|
|
2281 |
}
|
|
2282 |
List<JCExpression> implementing = List.nil();
|
|
2283 |
if (S.token() == IMPLEMENTS) {
|
|
2284 |
S.nextToken();
|
|
2285 |
implementing = typeList();
|
|
2286 |
}
|
|
2287 |
List<JCTree> defs = classOrInterfaceBody(name, false);
|
|
2288 |
JCClassDecl result = toP(F.at(pos).ClassDef(
|
|
2289 |
mods, name, typarams, extending, implementing, defs));
|
|
2290 |
attach(result, dc);
|
|
2291 |
return result;
|
|
2292 |
}
|
|
2293 |
|
|
2294 |
/** InterfaceDeclaration = INTERFACE Ident TypeParametersOpt
|
|
2295 |
* [EXTENDS TypeList] InterfaceBody
|
|
2296 |
* @param mods The modifiers starting the interface declaration
|
|
2297 |
* @param dc The documentation comment for the interface, or null.
|
|
2298 |
*/
|
|
2299 |
JCClassDecl interfaceDeclaration(JCModifiers mods, String dc) {
|
|
2300 |
int pos = S.pos();
|
|
2301 |
accept(INTERFACE);
|
|
2302 |
Name name = ident();
|
|
2303 |
|
|
2304 |
List<JCTypeParameter> typarams = typeParametersOpt();
|
|
2305 |
|
|
2306 |
List<JCExpression> extending = List.nil();
|
|
2307 |
if (S.token() == EXTENDS) {
|
|
2308 |
S.nextToken();
|
|
2309 |
extending = typeList();
|
|
2310 |
}
|
|
2311 |
List<JCTree> defs = classOrInterfaceBody(name, true);
|
|
2312 |
JCClassDecl result = toP(F.at(pos).ClassDef(
|
|
2313 |
mods, name, typarams, null, extending, defs));
|
|
2314 |
attach(result, dc);
|
|
2315 |
return result;
|
|
2316 |
}
|
|
2317 |
|
|
2318 |
/** EnumDeclaration = ENUM Ident [IMPLEMENTS TypeList] EnumBody
|
|
2319 |
* @param mods The modifiers starting the enum declaration
|
|
2320 |
* @param dc The documentation comment for the enum, or null.
|
|
2321 |
*/
|
|
2322 |
JCClassDecl enumDeclaration(JCModifiers mods, String dc) {
|
|
2323 |
int pos = S.pos();
|
|
2324 |
accept(ENUM);
|
|
2325 |
Name name = ident();
|
|
2326 |
|
|
2327 |
List<JCExpression> implementing = List.nil();
|
|
2328 |
if (S.token() == IMPLEMENTS) {
|
|
2329 |
S.nextToken();
|
|
2330 |
implementing = typeList();
|
|
2331 |
}
|
|
2332 |
|
|
2333 |
List<JCTree> defs = enumBody(name);
|
|
2334 |
JCModifiers newMods =
|
|
2335 |
F.at(mods.pos).Modifiers(mods.flags|Flags.ENUM, mods.annotations);
|
|
2336 |
JCClassDecl result = toP(F.at(pos).
