1 files changed, 55 insertions, 0 deletions
diff --git a/state/manifest.go b/state/manifest.go
new file mode 100644
index 000000000..21cd04a1a
--- /dev/null
+++ b/state/manifest.go
@@ -0,0 +1,55 @@
+package state
+
+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 {
+	Messages Messages
+}
+
+func NewManifest() *Manifest {
+	m := &Manifest{}
+	m.Reset()
+
+	return m
+}
+
+func (m *Manifest) Reset() {
+	m.Messages = nil
+}
+
+func (self *Manifest) AddMessage(msg *Message) *Message {
+	self.Messages = append(self.Messages, msg)
+
+	return msg
+}
+
+type Messages []*Message
+type Message struct {
+	To, From  []byte
+	Input     []byte
+	Output    []byte
+	Path      int
+	Origin    []byte
+	Timestamp int64
+	Coinbase  []byte
+	Block     []byte
+	Number    *big.Int
+	Value     *big.Int
+
+	ChangedAddresses [][]byte
+}
+
+func (self *Message) AddStorageChange(addr []byte) {
+	self.ChangedAddresses = append(self.ChangedAddresses, addr)
+}
+
+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 value: %v", self.To, self.From, self.Input, self.Output, self.Origin, self.Coinbase, self.Block, self.Number, self.Timestamp, self.Path, self.Value)
+}