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refactor: privatize precompiled cross-chain contract addresses and ABI #782

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merged 1 commit into from
Oct 25, 2024

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@zakir-code zakir-code commented Oct 24, 2024

Summary by CodeRabbit

  • New Features

    • Introduced a method for executing cross-chain transactions within the test suite.
    • Added a new field for managing the cross-chain address.
  • Bug Fixes

    • Updated event emission and address handling for improved accuracy in transaction processes.
  • Refactor

    • Streamlined ABI management and method references for better code organization.
    • Removed deprecated methods and variables to enhance clarity and maintainability.
  • Tests

    • Updated test cases to utilize the new cross-chain address management, ensuring accurate testing of functionalities.

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coderabbitai bot commented Oct 24, 2024

Walkthrough

The changes in this pull request involve significant modifications across various files related to cross-chain functionality in a blockchain context. Key updates include the removal of certain imports, restructuring of method signatures, and the introduction of new fields and methods to enhance the CrosschainTestSuite. Additionally, the handling of ABI references and event emissions has been updated in the precompile package, while some test suites have been adjusted to align with these changes. The overall focus is on improving the integration and functionality of cross-chain operations.

Changes

File Path Change Summary
tests/crosschain_suite.go - Removed gethcommon import; replaced with common from Ethereum.
- Added field crosschainAddr common.Address.
- Updated method signatures for HexAddress and FormatAddress to use common.Address.
- Introduced new method Crosschain for executing cross-chain transactions.
tests/precompile_suite.go - Removed file containing PrecompileTestSuite with methods for handling precompile functionality.
x/crosschain/precompile/bridge_call.go - Updated initialization of Method and Event fields to use crosschainABI directly.
- Changed event emission method to fxcontract.EmitEvent.
x/crosschain/precompile/bridge_coin_amount.go - Updated Method initialization to use crosschainABI.Methods["bridgeCoinAmount"].
x/crosschain/precompile/contract.go - Removed imports of ethtypes and crosschaintypes.
- Added crosschainABI and crosschainAddress variables.
- Removed EmitEvent function.
x/crosschain/precompile/contract_test.go - Renamed member variable from crosschain to crosschainAddr in PrecompileTestSuite.
x/crosschain/precompile/crosschain.go - Updated Method and Event initialization to use crosschainABI.
- Changed SendCoins method call to use crosschainAddress.
x/crosschain/precompile/execute_claim.go - Renamed imported contract package to fxcontract.
- Updated ABI method and event references to crosschainABI.
x/crosschain/precompile/has_oracle.go - Updated Method initialization to use crosschainABI.Methods["hasOracle"].
x/crosschain/precompile/has_oracle_test.go - Replaced contractAddr with suite.crosschainAddr in EVM call.
x/crosschain/precompile/is_oracle_online.go - Updated Method initialization to use crosschainABI.Methods["isOracleOnline"].
x/crosschain/precompile/is_oracle_online_test.go - Replaced contractAddr with suite.crosschainAddr in EVM call.
x/crosschain/types/contract.go - Removed crosschainAddress and crosschainABI variables and their associated getter functions.

Possibly related PRs

🐰 In the fields where I hop and play,
Changes bloom like flowers in May.
Crosschain paths now clearer and bright,
With new methods to take flight!
Oh, the joy of code, so fine and neat,
A rabbit's cheer for progress, oh so sweet! 🌼✨


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Actionable comments posted: 1

🧹 Outside diff range and nitpick comments (2)
x/crosschain/precompile/is_oracle_online_test.go (1)

Line range hint 19-91: Consider adding a test case for zero address validation.

The test suite covers various scenarios but doesn't validate behavior with a zero address input.

Add this test case to the testCases slice:

 testCases := []struct {
   name     string
   malleate func() (crosschaintypes.IsOracleOnlineArgs, error)
   result   bool
 }{
+  {
+    name: "zero address oracle",
+    malleate: func() (crosschaintypes.IsOracleOnlineArgs, error) {
+      return crosschaintypes.IsOracleOnlineArgs{
+        Chain:           ethtypes.ModuleName,
+        ExternalAddress: "0x0000000000000000000000000000000000000000",
+      }, nil
+    },
+    result: false,
+  },
   // ... existing test cases
 }
tests/crosschain_suite.go (1)

567-588: Consider enhancing input validation and error handling.