|
|
2337 |
ClassDef(newMods, name, List.<JCTypeParameter>nil(),
|
|
2338 |
null, implementing, defs));
|
|
2339 |
attach(result, dc);
|
|
2340 |
return result;
|
|
2341 |
}
|
|
2342 |
|
|
2343 |
/** EnumBody = "{" { EnumeratorDeclarationList } [","]
|
|
2344 |
* [ ";" {ClassBodyDeclaration} ] "}"
|
|
2345 |
*/
|
|
2346 |
List<JCTree> enumBody(Name enumName) {
|
|
2347 |
accept(LBRACE);
|
|
2348 |
ListBuffer<JCTree> defs = new ListBuffer<JCTree>();
|
|
2349 |
if (S.token() == COMMA) {
|
|
2350 |
S.nextToken();
|
|
2351 |
} else if (S.token() != RBRACE && S.token() != SEMI) {
|
|
2352 |
defs.append(enumeratorDeclaration(enumName));
|
|
2353 |
while (S.token() == COMMA) {
|
|
2354 |
S.nextToken();
|
|
2355 |
if (S.token() == RBRACE || S.token() == SEMI) break;
|
|
2356 |
defs.append(enumeratorDeclaration(enumName));
|
|
2357 |
}
|
|
2358 |
if (S.token() != SEMI && S.token() != RBRACE) {
|
|
2359 |
defs.append(syntaxError(S.pos(), "expected3",
|
|
2360 |
keywords.token2string(COMMA),
|
|
2361 |
keywords.token2string(RBRACE),
|
|
2362 |
keywords.token2string(SEMI)));
|
|
2363 |
S.nextToken();
|
|
2364 |
}
|
|
2365 |
}
|
|
2366 |
if (S.token() == SEMI) {
|
|
2367 |
S.nextToken();
|
|
2368 |
while (S.token() != RBRACE && S.token() != EOF) {
|
|
2369 |
defs.appendList(classOrInterfaceBodyDeclaration(enumName,
|
|
2370 |
false));
|
|
2371 |
if (S.pos() <= errorEndPos) {
|
|
2372 |
// error recovery
|
|
2373 |
skip(false, true, true, false);
|
|
2374 |
}
|
|
2375 |
}
|
|
2376 |
}
|
|
2377 |
accept(RBRACE);
|
|
2378 |
return defs.toList();
|
|
2379 |
}
|
|
2380 |
|
|
2381 |
/** EnumeratorDeclaration = AnnotationsOpt [TypeArguments] IDENTIFIER [ Arguments ] [ "{" ClassBody "}" ]
|
|
2382 |
*/
|
|
2383 |
JCTree enumeratorDeclaration(Name enumName) {
|
|
2384 |
String dc = S.docComment();
|
|
2385 |
int flags = Flags.PUBLIC|Flags.STATIC|Flags.FINAL|Flags.ENUM;
|
|
2386 |
if (S.deprecatedFlag()) {
|
|
2387 |
flags |= Flags.DEPRECATED;
|
|
2388 |
S.resetDeprecatedFlag();
|
|
2389 |
}
|
|
2390 |
int pos = S.pos();
|
|
2391 |
List<JCAnnotation> annotations = annotationsOpt();
|
|
2392 |
JCModifiers mods = F.at(annotations.isEmpty() ? Position.NOPOS : pos).Modifiers(flags, annotations);
|
|
2393 |
List<JCExpression> typeArgs = typeArgumentsOpt();
|
|
2394 |
int identPos = S.pos();
|
|
2395 |
Name name = ident();
|
|
2396 |
int createPos = S.pos();
|
|
2397 |
List<JCExpression> args = (S.token() == LPAREN)
|
|
2398 |
? arguments() : List.<JCExpression>nil();
|
|
2399 |
JCClassDecl body = null;
|
|
2400 |
if (S.token() == LBRACE) {
|
|
2401 |
JCModifiers mods1 = F.at(Position.NOPOS).Modifiers(Flags.ENUM | Flags.STATIC);
|
|
2402 |
List<JCTree> defs = classOrInterfaceBody(names.empty, false);
|
|
2403 |
body = toP(F.at(identPos).AnonymousClassDef(mods1, defs));
|
|
2404 |
}
|
|
2405 |
if (args.isEmpty() && body == null)
|
|
2406 |
createPos = Position.NOPOS;
|
|
2407 |
JCIdent ident = F.at(Position.NOPOS).Ident(enumName);
|
|
2408 |
JCNewClass create = F.at(createPos).NewClass(null, typeArgs, ident, args, body);
|
|
2409 |
if (createPos != Position.NOPOS)
|
|
2410 |
storeEnd(create, S.prevEndPos());
|
|
2411 |
ident = F.at(Position.NOPOS).Ident(enumName);
|
|
2412 |
