Test.msg

# msg level doc

# field level doc
bool bool_value
byte byte_value  # field level doc, style 2
# combined styles
char char_value # combined styles, part 2
float32 float32_value
float64 float64_value
int8 int8_value
uint8 uint8_value
int16 int16_value
uint16 uint16_value
int32 int32_value
uint32 uint32_value
int64 int64_value
uint64 uint64_value

@optional
float32 multiline_optional

@optional float32 inline_optional
@optional float32 inline_default_optional 32.0
@optional float32 INLINE_CONSTANT=32.0

@optional string optional_default_string @optional
@optional string OPTIONAL_STRING_CONST=@optional

@key
float32 multiline_key

@key float32 inline_key
@key float32 inline_default_key 32.0
@key float32 INLINE_CONSTANT_KEY=32.0

@key string key_default_string @key
@key string KEY_STRING_CONST=@key

@key
@optional
float32 multiline_optional_key

@key @optional float32 inline_optional_key
@optional @key float32 inline_default_optional_key 32.0
@key @optional float32 INLINE_CONSTANT_OPTIONAL_KEY=32.0

@optional
@key string optional_key_default_string @key @optional
@key
@optional string KEY_OPTIONAL_STRING_CONST=@optional @key