While the implementation is thorough, consider these improvements:

  1. Add validation for input parameters (amount, fee should be non-negative)
  2. The error message in line 583 includes target which seems unrelated to the error context
  3. The balance comparison could be more explicit with a descriptive error message

Consider this improvement:

 func (suite *CrosschainTestSuite) Crosschain(token common.Address, recipient string, amount, fee *big.Int, target string) *ethtypes.Transaction {
+	if amount.Sign() < 0 || fee.Sign() < 0 {
+		suite.Require().FailNow("amount and fee must be non-negative")
+	}
 	privateKey := suite.privKey
 	crosschainContract := suite.crosschainAddr
 	suite.ApproveERC20(privateKey, token, crosschainContract, big.NewInt(0).Add(amount, fee))

 	beforeBalanceOf := suite.BalanceOf(token, common.BytesToAddress(privateKey.PubKey().Address().Bytes()))
 	pack, err := precompile.NewCrosschainMethod(nil).PackInput(crosschaintypes.CrosschainArgs{
 		Token:   token,
 		Receipt: recipient,
 		Amount:  amount,
 		Fee:     fee,
 		Target:  fxtypes.MustStrToByte32(target),
 		Memo:    "",
 	})
 	suite.Require().NoError(err)
 	ethTx, err := client.BuildEthTransaction(suite.ctx, suite.EthClient(), privateKey, &crosschainContract, nil, pack)
-	suite.Require().NoError(err, target)
+	suite.Require().NoError(err, "failed to build transaction")
 	suite.SendTransaction(ethTx)
 	afterBalanceOf := suite.BalanceOf(token, common.BytesToAddress(privateKey.PubKey().Address().Bytes()))
-	suite.Require().True(new(big.Int).Sub(beforeBalanceOf, afterBalanceOf).Cmp(new(big.Int).Add(amount, fee)) == 0)
+	expectedDiff := new(big.Int).Add(amount, fee)
+	actualDiff := new(big.Int).Sub(beforeBalanceOf, afterBalanceOf)
+	suite.Require().Zero(actualDiff.Cmp(expectedDiff), "balance difference should equal amount + fee")
 	return ethTx
 }
📜 Review details

Configuration used: CodeRabbit UI
Review profile: CHILL

📥 Commits

Files that changed from the base of the PR and between bfb4a1a and 8d923ca.

📒 Files selected for processing (13)
  • tests/crosschain_suite.go (7 hunks)
  • tests/precompile_suite.go (0 hunks)
  • x/crosschain/precompile/bridge_call.go (4 hunks)
  • x/crosschain/precompile/bridge_coin_amount.go (1 hunks)
  • x/crosschain/precompile/contract.go (2 hunks)
  • x/crosschain/precompile/contract_test.go (2 hunks)
  • x/crosschain/precompile/crosschain.go (3 hunks)
  • x/crosschain/precompile/execute_claim.go (3 hunks)
  • x/crosschain/precompile/has_oracle.go (1 hunks)
  • x/crosschain/precompile/has_oracle_test.go (1 hunks)
  • x/crosschain/precompile/is_oracle_online.go (1 hunks)
  • x/crosschain/precompile/is_oracle_online_test.go (1 hunks)
  • x/crosschain/types/contract.go (0 hunks)
💤 Files with no reviewable changes (2)
  • tests/precompile_suite.go
  • x/crosschain/types/contract.go
🔇 Additional comments (24)
x/crosschain/precompile/has_oracle.go (2)

Line range hint 1-90: Implementation looks solid!

The overall implementation demonstrates good practices:

  • Clear error handling and input validation
  • Type-safe operations
  • Consistent method signatures
  • Reasonable fixed gas cost
  • Good separation of concerns with Pack/Unpack methods

21-21: Verify crosschainABI initialization and thread safety.

The change from crosschaintypes.GetABI() to crosschainABI aligns with the PR objective of privatizing ABI. However, we should ensure:

  1. The crosschainABI package variable is properly initialized before use
  2. There are no concurrent modification concerns if the ABI needs to be updated at runtime
✅ Verification successful

Let me try a different search strategy to locate the ABI initialization.


