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