mirror of
https://github.com/Instadapp/dsa-connectors.git
synced 2024-07-29 22:37:00 +00:00
462 lines
15 KiB
Solidity
462 lines
15 KiB
Solidity
pragma solidity ^0.7.0;
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interface TokenInterface {
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function approve(address, uint256) external;
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function transfer(address, uint) external;
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function transferFrom(address, address, uint) external;
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function deposit() external payable;
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function withdraw(uint) external;
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function balanceOf(address) external view returns (uint);
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function decimals() external view returns (uint);
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}
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interface MemoryInterface {
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function getUint(uint id) external returns (uint num);
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function setUint(uint id, uint val) external;
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}
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interface InstaMapping {
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function cTokenMapping(address) external view returns (address);
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function gemJoinMapping(bytes32) external view returns (address);
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}
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interface AccountInterface {
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function enable(address) external;
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function disable(address) external;
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function isAuth(address) external view returns (bool);
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}
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abstract contract Stores {
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/**
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* @dev Return ethereum address
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*/
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address constant internal ethAddr = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
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/**
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* @dev Return Wrapped ETH address
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*/
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address constant internal wethAddr = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
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/**
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* @dev Return memory variable address
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*/
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MemoryInterface constant internal instaMemory = MemoryInterface(0x8a5419CfC711B2343c17a6ABf4B2bAFaBb06957F);
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/**
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* @dev Return InstaDApp Mapping Addresses
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*/
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InstaMapping constant internal instaMapping = InstaMapping(0xe81F70Cc7C0D46e12d70efc60607F16bbD617E88);
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/**
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* @dev Get Uint value from InstaMemory Contract.
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*/
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function getUint(uint getId, uint val) internal returns (uint returnVal) {
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returnVal = getId == 0 ? val : instaMemory.getUint(getId);
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}
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/**
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* @dev Set Uint value in InstaMemory Contract.
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*/
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function setUint(uint setId, uint val) virtual internal {
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if (setId != 0) instaMemory.setUint(setId, val);
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}
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}
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/**
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* @dev Wrappers over Solidity's arithmetic operations with added overflow
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* checks.
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*
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* Arithmetic operations in Solidity wrap on overflow. This can easily result
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* in bugs, because programmers usually assume that an overflow raises an
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* error, which is the standard behavior in high level programming languages.
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* `SafeMath` restores this intuition by reverting the transaction when an
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* operation overflows.
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*
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* Using this library instead of the unchecked operations eliminates an entire
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* class of bugs, so it's recommended to use it always.
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*/
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library SafeMath {
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/**
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* @dev Returns the addition of two unsigned integers, with an overflow flag.
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*
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* _Available since v3.4._
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*/
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function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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uint256 c = a + b;
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if (c < a) return (false, 0);
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return (true, c);
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}
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/**
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* @dev Returns the substraction of two unsigned integers, with an overflow flag.
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*
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* _Available since v3.4._
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*/
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function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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if (b > a) return (false, 0);
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return (true, a - b);
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}
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/**
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* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
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*
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* _Available since v3.4._
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*/
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function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
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// benefit is lost if 'b' is also tested.
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// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
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if (a == 0) return (true, 0);
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uint256 c = a * b;
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if (c / a != b) return (false, 0);
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return (true, c);
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}
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/**
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* @dev Returns the division of two unsigned integers, with a division by zero flag.
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*
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* _Available since v3.4._
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*/
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function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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if (b == 0) return (false, 0);
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return (true, a / b);
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}
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/**
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* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
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*
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* _Available since v3.4._
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*/
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function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
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if (b == 0) return (false, 0);
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return (true, a % b);
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}
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/**
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* @dev Returns the addition of two unsigned integers, reverting on
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* overflow.
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*
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* Counterpart to Solidity's `+` operator.
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*
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* Requirements:
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*
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* - Addition cannot overflow.
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*/
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function add(uint256 a, uint256 b) internal pure returns (uint256) {
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uint256 c = a + b;
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require(c >= a, "SafeMath: addition overflow");
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return c;
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}
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/**
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* @dev Returns the subtraction of two unsigned integers, reverting on
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* overflow (when the result is negative).
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*
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* Counterpart to Solidity's `-` operator.
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*
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* Requirements:
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*
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* - Subtraction cannot overflow.
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*/
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function sub(uint256 a, uint256 b) internal pure returns (uint256) {
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require(b <= a, "SafeMath: subtraction overflow");
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return a - b;
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}
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/**
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* @dev Returns the multiplication of two unsigned integers, reverting on
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* overflow.
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*
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* Counterpart to Solidity's `*` operator.
