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//! Bindings to libgit2's raw `git_oidarray` type
use std::ops::Deref;
use crate::oid::Oid;
use crate::raw;
use crate::util::Binding;
use std::mem;
use std::slice;
/// An oid array structure used by libgit2
///
/// Some APIs return arrays of OIDs which originate from libgit2. This
/// wrapper type behaves a little like `Vec<&Oid>` but does so without copying
/// the underlying Oids until necessary.
pub struct OidArray {
raw: raw::git_oidarray,
}
impl Deref for OidArray {
type Target = [Oid];
fn deref(&self) -> &[Oid] {
unsafe {
debug_assert_eq!(mem::size_of::<Oid>(), mem::size_of_val(&*self.raw.ids));
slice::from_raw_parts(self.raw.ids as *const Oid, self.raw.count as usize)
}
}
}
impl Binding for OidArray {
type Raw = raw::git_oidarray;
unsafe fn from_raw(raw: raw::git_oidarray) -> OidArray {
OidArray { raw }
}
fn raw(&self) -> raw::git_oidarray {
self.raw
}
}
impl<'repo> std::fmt::Debug for OidArray {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> Result<(), std::fmt::Error> {
f.debug_tuple("OidArray").field(&self.deref()).finish()
}
}
impl Drop for OidArray {
fn drop(&mut self) {
unsafe { raw::git_oidarray_free(&mut self.raw) }
}
}
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