public override object VisitStateDecl(PParser.StateDeclContext context)
{
string symbolName = context.name.GetText();
AST.States.State decl = CurrentScope.Put(symbolName, context);
nodesToDeclarations.Put(context, decl);
return(null);
}
public State Put(string name, PParser.StateDeclContext tree)
{
State state = new State(tree, name);
CheckConflicts(state, Namespace(states));
states.Add(name, state);
return(state);
}
public override object VisitStateDecl(PParser.StateDeclContext context)
{
// STATE name=iden
var state = (State)nodesToDeclarations.Get(context);
// START?
state.IsStart = context.START() != null;
// temperature=(HOT | COLD)?
state.Temperature = context.temperature == null
? StateTemperature.WARM
: context.temperature.Text.Equals("HOT")
? StateTemperature.HOT
: StateTemperature.COLD;
// annotationSet?
if (context.annotationSet() != null)
{
throw new NotImplementedException("state annotations");
}
// LBRACE stateBodyItem* RBRACE ;
foreach (var stateBodyItemContext in context.stateBodyItem())
{
switch (Visit(stateBodyItemContext))
{
case IStateAction[] actions:
foreach (var action in actions)
{
if (state.HasHandler(action.Trigger))
{
// TODO: get the exact EventIdContext instead of stateBodyItemContext
throw Handler.DuplicateEventAction(action.SourceLocation, state[action.Trigger], state);
}
state[action.Trigger] = action;
}
break;
case Tuple <string, Function> entryOrExit:
if (entryOrExit.Item1.Equals("ENTRY"))
{
if (state.Entry != null)
{
throw Handler.DuplicateStateEntry(stateBodyItemContext, state.Entry, state);
}
state.Entry = entryOrExit.Item2;
}
else
{
if (state.Exit != null)
{
throw Handler.DuplicateStateExitHandler(stateBodyItemContext, state.Exit, state);
}
state.Exit = entryOrExit.Item2;
}
break;
default:
throw Handler.InternalError(stateBodyItemContext, "state body item not recognized");
}
}
if (state.IsStart)
{
if (CurrentMachine.StartState != null)
{
throw Handler.DuplicateDeclaration(context, state, CurrentMachine.StartState);
}
CurrentMachine.StartState = state;
CurrentMachine.PayloadType = state.Entry?.Signature.Parameters.ElementAtOrDefault(0)?.Type ?? PrimitiveType.Null;
}
return(state);
}
public override object VisitStateDecl(PParser.StateDeclContext context)
{
// STATE name=iden
var state = (State)nodesToDeclarations.Get(context);
state.OwningMachine = CurrentMachine;
// START?
state.IsStart = context.START() != null;
// temperature=(HOT | COLD)?
state.Temperature = context.temperature == null
? StateTemperature.Warm
: context.HOT() != null
? StateTemperature.Hot
: StateTemperature.Cold;
// LBRACE stateBodyItem* RBRACE ;
foreach (var stateBodyItemContext in context.stateBodyItem())
{
switch (Visit(stateBodyItemContext))
{
case IStateAction[] actions:
foreach (var action in actions)
{
if (state.HasHandler(action.Trigger))
{
throw Handler.DuplicateEventAction(action.SourceLocation, state[action.Trigger], state);
}
if (action.Trigger.Name.Equals("null") && CurrentMachine.IsSpec)
{
throw Handler.NullTransitionInMonitor(action.SourceLocation, CurrentMachine);
}
state[action.Trigger] = action;
}
break;
case Tuple <string, Function> entryOrExit:
if (entryOrExit.Item1.Equals("ENTRY"))
{
if (state.Entry != null)
{
throw Handler.DuplicateStateEntry(stateBodyItemContext, state.Entry, state);
}
state.Entry = entryOrExit.Item2;
}
else
{
if (state.Exit != null)
{
throw Handler.DuplicateStateExitHandler(stateBodyItemContext, state.Exit, state);
}
state.Exit = entryOrExit.Item2;
}
break;
default:
throw Handler.InternalError(stateBodyItemContext,
new ArgumentOutOfRangeException(nameof(context)));
}
}
if (state.IsStart)
{
if (CurrentMachine.StartState != null)
{
throw Handler.DuplicateStartState(context, state, CurrentMachine.StartState, CurrentMachine);
}
CurrentMachine.StartState = state;
CurrentMachine.PayloadType =
state.Entry?.Signature.Parameters.ElementAtOrDefault(0)?.Type ?? PrimitiveType.Null;
}
return(state);
}