use crate::big_uint::*;
use core::ops::{Add, Sub, Mul, Div, Rem, Neg};
use core::ops::{AddAssign, SubAssign, MulAssign, DivAssign, RemAssign};
use core::cmp::Ordering;
use alloc::vec::Vec;
use elrond_wasm::BigIntApi;
use elrond_wasm::Sign;
extern {
fn bigIntNew(value: i64) -> i32;
fn bigIntSignedByteLength(x: i32) -> i32;
fn bigIntGetSignedBytes(reference: i32, byte_ptr: *mut u8) -> i32;
fn bigIntSetSignedBytes(destination: i32, byte_ptr: *const u8, byte_len: i32);
fn bigIntAdd(dest: i32, x: i32, y: i32);
fn bigIntSub(dest: i32, x: i32, y: i32);
fn bigIntMul(dest: i32, x: i32, y: i32);
fn bigIntTDiv(dest: i32, x: i32, y: i32);
fn bigIntTMod(dest: i32, x: i32, y: i32);
fn bigIntAbs(dest: i32, x: i32);
fn bigIntNeg(dest: i32, x: i32);
fn bigIntSign(x: i32) -> i32;
fn bigIntCmp(x: i32, y: i32) -> i32;
}
pub struct ArwenBigInt {
pub handle: i32 }
impl From<ArwenBigUint> for ArwenBigInt {
#[inline]
fn from(item: ArwenBigUint) -> Self {
ArwenBigInt{ handle: item.handle }
}
}
impl From<i64> for ArwenBigInt {
fn from(item: i64) -> Self {
unsafe {
ArwenBigInt{ handle: bigIntNew(item) }
}
}
}
impl From<i32> for ArwenBigInt {
fn from(item: i32) -> Self {
unsafe {
ArwenBigInt{ handle: bigIntNew(item.into()) }
}
}
}
impl ArwenBigInt {
pub fn from_i64(value: i64) -> ArwenBigInt {
unsafe {
ArwenBigInt{ handle: bigIntNew(value) }
}
}
}
impl Clone for ArwenBigInt {
fn clone(&self) -> Self {
unsafe {
let clone_handle = bigIntNew(0);
bigIntAdd(clone_handle, clone_handle, self.handle);
ArwenBigInt {handle: clone_handle}
}
}
}
macro_rules! binary_operator {
($trait:ident, $method:ident, $api_func:ident) => {
impl $trait for ArwenBigInt {
type Output = ArwenBigInt;
fn $method(self, other: ArwenBigInt) -> ArwenBigInt {
unsafe {
let result = bigIntNew(0);
$api_func(result, self.handle, other.handle);
ArwenBigInt {handle: result}
}
}
}
impl<'a, 'b> $trait<&'b ArwenBigInt> for &'a ArwenBigInt {
type Output = ArwenBigInt;
fn $method(self, other: &ArwenBigInt) -> ArwenBigInt {
unsafe {
let result = bigIntNew(0);
$api_func(result, self.handle, other.handle);
ArwenBigInt {handle: result}
}
}
}
}
}
binary_operator!{Add, add, bigIntAdd}
binary_operator!{Sub, sub, bigIntSub}
binary_operator!{Mul, mul, bigIntMul}
binary_operator!{Div, div, bigIntTDiv}
binary_operator!{Rem, rem, bigIntTMod}
macro_rules! binary_assign_operator {
($trait:ident, $method:ident, $api_func:ident) => {
impl $trait<ArwenBigInt> for ArwenBigInt {
#[inline]
fn $method(&mut self, other: Self) {
unsafe {
$api_func(self.handle, self.handle, other.handle);
}
}
}
impl $trait<&ArwenBigInt> for ArwenBigInt {
#[inline]
fn $method(&mut self, other: &ArwenBigInt) {
unsafe {
$api_func(self.handle, self.handle, other.handle);
}
}
}
}
}
binary_assign_operator!{AddAssign, add_assign, bigIntAdd}
binary_assign_operator!{SubAssign, sub_assign, bigIntSub}
