936 lines
24 KiB
Rust
936 lines
24 KiB
Rust
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution and at
|
|
// http://rust-lang.org/COPYRIGHT.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
//! Support code for encoding and decoding types.
|
|
|
|
/*
|
|
Core encoding and decoding interfaces.
|
|
*/
|
|
|
|
#[allow(missing_doc)];
|
|
#[forbid(non_camel_case_types)];
|
|
|
|
|
|
use std::at_vec;
|
|
use std::hashmap::{HashMap, HashSet};
|
|
use std::trie::{TrieMap, TrieSet};
|
|
use std::uint;
|
|
use std::vec;
|
|
use ringbuf::RingBuf;
|
|
use container::Deque;
|
|
use dlist::DList;
|
|
use treemap::{TreeMap, TreeSet};
|
|
|
|
pub trait Encoder {
|
|
// Primitive types:
|
|
fn emit_nil(&mut self);
|
|
fn emit_uint(&mut self, v: uint);
|
|
fn emit_u64(&mut self, v: u64);
|
|
fn emit_u32(&mut self, v: u32);
|
|
fn emit_u16(&mut self, v: u16);
|
|
fn emit_u8(&mut self, v: u8);
|
|
fn emit_int(&mut self, v: int);
|
|
fn emit_i64(&mut self, v: i64);
|
|
fn emit_i32(&mut self, v: i32);
|
|
fn emit_i16(&mut self, v: i16);
|
|
fn emit_i8(&mut self, v: i8);
|
|
fn emit_bool(&mut self, v: bool);
|
|
fn emit_float(&mut self, v: float);
|
|
fn emit_f64(&mut self, v: f64);
|
|
fn emit_f32(&mut self, v: f32);
|
|
fn emit_char(&mut self, v: char);
|
|
fn emit_str(&mut self, v: &str);
|
|
|
|
// Compound types:
|
|
fn emit_enum(&mut self, name: &str, f: &fn(&mut Self));
|
|
|
|
fn emit_enum_variant(&mut self,
|
|
v_name: &str,
|
|
v_id: uint,
|
|
len: uint,
|
|
f: &fn(&mut Self));
|
|
fn emit_enum_variant_arg(&mut self, a_idx: uint, f: &fn(&mut Self));
|
|
|
|
fn emit_enum_struct_variant(&mut self,
|
|
v_name: &str,
|
|
v_id: uint,
|
|
len: uint,
|
|
f: &fn(&mut Self));
|
|
fn emit_enum_struct_variant_field(&mut self,
|
|
f_name: &str,
|
|
f_idx: uint,
|
|
f: &fn(&mut Self));
|
|
|
|
fn emit_struct(&mut self, name: &str, len: uint, f: &fn(&mut Self));
|
|
fn emit_struct_field(&mut self,
|
|
f_name: &str,
|
|
f_idx: uint,
|
|
f: &fn(&mut Self));
|
|
|
|
fn emit_tuple(&mut self, len: uint, f: &fn(&mut Self));
|
|
fn emit_tuple_arg(&mut self, idx: uint, f: &fn(&mut Self));
|
|
|
|
fn emit_tuple_struct(&mut self, name: &str, len: uint, f: &fn(&mut Self));
|
|
fn emit_tuple_struct_arg(&mut self, f_idx: uint, f: &fn(&mut Self));
|
|
|
|
// Specialized types:
|
|
fn emit_option(&mut self, f: &fn(&mut Self));
|
|
fn emit_option_none(&mut self);
|
|
fn emit_option_some(&mut self, f: &fn(&mut Self));
|
|
|
|
fn emit_seq(&mut self, len: uint, f: &fn(this: &mut Self));
|
|
fn emit_seq_elt(&mut self, idx: uint, f: &fn(this: &mut Self));
|
|
|
|
fn emit_map(&mut self, len: uint, f: &fn(&mut Self));
|
|
fn emit_map_elt_key(&mut self, idx: uint, f: &fn(&mut Self));
|
|
fn emit_map_elt_val(&mut self, idx: uint, f: &fn(&mut Self));
|
|
}
|
|
|
|
pub trait Decoder {
|
|
// Primitive types:
|
|
fn read_nil(&mut self) -> ();
|
|
fn read_uint(&mut self) -> uint;
|
|
fn read_u64(&mut self) -> u64;
|
|
fn read_u32(&mut self) -> u32;
|
|
fn read_u16(&mut self) -> u16;
|
|
fn read_u8(&mut self) -> u8;
|
|
fn read_int(&mut self) -> int;
|
|
fn read_i64(&mut self) -> i64;
|
|
fn read_i32(&mut self) -> i32;
|
|
fn read_i16(&mut self) -> i16;
|
|
fn read_i8(&mut self) -> i8;
|
|
fn read_bool(&mut self) -> bool;
|
|
fn read_f64(&mut self) -> f64;
|
|
fn read_f32(&mut self) -> f32;
|
|
fn read_float(&mut self) -> float;
|
|
fn read_char(&mut self) -> char;
|
|
fn read_str(&mut self) -> ~str;
|
|
|
|
// Compound types:
|
|
fn read_enum<T>(&mut self, name: &str, f: &fn(&mut Self) -> T) -> T;
|
|
|
|
fn read_enum_variant<T>(&mut self,
|
|
names: &[&str],
|
|
f: &fn(&mut Self, uint) -> T)
|
|
-> T;
|
|
fn read_enum_variant_arg<T>(&mut self,
|
|
a_idx: uint,
|
|
f: &fn(&mut Self) -> T)
