Struct OptMappedContents 

pub struct OptMappedContents { /* private fields */ }

Variant of MappedStrings that checks at runtime that files are present every time it is accessed

Trait Implementations

impl OptContents for OptMappedContents

fn is_skipped_content( &self, node: NodeId, ) -> PropertiesResult<'_, Option<bool>, Self>

Returns whether the given node is a skipped content, or None if out of bounds

fn content_length( &self, node: NodeId, ) -> PropertiesResult<'_, Option<u64>, Self>

Returns the content’s length, or None if out of bounds, or u64::MAX if it is not a content / does not not have a known length

impl PropertiesBackend for OptMappedContents

type DataFilesAvailability = OptionalDataFiles

fn map_if_available<T, U>( v: <Self::DataFilesAvailability as DataFilesAvailability>::Result<'_, T>, f: impl FnOnce(T) -> U, ) -> <Self::DataFilesAvailability as DataFilesAvailability>::Result<'_, U>

Applies the given function f to the value v if the value is available

fn zip_if_available<'err, T1, T2>( v1: <Self::DataFilesAvailability as DataFilesAvailability>::Result<'err, T1>, v2: <Self::DataFilesAvailability as DataFilesAvailability>::Result<'err, T2>, ) -> <Self::DataFilesAvailability as DataFilesAvailability>::Result<'err, (T1, T2)>

Returns (v1, v2) if both are available, or an error otherwise