json/model/arrayNode.go

58 lines
1014 B
Go

package model
import (
"bytes"
"fmt"
)
type ArrayNode struct {
Value NodeArrayValue
}
func (n ArrayNode) Type() NodeType {
return ArrayType
}
func (n *ArrayNode) MarshalJSON() ([]byte, error) {
result := make([][]byte, 0, len(n.Value))
for _, v := range n.Value {
b, err := v.MarshalJSON()
if err != nil {
return nil, err
}
result = append(result, b)
}
return bytes.Join(
[][]byte{
[]byte("["),
bytes.Join(result, []byte(", ")),
[]byte("]"),
}, []byte("")), nil
}
func (n *ArrayNode) Set(v any) error {
val, ok := v.(NodeArrayValue)
if !ok {
return fmt.Errorf("%v is not array", v)
}
n.Value = val
return nil
}
func (n *ArrayNode) Index(idx int) (Node, error) {
if len(n.Value) <= idx {
return nil, fmt.Errorf("index %d out of range [0...%d]", idx, len(n.Value)-1)
}
return n.Value[idx], nil
}
func (n *ArrayNode) Merge(n2 *ArrayNode) {
n.Value = append(n.Value, n2.Value...)
}
func (n *ArrayNode) Len() int {
return len(n.Value)
}
type NodeArrayValue []Node