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De-ambiguat AsRef/AsMut/Into implementations. 

Addresses comments of #225.
This commit is contained in:
Sébastien Crozet 2017-02-26 22:15:11 +01:00 committed by Sébastien Crozet
parent 108b5830e1
commit f86752e44a
2 changed files with 78 additions and 53 deletions
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78
src/core/conversion.rs
View File

@ -1,11 +1,15 @@
use std::ptr;
use std::mem;
use std::convert::{From, Into, AsRef, AsMut};
use typenum::{self, Cmp, Equal};
use alga::general::{SubsetOf, SupersetOf};
use core::{Scalar, Matrix};
use core::dimension::{Dim, DimName, DimNameMul, DimNameProd, U1, U2, U3, U4, U5, U6};
use core::dimension::{Dim,
U1, U2, U3, U4,
U5, U6, U7, U8,
U9, U10, U11, U12,
U13, U14, U15, U16
};
use core::constraint::{ShapeConstraint, SameNumberOfRows, SameNumberOfColumns};
use core::storage::{Storage, StorageMut, OwnedStorage};
use core::iter::{MatrixIter, MatrixIterMut};
@ -85,14 +89,11 @@ impl<'a, N: Scalar, R: Dim, C: Dim, S: StorageMut<N, R, C>> IntoIterator for &'a
macro_rules! impl_from_into_asref_1D(
($($Dim: ident => $SZ: expr);* $(;)*) => {$(
impl<N, R, C, S> From<[N; $SZ]> for Matrix<N, R, C, S>
($(($NRows: ident, $NCols: ident) => $SZ: expr);* $(;)*) => {$(
impl<N, S> From<[N; $SZ]> for Matrix<N, $NRows, $NCols, S>
where N: Scalar,
R: DimName + DimNameMul<C>,
C: DimName,
S: OwnedStorage<N, R, C>,
S::Alloc: OwnedAllocator<N, R, C, S>,
<DimNameProd<R, C> as DimName>::Value: Cmp<typenum::$Dim, Output = Equal> {
S: OwnedStorage<N, $NRows, $NCols>,
S::Alloc: OwnedAllocator<N, $NRows, $NCols, S> {
#[inline]
fn from(arr: [N; $SZ]) -> Self {
unsafe {
@ -104,13 +105,10 @@ macro_rules! impl_from_into_asref_1D(
}
}
impl<N, R, C, S> Into<[N; $SZ]> for Matrix<N, R, C, S>
impl<N, S> Into<[N; $SZ]> for Matrix<N, $NRows, $NCols, S>
where N: Scalar,
R: DimName + DimNameMul<C>,
C: DimName,
S: OwnedStorage<N, R, C>,
S::Alloc: OwnedAllocator<N, R, C, S>,
<DimNameProd<R, C> as DimName>::Value: Cmp<typenum::$Dim, Output = Equal> {
S: OwnedStorage<N, $NRows, $NCols>,
S::Alloc: OwnedAllocator<N, $NRows, $NCols, S> {
#[inline]
fn into(self) -> [N; $SZ] {
unsafe {
@ -122,13 +120,10 @@ macro_rules! impl_from_into_asref_1D(
}
}
impl<N, R, C, S> AsRef<[N; $SZ]> for Matrix<N, R, C, S>
impl<N, S> AsRef<[N; $SZ]> for Matrix<N, $NRows, $NCols, S>
where N: Scalar,
R: DimName + DimNameMul<C>,
C: DimName,
S: OwnedStorage<N, R, C>,
S::Alloc: OwnedAllocator<N, R, C, S>,
<DimNameProd<R, C> as DimName>::Value: Cmp<typenum::$Dim, Output = Equal> {
S: OwnedStorage<N, $NRows, $NCols>,
S::Alloc: OwnedAllocator<N, $NRows, $NCols, S> {
#[inline]
fn as_ref(&self) -> &[N; $SZ] {
unsafe {
@ -137,13 +132,10 @@ macro_rules! impl_from_into_asref_1D(
}
}
impl<N, R, C, S> AsMut<[N; $SZ]> for Matrix<N, R, C, S>
impl<N, S> AsMut<[N; $SZ]> for Matrix<N, $NRows, $NCols, S>
where N: Scalar,
R: DimName + DimNameMul<C>,
C: DimName,
S: OwnedStorage<N, R, C>,
S::Alloc: OwnedAllocator<N, R, C, S>,
<DimNameProd<R, C> as DimName>::Value: Cmp<typenum::$Dim, Output = Equal> {
S: OwnedStorage<N, $NRows, $NCols>,
S::Alloc: OwnedAllocator<N, $NRows, $NCols, S> {
#[inline]
fn as_mut(&mut self) -> &mut [N; $SZ] {
unsafe {
@ -154,14 +146,19 @@ macro_rules! impl_from_into_asref_1D(
)*}
);
// Implement for vectors of dimension 1 .. 36 and matrices with shape 1x1 .. 6x6.
