wasm-tools 1.248.0

CLI tools for interoperating with WebAssembly files
Documentation 
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
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139

;; RUN: wast --assert default --snapshot tests/snapshots % -f cm-values

(component
  (import "one" (func))

  (import "two" (value $v string))
  (import "three" (instance
    (export "four" (instance
      (export "five" (core module
        (import "six" "a" (func))
        (import "six" "b" (func))
      ))
    ))
  ))

  (export "four" (value $v))
  ;; ...
)

(component
  (component
    (import "a" (instance $foo (export "v" (value s32))))
    (export "v" (value $foo "v"))
  )
)

(assert_invalid
  (component (export "" (value 0)))
  "index out of bounds")

(component
  (component
    (import "d" (value $v string))
    (export "i" (value $v))
  )
)

(assert_invalid
  (component
    (import "a" (value $v string))
    (export "b" (value $v))
    (export "c" (value $v))
  )
  "cannot be used more than once")

(assert_invalid
  (component
    (import "a" (value string))
  )
  "value index 0 was not used as part of an instantiation, start function, or export")

(component
  (component
    (import "a" (value string))
    (export "b" (value 0))
  )
)

(component
  (component
    (import "a" (value $i string))
    (import "b" (component $c (import "a" (value string))))
    (instance (instantiate $c (with "a" (value $i))))
  )
)

(component definition
  (type $t string)
  (import "a" (value (type $t)))
  (component $c (import "a" (value string)) (export "b" (value 0)))
  (instance (instantiate $c (with "a" (value 0))))
)

(component
  (component
    (import "a" (component $c
      (import "e" (value string))
    ))
    (import "f" (value $v string))

    (instance
      (instantiate $c
        (with "e" (value $v))
      )
    )
  )
)

(assert_invalid
  (component (instance $i (export "" (value 0))))
  "index out of bounds")

(assert_invalid
  (component
    (component $c)
    (instance (instantiate $c
      (with "" (value 0))
    ))
  )
  "index out of bounds")

(component
  (component
    (import "e" (value $v string))
    (instance
      (export "e" (value $v))
    )
  )
)

(component
  (import "name" (value $name string))
  (import "libc" (core module $Libc
    (export "memory" (memory 1))
    (export "realloc" (func (param i32 i32 i32 i32) (result i32)))
    (export "free" (func (param i32 i32 i32)))
    (export "canonical_abi_realloc" (func (param i32 i32 i32 i32) (result i32)))
  ))
  (core instance $libc (instantiate $Libc))
  (core module $Main
    (import "libc" "memory" (memory 1))
    (func (export "start") (param i32 i32) (result i32)
      ;;... general-purpose compute
      unreachable
    )
    (func (export "start-post-return") (param i32))
  )
  (core instance $main (instantiate $Main (with "libc" (instance $libc))))
  (alias core export $main "start" (core func $main_func))
  (func $start (param "p1" string) (result string)
    (canon lift (core func $main_func)
      (memory $libc "memory")
      (realloc (func $libc "canonical_abi_realloc"))
      (post-return (func $main "start-post-return"))
    )
  )
  (start $start (value $name) (result (value $greeting)))
  (export "greeting" (value $greeting))
)