macro_rules! thrift_union {
($(#[$($def_attrs:tt)*])* union $identifier:ident $(< $lt:lifetime >)? { $($(#[$($field_attrs:tt)*])* $field_id:literal : $( ( $field_type:ident $(< $element_type:ident >)? $(< $field_lt:lifetime >)?) )? $field_name:ident $(;)?)* }) => { ... };
}Expand description
Macro used to generate Rust enums for Thrift unions where variants are a mix of unit and tuple types.
Use of this macro requires modifying the thrift IDL. For variants with empty structs as their
type, delete the typename (i.e. 1: EmptyStruct Var1; becomes 1: Var1). For variants with a
non-empty type, the typename must be contained within parens (e.g. 1: MyType Var1; becomes
1: (MyType) Var1;).
This macro allows for specifying lifetime annotations for the resulting enum and its fields.
When utilizing this macro the Thrift serialization traits and structs need to be in scope.