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rbtreemap_json.go
146 lines (116 loc) · 2.39 KB
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rbtreemap_json.go
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package container
import (
"encoding/json"
"errors"
"reflect"
its "github.com/wrmsr/bane/core/iterators"
ju "github.com/wrmsr/bane/core/json"
rfl "github.com/wrmsr/bane/core/reflect"
bt "github.com/wrmsr/bane/core/types"
)
//
func (m RbTreeMap[K, V]) MarshalJSON() ([]byte, error) {
if m.Len() < 1 {
return ju.EmptyObjectBytes(), nil
}
if ju.CanMarshalAsText(rfl.TypeOf[K]()) {
o := make(ju.RawObject, m.Len())
i := 0
var err error
m.ForEach(func(kv bt.Kv[K, V]) bool {
var ks string
ks, err = ju.MarshalAsText(reflect.ValueOf(kv.K))
if err != nil {
return false
}
var vb []byte
vb, err = json.Marshal(kv.V)
if err != nil {
return false
}
o[i] = ju.RawFieldOf(ks, vb)
i++
return true
})
if err != nil {
return nil, err
}
return json.Marshal(o)
}
s := make([][]json.RawMessage, m.Len())
i := 0
var err error
m.ForEach(func(kv bt.Kv[K, V]) bool {
var kb []byte
kb, err = json.Marshal(kv.K)
if err != nil {
return false
}
var vb []byte
vb, err = json.Marshal(kv.V)
if err != nil {
return false
}
s[i] = []json.RawMessage{kb, vb}
i++
return true
})
if err != nil {
return nil, err
}
return json.Marshal(s)
}
func (m *RbTreeMap[K, V]) UnmarshalJSON(b []byte) error {
m.clear()
if len(b) < 1 {
return errors.New("empty")
}
var kvs []bt.Kv[K, V]
if b[0] == '{' {
var o ju.RawObject
if err := json.Unmarshal(b, &o); err != nil {
return err
}
kvs = make([]bt.Kv[K, V], len(o))
for i, f := range o {
var k K
if err := ju.UnmarshalAsText(f.K, reflect.ValueOf(&k).Elem()); err != nil {
return err
}
var v V
if err := json.Unmarshal(f.V, &v); err != nil {
return err
}
kvs[i] = bt.KvOf(k, v)
}
} else {
var s [][]json.RawMessage
if err := json.Unmarshal(b, &s); err != nil {
return err
}
kvs = make([]bt.Kv[K, V], len(s))
for i, c := range s {
if len(c) != 2 {
return errors.New("expected pairs")
}
var k K
if err := json.Unmarshal(c[0], &k); err != nil {
return err
}
var v V
if err := json.Unmarshal(c[1], &v); err != nil {
return err
}
kvs[i] = bt.KvOf(k, v)
}
}
*m = NewRbTreeMap[K, V](m.less, its.OfSlice(kvs))
return nil
}
//
func (m MutRbTreeMap[K, V]) MarshalJSON() ([]byte, error) {
return json.Marshal(m.m)
}
func (m *MutRbTreeMap[K, V]) UnmarshalJSON(b []byte) error {
return json.Unmarshal(b, &m.m)
}