feat: implement GetParams for precompiles

CHANGELOG.md

@@ -2,6 +2,10 @@
 
 ## UNRELEASED
 
+### STATE BREAKING
+
+- [\#277](https://github.com/cosmos/evm/pull/277) Add GetParams methods to staking and distribution precompile.
+
 ### DEPENDENCIES
 
 ### BUG FIXES

contracts/solidity/precompiles/distribution/DistributionI.sol

@@ -16,21 +16,27 @@ DistributionI constant DISTRIBUTION_CONTRACT = DistributionI(
     DISTRIBUTION_PRECOMPILE_ADDRESS
 );
 
-struct ValidatorSlashEvent {
-    uint64 validatorPeriod;
-    Dec fraction;
-}
-
-struct ValidatorDistributionInfo {
-    string operatorAddress;
-    DecCoin[] selfBondRewards;
-    DecCoin[] commission;
-}
-
-struct DelegationDelegatorReward {
-    string validatorAddress;
-    DecCoin[] reward;
-}
+    struct ValidatorSlashEvent {
+        uint64 validatorPeriod;
+        Dec fraction;
+    }
+
+    struct ValidatorDistributionInfo {
+        string operatorAddress;
+        DecCoin[] selfBondRewards;
+        DecCoin[] commission;
+    }
+
+    struct DelegationDelegatorReward {
+        string validatorAddress;
+        DecCoin[] reward;
+    }
+
+/// @dev Distribution module parameters
+    struct DistributionParams {
+        Dec communityTax;
+        bool withdrawAddrEnabled;
+    }
 
 /// @author Evmos Team
 /// @title Distribution Precompile Contract
@@ -154,9 +160,9 @@ interface DistributionI {
     function validatorDistributionInfo(
         string memory validatorAddress
     )
-        external
-        view
-        returns (ValidatorDistributionInfo calldata distributionInfo);
+    external
+    view
+    returns (ValidatorDistributionInfo calldata distributionInfo);
 
     /// @dev Queries the outstanding rewards of a validator address.
     /// @param validatorAddress The address of the validator
@@ -186,12 +192,12 @@ interface DistributionI {
         uint64 endingHeight,
         PageRequest calldata pageRequest
     )
-        external
-        view
-        returns (
-            ValidatorSlashEvent[] calldata slashes,
-            PageResponse calldata pageResponse
-        );
+    external
+    view
+    returns (
+        ValidatorSlashEvent[] calldata slashes,
+        PageResponse calldata pageResponse
+    );
 
     /// @dev Queries the total rewards accrued by a delegation from a specific address to a given validator.
     /// @param delegatorAddress The address of the delegator
@@ -210,12 +216,12 @@ interface DistributionI {
     function delegationTotalRewards(
         address delegatorAddress
     )
-        external
-        view
-        returns (
-            DelegationDelegatorReward[] calldata rewards,
-            DecCoin[] calldata total
-        );
+    external
+    view
+    returns (
+        DelegationDelegatorReward[] calldata rewards,
+        DecCoin[] calldata total
+    );
 
     /// @dev Queries all validators, that a given address has delegated to.
     /// @param delegatorAddress The address of the delegator
@@ -234,4 +240,11 @@ interface DistributionI {
     /// @dev Queries the coins in the community pool.
     /// @return coins The coins in the community pool
     function communityPool() external view returns (DecCoin[] calldata coins);
+
+    /// @dev Queries the distribution module parameters.
+    /// @return params The distribution module parameters
+    function getParams()
+    external
+    view
+    returns (DistributionParams memory params);
 }

contracts/solidity/precompiles/staking/StakingI.sol

@@ -25,103 +25,113 @@ int256 constant DO_NOT_MODIFY_MIN_SELF_DELEGATION = -1;
 
 /// @dev Defines the initial description to be used for creating
 /// a validator.
-struct Description {
-    string moniker;
-    string identity;
-    string website;
-    string securityContact;
-    string details;
-}
+    struct Description {
+        string moniker;
+        string identity;
+        string website;
+        string securityContact;
+        string details;
+    }
 
 /// @dev Defines the initial commission rates to be used for creating
 /// a validator.
-struct CommissionRates {
-    uint256 rate;
-    uint256 maxRate;
-    uint256 maxChangeRate;
-}
+    struct CommissionRates {
+        uint256 rate;
+        uint256 maxRate;
+        uint256 maxChangeRate;
+    }
 
 /// @dev Defines commission parameters for a given validator.
-struct Commission {
-    CommissionRates commissionRates;
-    uint256 updateTime;
-}
+    struct Commission {
+        CommissionRates commissionRates;
+        uint256 updateTime;
+    }
 
 /// @dev Represents a validator in the staking module.
-struct Validator {
-    string operatorAddress;
-    string consensusPubkey;
-    bool jailed;
-    BondStatus status;
-    uint256 tokens;
-    uint256 delegatorShares; // TODO: decimal
-    string description;
-    int64 unbondingHeight;
-    int64 unbondingTime;
-    uint256 commission;
-    uint256 minSelfDelegation;
-}
+    struct Validator {
+        string operatorAddress;
+        string consensusPubkey;
+        bool jailed;
+        BondStatus status;
+        uint256 tokens;
+        uint256 delegatorShares; // TODO: decimal
+        string description;
+        int64 unbondingHeight;
+        int64 unbondingTime;
+        uint256 commission;
+        uint256 minSelfDelegation;
+    }
 
