65 lines
1.2 KiB
Go
65 lines
1.2 KiB
Go
package objects
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import (
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"encoding/json"
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"github.com/d5/tengo"
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)
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// to_json(v object) => bytes
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func builtinToJSON(args ...Object) (Object, error) {
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if len(args) != 1 {
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return nil, ErrWrongNumArguments
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}
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v := ToInterface(args[0])
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if vErr, isErr := v.(error); isErr {
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v = vErr.Error()
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}
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res, err := json.Marshal(v)
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if err != nil {
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return &Error{Value: &String{Value: err.Error()}}, nil
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}
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if len(res) > tengo.MaxBytesLen {
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return nil, ErrBytesLimit
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}
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return &Bytes{Value: res}, nil
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}
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// from_json(data string/bytes) => object
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func builtinFromJSON(args ...Object) (Object, error) {
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if len(args) != 1 {
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return nil, ErrWrongNumArguments
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}
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var target interface{}
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switch o := args[0].(type) {
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case *Bytes:
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err := json.Unmarshal(o.Value, &target)
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if err != nil {
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return &Error{Value: &String{Value: err.Error()}}, nil
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}
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case *String:
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err := json.Unmarshal([]byte(o.Value), &target)
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if err != nil {
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return &Error{Value: &String{Value: err.Error()}}, nil
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}
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default:
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return nil, ErrInvalidArgumentType{
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Name: "first",
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Expected: "bytes/string",
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Found: args[0].TypeName(),
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}
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}
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res, err := FromInterface(target)
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if err != nil {
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return nil, err
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}
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return res, nil
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}
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