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-rw-r--r--common/.gitignore12
-rw-r--r--common/.travis.yml3
-rw-r--r--common/README.md140
-rw-r--r--common/big.go140
-rw-r--r--common/big_test.go89
-rw-r--r--common/bytes.go155
-rw-r--r--common/bytes_test.go108
-rw-r--r--common/icap.go190
-rw-r--r--common/icap_test.go91
-rw-r--r--common/list.go97
-rw-r--r--common/math/big.go143
-rw-r--r--common/math/big_test.go196
-rw-r--r--common/math/dist.go96
-rw-r--r--common/math/dist_test.go82
-rw-r--r--common/math/exp.go47
-rw-r--r--common/math/integer.go65
-rw-r--r--common/math/integer_test.go75
-rw-r--r--common/size.go52
-rw-r--r--common/size_test.go53
-rw-r--r--common/types.go4
-rw-r--r--common/types_template.go2
21 files changed, 494 insertions, 1346 deletions
diff --git a/common/.gitignore b/common/.gitignore
deleted file mode 100644
index f725d58d1..000000000
--- a/common/.gitignore
+++ /dev/null
@@ -1,12 +0,0 @@
-# See http://help.github.com/ignore-files/ for more about ignoring files.
-#
-# If you find yourself ignoring temporary files generated by your text editor
-# or operating system, you probably want to add a global ignore instead:
-# git config --global core.excludesfile ~/.gitignore_global
-
-/tmp
-*/**/*un~
-*un~
-.DS_Store
-*/**/.DS_Store
-
diff --git a/common/.travis.yml b/common/.travis.yml
deleted file mode 100644
index 69359072d..000000000
--- a/common/.travis.yml
+++ /dev/null
@@ -1,3 +0,0 @@
-language: go
-go:
- - 1.2
diff --git a/common/README.md b/common/README.md
deleted file mode 100644
index adea022b7..000000000
--- a/common/README.md
+++ /dev/null
@@ -1,140 +0,0 @@
-# common
-
-[![Build
-Status](https://travis-ci.org/ethereum/go-ethereum.png?branch=master)](https://travis-ci.org/ethereum/go-ethereum)
-
-The common package contains the ethereum utility library.
-
-# Installation
-
-As a subdirectory the main go-ethereum repository, you get it with
-`go get github.com/ethereum/go-ethereum`.
-
-# Usage
-
-## RLP (Recursive Linear Prefix) Encoding
-
-RLP Encoding is an encoding scheme used by the Ethereum project. It
-encodes any native value or list to a string.
-
-More in depth information about the encoding scheme see the
-[Wiki](http://wiki.ethereum.org/index.php/RLP) article.
-
-```go
-rlp := common.Encode("doge")
-fmt.Printf("%q\n", rlp) // => "\0x83dog"
-
-rlp = common.Encode([]interface{}{"dog", "cat"})
-fmt.Printf("%q\n", rlp) // => "\0xc8\0x83dog\0x83cat"
-decoded := common.Decode(rlp)
-fmt.Println(decoded) // => ["dog" "cat"]
-```
-
-## Patricia Trie
-
-Patricie Tree is a merkle trie used by the Ethereum project.
-
-More in depth information about the (modified) Patricia Trie can be
-found on the [Wiki](http://wiki.ethereum.org/index.php/Patricia_Tree).
-
-The patricia trie uses a db as backend and could be anything as long as
-it satisfies the Database interface found in `common/db.go`.
-
-```go
-db := NewDatabase()
-
-// db, root
-trie := common.NewTrie(db, "")
-
-trie.Put("puppy", "dog")
-trie.Put("horse", "stallion")
-trie.Put("do", "verb")
-trie.Put("doge", "coin")
-
-// Look up the key "do" in the trie
-out := trie.Get("do")
-fmt.Println(out) // => verb
-
-trie.Delete("puppy")
-```
-
-The patricia trie, in combination with RLP, provides a robust,
-cryptographically authenticated data structure that can be used to store
-all (key, value) bindings.
