pmd/pmd-java/etc/grammar/Java.jjt
Andreas Dangel 36fb459bd9 [java] Correct grammar regarding default case label
Update ExhaustiveSwitch so that it compiles with java 20. "case default" is not allowed anymore.
2023-02-03 17:09:58 +01:00

2719 lines
82 KiB
Plaintext

/**
* Support "JEP 427: Pattern Matching for switch (Third Preview)" for Java 19 Preview
* Note: GuardedPattern is deprecated and only valid for 17-preview and 18-preview
* New AST node: ASTSwitchGuard (production "Guard") - used within switch case labels for refining a pattern
* Support "JEP 405: Record Patterns (Preview)" for Java 19 Preview
* New AST node: ASTRecordPattern and ASTComponentPatternList (production "RecordStructurePattern")
* Remove support for Java 17 preview language features
* Andreas Dangel 07/2022
*====================================================================
* Support "JEP 420: Pattern Matching for switch (Second Preview)" for Java 18 Preview
* There were no grammar changes between 18-preview and 17-preview
* Remove support for Java 16 preview language features
* Andreas Dangel 03/2022
*====================================================================
* Promote "JEP 409: Sealed Classes" as permanent language feature with Java 17.
* Support "JEP 406: Pattern Matching for switch (Preview)" for Java 17 Preview.
* Remove support for Java 15 preview language features
* Andreas Dangel 07/2021
*====================================================================
* Fix #3117 - infinite loop when parsing invalid code nested in lambdas
* Andreas Dangel 03/2021
*====================================================================
* Fix #3145 - parse exception with local records
* Clément Fournier 03/2021
*====================================================================
* Remove support for Java 14 preview language features
* JEP 397: Sealed Classes (Second Preview) for Java16 Preview
* JEP 395: Records for Java16
* JEP 394: Pattern Matching for instanceof for Java16
* Andreas Dangel 02/2021
*====================================================================
* Remove support for Java 13 preview language features.
* Promote text blocks as a permanent language features with Java 15.
* Support Pattern Matching for instanceof with Java 15 Preview.
* Support Records with Java 15 Preview.
* Support Local Records with Java 15 Preview.
* Support Sealed Classes with Java 15 Preview.
* Andreas Dangel 08/2020
*====================================================================
* Add support for record types introduced as a preview language
* feature with Java 14. See JEP 359.
* Andreas Dangel 02/2020
*====================================================================
* Add support for pattern matching for instance of introduced
* as a preview language feature with Java 14. See JEP 305.
* Clément Fournier 02/2020
*====================================================================
* Switch Expressions are now a standard feature of Java 14.
* Andreas Dangel 02/2020
*====================================================================
* Add support for the yield statement introduced as a preview language
* feature with Java 13. See JEP 354.
* Add support for text block literals introduces as a preview language
* feature with Java 13. See JEP 355.
* Andreas Dangel 08/2019
*====================================================================
* Fix #1848 Local classes should preserve their modifiers
* Clément Fournier 05/2019
*====================================================================
* Add support for Java 12 switch expressions and switch rules.
* Andreas Dangel, Clément Fournier 03/2019
*====================================================================
* Add support for Java 10 Local Variable Type Inference
* See #743. In Java 10 mode, "var" as local variable type is handled special.
* Andreas Dangel 04/2018
*====================================================================
* Fixes #888 [java] ParseException occurs with valid '<>' in Java 1.8 mode
* Juan Martin Sotuyo Dodero 01/2018
*====================================================================
* Fixes #793 [java] Parser error with private method in nested classes in interfaces
* Andreas Dangel 12/2017
*====================================================================
* Add support for Java 9 changes:
* Private interface methods are only allowed with java9.
* A single underscore "_" is an invalid identifier in java9.
* Diamond operator for anonymous classes is only allowed with java9.
* Add support for module-info.java.
* Allow more concise try-with-resources statements with java9.
* Andreas Dangel 09/2017
*====================================================================
* Add support for new Java 8 annotation locations.
* Bugs #414, #415, #417
* @Snap252 06/2017
*====================================================================
* Allow empty statements (";") between package, import
* and type declarations.
* Bug #378
* Andreas Dangel 05/2017
*====================================================================
* Allow method references to specify generics also for
* constructor references ("new").
* Bug #309
* Andreas Dangel 03/2017
*====================================================================
* Provide a better fix for CastExpression, getting rid of most hacks.
* Bug #257
*
* Juan Martin Sotuyo Dodero 02/2017
*====================================================================
* Allow local classes to carry more than one annotation.
* Bug #208
*
* Juan Martin Sotuyo Dodero 01/2017
*====================================================================
* Change lookahead for AnnotationMethodDeclaration in AnnotationTypeMemberDeclaration.
* Bug #206
*
* Juan Martin Sotuyo Dodero 01/2017
*====================================================================
* Allow method references to specify generics.
* Bug #207
*
* Juan Martin Sotuyo Dodero 01/2017
*====================================================================
* Simplify VariableDeclaratorId, forbidding illegal sequences such as
* this[] and MyClass.this[]
*
* Juan Martin Sotuyo Dodero 10/2016
*====================================================================
* Improve lambda detection in PrimaryPrefix to improve parsing performance.
*
* Juan Martin Sotuyo Dodero 10/2016
*====================================================================
* Fix for regression introduced in previous changeset.
* The syntactic lookahead was not properly handled by javacc,
* so it was converted to a semantic one
* Bug #1530
*
* Juan Martin Sotuyo Dodero 10/2016
*====================================================================
* Fix for an expression within an additive expression that was
* wrongly taken as a cast expression.
* Bug #1484
*
* Andreas Dangel 05/2016
*====================================================================
* Fix for Lambda expression with one variable
* Bug #1470
*
* Andreas Dangel 04/2016
*====================================================================
* Added support for explicit receiver parameters.
* Bug #1455
*
* Andreas Dangel 01/2016
*====================================================================
* Added capability for Tracking Tokens.
*
* Amit Kumar Prasad 10/2015
*====================================================================
* Fix for Cast Expression not detected properly in Return statements
* Bug #1429
*
* Andreas Dangel 10/2015
*====================================================================
* Fix for Lambda expressions without variables.
*
* Andreas Dangel 11/2014
*====================================================================
* Fix for Lambda expressions with two or three variables.
*
* Andreas Dangel 07/2014
*====================================================================
* Added support for Java 8 language constructs.
*
* Andreas Dangel 01/2014
* ===================================================================
* Fix ForStatement to allow Annotations within the initializer.
*
* Andreas Dangel 01/2013
* ===================================================================
* Fix wrong consumption of modifiers (e.g. "final") in a for-each loop.
* Check for wrong java usage when catching multiple exceptions.
*
* Andreas Dangel 12/2012
* ===================================================================
* Enhance grammar to use LocalVariableDeclaration in a for-each loop.
* This enhances the symbol table to recognize variables declared in such
* a for-each loop.
*
* Andreas Dangel 10/2012
* ===================================================================
* Fix parser problem #3530124 with generics
*
* Modified the grammar, so that the different usages of generics work.
* Adjusted the rules, that use "super", as super is no longer a PrimarySuffix.
* It's now either a ExplicitConstructorInvocation or a PrimaryPrefix.
* See also test case ParserCornersTest/testParsersCases
*
* Andreas Dangel 05/2012
* ===================================================================
* Added support for Java 7 language constructs
*
* Dinesh Bolkensteyn (SonarSource), 10/2011
* ===================================================================
* Changed the CastLookahead production to use 3 lookaheads for primitive types as suggested by Andreas Dangel
*
* Brian Remedios 07/2011
* ===================================================================
* Added in support for assert as a name using lookaheads
*
* Tom Copeland, 09/03
* ===================================================================
* Copied over the changes made by Andrea Gini and Marco Savard to
* support JDK 1.4 language constructs, i.e., asserts.
* See the java1_4c.jj distributed in the javacc2.1/examples/JavaGrammers directory.
* Made numerous other modifications to support PMD.
*
* Tom Copeland, 6/02
* ===================================================================
* This file is a modified version of one originally found in the
* VTransformer Examples directory of JavaCC1_1. It has been
* modified to accept Java source code for Java 1.2. Basically,
* this means a new key word was added, 'strictfp', and that keyword
* added to the appropriate productions and LOOKAHEADs (where other,
* similar keywords are listed as possible choices). This involved
* changing 11 lines.
*
* Some other minor changes were made, which can be found by doing
* a search on 'DW, 7/99'.
*
* The goal of this effort was for the grammar to be able to parse
* any legal Java 1.2 source code. It does not reject all illegal
* cases, but neither did the original. Plus, when it comes to
* the new 'strictfp' keyword, the Java Compiler from Sun (JDK1.2.1)
* also does not reject all illegal cases, as defined by the
* "Updates" document found at
* http://java.sun.com/docs/books/jls/strictfp-changes.pdf
* (see the testcases.txt file for details).
*
* David Williams, 7/99
* ===================================================================
*
*
* Copyright (C) 1996, 1997 Sun Microsystems Inc.
*
* Use of this file and the system it is part of is constrained by the
* file COPYRIGHT in the root directory of this system. You may, however,
* make any modifications you wish to this file.
*
* Java files generated by running JavaCC on this file (or modified versions
* of this file) may be used in exactly the same manner as Java files
* generated from any grammar developed by you.
*
* Author: Sriram Sankar
* Date: 3/5/97
*
* This file contains a Java grammar and actions that implement a front-end.
*/
options {
JAVA_UNICODE_ESCAPE = true;
CACHE_TOKENS = true;
STATIC = false;
USER_CHAR_STREAM = true;
JDK_VERSION = "1.5";
MULTI = true;
VISITOR = true;
NODE_USES_PARSER = true;
TRACK_TOKENS = true;
NODE_PACKAGE="net.sourceforge.pmd.lang.java.ast";
// disable the calculation of expected tokens when a parse error occurs
// depending on the possible allowed next tokens, this
// could be expensive (see https://github.com/pmd/pmd/issues/3117)
//ERROR_REPORTING = false;
//DEBUG_PARSER = true;
//DEBUG_LOOKAHEAD = true;
//DEBUG_TOKEN_MANAGER = true;
}
PARSER_BEGIN(JavaParser)
package net.sourceforge.pmd.lang.java.ast;
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import net.sourceforge.pmd.lang.ast.CharStream;
import net.sourceforge.pmd.lang.ast.Node;
import net.sourceforge.pmd.lang.ast.TokenMgrError;
public class JavaParser {
private int jdkVersion = 0;
private boolean preview = false;
public void setJdkVersion(int jdkVersion) {
this.jdkVersion = jdkVersion;
}
public void setPreview(boolean preview) {
this.preview = preview;
}
private void throwParseException(String message) {
int line = -1;
int col = -1;
if (jj_lastpos != null) {
line = jj_lastpos.beginLine;
col = jj_lastpos.beginColumn;
}
throw new ParseException("Line " + line + ", Column " + col + ": " + message);
}
private void checkForBadAssertUsage(String in, String usage) {
if (jdkVersion > 3 && in.equals("assert")) {
throwParseException("Can't use 'assert' as " + usage + " when running in JDK 1.4 mode!");
}
}
private void checkForBadStaticImportUsage() {
if (jdkVersion < 5) {
throwParseException("Can't use static imports when running in JDK 1.4 mode!");
}
}
private void checkForBadAnnotationUsage() {
if (jdkVersion < 5) {
throwParseException("Can't use annotations when running in JDK 1.4 mode!");
}
}
private void checkForBadGenericsUsage() {
if (jdkVersion < 5) {
throwParseException("Can't use generics unless running in JDK 1.5 mode!");
}
}
private void checkForBadVariableArgumentsUsage() {
if (jdkVersion < 5) {
throwParseException("Can't use variable arguments (varargs) when running in JDK 1.4 mode!");
}
}
private void checkForBadJDK15ForLoopSyntaxArgumentsUsage() {
if (jdkVersion < 5) {
throwParseException("Can't use JDK 1.5 for loop syntax when running in JDK 1.4 mode!");
}
}
private void checkForBadEnumUsage(String in, String usage) {
if (jdkVersion >= 5 && in.equals("enum")) {
throwParseException("Can't use 'enum' as " + usage + " when running in JDK 1.5 mode!");
}
}
private void checkForBadHexFloatingPointLiteral() {
if (jdkVersion < 5) {
throwParseException("Can't use hexadecimal floating point literals in pre-JDK 1.5 target");
}
}
private void checkForBadNumericalLiteralslUsage(Token token) {
if (jdkVersion < 7) {
if (token.image.contains("_")) {
throwParseException("Can't use underscores in numerical literals when running in JDK inferior to 1.7 mode!");
}
if (token.image.startsWith("0b") || token.image.startsWith("0B")) {
throwParseException("Can't use binary numerical literals when running in JDK inferior to 1.7 mode!");
}
}
}
private void checkForBadDiamondUsage() {
if (jdkVersion < 7) {
throwParseException("Cannot use the diamond generic notation when running in JDK inferior to 1.7 mode!");
}
}
private void checkForBadTryWithResourcesUsage() {
if (jdkVersion < 7) {
throwParseException("Cannot use the try-with-resources notation when running in JDK inferior to 1.7 mode!");
}
}
private void checkForBadMultipleExceptionsCatching() {
if (jdkVersion < 7) {
throwParseException("Cannot catch multiple exceptions when running in JDK inferior to 1.7 mode!");
}
}
private void checkForBadLambdaUsage() {
if (jdkVersion < 8) {
throwParseException("Cannot use lambda expressions when running in JDK inferior to 1.8 mode!");
}
}
private void checkForBadMethodReferenceUsage() {
if (jdkVersion < 8) {
throwParseException("Cannot use method references when running in JDK inferior to 1.8 mode!");
}
}
private void checkForBadDefaultImplementationUsage() {
if (jdkVersion < 8) {
throwParseException("Cannot use default implementations in interfaces when running in JDK inferior to 1.8 mode!");
}
}
private void checkForBadIntersectionTypesInCasts() {
if (jdkVersion < 8) {
throwParseException("Cannot use intersection types in casts when running in JDK inferior to 1.8 mode!");
}
}
private void checkForBadTypeAnnotations() {
if (jdkVersion < 8) {
throwParseException("Cannot use type annotations when running in JDK inferior to 1.8 mode!");
}
}
private void checkforBadExplicitReceiverParameter() {
if (jdkVersion < 8) {
throwParseException("Cannot use explicit receiver parameters when running in JDK inferior to 1.8 mode!");
}
}
private void checkForBadAnonymousDiamondUsage() {
if (jdkVersion < 9) {
ASTAllocationExpression node = (ASTAllocationExpression)jjtree.peekNode();
ASTTypeArguments types = node.getFirstChildOfType(ASTClassOrInterfaceType.class).getFirstChildOfType(ASTTypeArguments.class);
if (node.isAnonymousClass() && types != null && types.isDiamond()) {
throwParseException("Cannot use '<>' with anonymous inner classes when running in JDK inferior to 9 mode!");
}
}
}
/**
* Keeps track whether we are dealing with an interface or not. Needed since the tree is
* is not fully constructed yet, when we check for private interface methods.
