Macro cdragon_prop::binget

macro_rules! binget {
    ($e:expr => $($tail:tt)*) => { ... };
    ($e:expr, ) => { ... };
    ($e:expr, . $($tail:tt)*) => { ... };
    ($e:expr, $f:ident($t:ty) $($tail:tt)*) => { ... };
    ($e:expr, $x:literal($t:ty) $($tail:tt)*) => { ... };
    ($e:expr, ($t:ty) $($tail:tt)*) => { ... };
    ($e:expr, ($k:ty, $v:ty) $($tail:tt)*) => { ... };
}

Helper to access nested bin values

First parameter is the top-level bin value to access. Second parameter is the sequence of items to access. Elements must be properly downcasted by indicating the type when needed (in brackets).

Return an Option.

Examples

// Get an entry field value
binget!(entry => mName(BinString));
// Access content of a list field
binget!(entry => mNames(BinList)(BinString));
// Chained field access
binget!(entry => mData(BinStruct).mValue(BinU32));
// Access field from hash integer value
binget!(entry => 0x12345678(BinString));
// Access entries of a `BinMap`
binget!(map => (BinHash, BinLink));