2014-08-27 17:19:10 +00:00
|
|
|
// Bitcoin secp256k1 bindings
|
|
|
|
// Written in 2014 by
|
|
|
|
// Dawid Ciężarkiewicz
|
|
|
|
// Andrew Poelstra
|
|
|
|
//
|
|
|
|
// To the extent possible under law, the author(s) have dedicated all
|
|
|
|
// copyright and related and neighboring rights to this software to
|
|
|
|
// the public domain worldwide. This software is distributed without
|
|
|
|
// any warranty.
|
|
|
|
//
|
|
|
|
// You should have received a copy of the CC0 Public Domain Dedication
|
|
|
|
// along with this software.
|
|
|
|
// If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
|
|
|
|
//
|
|
|
|
|
|
|
|
// This is a macro that routinely comes in handy
|
2015-01-17 16:13:45 +00:00
|
|
|
macro_rules! impl_array_newtype {
|
2014-08-27 17:19:10 +00:00
|
|
|
($thing:ident, $ty:ty, $len:expr) => {
|
2015-01-17 16:13:45 +00:00
|
|
|
impl Copy for $thing {}
|
|
|
|
|
2014-08-27 17:19:10 +00:00
|
|
|
impl $thing {
|
|
|
|
#[inline]
|
|
|
|
/// Provides an immutable view into the object
|
|
|
|
pub fn as_slice<'a>(&'a self) -> &'a [$ty] {
|
|
|
|
let &$thing(ref dat) = self;
|
|
|
|
dat.as_slice()
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
/// Provides an immutable view into the object from index `s` inclusive to `e` exclusive
|
2015-01-17 16:13:45 +00:00
|
|
|
pub fn slice<'a>(&'a self, s: usize, e: usize) -> &'a [$ty] {
|
2014-08-27 17:19:10 +00:00
|
|
|
let &$thing(ref dat) = self;
|
|
|
|
dat.slice(s, e)
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
/// Provides an immutable view into the object, up to index `n` exclusive
|
2015-01-17 16:13:45 +00:00
|
|
|
pub fn slice_to<'a>(&'a self, n: usize) -> &'a [$ty] {
|
2014-08-27 17:19:10 +00:00
|
|
|
let &$thing(ref dat) = self;
|
|
|
|
dat.slice_to(n)
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
/// Provides an immutable view into the object, starting from index `n`
|
2015-01-17 16:13:45 +00:00
|
|
|
pub fn slice_from<'a>(&'a self, n: usize) -> &'a [$ty] {
|
2014-08-27 17:19:10 +00:00
|
|
|
let &$thing(ref dat) = self;
|
|
|
|
dat.slice_from(n)
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
/// Converts the object to a raw pointer for FFI interfacing
|
|
|
|
pub fn as_ptr(&self) -> *const $ty {
|
|
|
|
let &$thing(ref dat) = self;
|
|
|
|
dat.as_ptr()
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
/// Converts the object to a mutable raw pointer for FFI interfacing
|
|
|
|
pub fn as_mut_ptr(&mut self) -> *mut $ty {
|
2015-01-17 16:13:45 +00:00
|
|
|
let &mut $thing(ref mut dat) = self;
|
2014-08-27 17:19:10 +00:00
|
|
|
dat.as_mut_ptr()
|
|
|
|
}
|
|
|
|
|
|
|
|
#[inline]
|
|
|
|
/// Returns the length of the object as an array
|
2015-01-17 16:13:45 +00:00
|
|
|
pub fn len(&self) -> usize { $len }
|
2014-08-27 17:19:10 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
impl PartialEq for $thing {
|
|
|
|
#[inline]
|
|
|
|
fn eq(&self, other: &$thing) -> bool {
|
|
|
|
self.as_slice() == other.as_slice()
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
impl Eq for $thing {}
|
|
|
|
|
|
|
|
impl Clone for $thing {
|
|
|
|
#[inline]
|
|
|
|
fn clone(&self) -> $thing {
|
|
|
|
unsafe {
|
|
|
|
use std::intrinsics::copy_nonoverlapping_memory;
|
|
|
|
use std::mem;
|
|
|
|
let mut ret: $thing = mem::uninitialized();
|
|
|
|
copy_nonoverlapping_memory(ret.as_mut_ptr(),
|
|
|
|
self.as_ptr(),
|
|
|
|
mem::size_of::<$thing>());
|
|
|
|
ret
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
2014-09-05 01:09:18 +00:00
|
|
|
|
2015-01-17 16:13:45 +00:00
|
|
|
impl ::serialize::Decodable for $thing {
|
|
|
|
fn decode<D: ::serialize::Decoder>(d: &mut D) -> ::std::result::Result<$thing, D::Error> {
|
2014-09-05 01:09:18 +00:00
|
|
|
use serialize::Decodable;
|
|
|
|
|
|
|
|
::assert_type_is_copy::<$ty>();
|
|
|
|
|
|
|
|
d.read_seq(|d, len| {
|
|
|
|
if len != $len {
|
|
|
|
Err(d.error("Invalid length"))
|
|
|
|
} else {
|
|
|
|
unsafe {
|
|
|
|
use std::mem;
|
2015-01-17 16:13:45 +00:00
|
|
|
let mut ret: [$ty; $len] = mem::uninitialized();
|
2014-09-05 01:09:18 +00:00
|
|
|
for i in range(0, len) {
|
|
|
|
ret[i] = try!(d.read_seq_elt(i, |d| Decodable::decode(d)));
|
|
|
|
}
|
|
|
|
Ok($thing(ret))
|
|
|
|
}
|
|
|
|
}
|
|
|
|
})
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2015-01-17 16:13:45 +00:00
|
|
|
impl ::serialize::Encodable for $thing {
|
|
|
|
fn encode<S: ::serialize::Encoder>(&self, s: &mut S)
|
|
|
|
-> ::std::result::Result<(), S::Error> {
|
|
|
|
self.as_slice().encode(s)
|
2014-09-05 01:21:09 +00:00
|
|
|
}
|
2014-09-05 01:09:18 +00:00
|
|
|
}
|
2014-08-27 17:19:10 +00:00
|
|
|
}
|
2015-01-17 16:13:45 +00:00
|
|
|
}
|
2014-08-27 17:19:10 +00:00
|
|
|
|
|
|
|
|
2014-09-04 19:29:24 +00:00
|
|
|
// for testing
|
2015-01-17 16:13:45 +00:00
|
|
|
macro_rules! hex_slice {
|
2014-09-04 19:29:24 +00:00
|
|
|
($s:expr) => (
|
|
|
|
$s.from_hex().unwrap().as_slice()
|
|
|
|
)
|
2015-01-17 16:13:45 +00:00
|
|
|
}
|
2014-09-04 19:29:24 +00:00
|
|
|
|