Method binaryAppendCall

gen/marshal.go:435–448

binaryAppendCall generates code for appender interfaces that use pre-allocated buffer. We optimize for cases where the size is 0-256 bytes.

(vname, method, appendFunc string)

// binaryAppendCall generates code for appender interfaces that use pre-allocated buffer.
// We optimize for cases where the size is 0-256 bytes.
func (m *marshalGen) binaryAppendCall(vname, method, appendFunc string) {
	sz := randIdent()
	vname = strings.Trim(vname, "(*)")
	// Reserve 2 bytes for the header bin8 or str8.
	m.p.printf("\no = append(o, 0, 0); %s := len(o)", sz)
	m.p.printf("\no, err = %s.%s(o)", vname, method)
	m.p.wrapErrCheck(m.ctx.ArgsStr())
	m.p.printf("\n%s = len(o) - %s", sz, sz)
	if appendFunc == "msgp.AppendString" {
		m.p.printf("\no = msgp.AppendBytesStringTwoPrefixed(o, %s)", sz)
	} else {
		m.p.printf("\no = msgp.AppendBytesTwoPrefixed(o, %s)", sz)
	}
}