use alloc::boxed::Box;
use core::marker::PhantomData;
use crate::capability::{FromClientHook};
use crate::private::capability::ClientHook;
use crate::private::layout::{ListReader, ListBuilder, PointerReader, PointerBuilder, Pointer};
use crate::traits::{FromPointerReader, FromPointerBuilder, IndexMove, ListIter};
use crate::Result;
#[derive(Copy, Clone)]
pub struct Owned<T> where T: FromClientHook {
marker: PhantomData<T>,
}
impl<'a, T> crate::traits::Owned<'a> for Owned<T> where T: FromClientHook {
type Reader = Reader<'a, T>;
type Builder = Builder<'a, T>;
}
pub struct Reader<'a, T> where T: FromClientHook {
marker: PhantomData<T>,
reader: ListReader<'a>
}
impl <'a, T> Clone for Reader<'a, T> where T: FromClientHook {
fn clone(&self) -> Reader<'a, T> {
Reader { marker : self.marker, reader : self.reader }
}
}
impl <'a, T> Copy for Reader<'a, T> where T: FromClientHook {}
impl <'a, T> Reader<'a, T> where T: FromClientHook {
pub fn len(&self) -> u32 { self.reader.len() }
pub fn iter(self) -> ListIter<Reader<'a, T>, Result<T>> {
ListIter::new(self, self.len())
}
}
impl <'a, T> Reader<'a, T> where T: FromClientHook {
pub fn reborrow(&self) -> Reader<'_, T> {
Reader { reader: self.reader, marker: PhantomData }
}
}
impl <'a, T> FromPointerReader<'a> for Reader<'a, T> where T: FromClientHook {
fn get_from_pointer(reader: &PointerReader<'a>, default: Option<&'a [crate::Word]>) -> Result<Reader<'a, T>> {
Ok(Reader { reader: reader.get_list(Pointer, default)?,
marker: PhantomData })
}
}
impl <'a, T> Reader<'a, T> where T: FromClientHook {
pub fn get(self, index: u32) -> Result<T> {
assert!(index < self.len());
Ok(FromClientHook::new(self.reader.get_pointer_element(index).get_capability()?))
}
pub fn try_get(self, index: u32) -> Option<Result<T>> {
if index < self.len() {
Some(self.reader.get_pointer_element(index).get_capability().map(FromClientHook::new))
} else {
None
}
}
}
impl <'a, T> IndexMove<u32, Result<T>> for Reader<'a, T> where T: FromClientHook {
fn index_move(&self, index: u32) -> Result<T> {
self.get(index)
}
}
pub struct Builder<'a, T> where T: FromClientHook {
marker: PhantomData<T>,
builder: ListBuilder<'a>
}
impl <'a, T> Builder<'a, T> where T: FromClientHook {
pub fn len(&self) -> u32 { self.builder.len() }
pub fn into_reader(self) -> Reader<'a, T> {
Reader {
marker: PhantomData,
reader: self.builder.into_reader(),
}
}
pub fn set(&mut self, index: u32, value: Box<dyn ClientHook>) {
assert!(index < self.len());
self.builder.reborrow().get_pointer_element(index).set_capability(value);
}
}
impl <'a, T> Builder<'a, T> where T: FromClientHook {
pub fn reborrow(&mut self) -> Builder<'_, T> {
Builder { builder: self.builder, marker: PhantomData }
}
}
impl <'a, T> FromPointerBuilder<'a> for Builder<'a, T> where T: FromClientHook {
fn init_pointer(builder: PointerBuilder<'a>, size: u32) -> Builder<'a, T> {
Builder {
marker: PhantomData,
builder: builder.init_list(Pointer, size),
}
}
fn get_from_pointer(builder: PointerBuilder<'a>, default: Option<&'a [crate::Word]>) -> Result<Builder<'a, T>> {
Ok(Builder {
marker: PhantomData,
builder: builder.get_list(Pointer, default)?
})
}
}
impl <'a, T> Builder<'a, T> where T: FromClientHook {
pub fn get(self, index: u32) -> Result<T> {
assert!(index < self.len());
Ok(FromClientHook::new(self.builder.get_pointer_element(index).get_capability()?))
}
pub fn try_get(self, index: u32) -> Option<Result<T>> {
if index < self.len() {
Some(self.builder.get_pointer_element(index).get_capability().map(FromClientHook::new))
} else {
None
}
}
}
impl <'a, T> crate::traits::SetPointerBuilder for Reader<'a, T>
where T: FromClientHook
{
fn set_pointer_builder<'b>(pointer: crate::private::layout::PointerBuilder<'b>,
value: Reader<'a, T>,
canonicalize: bool) -> Result<()> {
pointer.set_list(&value.reader, canonicalize)
}
}
impl <'a, T> ::core::iter::IntoIterator for Reader<'a, T>
where T: FromClientHook
{
type Item = Result<T>;
type IntoIter = ListIter<Reader<'a, T>, Self::Item>;
fn into_iter(self) -> Self::IntoIter {
self.iter()
}
}