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// Copyright 2019-present Facebook Inc. All rights reserved.
// This source code is licensed under the Apache 2.0 license found
// in the LICENSE file in the root directory of this source tree.
package graphson
import (
"unsafe"
jsoniter "github.com/json-iterator/go"
"github.com/pkg/errors"
)
// EncoderOfError returns a value encoder which always fails to encode.
func (encodeExtension) EncoderOfError(format string, args ...interface{}) jsoniter.ValEncoder {
return decoratorOfError(format, args...)
}
// DecoderOfError returns a value decoder which always fails to decode.
func (decodeExtension) DecoderOfError(format string, args ...interface{}) jsoniter.ValDecoder {
return decoratorOfError(format, args...)
}
func decoratorOfError(format string, args ...interface{}) errorCodec {
err := errors.Errorf(format, args...)
return errorCodec{err}
}
type errorCodec struct{ error }
func (ec errorCodec) Encode(_ unsafe.Pointer, stream *jsoniter.Stream) {
if stream.Error == nil {
stream.Error = ec.error
}
}
func (errorCodec) IsEmpty(unsafe.Pointer) bool {
return false
}
func (ec errorCodec) Decode(_ unsafe.Pointer, iter *jsoniter.Iterator) {
if iter.Error == nil {
iter.Error = ec.error
}
}
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