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*
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* Requirements:
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*
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* - Multiplication cannot overflow.
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*/
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function mul(uint256 a, uint256 b) internal pure returns (uint256) {
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if (a == 0) return 0;
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uint256 c = a * b;
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require(c / a == b, "SafeMath: multiplication overflow");
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return c;
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}
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/**
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* @dev Returns the integer division of two unsigned integers, reverting on
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* division by zero. The result is rounded towards zero.
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*
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* Counterpart to Solidity's `/` operator. Note: this function uses a
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* `revert` opcode (which leaves remaining gas untouched) while Solidity
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* uses an invalid opcode to revert (consuming all remaining gas).
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*
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* Requirements:
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*
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* - The divisor cannot be zero.
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*/
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function div(uint256 a, uint256 b) internal pure returns (uint256) {
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require(b > 0, "SafeMath: division by zero");
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return a / b;
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}
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/**
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* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
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* reverting when dividing by zero.
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*
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* Counterpart to Solidity's `%` operator. This function uses a `revert`
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* opcode (which leaves remaining gas untouched) while Solidity uses an
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* invalid opcode to revert (consuming all remaining gas).
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*
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* Requirements:
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*
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* - The divisor cannot be zero.
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*/
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function mod(uint256 a, uint256 b) internal pure returns (uint256) {
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require(b > 0, "SafeMath: modulo by zero");
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return a % b;
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}
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/**
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* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
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* overflow (when the result is negative).
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*
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* CAUTION: This function is deprecated because it requires allocating memory for the error
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* message unnecessarily. For custom revert reasons use {trySub}.
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*
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* Counterpart to Solidity's `-` operator.
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*
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* Requirements:
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*
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* - Subtraction cannot overflow.
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*/
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function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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require(b <= a, errorMessage);
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return a - b;
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}
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/**
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* @dev Returns the integer division of two unsigned integers, reverting with custom message on
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* division by zero. The result is rounded towards zero.
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*
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* CAUTION: This function is deprecated because it requires allocating memory for the error
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* message unnecessarily. For custom revert reasons use {tryDiv}.
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*
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* Counterpart to Solidity's `/` operator. Note: this function uses a
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* `revert` opcode (which leaves remaining gas untouched) while Solidity
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* uses an invalid opcode to revert (consuming all remaining gas).
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*
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* Requirements:
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*
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* - The divisor cannot be zero.
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*/
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function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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require(b > 0, errorMessage);
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return a / b;
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}
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/**
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* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
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* reverting with custom message when dividing by zero.
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*
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* CAUTION: This function is deprecated because it requires allocating memory for the error
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* message unnecessarily. For custom revert reasons use {tryMod}.
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*
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* Counterpart to Solidity's `%` operator. This function uses a `revert`
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* opcode (which leaves remaining gas untouched) while Solidity uses an
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* invalid opcode to revert (consuming all remaining gas).
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*
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* Requirements:
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*
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* - The divisor cannot be zero.
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*/
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function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
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require(b > 0, errorMessage);
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return a % b;
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}
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}
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contract DSMath {
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uint constant WAD = 10 ** 18;
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uint constant RAY = 10 ** 27;
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function add(uint x, uint y) internal pure returns (uint z) {
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z = SafeMath.add(x, y);
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}
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function sub(uint x, uint y) internal virtual pure returns (uint z) {
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z = SafeMath.sub(x, y);
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}
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function mul(uint x, uint y) internal pure returns (uint z) {
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z = SafeMath.mul(x, y);
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}
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function div(uint x, uint y) internal pure returns (uint z) {
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z = SafeMath.div(x, y);
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}
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function wmul(uint x, uint y) internal pure returns (uint z) {
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z = SafeMath.add(SafeMath.mul(x, y), WAD / 2) / WAD;
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}
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function wdiv(uint x, uint y) internal pure returns (uint z) {
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z = SafeMath.add(SafeMath.mul(x, WAD), y / 2) / y;
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}
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function rdiv(uint x, uint y) internal pure returns (uint z) {
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z = SafeMath.add(SafeMath.mul(x, RAY), y / 2) / y;
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}
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function rmul(uint x, uint y) internal pure returns (uint z) {
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z = SafeMath.add(SafeMath.mul(x, y), RAY / 2) / RAY;
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}
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function toInt(uint x) internal pure returns (int y) {
