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
|
/* Copyright 2021 Mozilla Foundation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
// ./test/core/br_on_null.wast
// ./test/core/br_on_null.wast:1
let $0 = instantiate(`(module
(type $$t (func (result i32)))
(func $$nn (param $$r (ref $$t)) (result i32)
(block $$l
(return (call_ref $$t (br_on_null $$l (local.get $$r))))
)
(i32.const -1)
)
(func $$n (param $$r (ref null $$t)) (result i32)
(block $$l
(return (call_ref $$t (br_on_null $$l (local.get $$r))))
)
(i32.const -1)
)
(elem func $$f)
(func $$f (result i32) (i32.const 7))
(func (export "nullable-null") (result i32) (call $$n (ref.null $$t)))
(func (export "nonnullable-f") (result i32) (call $$nn (ref.func $$f)))
(func (export "nullable-f") (result i32) (call $$n (ref.func $$f)))
(func (export "unreachable") (result i32)
(block $$l
(return (call_ref $$t (br_on_null $$l (unreachable))))
)
(i32.const -1)
)
)`);
// ./test/core/br_on_null.wast:32
assert_trap(() => invoke($0, `unreachable`, []), `unreachable`);
// ./test/core/br_on_null.wast:34
assert_return(() => invoke($0, `nullable-null`, []), [value("i32", -1)]);
// ./test/core/br_on_null.wast:35
assert_return(() => invoke($0, `nonnullable-f`, []), [value("i32", 7)]);
// ./test/core/br_on_null.wast:36
assert_return(() => invoke($0, `nullable-f`, []), [value("i32", 7)]);
// ./test/core/br_on_null.wast:38
let $1 = instantiate(`(module
(type $$t (func))
(func (param $$r (ref null $$t)) (drop (br_on_null 0 (local.get $$r))))
(func (param $$r (ref null func)) (drop (br_on_null 0 (local.get $$r))))
(func (param $$r (ref null extern)) (drop (br_on_null 0 (local.get $$r))))
)`);
// ./test/core/br_on_null.wast:46
let $2 = instantiate(`(module
(type $$t (func (param i32) (result i32)))
(elem func $$f)
(func $$f (param i32) (result i32) (i32.mul (local.get 0) (local.get 0)))
(func $$a (param $$n i32) (param $$r (ref null $$t)) (result i32)
(block $$l (result i32)
(return (call_ref $$t (br_on_null $$l (local.get $$n) (local.get $$r))))
)
)
(func (export "args-null") (param $$n i32) (result i32)
(call $$a (local.get $$n) (ref.null $$t))
)
(func (export "args-f") (param $$n i32) (result i32)
(call $$a (local.get $$n) (ref.func $$f))
)
)`);
// ./test/core/br_on_null.wast:65
assert_return(() => invoke($2, `args-null`, [3]), [value("i32", 3)]);
// ./test/core/br_on_null.wast:66
assert_return(() => invoke($2, `args-f`, [3]), [value("i32", 9)]);
|