// Implement for vectors of dimension 1 .. 16.
impl_from_into_asref_1D!(
U1 => 1; U2 => 2; U3 => 3; U4 => 4; U5 => 5; U6 => 6;
U7 => 7; U8 => 8; U9 => 9; U10 => 10; U11 => 11; U12 => 12;
U13 => 13; U14 => 14; U15 => 15; U16 => 16; U17 => 17; U18 => 18;
U19 => 19; U20 => 20; U21 => 21; U22 => 22; U23 => 23; U24 => 24;
U25 => 25; U26 => 26; U27 => 27; U28 => 28; U29 => 29; U30 => 30;
U31 => 31; U32 => 32; U33 => 33; U34 => 34; U35 => 35; U36 => 36;
// Row vectors.
(U1, U1 ) => 1; (U1, U2 ) => 2; (U1, U3 ) => 3; (U1, U4 ) => 4;
(U1, U5 ) => 5; (U1, U6 ) => 6; (U1, U7 ) => 7; (U1, U8 ) => 8;
(U1, U9 ) => 9; (U1, U10) => 10; (U1, U11) => 11; (U1, U12) => 12;
(U1, U13) => 13; (U1, U14) => 14; (U1, U15) => 15; (U1, U16) => 16;
// Column vectors.
(U2 , U1) => 2; (U3 , U1) => 3; (U4 , U1) => 4;
(U5 , U1) => 5; (U6 , U1) => 6; (U7 , U1) => 7; (U8 , U1) => 8;
(U9 , U1) => 9; (U10, U1) => 10; (U11, U1) => 11; (U12, U1) => 12;
(U13, U1) => 13; (U14, U1) => 14; (U15, U1) => 15; (U16, U1) => 16;
);
@ -225,12 +222,11 @@ macro_rules! impl_from_into_asref_2D(
);
// Implement for matrices with shape 1x1 .. 4x4.
// Implement for matrices with shape 2x2 .. 4x4.
