ERC20.etk

# @author @sw0nt - Saw-mon and Natalie
# @notice https://eips.ethereum.org/EIPS/eip-20

%import("macros/instructions.etk")

# storage slots
# 0: maping(address => uint256) balanceOf
# 1: mapping(address => mapping(address => uint256)) allowance

%import("function_selector.etk")
                                                # 4 byte sig
%import("functions/totalSupply.etk")            # 0x18160ddd
%import("functions/balanceOf.etk")              # 0x70a08231
%import("functions/transfer.etk")               # 0xa9059cbb
%import("functions/transferFrom.etk")           # 0x23b872dd
%import("functions/approve.etk")                # 0x095ea7b3
%import("functions/allowance.etk")              # 0xdd62ed3e

# optional
# %import("functions/name.etk")
# %import("functions/symbol.etk")
# %import("functions/decimals.etk")

# %import("functions/_mint.etk")
# %import("functions/_burn.etk")

returnValue:
    jumpdest

    returndatasize
    mstore

    push1 0x20
    returndatasize
    return

error:
    jumpdest

    returndatasize
    returndatasize
    revert