Update dependencies

vendor/github.com/go-json-experiment/json/jsontext/errors.go

@@ -0,0 +1,60 @@
+// Copyright 2020 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package jsontext
+
+import (
+	"github.com/go-json-experiment/json/internal/jsonwire"
+)
+
+const errorPrefix = "jsontext: "
+
+type ioError struct {
+	action string // either "read" or "write"
+	err    error
+}
+
+func (e *ioError) Error() string {
+	return errorPrefix + e.action + " error: " + e.err.Error()
+}
+func (e *ioError) Unwrap() error {
+	return e.err
+}
+
+// SyntacticError is a description of a syntactic error that occurred when
+// encoding or decoding JSON according to the grammar.
+//
+// The contents of this error as produced by this package may change over time.
+type SyntacticError struct {
+	requireKeyedLiterals
+	nonComparable
+
+	// ByteOffset indicates that an error occurred after this byte offset.
+	ByteOffset int64
+	str        string
+}
+
+func (e *SyntacticError) Error() string {
+	return errorPrefix + e.str
+}
+func (e *SyntacticError) withOffset(pos int64) error {
+	return &SyntacticError{ByteOffset: pos, str: e.str}
+}
+
+func newDuplicateNameError[Bytes ~[]byte | ~string](quoted Bytes) *SyntacticError {
+	return &SyntacticError{str: "duplicate name " + string(quoted) + " in object"}
+}
+
+func newInvalidCharacterError[Bytes ~[]byte | ~string](prefix Bytes, where string) *SyntacticError {
+	what := jsonwire.QuoteRune(prefix)
+	return &SyntacticError{str: "invalid character " + what + " " + where}
+}
+
+// TODO: Error types between "json", "jsontext", and "jsonwire" is a mess.
+// Clean this up.
+func init() {
+	// Inject behavior in "jsonwire" so that it can produce SyntacticError types.
+	jsonwire.NewError = func(s string) error { return &SyntacticError{str: s} }
+	jsonwire.ErrInvalidUTF8 = &SyntacticError{str: jsonwire.ErrInvalidUTF8.Error()}
+}