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| -rw-r--r-- | generator/nanopb/options.proto | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/generator/nanopb/options.proto b/generator/nanopb/options.proto new file mode 100644 index 00000000..f08e53d1 --- /dev/null +++ b/generator/nanopb/options.proto @@ -0,0 +1,120 @@ +// This is a transitional file, to provide parallel support between the old +// nanopb.proto and new options.proto files. Eventually nanopb.proto will +// be left only for legacy code, but for now the generator is still also +// using it. However, your new code can start using this file already now. +// See pull request #241 for details: +// https://github.com/nanopb/nanopb/pull/241 + +// Custom options for defining: +// - Maximum size of string/bytes +// - Maximum number of elements in array +// +// These are used by nanopb to generate statically allocable structures +// for memory-limited environments. + +syntax = "proto2"; +import "google/protobuf/descriptor.proto"; + +package nanopb; +option java_package = "fi.kapsi.koti.jpa.nanopb"; + +enum FieldType { + FT_DEFAULT = 0; // Automatically decide field type, generate static field if possible. + FT_CALLBACK = 1; // Always generate a callback field. + FT_POINTER = 4; // Always generate a dynamically allocated field. + FT_STATIC = 2; // Generate a static field or raise an exception if not possible. + FT_IGNORE = 3; // Ignore the field completely. + FT_INLINE = 5; // Legacy option, use the separate 'fixed_length' option instead +} + +enum IntSize { + IS_DEFAULT = 0; // Default, 32/64bit based on type in .proto + IS_8 = 8; + IS_16 = 16; + IS_32 = 32; + IS_64 = 64; +} + +// This is the inner options message, which basically defines options for +// a field. When it is used in message or file scope, it applies to all +// fields. +message Options { + // Allocated size for 'bytes' and 'string' fields. + // For string fields, this should include the space for null terminator. + optional int32 max_size = 1; + + // Maximum length for 'string' fields. Setting this is equivalent + // to setting max_size to a value of length+1. + optional int32 max_length = 14; + + // Allocated number of entries in arrays ('repeated' fields) + optional int32 max_count = 2; + + // Size of integer fields. Can save some memory if you don't need + // full 32 bits for the value. + optional IntSize int_size = 7 [default = IS_DEFAULT]; + + // Force type of field (callback or static allocation) + optional FieldType type = 3 [default = FT_DEFAULT]; + + // Use long names for enums, i.e. EnumName_EnumValue. + optional bool long_names = 4 [default = true]; + + // Add 'packed' attribute to generated structs. + // Note: this cannot be used on CPUs that break on unaligned + // accesses to variables. + optional bool packed_struct = 5 [default = false]; + + // Add 'packed' attribute to generated enums. + optional bool packed_enum = 10 [default = false]; + + // Skip this message + optional bool skip_message = 6 [default = false]; + + // Generate oneof fields as normal optional fields instead of union. + optional bool no_unions = 8 [default = false]; + + // integer type tag for a message + optional uint32 msgid = 9; + + // decode oneof as anonymous union + optional bool anonymous_oneof = 11 [default = false]; + + // Proto3 singular field does not generate a "has_" flag + optional bool proto3 = 12 [default = false]; + + // Generate an enum->string mapping function (can take up lots of space). + optional bool enum_to_string = 13 [default = false]; + + // Generate bytes arrays with fixed length + optional bool fixed_length = 15 [default = false]; +} + +// Extensions to protoc 'Descriptor' type in order to define options +// inside a .proto file. +// +// Protocol Buffers extension number registry +// -------------------------------- +// Project: Nanopb +// Contact: Petteri Aimonen <jpa@kapsi.fi> +// Web site: http://kapsi.fi/~jpa/nanopb +// Extensions: 1010 (all types) +// -------------------------------- + +extend google.protobuf.FileOptions { + optional Options fileopt = 1010; +} + +extend google.protobuf.MessageOptions { + optional Options msgopt = 1010; +} + +extend google.protobuf.EnumOptions { + optional Options enumopt = 1010; +} + +extend google.protobuf.FieldOptions { + optional Options fieldopt = 1010; +} + + |