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serde/benches/bench_vec.rs

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Rust
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#![feature(plugin)]
#[plugin]
extern crate serde_macros;
extern crate serde;
extern crate "rustc-serialize" as rustc_serialize;
extern crate test;
use std::fmt::Show;
use test::Bencher;
use rustc_serialize::{Decoder, Decodable};
use serde::de::{Deserializer, Deserialize};
//////////////////////////////////////////////////////////////////////////////
#[derive(PartialEq, Show)]
pub enum Error {
EndOfStream,
SyntaxError,
OtherError(String),
}
//////////////////////////////////////////////////////////////////////////////
mod decoder {
use std::vec;
use rustc_serialize;
use super::Error;
use super::Error::{EndOfStream, SyntaxError, OtherError};
pub struct IsizeDecoder {
len: usize,
iter: vec::IntoIter<isize>,
}
impl IsizeDecoder {
#[inline]
pub fn new(values: Vec<isize>) -> IsizeDecoder {
IsizeDecoder {
len: values.len(),
iter: values.into_iter(),
}
}
}
impl rustc_serialize::Decoder for IsizeDecoder {
type Error = Error;
fn error(&mut self, msg: &str) -> Error {
OtherError(msg.to_string())
}
// Primitive types:
fn read_nil(&mut self) -> Result<(), Error> { Err(SyntaxError) }
fn read_usize(&mut self) -> Result<usize, Error> { Err(SyntaxError) }
fn read_u64(&mut self) -> Result<u64, Error> { Err(SyntaxError) }
fn read_u32(&mut self) -> Result<u32, Error> { Err(SyntaxError) }
fn read_u16(&mut self) -> Result<u16, Error> { Err(SyntaxError) }
fn read_u8(&mut self) -> Result<u8, Error> { Err(SyntaxError) }
#[inline]
fn read_isize(&mut self) -> Result<isize, Error> {
match self.iter.next() {
Some(value) => Ok(value),
None => Err(EndOfStream),
}
}
fn read_i64(&mut self) -> Result<i64, Error> { Err(SyntaxError) }
fn read_i32(&mut self) -> Result<i32, Error> { Err(SyntaxError) }
fn read_i16(&mut self) -> Result<i16, Error> { Err(SyntaxError) }
fn read_i8(&mut self) -> Result<i8, Error> { Err(SyntaxError) }
fn read_bool(&mut self) -> Result<bool, Error> { Err(SyntaxError) }
fn read_f64(&mut self) -> Result<f64, Error> { Err(SyntaxError) }
fn read_f32(&mut self) -> Result<f32, Error> { Err(SyntaxError) }
fn read_char(&mut self) -> Result<char, Error> { Err(SyntaxError) }
fn read_str(&mut self) -> Result<String, Error> { Err(SyntaxError) }
// Compound types:
fn read_enum<T, F>(&mut self, _name: &str, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_variant<T, F>(&mut self, _names: &[&str], _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder, usize) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_variant_arg<T, F>(&mut self, _a_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_struct_variant<T, F>(&mut self, _names: &[&str], _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder, usize) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_struct_variant_field<T, F>(&mut self, _f_name: &str, _f_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_struct<T, F>(&mut self, _s_name: &str, _len: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_struct_field<T, F>(&mut self, _f_name: &str, _f_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple<T, F>(&mut self, _len: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple_arg<T, F>(&mut self, _a_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple_struct<T, F>(&mut self, _s_name: &str, _len: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple_struct_arg<T, F>(&mut self, _a_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
// Specialized types:
fn read_option<T, F>(&mut self, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder, bool) -> Result<T, Error>,
{
Err(SyntaxError)
}
#[inline]
fn read_seq<T, F>(&mut self, f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder, usize) -> Result<T, Error>,
{
let len = self.len;
f(self, len)
}
#[inline]
fn read_seq_elt<T, F>(&mut self, _idx: usize, f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
f(self)
}
fn read_map<T, F>(&mut self, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder, usize) -> Result<T, Error>,
{
Err(SyntaxError)
}
fn read_map_elt_key<T, F>(&mut self, _idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(SyntaxError)
}
fn read_map_elt_val<T, F>(&mut self, _idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut IsizeDecoder) -> Result<T, Error>,
{
Err(SyntaxError)
}
}
pub struct U8Decoder {
len: usize,
iter: vec::IntoIter<u8>,