JCTree result = toP(F.at(pos).VarDef(mods, name, ident, create));
|
|
2413 |
attach(result, dc);
|
|
2414 |
return result;
|
|
2415 |
}
|
|
2416 |
|
|
2417 |
/** TypeList = Type {"," Type}
|
|
2418 |
*/
|
|
2419 |
List<JCExpression> typeList() {
|
|
2420 |
ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>();
|
|
2421 |
ts.append(type());
|
|
2422 |
while (S.token() == COMMA) {
|
|
2423 |
S.nextToken();
|
|
2424 |
ts.append(type());
|
|
2425 |
}
|
|
2426 |
return ts.toList();
|
|
2427 |
}
|
|
2428 |
|
|
2429 |
/** ClassBody = "{" {ClassBodyDeclaration} "}"
|
|
2430 |
* InterfaceBody = "{" {InterfaceBodyDeclaration} "}"
|
|
2431 |
*/
|
|
2432 |
List<JCTree> classOrInterfaceBody(Name className, boolean isInterface) {
|
|
2433 |
accept(LBRACE);
|
|
2434 |
if (S.pos() <= errorEndPos) {
|
|
2435 |
// error recovery
|
|
2436 |
skip(false, true, false, false);
|
|
2437 |
if (S.token() == LBRACE)
|
|
2438 |
S.nextToken();
|
|
2439 |
}
|
|
2440 |
ListBuffer<JCTree> defs = new ListBuffer<JCTree>();
|
|
2441 |
while (S.token() != RBRACE && S.token() != EOF) {
|
|
2442 |
defs.appendList(classOrInterfaceBodyDeclaration(className, isInterface));
|
|
2443 |
if (S.pos() <= errorEndPos) {
|
|
2444 |
// error recovery
|
|
2445 |
skip(false, true, true, false);
|
|
2446 |
}
|
|
2447 |
}
|
|
2448 |
accept(RBRACE);
|
|
2449 |
return defs.toList();
|
|
2450 |
}
|
|
2451 |
|
|
2452 |
/** ClassBodyDeclaration =
|
|
2453 |
* ";"
|
|
2454 |
* | [STATIC] Block
|
|
2455 |
* | ModifiersOpt
|
|
2456 |
* ( Type Ident
|
|
2457 |
* ( VariableDeclaratorsRest ";" | MethodDeclaratorRest )
|
|
2458 |
* | VOID Ident MethodDeclaratorRest
|
|
2459 |
* | TypeParameters (Type | VOID) Ident MethodDeclaratorRest
|
|
2460 |
* | Ident ConstructorDeclaratorRest
|
|
2461 |
* | TypeParameters Ident ConstructorDeclaratorRest
|
|
2462 |
* | ClassOrInterfaceOrEnumDeclaration
|
|
2463 |
* )
|
|
2464 |
* InterfaceBodyDeclaration =
|
|
2465 |
* ";"
|
|
2466 |
* | ModifiersOpt Type Ident
|
|
2467 |
* ( ConstantDeclaratorsRest | InterfaceMethodDeclaratorRest ";" )
|
|
2468 |
*/
|
|
2469 |
List<JCTree> classOrInterfaceBodyDeclaration(Name className, boolean isInterface) {
|
|
2470 |
if (S.token() == SEMI) {
|
|
2471 |
S.nextToken();
|
|
2472 |
return List.<JCTree>of(F.at(Position.NOPOS).Block(0, List.<JCStatement>nil()));
|
|
2473 |
} else {
|
|
2474 |
String dc = S.docComment();
|
|
2475 |
int pos = S.pos();
|
|
2476 |
JCModifiers mods = modifiersOpt();
|
|
2477 |
if (S.token() == CLASS ||
|
|
2478 |
S.token() == INTERFACE ||
|
|
2479 |
allowEnums && S.token() == ENUM) {
|
|
2480 |
return List.<JCTree>of(classOrInterfaceOrEnumDeclaration(mods, dc));
|
|
2481 |
} else if (S.token() == LBRACE && !isInterface &&
|
|
2482 |
(mods.flags & Flags.StandardFlags & ~Flags.STATIC) == 0 &&
|
|
2483 |
mods.annotations.isEmpty()) {
|
|
2484 |
return List.<JCTree>of(block(pos, mods.flags));
|
|
2485 |
} else {
|
|
2486 |
pos = S.pos();
|
|
2487 |
List<JCTypeParameter> typarams = typeParametersOpt();
|
|
2488 |
// Hack alert: if there are type arguments but no Modifiers, the start
|
|
2489 |
// position will be lost unless we set the Modifiers position. There
|
|
2490 |
// should be an AST node for type parameters (BugId 5005090).
