cosmos-sdk/x/gov/types/expected_keepers.go

package types

import (
	sdk "github.com/cosmos/cosmos-sdk/types"
	authexported "github.com/cosmos/cosmos-sdk/x/auth/exported"
	stakingexported "github.com/cosmos/cosmos-sdk/x/staking/exported"
	supplyexported "github.com/cosmos/cosmos-sdk/x/supply/exported"
)

// ParamSubspace defines the expected Subspace interface for parameters (noalias)
type ParamSubspace interface {
	Get(ctx sdk.Context, key []byte, ptr interface{})
	Set(ctx sdk.Context, key []byte, param interface{})
}

// SupplyKeeper defines the expected supply keeper for module accounts (noalias)
type SupplyKeeper interface {
	GetModuleAddress(name string) sdk.AccAddress
	GetModuleAccount(ctx sdk.Context, name string) supplyexported.ModuleAccountI

	// TODO remove with genesis 2-phases refactor https://github.com/cosmos/cosmos-sdk/issues/2862
	SetModuleAccount(sdk.Context, supplyexported.ModuleAccountI)

	SendCoinsFromModuleToAccount(ctx sdk.Context, senderModule string, recipientAddr sdk.AccAddress, amt sdk.Coins) sdk.Error
	SendCoinsFromAccountToModule(ctx sdk.Context, senderAddr sdk.AccAddress, recipientModule string, amt sdk.Coins) sdk.Error
	BurnCoins(ctx sdk.Context, name string, amt sdk.Coins) sdk.Error
}

// StakingKeeper expected staking keeper (Validator and Delegator sets) (noalias)
type StakingKeeper interface {
	// iterate through bonded validators by operator address, execute func for each validator
	IterateBondedValidatorsByPower(sdk.Context,
		func(index int64, validator stakingexported.ValidatorI) (stop bool))

	TotalBondedTokens(sdk.Context) sdk.Int // total bonded tokens within the validator set

	IterateDelegations(ctx sdk.Context, delegator sdk.AccAddress,
		fn func(index int64, delegation stakingexported.DelegationI) (stop bool))
}

// AccountKeeper defines the expected account keeper (noalias)
type AccountKeeper interface {
	GetAccount(ctx sdk.Context, addr sdk.AccAddress) authexported.Account
}