/// <param name="kind">The type of template tag we are processing</param>
/// <param name="templateText">The text of the template tag which we are offering a completion in</param>
/// <param name="templateStart">The offset in the buffer where the template starts</param>
/// <param name="triggerPoint">The point in the buffer where the completion was triggered</param>
internal CompletionSet GetCompletionSet(CompletionOptions options, VsProjectAnalyzer analyzer, TemplateTokenKind kind, string templateText, int templateStart, SnapshotPoint triggerPoint, out ITrackingSpan applicableSpan)
{
int position = triggerPoint.Position - templateStart;
IEnumerable <CompletionInfo> tags;
IDjangoCompletionContext context;
applicableSpan = GetWordSpan(templateText, templateStart, triggerPoint);
switch (kind)
{
case TemplateTokenKind.Block:
var block = DjangoBlock.Parse(templateText);
if (block != null)
{
if (position <= block.ParseInfo.Start + block.ParseInfo.Command.Length)
{
// we are completing before the command
// TODO: Return a new set of tags? Do nothing? Do this based upon ctrl-space?
tags = FilterBlocks(CompletionInfo.ToCompletionInfo(analyzer.GetTags(), StandardGlyphGroup.GlyphKeyword), triggerPoint);
}
else
{
// we are in the arguments, let the block handle the completions
context = new ProjectBlockCompletionContext(analyzer, _buffer);
tags = block.GetCompletions(context, position);
}
}
else
{
// no tag entered yet, provide the known list of tags.
tags = FilterBlocks(CompletionInfo.ToCompletionInfo(analyzer.GetTags(), StandardGlyphGroup.GlyphKeyword), triggerPoint);
}
break;
case TemplateTokenKind.Variable:
var variable = DjangoVariable.Parse(templateText);
context = new ProjectBlockCompletionContext(analyzer, _buffer);
if (variable != null)
{
tags = variable.GetCompletions(context, position);
}
else
{
// show variable names
tags = CompletionInfo.ToCompletionInfo(context.Variables, StandardGlyphGroup.GlyphGroupVariable);
}
break;
default:
throw new InvalidOperationException();
}
var completions = tags
.OrderBy(tag => tag.DisplayText, StringComparer.OrdinalIgnoreCase)
.Select(tag => new DynamicallyVisibleCompletion(
tag.DisplayText,
tag.InsertionText,
StripDocumentation(tag.Documentation),
_glyphService.GetGlyph(tag.Glyph, StandardGlyphItem.GlyphItemPublic),
"tag"));
return(new FuzzyCompletionSet(
"PythonDjangoTags",
Resources.DjangoTagsCompletionSetDisplayName,
applicableSpan,
completions,
options,
CompletionComparer.UnderscoresLast));
}