/// <summary>
/// These label addresses aren't guaranteed correct until the final pass of the compiler
/// </summary>
public int GetLabelAddressBestEffort(TerminalName targetName)
{
var result = labelNameToAddress[targetName];
if (result == null)
{
labelsHaveChanged = true;
return(0);
}
return((int)result);
}
/// <summary>
/// Mark the point in the generated code which is this label's target
/// </summary>
public void MarkLabel(TerminalName name)
{
var currentAddress = emitter.CurrentAddress;
var previousAddress = labelNameToAddress[name];
if (previousAddress != null && (int)previousAddress != currentAddress)
{
labelsHaveChanged = true;
}
labelNameToAddress[name] = currentAddress;
Debug.Print(name + ":");
}
protected VariableInfo(TerminalName name, Representation representation)
{
this.Name = name;
this.Representation = representation;
}
public StaticVariableInfo(TerminalName name, Static representation) : base(name, representation)
{
}
public Label(TerminalName name)
{
this.Name=name;
}
public LocalVariableInfo(TerminalName name, Representation representation) : base(name, representation)
{
}
public Representation AllocateRepresentation(TerminalName variableName)
{
return((Representation)AllocateRegisterIfPossible(null) ?? AllocateStackTemporary());
}
public Label(TerminalName name)
{
this.Name = name;
}
public bool IsLiveLocalVariableName(TerminalName name)
{
return(liveLocalVariableNames.ContainsKey(name));
}
public bool TryGetRepresentation(TerminalName refName, out Representation result)
{
result = (Representation)VariableNameToRepresentation[refName];
return(result != null);
}
