[jira] [Created] (GROOVY-8083) Fails to implement interface

["Daniel Sun (JIRA)" <ji...@apache.org>]

Daniel Sun created GROOVY-8083:
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             Summary: Fails to implement interface
                 Key: GROOVY-8083
                 URL: https://issues.apache.org/jira/browse/GROOVY-8083
             Project: Groovy
          Issue Type: Bug
    Affects Versions: 3.0
         Environment: java version "1.8.0_121"
            Reporter: Daniel Sun


I tried to extend GroovyCodeVisitor to support visiting lambda expression, but AstNodeToScriptVisitor fails to implement the interface GroovyCodeVisitor. 

Even if visitLambdaExpression is implemented by AstNodeToScriptVisitor, but still failed to compile, so I have to provide a default implementation for visitLambdaExpression method...

Error messages(https://travis-ci.org/danielsun1106/groovy/builds/199517082):
/home/travis/build/danielsun1106/groovy/subprojects/groovy-parser-antlr4/src/test/groovy/org/apache/groovy/parser/antlr4/util/AstDumper.groovy: 85: Can't have an abstract method in a non-abstract class. The class 'org.apache.groovy.parser.antlr4.util.AstNodeToScriptVisitor' must be declared abstract or the method 'void visitLambdaExpression(org.codehaus.groovy.ast.expr.LambdaExpression)' must be implemented.

 @ line 85, column 1.

   class AstNodeToScriptVisitor extends CompilationUnit.PrimaryClassNodeOperation implements GroovyCodeVisitor, GroovyClassVisitor {

   ^

1 error

 FAILED



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