static IList <_LexRule> _ParseRules(TextReader inp)
{
var result = new List <_LexRule>();
var pc = LexContext.CreateFrom(inp);
pc.EnsureStarted();
while (-1 != pc.Current)
{
pc.TrySkipCCommentsAndWhiteSpace();
if (-1 == pc.Current)
{
break;
}
pc.ClearCapture();
var l = pc.Line;
var c = pc.Column;
var p = pc.Position;
var rule = new _LexRule();
rule.Line = l;
rule.Column = c;
rule.Position = p;
if (!pc.TryReadCIdentifier())
{
throw new ExpectingException(string.Format("Identifier expected at line {0}, column {1}, position {2}", l, c, p), l, c, p, "identifier");
}
rule.Symbol = pc.GetCapture();
rule.Id = int.MinValue;
pc.ClearCapture();
pc.TrySkipCCommentsAndWhiteSpace();
pc.Expecting('<', '=', '{');
if ('<' == pc.Current)
{
pc.Advance();
pc.Expecting();
var attrs = new List <KeyValuePair <string, object> >();
while (-1 != pc.Current && '>' != pc.Current)
{
pc.TrySkipCCommentsAndWhiteSpace();
pc.ClearCapture();
l = pc.Line;
c = pc.Column;
p = pc.Position;
if (!pc.TryReadCIdentifier())
{
throw new ExpectingException(string.Format("Identifier expected at line {0}, column {1}, position {2}", l, c, p), l, c, p, "identifier");
}
var aname = pc.GetCapture();
pc.TrySkipCCommentsAndWhiteSpace();
pc.Expecting('=', '>', ',');
if ('=' == pc.Current)
{
pc.Advance();
pc.TrySkipCCommentsAndWhiteSpace();
l = pc.Line;
c = pc.Column;
p = pc.Position;
var value = pc.ParseJsonValue();
attrs.Add(new KeyValuePair <string, object>(aname, value));
if (0 == string.Compare("id", aname) && (value is double))
{
rule.Id = (int)((double)value);
if (0 > rule.Id)
{
throw new ExpectingException(string.Format("Expecting a non-negative integer at line {0}, column {1}, position {2}", l, c, p), l, c, p, "nonNegativeInteger");
}
}
}
else
{ // boolean true
attrs.Add(new KeyValuePair <string, object>(aname, true));
}
pc.TrySkipCCommentsAndWhiteSpace();
pc.Expecting(',', '>');
if (',' == pc.Current)
{
pc.Advance();
}
}
pc.Expecting('>');
pc.Advance();
rule.Attributes = attrs.ToArray();
pc.TrySkipCCommentsAndWhiteSpace();
}
pc.Expecting('=', '{');
var isAsm = '{' == pc.Current;
pc.Advance();
if (!isAsm)
{
pc.TrySkipCCommentsAndWhiteSpace();
pc.Expecting('\'', '\"');
if ('\'' == pc.Current)
{
pc.Advance();
pc.ClearCapture();
pc.TryReadUntil('\'', '\\', false);
pc.Expecting('\'');
var pc2 = LexContext.Create(pc.GetCapture());
pc2.EnsureStarted();
pc2.SetLocation(pc.Line, pc.Column, pc.Position, pc.FileOrUrl);
rule.Regex = pc.GetCapture();
pc.Advance();
}
else
{
var str = pc.ParseJsonString();
rule.Literal = str;
}
}
else
{
var ll = pc.CaptureBuffer.Length;
rule.Part = Lex.Assemble(pc);
pc.Expecting('}');
pc.Advance();
}
result.Add(rule);
}
if (0 == result.Count)
{
throw new ExpectingException("Expecting lexer rules, but the document was empty", 0, 0, 0, "rule");
}
return(result);
}
