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