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eosio.token.hpp
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eosio.token.hpp
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/**
* @file
* @copyright defined in eos/LICENSE.txt
*/
#pragma once
#include <eosiolib/asset.hpp>
#include <eosiolib/eosio.hpp>
#include <string>
namespace eosiosystem {
class system_contract;
}
namespace eosio {
using std::string;
class [[eosio::contract("eosio.token")]] token : public contract {
public:
using contract::contract;
[[eosio::action]]
void create( name issuer,
asset maximum_supply);
[[eosio::action]]
void issue( name to, asset quantity, string memo );
[[eosio::action]]
void retire( asset quantity, string memo );
[[eosio::action]]
void transfer( name from,
name to,
asset quantity,
string memo );
[[eosio::action]]
void open( name owner, const symbol& symbol, name ram_payer );
[[eosio::action]]
void close( name owner, const symbol& symbol );
static asset get_supply( name token_contract_account, symbol_code sym_code )
{
stats statstable( token_contract_account, sym_code.raw() );
const auto& st = statstable.get( sym_code.raw() );
return st.supply;
}
static asset get_balance( name token_contract_account, name owner, symbol_code sym_code )
{
accounts accountstable( token_contract_account, owner.value );
const auto& ac = accountstable.get( sym_code.raw() );
return ac.balance;
}
using create_action = eosio::action_wrapper<"create"_n, &token::create>;
using issue_action = eosio::action_wrapper<"issue"_n, &token::issue>;
using retire_action = eosio::action_wrapper<"retire"_n, &token::retire>;
using transfer_action = eosio::action_wrapper<"transfer"_n, &token::transfer>;
using open_action = eosio::action_wrapper<"open"_n, &token::open>;
using close_action = eosio::action_wrapper<"close"_n, &token::close>;
private:
struct [[eosio::table]] account {
asset balance;
uint64_t primary_key()const { return balance.symbol.code().raw(); }
};
struct [[eosio::table]] currency_stats {
asset supply;
asset max_supply;
name issuer;
uint64_t primary_key()const { return supply.symbol.code().raw(); }
};
typedef eosio::multi_index< "accounts"_n, account > accounts;
typedef eosio::multi_index< "stat"_n, currency_stats > stats;
void sub_balance( name owner, asset value );
void add_balance( name owner, asset value, name ram_payer );
};
} /// namespace eosio