Node Sequence()
{
var node = new Node(Operation.Sequence, cs.Accept("+"));
node.Add(Exclusion());
while (cs.Accept(".."))
{
node.Add(Exclusion());
}
return(node);
}
/*-----------------------------------------------------------------------------------------------
*
* Recursive Descent Parser Stuff :
*
* -----------------------------------------------------------------------------------------------*/
/// <summary>
///
/// </summary>
Node Expression(out Target target)
{
target = Target.None;
if (cs.Accept("$pixel"))
{
target = Target.PixelShader;
}
if (cs.Accept("$vertex"))
{
target = Target.VertexShader;
}
if (cs.Accept("$geometry"))
{
target = Target.GeometryShader;
}
if (cs.Accept("$domain"))
{
target = Target.DomainShader;
}
if (cs.Accept("$hull"))
{
target = Target.HullShader;
}
if (cs.Accept("$compute"))
{
target = Target.ComputeShader;
}
if (target != Target.None)
{
if (cs.AcceptSpace())
{
return(Combination());
}
else
{
return(new Node(""));
}
}
else
{
throw new BuildException("Bad shader type");
}
}