From 234e0836f1040f7724251b4120a2351bcbf64131 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Sat, 13 Aug 2022 15:11:17 -0600 Subject: set up as a separate repo --- borrowed_tags.go | 38 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 borrowed_tags.go (limited to 'borrowed_tags.go') diff --git a/borrowed_tags.go b/borrowed_tags.go new file mode 100644 index 0000000..07292b1 --- /dev/null +++ b/borrowed_tags.go @@ -0,0 +1,38 @@ +// Copyright 2011 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 lowmemjson + +import ( + "strings" +) + +// tagOptions is the string following a comma in a struct field's "json" +// tag, or the empty string. It does not include the leading comma. +type tagOptions string + +// parseTag splits a struct field's json tag into its name and +// comma-separated options. +func parseTag(tag string) (string, tagOptions) { + tag, opt, _ := strings.Cut(tag, ",") + return tag, tagOptions(opt) +} + +// Contains reports whether a comma-separated list of options +// contains a particular substr flag. substr must be surrounded by a +// string boundary or commas. +func (o tagOptions) Contains(optionName string) bool { + if len(o) == 0 { + return false + } + s := string(o) + for s != "" { + var name string + name, s, _ = strings.Cut(s, ",") + if name == optionName { + return true + } + } + return false +} -- cgit v1.2.3-2-g168b