text/x-protobuf
*.proto
//
[$@%][$]?[a-zA-Z_][a-zA-Z0-9_]*
"
"
message
enum
package
required
optional
repeated
import
extensions
to
extend
service
rpc
returns
option
default
packed
deprecated
double
float
int32
int64
uint32
uint64
sint32
sint64
fixed32
fixed64
sfixed32
sfixed64
bool
string
bytes
true
false