string GetValue(Constant identEx)
{
if (identEx == null) return null;
if (identEx.Value != null)
return identEx.Value;
StringBuilder retVal = new StringBuilder();
if (identEx is VectorConstant)
{
VectorConstant vc = (VectorConstant) identEx;
retVal.Append(Generate(string.Format("new {0}(", vc.Type), vc));
retVal.Append(GenerateNode((SYMBOL) vc.kids[0]));
retVal.Append(Generate(", "));
retVal.Append(GenerateNode((SYMBOL) vc.kids[1]));
retVal.Append(Generate(", "));
retVal.Append(GenerateNode((SYMBOL) vc.kids[2]));
retVal.Append(Generate(")"));
return retVal.ToString();
}
if (identEx is RotationConstant)
{
RotationConstant rc = (RotationConstant) identEx;
retVal.Append(Generate(string.Format("new {0}(", rc.Type), rc));
retVal.Append(GenerateNode((SYMBOL) rc.kids[0]));
retVal.Append(Generate(", "));
retVal.Append(GenerateNode((SYMBOL) rc.kids[1]));
retVal.Append(Generate(", "));
retVal.Append(GenerateNode((SYMBOL) rc.kids[2]));
retVal.Append(Generate(", "));
retVal.Append(GenerateNode((SYMBOL) rc.kids[3]));
retVal.Append(Generate(")"));
return retVal.ToString();
}
if (identEx is ListConstant)
return GenerateListConstant((ListConstant) identEx);
return null;
}
public ConstantExpression(Parser yyp, Constant c) : base((yyp))
{
kids.Add(c);
}
/// <summary>
/// Generates the code for a Constant node.
/// </summary>
/// <param name="c">The Constant node.</param>
/// <returns>String containing C# code for Constant c.</returns>
string GenerateConstant(Constant c)
{
// Supprt LSL's weird acceptance of floats with no trailing digits
// after the period. Turn float x = 10.; into float x = 10.0;
if ("LSL_Types.LSLFloat" == c.Type)
{
int dotIndex = c.Value.IndexOf('.') + 1;
if (0 < dotIndex && (dotIndex == c.Value.Length || !char.IsDigit(c.Value[dotIndex])))
c.Value = c.Value.Insert(dotIndex, "0");
c.Value = "new LSL_Types.LSLFloat(" + c.Value + ")";
}
else if ("LSL_Types.LSLInteger" == c.Type)
{
c.Value = "new LSL_Types.LSLInteger(" + c.Value + ")";
}
else if ("LSL_Types.LSLString" == c.Type)
{
c.Value = "new LSL_Types.LSLString(\"" + c.Value + "\")";
}
return Generate(c.Value, c);
}
/// <summary>
/// Generates the node structure required to generate a default
/// initialization.
/// </summary>
/// <param name="p">
/// Tools.Parser instance to use when instantiating nodes.
/// </param>
/// <param name="constantType">String describing the datatype.</param>
/// <returns>
/// A SYMBOL node containing the appropriate structure for initializing a
/// constantType.
/// </returns>
SYMBOL GetZeroConstant(Parser p, string constantType)
{
switch (constantType)
{
case "integer":
return new Constant(p, constantType, "0");
case "float":
return new Constant(p, constantType, "0.0");
case "string":
case "key":
return new Constant(p, constantType, "");
case "list":
ArgumentList al = new ArgumentList(p);
return new ListConstant(p, al);
case "vector":
Constant vca = new Constant(p, "float", "0.0");
Constant vcb = new Constant(p, "float", "0.0");
Constant vcc = new Constant(p, "float", "0.0");
ConstantExpression vcea = new ConstantExpression(p, vca);
ConstantExpression vceb = new ConstantExpression(p, vcb);
ConstantExpression vcec = new ConstantExpression(p, vcc);
return new VectorConstant(p, vcea, vceb, vcec);
case "rotation":
Constant rca = new Constant(p, "float", "0.0");
Constant rcb = new Constant(p, "float", "0.0");
Constant rcc = new Constant(p, "float", "0.0");
Constant rcd = new Constant(p, "float", "0.0");
ConstantExpression rcea = new ConstantExpression(p, rca);
ConstantExpression rceb = new ConstantExpression(p, rcb);
ConstantExpression rcec = new ConstantExpression(p, rcc);
ConstantExpression rced = new ConstantExpression(p, rcd);
return new RotationConstant(p, rcea, rceb, rcec, rced);
default:
return null; // this will probably break stuff
}
}
