private IEnumerable <BfsNode> NextStates(BfsNode node)
{
return(node.Parser.AcceptableStructuralChars().Select(c =>
{
var newJson = new StructuralChar[node.Json.Length + 1];
node.Json.CopyTo(newJson, 0);
newJson[node.Json.Length] = c;
return new BfsNode
{
Json = newJson,
Parser = node.Parser.Read(c)
};
}));
}
public JsonParser Read(StructuralChar c)
{
if (_parsers.ContainsKey(c))
{
var parser = _parsers[c]();
AssignReturn(parser);
return(parser);
}
if (CanComplete && Return != null)
{
return(Return.Read(c));
}
throw new ArgumentException("Cannot read " + c);
}
public static string AllRenderings(StructuralChar structuralChar)
{
return(structuralChar switch
{
StructuralChar.Whitespace => " ",
StructuralChar.ArrayBegin => "[",
StructuralChar.ArrayEnd => "]",
StructuralChar.Comma => ",",
StructuralChar.LeadingNegative => "-",
StructuralChar.LeadingIntegerDigit => "123456789",
StructuralChar.FollowingIntegerDigit => "0123456789",
StructuralChar.DecimalSeparator => ".",
StructuralChar.ScientificNotationSeparator => "eE",
StructuralChar.ObjectBegin => "{",
StructuralChar.ObjectEnd => "}",
StructuralChar.KeyValueSeparator => ":",
StructuralChar.StringDelimiter => "\"",
StructuralChar.UnescapedStringBody => " !#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abcdefghijklmnopqrstuvwxyz{|}~",
StructuralChar.StringEscapeMarker => "\\",
StructuralChar.SingleEscapedChar => "\"\\/bfnrt",
StructuralChar.UnicodeEscapedChar => "0123456789abcdefABCDEF",
StructuralChar.UnicodeEscapeMarker => "u",
StructuralChar.OnlyZero => "0",
StructuralChar.NullOne => "n",
StructuralChar.NullTwo => "u",
StructuralChar.NullThree => "l",
StructuralChar.NullFour => "l",
StructuralChar.TrueOne => "t",
StructuralChar.TrueTwo => "r",
StructuralChar.TrueThree => "u",
StructuralChar.TrueFour => "e",
StructuralChar.FalseOne => "f",
StructuralChar.FalseTwo => "a",
StructuralChar.FalseThree => "l",
StructuralChar.FalseFour => "s",
StructuralChar.FalseFive => "e",
_ => throw new ArgumentException("Unknown structural char")
});
protected void NextChar(StructuralChar schar, Func <JsonParser> parser)
{
// var renderings = Structure.AllRenderings(schar);
// NextChar(renderings, parser);
_parsers[schar] = parser;
}
