The StaticDelegateCall.sol library and associated contracts enable contracts to delegatecall functions from other contracts without risking their own internal state from these calls. This is achieved by calling a special function which always reverts, but it reverts with the return data of the delegatecall that it performs. The contract has a try-catch block to handle the revert, allowing us to catch the revert data and transform it back into the original return data from the delegatecall if it was successful, or bubble up the revert if it was not.
The delegateCallAndRevert function performs an arbitrary delegatecall. It always reverts with the result of that call, encoding the success status and return or revert data. The revert data is wrapped and reverts with the ABI-encoded success and return or revert data values.
This pattern is particularly useful for scenarios where you are constrained by bytecode size limits in your contract and you still want to have rich view functions. Using this library, you can have a separate contract that you delegatecall which mimics the storage layout of your main contract. This allows you to extract logic that isn't essential to maintain the state of your application, while still having logic for rich view methods for your UI.
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