feanor_math/seq/
map.rs

1use std::marker::PhantomData;
2
3use super::{SwappableVectorViewMut, VectorFn, VectorView, VectorViewMut};
4
5pub struct VectorViewMap<V: VectorView<T>, T: ?Sized, U: ?Sized, F: for<'a> Fn(&'a T) -> &'a U> {
6    base: V,
7    mapping_fn: F,
8    elements: PhantomData<(*const T, *const U)>
9}
10
11impl<V: Clone + VectorView<T>, T: ?Sized, U: ?Sized, F: Clone + for<'a> Fn(&'a T) -> &'a U> Clone for VectorViewMap<V, T, U, F> {
12    
13    fn clone(&self) -> Self {
14        Self {
15            mapping_fn: self.mapping_fn.clone(),
16            base: self.base.clone(),
17            elements: PhantomData
18        }
19    }
20}
21
22impl<V: Copy + VectorView<T>, T: ?Sized, U: ?Sized, F: Copy + for<'a> Fn(&'a T) -> &'a U> Copy for VectorViewMap<V, T, U, F> {}
23
24impl<V: VectorView<T>, T: ?Sized, U: ?Sized, F: for<'a> Fn(&'a T) -> &'a U> VectorViewMap<V, T, U, F> {
25
26    pub fn new(base: V, mapping_fn: F) -> Self {
27        Self {
28            base: base,
29            mapping_fn: mapping_fn,
30            elements: PhantomData
31        }
32    }
33}
34
35impl<V: VectorView<T>, T: ?Sized, U: ?Sized, F: for<'a> Fn(&'a T) -> &'a U> VectorView<U> for VectorViewMap<V, T, U, F> {
36
37    fn at(&self, i: usize) -> &U {
38        (self.mapping_fn)(self.base.at(i))
39    }
40
41    fn len(&self) -> usize {
42        self.base.len()
43    }
44}
45
46pub struct VectorViewMapMut<V: VectorViewMut<T>, T: ?Sized, U: ?Sized, F_const: for<'a> Fn(&'a T) -> &'a U, F_mut: for<'a> FnMut(&'a mut T) -> &'a mut U> {
47    base: V,
48    mapping_fns: (F_const, F_mut),
49    elements: PhantomData<(*const T, *const U)>
50}
51
52impl<V: VectorViewMut<T>, T: ?Sized, U: ?Sized, F_const: for<'a> Fn(&'a T) -> &'a U, F_mut: for<'a> FnMut(&'a mut T) -> &'a mut U> VectorViewMapMut<V, T, U, F_const, F_mut> {
53
54    pub fn new(base: V, mapping_fns: (F_const, F_mut)) -> Self {
55        Self {
56            base: base,
57            mapping_fns: mapping_fns,
58            elements: PhantomData
59        }
60    }
61}
62
63impl<V: VectorViewMut<T>, T: ?Sized, U: ?Sized, F_const: for<'a> Fn(&'a T) -> &'a U, F_mut: for<'a> FnMut(&'a mut T) -> &'a mut U> VectorView<U> for VectorViewMapMut<V, T, U, F_const, F_mut> {
64
65    fn at(&self, i: usize) -> &U {
66        (self.mapping_fns.0)(self.base.at(i))
67    }
68
69    fn len(&self) -> usize {
70        self.base.len()
71    }
72}
73
74impl<V: VectorViewMut<T>, T: ?Sized, U: ?Sized, F_const: for<'a> Fn(&'a T) -> &'a U, F_mut: for<'a> FnMut(&'a mut T) -> &'a mut U> VectorViewMut<U> for VectorViewMapMut<V, T, U, F_const, F_mut> {
75
76    fn at_mut(&mut self, i: usize) -> &mut U {
77        (self.mapping_fns.1)(self.base.at_mut(i))
78    }
79}
80
81impl<V: SwappableVectorViewMut<T>, T: ?Sized, U: ?Sized, F_const: for<'a> Fn(&'a T) -> &'a U, F_mut: for<'a> FnMut(&'a mut T) -> &'a mut U> SwappableVectorViewMut<U> for VectorViewMapMut<V, T, U, F_const, F_mut> {
82
83    fn swap(&mut self, i: usize, j: usize) {
84        self.base.swap(i, j)
85    }
86}
87
88pub struct VectorFnMap<V: VectorFn<T>, T, U, F: Fn(T) -> U> {
89    base: V,
90    mapping_fn: F,
91    elements: PhantomData<(fn(T), fn() -> U)>
92}
93
94impl<V: Clone + VectorFn<T>, T, U, F: Clone + Fn(T) -> U> Clone for VectorFnMap<V, T, U, F> {
95    
96    fn clone(&self) -> Self {
97        Self {
98            mapping_fn: self.mapping_fn.clone(),
99            base: self.base.clone(),
100            elements: PhantomData
101        }
102    }
103}
104
105impl<V: Copy + VectorFn<T>, T, U, F: Copy + Fn(T) -> U> Copy for VectorFnMap<V, T, U, F> {}
106
107impl<V: VectorFn<T>, T, U, F: Fn(T) -> U> VectorFnMap<V, T, U, F> {
108    
109    pub fn new(base: V, mapping_fn: F) -> Self {
110        Self {
111            base: base,
112            mapping_fn: mapping_fn,
113            elements: PhantomData
114        }
115    }
116}
117
118impl<V: VectorFn<T>, T, U, F: Fn(T) -> U> VectorFn<U> for VectorFnMap<V, T, U, F> {
119
120    fn at(&self, i: usize) -> U {
121        (self.mapping_fn)(self.base.at(i))
122    }
123
124    fn len(&self) -> usize {
125        self.base.len()
126    }
127}
feanor_math/seq/map.rs

feanor_math/seq/
map.rs
