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dummy_token.cairo
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dummy_token.cairo
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%lang starknet
from starkware.cairo.common.cairo_builtins import HashBuiltin
from starkware.cairo.common.uint256 import Uint256
from starkware.starknet.common.syscalls import get_caller_address
from openzeppelin.token.erc20.library import ERC20
@constructor
func constructor{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(
name: felt, symbol: felt, initial_supply: Uint256, recipient: felt
) {
ERC20.initializer(name, symbol, 18);
ERC20._mint(recipient, initial_supply);
return ();
}
//
// Getters
//
@view
func name{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}() -> (name: felt) {
let (name) = ERC20.name();
return (name,);
}
@view
func symbol{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}() -> (symbol: felt) {
let (symbol) = ERC20.symbol();
return (symbol,);
}
@view
func totalSupply{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}() -> (
totalSupply: Uint256
) {
let (totalSupply: Uint256) = ERC20.total_supply();
return (totalSupply,);
}
@view
func decimals{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}() -> (
decimals: felt
) {
let (decimals) = ERC20.decimals();
return (decimals,);
}
@view
func balanceOf{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(account: felt) -> (
balance: Uint256
) {
let (balance: Uint256) = ERC20.balance_of(account);
return (balance,);
}
@view
func allowance{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(
owner: felt, spender: felt
) -> (remaining: Uint256) {
let (remaining: Uint256) = ERC20.allowance(owner, spender);
return (remaining,);
}
//
// Externals
//
@external
func faucet{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}() -> (success: felt) {
let amount: Uint256 = Uint256(100 * 1000000000000000000, 0);
let (caller) = get_caller_address();
ERC20._mint(caller, amount);
// Cairo equivalent to 'return (true)'
return (1,);
}
@external
func transfer{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(
recipient: felt, amount: Uint256
) -> (success: felt) {
ERC20.transfer(recipient, amount);
// Cairo equivalent to 'return (true)'
return (1,);
}
@external
func transferFrom{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(
sender: felt, recipient: felt, amount: Uint256
) -> (success: felt) {
ERC20.transfer_from(sender, recipient, amount);
// Cairo equivalent to 'return (true)'
return (1,);
}
@external
func approve{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(
spender: felt, amount: Uint256
) -> (success: felt) {
ERC20.approve(spender, amount);
// Cairo equivalent to 'return (true)'
return (1,);
}
@external
func increaseAllowance{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(
spender: felt, added_value: Uint256
) -> (success: felt) {
ERC20.increase_allowance(spender, added_value);
// Cairo equivalent to 'return (true)'
return (1,);
}
@external
func decreaseAllowance{syscall_ptr: felt*, pedersen_ptr: HashBuiltin*, range_check_ptr}(
spender: felt, subtracted_value: Uint256
) -> (success: felt) {
ERC20.decrease_allowance(spender, subtracted_value);
// Cairo equivalent to 'return (true)'
return (1,);
}