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use crate::translate::*;
use std::borrow::Borrow;
use std::cmp::Ordering;
use std::fmt;
use std::hash::{Hash, Hasher};
use std::ops::Deref;
use std::slice;
wrapper! {
#[doc(alias = "GByteArray")]
pub struct ByteArray(Shared<ffi::GByteArray>);
match fn {
ref => |ptr| ffi::g_byte_array_ref(ptr),
unref => |ptr| ffi::g_byte_array_unref(ptr),
type_ => || ffi::g_byte_array_get_type(),
}
}
impl Deref for ByteArray {
type Target = [u8];
fn deref(&self) -> &[u8] {
unsafe {
let ptr = (*self.to_glib_none().0).data;
let len = (*self.to_glib_none().0).len as usize;
debug_assert!(!ptr.is_null() || len == 0);
if ptr.is_null() {
&[]
} else {
slice::from_raw_parts(ptr as *const u8, len)
}
}
}
}
impl AsRef<[u8]> for ByteArray {
fn as_ref(&self) -> &[u8] {
&*self
}
}
impl<'a, T: ?Sized + Borrow<[u8]> + 'a> From<&'a T> for ByteArray {
fn from(value: &'a T) -> ByteArray {
let value = value.borrow();
unsafe {
let ba = ffi::g_byte_array_new();
ffi::g_byte_array_append(ba, value.as_ptr(), value.len() as u32);
from_glib_full(ba)
}
}
}
impl fmt::Debug for ByteArray {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_list().entries(self.as_ref()).finish()
}
}
macro_rules! impl_cmp {
($lhs:ty, $rhs: ty) => {
#[allow(clippy::redundant_slicing)]
#[allow(clippy::extra_unused_lifetimes)]
impl<'a, 'b> PartialEq<$rhs> for $lhs {
#[inline]
fn eq(&self, other: &$rhs) -> bool {
self[..].eq(&other[..])
}
}
#[allow(clippy::redundant_slicing)]
#[allow(clippy::extra_unused_lifetimes)]
impl<'a, 'b> PartialEq<$lhs> for $rhs {
#[inline]
fn eq(&self, other: &$lhs) -> bool {
self[..].eq(&other[..])
}
}
#[allow(clippy::redundant_slicing)]
#[allow(clippy::extra_unused_lifetimes)]
impl<'a, 'b> PartialOrd<$rhs> for $lhs {
#[inline]
fn partial_cmp(&self, other: &$rhs) -> Option<Ordering> {
self[..].partial_cmp(&other[..])
}
}
#[allow(clippy::redundant_slicing)]
#[allow(clippy::extra_unused_lifetimes)]
impl<'a, 'b> PartialOrd<$lhs> for $rhs {
#[inline]
fn partial_cmp(&self, other: &$lhs) -> Option<Ordering> {
self[..].partial_cmp(&other[..])
}
}
};
}
impl_cmp!(ByteArray, [u8]);
impl_cmp!(ByteArray, &'a [u8]);
impl_cmp!(&'a ByteArray, [u8]);
impl_cmp!(ByteArray, Vec<u8>);
impl_cmp!(&'a ByteArray, Vec<u8>);
impl PartialEq for ByteArray {
fn eq(&self, other: &Self) -> bool {
self[..] == other[..]
}
}
impl Eq for ByteArray {}
impl Hash for ByteArray {
fn hash<H: Hasher>(&self, state: &mut H) {
Hash::hash_slice(&self[..], state)
}
}
#[cfg(test)]
mod tests {
use super::*;
use std::collections::HashSet;
#[test]
fn various() {
let ba = ByteArray::from(b"foobar");
assert_eq!(ba, b"foobar" as &[u8]);
}
#[test]
fn hash() {
let b1 = ByteArray::from(b"this is a test");
let b2 = ByteArray::from(b"this is a test");
let b3 = ByteArray::from(b"test");
let mut set = HashSet::new();
set.insert(b1);
assert!(set.contains(&b2));
assert!(!set.contains(&b3));
}
}