Commit | Line | Data |
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1b101522 LC |
1 | ;;; test-lr-script-expression.scm -- |
2 | ;; | |
3 | ;;Parse scripts, each line an expression. | |
4 | ;; | |
5 | ||
6 | (load "common-test.scm") | |
7 | ||
8 | (define (doit . tokens) | |
9 | (let ((parser (lalr-parser (expect: 0) | |
10 | (driver: glr) | |
11 | (N O C T (left: A) (left: M) (nonassoc: U)) | |
12 | ||
13 | (script (lines) : (reverse $1)) | |
14 | ||
15 | (lines (lines line) : (cons $2 $1) | |
16 | (line) : (list $1)) | |
17 | ||
18 | (line (T) : #\newline | |
19 | (E T) : $1 | |
20 | (error T) : (list 'error-clause $2)) | |
21 | ||
22 | (E (N) : $1 | |
23 | (E A E) : ($2 $1 $3) | |
24 | (E M E) : ($2 $1 $3) | |
25 | (A E (prec: U)) : ($1 $2) | |
26 | (O E C) : $2)))) | |
27 | (parser (make-lexer tokens) error-handler))) | |
28 | ||
29 | ;;; -------------------------------------------------------------------- | |
30 | ;;; Correct input | |
31 | ||
32 | (check | |
33 | (doit (make-lexical-token 'T #f #\newline)) | |
34 | => '((#\newline))) | |
35 | ||
36 | (check | |
37 | (doit (make-lexical-token 'N #f 1) | |
38 | (make-lexical-token 'T #f #\newline)) | |
39 | => '((1))) | |
40 | ||
41 | (check | |
42 | (doit (make-lexical-token 'N #f 1) | |
43 | (make-lexical-token 'A #f +) | |
44 | (make-lexical-token 'N #f 2) | |
45 | (make-lexical-token 'T #f #\newline)) | |
46 | => '((3))) | |
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 | (make-lexical-token 'T #f #\newline)) | |
55 | => '((9) (7))) | |
56 | ||
57 | (check | |
58 | (doit (make-lexical-token 'N #f 10) | |
59 | (make-lexical-token 'M #f *) | |
60 | (make-lexical-token 'N #f 2) | |
61 | (make-lexical-token 'A #f +) | |
62 | (make-lexical-token 'N #f 3) | |
63 | (make-lexical-token 'T #f #\newline)) | |
64 | => '((23))) | |
65 | ||
66 | (check | |
67 | (doit (make-lexical-token 'O #f #\() | |
68 | (make-lexical-token 'N #f 1) | |
69 | (make-lexical-token 'A #f +) | |
70 | (make-lexical-token 'N #f 2) | |
71 | (make-lexical-token 'C #f #\)) | |
72 | (make-lexical-token 'M #f *) | |
73 | (make-lexical-token 'N #f 3) | |
74 | (make-lexical-token 'T #f #\newline)) | |
75 | => '((9))) | |
76 | ||
77 | (check | |
78 | (doit (make-lexical-token 'O #f #\() | |
79 | (make-lexical-token 'N #f 1) | |
80 | (make-lexical-token 'A #f +) | |
81 | (make-lexical-token 'N #f 2) | |
82 | (make-lexical-token 'C #f #\)) | |
83 | (make-lexical-token 'M #f *) | |
84 | (make-lexical-token 'N #f 3) | |
85 | (make-lexical-token 'T #f #\newline) | |
86 | ||
87 | (make-lexical-token 'N #f 4) | |
88 | (make-lexical-token 'M #f /) | |
89 | (make-lexical-token 'N #f 5) | |
90 | (make-lexical-token 'T #f #\newline)) | |
91 | => '((9 4/5))) | |
92 | ||
93 | ;;; -------------------------------------------------------------------- | |
94 | ||
95 | (check | |
96 | ;;Successful error recovery. | |
97 | (doit (make-lexical-token 'O #f #\() | |
98 | (make-lexical-token 'N #f 1) | |
99 | (make-lexical-token 'A #f +) | |
100 | (make-lexical-token 'N #f 2) | |
101 | (make-lexical-token 'M #f *) | |
102 | (make-lexical-token 'N #f 3) | |
103 | (make-lexical-token 'T #f #\newline) | |
104 | ||
105 | (make-lexical-token 'N #f 4) | |
106 | (make-lexical-token 'M #f /) | |
107 | (make-lexical-token 'N #f 5) | |
108 | (make-lexical-token 'T #f #\newline)) | |
109 | => '()) | |
110 | ||
111 | (check | |
112 | ;;Unexpected end of input. | |
113 | (doit (make-lexical-token 'N #f 1) | |
114 | (make-lexical-token 'A #f +) | |
115 | (make-lexical-token 'N #f 2)) | |
116 | => '()) | |
117 | ||
118 | (check | |
119 | ;;Unexpected end of input. | |
120 | (doit (make-lexical-token 'N #f 1) | |
121 | (make-lexical-token 'A #f +) | |
122 | (make-lexical-token 'T #f #\newline)) | |
123 | => '()) | |
124 | ||
125 | ;;; end of file |