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use std::{marker, ptr};
use traits::{FromPointerReader, FromPointerBuilder, IndexMove, ListIter};
use private::layout::{ListReader, ListBuilder, PointerReader, PointerBuilder,
PrimitiveElement};
use Result;
#[derive(Clone, Copy)]
pub struct Owned<T> {
marker: marker::PhantomData<T>,
}
impl <'a, T> ::traits::Owned<'a> for Owned<T> where T: PrimitiveElement {
type Reader = Reader<'a, T>;
type Builder = Builder<'a, T>;
}
#[derive(Clone, Copy)]
pub struct Reader<'a, T> where T: PrimitiveElement {
marker: marker::PhantomData<T>,
reader: ListReader<'a>
}
impl <'a, T: PrimitiveElement> Reader<'a, T> {
pub fn new<'b>(reader: ListReader<'b>) -> Reader<'b, T> {
Reader::<'b, T> { reader: reader, marker: marker::PhantomData }
}
pub fn len(&self) -> u32 { self.reader.len() }
pub fn iter(self) -> ListIter<Reader<'a, T>, T>{
let l = self.len();
ListIter::new(self, l)
}
}
impl <'a, T: PrimitiveElement> FromPointerReader<'a> for Reader<'a, T> {
fn get_from_pointer(reader: &PointerReader<'a>) -> Result<Reader<'a, T>> {
Ok(Reader { reader: try!(reader.get_list(T::element_size(), ptr::null())),
marker: marker::PhantomData })
}
}
impl <'a, T: PrimitiveElement> IndexMove<u32, T> for Reader<'a, T>{
fn index_move(&self, index: u32) -> T {
self.get(index)
}
}
impl <'a, T: PrimitiveElement> Reader<'a, T> {
pub fn get(&self, index: u32) -> T {
assert!(index < self.len());
PrimitiveElement::get(&self.reader, index)
}
}
pub struct Builder<'a, T> where T: PrimitiveElement {
marker: marker::PhantomData<T>,
builder: ListBuilder<'a>
}
impl <'a, T> Builder<'a, T> where T: PrimitiveElement {
pub fn new(builder: ListBuilder<'a>) -> Builder<'a, T> {
Builder { builder: builder, marker: marker::PhantomData }
}
pub fn len(&self) -> u32 { self.builder.len() }
pub fn set(&mut self, index: u32, value: T) {
PrimitiveElement::set(&self.builder, index, value);
}
}
impl <'a, T: PrimitiveElement> FromPointerBuilder<'a> for Builder<'a, T> {
fn init_pointer(builder: PointerBuilder<'a>, size: u32) -> Builder<'a, T> {
Builder { builder: builder.init_list(T::element_size(), size),
marker: marker::PhantomData }
}
fn get_from_pointer(builder: PointerBuilder<'a>) -> Result<Builder<'a, T>> {
Ok(Builder { builder: try!(builder.get_list(T::element_size(), ptr::null())),
marker: marker::PhantomData })
}
}
impl <'a, T : PrimitiveElement> Builder<'a, T> {
pub fn get(&self, index: u32) -> T {
assert!(index < self.len());
PrimitiveElement::get_from_builder(&self.builder, index)
}
}
impl <'a, T> ::traits::SetPointerBuilder<Builder<'a, T>> for Reader<'a, T>
where T: PrimitiveElement
{
fn set_pointer_builder<'b>(pointer: PointerBuilder<'b>,
value: Reader<'a, T>) -> Result<()> {
pointer.set_list(&value.reader)
}
}