snapshot of https://github.com/ent/ent.git (master, 2026-09-15; blobs > 131072B omitted)

dialect/gremlin/encoding/graphson/error.go

@@ -0,0 +1,45 @@
+// 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 (
+	"fmt"
+	"unsafe"
+
+	jsoniter "github.com/json-iterator/go"
+)
+
+// EncoderOfError returns a value encoder which always fails to encode.
+func (encodeExtension) EncoderOfError(format string, args ...any) jsoniter.ValEncoder {
+	return decoratorOfError(format, args...)
+}
+
+// DecoderOfError returns a value decoder which always fails to decode.
+func (decodeExtension) DecoderOfError(format string, args ...any) jsoniter.ValDecoder {
+	return decoratorOfError(format, args...)
+}
+
+func decoratorOfError(format string, args ...any) errorCodec {
+	err := fmt.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
+	}
+}