* The flag is updated, if entering ClassOrInterfaceDeclaration and reset when leaving.
* The flag is also reset, if entering a anonymous inner class or enums.
*/
private boolean inInterface = false;
private void checkForBadPrivateInterfaceMethod(ASTMethodDeclaration node) {
if (jdkVersion < 9 && inInterface && node.isPrivate()) {
throwParseException("Cannot use private interface methods when running in JDK inferior to 9 mode!");
}
}
private void checkForBadIdentifier(String image) {
if (jdkVersion >= 9 && "_".equals(image)) {
throwParseException("With JDK 9, '_' is a keyword, and may not be used as an identifier!");
}
}
private void checkForBadModuleUsage() {
if (jdkVersion < 9) {
throwParseException("Cannot use module declaration when running in JDK inferior to 9 mode!");
}
}
private void checkForBadConciseTryWithResourcesUsage() {
if (jdkVersion < 9) {
throwParseException("Cannot use concise try-with-resources when running in JDK inferior to 9 mode!");
}
}
private void checkForBadTypeIdentifierUsage(String image) {
if (jdkVersion >= 10 && "var".equals(image)) {
throwParseException("With JDK 10, 'var' is a contextual keyword and cannot be used for type declarations!");
}
if (jdkVersion >= 14 && "yield".equals(image)) {
throwParseException("With JDK 14, 'yield' is a contextual keyword and cannot be used for type declarations!");
}
if (jdkVersion >= 16 && "record".equals(image)) {
throwParseException("With JDK >= 16, 'record' is a contextual keyword and cannot be used for type declarations!");
}
if (jdkVersion >= 17 && "sealed".equals(image)) {
throwParseException("With JDK >= 17, 'sealed' is a contextual keyword and cannot be used for type declarations!");
}
if (jdkVersion >= 17 && "permits".equals(image)) {
throwParseException("With JDK >= 17, 'permits' is a contextual keyword and cannot be used for type declarations!");
}
}
private void checkForMultipleCaseLabels() {
if (jdkVersion < 14) {
throwParseException("Multiple case labels in switch statements are only supported with Java >= 14");
}
}
/**
* Keeps track during tree construction, whether we are currently building a switch label.
* A switch label must not contain a LambdaExpression.
* Unfortunately, we have added LambdaExpression as part of PrimaryPrefix, which is wrong.
* To keep compatibility, this flag is used, whether a LambdaExpression should be parsed
* in PrimaryPrefix.
* See also comment at #Expression().
*/
private boolean inSwitchLabel = false;
private void checkForSwitchRules() {
if (jdkVersion < 14) {
throwParseException("Switch rules in switch statements are only supported with Java >= 14");
}
}
private void checkForSwitchExpression() {
if (jdkVersion < 14) {
throwParseException("Switch expressions are only supported with Java >= 14");
}
}
private void checkForYieldStatement() {
if (jdkVersion < 14) {
throwParseException("Yield statements are only supported with Java >= 14");
}
}
private void checkForTextBlockLiteral() {
if (!(jdkVersion >= 15)) {
throwParseException("Text block literals are only supported with Java >= 15");
}
}
private void checkForNewStringSpaceEscape(String s) {
if (jdkVersion < 15 && s.contains("\\s") && !s.contains("\\\\s")) {
throwParseException("The escape sequence \"\\s\" is only supported with Java >= 15");
}
}
private void checkforBadInstanceOfPattern() {
if (jdkVersion < 16) {
throwParseException("Pattern Matching for instanceof is only supported with JDK >= 16");
}
}
private boolean isRecordTypeSupported() {
return jdkVersion >= 16;
}
private void checkForRecordType() {
if (!isRecordTypeSupported()) {
throwParseException("Records are only supported with JDK >= 16");
}
}
private void checkForLocalInterfaceOrEnumType() {
if (!isRecordTypeSupported()) {
throwParseException("Local interfaces and enums are only supported with JDK >= 16");
}
}
private boolean isSealedClassSupported() {
return jdkVersion >= 17;
}
private void checkForSealedClassUsage() {
if (!isSealedClassSupported()) {
throwParseException("Sealed Classes are only supported with JDK >= 17.");
}
}
private boolean isJEP406Supported() {
return (jdkVersion == 19 || jdkVersion == 20) && preview;
}
private void checkForPatternMatchingInSwitch() {
if (!isJEP406Supported()) {
throwParseException("Pattern Matching in Switch is only supported with JDK 19 Preview or JDK 20 Preview.");
}
}
private void checkForNullCaseLabel() {
if (!isJEP406Supported()) {
throwParseException("Null case labels in switch are only supported with JDK 19 Preview or JDK 20 Preview.");
}
}
private void checkForDefaultCaseLabel() {
if (!((jdkVersion == 19) && preview)) {
throwParseException("Default case labels in switch are only supported with JDK 19 Preview.");
}
}
private void checkForNullWithDefaultCaseLabel() {
if (!isJEP406Supported()) {
throwParseException("Null case labels with default in switch are only supported with JDK 19 Preview or JDK 20 Preview.");
}
}
private void checkForParenthesizedPattern() {
if (!((jdkVersion == 19 || jdkVersion == 20) && preview)) {
throwParseException("Parenthesized patterns are only supported with JDK 19 Preview or JDK 20 Preview.");
}
}
private void checkForGuard() {
if (!((jdkVersion == 19 || jdkVersion == 20) && preview)) {
throwParseException("Guards are only supported with JDK 19 Preview or JDK 20 Preview.");
}
}
private void checkForRecordPatterns() {
if (!((jdkVersion == 19 || jdkVersion == 20) && preview)) {
throwParseException("Record Patterns are only supported with JDK 19 Preview or JDK 20 Preview.");
}
}
// This is a semantic LOOKAHEAD to determine if we're dealing with an assert
// Note that this can't be replaced with a syntactic lookahead
// since "assert" isn't a string literal token
private boolean isNextTokenAnAssert() {
if (jdkVersion <= 3) {
return false;
}
return getToken(1).image.equals("assert");
}
private boolean isPrecededByComment(Token tok) {
boolean res = false;
while (!res && tok.specialToken != null) {
tok = tok.specialToken;
res = tok.kind == SINGLE_LINE_COMMENT ||
tok.kind == FORMAL_COMMENT ||
tok.kind == MULTI_LINE_COMMENT;
}
return res;
}
/**
* Semantic lookahead to check if the next identifier is a
* specific restricted keyword.
*
* <p>Restricted keywords are:
* var, yield, record, sealed, permits, "non" + "-" + "sealed"
*
* <p>enum and assert is used like restricted keywords, as they were not keywords
* in the early java versions.
*/
private boolean isKeyword(String image) {
return isKeyword(1, image);
}
private boolean isKeyword(int index, String image) {
Token token = getToken(index);
return token.kind == IDENTIFIER && token.image.equals(image);
}
private boolean isToken(int index, int kind) {
return getToken(index).kind == kind;
}
/**
* Semantic lookahead which matches "non-sealed".
*
* <p>"non-sealed" cannot be a token, for several reasons:
* It is only a keyword with java15 preview+, it consists actually
* of several separate tokens, which are valid on their own.
*/
private boolean isNonSealedModifier() {
if (isKeyword(1, "non") && isToken(2, MINUS) && isKeyword(3, "sealed")) {
Token nonToken = getToken(1);
Token minusToken = getToken(2);
Token sealedToken = getToken(3);
return nonToken.endColumn + 1 == minusToken.beginColumn
&& minusToken.endColumn + 1 == sealedToken.beginColumn;
}
return false;
}
private boolean classModifierForLocalTypesLookahead() {
Token next = getToken(1);
return next.kind == AT
|| next.kind == PUBLIC
|| next.kind == PROTECTED
|| next.kind == PRIVATE
|| next.kind == ABSTRACT
|| next.kind == STATIC
|| next.kind == FINAL
|| next.kind == STRICTFP;
}
private boolean localTypeDeclLookahead() {
Token next = getToken(1);
return next.kind == CLASS
|| isRecordTypeSupported() && next.kind == INTERFACE
|| isRecordTypeSupported() && next.kind == IDENTIFIER && next.image.equals("enum")
|| isRecordTypeSupported() && next.kind == IDENTIFIER && next.image.equals("record") && isToken(2, IDENTIFIER);
}
/**
* True if we're in a switch block, one precondition for parsing a yield
* statement.
*/
private boolean inSwitchExprBlock = false;
private boolean isYieldStart() {
return inSwitchExprBlock && jdkVersion >= 14
&& isKeyword("yield")
&& mayStartExprAfterYield(2);
}
private boolean mayStartExprAfterYield(final int offset) {
// based off of https://hg.openjdk.java.net/jdk/jdk/file/bc3da0226ffa/src/jdk.compiler/share/classes/com/sun/tools/javac/parser/JavacParser.java#l2580
// please don't sue me
Token token = getToken(offset);
if (token == null) return false; // eof
switch (token.kind) {
case PLUS: case MINUS: case STRING_LITERAL: case CHARACTER_LITERAL:
case INTEGER_LITERAL: case FLOATING_POINT_LITERAL: case HEX_FLOATING_POINT_LITERAL:
case NULL: case IDENTIFIER: case TRUE: case FALSE:
case NEW: case SWITCH: case THIS: case SUPER:
return true;
case INCR: case DECR:
return getToken(offset + 1).kind != SEMICOLON; // eg yield++;
case LPAREN:
int lookahead = offset + 1;
int balance = 1;
Token t;
while ((t = getToken(lookahead)) != null && balance > 0) {
switch (t.kind) {
case LPAREN: balance++; break;
case RPAREN: balance--; break;
case COMMA: if (balance == 1) return false; // a method call, eg yield(1, 2);
}
lookahead++;
}
// lambda: yield () -> {};
// method call: yield ();
return t != null
&& (lookahead != offset + 2 // ie ()
|| t.kind == LAMBDA);
default:
return false;
}
}
private boolean shouldStartStatementInSwitch() {
switch (getToken(1).kind) {
case _DEFAULT:
case CASE:
case RBRACE:
return false;
default:
return true;
}
}
public Map<Integer, String> getSuppressMap() {
return token_source.getSuppressMap();
}
public void setSuppressMarker(String marker) {
token_source.setSuppressMarker(marker);
}
/**
* Keeps track during tree construction, whether we are currently building an
* explicit constructor invocation. Then the PrimaryExpression that may prefix
* a qualified super constructor call may not consume "super" tokens.
