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.

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.

optional int32 max_size = 1
Allocated size for 'bytes' and 'string' fields.
optional int32 max_count = 2
Allocated number of entries in arrays ('repeated' fields)
optional IntSize int_size = 7
Size of integer fields. Can save some memory if you don't need full 32 bits for the value.
optional FieldType type = 3
Force type of field (callback or static allocation)
optional bool long_names = 4
Use long names for enums, i.e. EnumName_EnumValue.
optional bool packed_struct = 5
Add 'packed' attribute to generated structs. Note: this cannot be used on CPUs that break on unaligned accesses to variables.
optional bool packed_enum = 10
Add 'packed' attribute to generated enums.
optional bool skip_message = 6
Skip this message
optional bool no_unions = 8
Generate oneof fields as normal optional fields instead of union.
optional uint32 msgid = 9
integer type tag for a message
optional bool anonymous_oneof = 11
decode oneof as anonymous union

Default package

enum FieldType