public override DynValue Visit(IncrementationNode incrementationNode)
{
if (!(incrementationNode.Target is VariableNode) && !(incrementationNode.Target is IndexingNode))
{
throw new RuntimeException(
"A variable value is required as increment operand", incrementationNode.Line
);
}
var numValue = Visit(incrementationNode.Target);
if (numValue.Type != DynValueType.Number)
{
throw new RuntimeException(
"Cannot increment this value because it's not a number.", incrementationNode.Line
);
}
if (incrementationNode.IsPrefix)
{
var retVal = new DynValue(numValue.Number + 1);
numValue.CopyFrom(retVal);
return(retVal);
}
else
{
var retVal = numValue.Copy();
numValue.CopyFrom(new DynValue(numValue.Number + 1));
return(retVal);
}
}
public abstract DynValue Visit(IncrementationNode incrementationNode);
