public object Evaluate(INode node, IEvaluator pv)
{
if (node.JjtGetNumChildren() != 2)
{
throw new EvaluationException("Assignment operator must have 2 operators.");
}
object obj2 = pv.Eval(node.JjtGetChild(1));
INode node2 = node.JjtGetChild(0);
if (node2 is ASTVarNode)
{
ASTVarNode node3 = (ASTVarNode)node2;
if (!node3.Var.SetValue(obj2))
{
throw new EvaluationException("Attempt to set the value of a constant variable");
}
return(obj2);
}
if (!(node2 is ASTFunNode) || !(((ASTFunNode)node2).GetPFMC() is ILValue))
{
throw new EvaluationException("Assignment should have a variable or LValue for the lhs.");
}
((ILValue)((ASTFunNode)node2).GetPFMC()).Set(pv, node2, obj2);
return(obj2);
}
public object Visit(ASTVarNode node, object data)
{
Variable var = node.Var;
if (var == null)
{
throw new EvaluationException("var was null in StandardEvaluator");
}
object item = var.Value;
if (this._trapNullValues && (item == null))
{
throw new EvaluationException("Could not evaluate " + node.GetName() + ": no value set for the variable.");
}
if (this._trapNaN && (((item is double) && double.IsNaN((double)item)) || ((item is float) && float.IsNaN((float)item))))
{
throw new EvaluationException("NaN value detected for variable " + node.GetName());
}
if (this._trapInfinity && (((item is double) && double.IsInfinity((double)item)) || ((item is float) && float.IsInfinity((float)item))))
{
throw new EvaluationException("Infinite value " + item.ToString() + "detected for variable " + node.GetName());
}
this.stack.Push(item);
return(data);
}
public ASTVarNode BuildVariableNode(string name)
{
ASTVarNode node = new ASTVarNode(JJTVARNODE);
Variable var = this.vt.AddVariable(name);
node.Var = var;
return(this.BuildVariableNode(var));
}
protected double VisitVariable(ASTVarNode node)
{
object o = node.Var.Value;
if (o == null)
{
throw new EvaluationException("Variable " + node.GetName() + " has a null value");
}
return(FromObject(o));
}
public void Set(IEvaluator pv, INode node, object value)
{
INode node2 = node.JjtGetChild(0);
if (!(node2 is ASTVarNode))
{
throw new EvaluationException("Ele: lhs must be a variable");
}
ASTVarNode node3 = (ASTVarNode)node2;
Variable var = node3.Var;
if (node.JjtGetNumChildren() == 2)
{
object obj2 = pv.Eval(node.JjtGetChild(1));
int num = -1;
if (obj2 is JepDouble)
{
num = ((JepDouble)obj2).IntValue - 1;
}
else
{
if (!(obj2 is ArrayList))
{
throw new EvaluationException("Ele: rhs must be a number");
}
ArrayList list = (ArrayList)obj2;
if (list.Count != 1)
{
throw new EvaluationException("Ele: only single dimension arrays supported in JEP");
}
num = ((JepDouble)list[0]).IntValue - this.indexShift;
}
object obj3 = var.Value;
if (!(obj3 is ArrayList))
{
throw new EvaluationException("Ele: the value of the variable must be a Vector");
}
ArrayList list2 = new ArrayList((ArrayList)obj3);
list2[num] = value;
var.SetValue(list2);
}
else
{
int[] indicies = new int[node.JjtGetNumChildren() - 1];
for (int i = 0; i < indicies.Length; i++)
{
object obj4 = pv.Eval(node.JjtGetChild(i + 1));
if (!(obj4 is JepDouble))
{
throw new EvaluationException("Ele: index should be integers, it is " + obj4);
}
indicies[i] = ((JepDouble)obj4).IntValue - this.indexShift;
}
object o = var.Value;
if (!(o is ArrayList))
{
throw new EvaluationException("Ele: the value of the variable must be a ArrayList");
}
object obj6 = this.SetEle(o, indicies, 0, value);
var.SetValue(obj6);
}
}
public virtual object Visit(ASTVarNode node, object data)
{
this.sb.Append(node.GetName());
return(data);
}
public ASTVarNode BuildVariableNode(ASTVarNode node)
{
return(this.BuildVariableNode(node.Var));
}