|
|
-> T;
|
|
|
|
fn read_enum_struct_variant<T>(&mut self,
|
|
names: &[&str],
|
|
f: &fn(&mut Self, uint) -> T)
|
|
-> T;
|
|
fn read_enum_struct_variant_field<T>(&mut self,
|
|
&f_name: &str,
|
|
f_idx: uint,
|
|
f: &fn(&mut Self) -> T)
|
|
-> T;
|
|
|
|
fn read_struct<T>(&mut self,
|
|
s_name: &str,
|
|
len: uint,
|
|
f: &fn(&mut Self) -> T)
|
|
-> T;
|
|
fn read_struct_field<T>(&mut self,
|
|
f_name: &str,
|
|
f_idx: uint,
|
|
f: &fn(&mut Self) -> T)
|
|
-> T;
|
|
|
|
fn read_tuple<T>(&mut self, f: &fn(&mut Self, uint) -> T) -> T;
|
|
fn read_tuple_arg<T>(&mut self, a_idx: uint, f: &fn(&mut Self) -> T) -> T;
|
|
|
|
fn read_tuple_struct<T>(&mut self,
|
|
s_name: &str,
|
|
f: &fn(&mut Self, uint) -> T)
|
|
-> T;
|
|
fn read_tuple_struct_arg<T>(&mut self,
|
|
a_idx: uint,
|
|
f: &fn(&mut Self) -> T)
|
|
-> T;
|
|
|
|
// Specialized types:
|
|
fn read_option<T>(&mut self, f: &fn(&mut Self, bool) -> T) -> T;
|
|
|
|
fn read_seq<T>(&mut self, f: &fn(&mut Self, uint) -> T) -> T;
|
|
fn read_seq_elt<T>(&mut self, idx: uint, f: &fn(&mut Self) -> T) -> T;
|
|
|
|
fn read_map<T>(&mut self, f: &fn(&mut Self, uint) -> T) -> T;
|
|
fn read_map_elt_key<T>(&mut self, idx: uint, f: &fn(&mut Self) -> T) -> T;
|
|
fn read_map_elt_val<T>(&mut self, idx: uint, f: &fn(&mut Self) -> T) -> T;
|
|
}
|
|
|
|
pub trait Encodable<S:Encoder> {
|
|
fn encode(&self, s: &mut S);
|
|
}
|
|
|
|
pub trait Decodable<D:Decoder> {
|
|
fn decode(d: &mut D) -> Self;
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for uint {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_uint(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for uint {
|
|
fn decode(d: &mut D) -> uint {
|
|
d.read_uint()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for u8 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_u8(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for u8 {
|
|
fn decode(d: &mut D) -> u8 {
|
|
d.read_u8()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for u16 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_u16(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for u16 {
|
|
fn decode(d: &mut D) -> u16 {
|
|
d.read_u16()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for u32 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_u32(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for u32 {
|
|
fn decode(d: &mut D) -> u32 {
|
|
d.read_u32()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for u64 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_u64(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for u64 {
|
|
fn decode(d: &mut D) -> u64 {
|
|
d.read_u64()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for int {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_int(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for int {
|
|
fn decode(d: &mut D) -> int {
|
|
d.read_int()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for i8 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_i8(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for i8 {
|
|
fn decode(d: &mut D) -> i8 {
|
|
d.read_i8()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for i16 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_i16(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for i16 {
|
|
fn decode(d: &mut D) -> i16 {
|
|
d.read_i16()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for i32 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_i32(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for i32 {
|
|
fn decode(d: &mut D) -> i32 {
|
|
d.read_i32()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for i64 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_i64(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for i64 {