-
-```go
-// ... Create db/trie
-
-// Note that RLP uses interface slices as list
-value := common.Encode([]interface{}{"one", 2, "three", []interface{}{42}})
-// Store the RLP encoded value of the list
-trie.Put("mykey", value)
-```
-
-## Value
-
-Value is a Generic Value which is used in combination with RLP data or
-`([])interface{}` structures. It may serve as a bridge between RLP data
-and actual real values and takes care of all the type checking and
-casting. Unlike Go's `reflect.Value` it does not panic if it's unable to
-cast to the requested value. It simple returns the base value of that
-type (e.g. `Slice()` returns []interface{}, `Uint()` return 0, etc).
-
-### Creating a new Value
-
-`NewEmptyValue()` returns a new \*Value with it's initial value set to a
-`[]interface{}`
-
-`AppendList()` appends a list to the current value.
-
-`Append(v)` appends the value (v) to the current value/list.
-
-```go
-val := common.NewEmptyValue().Append(1).Append("2")
-val.AppendList().Append(3)
-```
-
-### Retrieving values
-
-`Get(i)` returns the `i` item in the list.
-
-`Uint()` returns the value as an unsigned int64.
-
-`Slice()` returns the value as a interface slice.
-
-`Str()` returns the value as a string.
-
-`Bytes()` returns the value as a byte slice.
-
-`Len()` assumes current to be a slice and returns its length.
-
-`Byte()` returns the value as a single byte.
-
-```go
-val := common.NewValue([]interface{}{1,"2",[]interface{}{3}})
-val.Get(0).Uint() // => 1
-val.Get(1).Str() // => "2"
-s := val.Get(2) // => Value([]interface{}{3})
-s.Get(0).Uint() // => 3
-```
-
-## Decoding
-
-Decoding streams of RLP data is simplified
-
-```go
-val := common.NewValueFromBytes(rlpData)
-val.Get(0).Uint()
-```
-
-## Encoding
-
-Encoding from Value to RLP is done with the `Encode` method. The
-underlying value can be anything RLP can encode (int, str, lists, bytes)
-
-```go
-val := common.NewValue([]interface{}{1,"2",[]interface{}{3}})
-rlp := val.Encode()
-// Store the rlp data
-Store(rlp)
-```
diff --git a/common/big.go b/common/big.go
index 4ce87ee0c..b552608bc 100644
--- a/common/big.go
+++ b/common/big.go
@@ -20,137 +20,11 @@ import "math/big"
// Common big integers often used
var (
- Big1 = big.NewInt(1)
- Big2 = big.NewInt(2)
- Big3 = big.NewInt(3)
- Big0 = big.NewInt(0)
- BigTrue = Big1
- BigFalse = Big0
- Big32 = big.NewInt(32)
- Big36 = big.NewInt(36)
- Big97 = big.NewInt(97)
- Big98 = big.NewInt(98)
- Big256 = big.NewInt(0xff)
- Big257 = big.NewInt(257)
- MaxBig = String2Big("0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff")
+ Big1 = big.NewInt(1)
+ Big2 = big.NewInt(2)
+ Big3 = big.NewInt(3)
+ Big0 = big.NewInt(0)
+ Big32 = big.NewInt(32)
+ Big256 = big.NewInt(0xff)
+ Big257 = big.NewInt(257)
)
-
-// Big pow
-//
-// Returns the power of two big integers
-func BigPow(a, b int) *big.Int {
- c := new(big.Int)
- c.Exp(big.NewInt(int64(a)), big.NewInt(int64(b)), big.NewInt(0))
-
- return c
-}
-
-// Big
-//
-// Shortcut for new(big.Int).SetString(..., 0)
-func Big(num string) *big.Int {
- n := new(big.Int)
- n.SetString(num, 0)
-
- return n
-}
-
-// Bytes2Big
-//
-func BytesToBig(data []byte) *big.Int {
- n := new(big.Int)
- n.SetBytes(data)
-
- return n
-}
-func Bytes2Big(data []byte) *big.Int { return BytesToBig(data) }
-func BigD(data []byte) *big.Int { return BytesToBig(data) }
-
-func String2Big(num string) *big.Int {
- n := new(big.Int)
- n.SetString(num, 0)
- return n
-}
-
-func BitTest(num *big.Int, i int) bool {
- return num.Bit(i) > 0
-}
-
-// To256
-//
-// "cast" the big int to a 256 big int (i.e., limit to)
-var tt256 = new(big.Int).Lsh(big.NewInt(1), 256)
-var tt256m1 = new(big.Int).Sub(new(big.Int).Lsh(big.NewInt(1), 256), big.NewInt(1))
-var tt255 = new(big.Int).Lsh(big.NewInt(1), 255)
-
-func U256(x *big.Int) *big.Int {
- //if x.Cmp(Big0) < 0 {
- // return new(big.Int).Add(tt256, x)
- // }
-
- x.And(x, tt256m1)
-
- return x
-}
-
-func S256(x *big.Int) *big.Int {
- if x.Cmp(tt255) < 0 {
- return x
- } else {
- // We don't want to modify x, ever
- return new(big.Int).Sub(x, tt256)
- }
-}
-
-func FirstBitSet(v *big.Int) int {
- for i := 0; i < v.BitLen(); i++ {
- if v.Bit(i) > 0 {
- return i
- }
- }
-
- return v.BitLen()
-}
-
-// Big to bytes
-//
-// Returns the bytes of a big integer with the size specified by **base**
-// Attempts to pad the byte array with zeros.
