| // Protocol Buffers - Google's data interchange format |
| // Copyright 2023 Google LLC. All rights reserved. |
| // |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file or at |
| // https://developers.google.com/open-source/licenses/bsd |
| |
| use crate::{ |
| Mut, MutProxy, Proxied, SettableValue, View, ViewProxy, |
| __internal::Private, |
| __runtime::{InnerMap, InnerMapMut, RawMap, RawMapIter}, |
| }; |
| use std::marker::PhantomData; |
| |
| #[repr(transparent)] |
| pub struct MapView<'msg, K: ?Sized, V: ?Sized> { |
| raw: RawMap, |
| _phantom: PhantomData<(&'msg K, &'msg V)>, |
| } |
| |
| impl<'msg, K: ?Sized, V: ?Sized> Copy for MapView<'msg, K, V> {} |
| impl<'msg, K: ?Sized, V: ?Sized> Clone for MapView<'msg, K, V> { |
| fn clone(&self) -> Self { |
| *self |
| } |
| } |
| |
| unsafe impl<'msg, K: ?Sized, V: ?Sized> Sync for MapView<'msg, K, V> {} |
| unsafe impl<'msg, K: ?Sized, V: ?Sized> Send for MapView<'msg, K, V> {} |
| |
| impl<'msg, K: ?Sized, V: ?Sized> std::fmt::Debug for MapView<'msg, K, V> { |
| fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { |
| f.debug_tuple("MapView") |
| .field(&std::any::type_name::<K>()) |
| .field(&std::any::type_name::<V>()) |
| .finish() |
| } |
| } |
| |
| pub struct MapMut<'msg, K: ?Sized, V: ?Sized> { |
| pub(crate) inner: InnerMapMut<'msg>, |
| _phantom: PhantomData<(&'msg mut K, &'msg mut V)>, |
| } |
| |
| impl<'msg, K: ?Sized, V: ?Sized> MapMut<'msg, K, V> { |
| pub fn inner(&self, _private: Private) -> InnerMapMut { |
| self.inner |
| } |
| } |
| |
| unsafe impl<'msg, K: ?Sized, V: ?Sized> Sync for MapMut<'msg, K, V> {} |
| |
| impl<'msg, K: ?Sized, V: ?Sized> std::fmt::Debug for MapMut<'msg, K, V> { |
| fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { |
| f.debug_tuple("MapMut") |
| .field(&std::any::type_name::<K>()) |
| .field(&std::any::type_name::<V>()) |
| .finish() |
| } |
| } |
| |
| pub struct Map<K: ?Sized + Proxied, V: ?Sized + ProxiedInMapValue<K>> { |
| inner: InnerMap, |
| _phantom: PhantomData<(PhantomData<K>, PhantomData<V>)>, |
| } |
| |
| impl<K: ?Sized + Proxied, V: ?Sized + ProxiedInMapValue<K>> Drop for Map<K, V> { |
| fn drop(&mut self) { |
| // SAFETY: |
| // - `drop` is only called once. |
| // - 'map_free` is only called here. |
| unsafe { V::map_free(Private, self) } |
| } |
| } |
| |
| pub trait ProxiedInMapValue<K>: Proxied |
| where |
| K: Proxied + ?Sized, |
| { |
| fn map_new(_private: Private) -> Map<K, Self>; |
| |
| /// # Safety |
| /// - After `map_free`, no other methods on the input are safe to call. |
| unsafe fn map_free(_private: Private, map: &mut Map<K, Self>); |
| |
| fn map_clear(map: Mut<'_, Map<K, Self>>); |
| fn map_len(map: View<'_, Map<K, Self>>) -> usize; |
| fn map_insert(map: Mut<'_, Map<K, Self>>, key: View<'_, K>, value: View<'_, Self>) -> bool; |
| fn map_get<'a>(map: View<'a, Map<K, Self>>, key: View<'_, K>) -> Option<View<'a, Self>>; |
| fn map_remove(map: Mut<'_, Map<K, Self>>, key: View<'_, K>) -> bool; |
| |
| fn map_iter(map: View<'_, Map<K, Self>>) -> MapIter<'_, K, Self>; |
