public MidVal Lookup(MidVarRef varRef)
{
MidVal val;
if (_vars.TryGetValue(varRef.Var, out val))
{
return(val);
}
if (_parent != null)
{
return(_parent.Lookup(varRef));
}
return(varRef);
}
private MidExp SimplifyExpImpl(MidVarRef val, SimplifyEnv env)
{
return(env.Lookup(val));
}
private static void DumpExpImpl(
MidVarRef varRef,
Span span)
{
span.Write("{0}", varRef.Var.Name);
}
private EmitValHLSL EmitValImpl(MidVarRef varRef, Span span)
{
EmitValHLSL val;
if (_varVals.TryGetValue(varRef.Var, out val))
return val;
Diagnostics.Add(
Severity.Error,
new SourceRange(),
"Can't find value for variable '{0}' during HLSL emit", varRef.Var.Name);
return new ErrorValHLSL();
}
public MidVal Lookup(MidVarRef varRef)
{
MidVal val;
if (_vars.TryGetValue(varRef.Var, out val))
return val;
if (_parent != null)
return _parent.Lookup(varRef);
return varRef;
}
private MidExp SimplifyExpImpl(MidVarRef val, SimplifyEnv env)
{
return env.Lookup(val);
}