cadenceUpgrader

UPDATE:

Ran on mainnet for ~3000 contracts.

Remaining problems: ( needs manual fix )

• capabilities on private paths
• impure operation on view context
• dereferencing structs ( metadata etc )
• array mutation

Usage:

• put your contracts in to contracts directory ( imports should be string imports, see examples )
• run
• upgraded contracts will be on contractsV1 directory

it should parse all dependencies and upgrade all needed

PS: I wrote this in like 2-3 hours, not 100% but works pretty good. some samples in https://github.com/bluesign/cadenceUpgrader/tree/main/test

**NOTE: This doesn't add new entitlements, as is pretty unsecure for complex contracts. **

Upgrading NFT contracts to Cadence 1.0

Applies few rules are applied:

• Applies LS suggestions
• External Interface entitlements
• Internal Interfaces changed to be compatible with external ones
• Metadataview / Resolver updates
• Fixes some castings
• Fixes some references ( auth reference needs etc )
• Removes legacy destructors
• Tries to fix function purity ( view )
• Fixes type restrictions
• Implements missing interface functions ( as stubs or preset for NFT etc )
• Fixes &Account references ( link, getCapability, borrow etc )
• Fixes missing labels
• Tries to fix nested references
• Fixes some invocations ...