GRECLIPSE

Type inferencing not supported for multiple assignment declarations.

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Description

I received the following exception after pressing F5 to refresh the PluginInstallEngine in the Grails codebase:

java.lang.RuntimeException: Not implemented...Please raise a bug for this.
at org.eclipse.jdt.groovy.search.InferenceByAssignmentStatement.lookupType(InferenceByAssignmentStatement.java:54)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.handleExpression(TypeInferencingVisitorWithRequestor.java:567)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitBinaryExpression(TypeInferencingVisitorWithRequestor.java:681)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitDeclarationExpression(TypeInferencingVisitorWithRequestor.java:817)
at org.codehaus.groovy.ast.expr.DeclarationExpression.visit(DeclarationExpression.java:53)
at org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:69)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:206)
at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:40)
at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:35)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:176)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitBlockStatement(TypeInferencingVisitorWithRequestor.java:765)
at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:51)
at org.codehaus.groovy.ast.CodeVisitorSupport.visitIfElse(CodeVisitorSupport.java:56)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitIfElse(ClassCodeVisitorSupport.java:216)
at org.codehaus.groovy.ast.stmt.IfStatement.visit(IfStatement.java:41)
at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:35)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:176)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitBlockStatement(TypeInferencingVisitorWithRequestor.java:765)
at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:51)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:98)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:109)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitConstructorOrMethod(TypeInferencingVisitorWithRequestor.java:499)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitJDT(TypeInferencingVisitorWithRequestor.java:322)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitJDT(TypeInferencingVisitorWithRequestor.java:212)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitCompilationUnit(TypeInferencingVisitorWithRequestor.java:171)
at org.codehaus.groovy.eclipse.editor.highlighting.GatherSemanticReferences.findStaticlyUnkownReferences(GatherSemanticReferences.java:48)
at org.codehaus.groovy.eclipse.editor.highlighting.GroovySemanticReconciler.reconciled(GroovySemanticReconciler.java:286)
at org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitEditor.reconciled(CompilationUnitEditor.java:1632)
at org.eclipse.jdt.internal.ui.text.java.JavaReconcilingStrategy.reconciled(JavaReconcilingStrategy.java:212)
at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconciled(JavaCompositeReconcilingStrategy.java:161)
at org.eclipse.jdt.internal.ui.text.JavaCompositeReconcilingStrategy.reconcile(JavaCompositeReconcilingStrategy.java:110)
at org.eclipse.jface.text.reconciler.MonoReconciler.process(MonoReconciler.java:77)
at org.eclipse.jface.text.reconciler.AbstractReconciler$BackgroundThread.run(AbstractReconciler.java:206)

Issue Links

is duplicated by

Improvement - An improvement or enhancement to an existing feature or task. GRECLIPSE-1136 No type inferencing for multiple assignment

  • Minor - Minor loss of function, or other problem where easy workaround is present.
  • Resolved - A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.

Activity

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Andrew Eisenberg added a comment -

I was wondering how long it would take before someone came across this. As explained in the exception, this is not implemented yet, that is type referencing for MultipleAssignementDeclarations.

I will add code to avoid the exception, but I don't think there's much inferencing that I can do at that point.

Show
Andrew Eisenberg added a comment - I was wondering how long it would take before someone came across this. As explained in the exception, this is not implemented yet, that is type referencing for MultipleAssignementDeclarations. I will add code to avoid the exception, but I don't think there's much inferencing that I can do at that point.
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Andrew Eisenberg added a comment -

Changing the title to reflect the real problem:

Type inferencing not supported for multiple assignment declarations.

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Andrew Eisenberg added a comment - Changing the title to reflect the real problem: Type inferencing not supported for multiple assignment declarations.
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Andrew Eisenberg added a comment -

I was in this area anyway and decided to fix this once and for all.

Now, we base the LHS of this kind of assignment statement off of the inferred type of the RHS.

Eg- all of these examples will correctly infer that x and y are both integers:

def (x, Y) = [1,2]
def (x, Y) = new ArrayList<Integer>()
def (x, y) = new Integer[0]
def (z, y) = someMethodCallThatHasAListOfIntReturnType()
Show
Andrew Eisenberg added a comment - I was in this area anyway and decided to fix this once and for all. Now, we base the LHS of this kind of assignment statement off of the inferred type of the RHS. Eg- all of these examples will correctly infer that x and y are both integers: def (x, Y) = [1,2] def (x, Y) = new ArrayList< Integer >() def (x, y) = new Integer [0] def (z, y) = someMethodCallThatHasAListOfIntReturnType()

People

  • Assignee:
    Andrew Eisenberg
    Reporter:
    Graeme Rocher
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Dates

  • Created:
    Updated:
    Resolved: