bff3748731
Allow a deriving instance using the generic code to short-circuit for any non-matching enum variants (grouping them all into a _ match), reducing the number of arms required. Use this to speed up the Eq & TotalEq implementations.
49 lines
1.3 KiB
Rust
49 lines
1.3 KiB
Rust
// Copyright 2013 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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#[deriving(Eq, TotalEq, Ord, TotalOrd)]
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struct S<T> {
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x: T,
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y: T
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}
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pub fn main() {
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let s1 = S {x: 1, y: 1}, s2 = S {x: 1, y: 2};
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// in order for both Ord and TotalOrd
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let ss = [s1, s2];
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for ss.eachi |i, s1| {
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for ss.eachi |j, s2| {
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let ord = i.cmp(&j);
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let eq = i == j;
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let lt = i < j, le = i <= j;
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let gt = i > j, ge = i >= j;
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// Eq
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assert_eq!(*s1 == *s2, eq);
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assert_eq!(*s1 != *s2, !eq);
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// TotalEq
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assert_eq!(s1.equals(s2), eq);
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// Ord
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assert_eq!(*s1 < *s2, lt);
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assert_eq!(*s1 > *s2, gt);
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assert_eq!(*s1 <= *s2, le);
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assert_eq!(*s1 >= *s2, ge);
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// TotalOrd
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assert_eq!(s1.cmp(s2), ord);
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}
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}
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} |