}
impl U8Decoder {
#[inline]
pub fn new(values: Vec<u8>) -> U8Decoder {
U8Decoder {
len: values.len(),
iter: values.into_iter(),
}
}
}
impl rustc_serialize::Decoder for U8Decoder {
type Error = Error;
fn error(&mut self, msg: &str) -> Error {
OtherError(msg.to_string())
}
// Primitive types:
fn read_nil(&mut self) -> Result<(), Error> { Err(SyntaxError) }
fn read_usize(&mut self) -> Result<usize, Error> { Err(SyntaxError) }
fn read_u64(&mut self) -> Result<u64, Error> { Err(SyntaxError) }
fn read_u32(&mut self) -> Result<u32, Error> { Err(SyntaxError) }
fn read_u16(&mut self) -> Result<u16, Error> { Err(SyntaxError) }
#[inline]
fn read_u8(&mut self) -> Result<u8, Error> {
match self.iter.next() {
Some(value) => Ok(value),
None => Err(EndOfStream),
}
}
#[inline]
fn read_isize(&mut self) -> Result<isize, Error> { Err(SyntaxError) }
fn read_i64(&mut self) -> Result<i64, Error> { Err(SyntaxError) }
fn read_i32(&mut self) -> Result<i32, Error> { Err(SyntaxError) }
fn read_i16(&mut self) -> Result<i16, Error> { Err(SyntaxError) }
fn read_i8(&mut self) -> Result<i8, Error> { Err(SyntaxError) }
fn read_bool(&mut self) -> Result<bool, Error> { Err(SyntaxError) }
fn read_f64(&mut self) -> Result<f64, Error> { Err(SyntaxError) }
fn read_f32(&mut self) -> Result<f32, Error> { Err(SyntaxError) }
fn read_char(&mut self) -> Result<char, Error> { Err(SyntaxError) }
fn read_str(&mut self) -> Result<String, Error> { Err(SyntaxError) }
// Compound types:
fn read_enum<T, F>(&mut self, _name: &str, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_variant<T, F>(&mut self, _names: &[&str], _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder, usize) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_variant_arg<T, F>(&mut self, _a_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_struct_variant<T, F>(&mut self, _names: &[&str], _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder, usize) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_enum_struct_variant_field<T, F>(&mut self, _f_name: &str, _f_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_struct<T, F>(&mut self, _s_name: &str, _len: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_struct_field<T, F>(&mut self, _f_name: &str, _f_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple<T, F>(&mut self, _len: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple_arg<T, F>(&mut self, _a_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple_struct<T, F>(&mut self, _s_name: &str, _len: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
fn read_tuple_struct_arg<T, F>(&mut self, _a_idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(Error::SyntaxError)
}
// Specialized types:
fn read_option<T, F>(&mut self, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder, bool) -> Result<T, Error>,
{
Err(SyntaxError)
}
#[inline]
fn read_seq<T, F>(&mut self, f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder, usize) -> Result<T, Error>,
{
let len = self.len;
f(self, len)
}
#[inline]
fn read_seq_elt<T, F>(&mut self, _idx: usize, f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
f(self)
}
fn read_map<T, F>(&mut self, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder, usize) -> Result<T, Error>,
{
Err(SyntaxError)
}
fn read_map_elt_key<T, F>(&mut self, _idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(SyntaxError)
}
fn read_map_elt_val<T, F>(&mut self, _idx: usize, _f: F) -> Result<T, Error> where
F: FnOnce(&mut U8Decoder) -> Result<T, Error>,
{
Err(SyntaxError)
}
}
}
//////////////////////////////////////////////////////////////////////////////
mod deserializer {
//use std::num;
use std::vec;
use super::Error;
use super::Error::{EndOfStream, SyntaxError};
use self::State::{StartState, SepOrEndState, EndState};
use serde::de;
#[derive(PartialEq, Show)]
enum State {
StartState,
SepOrEndState,
EndState,
}
pub struct IsizeDeserializer {
state: State,
len: usize,
iter: vec::IntoIter<isize>,
}
impl IsizeDeserializer {
#[inline]
pub fn new(values: Vec<isize>) -> IsizeDeserializer {
IsizeDeserializer {
state: StartState,
len: values.len(),
iter: values.into_iter(),
}
}
}
impl Iterator for IsizeDeserializer {
type Item = Result<de::Token, Error>;
#[inline]
fn next(&mut self) -> Option<Result<de::Token, Error>> {
match self.state {
StartState => {
self.state = SepOrEndState;
Some(Ok(de::Token::SeqStart(self.len)))
}
SepOrEndState => {
match self.iter.next() {
Some(value) => {