binary_assign_operator!{MulAssign, mul_assign, bigIntMul}
binary_assign_operator!{DivAssign, div_assign, bigIntTDiv}
binary_assign_operator!{RemAssign, rem_assign, bigIntTMod}
impl PartialEq for ArwenBigInt {
#[inline]
fn eq(&self, other: &Self) -> bool {
let arwen_cmp = unsafe { bigIntCmp(self.handle, other.handle) };
arwen_cmp == 0
}
}
impl Eq for ArwenBigInt{}
impl PartialOrd for ArwenBigInt {
#[inline]
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
Some(self.cmp(other))
}
}
impl Ord for ArwenBigInt {
#[inline]
fn cmp(&self, other: &Self) -> Ordering {
let arwen_cmp = unsafe { bigIntCmp(self.handle, other.handle) };
arwen_cmp.cmp(&0)
}
}
fn arwen_cmp_i64(bi: &ArwenBigInt, other: i64) -> i32 {
unsafe {
if other == 0 {
bigIntSign(bi.handle)
} else {
bigIntCmp(bi.handle, bigIntNew(other))
}
}
}
impl PartialEq<i64> for ArwenBigInt {
#[inline]
fn eq(&self, other: &i64) -> bool {
arwen_cmp_i64(&self, *other) == 0
}
}
impl PartialOrd<i64> for ArwenBigInt {
#[inline]
fn partial_cmp(&self, other: &i64) -> Option<Ordering> {
let arwen_cmp = arwen_cmp_i64(&self, *other);
Some(arwen_cmp.cmp(&0))
}
}
impl Neg for ArwenBigInt {
type Output = ArwenBigInt;
fn neg(self) -> Self::Output {
unsafe {
let result = bigIntNew(0);
bigIntNeg(result, self.handle);
ArwenBigInt {handle: result}
}
}
}
use elrond_wasm::elrond_codec::*;
impl Encode for ArwenBigInt {
const TYPE_INFO: TypeInfo = TypeInfo::BigInt;
fn using_top_encoded<F: FnOnce(&[u8])>(&self, f: F) {
let bytes = self.to_signed_bytes_be();
f(&bytes);
}
fn dep_encode_to<O: Output>(&self, dest: &mut O) {
let bytes = self.to_signed_bytes_be();
bytes.len().dep_encode_to(dest);
dest.write(&bytes);
}
}
impl Decode for ArwenBigInt {
const TYPE_INFO: TypeInfo = TypeInfo::BigInt;
fn top_decode<I: Input>(input: &mut I) -> Result<Self, DecodeError> {
let bytes = input.flush()?;
Ok(ArwenBigInt::from_signed_bytes_be(bytes))
}
fn dep_decode<I: Input>(input: &mut I) -> Result<Self, DecodeError> {
let size = usize::dep_decode(input)?;
let bytes = input.read_slice(size)?;
Ok(ArwenBigInt::from_signed_bytes_be(bytes))
}
}
impl BigIntApi<ArwenBigUint> for ArwenBigInt {
fn abs_uint(&self) -> ArwenBigUint {
unsafe {
let result = bigIntNew(0);
bigIntAbs(result, self.handle);
ArwenBigUint {handle: result}
}
}
fn sign(&self) -> Sign {
unsafe {
let s = bigIntSign(self.handle);
match s.cmp(&0) {
Ordering::Greater => Sign::Plus,
Ordering::Equal => Sign::NoSign,
Ordering::Less => Sign::Minus,
}
}
}
fn to_signed_bytes_be(&self) -> Vec<u8> {
unsafe {
let byte_len = bigIntSignedByteLength(self.handle);
let mut vec = vec![0u8; byte_len as usize];
bigIntGetSignedBytes(self.handle, vec.as_mut_ptr());
vec
}
}
fn from_signed_bytes_be(bytes: &[u8]) -> Self {
unsafe {
let handle = bigIntNew(0);
bigIntSetSignedBytes(handle, bytes.as_ptr(), bytes.len() as i32);
ArwenBigInt{ handle }
}
}
}