|
|
fn decode(d: &mut D) -> i64 {
|
|
d.read_i64()
|
|
}
|
|
}
|
|
|
|
impl<'self, S:Encoder> Encodable<S> for &'self str {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_str(*self)
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for ~str {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_str(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for ~str {
|
|
fn decode(d: &mut D) -> ~str {
|
|
d.read_str()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for @str {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_str(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for @str {
|
|
fn decode(d: &mut D) -> @str {
|
|
d.read_str().to_managed()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for float {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_float(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for float {
|
|
fn decode(d: &mut D) -> float {
|
|
d.read_float()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for f32 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_f32(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for f32 {
|
|
fn decode(d: &mut D) -> f32 {
|
|
d.read_f32()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for f64 {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_f64(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for f64 {
|
|
fn decode(d: &mut D) -> f64 {
|
|
d.read_f64()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for bool {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_bool(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for bool {
|
|
fn decode(d: &mut D) -> bool {
|
|
d.read_bool()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for char {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_char(*self)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for char {
|
|
fn decode(d: &mut D) -> char {
|
|
d.read_char()
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder> Encodable<S> for () {
|
|
fn encode(&self, s: &mut S) {
|
|
s.emit_nil()
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder> Decodable<D> for () {
|
|
fn decode(d: &mut D) -> () {
|
|
d.read_nil()
|
|
}
|
|
}
|
|
|
|
impl<'self, S:Encoder,T:Encodable<S>> Encodable<S> for &'self T {
|
|
fn encode(&self, s: &mut S) {
|
|
(**self).encode(s)
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder,T:Encodable<S>> Encodable<S> for ~T {
|
|
fn encode(&self, s: &mut S) {
|
|
(**self).encode(s)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D>> Decodable<D> for ~T {
|
|
fn decode(d: &mut D) -> ~T {
|
|
~Decodable::decode(d)
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder,T:Encodable<S>> Encodable<S> for @T {
|
|
fn encode(&self, s: &mut S) {
|
|
(**self).encode(s)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D> + 'static> Decodable<D> for @T {
|
|
fn decode(d: &mut D) -> @T {
|
|
@Decodable::decode(d)
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder,T:Encodable<S>> Encodable<S> for @mut T {
|
|
fn encode(&self, s: &mut S) {
|
|
(**self).encode(s)
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D> + 'static> Decodable<D> for @mut T {
|
|
fn decode(d: &mut D) -> @mut T {
|
|
@mut Decodable::decode(d)
|
|
}
|
|
}
|
|
|
|
impl<'self, S:Encoder,T:Encodable<S>> Encodable<S> for &'self [T] {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
for self.iter().enumerate().advance |(i, e)| {
|
|
s.emit_seq_elt(i, |s| e.encode(s))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder,T:Encodable<S>> Encodable<S> for ~[T] {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
for self.iter().enumerate().advance |(i, e)| {
|
|
s.emit_seq_elt(i, |s| e.encode(s))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D>> Decodable<D> for ~[T] {
