;;; test-lr-basics-05.scm -- | |
;; | |
;;A grammar accepting a sequence of equal tokens of arbitrary length. | |
;;The return value is the list of values. | |
;; | |
(load "common-test.scm") | |
(define (doit . tokens) | |
(let ((parser (lalr-parser (expect: 0) | |
(A) | |
(e (e A) : (cons $2 $1) | |
(A) : (list $1) | |
() : 0)))) | |
(parser (make-lexer tokens) error-handler))) | |
(check | |
(doit) | |
=> 0) | |
(check | |
(doit (make-lexical-token 'A #f 1)) | |
=> '(1)) | |
(check | |
(doit (make-lexical-token 'A #f 1) | |
(make-lexical-token 'A #f 2)) | |
=> '(2 1)) | |
(check | |
(doit (make-lexical-token 'A #f 1) | |
(make-lexical-token 'A #f 2) | |
(make-lexical-token 'A #f 3)) | |
=> '(3 2 1)) | |
;;; end of file | |