Let's check the content of crosschain.go since it's likely the main package file that might contain the ABI initialization.


Let's try one more search to find the ABI initialization, focusing on the entire precompile package and looking for JSON ABI definitions.


Now I have enough information to provide the final response.

The crosschainABI initialization is properly handled and thread-safe

The crosschainABI is safely initialized as a package-level variable using contract.MustABIJson(contract.ICrosschainMetaData.ABI) in the contract.go file. This initialization:

  • Happens at package load time
  • Uses a constant ABI definition from the contract package
  • Is immutable after initialization (no runtime modifications found)

There are no concurrent modification concerns as the ABI is effectively constant after initialization.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify crosschainABI initialization and usage
# Expected: Find where crosschainABI is defined and initialized

# Test 1: Find crosschainABI definition
echo "=== Searching for crosschainABI definition ==="
rg -A 5 "var crosschainABI"

# Test 2: Find any dynamic modifications to crosschainABI
echo "=== Searching for modifications to crosschainABI ==="
ast-grep --pattern 'crosschainABI = $_'

Length of output: 289


Script:

#!/bin/bash
# Description: Search for ABI initialization patterns in the precompile package

# Test 1: Look for ABI-related code in the package
echo "=== Searching for ABI initialization patterns ==="
rg -l "abi\." x/crosschain/precompile/

# Test 2: Check the content of any init.go files in the package
echo "=== Checking init.go files ==="
fd "init.go" x/crosschain/precompile/

# Test 3: Look for package initialization patterns
echo "=== Searching for init functions or package variables ==="
rg "func init|var.*abi\.ABI" x/crosschain/precompile/

# Test 4: Search for abi.JSON usage which is common for ABI initialization
echo "=== Searching for abi.JSON initialization ==="
rg "abi\.JSON" x/crosschain/precompile/

Length of output: 828


Script:

#!/bin/bash
# Description: Examine crosschain.go for ABI initialization

# Test 1: Look at the content of crosschain.go focusing on ABI-related code
echo "=== Examining crosschain.go for ABI initialization ==="
rg -A 10 "crosschainABI|var.*abi" x/crosschain/precompile/crosschain.go

# Test 2: Look for any initialization in the package init
echo "=== Looking for initialization patterns in crosschain.go ==="
rg -A 10 "func init|package precompile" x/crosschain/precompile/crosschain.go

# Test 3: Look for const declarations that might contain ABI definition
echo "=== Looking for const declarations ==="
rg -A 10 "const.*=.*\`" x/crosschain/precompile/crosschain.go

Length of output: 1044


Script:

#!/bin/bash
# Description: Search for ABI JSON definition and initialization

# Test 1: Look for JSON ABI definition in any go file
echo "=== Searching for ABI JSON definition ==="
rg -A 5 '`{.*"name".*"type".*"inputs"' x/crosschain/precompile/

# Test 2: Look for crosschainABI initialization in any file
echo "=== Searching for crosschainABI initialization ==="
rg -B 5 -A 10 "crosschainABI.*=" x/crosschain/precompile/

# Test 3: Look for any file that might contain the ABI definition
echo "=== Searching for files containing ABI-related code ==="
rg -l "abi\.JSON\(.*strings\.NewReader" x/crosschain/precompile/

Length of output: 1602

x/crosschain/precompile/contract.go (3)

Line range hint 1-11: LGTM! Clean import list.

The removal of external dependencies (ethtypes and crosschaintypes) aligns well with the goal of privatizing contract addresses and ABI.


47-49: Verify consistent address usage across the codebase.

The change to use a pre-computed address is good for performance and maintainability. However, we should ensure this address is used consistently across the codebase.

Let's verify the address usage:

✅ Verification successful

Based on the results, I can generate the final response as we have sufficient information about the address usage across the codebase.

