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88 lines
1.5 KiB
Go
88 lines
1.5 KiB
Go
package main
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import (
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"encoding/json"
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)
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func parse(dec *json.Decoder) (interface{}, error) {
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token, err := dec.Token()
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if err != nil {
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return nil, err
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}
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if delim, ok := token.(json.Delim); ok {
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switch delim {
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case '{':
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return decodeDict(dec)
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case '[':
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return decodeArray(dec)
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}
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}
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return token, nil
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}
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func decodeDict(dec *json.Decoder) (*dict, error) {
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d := newDict()
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for {
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token, err := dec.Token()
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if err != nil {
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return nil, err
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}
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if delim, ok := token.(json.Delim); ok && delim == '}' {
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return d, nil
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}
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key := token.(string)
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token, err = dec.Token()
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if err != nil {
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return nil, err
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}
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var value interface{} = token
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if delim, ok := token.(json.Delim); ok {
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switch delim {
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case '{':
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value, err = decodeDict(dec)
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if err != nil {
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return nil, err
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}
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case '[':
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value, err = decodeArray(dec)
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if err != nil {
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return nil, err
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}
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}
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}
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d.set(key, value)
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}
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}
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type array = []interface{}
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func decodeArray(dec *json.Decoder) ([]interface{}, error) {
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slice := make(array, 0)
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for index := 0; ; index++ {
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token, err := dec.Token()
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if err != nil {
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return nil, err
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}
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if delim, ok := token.(json.Delim); ok {
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switch delim {
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case '{':
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value, err := decodeDict(dec)
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if err != nil {
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return nil, err
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}
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slice = append(slice, value)
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case '[':
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value, err := decodeArray(dec)
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if err != nil {
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return nil, err
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}
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slice = append(slice, value)
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case ']':
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return slice, nil
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}
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continue
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}
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slice = append(slice, token)
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}
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}
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