public override object Evaluate(MyContext context)
{
MyFunctionDecleration func = context.GetFunctionRVD(Name);
MyContext ctx = new MyContext();
ctx.functionsRVD = context.functionsRVD;
for (int i = 0; i < func.Params.Count ; i++)
{
IConvertible value = (IConvertible) Args[i].Evaluate(context);
string param = func.Params[i];
ctx.AddVariable(param, value);
if (i < func.Params.Count - 1)
{
context.AddLog(", ");
}
//Debug.WriteLine(Name + "," + param + "=" + value);
context.AddLog(value.ToString());
}
object o = func.Statements.Evaluate(ctx);
object returnValue = ctx.returnValue;
ctx.returned = false;
//Debug.WriteLine(Name + ".returnValue =" + returnValue);
context.AddLog(ctx.sb.ToString());
return returnValue;
}
public override object DoStatement(MyContext context)
{
context.AddLog("if cond: ");
bool cond = (bool)Condition.Evaluate(context);
context.AddLog(Environment.NewLine);
object o = null;
if (cond)
{
context.AddLog("then: ");
o = ThenPart.Evaluate(context);
context.AddLog(Environment.NewLine);
}
else
{
if (ElsePart != null)
{
context.AddLog("else: ");
o = ElsePart.Evaluate(context);
context.AddLog(Environment.NewLine);
}
else
{
context.AddLog("nothing: ");
context.AddLog("end-if");
}
}
return o;
}
public override object Evaluate(MyContext context)
{
context.AddLog(" ( ");
context.AddLog(Symbol + " ");
IConvertible left = (IConvertible)Left.Evaluate(context);
IConvertible right = (IConvertible)Right.Evaluate(context);
context.AddLog(" ) ");
IConvertible result = DoBinOp(left, right);
return result;
}
public override object Evaluate(MyContext context)
{
context.AddLog("declaring program: " + Name);
context.AddLog(Environment.NewLine);
MyContext ctx = new MyContext();
List(ctx);
context.AddLog(ctx.ListLog.ToString());
context.AddLog(Environment.NewLine);
context.AddProgram(Name, this);
return 0;
}
public override object Evaluate(MyContext context)
{
IConvertible value = (IConvertible) context.GetVariable(Name);
context.AddLog(" $" + Name + "[" + value + "] ");
return value;
}
public override object DoStatement(MyContext context)
{
context.AddLog("returning: ");
object o = ReturnExpression.Evaluate(context);
context.returnValue = o;
context.returned = true;
//Debug.WriteLine("returning: " + o);
return o;
}
public override object DoStatement(MyContext context)
{
object o = 0;
foreach (var statementNode in statements)
{
o = statementNode.Evaluate(context);
context.AddLog(Environment.NewLine);
if (context.returned)
{
return o;
}
}
return o;
}
public override object DoStatement(MyContext context)
{
context.AddLog(VariableNode.Name + " := ");
IConvertible value = (IConvertible)ValueNode.Evaluate(context);
if (!context.ContainsVariable(VariableNode.Name))
{
context.AddVariable(VariableNode.Name, value);
}
else
{
context.SetVariable(VariableNode.Name, value);
}
return value;
}
public override object Evaluate(MyContext context)
{
context.AddLog(Value.ToString() + " ");
return Value;
}