public override void OnCodeAnalysis(CodeAnalysisArgs args)
{
switch (args.Phase) {
case CodeAnalysisPhase.Allocate:
if (IsSet(AstNodeFlags.AllocateSlot) && !Scope.SlotDefined(Name))
Slot = Scope.CreateSlot(Name);
break;
case CodeAnalysisPhase.Binding:
Slot = Scope.FindSlot(Name);
if (Slot == null && !IsSet(AstNodeFlags.SuppressNotDefined))
args.Context.ReportError(this.Location, "Variable " + Name + " is not declared");
if (Slot != null) {
//unless suppressed, mark this ID use as RValue
if (!IsSet(AstNodeFlags.NotRValue))
Slot.Flags |= SlotFlags.UsedAsRValue;
if (IsSet(AstNodeFlags.IsLValue))
Slot.Flags |= SlotFlags.ExplicitlyAssigned;
}
SetupEvaluateMethod();
break;
}//switch
base.OnCodeAnalysis(args);
}
private void RunAnalysisPhases(AstNode astRoot, CompilerContext context, params CodeAnalysisPhase[] phases)
{
CodeAnalysisArgs args = new CodeAnalysisArgs(context);
foreach (CodeAnalysisPhase phase in phases) {
switch (phase) {
case CodeAnalysisPhase.AssignScopes:
astRoot.Scope = new Scope(astRoot, null);
break;
case CodeAnalysisPhase.MarkTailCalls:
if (!Grammar.FlagIsSet(LanguageFlags.TailRecursive)) continue;//foreach loop - don't run the phase
astRoot.Flags |= AstNodeFlags.IsTail;
break;
}//switch
args.Phase = phase;
astRoot.OnCodeAnalysis(args);
}//foreach phase
}