|
|
2491 |
if (typarams.length() > 0 && mods.pos == Position.NOPOS) {
|
|
2492 |
mods.pos = pos;
|
|
2493 |
}
|
|
2494 |
Token token = S.token();
|
|
2495 |
Name name = S.name();
|
|
2496 |
pos = S.pos();
|
|
2497 |
JCExpression type;
|
|
2498 |
boolean isVoid = S.token() == VOID;
|
|
2499 |
if (isVoid) {
|
|
2500 |
type = to(F.at(pos).TypeIdent(TypeTags.VOID));
|
|
2501 |
S.nextToken();
|
|
2502 |
} else {
|
|
2503 |
type = type();
|
|
2504 |
}
|
|
2505 |
if (S.token() == LPAREN && !isInterface && type.getTag() == JCTree.IDENT) {
|
|
2506 |
if (isInterface || name != className)
|
|
2507 |
log.error(pos, "invalid.meth.decl.ret.type.req");
|
|
2508 |
return List.of(methodDeclaratorRest(
|
|
2509 |
pos, mods, null, names.init, typarams,
|
|
2510 |
isInterface, true, dc));
|
|
2511 |
} else {
|
|
2512 |
pos = S.pos();
|
|
2513 |
name = ident();
|
|
2514 |
if (S.token() == LPAREN) {
|
|
2515 |
return List.of(methodDeclaratorRest(
|
|
2516 |
pos, mods, type, name, typarams,
|
|
2517 |
isInterface, isVoid, dc));
|
|
2518 |
} else if (!isVoid && typarams.isEmpty()) {
|
|
2519 |
List<JCTree> defs =
|
|
2520 |
variableDeclaratorsRest(pos, mods, type, name, isInterface, dc,
|
|
2521 |
new ListBuffer<JCTree>()).toList();
|
|
2522 |
storeEnd(defs.last(), S.endPos());
|
|
2523 |
accept(SEMI);
|
|
2524 |
return defs;
|
|
2525 |
} else {
|
|
2526 |
pos = S.pos();
|
|
2527 |
List<JCTree> err = isVoid
|
|
2528 |
? List.<JCTree>of(toP(F.at(pos).MethodDef(mods, name, type, typarams,
|
|
2529 |
List.<JCVariableDecl>nil(), List.<JCExpression>nil(), null, null)))
|
|
2530 |
: null;
|
|
2531 |
return List.<JCTree>of(syntaxError(S.pos(), err, "expected", keywords.token2string(LPAREN)));
|
|
2532 |
}
|
|
2533 |
}
|
|
2534 |
}
|
|
2535 |
}
|
|
2536 |
}
|
|
2537 |
|
|
2538 |
/** MethodDeclaratorRest =
|
|
2539 |
* FormalParameters BracketsOpt [Throws TypeList] ( MethodBody | [DEFAULT AnnotationValue] ";")
|
|
2540 |
* VoidMethodDeclaratorRest =
|
|
2541 |
* FormalParameters [Throws TypeList] ( MethodBody | ";")
|
|
2542 |
* InterfaceMethodDeclaratorRest =
|
|
2543 |
* FormalParameters BracketsOpt [THROWS TypeList] ";"
|
|
2544 |
* VoidInterfaceMethodDeclaratorRest =
|
|
2545 |
* FormalParameters [THROWS TypeList] ";"
|
|
2546 |
* ConstructorDeclaratorRest =
|
|
2547 |
* "(" FormalParameterListOpt ")" [THROWS TypeList] MethodBody
|
|
2548 |
*/
|
|
2549 |
JCTree methodDeclaratorRest(int pos,
|
|
2550 |
