public static StandardFunction FromContext(SSLParser.StandardFunctionContext ctx, SSLVisitor vis)
{
var rtype = ReflectionUtils.TranslateTypeContext(ctx.type());
var fname = ctx.Name.Text;
List <Param> pars = new List <Param>();
if (ctx.Params != null)
{
foreach (var pctx in ctx.Params._PList)
{
var pname = pctx.Name.Text;
var aidx = pctx.Access?.Type ?? SSLParser.KW_IN;
var acs = (aidx == SSLParser.KW_OUT) ? Access.Out : (aidx == SSLParser.KW_INOUT) ? Access.InOut : Access.In;
var ptype = ReflectionUtils.TranslateTypeContext(pctx.type());
if (ptype == ShaderType.Void)
{
vis.Error(ctx, $"The parameter '{pname}' cannot have type 'void'.");
}
var fidx = pars.FindIndex(ep => ep.Name == pname);
if (fidx != -1)
{
vis.Error(ctx, $"Duplicate parameter name '{pname}' in the function parameter list.");
}
pars.Add(new Param {
Name = pname, Type = ptype.Value, Access = acs
});
}
}
return(new StandardFunction(fname, rtype.Value, pars.ToArray()));
}
public StandardFunction AddFunction(SSLParser.StandardFunctionContext ctx, SSLVisitor vis)
{
var func = StandardFunction.FromContext(ctx, vis);
var pre = FindFunction(func.Name);
if (pre != null)
{
vis.Error(ctx, $"A function with the name '{func.Name}' already exists in the shader.");
}
_functions.Add(func.Name, func);
return(func);
}
