{
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    "source": "pragma solidity ^0.8.0;\npragma abicoder v2;\n\n// SPDX-License-Identifier: GPL-3.0-only\n\nimport \"@openzeppelin/contracts/utils/cryptography/ECDSA.sol\";\n\nimport \"../utils/GsnTypes.sol\";\nimport \"../utils/GsnEip712Library.sol\";\nimport \"../utils/GsnUtils.sol\";\n\ncontract TestUtil {\n    using ECDSA for bytes;\n    using ECDSA for bytes32;\n\n    function libRelayRequestName() public pure returns (string memory) {\n        return GsnEip712Library.RELAY_REQUEST_NAME;\n    }\n\n    function libRelayRequestType() public pure returns (string memory) {\n        return string(GsnEip712Library.RELAY_REQUEST_TYPE);\n    }\n\n    function libRelayRequestTypeHash() public pure returns (bytes32) {\n        return GsnEip712Library.RELAY_REQUEST_TYPEHASH;\n    }\n\n    function libRelayRequestSuffix() public pure returns (string memory) {\n        return GsnEip712Library.RELAY_REQUEST_SUFFIX;\n    }\n\n    //helpers for test to call the library funcs:\n    function callForwarderVerify(\n        GsnTypes.RelayRequest calldata relayRequest,\n        bytes calldata signature\n    )\n    external\n    view {\n        GsnEip712Library.verify(\"GSN Relayed Transaction\", relayRequest, signature);\n    }\n\n    function callForwarderVerifyAndCall(\n        GsnTypes.RelayRequest calldata relayRequest,\n        bytes calldata signature\n    )\n    external\n    returns (\n        bool success,\n        bytes memory ret\n    ) {\n        bool forwarderSuccess;\n        (forwarderSuccess, success, ret) = GsnEip712Library.execute(\"GSN Relayed Transaction\", relayRequest, signature);\n        if (!forwarderSuccess) {\n            GsnUtils.revertWithData(ret);\n        }\n        emit Called(success, success == false ? ret : bytes(\"\"));\n    }\n\n    event Called(bool success, bytes error);\n\n    function splitRequest(\n        GsnTypes.RelayRequest calldata relayRequest\n    )\n    external\n    pure\n    returns (\n        bytes32 typeHash,\n        bytes memory suffixData\n    ) {\n        (suffixData) = GsnEip712Library.splitRequest(relayRequest);\n        typeHash = GsnEip712Library.RELAY_REQUEST_TYPEHASH;\n    }\n\n    function libDomainSeparator(address forwarder) public view returns (bytes32) {\n        return GsnEip712Library.domainSeparator(\"GSN Relayed Transaction\", forwarder);\n    }\n\n    function libGetChainID() public view returns (uint256) {\n        return GsnEip712Library.getChainID();\n    }\n\n    function _ecrecover(string memory message, bytes memory signature) public pure returns (address) {\n        return bytes(message).toEthSignedMessageHash().recover(signature);\n    }\n}",
    "sourcePath": "/Users/alexf/gsn2/packages/contracts/solpp/test/TestUtil.sol",
    "ast": {
        "absolutePath": "/Users/alexf/gsn2/packages/contracts/solpp/test/TestUtil.sol",
        "exportedSymbols": {
            "ECDSA": [
                12122
            ],
            "GsnEip712Library": [
                8464
            ],
            "GsnTypes": [
                8492
            ],
            "GsnUtils": [
                8572
            ],
            "IERC165": [
                12352
            ],
            "IERC2771Recipient": [
                5374
            ],
            "IForwarder": [
                5129
            ],
            "MinLibBytes": [
                8687
            ],
            "Strings": [
                11734
            ],
            "TestUtil": [
                8012
            ]
        },
        "id": 8013,
        "license": "GPL-3.0-only",
        "nodeType": "SourceUnit",
        "nodes": [
            {
                "id": 7819,
                "literals": [
                    "solidity",
                    "^",
                    "0.8",
                    ".0"
                ],
                "nodeType": "PragmaDirective",
                "src": "0:23:36"
            },
            {
                "id": 7820,
                "literals": [
                    "abicoder",
                    "v2"
                ],
                "nodeType": "PragmaDirective",
                "src": "24:19:36"
            },
            {
                "absolutePath": "@openzeppelin/contracts/utils/cryptography/ECDSA.sol",
                "file": "@openzeppelin/contracts/utils/cryptography/ECDSA.sol",
                "id": 7821,
                "nameLocation": "-1:-1:-1",
                "nodeType": "ImportDirective",
                "scope": 8013,
                "sourceUnit": 12123,
                "src": "87:62:36",
                "symbolAliases": [],
                "unitAlias": ""
            },
            {
                "absolutePath": "/Users/alexf/gsn2/packages/contracts/solpp/utils/GsnTypes.sol",
                "file": "../utils/GsnTypes.sol",
                "id": 7822,
                "nameLocation": "-1:-1:-1",
                "nodeType": "ImportDirective",
                "scope": 8013,
                "sourceUnit": 8493,
                "src": "151:31:36",
                "symbolAliases": [],
                "unitAlias": ""
            },
            {
                "absolutePath": "/Users/alexf/gsn2/packages/contracts/solpp/utils/GsnEip712Library.sol",
                "file": "../utils/GsnEip712Library.sol",
                "id": 7823,
                "nameLocation": "-1:-1:-1",
                "nodeType": "ImportDirective",
                "scope": 8013,
                "sourceUnit": 8465,
                "src": "183:39:36",
                "symbolAliases": [],
                "unitAlias": ""
            },
            {
                "absolutePath": "/Users/alexf/gsn2/packages/contracts/solpp/utils/GsnUtils.sol",
                "file": "../utils/GsnUtils.sol",
                "id": 7824,
                "nameLocation": "-1:-1:-1",
                "nodeType": "ImportDirective",
                "scope": 8013,
                "sourceUnit": 8573,
                "src": "223:31:36",
                "symbolAliases": [],
                "unitAlias": ""
            },
            {
                "abstract": false,
                "baseContracts": [],
                "contractDependencies": [],
                "contractKind": "contract",
                "fullyImplemented": true,
                "id": 8012,
                "linearizedBaseContracts": [
                    8012
                ],
                "name": "TestUtil",
                "nameLocation": "265:8:36",
                "nodeType": "ContractDefinition",
                "nodes": [
                    {
                        "id": 7827,
                        "libraryName": {
                            "id": 7825,
                            "name": "ECDSA",
                            "nodeType": "IdentifierPath",
                            "referencedDeclaration": 12122,
                            "src": "286:5:36"
                        },