Address usage is consistent across the codebase ✅

The verification shows that the CrosschainAddress constant is consistently used throughout the codebase:

  • Defined as a constant in contract/contract.go
  • Used in test suites and contract initialization
  • All instances properly convert the hex string to common.Address using HexToAddress

No instances of hardcoded addresses or alternative address computations were found that should be using this constant instead.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check for consistent address usage
# Test 1: Search for direct CrosschainAddress usage
rg "CrosschainAddress" 

# Test 2: Search for potential address computations that should use the constant
ast-grep --pattern 'common.HexToAddress($$$)'

Length of output: 473


14-17: 🛠️ Refactor suggestion

Consider safer ABI initialization.

While moving these configurations to package-level variables is good for performance, using MustABIJson could cause a panic at runtime if the ABI is invalid. Consider initializing these in an init() function with proper error handling.

Here's a safer approach:

var (
-	crosschainABI     = contract.MustABIJson(contract.ICrosschainMetaData.ABI)
+	crosschainABI     abi.ABI
	crosschainAddress = common.HexToAddress(contract.CrosschainAddress)
)

+func init() {
+	var err error
+	crosschainABI, err = abi.JSON(strings.NewReader(contract.ICrosschainMetaData.ABI))
+	if err != nil {
+		panic(fmt.Sprintf("failed to parse crosschain ABI: %v", err))
+	}
+}

Let's verify the ABI usage in the codebase:

x/crosschain/precompile/is_oracle_online.go (1)

21-21: Verify the initialization of crosschainABI

The change from crosschaintypes.GetABI() to crosschainABI looks good, but we should verify that crosschainABI is properly initialized and accessible.

Let's verify the declaration and initialization of crosschainABI:

✅ Verification successful

Based on the results, I can now generate the final response since I have found clear evidence of the crosschainABI declaration and its consistent usage across the codebase.

crosschainABI is properly initialized and consistently used

The variable crosschainABI is correctly declared and initialized in x/crosschain/precompile/contract.go:

crosschainABI = contract.MustABIJson(contract.ICrosschainMetaData.ABI)

It's consistently used across multiple precompile files for both methods and events:

  • bridge_call.go
  • bridge_coin_amount.go
  • crosschain.go
  • execute_claim.go
  • has_oracle.go
  • is_oracle_online.go
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Check the declaration and initialization of crosschainABI
# Expected: Find where crosschainABI is declared and initialized

# Look for crosschainABI declaration
echo "Searching for crosschainABI declaration..."
rg -p "var\s+crosschainABI\s*=" x/crosschain/

# Look for any references to ensure consistent usage
echo "Checking for consistent usage across files..."
rg "crosschainABI" x/crosschain/

Length of output: 1195

x/crosschain/precompile/bridge_coin_amount.go (1)

24-24: LGTM! Verify crosschainABI initialization.

The change aligns with the PR objective of privatizing contract addresses and ABI. The transition from crosschaintypes.GetABI() to crosschainABI maintains consistency with other precompile methods.

Let's verify the initialization and usage of crosschainABI across the codebase:

x/crosschain/precompile/has_oracle_test.go (1)

71-71: LGTM! Verify suite.crosschainAddr initialization.

The change to use suite.crosschainAddr aligns with the PR objective to privatize precompiled cross-chain contract addresses.

Let's verify the proper initialization of suite.crosschainAddr:

✅ Verification successful

Let me gather more context about the initialization by checking the test suite setup and the contract package:


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

suite.crosschainAddr is properly initialized

The crosschainAddr field is:

  • Correctly defined in the PrecompileTestSuite struct
  • Properly initialized in the suite setup using common.HexToAddress(contract.CrosschainAddress)
  • Using the constant address 0x0000000000000000000000000000000000001004 from the contract package
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify the initialization of crosschainAddr in the test suite
# Expected: Find the initialization in the suite setup

# Search for crosschainAddr initialization in test files
rg -A 5 'crosschainAddr.*=.*' --type go

Length of output: 1908


Script:

#!/bin/bash
# Check the contract package for CrosschainAddress definition
rg -A 2 'CrosschainAddress.*=' --type go

# Check the test suite structure and setup
ast-grep --pattern 'type PrecompileTestSuite struct {
  $$$
  crosschainAddr $_
  $$$
}'

Length of output: 643

x/crosschain/precompile/is_oracle_online_test.go (1)

83-83: LGTM! Verify suite.crosschainAddr initialization.

