private void EmitGotoStatement(CodeGotoStatement Goto)
{
Depth++;
Debug("Emitting goto: " + Goto.Label);
LabelMetadata Meta = LookupLabel(Goto.Label);
Generator.Emit(OpCodes.Br, Meta.Label);
Meta.From = Goto;
Depth--;
}
private LabelMetadata LookupLabel(string Name)
{
if (!Labels.ContainsKey(Name))
{
// Create the label if it does not exist yet.
// Remember, labels can be referenced before they are declared
var Add = new LabelMetadata();
Add.Label = Generator.DefineLabel();
Add.Name = Name;
Add.Resolved = false;
Labels.Add(Name, Add);
return Add;
}
else return Labels[Name];
}
private void EmitLabeledStatement(CodeLabeledStatement Labeled)
{
Depth++;
Debug("Marking label: " + Labeled.Label);
LabelMetadata Meta = LookupLabel(Labeled.Label);
if (Meta.Resolved)
{
throw new CompileException(Labeled, "Can not mark the label " + Meta.Name + " twice");
}
Generator.MarkLabel(Meta.Label);
EmitStatement(Labeled.Statement);
Meta.Resolved = true;
Meta.Bound = Labeled.Statement;
Depth--;
}
private LabelMetadata LookupLabel(string Name)
{
if (!Labels.ContainsKey(Name))
{
// Create the label if it does not exist yet.
// Remember, labels can be referenced before they are declared
var Add = new LabelMetadata();
Add.Label = Generator.DefineLabel();
Add.Name = Name;
Add.Resolved = false;
Labels.Add(Name, Add);
return(Add);
}
else
{
return(Labels[Name]);
}
}
