public WhiteSpace(LanguageDef def) : base( inp => { var simpleSpace = Tok.SimpleSpace(); if (String.IsNullOrEmpty(def.CommentLine) && String.IsNullOrEmpty(def.CommentStart)) { return(Prim.SkipMany( simpleSpace.Fail("") ).Parse(inp)); } else if (String.IsNullOrEmpty(def.CommentLine)) { return(Prim.SkipMany <Unit>( simpleSpace | Tok.MultiLineComment(def).Fail("") ).Parse(inp)); } else if (String.IsNullOrEmpty(def.CommentStart)) { return(Prim.SkipMany <Unit>( simpleSpace | Tok.OneLineComment(def).Fail("") ) .Parse(inp)); } else { return(Prim.SkipMany <Unit>( simpleSpace | Tok.OneLineComment(def) | Tok.MultiLineComment(def).Fail("") ) .Parse(inp)); } } ) { }