/// <summary>
/// Queries the vocabulary according to the specified criteria and returns a random match.
/// </summary>
/// <param name="rng">The random number generator to randomize the match with.</param>
/// <param name="query">The search criteria to use.</param>
/// <returns></returns>
public string Query(RNG rng, Query query)
{
Dictionary wordList;
return !_wordLists.TryGetValue(query.Name, out wordList)
? "MISSINGDIC"
: wordList.Query(rng, query);
}
public Synchronizer(SyncType type, long seed)
{
_type = type;
_rng = new RNG(seed);
_index = 0;
_state = null;
_pinned = false;
}
/// <summary>
/// Executes the specified source using a custom random number generator and returns the resulting output.
/// </summary>
/// <param name="input">The source to execute.</param>
/// <param name="rng">The random number generator to use when generating output.</param>
/// <param name="charLimit">The maximum number of characters that can be printed. An exception will be thrown if the limit is exceeded. Set to zero or below for unlimited characters.</param>
/// <returns></returns>
public Output Do(Source input, RNG rng, int charLimit = 0)
{
return new Interpreter(this, input, rng, charLimit).Run();
}
/// <summary>
/// Loads the file located at the specified path and executes it using a custom seed, returning the resulting output.
/// </summary>
/// <param name="path">The path to the file to execute.</param>
/// <param name="rng">The random number generator to use when generating output.</param>
/// <param name="charLimit">The maximum number of characters that can be printed. An exception will be thrown if the limit is exceeded. Set to zero or below for unlimited characters.</param>
/// <returns></returns>
public Output DoFile(string path, RNG rng, int charLimit = 0)
{
return new Interpreter(this, Source.FromFile(path), rng, charLimit).Run();
}
/// <summary>
/// Executes the specified string using a custom random number generator and returns the resulting output.
/// </summary>
/// <param name="input">The input string to execute.</param>
/// <param name="rng">The random number generator to use when generating output.</param>
/// <param name="charLimit">The maximum number of characters that can be printed. An exception will be thrown if the limit is exceeded. Set to zero or below for unlimited characters.</param>
/// <returns></returns>
public Output Do(string input, RNG rng, int charLimit = 0)
{
return new Interpreter(this, Source.FromString(input), rng, charLimit).Run();
}
public static string Unescape(string sequence, RNG rng = null)
{
var match = Lexer.EscapeRegex.Match(sequence);
var count = Int32.Parse(Alt(match.Groups["count"].Value, "1"));
bool unicode = match.Groups["unicode"].Success;
var code = Alt(match.Groups["code"].Value, match.Groups["unicode"].Value);
var sb = new StringBuilder();
if (unicode)
{
sb.Append((char)Convert.ToUInt16(code, 16), count);
}
else if (code[0] == 'N') // The only escape sequence that returns more than 1 character without a quantifier
{
for (int i = 0; i < count; i++)
sb.Append(Environment.NewLine);
}
else
{
Func<RNG, char> func;
if (_escapeChars.TryGetValue(code[0], out func))
{
for (int i = 0; i < count; i++)
sb.Append(func(rng));
}
else
{
for (int i = 0; i < count; i++)
sb.Append(code[0]);
}
}
return sb.ToString();
}
internal string Query(RNG rng, Query query)
{
var index = String.IsNullOrEmpty(query.Subtype) ? 0 : GetSubtypeIndex(query.Subtype);
if (index == -1)
{
return "BAD_SUBTYPE";
}
IEnumerable<DictionaryEntry> pool = _words;
pool = query.Exclusive
? pool.Where(e => e.Classes.Any() && e.Classes.All(c => query.ClassFilters.Any(set => set.Any(t => t.Item2 == c))))
: pool.Where(e => query.ClassFilters.All(set => set.Any(t => t.Item1 == (e.Classes.Contains(t.Item2)))));
pool = query.RegexFilters.Aggregate(pool, (current, regex) => current.Where(e => regex.Item1 == regex.Item2.IsMatch(e.Values[index])));
if (!pool.Any())
{
return "NOT_FOUND";
}
int number = String.IsNullOrEmpty(query.Carrier) ? rng.Next(pool.Sum(e => e.Weight)) + 1
: rng.PeekAt(query.Carrier.Hash(), pool.Sum(e => e.Weight));
foreach (var e in pool)
{
if (number <= e.Weight) return e.Values[index];
number -= e.Weight;
}
return "NOT_FOUND";
}
public Interpreter(Engine engine, Source input, RNG rng, int limitChars = 0)
{
_mainSource = input;
_rng = rng;
_engine = engine;
_charLimit = new Limit<int>(0, limitChars, (a, b) => a + b, (a, b) => b == 0 || a <= b);
_output = new ChannelStack(_charLimit);
_mainState = State.Create(input, this);
}