Skeleton of Ethermint

Gopkg.toml

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+# Gopkg.toml example
+#
+# Refer to https://github.com/golang/dep/blob/master/docs/Gopkg.toml.md
+# for detailed Gopkg.toml documentation.
+#
+# required = ["github.com/user/thing/cmd/thing"]
+# ignored = ["github.com/user/project/pkgX", "bitbucket.org/user/project/pkgA/pkgY"]
+#
+# [[constraint]]
+#   name = "github.com/user/project"
+#   version = "1.0.0"
+#
+# [[constraint]]
+#   name = "github.com/user/project2"
+#   branch = "dev"
+#   source = "github.com/myfork/project2"
+#
+# [[override]]
+#   name = "github.com/x/y"
+#   version = "2.4.0"
+#
+# [prune]
+#   non-go = false
+#   go-tests = true
+#   unused-packages = true
+
+[[constraint]]
+  name = "github.com/tendermint/iavl"
+  version = "0.8.0-rc0"
+
+[prune]
+  go-tests = true

main.go

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+package main
+
+import (
+	"fmt"
+
+	eth_common "github.com/ethereum/go-ethereum/common"
+	eth_state "github.com/ethereum/go-ethereum/core/state"
+	eth_ethdb "github.com/ethereum/go-ethereum/ethdb"
+	eth_trie "github.com/ethereum/go-ethereum/trie"
+
+	dbm "github.com/tendermint/tmlibs/db"
+	"github.com/tendermint/iavl"
+)
+
+// Implementation of eth_state.Database
+type OurDatabase struct {
+	tree *iavl.Tree
+}
+
+func OurNewDatabase(db dbm.DB, cacheSize int) *OurDatabase {
+	od := &OurDatabase{}
+	od.tree = iavl.NewTree(db, cacheSize)
+	return od
+}
+
+func (od *OurDatabase) OpenTrie(root eth_common.Hash) (eth_state.Trie, error) {
+	return &OurTrie{}, nil
+}
+
+func (od *OurDatabase) OpenStorageTrie(addrHash, root eth_common.Hash) (eth_state.Trie, error) {
+	return nil, nil
+}
+
+func (od *OurDatabase) CopyTrie(eth_state.Trie) eth_state.Trie {
+	return nil
+}
+
+func (od *OurDatabase) ContractCode(addrHash, codeHash eth_common.Hash) ([]byte, error) {
+	return nil, nil
+}
+
+func (od *OurDatabase) ContractCodeSize(addrHash, codeHash eth_common.Hash) (int, error) {
+	return 0, nil
+}
+
+func (od *OurDatabase) TrieDB() *eth_trie.Database {
+	return nil
+}
+
+// Implementation of eth_state.Trie
+type OurTrie struct {
+}
+
+func (ot *OurTrie) TryGet(key []byte) ([]byte, error) {
+	return nil, nil
+}
+
+func (ot *OurTrie) TryUpdate(key, value []byte) error {
+	return nil
+}
+
+func (ot *OurTrie) TryDelete(key []byte) error {
+	return nil
+}
+
+func (ot *OurTrie) Commit(onleaf eth_trie.LeafCallback) (eth_common.Hash, error) {
+	return eth_common.Hash{}, nil
+}
+
+func (ot *OurTrie) Hash() eth_common.Hash {
+	return eth_common.Hash{}
+}
+
+func (ot *OurTrie) NodeIterator(startKey []byte) eth_trie.NodeIterator {
+	return nil
+}
+
+func (ot *OurTrie) GetKey([]byte) []byte {
+	return nil
+}
+
+func (ot *OurTrie) Prove(key []byte, fromLevel uint, proofDb eth_ethdb.Putter) error {
+	return nil
+}
+
+func main() {
+	fmt.Printf("Instantiating state.Database\n")
+	db := dbm.NewDB("test" /* name */, dbm.MemDBBackend, "" /* dir */)
+	var d eth_state.Database
+	d = OurNewDatabase(db, 1024)
+	d.OpenTrie(eth_common.Hash{})
+}