| fn map_iter_next<'a>(iter: &mut MapIter<'a, K, Self>) -> Option<(View<'a, K>, View<'a, Self>)>; |
| } |
| |
| impl<K: Proxied + ?Sized, V: ProxiedInMapValue<K> + ?Sized> Proxied for Map<K, V> { |
| type View<'msg> = MapView<'msg, K, V> where K: 'msg, V: 'msg; |
| type Mut<'msg> = MapMut<'msg, K, V> where K: 'msg, V: 'msg; |
| } |
| |
| impl<'msg, K: Proxied + ?Sized, V: ProxiedInMapValue<K> + ?Sized> SettableValue<Map<K, V>> |
| for MapView<'msg, K, V> |
| { |
| fn set_on<'b>(self, _private: Private, mut mutator: Mut<'b, Map<K, V>>) |
| where |
| Map<K, V>: 'b, |
| { |
| mutator.copy_from(self); |
| } |
| } |
| |
| impl<'msg, K: Proxied + ?Sized, V: ProxiedInMapValue<K> + ?Sized> ViewProxy<'msg> |
| for MapView<'msg, K, V> |
| { |
| type Proxied = Map<K, V>; |
| |
| fn as_view(&self) -> View<'_, Self::Proxied> { |
| *self |
| } |
| |
| fn into_view<'shorter>(self) -> View<'shorter, Self::Proxied> |
| where |
| 'msg: 'shorter, |
| { |
| MapView { raw: self.raw, _phantom: PhantomData } |
| } |
| } |
| |
| impl<'msg, K: Proxied + ?Sized, V: ProxiedInMapValue<K> + ?Sized> ViewProxy<'msg> |
| for MapMut<'msg, K, V> |
| { |
| type Proxied = Map<K, V>; |
| |
| fn as_view(&self) -> View<'_, Self::Proxied> { |
| MapView { raw: self.inner.raw, _phantom: PhantomData } |
| } |
| |
| fn into_view<'shorter>(self) -> View<'shorter, Self::Proxied> |
| where |
| 'msg: 'shorter, |
| { |
| MapView { raw: self.inner.raw, _phantom: PhantomData } |
| } |
| } |
| |
| impl<'msg, K: Proxied + ?Sized, V: ProxiedInMapValue<K> + ?Sized> MutProxy<'msg> |
| for MapMut<'msg, K, V> |
| { |
| fn as_mut(&mut self) -> Mut<'_, Self::Proxied> { |
| MapMut { inner: self.inner, _phantom: PhantomData } |
| } |
| |
| fn into_mut<'shorter>(self) -> Mut<'shorter, Self::Proxied> |
| where |
| 'msg: 'shorter, |
| { |
| MapMut { inner: self.inner, _phantom: PhantomData } |
| } |
| } |
| |
| impl<K, V> Map<K, V> |
| where |
| K: Proxied + ?Sized, |
| V: ProxiedInMapValue<K> + ?Sized, |
| { |
| pub fn new() -> Self { |
| V::map_new(Private) |
| } |
| |
| pub fn as_mut(&mut self) -> MapMut<'_, K, V> { |
| MapMut { inner: self.inner.as_mut(), _phantom: PhantomData } |
| } |
| |
| pub fn as_view(&self) -> MapView<'_, K, V> { |
| MapView { raw: self.inner.raw, _phantom: PhantomData } |
| } |
| |
| #[doc(hidden)] |
| pub fn from_inner(_private: Private, inner: InnerMap) -> Self { |
| Self { inner, _phantom: PhantomData } |
| } |
| |
| pub fn as_raw(&self, _private: Private) -> RawMap { |
| self.inner.raw |
| } |
| } |
| |
| impl<K, V> Default for Map<K, V> |
| where |
| K: Proxied + ?Sized, |
| V: ProxiedInMapValue<K> + ?Sized, |
| { |
| fn default() -> Self { |
| Map::new() |
| } |
| } |
| |
| #[doc(hidden)] |
| impl<'msg, K: ?Sized, V: ?Sized> MapView<'msg, K, V> { |
| #[doc(hidden)] |
| pub fn as_raw(&self, _private: Private) -> RawMap { |
| self.raw |
| } |
| |
| /// # Safety |
| /// - `raw` must be valid to read from for `'msg`. |
| #[doc(hidden)] |
| pub unsafe fn from_raw(_private: Private, raw: RawMap) -> Self { |
| Self { raw, _phantom: PhantomData } |
| } |
| } |
| |
| impl<'msg, K, V> MapView<'msg, K, V> |
| where |
