java.lang.NullPointerException

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  • java.lang.NullPointerException at org.rascalmpl.interpreter.TypeReifier.funcToProduction(TypeReifier.java:327) at org.rascalmpl.interpreter.TypeReifier.overloadedToProduction(TypeReifier.java:336) at org.rascalmpl.interpreter.result.OverloadedFunction.encodeAsConstructor(OverloadedFunction.java:77) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitExternal(StandardTextWriter.java:590) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitExternal(StandardTextWriter.java:1) at org.rascalmpl.interpreter.result.OverloadedFunction.accept(OverloadedFunction.java:493) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitTuple(StandardTextWriter.java:582) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitTuple(StandardTextWriter.java:1) at org.rascalmpl.value.impl.fast.Tuple.accept(Tuple.java:81) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitList(StandardTextWriter.java:140) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitList(StandardTextWriter.java:1) at org.rascalmpl.value.impl.fast.List.accept(List.java:104) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitMap(StandardTextWriter.java:165) at org.rascalmpl.value.io.StandardTextWriter$Writer.visitMap(StandardTextWriter.java:1) at org.rascalmpl.value.impl.AbstractMap.accept(AbstractMap.java:60) at org.rascalmpl.value.io.StandardTextWriter.write(StandardTextWriter.java:72) at org.rascalmpl.value.io.StandardTextWriter.valueToString(StandardTextWriter.java:63) at org.rascalmpl.value.impl.AbstractValue.toString(AbstractValue.java:66) at org.rascalmpl.interpreter.StringTemplateConverter$Visitor$IndentingAppend.appendToString(StringTemplateConverter.java:142) at org.rascalmpl.interpreter.StringTemplateConverter$Visitor$IndentingAppend.interpret(StringTemplateConverter.java:113) at org.rascalmpl.semantics.dynamic.Statement$NonEmptyBlock.interpret(Statement.java:759) at org.rascalmpl.semantics.dynamic.Statement$NonEmptyBlock.interpret(Statement.java:759) at org.rascalmpl.semantics.dynamic.Statement$For.interpret(Statement.java:468) at org.rascalmpl.semantics.dynamic.Literal$String.interpret(Literal.java:237) at org.rascalmpl.semantics.dynamic.Expression$Literal.interpret(Expression.java:1548) at org.rascalmpl.semantics.dynamic.Expression$CallOrTree.interpret(Expression.java:489) at org.rascalmpl.semantics.dynamic.Statement$Expression.interpret(Statement.java:365) at org.rascalmpl.interpreter.result.RascalFunction.runBody(RascalFunction.java:383) at org.rascalmpl.interpreter.result.RascalFunction.call(RascalFunction.java:322) at org.rascalmpl.semantics.dynamic.Expression$CallOrTree.interpret(Expression.java:527) at org.rascalmpl.semantics.dynamic.Declarator$Default.interpret(Declarator.java:53) at org.rascalmpl.semantics.dynamic.LocalVariableDeclaration$Default.interpret(LocalVariableDeclaration.java:36) at org.rascalmpl.semantics.dynamic.Statement$VariableDeclaration.interpret(Statement.java:1005) at org.rascalmpl.interpreter.result.RascalFunction.runBody(RascalFunction.java:383) at org.rascalmpl.interpreter.result.RascalFunction.call(RascalFunction.java:322) at org.rascalmpl.semantics.dynamic.Expression$CallOrTree.interpret(Expression.java:527) at org.rascalmpl.interpreter.utils.Cases$DefaultBlock.matchEvalAndReplace(Cases.java:295) at