-
Notifications
You must be signed in to change notification settings - Fork 0
/
mapvalue.go
69 lines (58 loc) · 1.72 KB
/
mapvalue.go
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
// Copyright © 2018 Xavier Basty <xbasty@gmail.com>
//
// 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.
package values
import (
"fmt"
"github.com/xav/go-script/vm"
)
type Map interface {
Len(*vm.Thread) int64
Elem(t *vm.Thread, key interface{}) vm.Value // Retrieve an element from the map, returning nil if it does not exist.
SetElem(t *vm.Thread, key interface{}, val vm.Value) // Set an entry in the map. If val is nil, delete the entry.
Iter(func(key interface{}, val vm.Value) bool) // TODO: Perhaps there should be an iterator interface instead.
}
type MapValue interface {
vm.Value
Get(*vm.Thread) Map
Set(*vm.Thread, Map)
}
// map /////////////////////////////////////////////////////////////////////////
type MapV struct {
Target Map
}
func (v *MapV) String() string {
if v.Target == nil {
return "<nil>"
}
res := "map["
i := 0
v.Target.Iter(func(key interface{}, val vm.Value) bool {
if i > 0 {
res += ", "
}
i++
res += fmt.Sprint(key) + ":" + val.String()
return true
})
return res + "]"
}
func (v *MapV) Assign(t *vm.Thread, o vm.Value) {
v.Target = o.(MapValue).Get(t)
}
func (v *MapV) Get(*vm.Thread) Map {
return v.Target
}
func (v *MapV) Set(t *vm.Thread, x Map) {
v.Target = x
}