private MidExp SimplifyLabelExpImpl(
MidLabelExp labelExp,
MidBreakExp breakExp,
SimplifyEnv env)
{
if (labelExp.Label == breakExp.Label)
{
return(breakExp.Value);
}
return(labelExp);
}
private EmitValHLSL EmitExpImpl(MidBreakExp exp, Span span)
{
var value = EmitVal(exp.Value, span);
Label label;
if (_labels.TryGetValue(exp.Label, out label))
{
label.Emit(value, span);
return VoidVal;
}
var topLabel = _nestedLabels.Peek();
if (topLabel is BreakLabel)
{
var breakLabel = (BreakLabel)topLabel;
if (breakLabel.MidLabel == exp.Label)
{
breakLabel.Emit(value, span);
return VoidVal;
}
}
Diagnostics.Add(
Severity.Error,
exp.Range,
"Control flow to complex for HLSL emit. Sorry.");
return new ErrorValHLSL();
}
public void PreEmitExpImpl(
MidBreakExp exp,
Span span)
{
PreEmitExp(exp.Value, span);
}
private void TransformChildrenImpl(
MidBreakExp exp)
{
exp.Value = Transform(exp.Value);
}
private MidExp SimplifyLabelExpImpl(
MidLabelExp labelExp,
MidBreakExp breakExp,
SimplifyEnv env)
{
if (labelExp.Label == breakExp.Label)
{
return breakExp.Value;
}
return labelExp;
}
private void TransformChildrenImpl(
MidBreakExp exp)
{
exp.Value = Transform(exp.Value);
}
