mptrie

type BranchNode struct {
	Children             [][]byte `protobuf:"bytes,1,rep,name=children,proto3" json:"children,omitempty"`
	ValuePtr             []byte   `protobuf:"bytes,2,opt,name=valuePtr,proto3" json:"valuePtr,omitempty"`
	Deleted              bool     `protobuf:"varint,3,opt,name=deleted,proto3" json:"deleted,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

type EmptyNode struct {
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

type ExtensionNode struct {
	Key                  []byte   `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
	Child                []byte   `protobuf:"bytes,2,opt,name=child,proto3" json:"child,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}

type MPTrie struct {
	// contains filtered or unexported fields
}

type Store interface {
	// GetNode returns TrieNode associated with key/ptr. It may be temporal node
	// created by PutNode, node market to persist after PersistNode or after executing
	// CommitPersistChanges actually stored in backend storage node
	GetNode(nodePtr []byte) (TrieNode, error)
	// GetValue return value bytes associated with value ptr. Same logic as in GetNode applies.
	GetValue(valuePtr []byte) ([]byte, error)
	// PutNode store node data it temporal way - it my be accessed by GetNode, but will not stored in backend store.
	PutNode(nodePtr []byte, node TrieNode) error
	// PutValue do the same as PutNode, but for value
	PutValue(valuePtr, value []byte) error
	// PersistNode mark temporal node to be persisted to backend storage in next call to CommitPersistChanges
	PersistNode(nodePtr []byte) (bool, error)
	// PersistValue do same as PersistNode, but for value
	PersistValue(valuePtr []byte) (bool, error)
	// Height returns number of last block trie was persist for
	Height() (uint64, error)
	// CommitChanges frees all inMemory nodes and actually stores nodes and value marked to be persist by
	// PersistNode and PersistValue in single backend store update - usually used with block number
	CommitChanges(blockNum uint64) error
	// RollbackChanges free all in memory nodes and nodes marked to be persist, without storing anything in
	// underlying database. Operation can cause to current MPTrie become invalid, so always reload trie
	// after the call
	RollbackChanges() error
	// IsDisabled is true when the MP-Trie is disabled.
	IsDisabled() bool
	// SetDisabled disabled the MPTrie
	SetDisabled(disabled bool)
}

type TrieNode interface {
	// contains filtered or unexported methods
}

type TrieNodeWithValue interface {
	TrieNode
	// contains filtered or unexported methods
}

type ValueNode struct {
	Key                  []byte   `protobuf:"bytes,1,opt,name=key,proto3" json:"key,omitempty"`
	ValuePtr             []byte   `protobuf:"bytes,2,opt,name=valuePtr,proto3" json:"valuePtr,omitempty"`
	Deleted              bool     `protobuf:"varint,3,opt,name=deleted,proto3" json:"deleted,omitempty"`
	XXX_NoUnkeyedLiteral struct{} `json:"-"`
	XXX_unrecognized     []byte   `json:"-"`
	XXX_sizecache        int32    `json:"-"`
}