def p_path_expr_binary(p):
p[<NUM_LIT:0>] = ast.BinaryExpression(p[<NUM_LIT:1>], p[<NUM_LIT:2>], p[<NUM_LIT:3>])<EOL>
Expr : FilterExpr PATH_SEP RelativeLocationPath
     | FilterExpr ABBREV_PATH_SEP RelativeLocationPath