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use crate::error::ErrorCode;
use crate::precise_number::{InnerUint, PreciseNumber};
use anchor_lang::solana_program::system_program;
use anchor_lang::{prelude::*, solana_program};
use anchor_spl::token::{Mint, TokenAccount};
use std::convert::*;
pub trait OrArithError<T> {
fn or_arith_error(self) -> Result<T>;
}
impl OrArithError<PreciseNumber> for Option<PreciseNumber> {
fn or_arith_error(self) -> Result<PreciseNumber> {
self.ok_or(ErrorCode::ArithmeticError.into())
}
}
impl OrArithError<u128> for Option<u128> {
fn or_arith_error(self) -> Result<u128> {
self.ok_or(ErrorCode::ArithmeticError.into())
}
}
impl OrArithError<u64> for Option<u64> {
fn or_arith_error(self) -> Result<u64> {
self.ok_or(ErrorCode::ArithmeticError.into())
}
}
pub fn get_percent_prec(percent: u32) -> Result<PreciseNumber> {
let max_u32 = PreciseNumber::new(u32::MAX as u128).or_arith_error()?;
let percent_prec = PreciseNumber::new(percent as u128).or_arith_error()?;
percent_prec.checked_div(&max_u32).or_arith_error()
}
pub fn get_percent(value: u64, percent: u32) -> Result<u64> {
u64::try_from(
u128::try_from(value)
.ok()
.or_arith_error()?
.checked_mul(u128::try_from(percent).ok().or_arith_error()?)
.or_arith_error()?
.checked_div(u32::MAX as u128)
.or_arith_error()?,
)
.ok()
.or_arith_error()
}
pub fn precise_supply(mint: &Account<Mint>) -> PreciseNumber {
precise_supply_amt(mint.supply, mint)
}
fn get_pow_10(decimals: u8) -> PreciseNumber {
match decimals {
0 => PreciseNumber::new(1),
1 => PreciseNumber::new(10),
2 => PreciseNumber::new(100),
3 => PreciseNumber::new(1000),
4 => PreciseNumber::new(10000),
5 => PreciseNumber::new(100000),
6 => PreciseNumber::new(1000000),
7 => PreciseNumber::new(10000000),
8 => PreciseNumber::new(100000000),
9 => PreciseNumber::new(1000000000),
10 => PreciseNumber::new(10000000000),
11 => PreciseNumber::new(100000000000),
12 => PreciseNumber::new(1000000000000),
_ => unreachable!(),
}
.unwrap()
}
fn get_u128_pow_10(decimals: u8) -> u128 {
match decimals {
0 => 1,
1 => 10,
2 => 100,
3 => 1000,
4 => 10000,
5 => 100000,
6 => 1000000,
7 => 10000000,
8 => 100000000,
9 => 1000000000,
10 => 10000000000,
11 => 100000000000,
12 => 1000000000000,
_ => unreachable!(),
}
}
pub fn precise_supply_amt(amt: u64, mint: &Mint) -> PreciseNumber {
PreciseNumber {
value: InnerUint::from(amt)
.checked_mul(InnerUint::from(get_u128_pow_10(12_u8 - mint.decimals)))
.unwrap()
.checked_mul(InnerUint::from(1_000_000u64))
.unwrap(),
}
}
pub fn to_mint_amount(amt: &PreciseNumber, mint: &Mint, ceil: bool) -> u64 {
let pow_10 = get_pow_10(mint.decimals);
let pre_round = amt.checked_mul(&pow_10).unwrap();
let post_round = if ceil {
pre_round.ceiling().unwrap()
} else {
pre_round.floor().unwrap()
};
post_round.to_imprecise().unwrap() as u64
}
pub fn verify_empty_or_mint<'info>(
maybe_token_account: &UncheckedAccount<'info>,
mint: &Pubkey,
) -> Result<()> {
if *maybe_token_account.owner == system_program::ID {
Ok(())
} else {
let acc: Account<'info, TokenAccount> = Account::try_from(maybe_token_account)?;
if acc.mint == *mint {
Ok(())
} else {
Err(error!(ErrorCode::InvalidMint))
}
}
}
#[derive(Accounts)]
pub struct CloseTokenAccount<'info> {
pub from: AccountInfo<'info>,
pub to: AccountInfo<'info>,
pub authority: AccountInfo<'info>,
}
pub fn close_token_account<'a, 'b, 'c, 'info>(
ctx: CpiContext<'a, 'b, 'c, 'info, CloseTokenAccount<'info>>,
) -> Result<()> {
let ix = spl_token::instruction::close_account(
&spl_token::ID,
ctx.accounts.from.key,
ctx.accounts.to.key,
ctx.accounts.authority.key,
&[],
)?;
solana_program::program::invoke_signed(
&ix,
&[
ctx.accounts.from.clone(),
ctx.accounts.to.clone(),
ctx.accounts.authority.clone(),
ctx.program.clone(),
],
ctx.signer_seeds,
)
.map_err(|e| e.into())
}