impl_from_into_asref_2D!(
(U1, U1) => (1, 1); (U1, U2) => (1, 2); (U1, U3) => (1, 3); (U1, U4) => (1, 4); (U1, U5) => (1, 5); (U1, U6) => (1, 6);
(U2, U1) => (2, 1); (U2, U2) => (2, 2); (U2, U3) => (2, 3); (U2, U4) => (2, 4); (U2, U5) => (2, 5); (U2, U6) => (2, 6);
(U3, U1) => (3, 1); (U3, U2) => (3, 2); (U3, U3) => (3, 3); (U3, U4) => (3, 4); (U3, U5) => (3, 5); (U3, U6) => (3, 6);
(U4, U1) => (4, 1); (U4, U2) => (4, 2); (U4, U3) => (4, 3); (U4, U4) => (4, 4); (U4, U5) => (4, 5); (U4, U6) => (4, 6);
(U5, U1) => (5, 1); (U5, U2) => (5, 2); (U5, U3) => (5, 3); (U5, U4) => (5, 4); (U5, U5) => (5, 5); (U5, U6) => (5, 6);
(U6, U1) => (6, 1); (U6, U2) => (6, 2); (U6, U3) => (6, 3); (U6, U4) => (6, 4); (U6, U5) => (6, 5); (U6, U6) => (6, 6);
(U2, U2) => (2, 2); (U2, U3) => (2, 3); (U2, U4) => (2, 4); (U2, U5) => (2, 5); (U2, U6) => (2, 6);
(U3, U2) => (3, 2); (U3, U3) => (3, 3); (U3, U4) => (3, 4); (U3, U5) => (3, 5); (U3, U6) => (3, 6);
(U4, U2) => (4, 2); (U4, U3) => (4, 3); (U4, U4) => (4, 4); (U4, U5) => (4, 5); (U4, U6) => (4, 6);
(U5, U2) => (5, 2); (U5, U3) => (5, 3); (U5, U4) => (5, 4); (U5, U5) => (5, 5); (U5, U6) => (5, 6);
(U6, U2) => (6, 2); (U6, U3) => (6, 3); (U6, U4) => (6, 4); (U6, U5) => (6, 5); (U6, U6) => (6, 6);
);

33
tests/conversion.rs
View File

@ -10,6 +10,7 @@ extern crate nalgebra as na;
use alga::linear::Transformation;
use na::{
Vector1, Vector2, Vector3, Vector4, Vector5, Vector6,
RowVector1, RowVector2, RowVector3, RowVector4, RowVector5, RowVector6,
Matrix2, Matrix3, Matrix4, Matrix5, Matrix6,
Matrix2x3, Matrix2x4, Matrix2x5, Matrix2x6,
Matrix3x2, Matrix3x4, Matrix3x5, Matrix3x6,
@ -160,7 +161,7 @@ macro_rules! array_vector_conversion(
fn $array_vector_conversion_i() {
let v = $Vector::from_fn(|i, _| i);
let arr: [usize; $SZ] = v.into();
let arr_ref: &[usize; $SZ] = v.as_ref();
let arr_ref = v.as_ref();
let v2 = $Vector::from(arr);
for i in 0 .. $SZ {
@ -182,13 +183,41 @@ array_vector_conversion!(
array_vector_conversion_6, Vector6, 6;
);
macro_rules! array_row_vector_conversion(
($($array_vector_conversion_i: ident, $Vector: ident, $SZ: expr);* $(;)*) => {$(
#[test]
fn $array_vector_conversion_i() {
let v = $Vector::from_fn(|_, i| i);
let arr: [usize; $SZ] = v.into();
let arr_ref = v.as_ref();
let v2 = $Vector::from(arr);
for i in 0 .. $SZ {
assert_eq!(arr[i], i);
assert_eq!(arr_ref[i], i);
}
assert_eq!(v, v2);
}
)*}
);
array_row_vector_conversion!(
array_row_vector_conversion_1, RowVector1, 1;
array_row_vector_conversion_2, RowVector2, 2;
array_row_vector_conversion_3, RowVector3, 3;
array_row_vector_conversion_4, RowVector4, 4;
array_row_vector_conversion_5, RowVector5, 5;
array_row_vector_conversion_6, RowVector6, 6;
);
macro_rules! array_matrix_conversion(
($($array_matrix_conversion_i_j: ident, $Matrix: ident, ($NRows: expr, $NCols: expr));* $(;)*) => {$(
#[test]
fn $array_matrix_conversion_i_j() {
let m = $Matrix::from_fn(|i, j| i * 10 + j);
let arr: [[usize; $NRows]; $NCols] = m.into();
let arr_ref: &[[usize; $NRows]; $NCols] = m.as_ref();
let arr_ref = m.as_ref();
let m2 = $Matrix::from(arr);
for i in 0 .. $NRows {