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Add ptr::ref_eq()

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This commit is contained in:
Ben Blum
2012-08-11 15:42:58 -04:00
parent 3dbce4ebea
commit 6c4843d9da
1 changed files with 8 additions and 2 deletions
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8
src/libcore/ptr.rs
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@@ -13,9 +13,9 @@ export memcpy;
export memmove; export memmove;
export memset; export memset;
export to_uint; export to_uint;
export ref_eq;
export buf_len; export buf_len;
export position; export position;
export extensions;
export ptr; export ptr;
import libc::{c_void, size_t}; import libc::{c_void, size_t};
@@ -150,6 +150,12 @@ fn to_uint<T>(thing: &T) -> uint unsafe {
unsafe::reinterpret_cast(thing) unsafe::reinterpret_cast(thing)
} }
/// Determine if two borrowed pointers point to the same thing.
#[inline(always)]
fn ref_eq<T>(thing: &T, other: &T) -> bool {
to_uint(thing) == to_uint(other)
}
trait ptr { trait ptr {
pure fn is_null() -> bool; pure fn is_null() -> bool;
pure fn is_not_null() -> bool; pure fn is_not_null() -> bool;