fixed bug with standalone lexer documents not being able to be genera…

…ted to code

common/GlobalAssemblyInfo.cs

@@ -14,5 +14,5 @@
 // You can specify all the values or you can default the Build and Revision Numbers
 // by using the '*' as shown below:
 // [assembly: AssemblyVersion("1.0.*")]
-[assembly: AssemblyVersion("0.0.1.12")]
-[assembly: AssemblyFileVersion("0.0.1.12")]
+[assembly: AssemblyVersion("0.0.1.13")]
+[assembly: AssemblyFileVersion("0.0.1.13")]

pckw/TokenizerCodeGenerator.cs

@@ -98,6 +98,16 @@ public static void WriteClassTo(LexDocument lex, IList<string> symbolTable, stri
 			if (string.IsNullOrEmpty(language))
 				language = "cs";
 			var cdp = CodeDomProvider.CreateProvider(language);
+			if(2==symbolTable.Count && "#EOS"== symbolTable[0] && "#ERROR"==symbolTable[1])
+			{
+				// this is a lex document and the cfg was a dummy so we don't use it.
+				// build the symbol table from the LexDocument
+				symbolTable = new List<string>();
+				foreach(var rule in lex.Rules)
+					symbolTable.Add(rule.Left);
+				symbolTable.Add("#EOS");
+				symbolTable.Add("#ERROR");
+			}
 			var tokenizer = _CreateTokenizerClass(lex, symbolTable, name,progress);
 			var opts = new CodeGeneratorOptions();
 			opts.BlankLinesBetweenMembers = false;

scratch/xbnf.xbnf

@@ -61,11 +61,10 @@ lineComment<hidden>= '//[^\n]*[\n]';
 blockComment<hidden,blockEnd="*/">= "/*";
 
 // defining these isn't required, but gives
-// us better constant names and an opportunity to 
-// remove them from the tree.
+// us better constant names 
 //
 // double quotes denote a literal. the escapes are nearly the
-// same as C#. \U and \x are not supported
+// same as C#. \U and \x are not supported but \u is
 or="|";
 lt="<";
 gt=">";

xbnf/XbnfDocument.cs

@@ -83,9 +83,11 @@ public IList<XbnfMessage> TryValidate(IList<XbnfMessage> result = null)
 						o = prod.Attributes[i].Value;
 						isHidden = (o is bool && (bool)o);
 					}
-					if (!isHidden && !Equals(rc.Key, StartProduction.Name))
-						result.Add(new XbnfMessage(ErrorLevel.Warning, -1, string.Concat("Unreferenced production \"", prod.Name, "\""),
-							prod.Line, prod.Column, prod.Position, Filename));
+					var sp = StartProduction;
+					if(null!=sp)
+						if (!isHidden && !Equals(rc.Key, sp.Name))
+							result.Add(new XbnfMessage(ErrorLevel.Warning, -1, string.Concat("Unreferenced production \"", prod.Name, "\""),
+								prod.Line, prod.Column, prod.Position, Filename));
 				}
 			}
 			return result;