public void ExecuteForEachCommand()
{
IExpression addToX = new ArithmeticBinaryExpression(ArithmeticOperator.Add, new VariableExpression("b"), new VariableExpression("a"));
ICommand setX = new SetVariableCommand("a", addToX);
IExpression values = new ConstantExpression(new int [] { 1, 2, 3 } );
ForEachCommand foreachcmd = new ForEachCommand("b", values, setX);
Context context = new Context();
context.SetValue("a", 0);
foreachcmd.Execute(context);
Assert.AreEqual(6, context.GetValue("a"));
}
private ICommand ParseForInCommand()
{
string name = this.ParseName();
bool isvar = false;
if (name == "var")
{
name = this.ParseName();
isvar = true;
}
this.Parse(TokenType.Name, "in");
IExpression values = this.ParseExpression();
this.Parse(TokenType.Separator, ")");
ICommand command = this.ParseCommand();
ICommand forcmd = new ForEachCommand(name, values, command);
if (!isvar)
return forcmd;
// TODO review if var command should be hoisted
ICommand cmds = new CompositeCommand(new List<ICommand>() { new VarCommand(name), forcmd });
return cmds;
}