*/
private boolean inExplicitConstructorInvoc = false;
}
PARSER_END(JavaParser)
TOKEN_MGR_DECLS :
{
protected List<Comment> comments = new ArrayList<Comment>();
}
/* WHITE SPACE */
SPECIAL_TOKEN :
{
< HORIZONTAL_WHITESPACE: [" ", "\t", "\f"] >
| < LINE_TERMINATOR: "\n" | "\r" | "\r\n" >
}
SPECIAL_TOKEN :
{
< SINGLE_LINE_COMMENT: "//"(~["\n","\r"])* ("\n"|"\r"|"\r\n")? >
{
int startOfNOPMD = matchedToken.image.indexOf(suppressMarker);
if (startOfNOPMD != -1) {
suppressMap.put(matchedToken.beginLine, matchedToken.image.substring(startOfNOPMD + suppressMarker.length()));
}
comments.add(new SingleLineComment(matchedToken));
}
}
/* COMMENTS */
MORE :
{
<"/**" ~["/"]> { input_stream.backup(1); } : IN_FORMAL_COMMENT
|
"/*" : IN_MULTI_LINE_COMMENT
}
<IN_FORMAL_COMMENT>
SPECIAL_TOKEN :
{
<FORMAL_COMMENT: "*/" > { comments.add(new FormalComment(matchedToken)); } : DEFAULT
}
<IN_MULTI_LINE_COMMENT>
SPECIAL_TOKEN :
{
<MULTI_LINE_COMMENT: "*/" > { comments.add(new MultiLineComment(matchedToken)); } : DEFAULT
}
<IN_FORMAL_COMMENT,IN_MULTI_LINE_COMMENT>
MORE :
{
< ~[] >
}
/* RESERVED WORDS AND LITERALS */
TOKEN :
{
< ABSTRACT: "abstract" >
| < BOOLEAN: "boolean" >
| < BREAK: "break" >
| < BYTE: "byte" >
| < CASE: "case" >
| < CATCH: "catch" >
| < CHAR: "char" >
| < CLASS: "class" >
| < CONST: "const" >
| < CONTINUE: "continue" >
| < _DEFAULT: "default" >
| < DO: "do" >
| < DOUBLE: "double" >
| < ELSE: "else" >
| < EXTENDS: "extends" >
| < FALSE: "false" >
| < FINAL: "final" >
| < FINALLY: "finally" >
| < FLOAT: "float" >
| < FOR: "for" >
| < GOTO: "goto" >
| < IF: "if" >
| < IMPLEMENTS: "implements" >
| < IMPORT: "import" >
| < INSTANCEOF: "instanceof" >
| < INT: "int" >
| < INTERFACE: "interface" >
| < LONG: "long" >
| < NATIVE: "native" >
| < NEW: "new" >
| < NULL: "null" >
| < PACKAGE: "package">
| < PRIVATE: "private" >
| < PROTECTED: "protected" >
| < PUBLIC: "public" >
| < RETURN: "return" >
| < SHORT: "short" >
| < STATIC: "static" >
| < SUPER: "super" >
| < SWITCH: "switch" >
| < SYNCHRONIZED: "synchronized" >
| < THIS: "this" >
| < THROW: "throw" >
| < THROWS: "throws" >
| < TRANSIENT: "transient" >
| < TRUE: "true" >
| < TRY: "try" >
| < VOID: "void" >
| < VOLATILE: "volatile" >
| < WHILE: "while" >
| < STRICTFP: "strictfp" >
}
/* Restricted Keywords */
// Note: These are commented out, since these keywords
// can still be used as identifiers.
// see isKeyword() semantic lookup
/*
TOKEN :
{
< OPEN: "open" >
| < MODULE: "module" >
| < REQUIRES: "requires" >
| < TRANSITIVE: "transitive" >
| < EXPORTS: "exports" >
| < OPENS: "opens" >
| < TO: "to" >
| < USES: "uses" >
| < PROVIDES: "provides" >
| < WITH: "with" >
}
*/
/* LITERALS */
TOKEN :
{
< INTEGER_LITERAL:
<DECIMAL_LITERAL> (["l","L"])?
| <HEX_LITERAL> (["l","L"])?
| <BINARY_LITERAL> (["l","L"])?
| <OCTAL_LITERAL> (["l","L"])?
>
|
< #DECIMAL_LITERAL: (["0"-"9"]((["0"-"9","_"])*["0"-"9"])?) >
|
< #HEX_LITERAL: "0" ["x","X"] (["0"-"9","a"-"f","A"-"F"]((["0"-"9","a"-"f","A"-"F","_"])*["0"-"9","a"-"f","A"-"F"])?) >
|
< #BINARY_LITERAL: "0" ["b","B"] (["0","1"]((["0","1","_"])*["0","1"])?) >
|
< #OCTAL_LITERAL: "0" (["0"-"7"]((["0"-"7","_"])*["0"-"7"])?) >
|
< FLOATING_POINT_LITERAL:
(["0"-"9"]((["0"-"9","_"])*["0"-"9"])?) "." (["0"-"9"]((["0"-"9","_"])*["0"-"9"])?)? (<EXPONENT>)? (["f","F","d","D"])?
| "." (["0"-"9"]((["0"-"9","_"])*["0"-"9"])?) (<EXPONENT>)? (["f","F","d","D"])?
| (["0"-"9"]((["0"-"9","_"])*["0"-"9"])?) <EXPONENT> (["f","F","d","D"])?
| (["0"-"9"]((["0"-"9","_"])*["0"-"9"])?) (<EXPONENT>)? ["f","F","d","D"]
>
|
< HEX_FLOATING_POINT_LITERAL:
(<HEX_LITERAL> (".")? | "0" ["x","X"] (["0"-"9","a"-"f","A"-"F"]((["0"-"9","a"-"f","A"-"F","_"])*["0"-"9","a"-"f","A"-"F"])?)? "." (["0"-"9","a"-"f","A"-"F"]((["0"-"9","a"-"f","A"-"F","_"])*["0"-"9","a"-"f","A"-"F"])?)) ["p","P"] (["+","-"])? (["0"-"9"]((["0"-"9","_"])*["0"-"9"])?) (["f","F","d","D"])?
>
|
< #EXPONENT: ["e","E"] (["+","-"])? (["0"-"9"]((["0"-"9","_"])*["0"-"9"])?) >
|
< CHARACTER_LITERAL:
"'"
( (~["'","\\","\n","\r"])
| ("\\"
( ["n","t","b","r","f","\\","'","\""]
| ["0"-"7"] ( ["0"-"7"] )?
| ["0"-"3"] ["0"-"7"] ["0"-"7"]
)
)
)
"'"
>
| < #STRING_ESCAPE:
"\\"
( ["n","t","b","r","f", "s", "\\","'","\""]
// octal escapes
| ["0"-"7"] ( ["0"-"7"] )?
| ["0"-"3"] ["0"-"7"] ["0"-"7"]
)
>
|
< STRING_LITERAL:
"\""
( (~["\"","\\","\n","\r"])
| <STRING_ESCAPE>
)*
"\""
>
}
/* TEXT BLOCKS */
MORE :
{
< "\"\"\"" (<HORIZONTAL_WHITESPACE>)* <LINE_TERMINATOR> > : IN_TEXT_BLOCK_LITERAL
}
<IN_TEXT_BLOCK_LITERAL>
TOKEN :
{
<TEXT_BLOCK_LITERAL: "\"\"\"" > : DEFAULT
}
<IN_TEXT_BLOCK_LITERAL>
MORE :
{
< ~["\\"] | <STRING_ESCAPE> | ("\\")? <LINE_TERMINATOR> >
}
/* IDENTIFIERS */
TOKEN :
{
< IDENTIFIER : <LETTER> ( <PART_LETTER> )* >
// all chars for which Character.isJavaIdentifierStart is true
| < #LETTER : ["$","A"-"Z","_","a"-"z","\u00a2"-"\u00a5","\u00aa","\u00b5","\u00ba",
"\u00c0"-"\u00d6","\u00d8"-"\u00f6","\u00f8"-"\u021f","\u0222"-"\u0233","\u0250"-"\u02ad",
"\u02b0"-"\u02b8","\u02bb"-"\u02c1","\u02d0"-"\u02d1","\u02e0"-"\u02e4","\u02ee","\u037a",
"\u0386","\u0388"-"\u038a","\u038c","\u038e"-"\u03a1","\u03a3"-"\u03ce","\u03d0"-"\u03d7",
"\u03da"-"\u03f3","\u0400"-"\u0481","\u048c"-"\u04c4","\u04c7"-"\u04c8","\u04cb"-"\u04cc",
"\u04d0"-"\u04f5","\u04f8"-"\u04f9","\u0531"-"\u0556","\u0559","\u0561"-"\u0587",
"\u05d0"-"\u05ea","\u05f0"-"\u05f2","\u0621"-"\u063a","\u0640"-"\u064a","\u0671"-"\u06d3",
"\u06d5","\u06e5"-"\u06e6","\u06fa"-"\u06fc","\u0710","\u0712"-"\u072c","\u0780"-"\u07a5",
"\u0905"-"\u0939","\u093d","\u0950","\u0958"-"\u0961","\u0985"-"\u098c","\u098f"-"\u0990",
"\u0993"-"\u09a8","\u09aa"-"\u09b0","\u09b2","\u09b6"-"\u09b9","\u09dc"-"\u09dd",
"\u09df"-"\u09e1","\u09f0"-"\u09f3","\u0a05"-"\u0a0a","\u0a0f"-"\u0a10","\u0a13"-"\u0a28",
"\u0a2a"-"\u0a30","\u0a32"-"\u0a33","\u0a35"-"\u0a36","\u0a38"-"\u0a39","\u0a59"-"\u0a5c",
"\u0a5e","\u0a72"-"\u0a74","\u0a85"-"\u0a8b","\u0a8d","\u0a8f"-"\u0a91","\u0a93"-"\u0aa8",
"\u0aaa"-"\u0ab0","\u0ab2"-"\u0ab3","\u0ab5"-"\u0ab9","\u0abd","\u0ad0","\u0ae0",
"\u0b05"-"\u0b0c","\u0b0f"-"\u0b10","\u0b13"-"\u0b28","\u0b2a"-"\u0b30","\u0b32"-"\u0b33",
"\u0b36"-"\u0b39","\u0b3d","\u0b5c"-"\u0b5d","\u0b5f"-"\u0b61","\u0b85"-"\u0b8a",
"\u0b8e"-"\u0b90","\u0b92"-"\u0b95","\u0b99"-"\u0b9a","\u0b9c","\u0b9e"-"\u0b9f",
"\u0ba3"-"\u0ba4","\u0ba8"-"\u0baa","\u0bae"-"\u0bb5","\u0bb7"-"\u0bb9","\u0c05"-"\u0c0c",
"\u0c0e"-"\u0c10","\u0c12"-"\u0c28","\u0c2a"-"\u0c33","\u0c35"-"\u0c39","\u0c60"-"\u0c61",
"\u0c85"-"\u0c8c","\u0c8e"-"\u0c90","\u0c92"-"\u0ca8","\u0caa"-"\u0cb3","\u0cb5"-"\u0cb9",
"\u0cde","\u0ce0"-"\u0ce1","\u0d05"-"\u0d0c","\u0d0e"-"\u0d10","\u0d12"-"\u0d28",
"\u0d2a"-"\u0d39","\u0d60"-"\u0d61","\u0d85"-"\u0d96","\u0d9a"-"\u0db1","\u0db3"-"\u0dbb",
"\u0dbd","\u0dc0"-"\u0dc6","\u0e01"-"\u0e30","\u0e32"-"\u0e33","\u0e3f"-"\u0e46",
"\u0e81"-"\u0e82","\u0e84","\u0e87"-"\u0e88","\u0e8a","\u0e8d","\u0e94"-"\u0e97",
"\u0e99"-"\u0e9f","\u0ea1"-"\u0ea3","\u0ea5","\u0ea7","\u0eaa"-"\u0eab","\u0ead"-"\u0eb0",
"\u0eb2"-"\u0eb3","\u0ebd","\u0ec0"-"\u0ec4","\u0ec6","\u0edc"-"\u0edd","\u0f00",
"\u0f40"-"\u0f47","\u0f49"-"\u0f6a","\u0f88"-"\u0f8b","\u1000"-"\u1021","\u1023"-"\u1027",
"\u1029"-"\u102a","\u1050"-"\u1055","\u10a0"-"\u10c5","\u10d0"-"\u10f6","\u1100"-"\u1159",
"\u115f"-"\u11a2","\u11a8"-"\u11f9","\u1200"-"\u1206","\u1208"-"\u1246","\u1248",
"\u124a"-"\u124d","\u1250"-"\u1256","\u1258","\u125a"-"\u125d","\u1260"-"\u1286","\u1288",
"\u128a"-"\u128d","\u1290"-"\u12ae","\u12b0","\u12b2"-"\u12b5","\u12b8"-"\u12be","\u12c0",
"\u12c2"-"\u12c5","\u12c8"-"\u12ce","\u12d0"-"\u12d6","\u12d8"-"\u12ee","\u12f0"-"\u130e",
"\u1310","\u1312"-"\u1315","\u1318"-"\u131e","\u1320"-"\u1346","\u1348"-"\u135a",
"\u13a0"-"\u13f4","\u1401"-"\u166c","\u166f"-"\u1676","\u1681"-"\u169a","\u16a0"-"\u16ea",
"\u1780"-"\u17b3","\u17db","\u1820"-"\u1877","\u1880"-"\u18a8","\u1e00"-"\u1e9b",
"\u1ea0"-"\u1ef9","\u1d00"-"\u1eef","\u1f00"-"\u1f15","\u1f18"-"\u1f1d","\u1f20"-"\u1f45","\u1f48"-"\u1f4d",
"\u1f50"-"\u1f57","\u1f59","\u1f5b","\u1f5d","\u1f5f"-"\u1f7d","\u1f80"-"\u1fb4",
"\u1fb6"-"\u1fbc","\u1fbe","\u1fc2"-"\u1fc4","\u1fc6"-"\u1fcc","\u1fd0"-"\u1fd3",
"\u1fd6"-"\u1fdb","\u1fe0"-"\u1fec","\u1ff2"-"\u1ff4","\u1ff6"-"\u1ffc","\u203f"-"\u2040",
"\u207f","\u20a0"-"\u20af","\u2102","\u2107","\u210a"-"\u2113","\u2115","\u2119"-"\u211d",
"\u2124","\u2126","\u2128","\u212a"-"\u212d","\u212f"-"\u2131","\u2133"-"\u2139",
"\u2160"-"\u2183","\u3005"-"\u3007","\u3021"-"\u3029","\u3031"-"\u3035","\u3038"-"\u303a",
