public object GetAttribute(string symbol, string name, object @default = null)
{
LexAttributeList l;
if (AttributeSets.TryGetValue(symbol, out l))
{
var i = l.IndexOf(name);
if (-1 < i)
{
return(l[i].Value);
}
}
return(@default);
}
public void WriteCSharpSymbolConstantsTo(TextWriter writer, string modifiers)
{
if (null == modifiers)
{
modifiers = "";
}
var names = new HashSet <string>();
writer.WriteLine(string.Concat("\t", modifiers, " const int EOS=", GetSymbolId("#EOS").ToString(), ";"));
names.Add("EOS");
writer.WriteLine(string.Concat("\t", modifiers, " const int ERROR=", GetSymbolId("#ERROR").ToString(), ";"));
names.Add("ERROR");
foreach (var sym in _EnumSymbols())
{
IDictionary <string, object> d;
object o;
if (AttributeSets.TryGetValue(sym, out d) && d.TryGetValue("hidden", out o) && o is bool && (bool)o)
{
continue;
}
if (AttributeSets.TryGetValue(sym, out d) && d.TryGetValue("collapse", out o) && o is bool && (bool)o)
{
continue;
}
var sid = Convert.ToString(sym);
if (_IsValidIdentifier(sid))
{
string s;
if (!string.IsNullOrEmpty(modifiers))
{
s = string.Concat("\t", modifiers, " const int ");
}
else
{
s = string.Concat("\t", modifiers, "const int ");
}
var id = GetSymbolId(sym);
s = string.Concat(s, CS.CreateEscapedIdentifier(sid.Replace('-', '_')), " = ");
s = _GetUniqueName(names, s);
names.Add(s);
s = string.Concat(s, id.ToString(), ";");
writer.WriteLine(s);
}
}
}
public Parser ToLL1Parser(IEnumerable <Token> tokenizer = null)
{
var parseTable = ToLL1ParseTable();
var syms = new List <string>();
FillSymbols(syms);
var nodeFlags = new int[syms.Count];
for (var i = 0; i < nodeFlags.Length; ++i)
{
var o = AttributeSets.GetAttribute(syms[i], "hidden", false);
if (o is bool && (bool)o)
{
nodeFlags[i] |= 2;
}
o = AttributeSets.GetAttribute(syms[i], "collapsed", false);
if (o is bool && (bool)o)
{
nodeFlags[i] |= 1;
}
}
var attrSets = new KeyValuePair <string, object> [syms.Count][];
for (var i = 0; i < attrSets.Length; i++)
{
AttributeSet attrs;
if (AttributeSets.TryGetValue(syms[i], out attrs))
{
attrSets[i] = new KeyValuePair <string, object> [attrs.Count];
var j = 0;
foreach (var attr in attrs)
{
attrSets[i][j] = new KeyValuePair <string, object>(attr.Key, attr.Value);
++j;
}
}
else
{
attrSets[i] = null; // new KeyValuePair<string, object>[0];
}
}
var initCfg = new int[] { GetIdOfSymbol(StartSymbol), FillNonTerminals().Count };
return(new LL1TableParser(parseTable.ToLL1Array(syms), initCfg, syms.ToArray(), nodeFlags, attrSets, tokenizer));
}