Struct VfsAppData 

pub struct VfsAppData<T> { /* private fields */ }

A wrapper for the pAppData pointer in sqlite3_vfs, providing a safe way to manage VFS-specific application data and error states.

Implementations

impl<T> VfsAppData<T>

pub fn new(t: T) -> VfsAppData<T>

pub fn leak(self) -> *mut VfsAppData<T>

Leak, then pAppData can be set to VFS

pub unsafe fn from_raw(t: *mut VfsAppData<T>) -> VfsAppData<T>

Safety

Takes ownership of a pointer returned by leak.

pub fn pop_err(&self) -> Option<(i32, String)>

Retrieves and clears the last error recorded for the VFS.

pub fn store_err(&self, err: VfsError) -> i32

Stores an error code and message for the VFS, to be retrieved later by xGetLastError.

Trait Implementations

impl<T> Deref for VfsAppData<T>

Deref only, returns immutable reference, avoids race conditions

type Target = T

The resulting type after dereferencing.

fn deref(&self) -> &<VfsAppData<T> as Deref>::Target

Dereferences the value.