Defibox

Peripheral EOSIO smart contracts for interacting with Defibox

Dependencies

• sx.uniswap

Quickstart

#include <sx.defibox/defibox.hpp>
#include <sx.uniswap/uniswap.hpp>

// user input
const asset quantity = asset{10000, symbol{"EOS", 4}};
const uint64_t pair_id = 12; // EOS/USDT pair

// get defibox info
const auto [ reserve_in, reserve_out ] = defibox::get_reserves( pair_id, quantity.symbol );
const uint8_t fee = defibox::get_fee();

// calculate out price
const asset out = uniswap::get_amount_out( quantity, reserves_in, reserves_out, fee );
// => "2.6500 USDT"

Table of Content

• STATIC get_reserves
• STATIC get_fee
• STATIC get_pairid_from_lptoken
• STATIC get_lptoken_from_pairid
• STATIC get_withdraw_out

STATIC get_reserves

Get reserves for a pair

params

• {uint64_t} pair_id - pair id
• {symbol} sort - sort by symbol (reserve0 will be first item in pair)

returns

• {pair<asset, asset>} - pair of reserve assets

example

const uint64_t pair_id = 12;
const symbol sort = symbol{"EOS", 4};

const auto [reserve0, reserve1] = defibox::get_reserves( pair_id, sort );
// reserve0 => "4585193.1234 EOS"
// reserve1 => "12568203.3533 USDT"

STATIC get_fee

Get Defibox total fee

returns

• {uint8_t} - total fee (trade + protocol)

example

const uint8_t fee = defibox::get_fee();
// => 30

STATIC get_pairid_from_lptoken

Get Defibox pair id from LP token

params

• {symbol_code} symcode - Defibox LP token

returns

• {uint64_t} - pair id

example

const uint64_t pair_id = defibox::get_pairid_from_lptoken( {"BOXGL"} );
// => 194

STATIC get_lptoken_from_pairid

Get LP token based on Defibox pair id

params

• {uint64_t} pair_id - Defibox pair id

returns

• {extended_symbol} - lp token

example

const auto ext_sym = defibox::get_lptoken_from_pairid( 194 );
// => "BOXGL"

STATIC get_withdraw_out

Get reserve tokens amounts after liquidity withdraw

params

• {extended_asset} lp_token - LP tokens

returns

• {pair<extended_asset, extended_asset>} - pair of reserve assets to receive after withdaw

example

const extended_asset lp_tokens = extended_asset{ 12345678, { {"BOXGL", 0}, "lptoken.defi"_n } };
const auto [amount1, amount2] = defibox::get_withdraw_out( lp_tokens );
// amount1 => "4583.1234 EOS"
// amount2 => "1803.353300 BOX"