"\u3041"-"\u3094","\u309d"-"\u309e","\u30a1"-"\u30fe","\u3105"-"\u312c","\u3131"-"\u318e",
"\u31a0"-"\u31b7","\u3400"-"\u4db5","\u4e00"-"\u9fa5","\ua000"-"\ua48c","\ua490"-"\uabff","\uac00"-"\ud7a3",
"\uf900"-"\ufa2d","\ufb00"-"\ufb06","\ufb13"-"\ufb17","\ufb1d","\ufb1f"-"\ufb28",
"\ufb2a"-"\ufb36","\ufb38"-"\ufb3c","\ufb3e","\ufb40"-"\ufb41","\ufb43"-"\ufb44",
"\ufb46"-"\ufbb1","\ufbd3"-"\ufd3d","\ufd50"-"\ufd8f","\ufd92"-"\ufdc7","\ufdf0"-"\ufdfb",
"\ufe33"-"\ufe34","\ufe4d"-"\ufe4f","\ufe69","\ufe70"-"\ufe72","\ufe74","\ufe76"-"\ufefc",
"\uff04","\uff21"-"\uff3a","\uff3f","\uff41"-"\uff5a","\uff65"-"\uffbe","\uffc2"-"\uffc7",
"\uffca"-"\uffcf","\uffd2"-"\uffd7","\uffda"-"\uffdc","\uffe0"-"\uffe1","\uffe5"-"\uffe6"]>
// all chars for which Character.isJavaIdentifierPart is true
| < #PART_LETTER: ["\u0000"-"\b","\u000e"-"\u001b","$","0"-"9","A"-"Z","_","a"-"z",
"\u007f"-"\u009f","\u00a2"-"\u00a5","\u00aa","\u00b5","\u00ba","\u00c0"-"\u00d6",
"\u00d8"-"\u00f6","\u00f8"-"\u021f","\u0222"-"\u0233","\u0250"-"\u02ad","\u02b0"-"\u02b8",
"\u02bb"-"\u02c1","\u02d0"-"\u02d1","\u02e0"-"\u02e4","\u02ee","\u0300"-"\u034e",
"\u0360"-"\u0362","\u037a","\u0386","\u0388"-"\u038a","\u038c","\u038e"-"\u03a1",
"\u03a3"-"\u03ce","\u03d0"-"\u03d7","\u03da"-"\u03f3","\u0400"-"\u0481","\u0483"-"\u0486",
"\u048c"-"\u04c4","\u04c7"-"\u04c8","\u04cb"-"\u04cc","\u04d0"-"\u04f5","\u04f8"-"\u04f9",
"\u0531"-"\u0556","\u0559","\u0561"-"\u0587","\u0591"-"\u05a1","\u05a3"-"\u05b9",
"\u05bb"-"\u05bd","\u05bf","\u05c1"-"\u05c2","\u05c4","\u05d0"-"\u05ea","\u05f0"-"\u05f2",
"\u0621"-"\u063a","\u0640"-"\u0655","\u0660"-"\u0669","\u0670"-"\u06d3","\u06d5"-"\u06dc",
"\u06df"-"\u06e8","\u06ea"-"\u06ed","\u06f0"-"\u06fc","\u070f"-"\u072c","\u0730"-"\u074a",
"\u0780"-"\u07b0","\u0901"-"\u0903","\u0905"-"\u0939","\u093c"-"\u094d","\u0950"-"\u0954",
"\u0958"-"\u0963","\u0966"-"\u096f","\u0981"-"\u0983","\u0985"-"\u098c","\u098f"-"\u0990",
"\u0993"-"\u09a8","\u09aa"-"\u09b0","\u09b2","\u09b6"-"\u09b9","\u09bc","\u09be"-"\u09c4",
"\u09c7"-"\u09c8","\u09cb"-"\u09cd","\u09d7","\u09dc"-"\u09dd","\u09df"-"\u09e3",
"\u09e6"-"\u09f3","\u0a02","\u0a05"-"\u0a0a","\u0a0f"-"\u0a10","\u0a13"-"\u0a28",
"\u0a2a"-"\u0a30","\u0a32"-"\u0a33","\u0a35"-"\u0a36","\u0a38"-"\u0a39","\u0a3c",
"\u0a3e"-"\u0a42","\u0a47"-"\u0a48","\u0a4b"-"\u0a4d","\u0a59"-"\u0a5c","\u0a5e",
"\u0a66"-"\u0a74","\u0a81"-"\u0a83","\u0a85"-"\u0a8b","\u0a8d","\u0a8f"-"\u0a91",
"\u0a93"-"\u0aa8","\u0aaa"-"\u0ab0","\u0ab2"-"\u0ab3","\u0ab5"-"\u0ab9","\u0abc"-"\u0ac5",
"\u0ac7"-"\u0ac9","\u0acb"-"\u0acd","\u0ad0","\u0ae0","\u0ae6"-"\u0aef","\u0b01"-"\u0b03",
"\u0b05"-"\u0b0c","\u0b0f"-"\u0b10","\u0b13"-"\u0b28","\u0b2a"-"\u0b30","\u0b32"-"\u0b33",
"\u0b36"-"\u0b39","\u0b3c"-"\u0b43","\u0b47"-"\u0b48","\u0b4b"-"\u0b4d","\u0b56"-"\u0b57",
"\u0b5c"-"\u0b5d","\u0b5f"-"\u0b61","\u0b66"-"\u0b6f","\u0b82"-"\u0b83","\u0b85"-"\u0b8a",
"\u0b8e"-"\u0b90","\u0b92"-"\u0b95","\u0b99"-"\u0b9a","\u0b9c","\u0b9e"-"\u0b9f",
"\u0ba3"-"\u0ba4","\u0ba8"-"\u0baa","\u0bae"-"\u0bb5","\u0bb7"-"\u0bb9","\u0bbe"-"\u0bc2",
"\u0bc6"-"\u0bc8","\u0bca"-"\u0bcd","\u0bd7","\u0be7"-"\u0bef","\u0c01"-"\u0c03",
"\u0c05"-"\u0c0c","\u0c0e"-"\u0c10","\u0c12"-"\u0c28","\u0c2a"-"\u0c33","\u0c35"-"\u0c39",
"\u0c3e"-"\u0c44","\u0c46"-"\u0c48","\u0c4a"-"\u0c4d","\u0c55"-"\u0c56","\u0c60"-"\u0c61",
"\u0c66"-"\u0c6f","\u0c82"-"\u0c83","\u0c85"-"\u0c8c","\u0c8e"-"\u0c90","\u0c92"-"\u0ca8",
"\u0caa"-"\u0cb3","\u0cb5"-"\u0cb9","\u0cbe"-"\u0cc4","\u0cc6"-"\u0cc8","\u0cca"-"\u0ccd",
"\u0cd5"-"\u0cd6","\u0cde","\u0ce0"-"\u0ce1","\u0ce6"-"\u0cef","\u0d02"-"\u0d03",
"\u0d05"-"\u0d0c","\u0d0e"-"\u0d10","\u0d12"-"\u0d28","\u0d2a"-"\u0d39","\u0d3e"-"\u0d43",
"\u0d46"-"\u0d48","\u0d4a"-"\u0d4d","\u0d57","\u0d60"-"\u0d61","\u0d66"-"\u0d6f",
"\u0d82"-"\u0d83","\u0d85"-"\u0d96","\u0d9a"-"\u0db1","\u0db3"-"\u0dbb","\u0dbd",
"\u0dc0"-"\u0dc6","\u0dca","\u0dcf"-"\u0dd4","\u0dd6","\u0dd8"-"\u0ddf","\u0df2"-"\u0df3",
"\u0e01"-"\u0e3a","\u0e3f"-"\u0e4e","\u0e50"-"\u0e59","\u0e81"-"\u0e82","\u0e84",
"\u0e87"-"\u0e88","\u0e8a","\u0e8d","\u0e94"-"\u0e97","\u0e99"-"\u0e9f","\u0ea1"-"\u0ea3",
"\u0ea5","\u0ea7","\u0eaa"-"\u0eab","\u0ead"-"\u0eb9","\u0ebb"-"\u0ebd","\u0ec0"-"\u0ec4",
"\u0ec6","\u0ec8"-"\u0ecd","\u0ed0"-"\u0ed9","\u0edc"-"\u0edd","\u0f00","\u0f18"-"\u0f19",
"\u0f20"-"\u0f29","\u0f35","\u0f37","\u0f39","\u0f3e"-"\u0f47","\u0f49"-"\u0f6a",
"\u0f71"-"\u0f84","\u0f86"-"\u0f8b","\u0f90"-"\u0f97","\u0f99"-"\u0fbc","\u0fc6",
"\u1000"-"\u1021","\u1023"-"\u1027","\u1029"-"\u102a","\u102c"-"\u1032","\u1036"-"\u1039",
"\u1040"-"\u1049","\u1050"-"\u1059","\u10a0"-"\u10c5","\u10d0"-"\u10f6","\u1100"-"\u1159",
"\u115f"-"\u11a2","\u11a8"-"\u11f9","\u1200"-"\u1206","\u1208"-"\u1246","\u1248",
"\u124a"-"\u124d","\u1250"-"\u1256","\u1258","\u125a"-"\u125d","\u1260"-"\u1286",
"\u1288","\u128a"-"\u128d","\u1290"-"\u12ae","\u12b0","\u12b2"-"\u12b5","\u12b8"-"\u12be",
"\u12c0","\u12c2"-"\u12c5","\u12c8"-"\u12ce","\u12d0"-"\u12d6","\u12d8"-"\u12ee",
"\u12f0"-"\u130e","\u1310","\u1312"-"\u1315","\u1318"-"\u131e","\u1320"-"\u1346",
"\u1348"-"\u135a","\u1369"-"\u1371","\u13a0"-"\u13f4","\u1401"-"\u166c","\u166f"-"\u1676",
"\u1681"-"\u169a","\u16a0"-"\u16ea","\u1780"-"\u17d3","\u17db","\u17e0"-"\u17e9",
"\u180b"-"\u180e","\u1810"-"\u1819","\u1820"-"\u1877","\u1880"-"\u18a9","\u1d00"-"\u1d7f","\u1e00"-"\u1e9b",
"\u1ea0"-"\u1ef9","\u1f00"-"\u1f15","\u1f18"-"\u1f1d","\u1f20"-"\u1f45","\u1f48"-"\u1f4d",
"\u1f50"-"\u1f57","\u1f59","\u1f5b","\u1f5d","\u1f5f"-"\u1f7d","\u1f80"-"\u1fb4",
"\u1fb6"-"\u1fbc","\u1fbe","\u1fc2"-"\u1fc4","\u1fc6"-"\u1fcc","\u1fd0"-"\u1fd3",
"\u1fd6"-"\u1fdb","\u1fe0"-"\u1fec","\u1ff2"-"\u1ff4","\u1ff6"-"\u1ffc","\u200c"-"\u200f",
"\u202a"-"\u202e","\u203f"-"\u2040","\u206a"-"\u206f","\u207f","\u20a0"-"\u20af",
"\u20d0"-"\u20dc","\u20e1","\u2102","\u2107","\u210a"-"\u2113","\u2115","\u2119"-"\u211d",
"\u2124","\u2126","\u2128","\u212a"-"\u212d","\u212f"-"\u2131","\u2133"-"\u2139",
"\u2160"-"\u2183","\u3005"-"\u3007","\u3021"-"\u302f","\u3031"-"\u3035","\u3038"-"\u303a",
"\u3041"-"\u3094","\u3099"-"\u309a","\u309d"-"\u309e","\u30a1"-"\u30fe","\u3105"-"\u312c",
"\u3131"-"\u318e","\u31a0"-"\u31b7","\u3400"-"\u4db5","\u4e00"-"\u9fa5","\ua000"-"\ua48c",
"\ua490"-"\uabff",
"\uac00"-"\ud7a3","\uf900"-"\ufa2d","\ufb00"-"\ufb06","\ufb13"-"\ufb17","\ufb1d"-"\ufb28",
"\ufb2a"-"\ufb36","\ufb38"-"\ufb3c","\ufb3e","\ufb40"-"\ufb41","\ufb43"-"\ufb44",
"\ufb46"-"\ufbb1","\ufbd3"-"\ufd3d","\ufd50"-"\ufd8f","\ufd92"-"\ufdc7","\ufdf0"-"\ufdfb",
"\ufe20"-"\ufe23","\ufe33"-"\ufe34","\ufe4d"-"\ufe4f","\ufe69","\ufe70"-"\ufe72","\ufe74",
"\ufe76"-"\ufefc","\ufeff","\uff04","\uff10"-"\uff19","\uff21"-"\uff3a","\uff3f",
"\uff41"-"\uff5a","\uff65"-"\uffbe","\uffc2"-"\uffc7","\uffca"-"\uffcf","\uffd2"-"\uffd7",
"\uffda"-"\uffdc","\uffe0"-"\uffe1","\uffe5"-"\uffe6","\ufff9"-"\ufffb"]>
}
/* SEPARATORS */
TOKEN :
{
< LPAREN: "(" >
| < RPAREN: ")" >
| < LBRACE: "{" >
| < RBRACE: "}" >
| < LBRACKET: "[" >
| < RBRACKET: "]" >
| < SEMICOLON: ";" >
| < COMMA: "," >
| < DOT: "." >
| < AT: "@" >
}
/* OPERATORS */
TOKEN :
{
< ASSIGN: "=" >
| < LT: "<" >
| < BANG: "!" >
| < TILDE: "~" >
| < HOOK: "?" >
| < COLON: ":" >
| < EQ: "==" >
| < LE: "<=" >
| < GE: ">=" >
| < NE: "!=" >
| < SC_OR: "||" >
| < SC_AND: "&&" >
| < INCR: "++" >
| < DECR: "--" >
| < PLUS: "+" >
| < MINUS: "-" >
| < STAR: "*" >
| < SLASH: "/" >
| < BIT_AND: "&" >
| < BIT_OR: "|" >
| < XOR: "^" >
| < REM: "%" >
| < LSHIFT: "<<" >
// Notice the absence of >> or >>>, to not conflict with generics
| < PLUSASSIGN: "+=" >
| < MINUSASSIGN: "-=" >
| < STARASSIGN: "*=" >
| < SLASHASSIGN: "/=" >
| < ANDASSIGN: "&=" >
| < ORASSIGN: "|=" >
| < XORASSIGN: "^=" >
| < REMASSIGN: "%=" >
| < LSHIFTASSIGN: "<<=" >
| < RSIGNEDSHIFTASSIGN: ">>=" >
| < RUNSIGNEDSHIFTASSIGN: ">>>=" >
| < ELLIPSIS: "..." >
| < LAMBDA: "->" >
| < METHOD_REF: "::" >
}
/* >'s need special attention due to generics syntax. */
TOKEN :
{
< RUNSIGNEDSHIFT: ">>>" >
{
matchedToken.kind = GT;
((Token.GTToken)matchedToken).realKind = RUNSIGNEDSHIFT;
input_stream.backup(2);
matchedToken.image = ">";
}
| < RSIGNEDSHIFT: ">>" >
{
matchedToken.kind = GT;
((Token.GTToken)matchedToken).realKind = RSIGNEDSHIFT;
input_stream.backup(1);
matchedToken.image = ">";
}
| < GT: ">" >
}
/*****************************************
* THE JAVA LANGUAGE GRAMMAR STARTS HERE *
*****************************************/
/*
* Program structuring syntax follows.
*/
ASTCompilationUnit CompilationUnit() :
