Consider the following:
class C {
private <N extends Number> N m(Class<N> t) {
t.newInstance()
}
void test() {
def n = m()
}
}No class is supplied in the call "m()" and so no type witness exists for "N".
java.lang.AssertionError
at org.eclipse.jdt.groovy.search.GenericsMapper.gatherGenerics(GenericsMapper.java:94)
at org.eclipse.jdt.groovy.search.GenericsMapper.gatherGenerics(GenericsMapper.java:54)
at org.eclipse.jdt.groovy.search.TypeLookupResult.resolveTypeParameterization(TypeLookupResult.java:268)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.lookupExpressionType(TypeInferencingVisitorWithRequestor.java:2759)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.handleSimpleExpression(TypeInferencingVisitorWithRequestor.java:2035)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.handleSimpleExpression(TypeInferencingVisitorWithRequestor.java:2040)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitConstantExpression(TypeInferencingVisitorWithRequestor.java:1004)
at org.codehaus.groovy.ast.expr.ConstantExpression.visit(ConstantExpression.java:88)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitMethodCallExpression(TypeInferencingVisitorWithRequestor.java:1497)
at org.codehaus.groovy.ast.expr.MethodCallExpression.visit(MethodCallExpression.java:78)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitBinaryExpression(TypeInferencingVisitorWithRequestor.java:782)
at org.codehaus.groovy.ast.CodeVisitorSupport.visitDeclarationExpression(CodeVisitorSupport.java:335)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitDeclarationExpression(ClassCodeVisitorSupport.java:177)
at org.codehaus.groovy.ast.expr.DeclarationExpression.visit(DeclarationExpression.java:89)
at org.codehaus.groovy.ast.CodeVisitorSupport.visitExpressionStatement(CodeVisitorSupport.java:117)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitExpressionStatement(ClassCodeVisitorSupport.java:252)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitExpressionStatement(TypeInferencingVisitorWithRequestor.java:1141)
at org.codehaus.groovy.ast.stmt.ExpressionStatement.visit(ExpressionStatement.java:41)
at org.codehaus.groovy.ast.CodeVisitorSupport.visitBlockStatement(CodeVisitorSupport.java:86)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitBlockStatement(ClassCodeVisitorSupport.java:216)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitBlockStatement(TypeInferencingVisitorWithRequestor.java:870)
at org.codehaus.groovy.ast.stmt.BlockStatement.visit(BlockStatement.java:70)
at org.codehaus.groovy.ast.ClassCodeVisitorSupport.visitClassCodeContainer(ClassCodeVisitorSupport.java:165)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitConstructorOrMethod(TypeInferencingVisitorWithRequestor.java:1111)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitMethodInternal(TypeInferencingVisitorWithRequestor.java:658)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitJDT(TypeInferencingVisitorWithRequestor.java:466)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitJDT(TypeInferencingVisitorWithRequestor.java:375)
at org.eclipse.jdt.groovy.search.TypeInferencingVisitorWithRequestor.visitCompilationUnit(TypeInferencingVisitorWithRequestor.java:255)
at org.codehaus.groovy.eclipse.editor.highlighting.GatherSemanticReferences.findSemanticHighlightingReferences(GatherSemanticReferences.java:43)
Consider the following:
No class is supplied in the call "m()" and so no type witness exists for "N".