public static bool Run(Pass parent, string operatorName, Expression e, ExpressionUsage u)
{
var p = new NoLocalAccessOrLValueValidator(parent, operatorName);
p.VisitNullable(ref e, u);
return(!p.HasError);
}
public override void Begin(ref Expression e, ExpressionUsage u)
{
switch (e.ExpressionType)
{
case ExpressionType.Base:
case ExpressionType.This:
case ExpressionType.GetMetaObject:
case ExpressionType.GetMetaProperty:
case ExpressionType.CapturedArgument:
case ExpressionType.CapturedLocal:
{
var s = Generator.ProcessValue(e);
if (Expressions.IsVariableOrGlobal(s.Value))
{
e = s.Value;
SetMinStage(e.Source, s.MinStage);
SetMaxStage(e.Source, s.MaxStage);
}
else
{
e = AddArgument(e.Source, s);
}
}
break;
case ExpressionType.NewVertexAttrib:
case ExpressionType.NewPixelSampler:
{
if (!NoLocalAccessOrLValueValidator.Run(this, e.ExpressionType == ExpressionType.NewVertexAttrib ? "vertex_attrib" : "pixel_sampler", e, u))
{
e = Expression.Invalid;
break;
}
var s = Generator.ProcessValue(e);
SetMinStage(e.Source, s.MinStage);
SetMaxStage(e.Source, s.MaxStage);
e = s.Value;
}
break;
case ExpressionType.Swizzle:
OnObject(ref e, ref (e as Swizzle).Object);
break;
case ExpressionType.LoadField:
OnObject(ref e, ref (e as LoadField).Object);
break;
case ExpressionType.GetProperty:
OnObject(ref e, ref (e as GetProperty).Object);
break;
case ExpressionType.CallMethod:
OnObject(ref e, ref (e as CallMethod).Object);
break;
}
}
