1 files changed, 67 insertions, 0 deletions
diff --git a/ethstate/manifest.go b/ethstate/manifest.go
new file mode 100644
index 000000000..b771127a6
--- /dev/null
+++ b/ethstate/manifest.go
@@ -0,0 +1,67 @@
+package ethstate
+
+import (
+	"fmt"
+	"math/big"
+)
+
+// Object manifest
+//
+// The object manifest is used to keep changes to the state so we can keep track of the changes
+// that occurred during a state transitioning phase.
+type Manifest struct {
+	// XXX These will be handy in the future. Not important for now.
+	objectAddresses  map[string]bool
+	storageAddresses map[string]map[string]bool
+
+	ObjectChanges  map[string]*StateObject
+	StorageChanges map[string]map[string]*big.Int
+
+	Messages []*Message
+}
+
+func NewManifest() *Manifest {
+	m := &Manifest{objectAddresses: make(map[string]bool), storageAddresses: make(map[string]map[string]bool)}
+	m.Reset()
+
+	return m
+}
+
+func (m *Manifest) Reset() {
+	m.ObjectChanges = make(map[string]*StateObject)
+	m.StorageChanges = make(map[string]map[string]*big.Int)
+}
+
+func (m *Manifest) AddObjectChange(stateObject *StateObject) {
+	m.ObjectChanges[string(stateObject.Address())] = stateObject
+}
+
+func (m *Manifest) AddStorageChange(stateObject *StateObject, storageAddr []byte, storage *big.Int) {
+	if m.StorageChanges[string(stateObject.Address())] == nil {
+		m.StorageChanges[string(stateObject.Address())] = make(map[string]*big.Int)
+	}
+
+	m.StorageChanges[string(stateObject.Address())][string(storageAddr)] = storage
+}
+
+func (self *Manifest) AddMessage(msg *Message) *Message {
+	self.Messages = append(self.Messages, msg)
+
+	return msg
+}
+
+type Message struct {
+	To, From  []byte
+	Input     []byte
+	Output    []byte
+	Path      int
+	Origin    []byte
+	Timestamp int64
+	Coinbase  []byte
+	Block     []byte
+	Number    *big.Int
+}
+
+func (self *Message) String() string {
+	return fmt.Sprintf("Message{to: %x from: %x input: %x output: %x origin: %x coinbase: %x block: %x number: %v timestamp: %d path: %d", self.To, self.From, self.Input, self.Output, self.Origin, self.Coinbase, self.Block, self.Number, self.Timestamp, self.Path)
+}