| K: Proxied + ?Sized + 'msg, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg, |
| { |
| pub fn get<'a>(self, key: impl Into<View<'a, K>>) -> Option<View<'msg, V>> |
| where |
| K: 'a, |
| { |
| V::map_get(self, key.into()) |
| } |
| |
| pub fn len(self) -> usize { |
| V::map_len(self) |
| } |
| |
| pub fn is_empty(self) -> bool { |
| self.len() == 0 |
| } |
| |
| /// Returns an iterator visiting all key-value pairs in arbitrary order. |
| /// |
| /// The iterator element type is `(View<K>, View<V>)`. |
| /// This is an alias for `<Self as IntoIterator>::into_iter`. |
| pub fn iter(self) -> MapIter<'msg, K, V> { |
| self.into_iter() |
| } |
| |
| /// Returns an iterator visiting all keys in arbitrary order. |
| /// |
| /// The iterator element type is `View<K>`. |
| pub fn keys(self) -> impl Iterator<Item = View<'msg, K>> + 'msg { |
| self.into_iter().map(|(k, _)| k) |
| } |
| |
| /// Returns an iterator visiting all values in arbitrary order. |
| /// |
| /// The iterator element type is `View<V>`. |
| pub fn values(self) -> impl Iterator<Item = View<'msg, V>> + 'msg { |
| self.into_iter().map(|(_, v)| v) |
| } |
| } |
| |
| #[doc(hidden)] |
| impl<'msg, K: ?Sized, V: ?Sized> MapMut<'msg, K, V> { |
| /// # Safety |
| /// - `inner` must be valid to read and write from for `'msg`. |
| #[doc(hidden)] |
| pub unsafe fn from_inner(_private: Private, inner: InnerMapMut<'msg>) -> Self { |
| Self { inner, _phantom: PhantomData } |
| } |
| |
| #[doc(hidden)] |
| pub fn as_raw(&mut self, _private: Private) -> RawMap { |
| self.inner.raw |
| } |
| } |
| |
| impl<'msg, K, V> MapMut<'msg, K, V> |
| where |
| K: Proxied + ?Sized + 'msg, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg, |
| { |
| pub fn len(&self) -> usize { |
| self.as_view().len() |
| } |
| |
| pub fn is_empty(&self) -> bool { |
| self.len() == 0 |
| } |
| |
| /// Adds a key-value pair to the map. |
| /// |
| /// Returns `true` if the entry was newly inserted. |
| pub fn insert<'a, 'b>( |
| &mut self, |
| key: impl Into<View<'a, K>>, |
| value: impl Into<View<'b, V>>, |
| ) -> bool |
| where |
| K: 'a, |
| V: 'b, |
| { |
| V::map_insert(self.as_mut(), key.into(), value.into()) |
| } |
| |
| pub fn remove<'a>(&mut self, key: impl Into<View<'a, K>>) -> bool |
| where |
| K: 'a, |
| { |
| V::map_remove(self.as_mut(), key.into()) |
| } |
| |
| pub fn clear(&mut self) { |
| V::map_clear(self.as_mut()) |
| } |
| |
| pub fn get<'a>(&self, key: impl Into<View<'a, K>>) -> Option<View<V>> |
| where |
| K: 'a, |
| { |
| V::map_get(self.as_view(), key.into()) |
| } |
| |
| pub fn copy_from<'a, 'b>( |
| &mut self, |
| src: impl IntoIterator<Item = (impl Into<View<'a, K>>, impl Into<View<'b, V>>)>, |
| ) where |
| K: 'a, |
| V: 'b, |
| { |
| //TODO |
| self.clear(); |
| for (k, v) in src.into_iter() { |
| self.insert(k, v); |
| } |
| } |
| |
| /// Returns an iterator visiting all key-value pairs in arbitrary order. |
| /// |
| /// The iterator element type is `(View<K>, View<V>)`. |
| pub fn iter(&self) -> MapIter<'_, K, V> { |
| self.into_iter() |
| } |
| |
| /// Returns an iterator visiting all keys in arbitrary order. |
