Digital cash grand refactor + FungiblePayment#2274
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andrei-marinica merged 34 commits intomasterfrom Jan 31, 2026
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Pull request overview
This pull request implements a comprehensive refactoring of the digital cash contract, modernizing its architecture and improving the fee management system. The changes introduce a new FungiblePayment type to the framework and completely redesign how deposits and fees are handled in the digital cash contract.
Changes:
- Introduced
FungiblePayment<M>type in the framework for handling fungible tokens (tokens with nonce = 0) - Completely refactored the digital cash contract's fee system from whitelist/blacklist to a flexible base fee configuration with global toggle
- Replaced time-based expiration (rounds) with timestamp-based expiration (milliseconds)
- Migrated from
ManagedAddressdeposit keys toDepositKey(ED25519 public keys) for cryptographic check functionality - Renamed endpoints for clarity (e.g.,
withdraw→withdrawExpired,whitelistFeeToken→setFee)
Reviewed changes
Copilot reviewed 36 out of 37 changed files in this pull request and generated 3 comments.
Show a summary per file
| File | Description |
|---|---|
| framework/derive/src/preprocessing/substitution_list.rs | Adds FungiblePayment to managed types list for code generation |
| framework/base/src/types/managed/wrapped/token/payment.rs | Adds fungible_or_panic conversion method and manual TypeAbi impl |
| framework/base/src/types/managed/wrapped/token/fungible_payment.rs | New FungiblePayment type for fungible-only tokens |
| framework/base/src/types/managed/wrapped/token.rs | Exports new FungiblePayment type |
| framework/base/src/err_msg.rs | Renames error message constant for consistency |
| framework/base/src/contract_base/wrappers/call_value_wrapper.rs | Updates to use renamed error constant |
| contracts/examples/order-book/pair/src/*.rs | Renames local FungiblePayment to OrderBookFungiblePayment to avoid conflict |
| contracts/examples/digital-cash/wasm/src/lib.rs | Updates exported endpoint list (11→10 endpoints) |
| contracts/examples/digital-cash/tests/*.rs | Reorders tests alphabetically |
| contracts/examples/digital-cash/src/storage.rs | Completely redesigned storage model with new DepositInfo and fee structures |
| contracts/examples/digital-cash/src/signature_operations.rs | Refactored withdraw/claim/forward logic with improved documentation |
| contracts/examples/digital-cash/src/pay_fee_and_fund.rs | Simplified fee payment logic using new fee system |
| contracts/examples/digital-cash/src/digital_cash_deposit.rs | New module for deposit validation and fee management |
| contracts/examples/digital-cash/src/digital_cash.rs | Updated init and endpoints for new fee system |
| contracts/examples/digital-cash/src/digital_cash_proxy.rs | Updated proxy with comprehensive documentation |
| contracts/examples/digital-cash/scenarios/*.scen.json | Updated all scenarios for new API and EGLD-000000 migration |
| contracts/examples/digital-cash/README.md | Updated documentation with new contract behavior |
| contracts/examples/digital-cash/Cargo.toml | Minor formatting fix |
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Pull request overview
This pull request implements a comprehensive refactoring of the digital cash contract, modernizing its architecture and improving the fee management system. The changes introduce a new
FungiblePaymenttype to the framework and completely redesign how deposits and fees are handled in the digital cash contract.Acknowledgement
Many thanks to @alyn509 for his sizeable contribution to this PR!
Changes:
FungiblePayment<M>type in the framework for handling fungible tokens (tokens with nonce = 0)ManagedAddressdeposit keys toDepositKey(ED25519 public keys) for cryptographic check functionalitywithdraw→withdrawExpired,whitelistFeeToken→setFee)