public override IGraph VisitGraph(DotGrammarParser.GraphContext context)
{
if ((context == null) || (ParsedGraph != null))
{
throw new NotImplementedException();
}
var id = context.id()?.GetText() ?? ModelHelper.DefaultGraphId;
var isDirected = context.DIGRAPH() != null;
var isStrict = context.STRICT() != null;
ParsedGraph = Graph.CreateGraph(id, isDirected, isStrict);
CurrentSubGraph = ParsedGraph;
ParsedGraph.SetAttributes(GetGraphAttributes(context.stmt_list().stmt()));
ParsedGraph.SetNodeAttributes(GetNodeAttributes(context.stmt_list().stmt()));
ParsedGraph.SetEdgeAttributes(GetEdgeAttributes(context.stmt_list().stmt()));
foreach (var stmtContext in context.stmt_list().stmt())
{
HandleNode(stmtContext.node_stmt());
HandleEdgeLine(stmtContext.edge_stmt());
HandleSubgraph(stmtContext.subgraph());
HandleExitSubgraph(stmtContext.subgraph());
}
return(ParsedGraph);
}
private IList <NodePort> HandleSubgraph(DotGrammarParser.SubgraphContext context)
{
var nodeList = new List <NodePort>();
if (context == null)
{
return(nodeList);
}
var id = context.id() == null
? string.Format(CultureInfo.InvariantCulture, ModelHelper.NewSubGraphFormat,
ParsedGraph.GetSubGraphs().Count() + 1)
: context.id().GetText();
var graphAttrs = GetGraphAttributes(context.stmt_list().stmt());
var nodeAttrs = GetNodeAttributes(context.stmt_list().stmt());
var edgeAttrs = GetEdgeAttributes(context.stmt_list().stmt());
CurrentSubGraph = CurrentSubGraph.CreateSubGraph(id, graphAttrs, nodeAttrs, edgeAttrs);
foreach (var stmtContext in context.stmt_list().stmt())
{
nodeList.AddRange(HandleNode(stmtContext.node_stmt()));
nodeList.AddRange(HandleEdgeLine(stmtContext.edge_stmt()));
nodeList.AddRange(HandleSubgraph(stmtContext.subgraph()));
HandleExitSubgraph(stmtContext.subgraph());
}
return(nodeList);
}