Dror Tirosh fc171eb64a AA 92 simulate execution (#152) ...

1. A new API for an account (or paymaster) to report signature check validation: instead of revert, they should return `SIG_VALIDATION_FAILED` (1) to mark signature validation.  checking for `tx.origin` as zero is no longer in use.
2. ValidateUserOp returns the SIG_VALIDATION_FAILED value (like any other deadline) for a bundler to check.
3. `handleOps`  reverts on such signature failure.
4. a new `simulateHandleOp()` helper method, which executes a full UserOp (validation+execution).
   like `validateUserOp`, it reverts so it never commits changes on-chain, and doesn't check for signatures, and only used for off-chain simulation. This way, a userOp can be "estimated", even if it depends on the deployed account (e.g. it is a method call on a newly deployed account, or depends on the account's state such as its balance)

2022-12-26 16:09:40 +02:00

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