private static ProductionRule CheckNonZeroValue(OneMaxGO go)
{
string value = go.ConvertToCode(new ProductionRule((NonTerminal)"value"));
Tuple <int, bool> parsingResult = EvaluateExpression(value, go);
int calculatedValue = parsingResult.Item1;
bool canExecute = parsingResult.Item2;
go.ConvertToCode(new ErrorCheck <OneMaxGO>(g => !canExecute || calculatedValue != 0));
return(new ProductionRule(new Terminal(value)));
}
private static ProductionRule CreateForLoop(OneMaxGO go)
{
if (go["unusedVariables"].Count == 0)
{
return(new ProductionRule((NonTerminal)"loop"));
}
string chosenVariable = go.ConvertToCode(new ProductionRule((NonTerminal)"unusedVariables"));
OneMaxGO newGO = go.CreateChild <OneMaxGO>();
ProductionRule variableProductionRule = newGO["unusedVariables"].Find(x => ((Terminal)x[0]).Code == chosenVariable);
newGO["unusedVariables"].Remove(variableProductionRule);
newGO["variable"].Add(variableProductionRule);
return(new ProductionRule(new Terminal("for(int " + chosenVariable + " = 0; " + chosenVariable + " < "), (NonTerminal)"value", new Terminal("; " + chosenVariable + "++)\n{\n"), new NonTerminal("code", g => newGO), (Terminal)"\n}\n"));
}
private static ProductionRule CheckIfAlwaysTrue(OneMaxGO go)
{
string code = go.ConvertToCode((NonTerminal)"condition");
bool canExecute = !code.Contains("a") && !code.Contains("b") && !code.Contains("c") && !code.Contains("d") && !code.Contains("e") && !code.Contains("f");
ExecutionParameters parameters = new ExecutionParameters(genericCodeWrapper.Replace("TYPE", "bool"), "CodeExecutor.Executor", "Execute");
if (canExecute)
{
bool result = (bool)Executor.Execute(parameters, "return !" + code + ";");
go.ConvertToCode(new ErrorCheck(g => result));
return(new ProductionRule(new Terminal(code)));
//If the value is always false, there can't be an infine loop (although a loop that is never executed is useless)
}
else//If the code contains variables, by definition its value isn't constant
{
return(new ProductionRule(new Terminal(code)));
}
}
public override GrammaticalObject GetClone()
{
OneMaxGO go = new OneMaxGO();
return(go);
}