| /// |
| /// The iterator element type is `View<K>`. |
| pub fn keys(&self) -> impl Iterator<Item = View<'_, K>> + '_ { |
| self.as_view().keys() |
| } |
| |
| /// Returns an iterator visiting all values in arbitrary order. |
| /// |
| /// The iterator element type is `View<V>`. |
| pub fn values(&self) -> impl Iterator<Item = View<'_, V>> + '_ { |
| self.as_view().values() |
| } |
| } |
| |
| /// An iterator visiting all key-value pairs in arbitrary order. |
| /// |
| /// The iterator element type is `(View<Key>, View<Value>)`. |
| pub struct MapIter<'msg, K: ?Sized, V: ?Sized> { |
| raw: RawMapIter, |
| _phantom: PhantomData<(&'msg K, &'msg V)>, |
| } |
| |
| impl<'msg, K: ?Sized, V: ?Sized> MapIter<'msg, K, V> { |
| /// # Safety |
| /// - `raw` must be a valid instance of the raw iterator for `'msg`. |
| /// - The untyped `raw` iterator must be for a map of `K,V`. |
| /// - The backing map must be live and unmodified for `'msg`. |
| #[doc(hidden)] |
| pub unsafe fn from_raw(_private: Private, raw: RawMapIter) -> Self { |
| Self { raw, _phantom: PhantomData } |
| } |
| |
| #[doc(hidden)] |
| pub fn as_raw_mut(&mut self, _private: Private) -> &mut RawMapIter { |
| &mut self.raw |
| } |
| } |
| |
| impl<'msg, K, V> Iterator for MapIter<'msg, K, V> |
| where |
| K: Proxied + ?Sized + 'msg, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg, |
| { |
| type Item = (View<'msg, K>, View<'msg, V>); |
| |
| fn next(&mut self) -> Option<Self::Item> { |
| V::map_iter_next(self) |
| } |
| } |
| |
| impl<'msg, K, V> IntoIterator for MapView<'msg, K, V> |
| where |
| K: Proxied + ?Sized + 'msg, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg, |
| { |
| type IntoIter = MapIter<'msg, K, V>; |
| type Item = (View<'msg, K>, View<'msg, V>); |
| |
| fn into_iter(self) -> MapIter<'msg, K, V> { |
| V::map_iter(self) |
| } |
| } |
| |
| impl<'msg, K, V> IntoIterator for &'msg Map<K, V> |
| where |
| K: Proxied + ?Sized + 'msg, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg, |
| { |
| type IntoIter = MapIter<'msg, K, V>; |
| type Item = (View<'msg, K>, View<'msg, V>); |
| |
| fn into_iter(self) -> MapIter<'msg, K, V> { |
| self.as_view().into_iter() |
| } |
| } |
| |
| impl<'a, 'msg, K, V> IntoIterator for &'a MapView<'msg, K, V> |
| where |
| 'msg: 'a, |
| K: Proxied + ?Sized + 'msg, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg, |
| { |
| type IntoIter = MapIter<'msg, K, V>; |
| type Item = (View<'msg, K>, View<'msg, V>); |
| |
| fn into_iter(self) -> MapIter<'msg, K, V> { |
| (*self).into_iter() |
| } |
| } |
| |
| impl<'a, 'msg, K, V> IntoIterator for &'a MapMut<'msg, K, V> |
| where |
| 'msg: 'a, |
| K: Proxied + ?Sized + 'msg, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg, |
| { |
| type IntoIter = MapIter<'a, K, V>; |
| // The View's are valid for 'a instead of 'msg. |
| // This is because the mutator may mutate past 'a but before 'msg expires. |
| type Item = (View<'a, K>, View<'a, V>); |
| |
| fn into_iter(self) -> MapIter<'a, K, V> { |
| self.as_view().into_iter() |
| } |
| } |
| |
| impl<'msg, 'k, 'v, KView, VView, K, V> Extend<(KView, VView)> for MapMut<'msg, K, V> |