{}
{
[ LOOKAHEAD( ( Annotation() )* "package" ) PackageDeclaration() ( EmptyStatement() )* ]
( ImportDeclaration() ( EmptyStatement() )* )*
// the module decl lookahead needs to be before the type declaration branch,
// looking for annotations + "open" | "module" will fail faster if it's *not*
// a module (most common case)
[ LOOKAHEAD(ModuleDeclLahead()) ModuleDeclaration() ( EmptyStatement() )* ]
( TypeDeclaration() ( EmptyStatement() )* )*
( < "\u001a" > )?
( < "~[]" > )? // what's this for? Do you mean ( < ~[] > )*, i.e. "any character"?
<EOF>
{
jjtThis.setComments(token_source.comments);
return jjtThis;
}
}
private void ModuleDeclLahead() #void:
{}
{
(Annotation())* LOOKAHEAD({isKeyword("open") || isKeyword("module")}) <IDENTIFIER>
}
void PackageDeclaration() :
{}
{
( Annotation() )* "package" Name() ";"
}
void ImportDeclaration() :
{}
{
"import" [ "static" {checkForBadStaticImportUsage();jjtThis.setStatic();} ] Name() [ "." "*" {jjtThis.setImportOnDemand();} ] ";"
}
/*
* Modifiers. We match all modifiers in a single rule to reduce the chances of
* syntax errors for simple modifier mistakes. It will also enable us to give
* better error messages.
*/
int Modifiers() #void:
{
int modifiers = 0;
}
{
(
LOOKAHEAD(2)
(
"public" { modifiers |= AccessNode.PUBLIC; }
| "static" { modifiers |= AccessNode.STATIC; }
| "protected" { modifiers |= AccessNode.PROTECTED; }
| "private" { modifiers |= AccessNode.PRIVATE; }
| "final" { modifiers |= AccessNode.FINAL; }
| "abstract" { modifiers |= AccessNode.ABSTRACT; }
| "synchronized" { modifiers |= AccessNode.SYNCHRONIZED; }
| "native" { modifiers |= AccessNode.NATIVE; }
| "transient" { modifiers |= AccessNode.TRANSIENT; }
| "volatile" { modifiers |= AccessNode.VOLATILE; }
| "strictfp" { modifiers |= AccessNode.STRICTFP; }
| "default" { modifiers |= AccessNode.DEFAULT; checkForBadDefaultImplementationUsage(); }
| LOOKAHEAD({isKeyword("sealed")}) <IDENTIFIER> { modifiers |= AccessNode.SEALED; checkForSealedClassUsage(); }
| LOOKAHEAD({isNonSealedModifier()}) <IDENTIFIER> <MINUS> <IDENTIFIER> { modifiers |= AccessNode.NON_SEALED; checkForSealedClassUsage(); }
| Annotation()
)
)*
{
return modifiers;
}
}
/*
* Declaration syntax follows.
*/
void TypeDeclaration():
{
int modifiers;
}
{
modifiers = Modifiers()
(
ClassOrInterfaceDeclaration(modifiers)
|
LOOKAHEAD({isKeyword("enum")}) EnumDeclaration(modifiers)
|
AnnotationTypeDeclaration(modifiers)
|
LOOKAHEAD({isKeyword("record")}) RecordDeclaration(modifiers)
)
}
void ClassOrInterfaceDeclaration(int modifiers):
{
Token t = null;
jjtThis.setModifiers(modifiers);
boolean inInterfaceOld = inInterface;
inInterface = false;
}
{
( "class" | "interface" { jjtThis.setInterface(); inInterface = true; } )
t=<IDENTIFIER> { checkForBadTypeIdentifierUsage(t.image); jjtThis.setImage(t.image); }
[ TypeParameters() ]
[ ExtendsList() ]
[ ImplementsList() ]
[ LOOKAHEAD({isKeyword("permits")}) PermittedSubclasses() ]
ClassOrInterfaceBody()
{ inInterface = inInterfaceOld; } // always restore the flag after leaving the node
}
void ExtendsList():
{
boolean extendsMoreThanOne = false;
}
{
"extends" (TypeAnnotation())* ClassOrInterfaceType()
( "," (TypeAnnotation())* ClassOrInterfaceType() { extendsMoreThanOne = true; } )*
}
void ImplementsList():
{}
{
"implements" (TypeAnnotation())* ClassOrInterfaceType()
( "," (TypeAnnotation())* ClassOrInterfaceType() )*
}
void PermittedSubclasses() #PermitsList:
{
Token t;
checkForSealedClassUsage();
}
{
t = <IDENTIFIER> {
if (!"permits".equals(t.image)) {
throw new ParseException("ERROR: expecting permits");
}
}
TypeName()
( "," TypeName() )*
}
void EnumDeclaration(int modifiers):
{
Token t;
jjtThis.setModifiers(modifiers);
}
{
t = <IDENTIFIER> {
if (!"enum".equals(t.image)) {
throw new ParseException("ERROR: expecting enum");
}
if (jdkVersion < 5) {
throw new ParseException("ERROR: Can't use enum as a keyword in pre-JDK 1.5 target");
}
}
t=<IDENTIFIER> {checkForBadTypeIdentifierUsage(t.image); jjtThis.setImage(t.image);}
[ ImplementsList() ]
EnumBody()
}
void EnumBody():
{
boolean inInterfaceOld = inInterface;
inInterface = false;
}
{
"{"
[( Annotation() )* EnumConstant() ( LOOKAHEAD(2) "," ( Annotation() )* EnumConstant() )* ]
[ "," ]
[ ";" ( ClassOrInterfaceBodyDeclaration() )* ]
"}"
{ inInterface = inInterfaceOld; } // always restore the flag after leaving the node
}
void EnumConstant():
{Token t;}
{
t=<IDENTIFIER> {jjtThis.setImage(t.image);} [ Arguments() ] [ ClassOrInterfaceBody() ]
}
void RecordDeclaration(int modifiers):
{
Token t;
jjtThis.setModifiers(modifiers);
checkForRecordType();
}
{
t = <IDENTIFIER> {
if (!"record".equals(t.image)) {
throw new ParseException("ERROR: expecting record");
}
}
t=<IDENTIFIER> {checkForBadTypeIdentifierUsage(t.image); jjtThis.setImage(t.image);}
[ TypeParameters() ]
RecordHeader()
[ ImplementsList() ]
RecordBody()
}
void RecordHeader() #void:
{}
{
"(" RecordComponentList() ")"
}
void RecordComponentList() :
{}
{
[ RecordComponent() ("," RecordComponent())* ]
}
void RecordComponent():
{}
{
(RecordComponentModifier())*
Type()
[ (TypeAnnotation())* "..." {jjtThis.setVarargs();} ]
VariableDeclaratorId()
}
void RecordComponentModifier() #void:
{}
{
Annotation()
}
void RecordBody():
{}
{
"{"
( RecordBodyDeclaration() )*
"}"
}
void RecordBodyDeclaration() #void :
{}
{
LOOKAHEAD(CompactConstructorDeclarationLookahead()) CompactConstructorDeclaration()
|
ClassOrInterfaceBodyDeclaration()
}
private void CompactConstructorDeclarationLookahead() #void:
{}
{
Modifiers() <IDENTIFIER> "{"
}
void CompactConstructorDeclaration():
{
int modifiers;
}
{
modifiers = Modifiers() { jjtThis.setModifiers(modifiers); }
<IDENTIFIER> { jjtThis.setImage(token.image); }
Block()
}
void TypeParameters():
{}
{
"<" {checkForBadGenericsUsage();} TypeParameter() ( "," TypeParameter() )* ">"
}
void TypeParameter():
{Token t;}
{
(TypeAnnotation())*
t=<IDENTIFIER> {jjtThis.setImage(t.image);} [ TypeBound() ]
}
void TypeBound():
{}
{
"extends" (TypeAnnotation())* ClassOrInterfaceType() ( "&" (TypeAnnotation())* ClassOrInterfaceType() )*
}
void ClassOrInterfaceBody():
{}
{
"{" ( ClassOrInterfaceBodyDeclaration() )* "}"
}
void ClassOrInterfaceBodyDeclaration():
{
int modifiers;
}
{ LOOKAHEAD(["static"] "{" ) Initializer()
| modifiers = Modifiers()
( LOOKAHEAD(3) ClassOrInterfaceDeclaration(modifiers)
| LOOKAHEAD({isKeyword("enum")}) EnumDeclaration(modifiers)
| LOOKAHEAD({isKeyword("record")}) RecordDeclaration(modifiers)
| LOOKAHEAD( [ TypeParameters() ] <IDENTIFIER> "(" ) ConstructorDeclaration(modifiers)
| LOOKAHEAD( Type() <IDENTIFIER> ( (Annotation())* "[" "]" )* ( "," | "=" | ";" ) ) FieldDeclaration(modifiers)
| LOOKAHEAD(2) MethodDeclaration(modifiers)
| LOOKAHEAD(2) AnnotationTypeDeclaration(modifiers)
)
|
";"
}
void FieldDeclaration(int modifiers) :
{jjtThis.setModifiers(modifiers);}
{
Type() VariableDeclarator() ( "," VariableDeclarator() )* ";"
}
void VariableDeclarator() :
{}
{
VariableDeclaratorId() [ "=" VariableInitializer() ]
}
void VariableDeclaratorId() :
{
Token t;
String image;
}
{
(LOOKAHEAD(2) t=<IDENTIFIER> "." <THIS> { checkforBadExplicitReceiverParameter(); jjtThis.setExplicitReceiverParameter(); image=t.image + ".this"; }
| t=<THIS> { checkforBadExplicitReceiverParameter(); jjtThis.setExplicitReceiverParameter(); image = t.image;}
| t=<IDENTIFIER> { image = t.image; } ( (TypeAnnotation())* "[" "]" { jjtThis.bumpArrayDepth(); })*
)
{
checkForBadAssertUsage(image, "a variable name");
checkForBadEnumUsage(image, "a variable name");
checkForBadIdentifier(image);
jjtThis.setImage( image );
}
}
void VariableInitializer() :
{}
{
ArrayInitializer()
| Expression()
}
void ArrayInitializer() :
{}
{
"{" [ VariableInitializer() ( LOOKAHEAD(2) "," VariableInitializer() )* ] [ "," ] "}"
}
void MethodDeclaration(int modifiers) :
{
jjtThis.setModifiers(modifiers);
{ checkForBadPrivateInterfaceMethod(jjtThis); }
}
{
[ TypeParameters() ]
(TypeAnnotation())* ResultType() MethodDeclarator() [ "throws" NameList() ]
( Block() | ";" )
}
void MethodDeclarator() :
{Token t;}
{
t=<IDENTIFIER>
{
checkForBadAssertUsage(t.image, "a method name");
checkForBadEnumUsage(t.image, "a method name");
jjtThis.setImage( t.image );
}
FormalParameters() ( (TypeAnnotation())* "[" "]" )*
}
void FormalParameters() :
{}
{
"(" [ FormalParameter() ( "," FormalParameter() )* ] ")"
}
void FormalParameter() :
{
}
{
( "final" {jjtThis.setFinal(true);} | Annotation() )*
Type() ("|" {checkForBadMultipleExceptionsCatching();} (TypeAnnotation())* Type())*
