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Make macro usage more like existing style

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This commit is contained in:
Cameron Hart 2016-01-02 00:09:11 +11:00
parent 7426d8d807
commit 338c494735
2 changed files with 38 additions and 27 deletions
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26
src/macros.rs
View file

@ -106,26 +106,14 @@ macro_rules! impl_operator {
let ($lhs, $rhs) = (self, other); $body
}
}
};
}
macro_rules! impl_scalar_ops {
($VectorN:ident<$S:ident> { $($field:ident),+ }) => {
impl_operator!(Add<$VectorN<$S>> for $S {
fn add(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar + vector.$field),+) }
});
impl_operator!(Sub<$VectorN<$S>> for $S {
fn sub(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar - vector.$field),+) }
});
impl_operator!(Mul<$VectorN<$S>> for $S {
fn mul(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar * vector.$field),+) }
});
impl_operator!(Div<$VectorN<$S>> for $S {
fn div(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar / vector.$field),+) }
});
impl_operator!(Rem<$VectorN<$S>> for $S {
fn rem(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar % vector.$field),+) }
});
impl<'a> $Op<&'a $Rhs<$S>> for $Lhs {
type Output = $Output;
#[inline]
fn $op(self, other: &'a $Rhs<$S>) -> $Output {
let ($lhs, $rhs) = (self, other); $body
}
}
};
}

39
src/vector.rs
View file

@ -278,6 +278,19 @@ macro_rules! impl_vector {
fn rem_assign(&mut self, other) { $(self.$field %= other.$field);+ }
});
impl_scalar_ops!($VectorN<usize> { $($field),+ });
impl_scalar_ops!($VectorN<u8> { $($field),+ });
impl_scalar_ops!($VectorN<u16> { $($field),+ });
impl_scalar_ops!($VectorN<u32> { $($field),+ });
impl_scalar_ops!($VectorN<u64> { $($field),+ });
impl_scalar_ops!($VectorN<isize> { $($field),+ });
impl_scalar_ops!($VectorN<i8> { $($field),+ });
impl_scalar_ops!($VectorN<i16> { $($field),+ });
impl_scalar_ops!($VectorN<i32> { $($field),+ });
impl_scalar_ops!($VectorN<i64> { $($field),+ });
impl_scalar_ops!($VectorN<f32> { $($field),+ });
impl_scalar_ops!($VectorN<f64> { $($field),+ });
impl_index_operators!($VectorN<S>, $n, S, usize);
impl_index_operators!($VectorN<S>, $n, [S], Range<usize>);
impl_index_operators!($VectorN<S>, $n, [S], RangeTo<usize>);
@ -286,20 +299,30 @@ macro_rules! impl_vector {
}
}
macro_rules! impl_vector_scalar_ops {
($($S:ident)*) => ($(
impl_scalar_ops!(Vector2<$S> { x, y });
impl_scalar_ops!(Vector3<$S> { x, y, z });
impl_scalar_ops!(Vector4<$S> { x, y, z, w });
)*)
macro_rules! impl_scalar_ops {
($VectorN:ident<$S:ident> { $($field:ident),+ }) => {
impl_operator!(Add<$VectorN<$S>> for $S {
fn add(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar + vector.$field),+) }
});
impl_operator!(Sub<$VectorN<$S>> for $S {
fn sub(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar - vector.$field),+) }
});
impl_operator!(Mul<$VectorN<$S>> for $S {
fn mul(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar * vector.$field),+) }
});
impl_operator!(Div<$VectorN<$S>> for $S {
fn div(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar / vector.$field),+) }
});
impl_operator!(Rem<$VectorN<$S>> for $S {
fn rem(scalar, vector) -> $VectorN<$S> { $VectorN::new($(scalar % vector.$field),+) }
});
};
}
impl_vector!(Vector2<S> { x, y }, 2, vec2);
impl_vector!(Vector3<S> { x, y, z }, 3, vec3);
impl_vector!(Vector4<S> { x, y, z, w }, 4, vec4);
impl_vector_scalar_ops!(usize u8 u16 u32 u64 isize i8 i16 i32 i64 f32 f64);
impl_fixed_array_conversions!(Vector2<S> { x: 0, y: 1 }, 2);
impl_fixed_array_conversions!(Vector3<S> { x: 0, y: 1, z: 2 }, 3);
impl_fixed_array_conversions!(Vector4<S> { x: 0, y: 1, z: 2, w: 3 }, 4);