Struct kul::parser::RcDatumAllocator

pub struct RcDatumAllocator<TT, ET>(_);

A DatumAllocator for generic Datum types which allocates Datum values in heap-allocated Rcs.

Trait Implementations

impl<TT, ET> Default for RcDatumAllocator<TT, ET> where
    TT: Text, 

Must implement this manually because deriving would place unwanted bounds on the type parameters.

fn default() -> Self

This type only has one, default, value.

impl<TT: Debug, ET: Debug> Debug for RcDatumAllocator<TT, ET>

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl<TT, ET> DatumAllocator for RcDatumAllocator<TT, ET> where
    TT: Text, 

type TT = TT

The Text type for our Datum type. It should also implement TextConcat<Self> so it supports concatenation which the parsing requires.

type ET = ET

The "extra" type for our Datum type.

type DR = DatumRc<Self::TT, Self::ET>

The type of references to Datums yielded by our parsing.

fn new_datum(
    &mut self,
    from: RcDatum<Self::TT, Self::ET>
) -> Result<Self::DR, AllocError>

Allocate a fresh Datum, in whatever way the particular implementation wants, and set its initial value to that of the from argument. An AllocError is returned if allocation fails for any reason.