public override DynValue Visit(PostIncrementationNode postIncrementationNode)
{
DynValue retVal = null;
var name = postIncrementationNode.Variable.Name;
if (CallStack.Count > 0)
{
var stackTop = CallStack.Peek();
if (stackTop.ParameterScope.ContainsKey(name))
{
retVal = stackTop.ParameterScope[name].Copy();
stackTop.ParameterScope[name] = new DynValue(retVal.Number + 1);
}
else if (stackTop.LocalVariableScope.ContainsKey(name))
{
retVal = stackTop.LocalVariableScope[name].Copy();
stackTop.LocalVariableScope[name] = new DynValue(retVal.Number + 1);
}
else if (Environment.Globals.ContainsKey(name))
{
retVal = Environment.Globals[name].Copy();
Environment.Globals[name] = new DynValue(retVal.Number + 1);
}
else
{
throw new RuntimeException($"The referenced variable '{name}' was never defined.",
postIncrementationNode.Line);
}
}
else
{
if (!Environment.Globals.ContainsKey(name))
{
throw new RuntimeException($"The referenced variable '{name}' was never defined.",
postIncrementationNode.Line);
}
retVal = Environment.Globals[name].Copy();
Environment.Globals[name] = new DynValue(retVal.Number + 1);
}
Debug.Assert(retVal != null, "PostIncrementation -- internal interpreter failure: retVal == null?!");
return(retVal);
}
public abstract DynValue Visit(PostIncrementationNode postIncrementationNode);
