Method Parse

proto/properties.go:137–191

Parse populates p by parsing a string in the protobuf struct field tag style.

(tag string)

// Parse populates p by parsing a string in the protobuf struct field tag style.
func (p *Properties) Parse(tag string) {
	// For example: "bytes,49,opt,name=foo,def=hello!"
	for len(tag) > 0 {
		i := strings.IndexByte(tag, ',')
		if i < 0 {
			i = len(tag)
		}
		switch s := tag[:i]; {
		case strings.HasPrefix(s, "name="):
			p.OrigName = s[len("name="):]
		case strings.HasPrefix(s, "json="):
			p.JSONName = s[len("json="):]
		case strings.HasPrefix(s, "enum="):
			p.Enum = s[len("enum="):]
		case strings.HasPrefix(s, "weak="):
			p.Weak = s[len("weak="):]
		case strings.Trim(s, "0123456789") == "":
			n, _ := strconv.ParseUint(s, 10, 32)
			p.Tag = int(n)
		case s == "opt":
			p.Optional = true
		case s == "req":
			p.Required = true
		case s == "rep":
			p.Repeated = true
		case s == "varint" || s == "zigzag32" || s == "zigzag64":
			p.Wire = s
			p.WireType = WireVarint
		case s == "fixed32":
			p.Wire = s
			p.WireType = WireFixed32
		case s == "fixed64":
			p.Wire = s
			p.WireType = WireFixed64
		case s == "bytes":
			p.Wire = s
			p.WireType = WireBytes
		case s == "group":
			p.Wire = s
			p.WireType = WireStartGroup
		case s == "packed":
			p.Packed = true
		case s == "proto3":
			p.Proto3 = true
		case s == "oneof":
			p.Oneof = true
		case strings.HasPrefix(s, "def="):
			// The default tag is special in that everything afterwards is the
			// default regardless of the presence of commas.
			p.HasDefault = true
			p.Default, i = tag[len("def="):], len(tag)
		}
		tag = strings.TrimPrefix(tag[i:], ",")
	}
}

// Init populates the properties from a protocol buffer struct tag.
//