public void Add_GraphInBetweenNodes_NoException()
{
BrigitGraph bg = new BrigitGraph();
bg.AddNode(new Node()
{
Data = 1
});
bg.AddNode(new Node()
{
Data = 3
});
BrigitGraph bg2 = new BrigitGraph();
bg2.AddNode(new Node()
{
Data = 6
});
bg2.AddNode(new Node()
{
Data = 7
});
bg.AddInBetween(bg.Head, bg2);
}
// public for testing purpose
// this chooses what is parsed next, IE a branch, a dialog or descision
public BrigitGraph ParseBrigitGraph(TomeStream stream)
{
BrigitGraph ll = new BrigitGraph();
while (!(stream.Complete() || stream.PeekChar() == '}'))
{
// getting rid of some beginning whitespace
EatWhitespace(stream);
// the real parsing starts here
// can't use switch need to use if elses
char c = stream.PeekChar();
if (Char.IsLetterOrDigit(c))
{
// start parsing as a dialog
// this one is simple. parse the dialog. then add
// it to the list
Node n = ParseDialog(stream);
// for the new AddInBetween function
// this will only work for whatever comes next. This isn't very good
// if there's multiple branches to place
// TODO make this functionality work better with dummy tail in the subgraphs
foreach (KeyValuePair <string, OpenChoice> kvp in BranchesToPlace)
{
if (kvp.Value.TailNode == null)
{
kvp.Value.TailNode = n;
break;
}
}
ll.AddNode(n);
}
else if (c == '@')
{
// naybe use a struct here?
Dictionary <string, OpenChoice> branchesToNode = new Dictionary <string, OpenChoice>();
// TODO change signature of ParseDescision to (obj stream, Dict brachesToNode)
BrigitGraph subGraph = ParseDescision(stream, branchesToNode);
foreach (KeyValuePair <string, OpenChoice> kvp in branchesToNode)
{
BranchesToPlace.Add(kvp.Key, kvp.Value);
}
// adding the dictionary entries to this
ll.AddGraph(subGraph);
}
else if (c == '{')
{
// this is a branch selector
// we can just pass in the big dictionary
BrigitGraph subGraph = ParseBranchSelector(BranchesToPlace);
ll.AddGraph(subGraph);
}
else if (c == '>')
{
// this is a branch name
// TODO change signature of ParseBranch to ParseBranch(stream, ref string branchName)
// TODO i'll probably need a wrapper for the Node and Ch entires
string branchName = String.Empty;
BrigitGraph subGraph = ParseBranch(stream, ref branchName);
if (BranchesToPlace.ContainsKey(branchName))
{
OpenChoice openCh = BranchesToPlace[branchName];
Node n = openCh.EnclosingNode;
Choice ch = openCh.BranchingChoice;
ll.AddInBetween(n, new List <Node>()
{
openCh.TailNode
}, subGraph);
ch.NextNode = n.Next.Count - 1;
}
else
{
String msg = String.Format("{0} not found in dictionary, could the name be mispelled?",
branchName);
throw new Exception(msg);
}
}
else
{
// panic here
String msg = String.Format("Expected beginning of character name, branch or chioce but found {0} at {1}",
stream.PeekChar(), stream.Position);
throw new Exception(msg);
}
EatWhitespace(stream);
}
if (!stream.Complete())
{
AssertChar(stream, '}');
}
return(ll);
}