-func BigToBytes(num *big.Int, base int) []byte {
- ret := make([]byte, base/8)
-
- if len(num.Bytes()) > base/8 {
- return num.Bytes()
- }
-
- return append(ret[:len(ret)-len(num.Bytes())], num.Bytes()...)
-}
-
-// Big copy
-//
-// Creates a copy of the given big integer
-func BigCopy(src *big.Int) *big.Int {
- return new(big.Int).Set(src)
-}
-
-// Big max
-//
-// Returns the maximum size big integer
-func BigMax(x, y *big.Int) *big.Int {
- if x.Cmp(y) < 0 {
- return y
- }
-
- return x
-}
-
-// Big min
-//
-// Returns the minimum size big integer
-func BigMin(x, y *big.Int) *big.Int {
- if x.Cmp(y) > 0 {
- return y
- }
-
- return x
-}
diff --git a/common/big_test.go b/common/big_test.go
deleted file mode 100644
index 4d04a8db3..000000000
--- a/common/big_test.go
+++ /dev/null
@@ -1,89 +0,0 @@
-// Copyright 2014 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package common
-
-import (
- "bytes"
- "testing"
-)
-
-func TestMisc(t *testing.T) {
- a := Big("10")
- b := Big("57896044618658097711785492504343953926634992332820282019728792003956564819968")
- c := []byte{1, 2, 3, 4}
- z := BitTest(a, 1)
-
- if !z {
- t.Error("Expected true got", z)
- }
-
- U256(a)
- S256(a)
-
- U256(b)
- S256(b)
-
- BigD(c)
-}
-
-func TestBigMax(t *testing.T) {
- a := Big("10")
- b := Big("5")
-
- max1 := BigMax(a, b)
- if max1 != a {
- t.Errorf("Expected %d got %d", a, max1)
- }
-
- max2 := BigMax(b, a)
- if max2 != a {
- t.Errorf("Expected %d got %d", a, max2)
- }
-}
-
-func TestBigMin(t *testing.T) {
- a := Big("10")
- b := Big("5")
-
- min1 := BigMin(a, b)
- if min1 != b {
- t.Errorf("Expected %d got %d", b, min1)
- }
-
- min2 := BigMin(b, a)
- if min2 != b {
- t.Errorf("Expected %d got %d", b, min2)
- }
-}
-
-func TestBigCopy(t *testing.T) {
- a := Big("10")
- b := BigCopy(a)
- c := Big("1000000000000")
- y := BigToBytes(b, 16)
- ybytes := []byte{0, 10}
- z := BigToBytes(c, 16)
- zbytes := []byte{232, 212, 165, 16, 0}
-
- if !bytes.Equal(y, ybytes) {
- t.Error("Got", ybytes)
- }
-
- if !bytes.Equal(z, zbytes) {
- t.Error("Got", zbytes)
- }
-}
diff --git a/common/bytes.go b/common/bytes.go
index cbceea8b5..0342083a1 100644
--- a/common/bytes.go
+++ b/common/bytes.go
@@ -18,12 +18,7 @@
package common
import (
- "bytes"
- "encoding/binary"
"encoding/hex"
- "fmt"
- "math/big"
- "strings"
)
func ToHex(b []byte) string {
@@ -48,65 +43,6 @@ func FromHex(s string) []byte {
return nil
}
-// Number to bytes
-//
-// Returns the number in bytes with the specified base
-func NumberToBytes(num interface{}, bits int) []byte {
- buf := new(bytes.Buffer)
- err := binary.Write(buf, binary.BigEndian, num)
- if err != nil {
- fmt.Println("NumberToBytes failed:", err)
- }
-
- return buf.Bytes()[buf.Len()-(bits/8):]
-}
-
-// Bytes to number
-//
-// Attempts to cast a byte slice to a unsigned integer
-func BytesToNumber(b []byte) uint64 {
- var number uint64
-
- // Make sure the buffer is 64bits
- data := make([]byte, 8)
- data = append(data[:len(b)], b...)
