Macro gv 

macro_rules! gv {
    ($typestr:literal) => { ... };
}

Maps from GVariant typestrs to compatible Rust types returning a Marker. This Marker can then be used to cast data into that type by calling Marker::cast.

The signature is essentially fn gv(typestr : &str) -> impl Marker.

This is the main entrypoint to the library.

Given data that you want to interpret as a GVariant of type as you write:

gv!("as").cast(data);

Similarly if you want to interpret some data in a variant as an as you write:

v.get(gv!("as"));

The returned marker has a automatically generated type. Marker::TYPESTR will equal the typestr passed into the gv! invocation. Marker::Type is a type that has the same bit representation as GVariant type passed in.

The types are mapped as follows:

GVariant Type	Rust Type	Sized
b	Bool	Yes
y	u8	Yes
n	i16	Yes
q	u16	Yes
i	i32	Yes
u	u32	Yes
x	i64	Yes
t	u64	Yes
d	f64	Yes
s	Str	No
o	Str	No
g	Str	No
v	Variant	No
ms	MaybeNonFixedSize<Str> - and similarly for all non-Sized types	No
mi	MaybeFixedSize<i32> - and similarly for all Sized types	No
as	NonFixedWidthArray<Str> - and similarly for all non-Sized types	No
ai	[i32] and similarly for all Sized types	No
(sv)	Custom struct generated by this macro. Implements .to_tuple() method	Yes if all children are Sized
{si}	Custom struct generated by this Macro. Implements .to_tuple() method	Yes if all children are Sized