{
    "Function": "burnSynth",
    "File": "contracts/dex-v2/pool/VaderPoolV2.sol",
    "Parent Contracts": [
        "node_modules/@openzeppelin/contracts/access/Ownable.sol",
        "contracts/dex-v2/pool/BasePoolV2.sol",
        "node_modules/@openzeppelin/contracts/security/ReentrancyGuard.sol",
        "node_modules/@openzeppelin/contracts/token/ERC721/ERC721.sol",
        "node_modules/@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol",
        "contracts/interfaces/dex-v2/pool/IVaderPoolV2.sol",
        "node_modules/@openzeppelin/contracts/token/ERC721/IERC721.sol",
        "node_modules/@openzeppelin/contracts/utils/introspection/ERC165.sol",
        "node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol",
        "node_modules/@openzeppelin/contracts/utils/Context.sol",
        "contracts/dex/utils/GasThrottle.sol",
        "contracts/shared/ProtocolConstants.sol",
        "contracts/interfaces/dex-v2/pool/IBasePoolV2.sol"
    ],
    "High-Level Calls": [
        "ISynth",
        "ISynthFactory",
        "SafeERC20",
        "VaderMath",
        "SafeERC20"
    ],
    "Internal Calls": [
        "require(bool,string)",
        "getReserves",
        "_update",
        "require(bool,string)",
        "nonReentrant"
    ],
    "Library Calls": [
        "safeTransferFrom",
        "calculateSwap",
        "safeTransfer"
    ],
    "Low-Level Calls": [],
    "Code": "function burnSynth(\r\n        IERC20 foreignAsset,\r\n        uint256 synthAmount,\r\n        address to\r\n    ) external override nonReentrant returns (uint256 amountNative) {\r\n        ISynth synth = synthFactory.synths(foreignAsset);\r\n\r\n        require(\r\n            synth != ISynth(_ZERO_ADDRESS),\r\n            \"VaderPoolV2::burnSynth: Inexistent Synth\"\r\n        );\r\n\r\n        require(\r\n            synthAmount > 0,\r\n            \"VaderPoolV2::burnSynth: Insufficient Synth Amount\"\r\n        );\r\n\r\n        IERC20(synth).safeTransferFrom(msg.sender, address(this), synthAmount);\r\n        synth.burn(synthAmount);\r\n\r\n        (uint112 reserveNative, uint112 reserveForeign, ) = getReserves(\r\n            foreignAsset\r\n        ); // gas savings\r\n\r\n        amountNative = VaderMath.calculateSwap(\r\n            synthAmount,\r\n            reserveForeign,\r\n            reserveNative\r\n        );\r\n\r\n        // TODO: Clarify\r\n        _update(\r\n            foreignAsset,\r\n            reserveNative - amountNative,\r\n            reserveForeign,\r\n            reserveNative,\r\n            reserveForeign\r\n        );\r\n\r\n        nativeAsset.safeTransfer(to, amountNative);\r\n    }"
}