/// <summary>
/// This does the actual node construction
/// </summary>
private Node(NodeProvider provider, ITextSnapshot snapshot, SourceLocation location, int length)
{
this.Provider = provider;
snapshotSpan = new SnapshotSpan(snapshot, location.Position, length);
int offset = 0;
ITextSnapshotLine line = snapshot.GetLineFromPosition(location.Position);
// if the Value list is not empty, expand the snapshotSpan
// to include leading whitespaces, so that when a user
// types smth in this space he will get the dropdown
for (; location.Position - offset > line.Extent.Start.Position; offset++)
{
switch (snapshot[location.Position - offset - 1])
{
case ' ':
case '\t':
continue;
default:
break;
}
break;
}
extensionSpan = new SnapshotSpan(snapshot, location.Position - offset, offset);
}
/// <summary>
/// Creates the designer (proxy) node over the real syntax node passed in as a parameter
/// Also recursively creates child nodes for all 'real' node children
/// </summary>
/// <param name="parent"></param>
/// <param name="snapshot"></param>
/// <param name="node"></param>
public Node(NodeProvider provider, Node parent, ITextSnapshot snapshot, AstNode node) : this(provider, snapshot, node.Location, node.Span.Length)
{
Parent = parent;
this.astnode = node;
foreach (AstNode child in node.ChildNodes)
{
if (child != null)
{
children.Add(new Node(provider, this, snapshot, child));
}
}
}
public HighlightWordTagger(ITextView view, ITextBuffer sourceBuffer, ITextSearchService textSearchService, ITextStructureNavigator textStructureNavigator)
{
nodeProvider = (new NodeProviderBroker()).GetNodeProvider(sourceBuffer);
this.View = view;
this.SourceBuffer = sourceBuffer;
this.TextSearchService = textSearchService;
this.TextStructureNavigator = textStructureNavigator;
this.WordSpans = new NormalizedSnapshotSpanCollection();
this.CurrentWord = null;
this.View.Caret.PositionChanged += CaretPositionChanged;
this.View.LayoutChanged += ViewLayoutChanged;
}
public TripleClickMouseProcessor(IWpfTextView view, NodeProvider nodeprovider = null)
{
_view = view;
_view.LayoutChanged += (sender, args) =>
{
if (_dragging && args.OldSnapshot != args.NewSnapshot)
{
StopDrag();
}
};
nodeProvider = nodeprovider;
}
public NodeProvider GetNodeProvider(ITextBuffer buffer)
{
NodeProvider provider;
if (!buffer.Properties.TryGetProperty(typeof(NodeProvider), out provider))
{
LanguageOption options;
if (!buffer.Properties.TryGetProperty(typeof(LanguageOption), out options))
{
if (buffer.CurrentSnapshot.LineCount > 0)
{ // Determine language
// try to determine from comments
if (!Utils.TryGetLanguageDeclaration(buffer.CurrentSnapshot.GetLineFromLineNumber(0).GetText(), out options))
{// try to determine from file extension
ITextDocument doc;
if (buffer.Properties.TryGetProperty(typeof(ITextDocument), out doc))
{
if (doc.FilePath.EndsWith(".uosl"))
{
options = LanguageOption.Extended;
}
else
{
options = LanguageOption.Enhanced;
}
}
}
}
buffer.Properties.AddProperty(typeof(LanguageOption), options);
}
parser = new Parser(UOSL.Service.UOSLBase.GetGrammar(options));
buffer.Properties.AddProperty(typeof(NodeProvider), provider = new NodeProvider(parser, buffer));
}
return(provider);
}
/// <summary>
/// Adds a "nodeless" node, primarily intended to denote comments.
/// </summary>
public Node(NodeProvider provider, Node parent, ITextSnapshot snapshot, Token token) : this(provider, snapshot, token.Location, token.Length)
{
}
public SignatureHelpSource(ITextBuffer textBuffer)
{
nodeprovider = nbroker.GetNodeProvider(textBuffer);
m_textBuffer = textBuffer;
}
