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Posted to notifications@groovy.apache.org by "Daniel Sun (JIRA)" <ji...@apache.org> on 2017/02/08 08:06:41 UTC
[jira] [Updated] (GROOVY-8083) Fails to implement interface
[ https://issues.apache.org/jira/browse/GROOVY-8083?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Sun updated GROOVY-8083:
-------------------------------
Description:
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 ):
{code}
/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
{code}
was:
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
> 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 ):
> {code}
> /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
> {code}
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