private ConfigParseResult Parse()
{
var root = new ConfigClass("", null);
e = tokens.GetEnumerator();
while (e.MoveNext())
{
t = e.Current;
if (t.Type == BisTokenType.Term)
{
switch (t.Value.ToLower())
{
case @class:
var c = ParseClass();
if (c != null)
{
root.AddSubclass(c);
}
break;
case @enum:
ParseEnum();
break;
}
continue;
}
errors.Add(string.Format("Expected 'class' or 'enum' at {0}, Line={1}, Column={2}", t.File, t.BeginLine, t.BeginPos + 1));
}
return(new ConfigParseResult(new ConfigFile(root, enums), errors));
}
private ConfigClass ParseClass()
{
if (!Expect(BisTokenType.Term, @class))
{
return(null);
}
var name = ParseName();
if (name == null)
{
return(null);
}
string baseName = null;
if (!Next())
{
return(null);
}
if (t.Type == BisTokenType.Semicolon) //External
{
return(new ConfigClass(name));
}
if (t.Type == BisTokenType.Colon) //inheritance
{
baseName = ParseName();
if (!Next())
{
return(null);
}
}
var c = new ConfigClass(name, baseName);
if (!Expect(BisTokenType.LCurly, "{"))
{
return(null);
}
while (true)
{
if (!Next())
{
return(null);
}
switch (t.Value.ToLower())
{
case "}": break;
case @class:
var sc = ParseClass();
if (sc != null)
{
c.AddSubclass(sc);
}
break;
case @delete:
var del = ParseName();
if (del == null)
{
continue;
}
c.AddDelete(del);
break;
default:
var propName = ReadIdentifier();
if (propName == null)
{
continue;
}
if (!Next())
{
return(null);
}
if (t.Type == BisTokenType.LSquare)
{
if (!ExpectNext(BisTokenType.RSquare, "]"))
{
continue;
}
if (!Next())
{
return(null);
}
propName += "[]";
}
Expect(BisTokenType.Operator, "=");
var propValue = ParseConfigPropertyValue(propName);
if (propValue == null)
{
continue;
}
c.AddProperty(propValue);
break;
}
if (t.Type == BisTokenType.RCurly)
{
break;
}
}
if (!Expect(BisTokenType.RCurly, "}"))
{
return(null);
}
ExpectNext(BisTokenType.Semicolon, ";");
return(c);
}