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authorobscuren <geffobscura@gmail.com>2015-03-16 18:27:38 +0800
committerobscuren <geffobscura@gmail.com>2015-03-16 18:27:38 +0800
commitb5234413611ce5984292f85a01de1f56c045b490 (patch)
treee6e0c6f7fe8358a2dc63cdea11ac66b4f59397f5 /ethutil/value.go
parent0b8f66ed9ef177dc72442dd7ba337c6733e30344 (diff)
downloadgo-tangerine-b5234413611ce5984292f85a01de1f56c045b490.tar.gz
go-tangerine-b5234413611ce5984292f85a01de1f56c045b490.tar.zst
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Moved ethutil => common
Diffstat (limited to 'ethutil/value.go')
-rw-r--r--ethutil/value.go401
1 files changed, 0 insertions, 401 deletions
diff --git a/ethutil/value.go b/ethutil/value.go
deleted file mode 100644
index 7d4a7d98c..000000000
--- a/ethutil/value.go
+++ /dev/null
@@ -1,401 +0,0 @@
-package ethutil
-
-import (
- "bytes"
- "fmt"
- "math/big"
- "reflect"
- "strconv"
-)
-
-// Data values are returned by the rlp decoder. The data values represents
-// one item within the rlp data structure. It's responsible for all the casting
-// It always returns something valid
-type Value struct {
- Val interface{}
- kind reflect.Value
-}
-
-func (val *Value) String() string {
- return fmt.Sprintf("%x", val.Val)
-}
-
-func NewValue(val interface{}) *Value {
- t := val
- if v, ok := val.(*Value); ok {
- t = v.Val
- }
-
- return &Value{Val: t}
-}
-
-func (val *Value) Type() reflect.Kind {
- return reflect.TypeOf(val.Val).Kind()
-}
-
-func (val *Value) IsNil() bool {
- return val.Val == nil
-}
-
-func (val *Value) Len() int {
- //return val.kind.Len()
- if data, ok := val.Val.([]interface{}); ok {
- return len(data)
- }
-
- return len(val.Bytes())
-}
-
-func (val *Value) Raw() interface{} {
- return val.Val
-}
-
-func (val *Value) Interface() interface{} {
- return val.Val
-}
-
-func (val *Value) Uint() uint64 {
- if Val, ok := val.Val.(uint8); ok {
- return uint64(Val)
- } else if Val, ok := val.Val.(uint16); ok {
- return uint64(Val)
- } else if Val, ok := val.Val.(uint32); ok {
- return uint64(Val)
- } else if Val, ok := val.Val.(uint64); ok {
- return Val
- } else if Val, ok := val.Val.(float32); ok {
- return uint64(Val)
- } else if Val, ok := val.Val.(float64); ok {
- return uint64(Val)
- } else if Val, ok := val.Val.(int); ok {
- return uint64(Val)
- } else if Val, ok := val.Val.(uint); ok {
- return uint64(Val)
- } else if Val, ok := val.Val.([]byte); ok {
- return new(big.Int).SetBytes(Val).Uint64()
- } else if Val, ok := val.Val.(*big.Int); ok {
- return Val.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()
- } else if Val, ok := val.Val.(string); ok {
- n, _ := strconv.Atoi(Val)
- return int64(n)
- }
-
- return 0
-}
-
-func (val *Value) Byte() byte {
- if Val, ok := val.Val.(byte); ok {
- return Val
- }
-
- return 0x0
-}
-
-func (val *Value) BigInt() *big.Int {
- if a, ok := val.Val.([]byte); ok {
- b := new(big.Int).SetBytes(a)
-
- return b
- } else if a, ok := val.Val.(*big.Int); ok {
- return a
- } else if a, ok := val.Val.(string); ok {
- return Big(a)
- } else {
- return big.NewInt(int64(val.Uint()))
- }
-
- return big.NewInt(0)
-}
-
-func (val *Value) Str() string {
- if a, ok := val.Val.([]byte); ok {
- return string(a)
- } else if a, ok := val.Val.(string); ok {
- return a
- } else if a, ok := val.Val.(byte); ok {
- return string(a)
- }
-
- return ""
-}
-
-func (val *Value) Bytes() []byte {
- if a, ok := val.Val.([]byte); ok {
- return a
- } else if s, ok := val.Val.(byte); ok {
- return []byte{s}
- } else if s, ok := val.Val.(string); ok {
- return []byte(s)
- } else if s, ok := val.Val.(*big.Int); ok {
- return s.Bytes()
- } else {
- return big.NewInt(val.Int()).Bytes()
- }
-
- 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
- }
-
- return []interface{}{}
-}
-
-func (val *Value) SliceFrom(from int) *Value {
- slice := val.Slice()
-
- return NewValue(slice[from:])
-}
-
-func (val *Value) SliceTo(to int) *Value {
- slice := val.Slice()
-
- return NewValue(slice[:to])
-}
-
-func (val *Value) SliceFromTo(from, to int) *Value {
- slice := val.Slice()
-
- return NewValue(slice[from:to])
-}
-
-// TODO More type checking methods
-func (val *Value) IsSlice() bool {
- return val.Type() == reflect.Slice
-}
-
-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.
