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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