fix: fix v in self_permit and add example

[shuhuiluo]

Introduced a new self_permit example to demonstrate signing ERC20 permits and encoding selfPermit calls for Uniswap V3. Improved encoding logic in self_permit.rs by adding EIP-712 signing hash functionality and fixing signature encoding with +27 adjustment. Updated version to 3.1.0 to reflect new functionality.

Summary by CodeRabbit

• New Features

  • Updated the package version of uniswap-v3-sdk to 3.1.0.
  • Introduced a new example demonstrating ERC20 permit signing with the self_permit feature.

• Bug Fixes

  • Enhanced the encode_permit function for better token type flexibility and corrected encoding logic for permit calls.

• Documentation

  • Updated comments and examples to reflect recent changes and improvements in functionality.

[coderabbitai]

Caution

Review failed

The pull request is closed.

Walkthrough

Adjusts glasses Fascinating! This pull request introduces a minor version update to the Uniswap V3 SDK, adding a new self_permit example that demonstrates ERC20 permit signing functionality. The changes primarily involve updating the Cargo.toml configuration, modifying interface declarations, and implementing a new method for EIP-712 signing hash computation.

Changes

File	Change Summary
Cargo.toml	- Version bumped from 3.0.0 to 3.1.0 - Added self_permit example with "extensions" feature
examples/self_permit.rs	- New example demonstrating ERC20 permit signing - Implements USDC token interface
examples/swap_router.rs	- Converted IERC20 from contract to interface
src/self_permit.rs	- Added eip712_signing_hash method - Updated encode_permit function signature - Modified permit encoding logic

Sequence Diagram

sequenceDiagram
    participant Signer
    participant USDC
    participant NonfungiblePositionManager
    
    Signer->>USDC: Generate Permit Signature
    Signer->>NonfungiblePositionManager: Send Signed Permit
    NonfungiblePositionManager-->>USDC: Verify Permit
    NonfungiblePositionManager-->>Signer: Update Allowance

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Possibly Related PRs

• feat: Add EIP712 signing support for NFT permits #89: EIP712 signing support for NFT permits
• feat: refactor permit types and add ERC20 permit support #91: Refactored permit types and ERC20 permit support
• chore: refactor examples and types, and add new swap_router example #119: New swap_router example demonstrating token swaps

Poem

Behold, the permit's cryptic dance
Where bytes and signatures entrance
A blockchain ballet, precise and neat
SDK magic, now complete! 🧪✨
Bazinga, smart contracts unite!

mic drop

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📜 Recent review details

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Review profile: ASSERTIVE
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📥 Commits

Reviewing files that changed from the base of the PR and between 3ad643d and 3347116.

📒 Files selected for processing (4)

• Cargo.toml (2 hunks)
• examples/self_permit.rs (1 hunks)
• examples/swap_router.rs (1 hunks)
• src/self_permit.rs (8 hunks)

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