[ (TypeAnnotation())* "..." {checkForBadVariableArgumentsUsage();} {jjtThis.setVarargs();} ]
VariableDeclaratorId()
}
void ConstructorDeclaration(int modifiers) :
{jjtThis.setModifiers(modifiers);
Token t;}
{
[ TypeParameters() ]
<IDENTIFIER> {jjtThis.setImage(getToken(0).getImage());} FormalParameters() [ "throws" NameList() ]
"{"
[ LOOKAHEAD(ExplicitConstructorInvocation()) ExplicitConstructorInvocation() ]
( BlockStatement() )*
t = "}" { if (isPrecededByComment(t)) { jjtThis.setContainsComment(); } }
}
void ExplicitConstructorInvocation() :
{boolean prev = inExplicitConstructorInvoc; inExplicitConstructorInvoc = true;}
{ (
LOOKAHEAD([TypeArguments()] "this" Arguments() ";") [TypeArguments()] "this" {jjtThis.setIsThis();}
|
[ LOOKAHEAD(PrimaryExpression() "." [TypeArguments()] "super" ) PrimaryExpression() "." ] [ TypeArguments() ] "super" {jjtThis.setIsSuper();}
)
{inExplicitConstructorInvoc = prev;}
Arguments() ";"
}
void Initializer() :
{}
{
[ "static" {jjtThis.setStatic();} ] Block()
}
/*
* Type, name and expression syntax follows.
* Type is the same as "UnannType" in JLS
*
* See https://docs.oracle.com/javase/specs/jls/se10/html/jls-8.html#jls-UnannType
*/
void Type():
{
Token t;
}
{
LOOKAHEAD(<IDENTIFIER> | PrimitiveType() (TypeAnnotation())* "[" "]" ) ReferenceType()
| PrimitiveType()
}
void ReferenceType():
{}
{
PrimitiveType() (LOOKAHEAD((TypeAnnotation())* "[" "]") (TypeAnnotation())* "[" "]" { jjtThis.bumpArrayDepth(); })+
|
ClassOrInterfaceType() (LOOKAHEAD((TypeAnnotation())* "[" "]") (TypeAnnotation())* "[" "]" { jjtThis.bumpArrayDepth(); })*
}
void ClassOrInterfaceType():
{
StringBuilder s = new StringBuilder();
Token t;
}
{
t=<IDENTIFIER> {s.append(t.image);}
[ LOOKAHEAD(2) TypeArguments() ]
( LOOKAHEAD(2) "." (TypeAnnotation())* t=<IDENTIFIER> {s.append('.').append(t.image);} [ LOOKAHEAD(2) TypeArguments() ] )*
{jjtThis.setImage(s.toString());}
}
void TypeName() #ClassOrInterfaceType:
{
StringBuilder s = new StringBuilder();
Token t;
}
{
t=<IDENTIFIER> {s.append(t.image);}
( "." t=<IDENTIFIER> {s.append('.').append(t.image);} )*
{jjtThis.setImage(s.toString());}
}
void TypeArguments():
{}
{
LOOKAHEAD(2)
"<" {checkForBadGenericsUsage();} TypeArgument() ( "," TypeArgument() )* ">"
|
"<" {checkForBadDiamondUsage();} ">"
}
void TypeArgument():
{}
{
(TypeAnnotation())* (ReferenceType() | "?" [ WildcardBounds() ])
}
void WildcardBounds():
{}
{
("extends" | "super") (TypeAnnotation())* ReferenceType()
}
void PrimitiveType() :
{}
{
"boolean" {jjtThis.setImage("boolean");}
| "char" {jjtThis.setImage("char");}
| "byte" {jjtThis.setImage("byte");}
| "short" {jjtThis.setImage("short");}
| "int" {jjtThis.setImage("int");}
| "long" {jjtThis.setImage("long");}
| "float" {jjtThis.setImage("float");}
| "double" {jjtThis.setImage("double");}
}
void ResultType() :
{}
{
"void" | Type()
}
void Name() :
/*
* A lookahead of 2 is required below since "Name" can be followed
* by a ".*" when used in the context of an "ImportDeclaration".
*/
{
StringBuilder s = new StringBuilder();
Token t;
}
{
t=<IDENTIFIER>
{
s.append(t.image);
}
( LOOKAHEAD(2) "." t=<IDENTIFIER>
{s.append('.').append(t.image);}
)*
{jjtThis.setImage(s.toString());}
}
void NameList() :
{}
{
(TypeAnnotation())* Name()
( "," (TypeAnnotation())* Name()
)*
}
/*
* Expression syntax follows.
*/
void Expression() :
/*
* This expansion has been written this way instead of:
* Assignment() | ConditionalExpression()
* for performance reasons.
* However, it is a weakening of the grammar for it allows the LHS of
* assignments to be any conditional expression whereas it can only be
* a primary expression. Consider adding a semantic predicate to work
* around this.
*/
// It also allows lambda expressions in many more contexts as allowed by the JLS.
// Lambda expressions are not a PrimaryExpression in the JLS, instead they're
// separated from the AssignmentExpression production. Their use is restricted
// to method and constructor argument, cast operand, and the RHS of assignments.
// https://docs.oracle.com/javase/specs/jls/se9/html/jls-15.html#jls-15.27
//
// To prevent LambdaExpressions in switch labels, the field #inSwitchLabel is used
// as a workaround.
{}
{
ConditionalExpression()
[
LOOKAHEAD(2) AssignmentOperator() Expression()
]
}
void AssignmentOperator() :
{}
{
"=" {jjtThis.setImage("=");}
| "*=" {jjtThis.setImage("*="); jjtThis.setCompound();}
| "/=" {jjtThis.setImage("/="); jjtThis.setCompound();}
| "%=" {jjtThis.setImage("%="); jjtThis.setCompound();}
| "+=" {jjtThis.setImage("+="); jjtThis.setCompound();}
| "-=" {jjtThis.setImage("-="); jjtThis.setCompound();}
| "<<=" {jjtThis.setImage("<<="); jjtThis.setCompound();}
| ">>=" {jjtThis.setImage(">>="); jjtThis.setCompound();}
| ">>>=" {jjtThis.setImage(">>>="); jjtThis.setCompound();}
| "&=" {jjtThis.setImage("&="); jjtThis.setCompound();}
| "^=" {jjtThis.setImage("^="); jjtThis.setCompound();}
| "|=" {jjtThis.setImage("|="); jjtThis.setCompound();}
}
void ConditionalExpression() #ConditionalExpression(>1) :
{}
{
ConditionalOrExpression() [ LOOKAHEAD(2) "?" Expression() ":" ConditionalExpression() ]
}
void ConditionalOrExpression() #ConditionalOrExpression(>1):
{}
{
ConditionalAndExpression() ( LOOKAHEAD(2) "||" ConditionalAndExpression() )*
}
void ConditionalAndExpression() #ConditionalAndExpression(>1):
{}
{
InclusiveOrExpression() ( LOOKAHEAD(2) "&&" InclusiveOrExpression() )*
}
void InclusiveOrExpression() #InclusiveOrExpression(>1) :
{}
{
ExclusiveOrExpression() ( LOOKAHEAD(2) "|" ExclusiveOrExpression() )*
}
void ExclusiveOrExpression() #ExclusiveOrExpression(>1) :
{}
{
AndExpression() ( LOOKAHEAD(2) "^" AndExpression() )*
}
void AndExpression() #AndExpression(>1):
{}
{
EqualityExpression() ( LOOKAHEAD(2) "&" EqualityExpression() )*
}
void EqualityExpression() #EqualityExpression(>1):
{}
{
InstanceOfExpression() ( LOOKAHEAD(2) ( "==" {jjtThis.setImage("==");} | "!=" {jjtThis.setImage("!=");} ) InstanceOfExpression() )*
}
void Pattern() #void:
{}
{
LOOKAHEAD((Annotation())* ReferenceType() "(") RecordPattern()
| LOOKAHEAD("(") ParenthesizedPattern()
| TypePattern()
}
void ParenthesizedPattern() #void:
{checkForParenthesizedPattern();}
{
"(" Pattern() ")" { AstImplUtil.bumpParenDepth((ASTPattern) jjtree.peekNode()); }
}
void TypePattern():
{checkforBadInstanceOfPattern();}
{
( "final" {jjtThis.setFinal(true);} | Annotation() )*
Type()
VariableDeclaratorId()
}
void RecordPattern():
{ checkForRecordPatterns(); }
{
(Annotation())* ReferenceType() RecordStructurePattern() [ VariableDeclaratorId() ]
}
void RecordStructurePattern() #ComponentPatternList:
{}
{
"(" [ RecordComponentPatternList() ] ")"
}
void RecordComponentPatternList() #void:
{}
{
Pattern() ( "," Pattern() )*
}
void InstanceOfExpression() #InstanceOfExpression(>1):
{}
{
RelationalExpression()
[ "instanceof"
(
LOOKAHEAD(Pattern()) Pattern()
| (Annotation())* Type()
)
]
}
void RelationalExpression() #RelationalExpression(>1):
{}
{
ShiftExpression()
( LOOKAHEAD(2)
( "<" {jjtThis.setImage("<");}
| ">" {jjtThis.setImage(">");}
| "<=" {jjtThis.setImage("<=");}
| ">=" {jjtThis.setImage(">=");}
) ShiftExpression() )*
}
void ShiftExpression() #ShiftExpression(>1):
{}
{
AdditiveExpression()
( LOOKAHEAD(2)
( "<<" { jjtThis.setImage("<<");}
| RSIGNEDSHIFT() { jjtThis.setImage(">>"); }
| RUNSIGNEDSHIFT() { jjtThis.setImage(">>>"); }
) AdditiveExpression() )*
}
void AdditiveExpression() #AdditiveExpression(>1):
{}
{
MultiplicativeExpression() ( LOOKAHEAD(2) ( "+" {jjtThis.setImage("+");} | "-" {jjtThis.setImage("-");} ) MultiplicativeExpression() )*
}
void MultiplicativeExpression() #MultiplicativeExpression(>1):
{}
{
UnaryExpression() ( LOOKAHEAD(2) ( "*" {jjtThis.setImage("*");} | "/" {jjtThis.setImage("/");} | "%" {jjtThis.setImage("%");}) UnaryExpression() )*
}
void UnaryExpression() #UnaryExpression((jjtn000.getImage() != null)):
{}
{
("+" {jjtThis.setImage("+");} | "-" {jjtThis.setImage("-");}) UnaryExpression()
| PreIncrementExpression()
| PreDecrementExpression()
| UnaryExpressionNotPlusMinus()
}
void PreIncrementExpression() :
{}
{
"++" PrimaryExpression()
}
void PreDecrementExpression() :
{}
{
"--" PrimaryExpression()
}
void UnaryExpressionNotPlusMinus() #UnaryExpressionNotPlusMinus((jjtn000.getImage() != null)):
{}
{
( "~" {jjtThis.setImage("~");} | "!" {jjtThis.setImage("!");} ) UnaryExpression()
/*
* This is really ugly... we are repeating the CastExpression lookahead and full expression...
