The RxTender IDL syntax is heavily inspired from the rust language.

Defining an Item and an Error

Item and error types are declared as structures:

struct Status {
    id :string;
    value :int32;
}

In this example id and value are two fields of the Status structure. This can can then be used to send items or notify errors on a stream.

Scalar Types

Type	Definition	Default value
bool	A boolean	false
double	A double precision real number	0.0
i32	A signed 32bits integer	0
u32	An unsigned 32bits integer	0
i64	A signed 64bits integer	0
u64	An unsigned 32bits integer	0
string	An UTF8 string	empty string

Defining A Stream

A stream is declared the following way.

stream State() -> Stream<I, E>;

where State is the name of the Stream, "I" is the type of the items, and E the type of the error. I and E must be declared as structs. A stream can also accept creation arguments:

stream State(foo: u32, bar: u32) -> Status;

Naming convention

items and streams are CamelCase.