The change aligns with the PR objective of privatizing precompiled contract addresses.

Let's verify the contract address initialization:

✅ Verification successful

Let me gather more information about the initialization of crosschainAddr in the test suite.


Let me check one more thing to understand where the CrosschainAddress constant is defined.


Contract address initialization verified successfully

The verification confirms that:

  1. suite.crosschainAddr is properly initialized in contract_test.go using common.HexToAddress(contract.CrosschainAddress)
  2. CrosschainAddress is a well-defined constant in contract/contract.go with value 0x0000000000000000000000000000000000001004
  3. The address is consistently used across the codebase for crosschain precompile operations

The change from contractAddr to suite.crosschainAddr is safe as it uses the standardized precompile address from the contract package.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify crosschainAddr initialization in the test suite
# Expected: Find the initialization of crosschainAddr in the suite setup

# Search for crosschainAddr initialization
rg -l 'crosschainAddr.*=.*' --type go

# Search for the CrosschainTestSuite structure
ast-grep --pattern 'type CrosschainTestSuite struct {
  $$$
  crosschainAddr $_
  $$$
}'

Length of output: 989


Script:

#!/bin/bash
# Search for the initialization of crosschainAddr in the test suite setup
rg -A 10 'func \(suite \*CrosschainTestSuite\) SetupTest\(\)' --type go

# Search for contract address deployment or initialization
rg -A 5 'crosschainAddr.*=' --type go

Length of output: 1980


Script:

#!/bin/bash
# Search for CrosschainAddress constant definition
rg -A 2 'CrosschainAddress.*=.*' --type go

# Also check the contract package for any relevant constants
rg -l 'package contract' --type go

Length of output: 753

x/crosschain/precompile/execute_claim.go (3)

12-12: LGTM: Package renaming is consistent with privatization objective.

The renaming of the contract package to fxcontract and corresponding type assertion update maintains interface compliance while better reflecting the package's ownership.

Also applies to: 17-17


28-29: Verify crosschainABI initialization.

The change from crosschaintypes.GetABI() to crosschainABI looks good, but we should verify that crosschainABI is properly initialized before use.

✅ Verification successful

Let's try a different search strategy to locate the ABI initialization.

The previous search might have been too specific. This broader search should help us find:

  1. How crosschainABI is used in the context file
  2. Any ABI initialization patterns in the precompile package

Let's try one more search to find the ABI initialization, focusing on the package-level variables and init functions.


Let's try one final search focusing on the precompile package initialization and the crosschain ABI in the parent directory.


Based on the search results, I can now provide a final response since we found the initialization of crosschainABI:

crosschainABI is properly initialized as a package-level variable

The variable is initialized at package level in x/crosschain/precompile/contract.go:

var (
    crosschainABI = contract.MustABIJson(contract.ICrosschainMetaData.ABI)
    crosschainAddress = common.HexToAddress(contract.CrosschainAddress)
)

The initialization:

  • Uses contract.MustABIJson which ensures the ABI is valid at startup
  • Sources the ABI from contract.ICrosschainMetaData.ABI
  • Is done at package level, ensuring it's available before any method usage
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify crosschainABI initialization
# Expected: Find where crosschainABI is initialized in the package

# Search for crosschainABI declaration and initialization
rg -A 5 'var\s+crosschainABI\s*=' --type go

Length of output: 45


Script:

#!/bin/bash
# Search for crosschainABI in the file and surrounding context
rg -B 5 -A 5 'crosschainABI' x/crosschain/precompile/execute_claim.go

# Also search for any ABI initialization patterns in the package
rg -B 5 -A 5 '(abi\.JSON|abi\.MustUnpack)' x/crosschain/precompile

Length of output: 433


Script:

#!/bin/bash
# Search for init functions and package variables in the precompile directory
rg -B 5 -A 10 '(func init|var \w+)' x/crosschain/precompile/

# Also check for any JSON ABI definitions that might be used for initialization
fd -e json . x/crosschain/precompile/ --exec cat {}

Length of output: 3634


Script:

#!/bin/bash
# Search for ABI initialization in the precompile package and its parent
rg -B 5 -A 10 'crosschainABI|func init' x/crosschain/

# Look for any ABI-related files or constants in the types package
rg -B 5 -A 10 'ABI' x/crosschain/types/

Length of output: 23036


68-68: Verify crosschainAddress initialization and event emission consistency.