JCModifiers mods,
|
|
2551 |
JCExpression type,
|
|
2552 |
Name name,
|
|
2553 |
List<JCTypeParameter> typarams,
|
|
2554 |
boolean isInterface, boolean isVoid,
|
|
2555 |
String dc) {
|
|
2556 |
List<JCVariableDecl> params = formalParameters();
|
|
2557 |
if (!isVoid) type = bracketsOpt(type);
|
|
2558 |
List<JCExpression> thrown = List.nil();
|
|
2559 |
if (S.token() == THROWS) {
|
|
2560 |
S.nextToken();
|
|
2561 |
thrown = qualidentList();
|
|
2562 |
}
|
|
2563 |
JCBlock body = null;
|
|
2564 |
JCExpression defaultValue;
|
|
2565 |
if (S.token() == LBRACE) {
|
|
2566 |
body = block();
|
|
2567 |
defaultValue = null;
|
|
2568 |
} else {
|
|
2569 |
if (S.token() == DEFAULT) {
|
|
2570 |
accept(DEFAULT);
|
|
2571 |
defaultValue = annotationValue();
|
|
2572 |
} else {
|
|
2573 |
defaultValue = null;
|
|
2574 |
}
|
|
2575 |
accept(SEMI);
|
|
2576 |
if (S.pos() <= errorEndPos) {
|
|
2577 |
// error recovery
|
|
2578 |
skip(false, true, false, false);
|
|
2579 |
if (S.token() == LBRACE) {
|
|
2580 |
body = block();
|
|
2581 |
}
|
|
2582 |
}
|
|
2583 |
}
|
|
2584 |
JCMethodDecl result =
|
|
2585 |
toP(F.at(pos).MethodDef(mods, name, type, typarams,
|
|
2586 |
params, thrown,
|
|
2587 |
body, defaultValue));
|
|
2588 |
attach(result, dc);
|
|
2589 |
return result;
|
|
2590 |
}
|
|
2591 |
|
|
2592 |
/** QualidentList = Qualident {"," Qualident}
|
|
2593 |
*/
|
|
2594 |
List<JCExpression> qualidentList() {
|
|
2595 |
ListBuffer<JCExpression> ts = new ListBuffer<JCExpression>();
|
|
2596 |
ts.append(qualident());
|
|
2597 |
while (S.token() == COMMA) {
|
|
2598 |
S.nextToken();
|
|
2599 |
ts.append(qualident());
|
|
2600 |
}
|
|
2601 |
return ts.toList();
|
|
2602 |
}
|
|
2603 |
|
|
2604 |
/** TypeParametersOpt = ["<" TypeParameter {"," TypeParameter} ">"]
|
|
2605 |
*/
|
|
2606 |
List<JCTypeParameter> typeParametersOpt() {
|
|
2607 |
if (S.token() == LT) {
|
|
2608 |
checkGenerics();
|
|
2609 |
ListBuffer<JCTypeParameter> typarams = new ListBuffer<JCTypeParameter>();
|
|
2610 |
S.nextToken();
|
|
2611 |
typarams.append(typeParameter());
|
|
2612 |
while (S.token() == COMMA) {
|
|
2613 |
S.nextToken();
|
|
2614 |
typarams.append(typeParameter());
|
|
2615 |
}
|
|
2616 |
accept(GT);
|
|
2617 |
return typarams.toList();
|
|
2618 |
} else {
|
|
2619 |
return List.nil();
|
|
2620 |
}
|
|
2621 |
}
|
|
2622 |
|
|
2623 |
/** TypeParameter = TypeVariable [TypeParameterBound]
|
|
2624 |