Some(Ok(de::Token::Isize(value)))
}
None => {
self.state = EndState;
Some(Ok(de::Token::End))
}
}
}
EndState => {
None
}
}
}
}
impl de::Deserializer<Error> for IsizeDeserializer {
#[inline]
fn end_of_stream_error(&mut self) -> Error {
EndOfStream
}
#[inline]
fn syntax_error(&mut self, _token: de::Token, _expected: &[de::TokenKind]) -> Error {
SyntaxError
}
#[inline]
fn unexpected_name_error(&mut self, _token: de::Token) -> Error {
SyntaxError
}
#[inline]
fn conversion_error(&mut self, _token: de::Token) -> Error {
SyntaxError
}
#[inline]
fn missing_field<
T: de::Deserialize<IsizeDeserializer, Error>
>(&mut self, _field: &'static str) -> Result<T, Error> {
Err(SyntaxError)
}
}
pub struct U8Deserializer {
state: State,
len: usize,
iter: vec::IntoIter<u8>,
}
impl U8Deserializer {
#[inline]
pub fn new(values: Vec<u8>) -> U8Deserializer {
U8Deserializer {
state: StartState,
len: values.len(),
iter: values.into_iter(),
}
}
}
impl Iterator for U8Deserializer {
type Item = Result<de::Token, Error>;
#[inline]
fn next(&mut self) -> Option<Result<de::Token, Error>> {
match self.state {
StartState => {
self.state = SepOrEndState;
Some(Ok(de::Token::SeqStart(self.len)))
}
SepOrEndState => {
match self.iter.next() {
Some(value) => {
Some(Ok(de::Token::U8(value)))
}
None => {
self.state = EndState;
Some(Ok(de::Token::End))
}
}
}
EndState => {
None
}
}
}
}
impl de::Deserializer<Error> for U8Deserializer {
#[inline]
fn end_of_stream_error(&mut self) -> Error {
EndOfStream
}
#[inline]
fn syntax_error(&mut self, _token: de::Token, _expected: &[de::TokenKind]) -> Error {
SyntaxError
}
#[inline]
fn unexpected_name_error(&mut self, _token: de::Token) -> Error {
SyntaxError
}
#[inline]
fn conversion_error(&mut self, _token: de::Token) -> Error {
SyntaxError
}
#[inline]
fn missing_field<
T: de::Deserialize<U8Deserializer, Error>
>(&mut self, _field: &'static str) -> Result<T, Error> {
Err(SyntaxError)
}
}
}
//////////////////////////////////////////////////////////////////////////////
fn run_decoder<
D: Decoder<Error=Error>,
T: Clone + PartialEq + Show + Decodable
>(mut d: D, value: T) {
let v = Decodable::decode(&mut d);
assert_eq!(Ok(value), v);
}
fn run_deserializer<
D: Deserializer<E>,
E: Show,
T: Clone + PartialEq + Show + Deserialize<D, E>
>(mut d: D, value: T) {
let v: T = Deserialize::deserialize(&mut d).unwrap();
assert_eq!(value, v);
}
#[bench]
fn bench_decoder_int_000(b: &mut Bencher) {
b.iter(|| {
let v: Vec<isize> = vec!();
run_decoder(decoder::IsizeDecoder::new(v.clone()), v)
})
}
#[bench]
fn bench_decoder_int_003(b: &mut Bencher) {
b.iter(|| {
let v: Vec<isize> = vec!(1, 2, 3);
run_decoder(decoder::IsizeDecoder::new(v.clone()), v)
})
}
#[bench]
fn bench_decoder_int_100(b: &mut Bencher) {
b.iter(|| {
let v: Vec<isize> = range(0is, 100).collect();
run_decoder(decoder::IsizeDecoder::new(v.clone()), v)
})
}
#[bench]
fn bench_decoder_u8_000(b: &mut Bencher) {
b.iter(|| {
let v: Vec<u8> = vec!();
run_decoder(decoder::U8Decoder::new(v.clone()), v)
})
}
#[bench]
fn bench_decoder_u8_003(b: &mut Bencher) {
b.iter(|| {
let v: Vec<u8> = vec!(1, 2, 3);
run_decoder(decoder::U8Decoder::new(v.clone()), v)
})
}
#[bench]
fn bench_decoder_u8_100(b: &mut Bencher) {
b.iter(|| {
let v: Vec<u8> = range(0u8, 100).collect();
run_decoder(decoder::U8Decoder::new(v.clone()), v)
})
}
#[bench]
fn bench_deserializer_int_000(b: &mut Bencher) {
b.iter(|| {
let v: Vec<isize> = vec!();
run_deserializer(deserializer::IsizeDeserializer::new(v.clone()), v)
})
}
#[bench]
fn bench_deserializer_int_003(b: &mut Bencher) {
b.iter(|| {
let v: Vec<isize> = vec!(1, 2, 3);
run_deserializer(deserializer::IsizeDeserializer::new(v.clone()), v)
})
}
#[bench]
fn bench_deserializer_int_100(b: &mut Bencher) {
b.iter(|| {
let v: Vec<isize> = range(0is, 100).collect();
run_deserializer(deserializer::IsizeDeserializer::new(v.clone()), v)
})
}
#[bench]
fn bench_deserializer_u8_000(b: &mut Bencher) {
b.iter(|| {
let v: Vec<u8> = vec!();
run_deserializer(deserializer::U8Deserializer::new(v.clone()), v)
})
}
#[bench]
fn bench_deserializer_u8_003(b: &mut Bencher) {
b.iter(|| {
let v: Vec<u8> = vec!(1, 2, 3);
run_deserializer(deserializer::U8Deserializer::new(v.clone()), v)
})
}
#[bench]
fn bench_deserializer_u8_100(b: &mut Bencher) {
b.iter(|| {
let v: Vec<u8> = range(0u8, 100).collect();
run_deserializer(deserializer::U8Deserializer::new(v.clone()), v)
})
}
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