public IEmitVal EmitAttributeRef(
MidAttributeDecl decl,
IEmitBlock block,
EmitEnv env)
{
if (env.ContainsKey(decl))
{
return(env.Lookup(decl, block));
}
IEmitVal attributeVal = null;
if (decl.Exp != null)
{
attributeVal = block.Temp(
decl.Name.ToString(),
EmitExp(decl.Exp, block, env));
}
else
{
// \todo: This is a *huge* hack,
// since we use @Constant attributes
// to make various D3D constants visible... :(
attributeVal = block.BuiltinApp(
EmitType(decl.Type, env),
decl.Name.ToString(),
null);
}
env.Insert(decl, (b) => attributeVal);
return(attributeVal);
}
private IEmitVal EmitExpImpl(
MidBuiltinApp app,
IEmitBlock block,
EmitEnv env)
{
var template = app.Decl.GetTemplate(Target.TargetName);
if (template == null)
{
Diagnostics.Add(
Severity.Error,
new SourceRange(),
"No builtin function implementation defined for \"{0}\" for target \"{1}\"",
app.Decl.Name,
Target.TargetName);
return(block.Local("error", EmitType(app.Type, env)));
}
var args = (from a in app.Args
select EmitExp(a, block, env)).ToArray();
return(block.BuiltinApp(
EmitType(app.Type, env),
template,
args));
}
