private List <KeyValuePair <string, Color> > GenerateStyleMap(IEnumerable <KeyValuePair <StyleClass <TextPattern>, MatchLocation> > targets, string input)
{
List <KeyValuePair <string, Color> > styleMap = new List <KeyValuePair <string, Color> >();
MatchLocation previousLocation = new MatchLocation(beginning: 0, end: 0);
int chocolateEnd = 0;
foreach (KeyValuePair <StyleClass <TextPattern>, MatchLocation> styledLocation in targets)
{
MatchLocation currentLocation = styledLocation.Value;
if (previousLocation.End > currentLocation.Beginning)
{
previousLocation = new MatchLocation(beginning: 0, end: 0);
}
int vanillaStart = previousLocation.End;
int vanillaEnd = currentLocation.Beginning;
int chocolateStart = vanillaEnd;
chocolateEnd = currentLocation.End;
string vanilla = input.Substring(vanillaStart, vanillaEnd - vanillaStart);
string chocolate = input.Substring(chocolateStart, chocolateEnd - chocolateStart);
chocolate = matchFoundHandlers[styledLocation.Key].Invoke(input, styledLocation.Value, input.Substring(chocolateStart, chocolateEnd - chocolateStart));
if (vanilla != "")
{
styleMap.Add(new KeyValuePair <string, Color>(vanilla, styleSheet.UnstyledColor));
}
if (chocolate != "")
{
styleMap.Add(new KeyValuePair <string, Color>(chocolate, styledLocation.Key.Color));
}
previousLocation = currentLocation.Prototype();
}
if (chocolateEnd < input.Length)
{
string vanilla = input.Substring(chocolateEnd, input.Length - chocolateEnd);
styleMap.Add(new KeyValuePair <string, Color>(vanilla, styleSheet.UnstyledColor));
}
return(styleMap);
}
/// <summary>
/// Finds matches between the TextPattern instance and a given object.
/// </summary>
/// <param name="input">The string to which the TextPattern instance should be compared.</param>
/// <returns>Returns a collection of the locations in the string under comparison that
/// match the TextPattern instance.</returns>
public override IEnumerable <MatchLocation> GetMatches(string input)
{
MatchCollection matches = regexPattern.Matches(input);
if (matches.Count == 0)
{
yield break;
}
foreach (Match match in matches)
{
int beginning = match.Index;
int end = beginning + match.Length;
MatchLocation location = new MatchLocation(beginning, end);
yield return(location);
}
}