org.rascalmpl.interpreter.utils.Cases$DefaultBlock.matchAndEval(Cases.java:255) at org.rascalmpl.interpreter.TraversalEvaluator.applyCases(TraversalEvaluator.java:540) at org.rascalmpl.interpreter.TraversalEvaluator.traverseTop(TraversalEvaluator.java:564) at org.rascalmpl.interpreter.TraversalEvaluator.traverseOnce(TraversalEvaluator.java:191) at org.rascalmpl.interpreter.TraversalEvaluator.traverseListOnce(TraversalEvaluator.java:458) at org.rascalmpl.interpreter.TraversalEvaluator.traverseOnce(TraversalEvaluator.java:165) at org.rascalmpl.interpreter.TraversalEvaluator.traverseADTOnce(TraversalEvaluator.java:326) at org.rascalmpl.interpreter.TraversalEvaluator.traverseOnce(TraversalEvaluator.java:161) at org.rascalmpl.interpreter.TraversalEvaluator.traverseListOnce(TraversalEvaluator.java:458) at org.rascalmpl.interpreter.TraversalEvaluator.traverseOnce(TraversalEvaluator.java:165) at org.rascalmpl.interpreter.TraversalEvaluator.traverseADTOnce(TraversalEvaluator.java:326) at org.rascalmpl.interpreter.TraversalEvaluator.traverseOnce(TraversalEvaluator.java:161) at org.rascalmpl.interpreter.TraversalEvaluator.traverseListOnce(TraversalEvaluator.java:458) at org.rascalmpl.interpreter.TraversalEvaluator.traverseOnce(TraversalEvaluator.java:165) at org.rascalmpl.interpreter.TraversalEvaluator.traverseADTOnce(TraversalEvaluator.java:326) at org.rascalmpl.interpreter.TraversalEvaluator.traverseOnce(TraversalEvaluator.java:161) at org.rascalmpl.interpreter.TraversalEvaluator.traverse(TraversalEvaluator.java:120) at org.rascalmpl.semantics.dynamic.Visit$GivenStrategy.interpret(Visit.java:132) at org.rascalmpl.semantics.dynamic.Statement$Visit.interpret(Statement.java:1024) at org.rascalmpl.semantics.dynamic.Statement$Assignment.interpret(Statement.java:205) at org.rascalmpl.semantics.dynamic.Statement$NonEmptyBlock.interpret(Statement.java:759) at org.rascalmpl.semantics.dynamic.Statement$Solve.interpret(Statement.java:861) at org.rascalmpl.interpreter.result.RascalFunction.runBody(RascalFunction.java:383) at org.rascalmpl.interpreter.result.RascalFunction.call(RascalFunction.java:322) at org.rascalmpl.semantics.dynamic.Expression$CallOrTree.interpret(Expression.java:527) at org.rascalmpl.semantics.dynamic.Statement$Expression.interpret(Statement.java:365) at org.rascalmpl.semantics.dynamic.Statement$Assignment.interpret(Statement.java:205) at org.rascalmpl.interpreter.result.RascalFunction.runBody(RascalFunction.java:383) at org.rascalmpl.interpreter.result.RascalFunction.call(RascalFunction.java:292) at org.rascalmpl.semantics.dynamic.Expression$CallOrTree.interpret(Expression.java:527) at org.rascalmpl.semantics.dynamic.Command$Expression.interpret(Command.java:61) at org.rascalmpl.interpreter.Evaluator.eval(Evaluator.java:1090) at org.rascalmpl.interpreter.Evaluator.eval(Evaluator.java:959) at org.rascalmpl.interpreter.Evaluator.eval(Evaluator.java:914) at org.rascalmpl.repl.RascalInterpreterREPL.evalStatement(RascalInterpreterREPL.java:114) at org.rascalmpl.eclipse.repl.RascalTerminalConnector$1$1.evalStatement(RascalTerminalConnector.java:189) at org.rascalmpl.repl.BaseRascalREPL.handleInput(BaseRascalREPL.java:97) at org.rascalmpl.repl.BaseREPL.run(BaseREPL.java:278) at org.rascalmpl.eclipse.repl.RascalTerminalConnector$1.run(RascalTerminalConnector.java:238)
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