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y = int(x);
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require(y >= 0, "int-overflow");
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}
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function toRad(uint wad) internal pure returns (uint rad) {
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rad = mul(wad, 10 ** 27);
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}
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}
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abstract contract Basic is DSMath, Stores {
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function convert18ToDec(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
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amt = (_amt / 10 ** (18 - _dec));
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}
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function convertTo18(uint _dec, uint256 _amt) internal pure returns (uint256 amt) {
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amt = mul(_amt, 10 ** (18 - _dec));
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}
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function getTokenBal(TokenInterface token) internal view returns(uint _amt) {
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_amt = address(token) == ethAddr ? address(this).balance : token.balanceOf(address(this));
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}
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function getTokensDec(TokenInterface buyAddr, TokenInterface sellAddr) internal view returns(uint buyDec, uint sellDec) {
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buyDec = address(buyAddr) == ethAddr ? 18 : buyAddr.decimals();
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sellDec = address(sellAddr) == ethAddr ? 18 : sellAddr.decimals();
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}
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function encodeEvent(string memory eventName, bytes memory eventParam) internal pure returns (bytes memory) {
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return abi.encode(eventName, eventParam);
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}
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function changeEthAddress(address buy, address sell) internal pure returns(TokenInterface _buy, TokenInterface _sell){
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_buy = buy == ethAddr ? TokenInterface(wethAddr) : TokenInterface(buy);
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_sell = sell == ethAddr ? TokenInterface(wethAddr) : TokenInterface(sell);
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}
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function convertEthToWeth(bool isEth, TokenInterface token, uint amount) internal {
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if(isEth) token.deposit{value: amount}();
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}
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function convertWethToEth(bool isEth, TokenInterface token, uint amount) internal {
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if(isEth) {
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token.approve(address(token), amount);
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token.withdraw(amount);
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}
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}
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}
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interface RootChainManagerInterface {
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function rootToChildToken(address user) external view returns(address);
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function depositEtherFor(address user) external payable;
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function depositFor(
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address user,
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address rootToken,
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bytes calldata depositData
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) external;
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function exit(bytes calldata inputData) external;
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}
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interface DepositManagerProxyInterface {
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function depositERC20ForUser(
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address _token,
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address _user,
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uint256 _amount
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) external;
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}
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abstract contract Helpers is DSMath, Basic {
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/**
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* @dev Polygon POS Bridge ERC20 Predicate
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*/
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address internal constant erc20Predicate = 0x40ec5B33f54e0E8A33A975908C5BA1c14e5BbbDf;
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/**
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* @dev Polygon POS Bridge Manager
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*/
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RootChainManagerInterface internal constant migrator = RootChainManagerInterface(0xA0c68C638235ee32657e8f720a23ceC1bFc77C77);
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/**
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* @dev Polygon Plasma Bridge Manager
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*/
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DepositManagerProxyInterface internal constant migratorPlasma = DepositManagerProxyInterface(0x401F6c983eA34274ec46f84D70b31C151321188b);
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}
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contract Events {
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event LogDeposit(
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address targetDsa,
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address token,
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uint256 amt,
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uint256 getId,
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uint256 setId
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);
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event LogWithdraw(bytes proof);
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}
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abstract contract PolygonBridgeResolver is Events, Helpers {
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/**
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* @dev Deposit assets to the bridge.
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* @notice Deposit assets to the bridge.
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* @param targetDsa The address to receive the token on Polygon
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* @param token The address of the token to deposit. (For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
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* @param amt The amount of tokens to deposit. (For max: `uint256(-1)`)
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* @param getId ID to retrieve amt.
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* @param setId ID stores the amount of tokens deposit.
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*/
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function deposit(
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address targetDsa,
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address token,
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uint256 amt,
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uint256 getId,
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uint256 setId
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) external payable {
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uint _amt = getUint(getId, amt);
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if (token == ethAddr) {
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_amt = _amt == uint(-1) ? address(this).balance : _amt;
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migrator.depositEtherFor{value: _amt}(targetDsa);
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} else {
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TokenInterface _token = TokenInterface(token);
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_amt = _amt == uint(-1) ? _token.balanceOf(address(this)) : _amt;
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if (migrator.rootToChildToken(token) != address(0)) {
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_token.approve(erc20Predicate, _amt);
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migrator.depositFor(targetDsa, token, abi.encode(_amt));
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} else {
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_token.approve(address(migratorPlasma), _amt);
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migratorPlasma.depositERC20ForUser(token, targetDsa, _amt);
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}
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}
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setUint(setId, _amt);
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emit LogDeposit(targetDsa, token, _amt, getId, setId);
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}
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}
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contract ConnectPolygonBridge is PolygonBridgeResolver {
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/**
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* @dev Connector Details
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*/
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function connectorID() public pure returns(uint _type, uint _id) {
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(_type, _id) = (1, 100);
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}
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string public constant name = "Polygon-Bridge-v1.1";
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} |