 /// @dev Represents the output of a Redelegations query.
-struct RedelegationResponse {
-    Redelegation redelegation;
-    RedelegationEntryResponse[] entries;
-}
+    struct RedelegationResponse {
+        Redelegation redelegation;
+        RedelegationEntryResponse[] entries;
+    }
 
 /// @dev Represents a redelegation between a delegator and a validator.
-struct Redelegation {
-    string delegatorAddress;
-    string validatorSrcAddress;
-    string validatorDstAddress;
-    RedelegationEntry[] entries;
-}
+    struct Redelegation {
+        string delegatorAddress;
+        string validatorSrcAddress;
+        string validatorDstAddress;
+        RedelegationEntry[] entries;
+    }
 
 /// @dev Represents a RedelegationEntryResponse for the Redelegations query.
-struct RedelegationEntryResponse {
-    RedelegationEntry redelegationEntry;
-    uint256 balance;
-}
+    struct RedelegationEntryResponse {
+        RedelegationEntry redelegationEntry;
+        uint256 balance;
+    }
 
 /// @dev Represents a single Redelegation entry.
-struct RedelegationEntry {
-    int64 creationHeight;
-    int64 completionTime;
-    uint256 initialBalance;
-    uint256 sharesDst; // TODO: decimal
-}
+    struct RedelegationEntry {
+        int64 creationHeight;
+        int64 completionTime;
+        uint256 initialBalance;
+        uint256 sharesDst; // TODO: decimal
+    }
 
 /// @dev Represents the output of the Redelegation query.
-struct RedelegationOutput {
-    string delegatorAddress;
-    string validatorSrcAddress;
-    string validatorDstAddress;
-    RedelegationEntry[] entries;
-}
+    struct RedelegationOutput {
+        string delegatorAddress;
+        string validatorSrcAddress;
+        string validatorDstAddress;
+        RedelegationEntry[] entries;
+    }
 
 /// @dev Represents a single entry of an unbonding delegation.
-struct UnbondingDelegationEntry {
-    int64 creationHeight;
-    int64 completionTime;
-    uint256 initialBalance;
-    uint256 balance;
-    uint64 unbondingId;
-    int64 unbondingOnHoldRefCount;
-}
+    struct UnbondingDelegationEntry {
+        int64 creationHeight;
+        int64 completionTime;
+        uint256 initialBalance;
+        uint256 balance;
+        uint64 unbondingId;
+        int64 unbondingOnHoldRefCount;
+    }
 
 /// @dev Represents the output of the UnbondingDelegation query.
-struct UnbondingDelegationOutput {
-    string delegatorAddress;
-    string validatorAddress;
-    UnbondingDelegationEntry[] entries;
-}
+    struct UnbondingDelegationOutput {
+        string delegatorAddress;
+        string validatorAddress;
+        UnbondingDelegationEntry[] entries;
+    }
 
 /// @dev The status of the validator.
-enum BondStatus {
-    Unspecified,
-    Unbonded,
-    Unbonding,
-    Bonded
-}
+    enum BondStatus {
+        Unspecified,
+        Unbonded,
+        Unbonding,
+        Bonded
+    }
+
+/// @dev Staking module parameters
+    struct StakingParams {
+        uint64 unbondingTime;
+        uint32 maxValidators;
+        uint32 maxEntries;
+        uint32 historicalEntries;
+        string bondDenom;
+        Dec minCommissionRate;
+    }
 
 /// @author Evmos Team
 /// @title Staking Precompiled Contract
@@ -236,9 +246,9 @@ interface StakingI {
         address delegatorAddress,
         string memory validatorAddress
     )
-        external
-        view
-        returns (UnbondingDelegationOutput calldata unbondingDelegation);
+    external
+    view
+    returns (UnbondingDelegationOutput calldata unbondingDelegation);
 
     /// @dev Queries validator info for a given validator address.
     /// @param validatorAddress The address of the validator.
@@ -254,12 +264,12 @@ interface StakingI {
         string memory status,
         PageRequest calldata pageRequest
     )
-        external
-        view
-        returns (
-            Validator[] calldata validators,
-            PageResponse calldata pageResponse
-        );
+    external
+    view
+    returns (
+        Validator[] calldata validators,
+        PageResponse calldata pageResponse
+    );
 
     /// @dev Queries all redelegations from a source to a destination validator for a given delegator.
     /// @param delegatorAddress The address of the delegator.
@@ -288,12 +298,19 @@ interface StakingI {
         string memory dstValidatorAddress,
         PageRequest calldata pageRequest
     )
-        external
-        view
-        returns (
-            RedelegationResponse[] calldata response,
-            PageResponse calldata pageResponse
-        );
+    external
+    view
+    returns (
+        RedelegationResponse[] calldata response,
+        PageResponse calldata pageResponse
+    );
+
+    /// @dev Queries the staking module parameters.
+    /// @return params The staking module parameters
+    function getParams()
+    external
+    view
+    returns (StakingParams memory params);
 
     /// @dev CreateValidator defines an Event emitted when a create a new validator.
     /// @param validatorAddress The address of the validator