[GROOVY-10677] Parser Bug

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 3.0.11, 4.0.3
• Component/s: parser-antlr4
• Assignee: Unassigned
• Reporter: Paul King
• Created: 03/Jul/22 12:43
• Updated: 03/Jul/22 12:45

Description

For the following erroneous script (note opening triple quotes and closing single quote):

new GroovyShell().parse('''class Foo {}')

Parsing fails with this error:

1 compilation error:
Exception thrown
java.lang.StringIndexOutOfBoundsException: index 0,length 0
	at java.base/java.lang.String.checkIndex(String.java:3278)
	at java.base/java.lang.String.codePointAt(String.java:723)
	at org.apache.groovy.parser.antlr4.AstBuilder.validateExpressionListElement(AstBuilder.java:3225)
	at org.apache.groovy.parser.antlr4.AstBuilder.visitExpressionListElement(AstBuilder.java:3204)
	at org.apache.groovy.parser.antlr4.AstBuilder.visitEnhancedArgumentListElement(AstBuilder.java:2424)
...
	at org.apache.groovy.parser.antlr4.AstBuilder.visitEnhancedArgumentListInPar(AstBuilder.java:2369)
	at org.apache.groovy.parser.antlr4.AstBuilder.visitCommandExpression(AstBuilder.java:1878)