public static bool TryScan(CodeReader reader, out Interactive scanned)
{
scanned = null;
string line = reader.NextLine();
if (!Regex.IsMatch(line, RegEx))
{
return(false);
}
string name = Regex.Match(line, @"(transistion:|" + RegExHelper.Variable + @"\()").Value;
name = name.Remove(name.Length - 1);
string parameters = Regex.Match(line, "\\(" + RegExHelper.FunctionParameters + "\\)").Value.Trim('(', ')');
scanned = new Interactive(name, String.IsNullOrWhiteSpace(parameters) ? new string[0] : parameters.Split(','));
line = reader.NextLine();
while (!reader.Done && !reader.EndingKeyword)
{
if (Command.TryScan(reader.Copy(), out Command command))
{
scanned.AddCommand(command);
reader.Skip(command.Lines - 1);
line = reader.NextLine();
}
else
{
throw new Exception("Unknown Command in Line " + reader.TextLine + ".");
}
}
return(true);
}
public static DefinitionCollection Create(CodeReader reader)
{
CodeReader r = reader.Copy();
DefinitionCollection result = new DefinitionCollection();
result.definitions = new List <Definition>();
List <string> definitions = new List <string>();
while (!r.Done)
{
string line = r.NextLine();
if (line.StartsWith("def "))
{
definitions.Add(line);
}
}
foreach (var def in definitions)
{
int mid = def.IndexOf(" as ");
string patternIn = def.Remove(mid).Substring(4);
string patternOut = def.Substring(mid + 4);
Definition d = new Definition(patternIn, patternOut.TrimEnd(';'));
result.definitions.Add(d);
}
return(result);
}
public static Presentation Parse(CodeReader reader)
{
CodeReader r = reader.Copy();
Presentation presentation = new Presentation();
DefinitionCollection dc = DefinitionCollection.Create(r);
r = dc.CreateReader(r);
while (!r.Done)
{
var line = r.NextLine();
if (Import.TryScan(r.Copy(), out Import import))
{
presentation.AddImport(import);
r.Skip(import.LineLength - 1);
}
else if (Style.TryScan(r.Copy(), out Style style))
{
presentation.AddStyle(style);
r.Skip(style.LineLength - 1);
}
else if (Interactive.TryScan(r.Copy(), out Interactive interactive))
{
presentation.AddInteractive(interactive);
r.Skip(interactive.LineLength - 1);
}
else if (Pattern.TryScan(r.Copy(), out Pattern pattern))
{
presentation.AddPattern(pattern);
r.Skip(pattern.LineLength - 1);
}
else if (Slide.TryScan(r.Copy(), presentation, out Slide slide))
{
presentation.AddSlide(slide);
r.Skip(slide.LineLength - 1);
}
else
{
throw new Exception("Unknown Command in Line " + r.CurrentLine + ": " + r.PeekLine());
}
Console.WriteLine(line);
}
return(presentation);
}
internal CodeReader CreateReader(CodeReader reader)
{
string text = "";
CodeReader r = reader.Copy();
while (!r.Done)
{
string line = r.NextLine();
if (line.StartsWith("def "))
{
continue;
}
var matches = definitions.Where(d => d.IsMatch(line));
foreach (var match in matches)
{
line = match.Apply(line);
}
text += line + "\n";
}
return(CodeReader.FromText(text));
}