[Draft] Add ERC-20 Example #22
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Note: this commit was made making some use of `claude-3.5-sonnet` using Cursor (https://www.cursor.com/).
Adjust the `fun_balanceOf_abs_of_concrete` lemma so that `fun_balanceOf_user.lean` still builds successfully.
Copied across `Wheels.lean` and `ProofGenerator.hs` from `Ferinko/Workshop` branch, currently 7631d8. Co-authored-by: Frantisek Silvasi <[email protected]>
Restore existing proofs overwritten by the generator.
This makes the invocations of `clr_varstore,` behave the same as `clr_varstore` without the comma did prior to the changes to `Wheels.lean` in 61166b.
See the Solidity code this comes from: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/v5.0.2/contracts/token/ERC20/ERC20.sol#L307
Moved into `Predicate.lean`
Also add `sorry`s where this lemma was used.
Includes multiple `sorry`s.
For `_transfer` and `spendAllowance`
…wance` specs, in the success cases These functions are not pure.
And regenerate `erc20shim.yul`
Deleted `ERC20Shim` folder (and `All.lean`), regenerated using `vc`, then manually reverted some files in order to keep existing specs and proofs.
This file was accidentally overwritten while bringing in the changes from the `vc` generator in commit 6848b5.
Restore `balanceOf` spec and proof
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This pull request, currently a DRAFT, is to prepare for merging the ERC-20 example into
main.This is a work in progress.