HCoop / bpt / guile.git / blame
| Commit | Line | Data |
|---|---|---|
| 1b101522 LC |
1 | ;;; test-lr-associativity-04.scm -- |
| 2 | ;; | |
| 3 | ;;Show how to use associativity. | |
| 4 | ;; | |
| 5 | ||
| 6 | (load "common-test.scm") | |
| 7 | ||
| 8 | (define (doit . tokens) | |
| 9 | (let ((parser (lalr-parser | |
| 10 | (expect: 0) | |
| 11 | (N (left: A) | |
| 12 | (left: M)) | |
| 13 | (E (N) : $1 | |
| 14 | ||
| 15 | (E A E) : (list $1 $2 $3) | |
| 16 | (E A E A E) : (list (list $1 $2 $3) $4 $5) | |
| 17 | ||
| 18 | (E M E) : (list $1 $2 $3) | |
| 19 | (E M E M E) : (list $1 $2 (list $3 $4 $5)) | |
| 20 | ||
| 21 | (E A E M E) : (list $1 $2 $3 $4 $5) | |
| 22 | (E M E A E) : (list $1 $2 $3 $4 $5) | |
| 23 | )))) | |
| 24 | (parser (make-lexer tokens) error-handler))) | |
| 25 | ||
| 26 | ;;; -------------------------------------------------------------------- | |
| 27 | ;;; Single operator. | |
| 28 | ||
| 29 | (check | |
| 30 | (doit (make-lexical-token 'N #f 1)) | |
| 31 | => 1) | |
| 32 | ||
| 33 | (check | |
| 34 | (doit (make-lexical-token 'N #f 1) | |
| 35 | (make-lexical-token 'A #f '+) | |
| 36 | (make-lexical-token 'N #f 2)) | |
| 37 | => '(1 + 2)) | |
| 38 | ||
| 39 | (check | |
| 40 | (doit (make-lexical-token 'N #f 1) | |
| 41 | (make-lexical-token 'M #f '*) | |
| 42 | (make-lexical-token 'N #f 2)) | |
| 43 | => '(1 * 2)) | |
| 44 | ||
| 45 | ;;; -------------------------------------------------------------------- | |
| 46 | ;;; Precedence. | |
| 47 | ||
| 48 | (check | |
| 49 | (doit (make-lexical-token 'N #f 1) | |
| 50 | (make-lexical-token 'A #f '+) | |
| 51 | (make-lexical-token 'N #f 2) | |
| 52 | (make-lexical-token 'M #f '*) | |
| 53 | (make-lexical-token 'N #f 3)) | |
| 54 | => '(1 + (2 * 3))) | |
| 55 | ||
| 56 | (check | |
| 57 | (doit (make-lexical-token 'N #f 1) | |
| 58 | (make-lexical-token 'M #f '*) | |
| 59 | (make-lexical-token 'N #f 2) | |
| 60 | (make-lexical-token 'A #f '+) | |
| 61 | (make-lexical-token 'N #f 3)) | |
| 62 | => '((1 * 2) + 3)) | |
| 63 | ||
| 64 | ;;; -------------------------------------------------------------------- | |
| 65 | ;;; Associativity. | |
| 66 | ||
| 67 | (check | |
| 68 | (doit (make-lexical-token 'N #f 1) | |
| 69 | (make-lexical-token 'A #f '+) | |
| 70 | (make-lexical-token 'N #f 2) | |
| 71 | (make-lexical-token 'A #f '+) | |
| 72 | (make-lexical-token 'N #f 3)) | |
| 73 | => '((1 + 2) + 3)) | |
| 74 | ||
| 75 | (check | |
| 76 | (doit (make-lexical-token 'N #f 1) | |
| 77 | (make-lexical-token 'M #f '*) | |
| 78 | (make-lexical-token 'N #f 2) | |
| 79 | (make-lexical-token 'M #f '*) | |
| 80 | (make-lexical-token 'N #f 3)) | |
| 81 | => '((1 * 2) * 3)) | |
| 82 | ||
| 83 | ;;; end of file |