public override object VisitOnEventPushState(PParser.OnEventPushStateContext context)
{
//annotationSet?
if (context.annotationSet() != null)
{
throw new NotImplementedException("push state annotations");
}
// PUSH stateName
var targetState = FindState(context.stateName());
// ON eventList
var actions = new List <IStateAction>();
foreach (var token in context.eventList().eventId())
{
if (!CurrentScope.Lookup(token.GetText(), out PEvent evt))
{
throw Handler.MissingDeclaration(token, "event", token.GetText());
}
actions.Add(new EventPushState(token, evt, targetState));
}
return(actions.ToArray());
}
public override object VisitForeignFunDecl(PParser.ForeignFunDeclContext context)
{
// FUN name=Iden
var fun = (Function)nodesToDeclarations.Get(context);
// LPAREN funParamList? RPAREN
var paramList = context.funParamList() != null
? (Variable[])Visit(context.funParamList())
: new Variable[0];
fun.Signature.Parameters.AddRange(paramList);
// (COLON type)?
fun.Signature.ReturnType = ResolveType(context.type());
// SEMI
// no function body
fun.Role |= FunctionRole.Foreign;
// Creates
foreach (var createdInterface in context._interfaces)
{
if (CurrentScope.Lookup(createdInterface.GetText(), out Interface @interface))
{
fun.AddCreatesInterface(@interface);
}
else
{
throw Handler.MissingDeclaration(createdInterface, "interface", createdInterface.GetText());
}
}
return(fun);
}
public override object VisitNonDefaultEvent(PParser.NonDefaultEventContext context)
{
// HALT | iden
var eventName = context.GetText();
if (!CurrentScope.Lookup(eventName, out PEvent pEvent))
{
throw Handler.MissingDeclaration(context, "event", eventName);
}
return(pEvent);
}
public override object VisitOnEventGotoState(PParser.OnEventGotoStateContext context)
{
// annotationSet?
if (context.annotationSet() != null)
{
throw new NotImplementedException("state transition annotations");
}
Function transitionFunction;
if (context.funName != null)
{
// WITH funName=Iden
var funName = context.funName.GetText();
if (!CurrentScope.Lookup(funName, out transitionFunction))
{
throw Handler.MissingDeclaration(context.funName, "function", funName);
}
transitionFunction.Role |= FunctionRole.TransitionFunction;
}
else if (context.anonEventHandler() != null)
{
// WITH anonEventHandler
transitionFunction = CreateAnonFunction(context.anonEventHandler());
transitionFunction.Role |= FunctionRole.TransitionFunction;
}
else
{
// SEMI
transitionFunction = null;
}
// GOTO stateName
var target = FindState(context.stateName());
// ON eventList
var actions = new List <IStateAction>();
foreach (var eventIdContext in context.eventList().eventId())
{
if (!CurrentScope.Lookup(eventIdContext.GetText(), out PEvent evt))
{
throw Handler.MissingDeclaration(eventIdContext, "event", eventIdContext.GetText());
}
actions.Add(new EventGotoState(eventIdContext, evt, target, transitionFunction));
}
return(actions.ToArray());
}
public override object VisitStateIgnore(PParser.StateIgnoreContext context)
{
// IGNORE nonDefaultEventList
var actions = new List <IStateAction>();
foreach (var token in context.nonDefaultEventList()._events)
{
if (!CurrentScope.Lookup(token.GetText(), out PEvent evt))
{
throw Handler.MissingDeclaration(token, "event", token.GetText());
}
actions.Add(new EventIgnore(token, evt));
}
return(actions.ToArray());
}
public override object VisitStateExit(PParser.StateExitContext context)
{
Function fun;
if (context.noParamAnonEventHandler() != null)
{
fun = CreateAnonFunction(context.noParamAnonEventHandler());
}
else
{
var funName = context.funName.GetText();
if (!CurrentScope.Lookup(funName, out fun))
{
throw Handler.MissingDeclaration(context.funName, "function", funName);
}
}
fun.Role |= FunctionRole.ExitHandler;
return(Tuple.Create("EXIT", fun));
}
public override object VisitOnEventPushState(PParser.OnEventPushStateContext context)
{
// PUSH stateName
State targetState = FindState(context.stateName());
// ON eventList
List <IStateAction> actions = new List <IStateAction>();
foreach (PParser.EventIdContext token in context.eventList().eventId())
{
if (!CurrentScope.Lookup(token.GetText(), out PEvent evt))
{
throw Handler.MissingDeclaration(token, "event", token.GetText());
}
actions.Add(new EventPushState(token, evt, targetState));
}
return(actions.ToArray());
}
public override object VisitOnEventDoAction(PParser.OnEventDoActionContext context)
{
// annotationSet?