|
|
fn decode(d: &mut D) -> ~[T] {
|
|
do d.read_seq |d, len| {
|
|
do vec::from_fn(len) |i| {
|
|
d.read_seq_elt(i, |d| Decodable::decode(d))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder,T:Encodable<S>> Encodable<S> for @[T] {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
for self.iter().enumerate().advance |(i, e)| {
|
|
s.emit_seq_elt(i, |s| e.encode(s))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D>> Decodable<D> for @[T] {
|
|
fn decode(d: &mut D) -> @[T] {
|
|
do d.read_seq |d, len| {
|
|
do at_vec::from_fn(len) |i| {
|
|
d.read_seq_elt(i, |d| Decodable::decode(d))
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder,T:Encodable<S>> Encodable<S> for Option<T> {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_option |s| {
|
|
match *self {
|
|
None => s.emit_option_none(),
|
|
Some(ref v) => s.emit_option_some(|s| v.encode(s)),
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D>> Decodable<D> for Option<T> {
|
|
fn decode(d: &mut D) -> Option<T> {
|
|
do d.read_option |d, b| {
|
|
if b {
|
|
Some(Decodable::decode(d))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S:Encoder,T0:Encodable<S>,T1:Encodable<S>> Encodable<S> for (T0, T1) {
|
|
fn encode(&self, s: &mut S) {
|
|
match *self {
|
|
(ref t0, ref t1) => {
|
|
do s.emit_seq(2) |s| {
|
|
s.emit_seq_elt(0, |s| t0.encode(s));
|
|
s.emit_seq_elt(1, |s| t1.encode(s));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T0:Decodable<D>,T1:Decodable<D>> Decodable<D> for (T0, T1) {
|
|
fn decode(d: &mut D) -> (T0, T1) {
|
|
do d.read_seq |d, len| {
|
|
assert_eq!(len, 2);
|
|
(
|
|
d.read_seq_elt(0, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(1, |d| Decodable::decode(d))
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
S: Encoder,
|
|
T0: Encodable<S>,
|
|
T1: Encodable<S>,
|
|
T2: Encodable<S>
|
|
> Encodable<S> for (T0, T1, T2) {
|
|
fn encode(&self, s: &mut S) {
|
|
match *self {
|
|
(ref t0, ref t1, ref t2) => {
|
|
do s.emit_seq(3) |s| {
|
|
s.emit_seq_elt(0, |s| t0.encode(s));
|
|
s.emit_seq_elt(1, |s| t1.encode(s));
|
|
s.emit_seq_elt(2, |s| t2.encode(s));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
T0: Decodable<D>,
|
|
T1: Decodable<D>,
|
|
T2: Decodable<D>
|
|
> Decodable<D> for (T0, T1, T2) {
|
|
fn decode(d: &mut D) -> (T0, T1, T2) {
|
|
do d.read_seq |d, len| {
|
|
assert_eq!(len, 3);
|
|
(
|
|
d.read_seq_elt(0, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(1, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(2, |d| Decodable::decode(d))
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
S: Encoder,
|
|
T0: Encodable<S>,
|
|
T1: Encodable<S>,
|
|
T2: Encodable<S>,
|
|
T3: Encodable<S>
|
|
> Encodable<S> for (T0, T1, T2, T3) {
|
|
fn encode(&self, s: &mut S) {
|
|
match *self {
|
|
(ref t0, ref t1, ref t2, ref t3) => {
|
|
do s.emit_seq(4) |s| {
|
|
s.emit_seq_elt(0, |s| t0.encode(s));
|
|
s.emit_seq_elt(1, |s| t1.encode(s));
|
|
s.emit_seq_elt(2, |s| t2.encode(s));
|
|
s.emit_seq_elt(3, |s| t3.encode(s));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
T0: Decodable<D>,
|
|
T1: Decodable<D>,
|
|
T2: Decodable<D>,
|
|
T3: Decodable<D>
|
|
> Decodable<D> for (T0, T1, T2, T3) {
|
|
fn decode(d: &mut D) -> (T0, T1, T2, T3) {
|
|
do d.read_seq |d, len| {
|
|
assert_eq!(len, 4);
|
|
(
|
|
d.read_seq_elt(0, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(1, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(2, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(3, |d| Decodable::decode(d))
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
S: Encoder,
|
|
T0: Encodable<S>,
|
|
T1: Encodable<S>,
|
|
T2: Encodable<S>,
|
|
T3: Encodable<S>,
|
|
