std

type Api interface {
	CanonicalAddress(human types.HumanAddress) (types.CanonicalAddress, error)
	HumanAddress(canonical types.CanonicalAddress) (types.HumanAddress, error)
	ValidateAddress(human types.HumanAddress) error
	Debug(msg string)
}

type Deps struct {
	// Storage provides access to the data persistence layer at write and read level.
	Storage Storage
	// Api provides access to common utilities such as address
	// parsing and verification.
	Api Api
	// Querier is used to query information from other contracts.
	Querier Querier
}

type Iterator interface {
	Next() (key, value []byte, err error)
}

type JSONType interface {
	MarshalJSON() ([]byte, error)
	UnmarshalJSON([]byte) error
}

type MemRegion struct {
	Offset   uint32
	Capacity uint32
	Length   uint32
}

type Order uint32

type Querier interface {
	RawQuery(request []byte) ([]byte, error)
}

type QuerierWrapper struct {
	Querier
}

type ReadonlyStorage interface {
	// Get gets the value of the provided key. If value is nil then the key does not exist.
	Get(key []byte) (value []byte)
	// Range ranges from start to end byte prefixes with the provided Order flag.
	Range(start, end []byte, order Order) (iterator Iterator)
}

type SliceHeader_Go struct {
	Data uintptr
	Len  int
	Cap  int
}

type SliceHeader_tinyGo struct {
	Data uintptr
	Len  uintptr
	Cap  uintptr
}

type Storage interface {
	ReadonlyStorage

	// Set sets the key and value.
	Set(key, value []byte)
	// Remove removes the value from the db.
	Remove(key []byte)
}