[jira] [Created] (GROOVY-7921) not work to replace "this" with Category annotation

[kyon_mm (JIRA)]

kyon_mm created GROOVY-7921:
-------------------------------

             Summary: not work to replace "this" with Category annotation
                 Key: GROOVY-7921
                 URL: https://issues.apache.org/jira/browse/GROOVY-7921
             Project: Groovy
          Issue Type: Bug
    Affects Versions: 2.4.7
         Environment: mac os x 10.10.5
jdk 1.8.0_51
            Reporter: kyon_mm


when I executed this code in GroovyConsole
{code:java}
import groovy.transform.Field

@Category(Integer)
class IntegerEx {
  def reset(int value) {
    this = value
    this
  }
}
use(IntegerEx){
  println (1 + 2).reset(1)
}
{code}

Then, I get this exception log
{code}
Exception thrown

BUG! exception in phase 'semantic analysis' in source unit 'ConsoleScript17' 
null
        at 
org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:935)
        at 
org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:593)
        at 
org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:542)
        at 
groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:298)
        at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:268)
        at groovy.lang.GroovyShell.parseClass(GroovyShell.java:688)
        at groovy.lang.GroovyShell.run(GroovyShell.java:517)
        at groovy.lang.GroovyShell.run(GroovyShell.java:497)
        at groovy.lang.GroovyShell.run(GroovyShell.java:170)
        at groovy.lang.GroovyShell$run$1.call(Unknown Source)
        at 
groovy.ui.Console$_runScriptImpl_closure16.doCall(Console.groovy:1005)
        at groovy.ui.Console$_runScriptImpl_closure16.doCall(Console.groovy)
        at sun.reflect.GeneratedMethodAccessor218.invoke(Unknown Source)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:497)
        at 
org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:93)
        at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:325)
        at 
org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:294)
        at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1024)
        at groovy.lang.Closure.call(Closure.java:414)
        at groovy.lang.Closure.call(Closure.java:408)
        at groovy.lang.Closure.run(Closure.java:495)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
        at 
org.codehaus.groovy.classgen.VariableScopeVisitor.checkForFinal(VariableScopeVisitor.java:388)
        at 
org.codehaus.groovy.classgen.VariableScopeVisitor.checkFinalFieldAccess(VariableScopeVisitor.java:381)
        at 
org.codehaus.groovy.classgen.VariableScopeVisitor.visitBinaryExpression(VariableScopeVisitor.java:365)
        at 
org.codehaus.groovy.ast.expr.BinaryExpression.visit(BinaryExpression.java:51)
        at 
org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:71)
        at 
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:196)
        at 
org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:42)
        at 
org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:37)
        at 
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:166)
        at 
org.codehaus.groovy.classgen.VariableScopeVisitor.visitBlockStatement(VariableScopeVisitor.java:308)
        at 
org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:71)
        at 
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:104)
        at 
org.codehaus.groovy.classgen.VariableScopeVisitor.visitConstructorOrMethod(VariableScopeVisitor.java:505)
        at 
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:126)
        at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1078)
        at 
org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:53)
        at 
org.codehaus.groovy.classgen.VariableScopeVisitor.visitClass(VariableScopeVisitor.java:473)
        at 
org.codehaus.groovy.control.CompilationUnit$11.call(CompilationUnit.java:648)
        at 
org.codehaus.groovy.control.CompilationUnit.applyToSourceUnits(CompilationUnit.java:931)
        ... 22 more
{code}

Is this behavior groovy-language specification ?



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