private static bool DoQuery(Interpreter interpreter, SourceReader reader, State state)
{
var first = reader.ReadToken();
reader.SkipSpace();
var namesub = reader.Read(TokenType.Text, "list name").Split(new[] { '.' }, 2).ToArray();
var q = new Query(namesub[0].Value.Trim(), namesub.Length == 2 ? namesub[1].Value : "", "", reader.Take(TokenType.Dollar), null, null);
Token<TokenType> token = null;
// Class filter list. Not initialized unless class filters actually exist.
List<Tuple<bool, string>> cfList = null;
while (true)
{
if (reader.Take(TokenType.Hyphen))
{
// Initialize the filter list.
(cfList ?? (cfList = new List<Tuple<bool, string>>())).Clear();
do
{
bool notin = reader.Take(TokenType.Exclamation);
if (notin && q.Exclusive)
throw new ProcessusException(reader.Source, reader.PrevToken, "Cannot use the '!' modifier on exclusive class filters.");
cfList.Add(Tuple.Create(!notin, reader.Read(TokenType.Text, "class identifier").Value.Trim()));
} while (reader.Take(TokenType.Pipe));
q.ClassFilters.Add(cfList.ToArray());
}
else if (reader.Take(TokenType.Question))
{
token = reader.Read(TokenType.Regex, "regex");
q.RegexFilters.Add(Tuple.Create(true, Util.ParseRegex(token.Value)));
}
else if (reader.Take(TokenType.Without))
{
token = reader.Read(TokenType.Regex, "regex");
q.RegexFilters.Add(Tuple.Create(false, Util.ParseRegex(token.Value)));
}
else if (reader.Take(TokenType.DoubleColon))
{
token = reader.Read(TokenType.Text, "carrier name");
q.Carrier = token.Value.Trim();
if (!reader.Take(TokenType.RightAngle))
{
throw new ProcessusException(reader.Source, token, "Expected '>' after carrier. (The carrier should be your last query argument!)");
}
break;
}
else if (reader.Take(TokenType.RightAngle))
{
break;
}
else if (!reader.SkipSpace())
{
var t = !reader.End ? reader.ReadToken() : null;
throw new ProcessusException(reader.Source, t, t == null ? "Unexpected end-of-file in query." : "Unexpected token '" + t.Value + "' in query.");
}
}
interpreter.Print(interpreter.Engine.Vocabulary.Query(interpreter.RNG, q));
return false;
}
private static bool DoSubDefinition(Token<TokenType> first, Interpreter interpreter, SourceReader reader, State state)
{
bool meta = reader.Take(TokenType.Question);
reader.Read(TokenType.LeftSquare);
var parameters = new List<Tuple<string, TagArgType>>();
var tName = reader.Read(TokenType.Text, "subroutine name");
if (!Util.ValidateName(tName.Value))
throw new ProcessusException(reader.Source, tName, "Invalid subroutine name: '" + tName.Value + "'");
if (!reader.Take(TokenType.Colon))
{
reader.Read(TokenType.RightSquare);
}
else
{
while (true)
{
bool isTokens = reader.Take(TokenType.At);
parameters.Add(Tuple.Create(reader.Read(TokenType.Text, "parameter name").Value, isTokens ? TagArgType.Tokens : TagArgType.Result));
if (reader.Take(TokenType.RightSquare, false)) break;
reader.Read(TokenType.Semicolon);
}
}
reader.SkipSpace();
reader.Read(TokenType.Colon);
var body = reader.ReadToScopeClose(TokenType.LeftSquare, TokenType.RightSquare, BracketPairs.All).ToArray();
if (meta)
{
interpreter.PushState(State.CreateDerivedDistinct(reader.Source, body, interpreter));
state.AddPreBlueprint(new FunctionBlueprint(interpreter, _ =>
{
_.Engine.Subroutines.Define(tName.Value, Subroutine.FromString(tName.Value, _.PopResultString(), parameters.ToArray()));
return false;
}));
}
else
{
interpreter.Engine.Subroutines.Define(tName.Value, Subroutine.FromTokens(tName.Value, reader.Source, body, parameters.ToArray()));
}
return meta;
}