MonoDevelop.Refactoring.ResolveCommandHandler.GetHeuristicResult C# (CSharp) Method

		static ResolveResult GetHeuristicResult (Document doc, DocumentLocation location, ref AstNode node)
		{
			int offset = doc.Editor.Caret.Offset;
			bool wasLetter = false, wasWhitespaceAfterLetter = false;
			while (offset < doc.Editor.Length) {
				char ch = doc.Editor.GetCharAt (offset);
				bool isLetter = char.IsLetterOrDigit (ch) || ch == '_';
				bool isWhiteSpace = char.IsWhiteSpace (ch);
				bool isValidPunc = ch == '.' || ch == '<' || ch == '>';

				if (!(wasLetter && wasWhitespaceAfterLetter) && (isLetter || isWhiteSpace || isValidPunc)) {
					if (isValidPunc) {
						wasWhitespaceAfterLetter = false;
						wasLetter = false;
					}
					offset++;
				} else {
					offset--;
					while (offset > 1) {
						ch = doc.Editor.GetCharAt (offset - 1);
						if (!(ch == '.' || char.IsWhiteSpace (ch)))
							break;
						offset--;
					}
					break;
				}

				wasLetter |= isLetter;
				if (wasLetter)
					wasWhitespaceAfterLetter |= isWhiteSpace;
			}

			var unit = SyntaxTree.Parse (CreateStub (doc, offset), doc.FileName);

			return ResolveAtLocation.Resolve (
				doc.Compilation, 
				doc.ParsedDocument.ParsedFile as CSharpUnresolvedFile,
				unit,
				location, 
				out node);
		}