87 lines
2.3 KiB
Rust
87 lines
2.3 KiB
Rust
#![allow(unused)]
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//#![feature(plugin)]#![plugin(clippy)]
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use std::collections::{HashMap, HashSet};
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use std::cmp::Eq;
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use std::hash::{Hash, BuildHasher};
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trait Foo<T>: Sized {
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fn make() -> (Self, Self);
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}
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impl<K: Hash + Eq, V> Foo<i8> for HashMap<K, V> {
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fn make() -> (Self, Self) {
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// OK, don't suggest to modify these
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let _: HashMap<i32, i32> = HashMap::new();
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let _: HashSet<i32> = HashSet::new();
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(HashMap::new(), HashMap::with_capacity(10))
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}
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}
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impl<K: Hash + Eq, V> Foo<i8> for (HashMap<K, V>,) {
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fn make() -> (Self, Self) {
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((HashMap::new(),), (HashMap::with_capacity(10),))
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}
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}
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impl Foo<i16> for HashMap<String, String> {
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fn make() -> (Self, Self) {
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(HashMap::new(), HashMap::with_capacity(10))
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}
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}
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impl<K: Hash + Eq, V, S: BuildHasher + Default> Foo<i32> for HashMap<K, V, S> {
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fn make() -> (Self, Self) {
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(HashMap::default(), HashMap::with_capacity_and_hasher(10, Default::default()))
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}
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}
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impl<S: BuildHasher + Default> Foo<i64> for HashMap<String, String, S> {
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fn make() -> (Self, Self) {
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(HashMap::default(), HashMap::with_capacity_and_hasher(10, Default::default()))
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}
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}
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impl<T: Hash + Eq> Foo<i8> for HashSet<T> {
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fn make() -> (Self, Self) {
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(HashSet::new(), HashSet::with_capacity(10))
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}
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}
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impl Foo<i16> for HashSet<String> {
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fn make() -> (Self, Self) {
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(HashSet::new(), HashSet::with_capacity(10))
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}
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}
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impl<T: Hash + Eq, S: BuildHasher + Default> Foo<i32> for HashSet<T, S> {
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fn make() -> (Self, Self) {
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(HashSet::default(), HashSet::with_capacity_and_hasher(10, Default::default()))
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}
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}
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impl<S: BuildHasher + Default> Foo<i64> for HashSet<String, S> {
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fn make() -> (Self, Self) {
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(HashSet::default(), HashSet::with_capacity_and_hasher(10, Default::default()))
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}
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}
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pub fn foo(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {
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}
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macro_rules! gen {
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(impl) => {
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impl<K: Hash + Eq, V> Foo<u8> for HashMap<K, V> {
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fn make() -> (Self, Self) {
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(HashMap::new(), HashMap::with_capacity(10))
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}
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}
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};
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(fn $name:ident) => {
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pub fn $name(_map: &mut HashMap<i32, i32>, _set: &mut HashSet<i32>) {
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}
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}
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}
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gen!(impl);
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gen!(fn bar);
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fn main() {}
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