func (p *parser) dispatch(depth int, buf *streambuf.Buffer) (string, bool, bool, bool) {
if buf.Len() == 0 {
return "", false, true, false
}
var value string
var iserror, ok, complete bool
snapshot := buf.Snapshot()
switch buf.Bytes()[0] {
case '*':
value, iserror, ok, complete = p.parseArray(depth, buf)
case '$':
value, ok, complete = p.parseString(buf)
case ':':
value, ok, complete = p.parseInt(buf)
case '+':
value, ok, complete = p.parseSimpleString(buf)
case '-':
iserror = true
value, ok, complete = p.parseSimpleString(buf)
default:
debug("Unexpected message starting with %s", buf.Bytes()[0])
return "", false, false, false
}
if !ok || !complete {
buf.Restore(snapshot)
}
return value, iserror, ok, complete
}
func doParseCommand(parser *parser, buf *streambuf.Buffer) parseResult {
// check if binary + text command and dispatch
if !buf.Avail(2) {
return parser.needMore()
}
magic := buf.Bytes()[0]
is_binary := magic == MemcacheMagicRequest || magic == MemcacheMagicResponse
if is_binary {
return parser.contWith(buf, parseStateBinaryCommand)
} else {
return parser.contWith(buf, parseStateTextCommand)
}
}
func parseNoReplyArg(buf *streambuf.Buffer) (bool, error) {
debug("parse noreply")
err := parseNextArg(buf)
if err != nil {
return false, textArgError(err)
}
var noreplyArg = []byte("noreply")
noreply := bytes.HasPrefix(buf.Bytes(), noreplyArg)
if !noreply {
return false, ErrExpectedNoReply
}
return true, nil
}