-func (val *Value) IsList() bool {
- _, ok := val.Val.([]interface{})
-
- return ok
-}
-
-func (val *Value) IsEmpty() bool {
- return val.Val == nil || ((val.IsSlice() || val.IsStr()) && val.Len() == 0)
-}
-
-// Threat the value as a slice
-func (val *Value) Get(idx int) *Value {
- if d, ok := val.Val.([]interface{}); ok {
- // Guard for oob
- if len(d) <= idx {
- return NewValue(nil)
- }
-
- if idx < 0 {
- return NewValue(nil)
- }
-
- return NewValue(d[idx])
- }
-
- // If this wasn't a slice you probably shouldn't be using this function
- return NewValue(nil)
-}
-
-func (self *Value) Copy() *Value {
- switch val := self.Val.(type) {
- case *big.Int:
- return NewValue(new(big.Int).Set(val))
- case []byte:
- return NewValue(CopyBytes(val))
- default:
- return NewValue(self.Val)
- }
-
- return nil
-}
-
-func (val *Value) Cmp(o *Value) bool {
- return reflect.DeepEqual(val.Val, o.Val)
-}
-
-func (self *Value) DeepCmp(o *Value) bool {
- return bytes.Compare(self.Bytes(), o.Bytes()) == 0
-}
-
-func (val *Value) Encode() []byte {
- return Encode(val.Val)
-}
-
-// Assume that the data we have is encoded
-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 {
- value := NewValue(data)
- value.Decode()
-
- return value
- }
-
- return NewValue(nil)
-}
-
-// Value setters
-func NewSliceValue(s interface{}) *Value {
- list := EmptyValue()
-
- if s != nil {
- if slice, ok := s.([]interface{}); ok {
- for _, val := range slice {
- list.Append(val)
- }
- } else if slice, ok := s.([]string); ok {
- for _, val := range slice {
- list.Append(val)
- }
- }
- }
-
- return list
-}
-
-func EmptyValue() *Value {
- return NewValue([]interface{}{})
-}
-
-func (val *Value) AppendList() *Value {
- list := EmptyValue()
- val.Val = append(val.Slice(), list)
-
- return list
-}
-
-func (val *Value) Append(v interface{}) *Value {
- val.Val = append(val.Slice(), v)
-
- 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
- idx int
-}
-
-func (val *Value) NewIterator() *ValueIterator {
- return &ValueIterator{value: val}
-}
-
-func (it *ValueIterator) Len() int {
- return it.value.Len()
-}
-
-func (it *ValueIterator) Next() bool {
- if it.idx >= it.value.Len() {
- return false
- }
-
- it.currentValue = it.value.Get(it.idx)
- it.idx++
-
- return true
-}
-
-func (it *ValueIterator) Value() *Value {
- return it.currentValue
-}
-
-func (it *ValueIterator) Idx() int {
- return it.idx - 1
-}