Implement DeepClone for Array<T>

[Veykril]

For some reason it is not currently possible to implement DeepClone for Array generically either due to a compiler bug or me overlooking something.

blend2d-rs/src/variant.rs

Lines 322 to 332 in f1f116c

	// Fails to compile on rust stable but works fine on nightly(E0277). I believe
	// this might be related to https://github.com/rust-lang/rust/issues/24159,
	// but im unsure as to how one could circumvent it
	/*impl<T> DeepClone for Array<T>
	where
	T: ArrayType,
	Array<T>: WrappedBlCore,
	<Array<T> as WrappedBlCore>::Core: Copy + 'static,
	{
	const ASSIGN_DEEP: BlAssignDeep<Self::Core> = ffi::blArrayAssignDeep;
	}*/

We can obviously circumvent this by changing the array_type macro to implement DeepClone for each of the types for Array instead. It's not nice but it would solve the problem for the time being

blend2d-rs/src/array.rs

Lines 448 to 504 in f1f116c

	macro_rules! impl_array_type {
	($( $append:ident, $insert:ident, $replace:ident for $( ($ty:ty = $idx:expr) ),+);*$(;)*) => {
	$(
	$(
	impl ArrayType for $ty {
	const IMPL_IDX: usize = $idx as usize;
	#[inline]
	unsafe fn push(core: &mut ffi::BLArrayCore, item: Self) -> Result<()> {
	errcode_to_result(ffi::$append(core, item as _))
	}
	#[inline]
	unsafe fn insert(core: &mut ffi::BLArrayCore, index: usize, item: Self) -> Result<()> {
	errcode_to_result(ffi::$insert(core, index, item as _))
	}
	#[inline]
	unsafe fn replace(core: &mut ffi::BLArrayCore, index: usize, item: Self) -> Result<()> {
	errcode_to_result(ffi::$replace(core, index, item as _))
	}
	}
	)+
	)*
	};
	($( ( $( $ty:ty ),+ = $idx:expr) );* $(;)*) => {
	$(
	$(
	impl ArrayType for $ty {
	const IMPL_IDX: usize = $idx as usize;
	}
	)+
	)*
	}
	}
	impl_array_type! {
	blArrayAppendU8, blArrayInsertU8, blArrayInsertU8 for (i8 = ImplType::ArrayI8), (u8 = ImplType::ArrayU8);
	blArrayAppendU16, blArrayInsertU16, blArrayInsertU16 for (i16 = ImplType::ArrayI16), (u16 = ImplType::ArrayU16);
	blArrayAppendU32, blArrayInsertU32, blArrayInsertU32 for (i32 = ImplType::ArrayI32), (u32 = ImplType::ArrayU32);
	blArrayAppendU64, blArrayInsertU64, blArrayInsertU64 for (i64 = ImplType::ArrayI64), (u64 = ImplType::ArrayU64);
	blArrayAppendF32, blArrayInsertF32, blArrayInsertF32 for (f32 = ImplType::ArrayF32);
	blArrayAppendF64, blArrayInsertF64, blArrayInsertF64 for (f64 = ImplType::ArrayF32);
	}
	#[cfg(target_pointer_width = "32")]
	impl_array_type!(blArrayAppendU32, blArrayInsertU32, blArrayInsertU32 for (isize = ImplType::ArrayI32), (usize = ImplType::ArrayU32));
	#[cfg(target_pointer_width = "64")]
	impl_array_type!(blArrayAppendU64, blArrayInsertU64, blArrayInsertU64 for (isize = ImplType::ArrayI64), (usize = ImplType::ArrayU64));
	mod scope {
	use crate::{array::ArrayType, font_defs::*, geometry::*, variant::ImplType, Tag};
	impl_array_type! {
	(Tag = ImplType::ArrayStruct4);
	(PointD, PointI, SizeD, SizeI, FontFeature, FontVariation = ImplType::ArrayStruct8);
	(Circle = ImplType::ArrayStruct12);
	(BoxD, BoxI, Ellipse, Line, RectD, RectI = ImplType::ArrayStruct16);
	(Arc, Chord, Pie, RoundRect, Triangle = ImplType::ArrayStruct24);
	}
	}

.

[Veykril]

seems to work now. Fixed in 4dc1aab.