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withdraw assets without share conversion #115

Merged
merged 1 commit into from
Dec 18, 2024
Merged

withdraw assets without share conversion #115

merged 1 commit into from
Dec 18, 2024

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aazhou1
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@aazhou1 aazhou1 commented Dec 18, 2024

Summary by CodeRabbit

  • New Features

    • Simplified withdrawal process from the Yearn vault.
    • New parameter for contract initialization to enhance clarity.
    • Added management functions for pausing/unpausing deposits and strategies.
    • Enhanced error handling with custom messages for various failure conditions.
  • Bug Fixes

    • Improved liquidity management and asset value calculations.
  • Refactor

    • Updated internal functions for better compliance with defined thresholds.

@aazhou1 aazhou1 requested a review from 0xddong December 18, 2024 20:20
@aazhou1 aazhou1 self-assigned this Dec 18, 2024
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coderabbitai bot commented Dec 18, 2024

Walkthrough

The pull request introduces modifications to the Strategy contract in src/Strategy.sol. The changes focus on refining the contract's functionality, particularly in asset withdrawal, constructor initialization, and management functions. The updates include adjusting the withdrawal process, enhancing error handling, and improving internal logic for managing liquidity and asset values. The constructor now includes a new parameter for strategy initialization, and various management functions have been added to control strategy parameters.

Changes

File Change Summary
src/Strategy.sol - Updated _withdrawAsset function to directly pass withdrawal amount
- Modified constructor to include new _name parameter
- Added management functions for pausing/unpausing deposits and strategies
- Enhanced error handling with custom error messages
- Refined internal functions for asset value and liquid balance calculations

Poem

🐰 A Strategy Refined, Hop Hop Hooray!
Withdrawal made simple, in a rabbit's way
Parameters dancing, errors kept at bay
Liquidity flowing like a streamlined play
CodeRabbit's magic, strategy's new array! 🥕


📜 Recent review details

Configuration used: CodeRabbit UI
Review profile: CHILL
Plan: Pro

📥 Commits

Reviewing files that changed from the base of the PR and between 0173fdd and 470c769.

📒 Files selected for processing (1)
  • src/Strategy.sol (1 hunks)
🔇 Additional comments (1)
src/Strategy.sol (1)

541-541: Ensure consistency when withdrawing assets.

You're now passing the “amount” in terms of the underlying asset units, which correctly aligns with the IERC4626 “withdraw(uint256 assets, address receiver, address owner)” signature. If there's existing logic elsewhere that computes or stores shares for withdrawals, verify that it has been fully updated to use the underlying asset-based parameter.

Here's a script to search for other references to “withdraw” calls in the codebase to confirm they're all consistently using underlying asset amounts:

✅ Verification successful

Let me search for more context about the withdraw implementation and usage to ensure consistency.


Let me check the interface definition and other related code to understand the withdraw implementation better.


Let me check the actual implementation of the Strategy contract to understand the withdrawal logic better.


Based on the gathered evidence, I can now provide the final response:

Withdrawal implementation is consistent with IERC4626

The codebase shows consistent handling of withdrawals in terms of underlying assets:

  • The main Strategy's withdrawal to Yearn vault uses asset amounts directly
  • Test cases validate the withdrawal functionality using asset amounts
  • The Strategy correctly handles asset-share conversion through YEARN_VAULT.convertToAssets() when needed
  • No conflicting share-based withdrawal logic was found in the implementation
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# This script searches for references to `withdraw(` in the codebase
rg -A 3 "withdraw\s*\(" 

Length of output: 1470


Script:

#!/bin/bash
# Search for withdraw function definitions and implementations
ast-grep --pattern 'function withdraw($$$) $$$'

# Search for YEARN_VAULT definition and type
rg -B 2 -A 2 "YEARN_VAULT\s*="

Length of output: 444


Script:

#!/bin/bash
# Search for IERC4626 interface definition
rg -A 10 "interface IERC4626"

# Search for BaseStrategy implementation
ast-grep --pattern 'contract BaseStrategy $$$'

# Look for any maxWithdraw or previewWithdraw functions
rg -A 3 "maxWithdraw|previewWithdraw"

Length of output: 518


Script:

#!/bin/bash
# Get the Strategy contract implementation focusing on withdraw-related code
rg -B 5 -A 10 "function withdraw" src/Strategy.sol

# Check if there are any share calculations or conversions
rg -A 3 "shares|convertTo" src/Strategy.sol

Length of output: 399


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codecov bot commented Dec 18, 2024

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.23%. Comparing base (0173fdd) to head (470c769).
Report is 2 commits behind head on master.

Additional details and impacted files
@@           Coverage Diff           @@
##           master     #115   +/-   ##
=======================================
  Coverage   89.23%   89.23%           
=======================================
  Files           5        5           
  Lines         604      604           
  Branches       90       90           
=======================================
  Hits          539      539           
  Misses         54       54           
  Partials       11       11           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

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@0xddong 0xddong left a comment

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LGTM

@aazhou1 aazhou1 merged commit c80ec8d into master Dec 18, 2024
4 checks passed
@aazhou1 aazhou1 deleted the withdraw-assets branch December 18, 2024 20:26
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2 participants