001 package railo.transformer.cfml.evaluator.func.impl; 002 003 import railo.runtime.exp.TemplateException; 004 import railo.transformer.bytecode.expression.ExprString; 005 import railo.transformer.bytecode.expression.Expression; 006 import railo.transformer.bytecode.expression.var.Argument; 007 import railo.transformer.bytecode.expression.var.BIF; 008 import railo.transformer.bytecode.expression.var.Variable; 009 import railo.transformer.bytecode.expression.var.VariableString; 010 import railo.transformer.cfml.evaluator.FunctionEvaluator; 011 import railo.transformer.library.function.FunctionLibFunction; 012 013 public class IsNull implements FunctionEvaluator{ 014 015 public void evaluate(BIF bif, FunctionLibFunction flf) throws TemplateException { 016 Argument arg = bif.getArguments()[0]; 017 Expression value = arg.getValue(); 018 if(value instanceof Variable){ 019 try{ 020 ExprString exprStr=VariableString.translateVariableToExprString(value,false); 021 arg.setValue(exprStr,String.class.getName()); 022 } 023 catch(Throwable t){ 024 025 } 026 } 027 } 028 029 }