| where |
| K: Proxied + ?Sized + 'msg + 'k, |
| V: ProxiedInMapValue<K> + ?Sized + 'msg + 'v, |
| KView: Into<View<'k, K>>, |
| VView: Into<View<'v, V>>, |
| { |
| fn extend<T: IntoIterator<Item = (KView, VView)>>(&mut self, iter: T) { |
| for (k, v) in iter.into_iter() { |
| self.insert(k, v); |
| } |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests { |
| use super::*; |
| use crate::ProtoStr; |
| use googletest::prelude::*; |
| |
| #[test] |
| fn test_proxied_scalar() { |
| let mut map: Map<i32, i64> = Map::new(); |
| let mut map_mut = map.as_mut(); |
| map_mut.insert(1, 2); |
| assert_that!(map_mut.get(1), eq(Some(2))); |
| |
| let map_view_1 = map_mut.as_view(); |
| assert_that!(map_view_1.len(), eq(1)); |
| assert_that!(map_view_1.get(1), eq(Some(2))); |
| |
| map_mut.insert(3, 4); |
| |
| let map_view_2 = map_mut.into_view(); |
| assert_that!(map_view_2.len(), eq(2)); |
| assert_that!(map_view_2.get(3), eq(Some(4))); |
| |
| { |
| let map_view_3 = map_view_2.as_view(); |
| assert_that!(map_view_3.is_empty(), eq(false)); |
| } |
| |
| let map_view_4 = map_view_2.into_view(); |
| assert_that!(map_view_4.is_empty(), eq(false)); |
| } |
| |
| #[test] |
| fn test_proxied_str() { |
| let mut map: Map<ProtoStr, ProtoStr> = Map::new(); |
| let mut map_mut = map.as_mut(); |
| map_mut.insert("a", "b"); |
| |
| let map_view_1 = map_mut.as_view(); |
| assert_that!(map_view_1.len(), eq(1)); |
| assert_that!(map_view_1.get("a").unwrap(), eq("b")); |
| |
| map_mut.insert("c", "d"); |
| |
| let map_view_2 = map_mut.into_view(); |
| assert_that!(map_view_2.len(), eq(2)); |
| assert_that!(map_view_2.get("c").unwrap(), eq("d")); |
| |
| { |
| let map_view_3 = map_view_2.as_view(); |
| assert_that!(map_view_3.is_empty(), eq(false)); |
| } |
| |
| let map_view_4 = map_view_2.into_view(); |
| assert_that!(map_view_4.is_empty(), eq(false)); |
| } |
| |
| #[test] |
| fn test_proxied_iter() { |
| let mut map: Map<i32, ProtoStr> = Map::new(); |
| let mut map_mut = map.as_mut(); |
| map_mut.insert(15, "fizzbuzz"); |
| map_mut.insert(5, "buzz"); |
| map_mut.insert(3, "fizz"); |
| |
| // ProtoStr::from_str is necessary below because |
| // https://doc.rust-lang.org/std/primitive.tuple.html#impl-PartialEq-for-(T,) |
| // only compares where the types are the same, even when the tuple types can |
| // compare with each other. |
| // googletest-rust matchers also do not currently implement Clone. |
| assert_that!( |
| map.as_view().iter().collect::<Vec<_>>(), |
| unordered_elements_are![ |
| eq((3, ProtoStr::from_str("fizz"))), |
| eq((5, ProtoStr::from_str("buzz"))), |
| eq((15, ProtoStr::from_str("fizzbuzz"))) |
| ] |
| ); |
| assert_that!( |
| map.as_view().into_iter().collect::<Vec<_>>(), |
| unordered_elements_are![ |
| eq((3, ProtoStr::from_str("fizz"))), |
| eq((5, ProtoStr::from_str("buzz"))), |
| eq((15, ProtoStr::from_str("fizzbuzz"))) |
| ] |
| ); |
| assert_that!( |
| map.as_view().into_iter().collect::<Vec<_>>(), |
| unordered_elements_are![ |
| eq((3, ProtoStr::from_str("fizz"))), |
| eq((5, ProtoStr::from_str("buzz"))), |
