private void TokensChanged(object src, TokensChangedEventArgs args)
{
if (args.NewTokens.Count == 0)
{
return;
}
DocumentState state = src as DocumentState;
if (state == null)
{
return;
}
var temp = TagsChanged;
if (temp == null)
{
return;
}
int start = args.NewTokens[0].GetStart(state.CurrentSnapshot);
int end = args.NewTokens[args.NewTokens.Count - 1].GetEnd(state.CurrentSnapshot);
temp(this, new SnapshotSpanEventArgs(new SnapshotSpan(state.CurrentSnapshot, new Span(start, end - start))));
}
public static DocumentState CreateAndRegister(IRustLexer lexer, ITextBuffer buffer)
{
DocumentState state;
if(buffer.Properties.TryGetProperty<DocumentState>(Key, out state))
return state;
state = new DocumentState(lexer, buffer.CurrentSnapshot);
buffer.Changed += (src, arg) => state.ApplyTextChanges(arg);
buffer.Properties.AddProperty(Key, state);
return state;
}
public static bool TryGet(ITextBuffer b, out DocumentState t)
{
DocumentState temp;
if(!b.Properties.TryGetProperty<DocumentState>(Key, out temp))
{
t = null;
return false;
}
t = temp;
return true;
}