| 1 | //! This module defines a macro that lets you go from a raw pointer to a struct |
| 2 | //! to a raw pointer to a field of the struct. |
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| 3 | |
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| 4 | macro_rules! generate_addr_of_methods { |
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| 5 | ( |
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| 6 | impl<$($gen:ident)*> $struct_name:ty {$( |
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| 7 | $(#[$attrs:meta])* |
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| 8 | $vis:vis unsafe fn $fn_name:ident(self: NonNull<Self>) -> NonNull<$field_type:ty> { |
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| 9 | &self$(.$field_name:tt)+ |
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| 10 | } |
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| 11 | )*} |
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| 12 | ) => { |
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| 13 | impl<$($gen)*> $struct_name {$( |
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| 14 | $(#[$attrs])* |
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| 15 | $vis unsafe fn $fn_name(me: ::core::ptr::NonNull<Self>) -> ::core::ptr::NonNull<$field_type> { |
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| 16 | let me = me.as_ptr(); |
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| 17 | let field = ::std::ptr::addr_of_mut!((*me) $(.$field_name)+ ); |
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| 18 | ::core::ptr::NonNull::new_unchecked(field) |
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| 19 | } |
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| 20 | )*} |
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| 21 | }; |
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| 22 | } |
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| 23 | |
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