96 lines
3.1 KiB
Rust
96 lines
3.1 KiB
Rust
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// Bitcoin secp256k1 bindings
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// Written in 2014 by
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// Dawid Ciężarkiewicz
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// Andrew Poelstra
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//
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// To the extent possible under law, the author(s) have dedicated all
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// copyright and related and neighboring rights to this software to
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// the public domain worldwide. This software is distributed without
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// any warranty.
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//
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// You should have received a copy of the CC0 Public Domain Dedication
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// along with this software.
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// If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
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//
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#![macro_escape]
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// This is a macro that routinely comes in handy
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macro_rules! impl_array_newtype(
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($thing:ident, $ty:ty, $len:expr) => {
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impl $thing {
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#[inline]
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/// Provides an immutable view into the object
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pub fn as_slice<'a>(&'a self) -> &'a [$ty] {
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let &$thing(ref dat) = self;
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dat.as_slice()
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}
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#[inline]
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/// Provides an immutable view into the object from index `s` inclusive to `e` exclusive
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pub fn slice<'a>(&'a self, s: uint, e: uint) -> &'a [$ty] {
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let &$thing(ref dat) = self;
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dat.slice(s, e)
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}
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#[inline]
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/// Provides an immutable view into the object, up to index `n` exclusive
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pub fn slice_to<'a>(&'a self, n: uint) -> &'a [$ty] {
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let &$thing(ref dat) = self;
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dat.slice_to(n)
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}
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#[inline]
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/// Provides an immutable view into the object, starting from index `n`
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pub fn slice_from<'a>(&'a self, n: uint) -> &'a [$ty] {
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let &$thing(ref dat) = self;
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dat.slice_from(n)
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}
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#[inline]
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/// Converts the object to a raw pointer for FFI interfacing
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pub fn as_ptr(&self) -> *const $ty {
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let &$thing(ref dat) = self;
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dat.as_ptr()
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}
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#[inline]
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/// Converts the object to a mutable raw pointer for FFI interfacing
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pub fn as_mut_ptr(&mut self) -> *mut $ty {
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let &$thing(ref mut dat) = self;
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dat.as_mut_ptr()
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}
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#[inline]
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/// Returns the length of the object as an array
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pub fn len(&self) -> uint { $len }
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}
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impl PartialEq for $thing {
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#[inline]
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fn eq(&self, other: &$thing) -> bool {
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self.as_slice() == other.as_slice()
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}
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}
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impl Eq for $thing {}
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impl Clone for $thing {
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#[inline]
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fn clone(&self) -> $thing {
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unsafe {
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use std::intrinsics::copy_nonoverlapping_memory;
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use std::mem;
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let mut ret: $thing = mem::uninitialized();
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copy_nonoverlapping_memory(ret.as_mut_ptr(),
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self.as_ptr(),
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mem::size_of::<$thing>());
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ret
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}
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}
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}
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}
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)
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