* If we don't the lookahead within CastExpression is ignored, and it simply looks for the expression,
* meaning we can't be explicit as to what can be casted depending on the cast type (primitive or otherwise)
*/
| LOOKAHEAD("(" (Annotation())* PrimitiveType() ")") CastExpression()
| LOOKAHEAD("(" (Annotation())* Type() ( "&" ReferenceType() )* ")" UnaryExprNotPmStart()) CastExpression()
| PostfixExpression() // this may be a parenthesized expr, which is why we have lookaheads
| SwitchExpression()
}
private void UnaryExprNotPmStart() #void:
{}
{
// Condensed FIRST set of UnaryExpressionNotPlusMinus
// Avoid looking ahead for a whole UnaryExpressionNotPlusMinus, but just for a token
"~" | "!" | "(" | "switch" | "new" | "this" | "super" | Literal() | "@"
| <IDENTIFIER>
| "void" | PrimitiveType()
}
void PostfixExpression() #PostfixExpression((jjtn000.getImage() != null)):
{}
{
PrimaryExpression() [ "++" {jjtThis.setImage("++");} | "--" {jjtThis.setImage("--");} ]
}
void CastExpression() :
{}
{
LOOKAHEAD(
"(" (Annotation())* PrimitiveType() ")"
) "(" (TypeAnnotation())* Type() ")" UnaryExpression()
| "(" (TypeAnnotation())* Type() ( "&" {checkForBadIntersectionTypesInCasts(); jjtThis.setIntersectionTypes(true);} ReferenceType() )* ")" UnaryExpressionNotPlusMinus()
}
void SwitchExpression() :
{boolean prevInSwitchBlock = inSwitchExprBlock;}
{
{checkForSwitchExpression();}
"switch" "(" Expression() ")"
{inSwitchExprBlock = true;}
SwitchBlock()
{inSwitchExprBlock = prevInSwitchBlock;}
}
void PrimaryExpression() :
{}
{
PrimaryPrefix() ( LOOKAHEAD(SuffixLAhead()) PrimarySuffix() )*
}
private void SuffixLAhead() #void:
{}
{
"::" | "[" | "("
| LOOKAHEAD({!inExplicitConstructorInvoc}) "."
| LOOKAHEAD({inExplicitConstructorInvoc}) "." (<IDENTIFIER> | TypeArguments() <IDENTIFIER> | "new") // not super or this in this case
}
void MemberSelector():
{
Token t;
}
{
"." TypeArguments() t=<IDENTIFIER> {jjtThis.setImage(t.image);}
| MethodReference()
}
void MethodReference() :
{Token t; checkForBadMethodReferenceUsage();}
{
"::" [TypeArguments()] ( "new" {jjtThis.setImage("new");} | t=<IDENTIFIER> {jjtThis.setImage(t.image);} )
}
void PrimaryPrefix() :
{Token t;}
{
Literal()
| LOOKAHEAD(2) "this" {jjtThis.setUsesThisModifier();}
| "super" {jjtThis.setUsesSuperModifier();}
| LOOKAHEAD( <IDENTIFIER> "->", {!inSwitchLabel} ) LambdaExpression()
| LOOKAHEAD( "(" VariableDeclaratorId() ( "," VariableDeclaratorId() )* ")" "->", {!inSwitchLabel} ) LambdaExpression()
| LOOKAHEAD( FormalParameters() "->", {!inSwitchLabel} ) LambdaExpression()
| LOOKAHEAD(3) "(" Expression() ")"
| AllocationExpression()
| LOOKAHEAD( ResultType() "." "class" ) ResultType() "." "class"
| LOOKAHEAD( Name() "::" ) Name() // followed by method reference in PrimarySuffix
| LOOKAHEAD( "@" | Type() "::" ) (Annotation())* (LOOKAHEAD(2) ReferenceType()|PrimitiveType()) // followed by method reference in PrimarySuffix
| Name()
}
void LambdaExpression() :
{ checkForBadLambdaUsage(); }
{
VariableDeclaratorId() "->" ( Expression() | Block() )
| LOOKAHEAD(3) LambdaParameters() "->" ( Expression() | Block() )
| LOOKAHEAD(3) "(" VariableDeclaratorId() ( "," VariableDeclaratorId() )* ")" "->" ( Expression() | Block() )
}
void LambdaParameters() #FormalParameters :
{}
{
"(" [ LambdaParameterList() ] ")"
}
void LambdaParameterList() #void :
{}
{
LambdaParameter() ( "," LambdaParameter() )*
}
void LambdaParameter() #FormalParameter :
{}
{
( "final" {jjtThis.setFinal(true);} | Annotation() )*
LambdaParameterType()
[(TypeAnnotation())* "..." {checkForBadVariableArgumentsUsage();} {jjtThis.setVarargs();} ]
VariableDeclaratorId()
}
void LambdaParameterType() #void :
{}
{
LOOKAHEAD( { jdkVersion >= 11 && isKeyword("var") } ) <IDENTIFIER>
| Type()
}
void PrimarySuffix() :
{Token t;}
{ LOOKAHEAD(2) "." "this"
| LOOKAHEAD(2) "." "super"
| LOOKAHEAD(2) "." AllocationExpression()
| LOOKAHEAD(3) MemberSelector()
| "[" Expression() "]" {jjtThis.setIsArrayDereference();}
| "." t=<IDENTIFIER> {jjtThis.setImage(t.image);}
| Arguments() {jjtThis.setIsArguments();}
}
void Literal() :
{ Token t;}
{
t=<INTEGER_LITERAL> { checkForBadNumericalLiteralslUsage(t); jjtThis.setImage(t.image); jjtThis.setIntLiteral();}
| t=<FLOATING_POINT_LITERAL> { checkForBadNumericalLiteralslUsage(t); jjtThis.setImage(t.image); jjtThis.setFloatLiteral();}
| t=<HEX_FLOATING_POINT_LITERAL> { checkForBadHexFloatingPointLiteral(); checkForBadNumericalLiteralslUsage(t); jjtThis.setImage(t.image); jjtThis.setFloatLiteral();}
| t=<CHARACTER_LITERAL> {jjtThis.setImage(t.image); jjtThis.setCharLiteral();}
| t=<STRING_LITERAL> {jjtThis.setImage(t.image); checkForNewStringSpaceEscape(t.image); jjtThis.setStringLiteral(); }
| t=<TEXT_BLOCK_LITERAL> { checkForTextBlockLiteral(); checkForNewStringSpaceEscape(t.image); jjtThis.setImage(t.image); jjtThis.setStringLiteral();}
| BooleanLiteral()
| NullLiteral()
}
void BooleanLiteral() :
{}
{
"true" { jjtThis.setTrue(); } | "false"
}
void NullLiteral() :
{}
{ "null" }
void Arguments() :
{}
{
"(" [ ArgumentList() ] ")"
}
void ArgumentList() :
{}
{
Expression() ( "," Expression() )*
}
void AllocationExpression():
{}
{
"new"
(LOOKAHEAD((TypeAnnotation())* PrimitiveType())
(TypeAnnotation())* PrimitiveType() ArrayDimsAndInits()
|
[TypeArguments()]
(TypeAnnotation())*
ClassOrInterfaceType()
(
ArrayDimsAndInits()
|
Arguments()
[
{ boolean inInterfaceOld = inInterface; inInterface = false; /* a anonymous class is not a interface */ }
ClassOrInterfaceBody()
{ inInterface = inInterfaceOld; } // always restore the flag after leaving the node
]
)
{ checkForBadAnonymousDiamondUsage(); }
)
}
/*
* The second LOOKAHEAD specification below is to parse to PrimarySuffix
* if there is an expression between the "[...]".
*/
void ArrayDimsAndInits() :
{}
{
LOOKAHEAD((TypeAnnotation())* "[" "]") ((TypeAnnotation())* "[" "]" {jjtThis.bumpArrayDepth();})+ ArrayInitializer()
| ( LOOKAHEAD((TypeAnnotation())* "[" UnaryExprNotPmStart() ) (TypeAnnotation())* "[" Expression() "]" {jjtThis.bumpArrayDepth();} )+
( LOOKAHEAD((TypeAnnotation())* "[") (TypeAnnotation())* "[" "]" {jjtThis.bumpArrayDepth();} )*
}
/*
* Statement syntax follows.
*/
void Statement() :
{}
{
LOOKAHEAD( { isNextTokenAnAssert() } ) AssertStatement()
| LOOKAHEAD( { isYieldStart() } ) YieldStatement()
| LOOKAHEAD(2) LabeledStatement()
| Block()
| EmptyStatement()
| StatementExpression() ";"
| SwitchStatement()
| IfStatement()
| WhileStatement()
| DoStatement()
| ForStatement()
| BreakStatement()
| ContinueStatement()
| ReturnStatement()
| ThrowStatement()
| SynchronizedStatement()
| TryStatement()
}
void LabeledStatement() :
{Token t;}
{
t=<IDENTIFIER> {jjtThis.setImage(t.image);} ":" Statement()
}
void Block() :
{Token t;}
{
"{"
( BlockStatement() )* t = "}" { if (isPrecededByComment(t)) { jjtThis.setContainsComment(); } }
}
void BlockStatement():
{int mods = 0;}
{
LOOKAHEAD( { isNextTokenAnAssert() } ) AssertStatement()
| LOOKAHEAD( { isYieldStart() } ) YieldStatement()
| LOOKAHEAD( "@" | "final" )
// this eagerly parses all modifiers and annotations. After that, either a local type declaration
// or a local variable declaration follows.
// This allows more modifiers for local variables than actually allowed
// and the annotations for local variables need to be moved in the AST down again.
mods=Modifiers()
(
LOOKAHEAD({localTypeDeclLookahead()}) LocalTypeDecl(mods)
|
{
List<Node> annotationsAndChildren = new ArrayList<Node>();
if (jjtree.nodeArity() > 0) { // peekNode would throw if the stack is empty
while (jjtree.peekNode() instanceof ASTAnnotation) {
annotationsAndChildren.add(jjtree.popNode());
}
}
}
LocalVariableDeclaration()
{
ASTLocalVariableDeclaration localVarDecl = (ASTLocalVariableDeclaration) jjtree.peekNode();
if ((mods & AccessNode.FINAL) == AccessNode.FINAL) {
localVarDecl.setFinal(true);
}
if (!annotationsAndChildren.isEmpty()) {
Collections.reverse(annotationsAndChildren);
for (int i = 0; i < localVarDecl.getNumChildren(); i++) {
annotationsAndChildren.add(localVarDecl.getChild(i));
}
for (int i = 0; i < annotationsAndChildren.size(); i++) {
Node child = annotationsAndChildren.get(i);
child.jjtSetParent(localVarDecl);
localVarDecl.jjtAddChild(child, i);
}
}
}
";"
)
| LOOKAHEAD({classModifierForLocalTypesLookahead() || localTypeDeclLookahead()})
mods=Modifiers()
LocalTypeDecl(mods)
| LOOKAHEAD(Type() <IDENTIFIER>)
LocalVariableDeclaration() ";"
|
Statement()
}
void LocalTypeDecl(int mods) #void:
{}
{
(
LOOKAHEAD(<CLASS>) ClassOrInterfaceDeclaration(mods)
| LOOKAHEAD(<INTERFACE>) ClassOrInterfaceDeclaration(mods) { checkForLocalInterfaceOrEnumType(); }
| LOOKAHEAD({isKeyword("record")}) RecordDeclaration(mods) { checkForLocalInterfaceOrEnumType(); }
| LOOKAHEAD({isKeyword("enum")}) EnumDeclaration(mods) { checkForLocalInterfaceOrEnumType(); }
)
}
/*
* See https://docs.oracle.com/javase/specs/jls/se10/html/jls-14.html#jls-14.4
*/
void LocalVariableDeclaration() :
{}
{
( "final" {jjtThis.setFinal(true);} | Annotation() )*
LocalVariableType()
VariableDeclarator()
( "," VariableDeclarator() )*
}
void LocalVariableType() #void :
{}
{
LOOKAHEAD( { jdkVersion >= 10 && isKeyword("var") } ) <IDENTIFIER>
| Type()
}
void EmptyStatement() :
{}
{
";"
}
void StatementExpression() :
{}
{
PreIncrementExpression()
|
PreDecrementExpression()
|
// using PostfixExpression here allows us to skip the part of the production tree
// between Expression() and PostfixExpression()
PostfixExpression() [ AssignmentOperator() Expression() ]
}
void SwitchStatement():
{}
{
"switch" "(" Expression() ")" SwitchBlock()
}
void SwitchBlock() #void :
{}
{
"{"
(
SwitchLabel()
(
"->" SwitchLabeledRulePart() (SwitchLabeledRule())*
|
":" (LOOKAHEAD(2) SwitchLabel() ":")*
// the lookahead is to prevent choosing BlockStatement when the token is "default",
// which could happen as local class declarations accept the "default" modifier.