* TypeParameterBound = EXTENDS Type {"&" Type}
|
|
2625 |
* TypeVariable = Ident
|
|
2626 |
*/
|
|
2627 |
JCTypeParameter typeParameter() {
|
|
2628 |
int pos = S.pos();
|
|
2629 |
Name name = ident();
|
|
2630 |
ListBuffer<JCExpression> bounds = new ListBuffer<JCExpression>();
|
|
2631 |
if (S.token() == EXTENDS) {
|
|
2632 |
S.nextToken();
|
|
2633 |
bounds.append(type());
|
|
2634 |
while (S.token() == AMP) {
|
|
2635 |
S.nextToken();
|
|
2636 |
bounds.append(type());
|
|
2637 |
}
|
|
2638 |
}
|
|
2639 |
return toP(F.at(pos).TypeParameter(name, bounds.toList()));
|
|
2640 |
}
|
|
2641 |
|
|
2642 |
/** FormalParameters = "(" [ FormalParameterList ] ")"
|
|
2643 |
* FormalParameterList = [ FormalParameterListNovarargs , ] LastFormalParameter
|
|
2644 |
* FormalParameterListNovarargs = [ FormalParameterListNovarargs , ] FormalParameter
|
|
2645 |
*/
|
|
2646 |
List<JCVariableDecl> formalParameters() {
|
|
2647 |
ListBuffer<JCVariableDecl> params = new ListBuffer<JCVariableDecl>();
|
|
2648 |
JCVariableDecl lastParam = null;
|
|
2649 |
accept(LPAREN);
|
|
2650 |
if (S.token() != RPAREN) {
|
|
2651 |
params.append(lastParam = formalParameter());
|
|
2652 |
while ((lastParam.mods.flags & Flags.VARARGS) == 0 && S.token() == COMMA) {
|
|
2653 |
S.nextToken();
|
|
2654 |
params.append(lastParam = formalParameter());
|
|
2655 |
}
|
|
2656 |
}
|
|
2657 |
accept(RPAREN);
|
|
2658 |
return params.toList();
|
|
2659 |
}
|
|
2660 |
|
|
2661 |
JCModifiers optFinal(long flags) {
|
|
2662 |
JCModifiers mods = modifiersOpt();
|
|
2663 |
checkNoMods(mods.flags & ~(Flags.FINAL | Flags.DEPRECATED));
|
|
2664 |
mods.flags |= flags;
|
|
2665 |
return mods;
|
|
2666 |
}
|
|
2667 |
|
|
2668 |
/** FormalParameter = { FINAL | '@' Annotation } Type VariableDeclaratorId
|
|
2669 |
* LastFormalParameter = { FINAL | '@' Annotation } Type '...' Ident | FormalParameter
|
|
2670 |
*/
|
|
2671 |
JCVariableDecl formalParameter() {
|
|
2672 |
JCModifiers mods = optFinal(Flags.PARAMETER);
|
|
2673 |
JCExpression type = type();
|
|
2674 |
if (S.token() == ELLIPSIS) {
|
|
2675 |
checkVarargs();
|
|
2676 |
mods.flags |= Flags.VARARGS;
|
|
2677 |
type = to(F.at(S.pos()).TypeArray(type));
|
|
2678 |
S.nextToken();
|
|
2679 |
}
|
|
2680 |
return variableDeclaratorId(mods, type);
|
|
2681 |
}
|
|
2682 |
|
|
2683 |
/* ---------- auxiliary methods -------------- */
|
|
2684 |
|
|
2685 |
/** Check that given tree is a legal expression statement.
