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use traits::{FromPointerReader, FromPointerBuilder, ToU16, FromU16, ListIter, IndexMove};
use private::layout::{ListReader, ListBuilder, PointerReader, PointerBuilder,
TwoBytes, PrimitiveElement};
use {NotInSchema, Result};
use std::marker::PhantomData;
#[derive(Clone, Copy)]
pub struct Owned<T> {
marker: PhantomData<T>,
}
impl <'a, T> ::traits::Owned<'a> for Owned<T> where T: FromU16 {
type Reader = Reader<'a, T>;
type Builder = Builder<'a, T>;
}
#[derive(Clone, Copy)]
pub struct Reader<'a, T> {
marker: PhantomData<T>,
reader: ListReader<'a>
}
impl <'a, T: FromU16> Reader<'a, T> {
pub fn new<'b>(reader: ListReader<'b>) -> Reader<'b, T> {
Reader::<'b, T> { reader: reader, marker: PhantomData }
}
pub fn len(&self) -> u32 { self.reader.len() }
pub fn iter(self) -> ListIter<Reader<'a, T>, ::std::result::Result<T, NotInSchema>>{
let l = self.len();
ListIter::new(self, l)
}
}
impl <'a, T : FromU16> FromPointerReader<'a> for Reader<'a, T> {
fn get_from_pointer(reader: &PointerReader<'a>) -> Result<Reader<'a, T>> {
Ok(Reader { reader: try!(reader.get_list(TwoBytes, ::std::ptr::null())),
marker: PhantomData })
}
}
impl <'a, T: FromU16> IndexMove<u32, ::std::result::Result<T, NotInSchema>> for Reader<'a, T>{
fn index_move(&self, index: u32) -> ::std::result::Result<T, NotInSchema> {
self.get(index)
}
}
impl <'a, T : FromU16> Reader<'a, T> {
pub fn get(&self, index: u32) -> ::std::result::Result<T, NotInSchema> {
assert!(index < self.len());
let result: u16 = PrimitiveElement::get(&self.reader, index);
FromU16::from_u16(result)
}
}
pub struct Builder<'a, T> {
marker: PhantomData<T>,
builder: ListBuilder<'a>
}
impl <'a, T : ToU16 + FromU16> Builder<'a, T> {
pub fn new(builder: ListBuilder<'a>) -> Builder<'a, T> {
Builder { builder: builder, marker: PhantomData }
}
pub fn len(&self) -> u32 { self.builder.len() }
pub fn as_reader(self) -> Reader<'a, T> {
Reader { reader: self.builder.as_reader(), marker: PhantomData, }
}
pub fn set(&mut self, index: u32, value: T) {
assert!(index < self.len());
PrimitiveElement::set(&self.builder, index, value.to_u16());
}
}
impl <'a, T : FromU16> FromPointerBuilder<'a> for Builder<'a, T> {
fn init_pointer(builder: PointerBuilder<'a>, size: u32) -> Builder<'a, T> {
Builder { builder: builder.init_list(TwoBytes, size),
marker: PhantomData }
}
fn get_from_pointer(builder: PointerBuilder<'a>) -> Result<Builder<'a, T>> {
Ok(Builder { builder: try!(builder.get_list(TwoBytes, ::std::ptr::null())),
marker: PhantomData })
}
}
impl <'a, T : ToU16 + FromU16> Builder<'a, T> {
pub fn get(&self, index: u32) -> ::std::result::Result<T, NotInSchema> {
assert!(index < self.len());
let result: u16 = PrimitiveElement::get_from_builder(&self.builder, index);
FromU16::from_u16(result)
}
}
impl <'a, T> ::traits::SetPointerBuilder<Builder<'a, T>> for Reader<'a, T> {
fn set_pointer_builder<'b>(pointer: ::private::layout::PointerBuilder<'b>,
value: Reader<'a, T>) -> Result<()> {
pointer.set_list(&value.reader)
}
}