/****************************************************************
* Begin!!!
***************************************************************/
/****************************************************************
* Program Node
***************************************************************/
public Node Program()
{
var progToken = Expect(TokenCategory.PROGRAM);
var progName = new Identifier()
{
AnchorToken = Expect(TokenCategory.IDENTIFIER)
};
var declList = EvaluateDeclarations();
var stmtList = EvaluateStatements();
var stop = new Stop()
{
AnchorToken = Expect(TokenCategory.STOP)
};
if (this.labelCache != null)
{
stop.Add(this.labelCache);
this.labelCache = null;
}
var end = new End()
{
AnchorToken = Expect(TokenCategory.END)
};
var prog = new Program()
{
progName, declList, stmtList, stop, end
};
prog.AnchorToken = progToken;
while (CurrentToken != TokenCategory.EOF)
{
if (CurrentToken == TokenCategory.SUBROUTINE)
{
prog.Add(Subroutine());
}
else
{
prog.Add(Function());
}
}
Expect(TokenCategory.EOF);
return(prog);
}
public DateRange Expand(TimeSpan margin) => new DateRange(Start.Add(-margin), Stop.Add(margin));