path: root/tests/helper/trie.go

package helper

import "github.com/ethereum/go-ethereum/ethtrie"

type MemDatabase struct {
    db map[string][]byte
}

func NewMemDatabase() (*MemDatabase, error) {
    db := &MemDatabase{db: make(map[string][]byte)}
    return db, nil
}
func (db *MemDatabase) Put(key []byte, value []byte) {
    db.db[string(key)] = value
}
func (db *MemDatabase) Get(key []byte) ([]byte, error) {
    return db.db[string(key)], nil
}
func (db *MemDatabase) Delete(key []byte) error {
    delete(db.db, string(key))
    return nil
}
func (db *MemDatabase) Print()              {}
func (db *MemDatabase) Close()              {}
func (db *MemDatabase) LastKnownTD() []byte { return nil }

func NewTrie() *ethtrie.Trie {
    db, _ := NewMemDatabase()

    return ethtrie.New(db, "")
}