-
- buf := bytes.NewReader(data)
- err := binary.Read(buf, binary.BigEndian, &number)
- if err != nil {
- fmt.Println("BytesToNumber failed:", err)
- }
-
- return number
-}
-
-// Read variable int
-//
-// Read a variable length number in big endian byte order
-func ReadVarInt(buff []byte) (ret uint64) {
- switch l := len(buff); {
- case l > 4:
- d := LeftPadBytes(buff, 8)
- binary.Read(bytes.NewReader(d), binary.BigEndian, &ret)
- case l > 2:
- var num uint32
- d := LeftPadBytes(buff, 4)
- binary.Read(bytes.NewReader(d), binary.BigEndian, &num)
- ret = uint64(num)
- case l > 1:
- var num uint16
- d := LeftPadBytes(buff, 2)
- binary.Read(bytes.NewReader(d), binary.BigEndian, &num)
- ret = uint64(num)
- default:
- var num uint8
- binary.Read(bytes.NewReader(buff), binary.BigEndian, &num)
- ret = uint64(num)
- }
-
- return
-}
-
// Copy bytes
//
// Returns an exact copy of the provided bytes
@@ -152,53 +88,6 @@ func Hex2BytesFixed(str string, flen int) []byte {
}
}
-func StringToByteFunc(str string, cb func(str string) []byte) (ret []byte) {
- if len(str) > 1 && str[0:2] == "0x" && !strings.Contains(str, "\n") {
- ret = Hex2Bytes(str[2:])
- } else {
- ret = cb(str)
- }
-
- return
-}
-
-func FormatData(data string) []byte {
- if len(data) == 0 {
- return nil
- }
- // Simple stupid
- d := new(big.Int)
- if data[0:1] == "\"" && data[len(data)-1:] == "\"" {
- return RightPadBytes([]byte(data[1:len(data)-1]), 32)
- } else if len(data) > 1 && data[:2] == "0x" {
- d.SetBytes(Hex2Bytes(data[2:]))
- } else {
- d.SetString(data, 0)
- }
-
- return BigToBytes(d, 256)
-}
-
-func ParseData(data ...interface{}) (ret []byte) {
- for _, item := range data {
- switch t := item.(type) {
- case string:
- var str []byte
- if IsHex(t) {
- str = Hex2Bytes(t[2:])
- } else {
- str = []byte(t)
- }
-
- ret = append(ret, RightPadBytes(str, 32)...)
- case []byte:
- ret = append(ret, LeftPadBytes(t, 32)...)
