/// <summary>
/// Builds a text generator based on the given format.
/// </summary>
/// <param name="format">The format to parse.</param>
/// <returns>The text generator.</returns>
public Generator Compile(string format)
{
if (format == null)
{
throw new ArgumentNullException("format");
}
CompoundGenerator generator = new CompoundGenerator(_masterDefinition, new ArgumentCollection());
Trimmer trimmer = new Trimmer();
int formatIndex = buildCompoundGenerator(_masterDefinition, generator, trimmer, format, 0);
string trailing = format.Substring(formatIndex);
generator.AddStaticGenerators(trimmer.RecordText(trailing, false, false));
trimmer.Trim();
return new Generator(generator);
}
private int buildCompoundGenerator(
TagDefinition tagDefinition,
CompoundGenerator generator,
Trimmer trimmer,
string format, int formatIndex)
{
while (true)
{
Match match = findNextTag(tagDefinition, format, formatIndex);
if (!match.Success)
{
if (tagDefinition.ClosingTags.Any())
{
string message = String.Format(Resources.MissingClosingTag, tagDefinition.Name);
throw new FormatException(message);
}
break;
}
string leading = format.Substring(formatIndex, match.Index - formatIndex);
if (match.Groups["key"].Success)
{
generator.AddStaticGenerators(trimmer.RecordText(leading, true, true));
formatIndex = match.Index + match.Length;
string key = match.Groups["key"].Value;
string alignment = match.Groups["alignment"].Value;
string formatting = match.Groups["format"].Value;
KeyGenerator keyGenerator = new KeyGenerator(key, alignment, formatting);
generator.AddGenerator(keyGenerator);
}
else if (match.Groups["open"].Success)
{
formatIndex = match.Index + match.Length;
string tagName = match.Groups["name"].Value;
TagDefinition nextDefinition = _tagLookup[tagName];
if (nextDefinition == null)
{
string message = String.Format(Resources.UnknownTag, tagName);
throw new FormatException(message);
}
if (nextDefinition.HasContent)
{
generator.AddStaticGenerators(trimmer.RecordText(leading, true, false));
ArgumentCollection arguments = getArguments(nextDefinition, match);
CompoundGenerator compoundGenerator = new CompoundGenerator(nextDefinition, arguments);
formatIndex = buildCompoundGenerator(nextDefinition, compoundGenerator, trimmer, format, formatIndex);
generator.AddGenerator(nextDefinition, compoundGenerator);
}
else
{
generator.AddStaticGenerators(trimmer.RecordText(leading, true, true));
Match nextMatch = findNextTag(nextDefinition, format, formatIndex);
ArgumentCollection arguments = getArguments(nextDefinition, nextMatch);
InlineGenerator inlineGenerator = new InlineGenerator(nextDefinition, arguments);
generator.AddGenerator(inlineGenerator);
}
}
else if (match.Groups["close"].Success)
{
generator.AddStaticGenerators(trimmer.RecordText(leading, true, false));
string tagName = match.Groups["name"].Value;
TagDefinition nextDefinition = _tagLookup[tagName];
formatIndex = match.Index;
if (tagName == tagDefinition.Name)
{
formatIndex += match.Length;
}
break;
}
else if (match.Groups["comment"].Success)
{
generator.AddStaticGenerators(trimmer.RecordText(leading, true, false));
formatIndex = match.Index + match.Length;
}
else if (match.Groups["unknown"].Success)
{
throw new FormatException(Resources.UnknownTag);
}
}
return formatIndex;
}
