2012-12-10 19:32:48 -06:00
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// Copyright 2012 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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2012-09-18 17:52:21 -05:00
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#[legacy_modes];
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2012-09-05 14:32:05 -05:00
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use dvec::DVec;
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2012-06-04 12:44:19 -05:00
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2013-01-30 16:30:22 -06:00
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pub struct Entry<A,B> {key: A, value: B}
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2013-01-26 00:46:32 -06:00
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2013-01-30 16:30:22 -06:00
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pub struct alist<A,B> { eq_fn: fn@(A,A) -> bool, data: DVec<Entry<A,B>> }
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2012-03-07 17:13:31 -06:00
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2013-01-30 16:30:22 -06:00
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pub fn alist_add<A: Copy, B: Copy>(lst: alist<A,B>, k: A, v: B) {
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2013-01-26 00:46:32 -06:00
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lst.data.push(Entry{key:k, value:v});
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2012-03-07 17:13:31 -06:00
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}
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2013-01-30 16:30:22 -06:00
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pub fn alist_get<A: Copy, B: Copy>(lst: alist<A,B>, k: A) -> B {
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2012-03-07 17:13:31 -06:00
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let eq_fn = lst.eq_fn;
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2012-06-30 18:19:07 -05:00
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for lst.data.each |entry| {
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2012-08-01 19:30:05 -05:00
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if eq_fn(entry.key, k) { return entry.value; }
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2012-03-07 17:13:31 -06:00
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}
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fail;
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}
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#[inline]
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2013-01-30 16:30:22 -06:00
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pub fn new_int_alist<B: Copy>() -> alist<int, B> {
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2012-03-07 17:13:31 -06:00
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fn eq_int(&&a: int, &&b: int) -> bool { a == b }
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2013-01-08 16:00:45 -06:00
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return alist {eq_fn: eq_int, data: DVec()};
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2012-03-07 17:13:31 -06:00
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}
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#[inline]
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2013-01-30 16:30:22 -06:00
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pub fn new_int_alist_2<B: Copy>() -> alist<int, B> {
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2012-03-07 17:13:31 -06:00
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#[inline]
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fn eq_int(&&a: int, &&b: int) -> bool { a == b }
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2013-01-08 16:00:45 -06:00
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return alist {eq_fn: eq_int, data: DVec()};
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2012-09-18 17:52:21 -05:00
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}
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