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  1. Groovy
  2. GROOVY-6670

Cannot coerce closure to SAM type when calling method of generic type

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: Major
    • Resolution: Fixed
    • Affects Version/s: 2.3.0-beta-1
    • Fix Version/s: 2.3.0-beta-2
    • Component/s: None
    • Labels:
      None

      Description

      Sorry for the vague summary. The following doesn't compile…

      import groovy.transform.CompileStatic
      
      interface Transform<T> {
        T transform(T input)
      }
      
      class Holder<T> {
        final T thing
      
        Holder(T thing) {
          this.thing = thing
        }
      
        T transform(Transform<T> transform) {
          transform.transform(thing)
        }
      }
      
      @CompileStatic
      class Container {
        static void m() {
          def holder = new Holder<Integer>(2)
          def transformed = holder.transform {
            it * 2
          }
          assert transformed == 4
        }
      }
      

      The problem seems to be the holder.transform() call. This code works without @CompileStatic.

      In GroovyConsole I get:

      java.lang.InstantiationException: Transform
      

      In IDEA 13.1.1 I get:

      Error:Groovyc: A groovyc error occurred while trying to load one of the classes in project dependencies, please ensure it's present. See the message and the stack trace below for reference
      java.lang.ClassCircularityError: Transform
      	at java.lang.Class.forName0(Native Method)
      	at java.lang.Class.forName(Class.java:270)
      	at groovy.transform.stc.ClosureSignatureHint.findClassNode(ClosureSignatureHint.java:133)
      	at groovy.transform.stc.FromAbstractTypeMethods.getClosureSignatures(FromAbstractTypeMethods.java:41)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.doInferClosureParameterTypes(StaticTypeCheckingVisitor.java:2012)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.inferClosureParameterTypes(StaticTypeCheckingVisitor.java:2000)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallArguments(StaticTypeCheckingVisitor.java:1965)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallExpression(StaticTypeCheckingVisitor.java:2501)
      	at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethodCallExpression(StaticCompilationVisitor.java:245)
      	at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:64)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitBinaryExpression(StaticTypeCheckingVisitor.java:432)
      	at org.codehaus.groovy.ast.CodeVisitorSupport.visitDeclarationExpression(CodeVisitorSupport.java:245)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitDeclarationExpression(ClassCodeVisitorSupport.java:107)
      	at org.codehaus.groovy.ast.expr.DeclarationExpression.visit(DeclarationExpression.java:86)
      	at org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:69)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:193)
      	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:163)
      	at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:69)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:101)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:112)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitConstructorOrMethod(StaticTypeCheckingVisitor.java:1501)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:123)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.startMethodInference(StaticTypeCheckingVisitor.java:1789)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethod(StaticTypeCheckingVisitor.java:1762)
      	at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethod(StaticCompilationVisitor.java:144)
      	at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1063)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:50)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitClass(StaticTypeCheckingVisitor.java:173)
      	at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitClass(StaticCompilationVisitor.java:110)
      	at org.codehaus.groovy.transform.sc.StaticCompileTransformation.visit(StaticCompileTransformation.java:61)
      	at org.codehaus.groovy.transform.ASTTransformationVisitor.visitClass(ASTTransformationVisitor.java:132)
      	at org.codehaus.groovy.transform.ASTTransformationVisitor$2.call(ASTTransformationVisitor.java:176)
      	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1047)
      	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:583)
      	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:561)
      	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:538)
      	at groovy.lang.GroovyClassLoader.doParseClass(GroovyClassLoader.java:286)
      	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:259)
      	at groovy.lang.GroovyClassLoader.parseClass(GroovyClassLoader.java:245)
      	at groovy.lang.GroovyClassLoader.recompile(GroovyClassLoader.java:739)
      	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:696)
      	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:765)
      	at groovy.lang.GroovyClassLoader.loadClass(GroovyClassLoader.java:753)
      	at java.lang.Class.forName0(Native Method)
      	at java.lang.Class.forName(Class.java:270)
      	at groovy.transform.stc.ClosureSignatureHint.findClassNode(ClosureSignatureHint.java:133)
      	at groovy.transform.stc.FromAbstractTypeMethods.getClosureSignatures(FromAbstractTypeMethods.java:41)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.doInferClosureParameterTypes(StaticTypeCheckingVisitor.java:2012)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.inferClosureParameterTypes(StaticTypeCheckingVisitor.java:2000)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallArguments(StaticTypeCheckingVisitor.java:1965)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethodCallExpression(StaticTypeCheckingVisitor.java:2501)
      	at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethodCallExpression(StaticCompilationVisitor.java:245)
      	at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:64)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitBinaryExpression(StaticTypeCheckingVisitor.java:432)
      	at org.codehaus.groovy.ast.CodeVisitorSupport.visitDeclarationExpression(CodeVisitorSupport.java:245)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitDeclarationExpression(ClassCodeVisitorSupport.java:107)
      	at org.codehaus.groovy.ast.expr.DeclarationExpression.visit(DeclarationExpression.java:86)
      	at org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:69)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:193)
      	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:163)
      	at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:69)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:101)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitConstructorOrMethod(ClassCodeVisitorSupport.java:112)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitConstructorOrMethod(StaticTypeCheckingVisitor.java:1501)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitMethod(ClassCodeVisitorSupport.java:123)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.startMethodInference(StaticTypeCheckingVisitor.java:1789)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitMethod(StaticTypeCheckingVisitor.java:1762)
      	at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitMethod(StaticCompilationVisitor.java:144)
      	at org.codehaus.groovy.ast.ClassNode.visitContents(ClassNode.java:1063)
      	at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClass(ClassCodeVisitorSupport.java:50)
      	at org.codehaus.groovy.transform.stc.StaticTypeCheckingVisitor.visitClass(StaticTypeCheckingVisitor.java:173)
      	at org.codehaus.groovy.transform.sc.StaticCompilationVisitor.visitClass(StaticCompilationVisitor.java:110)
      	at org.codehaus.groovy.transform.sc.StaticCompileTransformation.visit(StaticCompileTransformation.java:61)
      	at org.codehaus.groovy.transform.ASTTransformationVisitor.visitClass(ASTTransformationVisitor.java:132)
      	at org.codehaus.groovy.transform.ASTTransformationVisitor$2.call(ASTTransformationVisitor.java:176)
      	at org.codehaus.groovy.control.CompilationUnit.applyToPrimaryClassNodes(CompilationUnit.java:1047)
      	at org.codehaus.groovy.control.CompilationUnit.doPhaseOperation(CompilationUnit.java:583)
      	at org.codehaus.groovy.control.CompilationUnit.processPhaseOperations(CompilationUnit.java:561)
      	at org.codehaus.groovy.control.CompilationUnit.compile(CompilationUnit.java:538)
      	at org.jetbrains.groovy.compiler.rt.GroovyCompilerWrapper.compile(GroovyCompilerWrapper.java:54)
      	at org.jetbrains.groovy.compiler.rt.DependentGroovycRunner.runGroovyc(DependentGroovycRunner.java:81)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:606)
      	at org.jetbrains.groovy.compiler.rt.GroovycRunner.main(GroovycRunner.java:100)
      	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      	at java.lang.reflect.Method.invoke(Method.java:606)
      	at com.intellij.rt.execution.CommandLineWrapper.main(CommandLineWrapper.java:121)
      

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            • Assignee:
              melix Cédric Champeau
              Reporter:
              ldaley Luke Daley
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              • Created:
                Updated:
                Resolved: