public JsonGrammar()
: base("json")
{
EnableMatchEvents = false;
CaseSensitive = true;
// terminals
var jstring = new StringParser { AllowEscapeCharacters = true, Name = "string" };
var jnumber = new NumberParser { AllowExponent = true, AllowSign = true, AllowDecimal = true, Name = "number" };
var jboolean = new BooleanTerminal { Name = "bool", TrueValues = new string[] { "true" }, FalseValues = new string[] { "false" }, CaseSensitive = false };
var jname = new StringParser { AllowEscapeCharacters = true, Name = "name" };
var jnull = new LiteralTerminal { Value = "null", Name = "null", CaseSensitive = false };
var ws = new RepeatCharTerminal(char.IsWhiteSpace);
var commaDelimiter = new RepeatCharTerminal(new RepeatCharItem(char.IsWhiteSpace), ',', new RepeatCharItem(char.IsWhiteSpace));
// nonterminals (things we're interested in getting back)
var jobject = new SequenceParser { Name = "object" };
var jarray = new SequenceParser { Name = "array" };
var jprop = new SequenceParser { Name = "property" };
// rules
var jvalue = jstring | jnumber | jobject | jarray | jboolean | jnull;
jobject.Add("{", (-jprop).SeparatedBy(commaDelimiter), "}");
jprop.Add(jname, ":", jvalue);
jarray.Add("[", (-jvalue).SeparatedBy(commaDelimiter), "]");
// separate sequence and repeating parsers by whitespace
jvalue.SeparateChildrenBy(ws, false);
// allow whitespace before and after the initial object or array
this.Inner = ws & (jobject | jarray) & ws;
}
protected RepeatCharTerminal(RepeatCharTerminal other, ParserCloneArgs args)
: base(other, args)
{
_items = new List<RepeatCharItem>(other._items.Select(r => (RepeatCharItem)r.Clone()));
}
protected RepeatCharTerminal(RepeatCharTerminal other, ParserCloneArgs args)
: base(other, args)
{
_items = new List <RepeatCharItem>(other._items.Select(r => (RepeatCharItem)r.Clone()));
}