MmlSourceLineSet ProcessTrackLine(MmlLine line)
{
if (in_comment_mode)
return null;
result.Lexer.SetCurrentInput (line);
string section = previous_section;
int [] range = previous_range;
if (result.Lexer.IsWhitespace (line.PeekChar ()))
result.Lexer.SkipWhitespaces (true);
else {
if (result.Lexer.IsIdentifier (line.PeekChar (), true)) {
section = result.Lexer.ReadNewIdentifier ();
result.Lexer.SkipWhitespaces (false);
}
if (result.Lexer.IsNumber (line.PeekChar ())) {
range = result.Lexer.ReadRange ().ToArray ();
result.Lexer.SkipWhitespaces (true);
}
}
if (range == null)
throw new MmlException ("Current line indicates no track number, and there was no indicated tracks previously.", line.Location);
previous_section = section;
previous_range = range;
result.Lexer.SkipWhitespaces (false);
var ts = new MmlTrackSource (section, range);
ts.Lines.Add (line);
result.Tracks.Add (ts);
return ts;
}
void ParseTrackLines(MmlTrackSource src)
{
var tokens = new List<MmlToken> ();
foreach (var line in src.Lines)
foreach (var entry in aliases)
line.Text = line.Text.Replace (entry.Key, entry.Value);
source.Lexer.SetCurrentInput (src);
while (source.Lexer.Advance ())
tokens.Add (source.Lexer.CreateParsedToken ());
// Compilation conditionals are actually handled here.
if (!result.Conditional.ShouldCompileBlock (src.BlockName))
return;
foreach (var t in src.Tracks) {
if (result.Conditional.ShouldCompileTrack (t))
result.GetTrack (t).Tokens.AddRange (tokens);
}
}