97 lines
2.1 KiB
Rust
97 lines
2.1 KiB
Rust
#![feature(test)]
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extern crate test;
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use std::{
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fmt::{self, Display},
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str::FromStr,
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};
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bitflags::bitflags! {
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struct Flags10: u32 {
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const A = 0b0000_0000_0000_0001;
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const B = 0b0000_0000_0000_0010;
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const C = 0b0000_0000_0000_0100;
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const D = 0b0000_0000_0000_1000;
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const E = 0b0000_0000_0001_0000;
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const F = 0b0000_0000_0010_0000;
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const G = 0b0000_0000_0100_0000;
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const H = 0b0000_0000_1000_0000;
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const I = 0b0000_0001_0000_0000;
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const J = 0b0000_0010_0000_0000;
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}
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}
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impl FromStr for Flags10 {
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type Err = bitflags::parser::ParseError;
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fn from_str(flags: &str) -> Result<Self, Self::Err> {
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Ok(Flags10(flags.parse()?))
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}
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}
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impl Display for Flags10 {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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Display::fmt(&self.0, f)
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}
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}
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#[bench]
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fn format_flags_1_present(b: &mut test::Bencher) {
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b.iter(|| Flags10::J.to_string())
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}
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#[bench]
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fn format_flags_5_present(b: &mut test::Bencher) {
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b.iter(|| (Flags10::F | Flags10::G | Flags10::H | Flags10::I | Flags10::J).to_string())
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}
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#[bench]
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fn format_flags_10_present(b: &mut test::Bencher) {
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b.iter(|| {
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(Flags10::A
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| Flags10::B
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| Flags10::C
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| Flags10::D
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| Flags10::E
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| Flags10::F
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| Flags10::G
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| Flags10::H
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| Flags10::I
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| Flags10::J)
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.to_string()
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})
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}
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#[bench]
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fn parse_flags_1_10(b: &mut test::Bencher) {
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b.iter(|| {
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let flags: Flags10 = "J".parse().unwrap();
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flags
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})
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}
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#[bench]
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fn parse_flags_5_10(b: &mut test::Bencher) {
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b.iter(|| {
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let flags: Flags10 = "F | G | H | I | J".parse().unwrap();
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flags
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})
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}
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#[bench]
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fn parse_flags_10_10(b: &mut test::Bencher) {
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b.iter(|| {
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let flags: Flags10 = "A | B | C | D | E | F | G | H | I | J".parse().unwrap();
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flags
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})
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}
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#[bench]
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fn parse_flags_1_10_hex(b: &mut test::Bencher) {
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b.iter(|| {
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let flags: Flags10 = "0xFF".parse().unwrap();
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flags
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})
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}
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