The updated event emission includes crosschainAddress as a new parameter. This is a breaking change that requires verification.

✅ Verification successful

Let me try a different approach to verify the initialization and usage patterns.

This should help us understand:

  1. How crosschainAddress is used and initialized
  2. The pattern of EmitEvent usage across the codebase
  3. The context of the function where this change is made

Based on the search results, I can now provide a final response:

The crosschainAddress parameter usage is consistent and properly initialized

The verification shows that:

  1. crosschainAddress is properly initialized in x/crosschain/precompile/contract.go using common.HexToAddress(contract.CrosschainAddress)
  2. The EmitEvent usage with crosschainAddress is consistent across the crosschain module:
    • execute_claim.go
    • bridge_call.go
    • crosschain.go
  3. The pattern matches other precompile contracts (like staking) which follow the same pattern using their respective addresses

The change is safe and follows the established pattern in the codebase.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Description: Verify crosschainAddress initialization and event emission consistency
# Expected: Find crosschainAddress initialization and verify consistent usage across codebase

# Search for crosschainAddress declaration
rg -A 5 'var\s+crosschainAddress\s*=' --type go

# Verify consistent usage of EmitEvent with crosschainAddress
ast-grep --pattern 'fxcontract.EmitEvent($evm, $addr, $data, $topic)'

Length of output: 121


Script:

#!/bin/bash
# Search for crosschainAddress usage and initialization patterns
rg -A 3 "crosschainAddress" --type go

# Search for all EmitEvent calls to verify consistency
rg -A 2 "EmitEvent\(" --type go

# Look for the function containing this code to understand context
ast-grep --pattern 'func $name($$$) {
  $$$
  fxcontract.EmitEvent($$$)
  $$$
}'

Length of output: 12461

x/crosschain/precompile/bridge_call.go (4)

13-14: LGTM: Import changes align with new functionality

The new imports support the refactored event emission through fxcontract and type handling via fxtypes.


65-65: LGTM: Consistent address handling

The change to use crosschainAddress directly aligns with the PR objective of privatizing contract addresses and maintains consistency across the codebase.


97-97: LGTM: Improved event emission

The updated event emission using fxcontract.EmitEvent provides better integration with the FunctionX framework and maintains explicit contract address handling.


28-29: Verify crosschainABI initialization

The direct access to crosschainABI could potentially cause runtime panics if not properly initialized. Please ensure that crosschainABI is initialized before this method is called.

✅ Verification successful

Let me try a different approach to find the initialization of crosschainABI.


Based on the search results, I can now generate the final response since I found the initialization of crosschainABI in x/crosschain/precompile/contract.go (lines 14-16):

Initialization of crosschainABI is properly handled

The crosschainABI is safely initialized as a package-level variable using contract.MustABIJson(contract.ICrosschainMetaData.ABI). This initialization happens at package load time, ensuring the variable is available before any method calls. The use of MustABIJson guarantees that the ABI will be properly initialized or the program will panic at startup, preventing any runtime nil pointer issues.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for crosschainABI initialization
ast-grep --pattern 'var crosschainABI = $_'

Length of output: 45


Script:

#!/bin/bash
# Search for crosschainABI initialization using ripgrep
rg -p "crosschainABI" x/crosschain/ -A 5 -B 5

Length of output: 2502


Script:

#!/bin/bash
# Search for any ABI initialization patterns in the crosschain module
ast-grep --pattern 'abi.JSON($$$)'

Length of output: 36


Script:

#!/bin/bash
# Look for the file content to understand the context better
cat x/crosschain/precompile/bridge_call.go

Length of output: 3939

x/crosschain/precompile/crosschain.go (2)

104-104: Verify consistent event emission pattern.

The change to use fxcontract.EmitEvent with crosschainAddress aligns with the standardization effort. Let's verify this pattern is consistently applied across all precompiles.