|
|
2686 |
*/
|
|
2687 |
protected JCExpression checkExprStat(JCExpression t) {
|
|
2688 |
switch(t.getTag()) {
|
|
2689 |
case JCTree.PREINC: case JCTree.PREDEC:
|
|
2690 |
case JCTree.POSTINC: case JCTree.POSTDEC:
|
|
2691 |
case JCTree.ASSIGN:
|
|
2692 |
case JCTree.BITOR_ASG: case JCTree.BITXOR_ASG: case JCTree.BITAND_ASG:
|
|
2693 |
case JCTree.SL_ASG: case JCTree.SR_ASG: case JCTree.USR_ASG:
|
|
2694 |
case JCTree.PLUS_ASG: case JCTree.MINUS_ASG:
|
|
2695 |
case JCTree.MUL_ASG: case JCTree.DIV_ASG: case JCTree.MOD_ASG:
|
|
2696 |
case JCTree.APPLY: case JCTree.NEWCLASS:
|
|
2697 |
case JCTree.ERRONEOUS:
|
|
2698 |
return t;
|
|
2699 |
default:
|
|
2700 |
log.error(t.pos, "not.stmt");
|
|
2701 |
return F.at(t.pos).Erroneous(List.<JCTree>of(t));
|
|
2702 |
}
|
|
2703 |
}
|
|
2704 |
|
|
2705 |
/** Return precedence of operator represented by token,
|
|
2706 |
* -1 if token is not a binary operator. @see TreeInfo.opPrec
|
|
2707 |
*/
|
|
2708 |
static int prec(Token token) {
|
|
2709 |
int oc = optag(token);
|
|
2710 |
return (oc >= 0) ? TreeInfo.opPrec(oc) : -1;
|
|
2711 |
}
|
|
2712 |
|
|
2713 |
/** Return operation tag of binary operator represented by token,
|
|
2714 |
* -1 if token is not a binary operator.
|
|
2715 |
*/
|
|
2716 |
static int optag(Token token) {
|
|
2717 |
switch (token) {
|
|
2718 |
case BARBAR:
|
|
2719 |
return JCTree.OR;
|
|
2720 |
case AMPAMP:
|
|
2721 |
return JCTree.AND;
|
|
2722 |
case BAR:
|
|
2723 |
return JCTree.BITOR;
|
|
2724 |
case BAREQ:
|
|
2725 |
return JCTree.BITOR_ASG;
|
|
2726 |
case CARET:
|
|
2727 |
return JCTree.BITXOR;
|
|
2728 |
case CARETEQ:
|
|
2729 |
return JCTree.BITXOR_ASG;
|
|
2730 |
case AMP:
|
|
2731 |
return JCTree.BITAND;
|
|
2732 |
case AMPEQ:
|
|
2733 |
return JCTree.BITAND_ASG;
|
|
2734 |
case EQEQ:
|
|
2735 |
return JCTree.EQ;
|
|
2736 |
case BANGEQ:
|
|
2737 |
return JCTree.NE;
|
|
2738 |
case LT:
|
|
2739 |
return JCTree.LT;
|
|
2740 |
case GT:
|
|
2741 |
return JCTree.GT;
|
|
2742 |
case LTEQ:
|
|
2743 |
return JCTree.LE;
|
|
2744 |
case GTEQ:
|
|
2745 |
return JCTree.GE;
|
|
2746 |
case LTLT:
|
|
2747 |
return JCTree.SL;
|
|
2748 |
case LTLTEQ:
|
|
2749 |
return JCTree.SL_ASG;
|
|
2750 |
case GTGT:
|
|
2751 |
return JCTree.SR;
|
|
2752 |
case GTGTEQ:
|
|
2753 |
return JCTree.SR_ASG;
|
|
2754 |
case GTGTGT:
|
|
2755 |
return JCTree.USR;
|
|
2756 |
case GTGTGTEQ:
|
|
2757 |
return JCTree.USR_ASG;
|
|
2758 |
case PLUS:
|
|
2759 |
return JCTree.PLUS;
|
|
2760 |
case PLUSEQ:
|
|
2761 |
return JCTree.PLUS_ASG;
|
|
2762 |
case SUB:
|
|
2763 |
return JCTree.MINUS;
|
|
2764 |
case SUBEQ:
|
|
2765 |
return JCTree.MINUS_ASG;
|
|
2766 |
case STAR:
|
|
2767 |
return JCTree.MUL;
|
|
2768 |
case STAREQ:
|
|
2769 |
return JCTree.MUL_ASG;
|
|
2770 |
case SLASH:
|
|
2771 |
return JCTree.DIV;
|
|
2772 |
case SLASHEQ:
|
|
2773 |
return JCTree.DIV_ASG;
|
|
2774 |
case PERCENT:
|
|
2775 |
return JCTree.MOD;
|
|
2776 |
case PERCENTEQ:
|
|
2777 |
return JCTree.MOD_ASG;
|
|
2778 |
case INSTANCEOF:
|
|
2779 |
return JCTree.TYPETEST;
|
|
2780 |
default:
|
|
2781 |
return -1;
|
|
2782 |
}
|
|
2783 |
}
|
|
2784 |
|
|
2785 |
/** Return operation tag of unary operator represented by token,
|
|
2786 |
* -1 if token is not a binary operator.
