104 lines
2.9 KiB
Rust
104 lines
2.9 KiB
Rust
// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
|
|
// file at the top-level directory of this distribution.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
|
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
|
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
|
|
// option. This file may not be copied, modified, or distributed
|
|
// except according to those terms.
|
|
|
|
|
|
#![allow(unused)]
|
|
|
|
use std::collections::{HashMap, HashSet};
|
|
use std::cmp::Eq;
|
|
use std::hash::{Hash, BuildHasher};
|
|
|
|
pub trait Foo<T>: Sized {
|
|
fn make() -> (Self, Self);
|
|
}
|
|
|
|
impl<K: Hash + Eq, V> Foo<i8> for HashMap<K, V> {
|
|
fn make() -> (Self, Self) {
|
|
// OK, don't suggest to modify these
|
|
let _: HashMap<i32, i32> = HashMap::new();
|
|
let _: HashSet<i32> = HashSet::new();
|
|
|
|
(HashMap::new(), HashMap::with_capacity(10))
|
|
}
|
|
}
|
|
impl<K: Hash + Eq, V> Foo<i8> for (HashMap<K, V>,) {
|
|
fn make() -> (Self, Self) {
|
|
((HashMap::new(),), (HashMap::with_capacity(10),))
|
|
}
|
|
}
|
|
impl Foo<i16> for HashMap<String, String> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::new(), HashMap::with_capacity(10))
|
|
}
|
|
}
|
|
|
|
impl<K: Hash + Eq, V, S: BuildHasher + Default> Foo<i32> for HashMap<K, V, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::default(), HashMap::with_capacity_and_hasher(10, S::default()))
|
|
}
|
|
}
|
|
impl<S: BuildHasher + Default> Foo<i64> for HashMap<String, String, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::default(), HashMap::with_capacity_and_hasher(10, S::default()))
|
|
}
|
|
}
|
|
|
|
|
|
impl<T: Hash + Eq> Foo<i8> for HashSet<T> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::new(), HashSet::with_capacity(10))
|
|
}
|
|
}
|
|
impl Foo<i16> for HashSet<String> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::new(), HashSet::with_capacity(10))
|
|
}
|
|
}
|
|
|
|
impl<T: Hash + Eq, S: BuildHasher + Default> Foo<i32> for HashSet<T, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::default(), HashSet::with_capacity_and_hasher(10, S::default()))
|
|
}
|
|
}
|
|
impl<S: BuildHasher + Default> Foo<i64> for HashSet<String, S> {
|
|
fn make() -> (Self, Self) {
|
|
(HashSet::default(), HashSet::with_capacity_and_hasher(10, S::default()))
|
|
}
|
|
}
|
|
|
|
pub fn foo(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {
|
|
}
|
|
|
|
macro_rules! gen {
|
|
(impl) => {
|
|
impl<K: Hash + Eq, V> Foo<u8> for HashMap<K, V> {
|
|
fn make() -> (Self, Self) {
|
|
(HashMap::new(), HashMap::with_capacity(10))
|
|
}
|
|
}
|
|
};
|
|
|
|
(fn $name:ident) => {
|
|
pub fn $name(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {
|
|
}
|
|
}
|
|
}
|
|
|
|
gen!(impl);
|
|
gen!(fn bar);
|
|
|
|
// When the macro is in a different file, the suggestion spans can't be combined properly
|
|
// and should not cause an ICE
|
|
// See #2707
|
|
#[macro_use]
|
|
#[path = "../auxiliary/test_macro.rs"] pub mod test_macro;
|
|
__implicit_hasher_test_macro!(impl<K, V> for HashMap<K, V> where V: test_macro::A);
|
|
|
|
fn main() {}
|