|
1 | 1 | package cm |
2 | 2 |
|
3 | 3 | import ( |
4 | | - "bytes" |
5 | | - "encoding/json" |
6 | 4 | "unsafe" |
7 | 5 | ) |
8 | 6 |
|
@@ -62,57 +60,3 @@ func (l list[T]) Data() *T { |
62 | 60 | func (l list[T]) Len() uintptr { |
63 | 61 | return l.len |
64 | 62 | } |
65 | | - |
66 | | -// MarshalJSON implements json.Marshaler. |
67 | | -func (l list[T]) MarshalJSON() ([]byte, error) { |
68 | | - if l.len == 0 { |
69 | | - return []byte("[]"), nil |
70 | | - } |
71 | | - |
72 | | - s := l.Slice() |
73 | | - var zero T |
74 | | - if unsafe.Sizeof(zero) == 1 { |
75 | | - // The default Go json.Encoder will marshal []byte as base64. |
76 | | - // We override that behavior so all int types have the same serialization format. |
77 | | - // []uint8{1,2,3} -> [1,2,3] |
78 | | - // []uint32{1,2,3} -> [1,2,3] |
79 | | - return json.Marshal(sliceOf(s)) |
80 | | - } |
81 | | - return json.Marshal(s) |
82 | | -} |
83 | | - |
84 | | -type slice[T any] []entry[T] |
85 | | - |
86 | | -func sliceOf[S ~[]E, E any](s S) slice[E] { |
87 | | - return *(*slice[E])(unsafe.Pointer(&s)) |
88 | | -} |
89 | | - |
90 | | -type entry[T any] [1]T |
91 | | - |
92 | | -func (v entry[T]) MarshalJSON() ([]byte, error) { |
93 | | - return json.Marshal(v[0]) |
94 | | -} |
95 | | - |
96 | | -// UnmarshalJSON implements json.Unmarshaler. |
97 | | -func (l *list[T]) UnmarshalJSON(data []byte) error { |
98 | | - if bytes.Equal(data, nullLiteral) { |
99 | | - return nil |
100 | | - } |
101 | | - |
102 | | - var s []T |
103 | | - err := json.Unmarshal(data, &s) |
104 | | - if err != nil { |
105 | | - return err |
106 | | - } |
107 | | - |
108 | | - l.data = unsafe.SliceData([]T(s)) |
109 | | - l.len = uintptr(len(s)) |
110 | | - |
111 | | - return nil |
112 | | -} |
113 | | - |
114 | | -// nullLiteral is the JSON representation of a null literal. |
115 | | -// By convention, to approximate the behavior of Unmarshal itself, |
116 | | -// Unmarshalers implement UnmarshalJSON([]byte("null")) as a no-op. |
117 | | -// See https://pkg.go.dev/encoding/json#Unmarshaler for more information. |
118 | | -var nullLiteral = []byte("null") |
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