42 lines
1.5 KiB
Solidity
42 lines
1.5 KiB
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity >=0.8.19 <=0.9.0;
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import { Script } from "forge-std/Script.sol";
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abstract contract BaseScript is Script {
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/// @dev Included to enable compilation of the script without a $MNEMONIC environment variable.
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string internal constant TEST_MNEMONIC = "test test test test test test test test test test test junk";
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/// @dev Needed for the deterministic deployments.
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bytes32 internal constant ZERO_SALT = bytes32(0);
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/// @dev The address of the transaction broadcaster.
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address internal broadcaster;
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/// @dev Used to derive the broadcaster's address if $ETH_FROM is not defined.
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string internal mnemonic;
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/// @dev Initializes the transaction broadcaster like this:
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///
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/// - If $ETH_FROM is defined, use it.
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/// - Otherwise, derive the broadcaster address from $MNEMONIC.
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/// - If $MNEMONIC is not defined, default to a test mnemonic.
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///
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/// The use case for $ETH_FROM is to specify the broadcaster key and its address via the command line.
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constructor() {
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address from = vm.envOr({ name: "ETH_FROM", defaultValue: address(0) });
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if (from != address(0)) {
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broadcaster = from;
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} else {
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mnemonic = vm.envOr({ name: "MNEMONIC", defaultValue: TEST_MNEMONIC });
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(broadcaster,) = deriveRememberKey({ mnemonic: mnemonic, index: 0 });
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}
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}
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modifier broadcast() {
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vm.startBroadcast(broadcaster);
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_;
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vm.stopBroadcast();
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}
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}
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