| eq((15, ProtoStr::from_str("fizzbuzz"))) |
| ] |
| ); |
| } |
| |
| #[test] |
| fn test_overwrite_insert() { |
| let mut map: Map<i32, ProtoStr> = Map::new(); |
| let mut map_mut = map.as_mut(); |
| assert!(map_mut.insert(0, "fizz")); |
| // insert should return false when the key is already present |
| assert!(!map_mut.insert(0, "buzz")); |
| assert_that!( |
| map.as_mut().iter().collect::<Vec<_>>(), |
| unordered_elements_are![eq((0, ProtoStr::from_str("buzz"))),] |
| ); |
| } |
| |
| #[test] |
| fn test_extend() { |
| let mut map: Map<i32, ProtoStr> = Map::new(); |
| let mut map_mut = map.as_mut(); |
| |
| map_mut.extend([(0, ""); 0]); |
| assert_that!(map_mut.len(), eq(0)); |
| |
| map_mut.extend([(0, "fizz"), (1, "buzz"), (2, "fizzbuzz")]); |
| |
| assert_that!( |
| map.as_view().into_iter().collect::<Vec<_>>(), |
| unordered_elements_are![ |
| eq((0, ProtoStr::from_str("fizz"))), |
| eq((1, ProtoStr::from_str("buzz"))), |
| eq((2, ProtoStr::from_str("fizzbuzz"))) |
| ] |
| ); |
| |
| let mut map_2: Map<i32, ProtoStr> = Map::new(); |
| let mut map_2_mut = map_2.as_mut(); |
| map_2_mut.extend([(2, "bing"), (3, "bong")]); |
| |
| let mut map_mut = map.as_mut(); |
| map_mut.extend(&map_2); |
| |
| assert_that!( |
| map.as_view().into_iter().collect::<Vec<_>>(), |
| unordered_elements_are![ |
| eq((0, ProtoStr::from_str("fizz"))), |
| eq((1, ProtoStr::from_str("buzz"))), |
| eq((2, ProtoStr::from_str("bing"))), |
| eq((3, ProtoStr::from_str("bong"))) |
| ] |
| ); |
| } |
| |
| #[test] |
| fn test_copy_from() { |
| let mut map: Map<i32, ProtoStr> = Map::new(); |
| let mut map_mut = map.as_mut(); |
| map_mut.copy_from([(0, "fizz"), (1, "buzz"), (2, "fizzbuzz")]); |
| |
| assert_that!( |
| map.as_view().into_iter().collect::<Vec<_>>(), |
| unordered_elements_are![ |
| eq((0, ProtoStr::from_str("fizz"))), |
| eq((1, ProtoStr::from_str("buzz"))), |
| eq((2, ProtoStr::from_str("fizzbuzz"))) |
| ] |
| ); |
| |
| let mut map_2: Map<i32, ProtoStr> = Map::new(); |
| let mut map_2_mut = map_2.as_mut(); |
| map_2_mut.copy_from([(2, "bing"), (3, "bong")]); |
| |
| let mut map_mut = map.as_mut(); |
| map_mut.copy_from(&map_2); |
| |
| assert_that!( |
| map.as_view().into_iter().collect::<Vec<_>>(), |
| unordered_elements_are![ |
| eq((2, ProtoStr::from_str("bing"))), |
| eq((3, ProtoStr::from_str("bong"))) |
| ] |
| ); |
| } |
| |
| #[test] |
| fn test_all_maps_can_be_constructed() { |
| macro_rules! gen_proto_values { |
| ($key_t:ty, $($value_t:ty),*) => { |
| $( |
| let map = Map::<$key_t, $value_t>::new(); |
| assert_that!(map.as_view().len(), eq(0)); |
| )* |
| } |
| } |
| |
| macro_rules! gen_proto_keys { |
| ($($key_t:ty),*) => { |
| $( |
| gen_proto_values!($key_t, f32, f64, i32, u32, i64, bool, ProtoStr, [u8]); |
| )* |
| } |
| } |
| |
| gen_proto_keys!(i32, u32, i64, u64, bool, ProtoStr); |
| } |
| |
| #[test] |
| fn test_dbg() { |
| let mut map = Map::<i32, f64>::new(); |
| assert_that!(format!("{:?}", map.as_view()), eq("MapView(\"i32\", \"f64\")")); |
| assert_that!(format!("{:?}", map.as_mut()), eq("MapMut(\"i32\", \"f64\")")); |
| } |
| } |