✅ Verification successful

Based on the results, I can now generate the final response since we have clear evidence of the event emission pattern usage across the codebase.

Event emission pattern is consistently implemented

The verification shows that fxcontract.EmitEvent with crosschainAddress is consistently used across all relevant precompile files:

  • x/crosschain/precompile/crosschain.go
  • x/crosschain/precompile/bridge_call.go
  • x/crosschain/precompile/execute_claim.go

Additionally, there are no remaining instances of the old EmitEvent(evm, data, topic) pattern, confirming the standardization is complete.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for all event emission patterns to ensure consistency
rg "EmitEvent.*crosschainAddress" --type go

# Check for any remaining direct EmitEvent calls that should be updated
rg "EmitEvent\(evm, data, topic\)" --type go

Length of output: 390


83-83: Verify token transfer direction and amounts.

The change from crosschaintypes.GetAddress() to crosschainAddress looks correct. However, given this is a critical path handling token transfers, please ensure:

  1. The direction of transfer (from crosschain address to sender) is intentional
  2. The amount validation logic is properly maintained
✅ Verification successful

Let me gather more context about the token transfer logic to verify the direction and amount validation.


Let me gather more context about the specific function containing this SendCoins call to understand the full flow.


From the context gathered, I can now generate the final response as I have enough information about the token transfer logic and direction.

The token transfer direction and amount validation are correct.

The SendCoins call is used in two scenarios, both handling native token transfers from crosschain module to sender:

  1. In crosschain.go: When handling native token transfers (isOriginToken), it validates:

    • Total amount (amount + fee) matches the value sent
    • Token address is zero address
    • Transfers from crosschain module back to sender
  2. In bridge_call.go: Similar validation for bridge calls:

    • Checks value.Sign() > 0
    • Creates baseCoin with proper denomination
    • Transfers from crosschain module back to sender

The direction (from crosschainAddress to sender) is intentional as it represents a refund flow where tokens are returned from the crosschain module to the original sender. Amount validation is properly maintained through value matching and coin creation.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for other instances of SendCoins to verify consistency in transfer direction
rg "SendCoins.*crosschainAddress" --type go -A 3

Length of output: 697


Script:

#!/bin/bash
# Search for the function containing this SendCoins call to understand the broader context
ast-grep --pattern 'func $_($$$) $_ {
  $$$
  SendCoins(ctx, crosschainAddress.Bytes(), sender.Bytes(), $_)
  $$$
}'

# Also search for any amount validation before the SendCoins
rg "baseCoin.*:=|NewCoin.*\(" --type go -B 3 -A 1

Length of output: 78311


Script:

#!/bin/bash
# Search for the function containing this SendCoins call
rg -B 10 -A 10 "SendCoins\(ctx, crosschainAddress\.Bytes\(\), sender\.Bytes\(\), sdk\.NewCoins\(baseCoin\)\)" --type go

Length of output: 3281

x/crosschain/precompile/contract_test.go (2)

44-44: LGTM: Clear and appropriate field addition.

The new crosschainAddr field with type common.Address is well-named and appropriate for storing the cross-chain contract address.


60-62: Verify test coverage with fixed contract address.

The switch from dynamically deployed test contracts to a fixed contract address (contract.CrosschainAddress) could affect test isolation. Ensure that:

  1. Tests don't have unintended side effects due to shared contract state
  2. All test scenarios are still covered without the ability to modify contract state through deployment

Let's check for any test dependencies on the old dynamic deployment approach:

✅ Verification successful

Let's gather more information about how these files use crosschainContract and crosschainAddrTest to better understand the implications of the change.