|
|
2787 |
*/
|
|
2788 |
static int unoptag(Token token) {
|
|
2789 |
switch (token) {
|
|
2790 |
case PLUS:
|
|
2791 |
return JCTree.POS;
|
|
2792 |
case SUB:
|
|
2793 |
return JCTree.NEG;
|
|
2794 |
case BANG:
|
|
2795 |
return JCTree.NOT;
|
|
2796 |
case TILDE:
|
|
2797 |
return JCTree.COMPL;
|
|
2798 |
case PLUSPLUS:
|
|
2799 |
return JCTree.PREINC;
|
|
2800 |
case SUBSUB:
|
|
2801 |
return JCTree.PREDEC;
|
|
2802 |
default:
|
|
2803 |
return -1;
|
|
2804 |
}
|
|
2805 |
}
|
|
2806 |
|
|
2807 |
/** Return type tag of basic type represented by token,
|
|
2808 |
* -1 if token is not a basic type identifier.
|
|
2809 |
*/
|
|
2810 |
static int typetag(Token token) {
|
|
2811 |
switch (token) {
|
|
2812 |
case BYTE:
|
|
2813 |
return TypeTags.BYTE;
|
|
2814 |
case CHAR:
|
|
2815 |
return TypeTags.CHAR;
|
|
2816 |
case SHORT:
|
|
2817 |
return TypeTags.SHORT;
|
|
2818 |
case INT:
|
|
2819 |
return TypeTags.INT;
|
|
2820 |
case LONG:
|
|
2821 |
return TypeTags.LONG;
|
|
2822 |
case FLOAT:
|
|
2823 |
return TypeTags.FLOAT;
|
|
2824 |
case DOUBLE:
|
|
2825 |
return TypeTags.DOUBLE;
|
|
2826 |
case BOOLEAN:
|
|
2827 |
return TypeTags.BOOLEAN;
|
|
2828 |
default:
|
|
2829 |
return -1;
|
|
2830 |
}
|
|
2831 |
}
|
|
2832 |
|
|
2833 |
void checkGenerics() {
|
|
2834 |
if (!allowGenerics) {
|
|
2835 |
log.error(S.pos(), "generics.not.supported.in.source", source.name);
|
|
2836 |
allowGenerics = true;
|
|
2837 |
}
|
|
2838 |
}
|
|
2839 |
void checkVarargs() {
|
|
2840 |
if (!allowVarargs) {
|
|
2841 |
log.error(S.pos(), "varargs.not.supported.in.source", source.name);
|
|
2842 |
allowVarargs = true;
|
|
2843 |
}
|
|
2844 |
}
|
|
2845 |
void checkForeach() {
|
|
2846 |
if (!allowForeach) {
|
|
2847 |
log.error(S.pos(), "foreach.not.supported.in.source", source.name);
|
|
2848 |
allowForeach = true;
|
|
2849 |
}
|
|
2850 |
}
|
|
2851 |
void checkStaticImports() {
|
|
2852 |
if (!allowStaticImport) {
|
|
2853 |
log.error(S.pos(), "static.import.not.supported.in.source", source.name);
|
|
2854 |
allowStaticImport = true;
|
|
2855 |
}
|
|
2856 |
}
|
|
2857 |
void checkAnnotations() {
|
|
2858 |
if (!allowAnnotations) {
|
|
2859 |
log.error(S.pos(), "annotations.not.supported.in.source", source.name);
|
|
2860 |
allowAnnotations = true;
|
|
2861 |
}
|
|
2862 |
}
|
|
2863 |
}
|