func()

in collector/logs/sources/tail/sourceparse/docker_ffjson.go [70:302]

• 172 lines of code
• 47 McCabe index (conditional complexity)

func (j *DockerLog) UnmarshalJSONFFLexer(fs *fflib.FFLexer, state fflib.FFParseState) error {
	var err error
	currentKey := ffjtDockerLogbase
	_ = currentKey
	tok := fflib.FFTok_init
	wantedTok := fflib.FFTok_init

mainparse:
	for {
		tok = fs.Scan()
		//	println(fmt.Sprintf("debug: tok: %v  state: %v", tok, state))
		if tok == fflib.FFTok_error {
			goto tokerror
		}

		switch state {

		case fflib.FFParse_map_start:
			if tok != fflib.FFTok_left_bracket {
				wantedTok = fflib.FFTok_left_bracket
				goto wrongtokenerror
			}
			state = fflib.FFParse_want_key
			continue

		case fflib.FFParse_after_value:
			if tok == fflib.FFTok_comma {
				state = fflib.FFParse_want_key
			} else if tok == fflib.FFTok_right_bracket {
				goto done
			} else {
				wantedTok = fflib.FFTok_comma
				goto wrongtokenerror
			}

		case fflib.FFParse_want_key:
			// json {} ended. goto exit. woo.
			if tok == fflib.FFTok_right_bracket {
				goto done
			}
			if tok != fflib.FFTok_string {
				wantedTok = fflib.FFTok_string
				goto wrongtokenerror
			}

			kn := fs.Output.Bytes()
			if len(kn) <= 0 {
				// "" case. hrm.
				currentKey = ffjtDockerLognosuchkey
				state = fflib.FFParse_want_colon
				goto mainparse
			} else {
				switch kn[0] {

				case 'l':

					if bytes.Equal(ffjKeyDockerLogLog, kn) {
						currentKey = ffjtDockerLogLog
						state = fflib.FFParse_want_colon
						goto mainparse
					}

				case 's':

					if bytes.Equal(ffjKeyDockerLogStream, kn) {
						currentKey = ffjtDockerLogStream
						state = fflib.FFParse_want_colon
						goto mainparse
					}

				case 't':

					if bytes.Equal(ffjKeyDockerLogTime, kn) {
						currentKey = ffjtDockerLogTime
						state = fflib.FFParse_want_colon
						goto mainparse
					}

				}

				if fflib.SimpleLetterEqualFold(ffjKeyDockerLogTime, kn) {
					currentKey = ffjtDockerLogTime
					state = fflib.FFParse_want_colon
					goto mainparse
				}

				if fflib.EqualFoldRight(ffjKeyDockerLogStream, kn) {
					currentKey = ffjtDockerLogStream
					state = fflib.FFParse_want_colon
					goto mainparse
				}

				if fflib.SimpleLetterEqualFold(ffjKeyDockerLogLog, kn) {
					currentKey = ffjtDockerLogLog
					state = fflib.FFParse_want_colon
					goto mainparse
				}

				currentKey = ffjtDockerLognosuchkey
				state = fflib.FFParse_want_colon
				goto mainparse
			}

		case fflib.FFParse_want_colon:
			if tok != fflib.FFTok_colon {
				wantedTok = fflib.FFTok_colon
				goto wrongtokenerror
			}
			state = fflib.FFParse_want_value
			continue
		case fflib.FFParse_want_value:

			if tok == fflib.FFTok_left_brace || tok == fflib.FFTok_left_bracket || tok == fflib.FFTok_integer || tok == fflib.FFTok_double || tok == fflib.FFTok_string || tok == fflib.FFTok_bool || tok == fflib.FFTok_null {
				switch currentKey {

				case ffjtDockerLogLog:
					goto handle_Log

				case ffjtDockerLogStream:
					goto handle_Stream

				case ffjtDockerLogTime:
					goto handle_Time

				case ffjtDockerLognosuchkey:
					err = fs.SkipField(tok)
					if err != nil {
						return fs.WrapErr(err)
					}
					state = fflib.FFParse_after_value
					goto mainparse
				}
			} else {
				goto wantedvalue
			}
		}
	}

handle_Log:

	/* handler: j.Log type=string kind=string quoted=false*/

	{

		{
			if tok != fflib.FFTok_string && tok != fflib.FFTok_null {
				return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for string", tok))
			}
		}

		if tok == fflib.FFTok_null {

		} else {

			outBuf := fs.Output.Bytes()

			j.Log = string(string(outBuf))

		}
	}

	state = fflib.FFParse_after_value
	goto mainparse

handle_Stream:

	/* handler: j.Stream type=string kind=string quoted=false*/

	{

		{
			if tok != fflib.FFTok_string && tok != fflib.FFTok_null {
				return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for string", tok))
			}
		}

		if tok == fflib.FFTok_null {

		} else {

			outBuf := fs.Output.Bytes()

			j.Stream = string(string(outBuf))

		}
	}

	state = fflib.FFParse_after_value
	goto mainparse

handle_Time:

	/* handler: j.Time type=string kind=string quoted=false*/

	{

		{
			if tok != fflib.FFTok_string && tok != fflib.FFTok_null {
				return fs.WrapErr(fmt.Errorf("cannot unmarshal %s into Go value for string", tok))
			}
		}

		if tok == fflib.FFTok_null {

		} else {

			outBuf := fs.Output.Bytes()

			j.Time = string(string(outBuf))

		}
	}

	state = fflib.FFParse_after_value
	goto mainparse

wantedvalue:
	return fs.WrapErr(fmt.Errorf("wanted value token, but got token: %v", tok))
wrongtokenerror:
	return fs.WrapErr(fmt.Errorf("ffjson: wanted token: %v, but got token: %v output=%s", wantedTok, tok, fs.Output.String()))
tokerror:
	if fs.BigError != nil {
		return fs.WrapErr(fs.BigError)
	}
	err = fs.Error.ToError()
	if err != nil {
		return fs.WrapErr(err)
	}
	panic("ffjson-generated: unreachable, please report bug.")
done:

	return nil
}