public AstNode TestParse(String t)
{
Console.WriteLine(t);
var itr = new Ancora.StringIterator(t); // Todo: Unify iterator types
var r = Root.Parse(itr);
if (r.ResultType == Ancora.ResultType.Success && !r.StreamState.AtEnd && r.FailReason == null)
{
Console.WriteLine("Did not consume all input.");
}
if (r.ResultType == Ancora.ResultType.Success && r.StreamState.AtEnd)
{
Console.WriteLine("Parsed.");
EmitAst(r.Node);
}
else
{
Console.WriteLine("Failed.");
if (r.FailReason != null)
{
Console.WriteLine(r.FailReason.Message);
}
else
{
Console.WriteLine("No fail reason specified.");
}
}
return(r.Node);
}
public ParseResult Parse(StringIterator InputStream)
{
var r = ImplementParse(InputStream);
if (r.ResultType == ResultType.Success)
{
r.Node = AstMutator(r.Node);
}
return(r);
}
public static int RollDice(String Dice)
{
var itr = new Ancora.StringIterator(Dice);
var r = DiceGrammar.Root.Parse(itr);
if (r.ResultType == Ancora.ResultType.Success)
{
return(DiceGrammar.CalculateDieRoll(r.Node, Core.Random));
}
else
{
return(1);
}
}
public ParseResult Parse(StringIterator InputStream)
{
if ((Flags & ParserFlags.IGNORE_LEADING_WHITESPACE) == ParserFlags.IGNORE_LEADING_WHITESPACE)
{
InputStream = Parser.WhitespaceParser.Parse(InputStream).StreamState;
}
var r = ImplementParse(InputStream);
if (r.ResultType == ResultType.Success && (Flags & ParserFlags.IGNORE_TRAILING_WHITESPACE) == ParserFlags.IGNORE_TRAILING_WHITESPACE)
{
r.StreamState = Parser.WhitespaceParser.Parse(r.StreamState).StreamState;
}
return(r);
}
public static string CollapseEscapeSequences(string value)
{
var r = "";
var itr = new StringIterator(value);
bool escaping = false;
while (!itr.AtEnd)
{
if (escaping)
{
if (itr.Next == 'n')
{
r += '\n';
}
else if (itr.Next == 'r')
{
r += '\r';
}
else if (itr.Next == 't')
{
r += '\t';
}
else
{
r += itr.Next;
}
itr = itr.Advance();
escaping = false;
}
else if (itr.Next == '\\')
{
escaping = true;
itr = itr.Advance();
}
else
{
r += itr.Next;
itr = itr.Advance();
}
}
return(r);
}
protected abstract ParseResult ImplementParse(StringIterator InputStream);
public static ParseResult ParseString(Parser Root, String S)
{
var iter = new StringIterator(S);
return(Root.Parse(iter));
}