protected virtual AstNode _Optimize(AstNodeExprCast Cast)
{
//Console.WriteLine("Optimize.AstNodeExprCast: {0} : {1}", Cast.CastedType, Cast.Expr);
// Dummy cast
if (Cast.CastedType == Cast.Expr.Type)
{
//Console.WriteLine("Dummy Cast");
return(Cast.Expr);
}
// Double Cast
else if (Cast.Expr is AstNodeExprCast)
{
//Console.WriteLine("Double Cast");
var FirstCastType = (Cast.Expr as AstNodeExprCast).CastedType;
var SecondCastType = Cast.CastedType;
if (FirstCastType.IsPrimitive && SecondCastType.IsPrimitive)
{
if (AstUtils.GetTypeSize(FirstCastType) >= AstUtils.GetTypeSize(SecondCastType))
{
return(Optimize(new AstNodeExprCast(Cast.CastedType, (Cast.Expr as AstNodeExprCast).Expr)));
}
}
}
// Cast to immediate
else if (Cast.Expr is AstNodeExprImm)
{
//Console.WriteLine("Cast to immediate");
return(new AstNodeExprImm(AstUtils.CastType((Cast.Expr as AstNodeExprImm).Value, Cast.CastedType)));
}
return(Cast);
}
protected virtual void _Generate(AstNodeExprCast cast)
{
var castedType = cast.CastedType;
Generate(cast.Expr);
if (cast.Explicit)
{
_GenerateCastToType(castedType);
}
}
protected virtual void _Generate(AstNodeExprCast cast)
{
if (cast.Explicit)
{
Output.Write("(");
Output.Write("(" + cast.CastedType.Name + ")");
Generate(cast.Expr);
Output.Write(")");
}
else
{
Generate(cast.Expr);
}
}
protected virtual AstNode _Optimize(AstNodeExprCast cast)
{
//Console.WriteLine("Optimize.AstNodeExprCast: {0} : {1}", Cast.CastedType, Cast.Expr);
// Dummy cast
if (cast.CastedType == cast.Expr.Type)
{
//Console.WriteLine("Dummy Cast");
return(cast.Expr);
}
// Double Cast
var expr = cast.Expr as AstNodeExprCast;
if (expr != null)
{
//Console.WriteLine("Double Cast");
var firstCastType = expr.CastedType;
var secondCastType = cast.CastedType;
if (firstCastType.IsPrimitive && secondCastType.IsPrimitive)
{
if (AstUtils.GetTypeSize(firstCastType) >= AstUtils.GetTypeSize(secondCastType))
{
return(Optimize(new AstNodeExprCast(cast.CastedType, expr.Expr)));
}
}
return(cast);
}
// Cast to immediate
var imm = cast.Expr as AstNodeExprImm;
if (imm != null)
{
//Console.WriteLine("Cast to immediate");
return(new AstNodeExprImm(AstUtils.CastType(imm.Value, cast.CastedType)));
}
return(cast);
}