T4: Encodable<S>
|
|
> Encodable<S> for (T0, T1, T2, T3, T4) {
|
|
fn encode(&self, s: &mut S) {
|
|
match *self {
|
|
(ref t0, ref t1, ref t2, ref t3, ref t4) => {
|
|
do s.emit_seq(5) |s| {
|
|
s.emit_seq_elt(0, |s| t0.encode(s));
|
|
s.emit_seq_elt(1, |s| t1.encode(s));
|
|
s.emit_seq_elt(2, |s| t2.encode(s));
|
|
s.emit_seq_elt(3, |s| t3.encode(s));
|
|
s.emit_seq_elt(4, |s| t4.encode(s));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
T0: Decodable<D>,
|
|
T1: Decodable<D>,
|
|
T2: Decodable<D>,
|
|
T3: Decodable<D>,
|
|
T4: Decodable<D>
|
|
> Decodable<D> for (T0, T1, T2, T3, T4) {
|
|
fn decode(d: &mut D) -> (T0, T1, T2, T3, T4) {
|
|
do d.read_seq |d, len| {
|
|
assert_eq!(len, 5);
|
|
(
|
|
d.read_seq_elt(0, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(1, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(2, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(3, |d| Decodable::decode(d)),
|
|
d.read_seq_elt(4, |d| Decodable::decode(d))
|
|
)
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
S: Encoder,
|
|
T: Encodable<S>
|
|
> Encodable<S> for DList<T> {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
for self.iter().enumerate().advance |(i, e)| {
|
|
s.emit_seq_elt(i, |s| e.encode(s));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D>> Decodable<D> for DList<T> {
|
|
fn decode(d: &mut D) -> DList<T> {
|
|
let mut list = DList::new();
|
|
do d.read_seq |d, len| {
|
|
for uint::range(0, len) |i| {
|
|
list.push_back(d.read_seq_elt(i, |d| Decodable::decode(d)));
|
|
}
|
|
}
|
|
list
|
|
}
|
|
}
|
|
|
|
impl<
|
|
S: Encoder,
|
|
T: Encodable<S>
|
|
> Encodable<S> for RingBuf<T> {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
for self.iter().enumerate().advance |(i, e)| {
|
|
s.emit_seq_elt(i, |s| e.encode(s));
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D:Decoder,T:Decodable<D>> Decodable<D> for RingBuf<T> {
|
|
fn decode(d: &mut D) -> RingBuf<T> {
|
|
let mut deque = RingBuf::new();
|
|
do d.read_seq |d, len| {
|
|
for uint::range(0, len) |i| {
|
|
deque.push_back(d.read_seq_elt(i, |d| Decodable::decode(d)));
|
|
}
|
|
}
|
|
deque
|
|
}
|
|
}
|
|
|
|
impl<
|
|
E: Encoder,
|
|
K: Encodable<E> + Hash + IterBytes + Eq,
|
|
V: Encodable<E>
|
|
> Encodable<E> for HashMap<K, V> {
|
|
fn encode(&self, e: &mut E) {
|
|
do e.emit_map(self.len()) |e| {
|
|
let mut i = 0;
|
|
for self.iter().advance |(key, val)| {
|
|
e.emit_map_elt_key(i, |e| key.encode(e));
|
|
e.emit_map_elt_val(i, |e| val.encode(e));
|
|
i += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
K: Decodable<D> + Hash + IterBytes + Eq,
|
|
V: Decodable<D>
|
|
> Decodable<D> for HashMap<K, V> {
|
|
fn decode(d: &mut D) -> HashMap<K, V> {
|
|
do d.read_map |d, len| {
|
|
let mut map = HashMap::with_capacity(len);
|
|
for uint::range(0, len) |i| {
|
|
let key = d.read_map_elt_key(i, |d| Decodable::decode(d));
|
|
let val = d.read_map_elt_val(i, |d| Decodable::decode(d));
|
|
map.insert(key, val);
|
|
}
|
|
map
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
S: Encoder,
|
|
T: Encodable<S> + Hash + IterBytes + Eq
|
|
> Encodable<S> for HashSet<T> {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
let mut i = 0;
|
|
for self.iter().advance |e| {
|
|
s.emit_seq_elt(i, |s| e.encode(s));
|
|
i += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
T: Decodable<D> + Hash + IterBytes + Eq
|
|
> Decodable<D> for HashSet<T> {
|
|
fn decode(d: &mut D) -> HashSet<T> {
|
|
do d.read_seq |d, len| {
|
|
let mut set = HashSet::with_capacity(len);
|
|
for uint::range(0, len) |i| {
|
|
set.insert(d.read_seq_elt(i, |d| Decodable::decode(d)));
|
|
}
|
|
set
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
E: Encoder,
|
|
V: Encodable<E>