if (context.annotationSet() != null)
{
throw new NotImplementedException("state action annotations");
}
Function fun;
if (context.anonEventHandler() is PParser.AnonEventHandlerContext anonEventHandler)
{
// DO [...] anonEventHandler
fun = CreateAnonFunction(anonEventHandler);
}
else
{
// DO funName=Iden
var funName = context.funName.GetText();
if (!CurrentScope.Lookup(funName, out fun))
{
throw Handler.MissingDeclaration(context.funName, "function", funName);
}
}
// TODO: is this correct?
fun.Role |= FunctionRole.EventHandler;
// ON eventList
var actions = new List <IStateAction>();
foreach (var eventIdContext in context.eventList().eventId())
{
if (!CurrentScope.Lookup(eventIdContext.GetText(), out PEvent evt))
{
throw Handler.MissingDeclaration(eventIdContext, "event", eventIdContext.GetText());
}
actions.Add(new EventDoAction(eventIdContext, evt, fun));
}
return(actions.ToArray());
}
public override object VisitStateDefer(PParser.StateDeferContext context)
{
// annotationSet? SEMI
if (context.annotationSet() != null)
{
throw new NotImplementedException("event defer annotations");
}
// DEFER nonDefaultEventList
var eventContexts = context.nonDefaultEventList()._events;
var actions = new IStateAction[eventContexts.Count];
for (var i = 0; i < eventContexts.Count; i++)
{
var token = eventContexts[i];
if (!CurrentScope.Lookup(token.GetText(), out PEvent evt))
{
throw Handler.MissingDeclaration(token, "event", token.GetText());
}
actions[i] = new EventDefer(token, evt);
}
return(actions);
}
public override object VisitStateDefer(PParser.StateDeferContext context)
{
if (CurrentMachine.IsSpec)
{
throw Handler.DeferredEventInMonitor(context, CurrentMachine);
}
// DEFER nonDefaultEventList
var eventContexts = context.nonDefaultEventList()._events;
var actions = new IStateAction[eventContexts.Count];
for (var i = 0; i < eventContexts.Count; i++)
{
var token = eventContexts[i];
if (!CurrentScope.Lookup(token.GetText(), out PEvent evt))
{
throw Handler.MissingDeclaration(token, "event", token.GetText());
}
actions[i] = new EventDefer(token, evt);
}
return(actions);
}
public override object VisitImplMachineDecl(PParser.ImplMachineDeclContext context)
{
// MACHINE name=iden
var machine = (Machine)nodesToDeclarations.Get(context);
// cardinality?
var hasAssume = context.cardinality()?.ASSUME() != null;
var hasAssert = context.cardinality()?.ASSERT() != null;
var cardinality = int.Parse(context.cardinality()?.IntLiteral().GetText() ?? "-1");
machine.Assume = hasAssume ? cardinality : -1;
machine.Assert = hasAssert ? cardinality : -1;
// annotationSet?
if (context.annotationSet() != null)
{
throw new NotImplementedException("impl machine annotations");
}
// (COLON idenList)?
if (context.idenList() is PParser.IdenListContext interfaces)
{
foreach (var pInterfaceNameCtx in interfaces._names)
{
var pInterfaceName = pInterfaceNameCtx.GetText();
if (!CurrentScope.Lookup(pInterfaceName, out Interface pInterface))
{
throw Handler.MissingDeclaration(pInterfaceNameCtx, "interface", pInterfaceName);
}
machine.AddInterface(pInterface);
}
}
// receivesSends*
foreach (var receivesSends in context.receivesSends())
{
var recvSendTuple = (Tuple <string, PEvent[]>)Visit(receivesSends);
var eventSetType = recvSendTuple.Item1;
if (eventSetType.Equals("RECV", StringComparison.InvariantCulture))
{
if (machine.Receives == null)
{
machine.Receives = new EventSet();
}
foreach (PEvent @event in recvSendTuple.Item2)
{
machine.Receives.AddEvent(@event);
}
}
else if (eventSetType.Equals("SEND", StringComparison.InvariantCulture))
{
if (machine.Sends == null)
{
machine.Sends = new EventSet();
}
foreach (PEvent @event in recvSendTuple.Item2)
{
machine.Sends.AddEvent(@event);
}
}
else
{
throw Handler.InternalError(receivesSends, "grammar changed surrounding receives/sends.");
}
}
// machineBody
using (currentScope.NewContext(machine.Scope))
using (currentMachine.NewContext(machine))
{
Visit(context.machineBody());
}
return(machine);
}