private static bool DoMath(Interpreter interpreter, SourceReader reader, State state)
{
reader.Read(TokenType.LeftParen);
bool isStatement = reader.Take(TokenType.At);
var tokens = reader.ReadToScopeClose(TokenType.LeftParen, TokenType.RightParen, BracketPairs.All);
interpreter.PushState(State.CreateDerivedDistinct(reader.Source, tokens, interpreter));
state.AddPreBlueprint(new FunctionBlueprint(interpreter, _ =>
{
var v = Parser.Calculate(_, _.PopResultString());
if (!isStatement)
{
_.Print(_.FormatNumber(v));
}
return false;
}));
return true;
}
public bool Iterate(Interpreter ii, RepeaterBlueprint bp)
{
if (Finished)
{
ii.PopRepeater();
return false;
}
// Queue the next iteration on the current state
ii.CurrentState.AddPreBlueprint(bp);
// Push separator if applicable
if (!IsLast && _attribs.Separator != null && _attribs.Separator.Any())
{
var sepState = Interpreter.State.CreateDerivedDistinct(
ii.CurrentState.Reader.Source,
_attribs.Separator,
ii,
ii.CurrentState.Output);
// Make sure that the repeater is not available to the separator pattern
sepState.AddPreBlueprint(new RepeaterStackBlueprint(ii, this, RepeaterStackAction.Pop));
sepState.AddPostBlueprint(new RepeaterStackBlueprint(ii, this, RepeaterStackAction.Push));
ii.PushState(sepState);
}
// Push postfix if applicable
if (_attribs.After != null && _attribs.After.Any())
{
ii.PushState(Interpreter.State.CreateDerivedDistinct(
ii.CurrentState.Reader.Source,
_attribs.After,
ii,
ii.CurrentState.Output));
}
// Push next item
var itemState = Interpreter.State.CreateDerivedDistinct(ii.CurrentState.Reader.Source,
_items[_attribs.Sync != null ? _attribs.Sync.NextItem(_items.Length) : ii.RNG.Next(_items.Length)],
ii,
ii.CurrentState.Output);
// Add a blueprint that iterates the repeater just before reading the item. This makes sure that tags like [first] can run before this happens.
itemState.AddPostBlueprint(new FunctionBlueprint(ii, _ =>
{
Next();
return false;
}));
ii.PushState(itemState);
// Push prefix if applicable
if (_attribs.Before != null && _attribs.Before.Any())
{
ii.PushState(Interpreter.State.CreateDerivedDistinct(
ii.CurrentState.Reader.Source,
_attribs.Before,
ii,
ii.CurrentState.Output));
}
return true;
}
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 ManhoodException(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;
}
private static bool DoReplacer(Token<TokenType> name, Interpreter interpreter, SourceReader reader, State state)
{
reader.Read(TokenType.Colon);
var args = reader.ReadItemsToClosureTrimmed(TokenType.LeftSquare, TokenType.RightSquare, TokenType.Semicolon, BracketPairs.All).ToArray();
if (args.Length != 2) throw new ManhoodException(reader.Source, name, "Replacer expected 2 arguments, but got " + args.Length + ".");
state.AddPreBlueprint(new ReplacerBlueprint(interpreter, Util.ParseRegex(name.Value), args[1]));
interpreter.PushState(State.CreateDerivedDistinct(reader.Source, args[0], interpreter));
return true;
}
private static bool DoTag(Interpreter interpreter, SourceReader reader, State state)
{
reader.Read(TokenType.LeftSquare);
var name = reader.ReadToken();
// Check if metapattern
if (name.Identifier == TokenType.Question)
{
state.AddPreBlueprint(new MetapatternBlueprint(interpreter));
interpreter.PushState(State.CreateDerivedDistinct(reader.Source, reader.ReadToScopeClose(TokenType.LeftSquare, TokenType.RightSquare, BracketPairs.All), interpreter));
return true;
}
// Check if replacer
if (name.Identifier == TokenType.Regex)
{
return DoReplacer(name, interpreter, reader, state);
}
if (name.Identifier == TokenType.Dollar)
{
return reader.IsNext(TokenType.Text) ? DoSubCall(name, interpreter, reader, state) : DoSubDefinition(name, interpreter, reader, state);
}
if (!Util.ValidateName(name.Value.Trim()))
throw new ManhoodException(reader.Source, name, "Invalid tag name '" + name.Value + "'");
bool none = false;
if (!reader.Take(TokenType.Colon))
{
if (!reader.Take(TokenType.RightSquare))
throw new ManhoodException(reader.Source, name, "Expected ':' or ']' after tag name.");
none = true;
}
if (none)
{
state.AddPreBlueprint(new TagBlueprint(interpreter, reader.Source, name));
}
else
{
var items = reader.ReadItemsToClosureTrimmed(TokenType.LeftSquare, TokenType.RightSquare,
TokenType.Semicolon, BracketPairs.All).ToArray();
state.AddPreBlueprint(new TagBlueprint(interpreter, reader.Source, name, items));
}
return true;
}