|
|
> Encodable<E> for TrieMap<V> {
|
|
fn encode(&self, e: &mut E) {
|
|
do e.emit_map(self.len()) |e| {
|
|
let mut i = 0;
|
|
for self.each |key, val| {
|
|
e.emit_map_elt_key(i, |e| key.encode(e));
|
|
e.emit_map_elt_val(i, |e| val.encode(e));
|
|
i += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
V: Decodable<D>
|
|
> Decodable<D> for TrieMap<V> {
|
|
fn decode(d: &mut D) -> TrieMap<V> {
|
|
do d.read_map |d, len| {
|
|
let mut map = TrieMap::new();
|
|
for uint::range(0, len) |i| {
|
|
let key = d.read_map_elt_key(i, |d| Decodable::decode(d));
|
|
let val = d.read_map_elt_val(i, |d| Decodable::decode(d));
|
|
map.insert(key, val);
|
|
}
|
|
map
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<S: Encoder> Encodable<S> for TrieSet {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
let mut i = 0;
|
|
for self.each |e| {
|
|
s.emit_seq_elt(i, |s| e.encode(s));
|
|
i += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<D: Decoder> Decodable<D> for TrieSet {
|
|
fn decode(d: &mut D) -> TrieSet {
|
|
do d.read_seq |d, len| {
|
|
let mut set = TrieSet::new();
|
|
for uint::range(0, len) |i| {
|
|
set.insert(d.read_seq_elt(i, |d| Decodable::decode(d)));
|
|
}
|
|
set
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
E: Encoder,
|
|
K: Encodable<E> + Eq + TotalOrd,
|
|
V: Encodable<E> + Eq
|
|
> Encodable<E> for TreeMap<K, V> {
|
|
fn encode(&self, e: &mut E) {
|
|
do e.emit_map(self.len()) |e| {
|
|
let mut i = 0;
|
|
for self.iter().advance |(key, val)| {
|
|
e.emit_map_elt_key(i, |e| key.encode(e));
|
|
e.emit_map_elt_val(i, |e| val.encode(e));
|
|
i += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
K: Decodable<D> + Eq + TotalOrd,
|
|
V: Decodable<D> + Eq
|
|
> Decodable<D> for TreeMap<K, V> {
|
|
fn decode(d: &mut D) -> TreeMap<K, V> {
|
|
do d.read_map |d, len| {
|
|
let mut map = TreeMap::new();
|
|
for uint::range(0, len) |i| {
|
|
let key = d.read_map_elt_key(i, |d| Decodable::decode(d));
|
|
let val = d.read_map_elt_val(i, |d| Decodable::decode(d));
|
|
map.insert(key, val);
|
|
}
|
|
map
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
S: Encoder,
|
|
T: Encodable<S> + Eq + TotalOrd
|
|
> Encodable<S> for TreeSet<T> {
|
|
fn encode(&self, s: &mut S) {
|
|
do s.emit_seq(self.len()) |s| {
|
|
let mut i = 0;
|
|
for self.iter().advance |e| {
|
|
s.emit_seq_elt(i, |s| e.encode(s));
|
|
i += 1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
impl<
|
|
D: Decoder,
|
|
T: Decodable<D> + Eq + TotalOrd
|
|
> Decodable<D> for TreeSet<T> {
|
|
fn decode(d: &mut D) -> TreeSet<T> {
|
|
do d.read_seq |d, len| {
|
|
let mut set = TreeSet::new();
|
|
for uint::range(0, len) |i| {
|
|
set.insert(d.read_seq_elt(i, |d| Decodable::decode(d)));
|
|
}
|
|
set
|
|
}
|
|
}
|
|
}
|
|
|
|
// ___________________________________________________________________________
|
|
// Helper routines
|
|
//
|
|
// In some cases, these should eventually be coded as traits.
|
|
|
|
pub trait EncoderHelpers {
|
|
fn emit_from_vec<T>(&mut self, v: &[T], f: &fn(&mut Self, v: &T));
|
|
}
|
|
|
|
impl<S:Encoder> EncoderHelpers for S {
|
|
fn emit_from_vec<T>(&mut self, v: &[T], f: &fn(&mut S, &T)) {
|
|
do self.emit_seq(v.len()) |this| {
|
|
for v.iter().enumerate().advance |(i, e)| {
|
|
do this.emit_seq_elt(i) |this| {
|
|
f(this, e)
|
|
}
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
pub trait DecoderHelpers {
|
|
fn read_to_vec<T>(&mut self, f: &fn(&mut Self) -> T) -> ~[T];
|
|
}
|
|
|
|
impl<D:Decoder> DecoderHelpers for D {
|
|
fn read_to_vec<T>(&mut self, f: &fn(&mut D) -> T) -> ~[T] {
|
|
do self.read_seq |this, len| {
|
|
do vec::from_fn(len) |i| {
|
|
this.read_seq_elt(i, |this| f(this))
|
|
}
|
|
}
|
|
}
|
|
}
|