                        "nodeType": "UsingForDirective",
                        "src": "280:22:36",
                        "typeName": {
                            "id": 7826,
                            "name": "bytes",
                            "nodeType": "ElementaryTypeName",
                            "src": "296:5:36",
                            "typeDescriptions": {
                                "typeIdentifier": "t_bytes_storage_ptr",
                                "typeString": "bytes"
                            }
                        }
                    },
                    {
                        "id": 7830,
                        "libraryName": {
                            "id": 7828,
                            "name": "ECDSA",
                            "nodeType": "IdentifierPath",
                            "referencedDeclaration": 12122,
                            "src": "313:5:36"
                        },
                        "nodeType": "UsingForDirective",
                        "src": "307:24:36",
                        "typeName": {
                            "id": 7829,
                            "name": "bytes32",
                            "nodeType": "ElementaryTypeName",
                            "src": "323:7:36",
                            "typeDescriptions": {
                                "typeIdentifier": "t_bytes32",
                                "typeString": "bytes32"
                            }
                        }
                    },
                    {
                        "body": {
                            "id": 7838,
                            "nodeType": "Block",
                            "src": "404:59:36",
                            "statements": [
                                {
                                    "expression": {
                                        "expression": {
                                            "id": 7835,
                                            "name": "GsnEip712Library",
                                            "nodeType": "Identifier",
                                            "overloadedDeclarations": [],
                                            "referencedDeclaration": 8464,
                                            "src": "421:16:36",
                                            "typeDescriptions": {
                                                "typeIdentifier": "t_type$_t_contract$_GsnEip712Library_$8464_$",
                                                "typeString": "type(library GsnEip712Library)"
                                            }
                                        },
                                        "id": 7836,
                                        "isConstant": false,
                                        "isLValue": false,
                                        "isPure": false,
                                        "lValueRequested": false,
                                        "memberName": "RELAY_REQUEST_NAME",
                                        "nodeType": "MemberAccess",
                                        "referencedDeclaration": 8097,
                                        "src": "421:35:36",
                                        "typeDescriptions": {
                                            "typeIdentifier": "t_string_memory_ptr",
                                            "typeString": "string memory"
                                        }
                                    },
                                    "functionReturnParameters": 7834,
                                    "id": 7837,
                                    "nodeType": "Return",
                                    "src": "414:42:36"
                                }
                            ]
                        },
                        "functionSelector": "37d899ce",
                        "id": 7839,
                        "implemented": true,
                        "kind": "function",
                        "modifiers": [],
                        "name": "libRelayRequestName",
                        "nameLocation": "346:19:36",
                        "nodeType": "FunctionDefinition",
                        "parameters": {
                            "id": 7831,
                            "nodeType": "ParameterList",
                            "parameters": [],
                            "src": "365:2:36"
                        },
                        "returnParameters": {
                            "id": 7834,
                            "nodeType": "ParameterList",
                            "parameters": [
                                {
                                    "constant": false,
                                    "id": 7833,
                                    "mutability": "mutable",
                                    "name": "",
                                    "nameLocation": "-1:-1:-1",
                                    "nodeType": "VariableDeclaration",
                                    "scope": 7839,
                                    "src": "389:13:36",
                                    "stateVariable": false,
                                    "storageLocation": "memory",
                                    "typeDescriptions": {
                                        "typeIdentifier": "t_string_memory_ptr",
                                        "typeString": "string"
                                    },
                                    "typeName": {
                                        "id": 7832,
                                        "name": "string",
                                        "nodeType": "ElementaryTypeName",
                                        "src": "389:6:36",
                                        "typeDescriptions": {
                                            "typeIdentifier": "t_string_storage_ptr",
                                            "typeString": "string"
                                        }
                                    },
                                    "visibility": "internal"
                                }
                            ],
                            "src": "388:15:36"
                        },
                        "scope": 8012,
                        "src": "337:126:36",
                        "stateMutability": "pure",
                        "virtual": false,
                        "visibility": "public"
                    },
                    {
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                            "nodeType": "Block",
                            "src": "536:67:36",
                            "statements": [
                                {
                                    "expression": {
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