1// Custom options for defining: 2// - Maximum size of string/bytes 3// - Maximum number of elements in array 4// 5// These are used by nanopb to generate statically allocable structures 6// for memory-limited environments. 7 8import "google/protobuf/descriptor.proto"; 9 10option java_package = "fi.kapsi.koti.jpa.nanopb"; 11 12enum FieldType { 13 FT_DEFAULT = 0; // Automatically decide field type, generate static field if possible. 14 FT_CALLBACK = 1; // Always generate a callback field. 15 FT_POINTER = 4; // Always generate a dynamically allocated field. 16 FT_STATIC = 2; // Generate a static field or raise an exception if not possible. 17 FT_IGNORE = 3; // Ignore the field completely. 18} 19 20// This is the inner options message, which basically defines options for 21// a field. When it is used in message or file scope, it applies to all 22// fields. 23message NanoPBOptions { 24 // Allocated size for 'bytes' and 'string' fields. 25 optional int32 max_size = 1; 26 27 // Allocated number of entries in arrays ('repeated' fields) 28 optional int32 max_count = 2; 29 30 // Force type of field (callback or static allocation) 31 optional FieldType type = 3 [default = FT_DEFAULT]; 32 33 // Use long names for enums, i.e. EnumName_EnumValue. 34 optional bool long_names = 4 [default = true]; 35 36 // Add 'packed' attribute to generated structs. 37 // Note: this cannot be used on CPUs that break on unaligned 38 // accesses to variables. 39 optional bool packed_struct = 5 [default = false]; 40} 41 42// Extensions to protoc 'Descriptor' type in order to define options 43// inside a .proto file. 44// 45// Protocol Buffers extension number registry 46// -------------------------------- 47// Project: Nanopb 48// Contact: Petteri Aimonen <jpa@kapsi.fi> 49// Web site: http://kapsi.fi/~jpa/nanopb 50// Extensions: 1010 (all types) 51// -------------------------------- 52 53extend google.protobuf.FileOptions { 54 optional NanoPBOptions nanopb_fileopt = 1010; 55} 56 57extend google.protobuf.MessageOptions { 58 optional NanoPBOptions nanopb_msgopt = 1010; 59} 60 61extend google.protobuf.EnumOptions { 62 optional NanoPBOptions nanopb_enumopt = 1010; 63} 64 65extend google.protobuf.FieldOptions { 66 optional NanoPBOptions nanopb = 1010; 67} 68 69 70