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.
52 lines
1.4 KiB
Rust
52 lines
1.4 KiB
Rust
// xfail-test #5530
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// 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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enum ES<T> {
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ES1 { x: T },
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ES2 { x: T, y: T }
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}
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pub fn main() {
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let es11 = ES1 {x: 1}, es12 = ES1 {x: 2}, es21 = ES2 {x: 1, y: 1}, es22 = ES2 {x: 1, y: 2};
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// in order for both Ord and TotalOrd
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let ess = [es11, es12, es21, es22];
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for ess.eachi |i, es1| {
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for ess.eachi |j, es2| {
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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!(*es1 == *es2, eq);
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assert_eq!(*es1 != *es2, !eq);
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// TotalEq
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assert_eq!(es1.equals(es2), eq);
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// Ord
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assert_eq!(*es1 < *es2, lt);
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assert_eq!(*es1 > *es2, gt);
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assert_eq!(*es1 <= *es2, le);
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assert_eq!(*es1 >= *es2, ge);
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// TotalOrd
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assert_eq!(es1.cmp(es2), ord);
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}
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}
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} |