Based on the gathered information, I can now generate the final response:

The switch to fixed contract address is safe and consistent

The change from dynamic contract deployment to using a fixed contract address (0x0000000000000000000000000000000000001004) is safe because:

  • The commented-out code was only used for test contract deployment and wasn't referenced elsewhere in the tests
  • The crosschainAddr is consistently used across the codebase (in contract_test.go, crosschain_suite.go, and contract.go)
  • The test suite's functionality remains intact as it only interacts with the contract through its address, regardless of how that address was obtained
  • No test cases were dependent on modifying the contract state through redeployment
🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for tests that might depend on the old dynamic contract deployment
rg -l "crosschainContract" --type go

# Check for any remaining references to the old crosschainAddrTest
rg -l "crosschainAddrTest" --type go

Length of output: 181


Script:

#!/bin/bash
# Check the usage context of crosschainContract and crosschainAddrTest
echo "=== crosschainContract usage in contract_test.go ==="
rg "crosschainContract" x/crosschain/precompile/contract_test.go -B 2 -A 2

echo -e "\n=== crosschainContract usage in crosschain_suite.go ==="
rg "crosschainContract" tests/crosschain_suite.go -B 2 -A 2

echo -e "\n=== crosschainAddrTest usage ==="
rg "crosschainAddrTest" x/crosschain/precompile/contract_test.go -B 2 -A 2

# Check the contract.CrosschainAddress usage
echo -e "\n=== contract.CrosschainAddress usage ==="
rg "CrosschainAddress" --type go -B 2 -A 2

Length of output: 3349

tests/crosschain_suite.go (4)

15-15: LGTM! Import changes improve clarity.

The direct import of github.com/ethereum/go-ethereum/common instead of using an alias improves code readability.

Also applies to: 20-20


38-38: LGTM! Field addition aligns with PR objectives.

The addition of crosschainAddr field supports the privatization of precompiled cross-chain contract addresses.


54-54: LGTM! Constructor properly initializes the new field.

The initialization of crosschainAddr using contract.CrosschainAddress is consistent with the field addition.


87-88: LGTM! Method update maintains type consistency.

The update to return common.Address maintains consistency with the standardization of address types.

Comment on lines +30 to +31
Method: crosschainABI.Methods["crossChain"],
Event: crosschainABI.Events["CrossChain"],
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💡 Codebase verification

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

Migration from CrosschainMethod to BridgeCallMethod is in progress but incomplete

The codebase shows that:

  • BridgeCallMethod is fully implemented in bridge_call.go with all necessary methods and tests
  • Both methods are currently registered in contract.go
  • CrosschainMethod is properly marked as deprecated with a reference to BridgeCallMethod
  • However, there are still active usages in tests (crosschain_test.go and crosschain_suite.go) that need to be migrated
  • tests/crosschain_suite.go: Uses deprecated NewCrosschainMethod for packing input
  • x/crosschain/precompile/crosschain_test.go: Contains test cases using the deprecated method
🔗 Analysis chain

Verify migration plan for deprecated CrosschainMethod.

While the ABI reference changes look good, this struct is marked as deprecated in favor of BridgeCallMethod. Let's ensure there's a plan to migrate all existing usages.


Let me check the actual usage context of CrosschainMethod in these files to better understand the migration status.


Let me check if BridgeCallMethod is already implemented and being used as the replacement, to ensure there's a proper migration path.

🏁 Scripts executed

The following scripts were executed for the analysis:

Script:

#!/bin/bash
# Search for remaining usages of CrosschainMethod to ensure complete migration
rg -l "CrosschainMethod" --type go

Length of output: 177


Script:

#!/bin/bash
# Check the context of CrosschainMethod usage in each file
echo "=== crosschain.go ==="
rg "CrosschainMethod" x/crosschain/precompile/crosschain.go -B 2 -A 2

echo -e "\n=== crosschain_test.go ==="
rg "CrosschainMethod" x/crosschain/precompile/crosschain_test.go -B 2 -A 2

echo -e "\n=== contract.go ==="
rg "CrosschainMethod" x/crosschain/precompile/contract.go -B 2 -A 2

echo -e "\n=== crosschain_suite.go ==="
rg "CrosschainMethod" tests/crosschain_suite.go -B 2 -A 2

Length of output: 2572


Script:

#!/bin/bash
# Check BridgeCallMethod implementation and usage
echo "=== BridgeCallMethod Implementation ==="
rg "BridgeCallMethod" x/crosschain/precompile/crosschain.go -B 2 -A 2

echo -e "\n=== BridgeCallMethod Usage ==="
rg "BridgeCallMethod" -g '!*.md' --type go -B 2 -A 2

Length of output: 6809

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