private static bool DoMath(Interpreter interpreter, Token <R> firstToken, PatternReader reader, State state)
{
bool isStatement = reader.Take(R.At);
var tokens = reader.ReadToScopeClose(R.LeftParen, R.RightParen, Brackets.All);
interpreter.PushState(State.CreateSub(reader.Source, tokens, interpreter));
state.AddPreBlueprint(new DelegateBlueprint(interpreter, _ =>
{
var v = Parser.Calculate(_, _.PopResultString());
if (!isStatement)
{
_.Print(_.FormatNumber(v));
}
return(false);
}));
return(true);
}
private static bool DoQuery(Interpreter interpreter, Token <R> firstToken, PatternReader reader, State state)
{
reader.SkipSpace();
bool storeMacro = false;
bool macroIsGlobal = false;
string macroName = null;
// Check if this is a macro
if (reader.Take(R.At))
{
reader.SkipSpace();
var macroNameToken = reader.Read(R.Text, "query macro name");
if (!ValidateName(macroNameToken.Value))
{
throw new RantException(reader.Source, macroNameToken, "Invalid macro name.");
}
macroName = macroNameToken.Value;
reader.SkipSpace();
// Check if the macro is a definition or a call.
// A definition will start with a colon ':' or equals '=' after the name. A call will only consist of the name.
switch (reader.ReadToken().ID)
{
case R.Colon: // Local definition
{
storeMacro = true;
}
break;
case R.Equal: // Global definition
{
storeMacro = true;
macroIsGlobal = true;
}
break;
case R.RightAngle: // Call
{
Query q;
if (!interpreter.LocalQueryMacros.TryGetValue(macroName, out q) && !interpreter.Engine.GlobalQueryMacros.TryGetValue(macroName, out q))
{
throw new RantException(reader.Source, macroNameToken, "Nonexistent query macro '\{macroName}'");
}
interpreter.Print(interpreter.Engine.Vocabulary?.Query(interpreter.RNG, q, interpreter.CarrierSyncState));
return(false);
}
}
}
reader.SkipSpace();
var namesub = reader.Read(R.Text, "dictionary name").Split(new[] { '.' }, 2).ToArray();
reader.SkipSpace();
bool exclusive = reader.Take(R.Dollar);
List <Tuple <bool, string> > cfList = null;
List <Tuple <bool, string>[]> classFilterList = null;
List <Tuple <bool, Regex> > regList = null;
Carrier carrier = null;
Token <R> queryToken = null;
// Read query arguments
while (true)
{
reader.SkipSpace();
if (reader.Take(R.Hyphen))
{
reader.SkipSpace();
// Initialize the filter list.
(cfList ?? (cfList = new List <Tuple <bool, string> >())).Clear();
do
{
bool notin = reader.Take(R.Exclamation);
reader.SkipSpace();
if (notin && exclusive)
{
throw new RantException(reader.Source, reader.PrevToken, "Cannot use the '!' modifier on exclusive class filters.");
}
cfList.Add(Tuple.Create(!notin, reader.Read(R.Text, "class identifier").Value.Trim()));
reader.SkipSpace();
} while (reader.Take(R.Pipe));
(classFilterList ?? (classFilterList = new List <Tuple <bool, string>[]>())).Add(cfList.ToArray());
}
else if (reader.Take(R.Question))
{
reader.SkipSpace();
queryToken = reader.Read(R.Regex, "regex");
(regList ?? (regList = new List <Tuple <bool, Regex> >())).Add(Tuple.Create(true, ParseRegex(queryToken.Value)));
}
else if (reader.Take(R.Without))
{
reader.SkipSpace();
queryToken = reader.Read(R.Regex, "regex");
(regList ?? (regList = new List <Tuple <bool, Regex> >())).Add(Tuple.Create(false, ParseRegex(queryToken.Value)));
}
else if (reader.Take(R.DoubleColon)) // Start of carrier
{
reader.SkipSpace();
CarrierSyncType type;
Token <R> typeToken;
switch ((typeToken = reader.ReadToken()).ID)
{
case R.Exclamation:
type = CarrierSyncType.Unique;
break;
case R.Equal:
type = CarrierSyncType.Match;
break;
case R.Ampersand:
type = CarrierSyncType.Rhyme;
break;
default:
throw new RantException(reader.Source, typeToken, "Unrecognized token '\{typeToken.Value}' in carrier.");
}
reader.SkipSpace();
carrier = new Carrier(type, reader.Read(R.Text, "carrier sync ID").Value, 0, 0);
reader.SkipSpace();
if (!reader.Take(R.RightAngle))
{
throw new RantException(reader.Source, queryToken, "Expected '>' after carrier. (The carrier should be your last query argument!)");
}
break;
}