(LOOKAHEAD({shouldStartStatementInSwitch()}) BlockStatement())*
(SwitchLabeledStatementGroup())*
)
)?
"}"
}
void SwitchLabeledRule() #void :
{checkForSwitchRules();}
{
SwitchLabel() "->" SwitchLabeledRulePart()
}
void SwitchLabeledRulePart() #void:
{checkForSwitchRules();}
{
(
( Expression() ";" ) #SwitchLabeledExpression(2)
|
( Block() ) #SwitchLabeledBlock(2)
|
( ThrowStatement() ) #SwitchLabeledThrowStatement(2)
)
}
// For PMD 7, make this a real node to group the labels + statements
void SwitchLabeledStatementGroup() #void:
{}
{
(LOOKAHEAD(2) SwitchLabel() ":")+
// the lookahead is to prevent choosing BlockStatement when the token is "default",
// which could happen as local class declarations accept the "default" modifier.
(LOOKAHEAD({shouldStartStatementInSwitch()}) BlockStatement() )*
}
void SwitchLabel() :
{}
{
{ inSwitchLabel = true; }
(
"case" CaseLabelElement(jjtThis) ( {checkForMultipleCaseLabels();} "," CaseLabelElement(jjtThis) )*
|
"default" {jjtThis.setDefault();}
)
{ inSwitchLabel = false; }
}
void CaseLabelElement(ASTSwitchLabel label) #void:
{}
{
"default" {label.setDefault(); checkForDefaultCaseLabel();} // only valid in java-19-preview
|
NullLiteral() {checkForNullCaseLabel();}
[
// this lookahead is only required to allow parsing java-19-preview code
// since java-20-preview, combining null is only allowed with default
LOOKAHEAD(2)
"," "default" {label.setDefault(); checkForNullWithDefaultCaseLabel();}
]
|
LOOKAHEAD(Pattern()) Pattern() {checkForPatternMatchingInSwitch();} ( LOOKAHEAD({isKeyword("when")}) Guard() )*
|
ConditionalExpression() #Expression
}
void Guard() #SwitchGuard:
{
Token t;
checkForGuard();
}
{
t = <IDENTIFIER> {
if (!"when".equals(t.image)) {
throw new ParseException("ERROR: expected 'when'");
}
}
Expression()
}
void YieldStatement() :
{ checkForYieldStatement(); }
{
<IDENTIFIER> Expression() ";"
}
void IfStatement() :
/*
* The disambiguating algorithm of JavaCC automatically binds dangling
* else's to the innermost if statement. The LOOKAHEAD specification
* is to tell JavaCC that we know what we are doing.
*/
{}
{
"if" "(" Expression() ")" Statement() [ LOOKAHEAD(1) "else" {jjtThis.setHasElse();} Statement() ]
}
void WhileStatement() :
{}
{
"while" "(" Expression() ")" Statement()
}
void DoStatement() :
{}
{
"do" Statement() "while" "(" Expression() ")" ";"
}
void ForStatement() :
{}
{
"for" "("
(
LOOKAHEAD(LocalVariableDeclaration() ":")
{checkForBadJDK15ForLoopSyntaxArgumentsUsage();}
LocalVariableDeclaration() ":" Expression()
|
[ ForInit() ] ";"
[ Expression() ] ";"
[ ForUpdate() ]
)
")" Statement()
}
void ForInit() :
{}
{
LOOKAHEAD( LocalVariableDeclaration() )
LocalVariableDeclaration()
|
StatementExpressionList()
}
void StatementExpressionList() :
{}
{
StatementExpression() ( "," StatementExpression() )*
}
void ForUpdate() :
{}
{
StatementExpressionList()
}
void BreakStatement() :
{Token t;}
{
"break" [ t=<IDENTIFIER> {jjtThis.setImage(t.image);} ] ";"
}
void ContinueStatement() :
{Token t;}
{
"continue" [ t=<IDENTIFIER> {jjtThis.setImage(t.image);} ] ";"
}
void ReturnStatement() :
{}
{
"return" [ Expression() ] ";"
}
void ThrowStatement() :
{}
{
"throw" Expression() ";"
}
void SynchronizedStatement() :
{}
{
"synchronized" "(" Expression() ")" Block()
}
void TryStatement() :
/*
* Semantic check required here to make sure that at least one
* resource/finally/catch is present.
*/
{}
{
"try" (ResourceSpecification())? Block()
( CatchStatement() )*
[ FinallyStatement() ]
}
void ResourceSpecification() :
{}
{
{checkForBadTryWithResourcesUsage();}
"("
Resources()
(LOOKAHEAD(2) ";")?
")"
}
void Resources() :
{}
{
Resource() (LOOKAHEAD(2) ";" Resource())*
}
void Resource() :
{}
{
LOOKAHEAD("this" | Name() (")" | ";")) (
{checkForBadConciseTryWithResourcesUsage();}
Name()
// replaced with Expression in PMD 7, do the bare minimum
| "this" "." Name() // possible pmd6 improvement: add a isThisModifier() or so
)
| ( "final" {jjtThis.setFinal(true);} | Annotation() )*
LocalVariableType() VariableDeclaratorId() "=" Expression()
}
void CatchStatement() :
{}
{
"catch"
"(" FormalParameter() ")"
Block()
}
void FinallyStatement() :
{}
{
"finally" Block()
}
void AssertStatement() :
{
if (jdkVersion <= 3) {
throw new ParseException("Can't use 'assert' as a keyword when running in JDK 1.3 mode!");
}
}
{
<IDENTIFIER> Expression() [ ":" Expression() ] ";"
}
/* We use productions to match >>>, >> and > so that we can keep the
* type declaration syntax with generics clean
*/
void RUNSIGNEDSHIFT(): // TODO 7.0.0 make #void
{}
{
( LOOKAHEAD({ getToken(1).kind == GT &&
((Token.GTToken)getToken(1)).realKind == RUNSIGNEDSHIFT} )
">" ">" ">"
)
}
void RSIGNEDSHIFT(): // TODO 7.0.0 make #void
{}
{
( LOOKAHEAD({ getToken(1).kind == GT &&
((Token.GTToken)getToken(1)).realKind == RSIGNEDSHIFT} )
">" ">"
)
}
/* Annotation syntax follows. */
void Annotation():
{}
{
LOOKAHEAD( "@" Name() "(" ( <IDENTIFIER> "=" | ")" ))
NormalAnnotation()
|
LOOKAHEAD( "@" Name() "(" )
SingleMemberAnnotation()
|
MarkerAnnotation()
}
void NormalAnnotation():
{}
{
"@" Name() "(" [ MemberValuePairs() ] ")" {checkForBadAnnotationUsage();}
}
void MarkerAnnotation():
{}
{
"@" Name() {checkForBadAnnotationUsage();}
}
void SingleMemberAnnotation():
{}
{
"@" Name() "(" MemberValue() ")" {checkForBadAnnotationUsage();}
}
void MemberValuePairs():
{}
{
MemberValuePair() ( "," MemberValuePair() )*
}
void MemberValuePair():
{Token t;}
{
t=<IDENTIFIER> { jjtThis.setImage(t.image); } "=" MemberValue()
}
void MemberValue():
{}
{
Annotation()
|
MemberValueArrayInitializer()
|
ConditionalExpression()
}
void MemberValueArrayInitializer():
{}
{
"{" (MemberValue() ( LOOKAHEAD(2) "," MemberValue() )*)? [ "," ] "}"
}
/*
* We use that ghost production to factorise the check for JDK >= 1.8.
*/
void TypeAnnotation() #void:
{}
{
Annotation() {checkForBadTypeAnnotations();}
}
/* Annotation Types. */
void AnnotationTypeDeclaration(int modifiers):
{
Token t;
jjtThis.setModifiers(modifiers);
}
{
"@" "interface" t=<IDENTIFIER>
{
checkForBadAnnotationUsage();
checkForBadTypeIdentifierUsage(t.image);
jjtThis.setImage(t.image);
}
AnnotationTypeBody()
}
void AnnotationTypeBody():
{}
{
"{" ( AnnotationTypeMemberDeclaration() )* "}"
}
void AnnotationTypeMemberDeclaration():
{
int modifiers;
}
{
modifiers = Modifiers()
(
LOOKAHEAD(Type() <IDENTIFIER> "(") AnnotationMethodDeclaration(modifiers)
|
ClassOrInterfaceDeclaration(modifiers)
|
LOOKAHEAD(3) EnumDeclaration(modifiers)
|
AnnotationTypeDeclaration(modifiers)
|
FieldDeclaration(modifiers)
)
|
( ";" )
}
void AnnotationMethodDeclaration(int modifiers):
{
Token t;
jjtThis.setModifiers(modifiers);
}
{
Type() t=<IDENTIFIER> "(" ")" [ DefaultValue() ] ";"
{
jjtThis.setImage(t.image);
}
}
void DefaultValue():
{}
{
"default" MemberValue()
}
void ModuleDeclaration():
{
StringBuilder s = new StringBuilder();
Token t;
checkForBadModuleUsage();
}
{
( Annotation() )* [LOOKAHEAD({isKeyword("open")}) <IDENTIFIER> {jjtThis.setOpen(true);}] LOOKAHEAD({isKeyword("module")}) <IDENTIFIER>
t=<IDENTIFIER> { s.append(t.image); }
( "." t=<IDENTIFIER> { s.append('.').append(t.image); } )* { jjtThis.setImage(s.toString()); }
"{" (ModuleDirective())* "}"
}
void ModuleDirective():
{}
{
( LOOKAHEAD({isKeyword("requires")}) <IDENTIFIER> { jjtThis.setType(ASTModuleDirective.DirectiveType.REQUIRES); }
(LOOKAHEAD({isKeyword("transitive")}) <IDENTIFIER> { jjtThis.setRequiresModifier(ASTModuleDirective.RequiresModifier.TRANSITIVE); } |
"static" { jjtThis.setRequiresModifier(ASTModuleDirective.RequiresModifier.STATIC); } )?
ModuleName() ";" )
| ( LOOKAHEAD({isKeyword("exports")}) <IDENTIFIER> { jjtThis.setType(ASTModuleDirective.DirectiveType.EXPORTS); } Name() [ LOOKAHEAD({isKeyword("to")}) <IDENTIFIER> ModuleName() ("," ModuleName())*] ";" )
| ( LOOKAHEAD({isKeyword("opens")}) <IDENTIFIER> { jjtThis.setType(ASTModuleDirective.DirectiveType.OPENS); } Name() [ LOOKAHEAD({isKeyword("to")}) <IDENTIFIER> ModuleName() ("," ModuleName())*] ";" )
| ( LOOKAHEAD({isKeyword("uses")}) <IDENTIFIER> { jjtThis.setType(ASTModuleDirective.DirectiveType.USES); } Name() ";" )
| ( LOOKAHEAD({isKeyword("provides")}) <IDENTIFIER> { jjtThis.setType(ASTModuleDirective.DirectiveType.PROVIDES); } Name() LOOKAHEAD({isKeyword("with")}) <IDENTIFIER> Name() ("," Name() )* ";" )
}
// Similar to Name()
void ModuleName():
{
StringBuilder s = new StringBuilder();
Token t;
}
{
t=<IDENTIFIER> { s.append(t.image); }
( "." t=<IDENTIFIER> {s.append('.').append(t.image);} )*
{jjtThis.setImage(s.toString());}
}