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 8 import "google/protobuf/descriptor.proto"; 9 10 option java_package = "fi.kapsi.koti.jpa.nanopb"; 11 12 enum 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. 23 message 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 (a] kapsi.fi> 49 // Web site: http://kapsi.fi/~jpa/nanopb 50 // Extensions: 1010 (all types) 51 // -------------------------------- 52 53 extend google.protobuf.FileOptions { 54 optional NanoPBOptions nanopb_fileopt = 1010; 55 } 56 57 extend google.protobuf.MessageOptions { 58 optional NanoPBOptions nanopb_msgopt = 1010; 59 } 60 61 extend google.protobuf.EnumOptions { 62 optional NanoPBOptions nanopb_enumopt = 1010; 63 } 64 65 extend google.protobuf.FieldOptions { 66 optional NanoPBOptions nanopb = 1010; 67 } 68 69 70
