blob: 7e4a79b48aff8a8b88afb387c1dfc519f8093d9c (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
|
(import (rename (macduffie json)
(json-null md:json-null))
(scheme case-lambda)
(srfi 1)
(srfi 2)
(srfi 69))
(begin
(define (json-object . pairs)
(alist->hash-table pairs))
(define json-list list)
(define json-null (md:json-null))
(define (json-object? obj)
(or (hash-table? obj)
(json-record? obj)))
(define json-list? list?)
;; json-null? already defined in macduffie json
(define (json-object-contains-key? obj key)
(or (and (hash-table? obj)
(hash-table-exists? obj key))
(and (json-record? obj)
(json-object-contains-key? (json-record->fields obj) key))))
(define string->json json-read-string)
(define (json->string j)
(json-write-string (json->typeless-json j)))
(define (json-object-ref j key)
(cond
((hash-table? j)
(if (hash-table-exists? j key)
(hash-table-ref j key)
((json-key-not-found))))
((json-record? j)
(json-object-ref (json-record->fields j) key))
(else ((json-key-not-found)))))
(define (json-object-set! obj key value)
(cond
((hash-table? obj)
(hash-table-set! obj key value)
obj)
((json-record? obj)
(or (and-let* ((pair (assoc key (json-record->mutators obj)))
(mutator (cdr pair)))
(mutator obj value)
obj)
(error "json-object-set!: no mutator for field" (json-record->name obj) key)))))
(define json-list-ref list-ref)
(define json-list-length length)
(define (json-object-map proc obj)
(let ((res (json-object)))
(hash-table-walk
obj
(lambda (key value)
(call-with-values (lambda () (proc key value))
(case-lambda
((key value) (hash-table-set! res key value))
(_ (error "json-object-map: proc did not return two values"))))))
res))
(define json-list-map map)
(define (json-object->alist obj)
(cond
((hash-table? obj) (hash-table->alist obj))
((json-record? obj) (json-object->alist (json->typeless-json obj)))
(else (error "json-object->alist: not an object" obj))))
(define json-list->list values))
|
