private RouteAST Route()
{
Eat(TokenType.ROUTE);
AST definition = Inherit();
Eat(TokenType.LPAR);
RouteParamsAST routeParamsAST;
if (currentToken.Type != TokenType.SEMIC)
{
routeParamsAST = RouteParameters();
}
else
{
routeParamsAST = new RouteParamsAST(new List <RouteParamAST>());
}
Eat(TokenType.SEMIC);
RouteInPortAST inPortAST;
if (currentToken.Type != TokenType.SEMIC)
{
inPortAST = RouteInPorts();
}
else
{
inPortAST = new RouteInPortAST(new List <AST>());
}
Eat(TokenType.SEMIC);
RoutePortAST outPortAST;
if (currentToken.Type != TokenType.RPAR)
{
outPortAST = RoutePorts();
}
else
{
outPortAST = new RoutePortAST(new List <WordAST>());
}
Eat(TokenType.RPAR);
StatementsAST statementsAST = Statements();
Eat(TokenType.END);
return(new RouteAST(definition, routeParamsAST, inPortAST, outPortAST, statementsAST));
}
private List <RouteInPort> Visit(RouteInPortAST routeInPortAST)
{
return(routeInPortAST.Ports.ConvertAll(routePort =>
{
switch (Visit(routePort))
{
case string name:
return new RouteInPort()
{
Name = name, Nullable = false
};
case RouteInPort routeInPort:
return routeInPort;
default:
throw logger.Error(new SemanticException(routePort.FindToken(), "Unknown type for in port."));
}
}));
}
