1 files changed, 99 insertions, 4 deletions

diff --git a/ethutil/value.go b/ethutil/value.go
index 735a71dbc..608d332ba 100644
--- a/ethutil/value.go
+++ b/ethutil/value.go
@@ -1,7 +1,6 @@
 package ethutil
 
 import (
-	"bytes"
 	"fmt"
 	"math/big"
 	"reflect"
@@ -67,7 +66,7 @@ func (val *Value) Uint() uint64 {
 	} else if Val, ok := val.Val.(uint); ok {
 		return uint64(Val)
 	} else if Val, ok := val.Val.([]byte); ok {
-		return ReadVarint(bytes.NewReader(Val))
+		return new(big.Int).SetBytes(Val).Uint64()
 	} else if Val, ok := val.Val.(*big.Int); ok {
 		return Val.Uint64()
 	}
@@ -75,6 +74,30 @@ func (val *Value) Uint() uint64 {
 	return 0
 }
 
+func (val *Value) Int() int64 {
+	if Val, ok := val.Val.(int8); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(int16); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(int32); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(int64); ok {
+		return Val
+	} else if Val, ok := val.Val.(int); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(float32); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.(float64); ok {
+		return int64(Val)
+	} else if Val, ok := val.Val.([]byte); ok {
+		return new(big.Int).SetBytes(Val).Int64()
+	} else if Val, ok := val.Val.(*big.Int); ok {
+		return Val.Int64()
+	}
+
+	return 0
+}
+
 func (val *Value) Byte() byte {
 	if Val, ok := val.Val.(byte); ok {
 		return Val
@@ -123,6 +146,14 @@ func (val *Value) Bytes() []byte {
 	return []byte{}
 }
 
+func (val *Value) Err() error {
+	if err, ok := val.Val.(error); ok {
+		return err
+	}
+
+	return nil
+}
+
 func (val *Value) Slice() []interface{} {
 	if d, ok := val.Val.([]interface{}); ok {
 		return d
@@ -158,6 +189,11 @@ func (val *Value) IsStr() bool {
 	return val.Type() == reflect.String
 }
 
+func (self *Value) IsErr() bool {
+	_, ok := self.Val.(error)
+	return ok
+}
+
 // Special list checking function. Something is considered
 // a list if it's of type []interface{}. The list is usually
 // used in conjunction with rlp decoded streams.
@@ -207,6 +243,13 @@ func (val *Value) Cmp(o *Value) bool {
 	return reflect.DeepEqual(val.Val, o.Val)
 }
 
+func (self *Value) DeepCmp(o *Value) bool {
+	a := NewValue(self.BigInt())
+	b := NewValue(o.BigInt())
+
+	return a.Cmp(b)
+}
+
 func (val *Value) Encode() []byte {
 	return Encode(val.Val)
 }
@@ -215,12 +258,15 @@ func (val *Value) Encode() []byte {
 func (self *Value) Decode() {
 	v, _ := Decode(self.Bytes(), 0)
 	self.Val = v
+	//self.Val = DecodeWithReader(bytes.NewBuffer(self.Bytes()))
 }
 
 func NewValueFromBytes(data []byte) *Value {
 	if len(data) != 0 {
-		data, _ := Decode(data, 0)
-		return NewValue(data)
+		value := NewValue(data)
+		value.Decode()
+
+		return value
 	}
 
 	return NewValue(nil)
@@ -262,6 +308,55 @@ func (val *Value) Append(v interface{}) *Value {
 	return val
 }
 
+const (
+	valOpAdd = iota
+	valOpDiv
+	valOpMul
+	valOpPow
+	valOpSub
+)
+
+// Math stuff
+func (self *Value) doOp(op int, other interface{}) *Value {
+	left := self.BigInt()
+	right := NewValue(other).BigInt()
+
+	switch op {
+	case valOpAdd:
+		self.Val = left.Add(left, right)
+	case valOpDiv:
+		self.Val = left.Div(left, right)
+	case valOpMul:
+		self.Val = left.Mul(left, right)
+	case valOpPow:
+		self.Val = left.Exp(left, right, Big0)
+	case valOpSub:
+		self.Val = left.Sub(left, right)
+	}
+
+	return self
+}
+
+func (self *Value) Add(other interface{}) *Value {
+	return self.doOp(valOpAdd, other)
+}
+
+func (self *Value) Sub(other interface{}) *Value {
+	return self.doOp(valOpSub, other)
+}
+
+func (self *Value) Div(other interface{}) *Value {
+	return self.doOp(valOpDiv, other)
+}
+
+func (self *Value) Mul(other interface{}) *Value {
+	return self.doOp(valOpMul, other)
+}
+
+func (self *Value) Pow(other interface{}) *Value {
+	return self.doOp(valOpPow, other)
+}
+
 type ValueIterator struct {
 	value        *Value
 	currentValue *Value