- }
- }
-
- return
-}
-
func RightPadBytes(slice []byte, l int) []byte {
if l < len(slice) {
return slice
@@ -220,47 +109,3 @@ func LeftPadBytes(slice []byte, l int) []byte {
return padded
}
-
-func LeftPadString(str string, l int) string {
- if l < len(str) {
- return str
- }
-
- zeros := Bytes2Hex(make([]byte, (l-len(str))/2))
-
- return zeros + str
-
-}
-
-func RightPadString(str string, l int) string {
- if l < len(str) {
- return str
- }
-
- zeros := Bytes2Hex(make([]byte, (l-len(str))/2))
-
- return str + zeros
-
-}
-
-func ToAddress(slice []byte) (addr []byte) {
- if len(slice) < 20 {
- addr = LeftPadBytes(slice, 20)
- } else if len(slice) > 20 {
- addr = slice[len(slice)-20:]
- } else {
- addr = slice
- }
-
- addr = CopyBytes(addr)
-
- return
-}
-
-func ByteSliceToInterface(slice [][]byte) (ret []interface{}) {
- for _, i := range slice {
- ret = append(ret, i)
- }
-
- return
-}
diff --git a/common/bytes_test.go b/common/bytes_test.go
index 98d402c48..fc164b13d 100644
--- a/common/bytes_test.go
+++ b/common/bytes_test.go
@@ -27,54 +27,6 @@ type BytesSuite struct{}
var _ = checker.Suite(&BytesSuite{})
-func (s *BytesSuite) TestNumberToBytes(c *checker.C) {
- // data1 := int(1)
- // res1 := NumberToBytes(data1, 16)
- // c.Check(res1, checker.Panics)
-
- var data2 float64 = 3.141592653
- exp2 := []byte{0xe9, 0x38}
- res2 := NumberToBytes(data2, 16)
- c.Assert(res2, checker.DeepEquals, exp2)
-}
-
-func (s *BytesSuite) TestBytesToNumber(c *checker.C) {
- datasmall := []byte{0xe9, 0x38, 0xe9, 0x38}
- datalarge := []byte{0xe9, 0x38, 0xe9, 0x38, 0xe9, 0x38, 0xe9, 0x38}
-
- var expsmall uint64 = 0xe938e938
- var explarge uint64 = 0x0
-
- ressmall := BytesToNumber(datasmall)
- reslarge := BytesToNumber(datalarge)
-
- c.Assert(ressmall, checker.Equals, expsmall)
- c.Assert(reslarge, checker.Equals, explarge)
-
-}
-
-func (s *BytesSuite) TestReadVarInt(c *checker.C) {
- data8 := []byte{1, 2, 3, 4, 5, 6, 7, 8}
- data4 := []byte{1, 2, 3, 4}
- data2 := []byte{1, 2}
- data1 := []byte{1}
-
- exp8 := uint64(72623859790382856)
- exp4 := uint64(16909060)
- exp2 := uint64(258)
- exp1 := uint64(1)
-
- res8 := ReadVarInt(data8)
- res4 := ReadVarInt(data4)
- res2 := ReadVarInt(data2)
- res1 := ReadVarInt(data1)
-
- c.Assert(res8, checker.Equals, exp8)
- c.Assert(res4, checker.Equals, exp4)
- c.Assert(res2, checker.Equals, exp2)
- c.Assert(res1, checker.Equals, exp1)
-}
-
func (s *BytesSuite) TestCopyBytes(c *checker.C) {
data1 := []byte{1, 2, 3, 4}
exp1 := []byte{1, 2, 3, 4}
@@ -95,22 +47,6 @@ func (s *BytesSuite) TestIsHex(c *checker.C) {
}
-func (s *BytesSuite) TestParseDataString(c *checker.C) {
- res1 := ParseData("hello", "world", "0x0106")
- data := "68656c6c6f000000000000000000000000000000000000000000000000000000776f726c640000000000000000000000000000000000000000000000000000000106000000000000000000000000000000000000000000000000000000000000"
- exp1 := Hex2Bytes(data)
- c.Assert(res1, checker.DeepEquals, exp1)
-}
-
-func (s *BytesSuite) TestParseDataBytes(c *checker.C) {
- data1 := []byte{232, 212, 165, 16, 0}
- exp1 := []byte{0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 232, 212, 165, 16, 0}
-
- res1 := ParseData(data1)
- c.Assert(res1, checker.DeepEquals, exp1)
-
-}
-
func (s *BytesSuite) TestLeftPadBytes(c *checker.C) {
val1 := []byte{1, 2, 3, 4}
exp1 := []byte{0, 0, 0, 0, 1, 2, 3, 4}
@@ -122,28 +58,6 @@ func (s *BytesSuite) TestLeftPadBytes(c *checker.C) {
c.Assert(res2, checker.DeepEquals, val1)
}
-func (s *BytesSuite) TestFormatData(c *checker.C) {
- data1 := ""
- data2 := "0xa9e67e00"
- data3 := "a9e67e"
- data4 := "\"a9e67e00\""
-
- // exp1 := []byte{}
- exp2 := []byte{00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 0xa9, 0xe6, 0x7e, 00}
- exp3 := []byte{00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00}
- exp4 := []byte{0x61, 0x39, 0x65, 0x36, 0x37, 0x65, 0x30, 0x30, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00}
-
- res1 := FormatData(data1)
- res2 := FormatData(data2)
- res3 := FormatData(data3)
- res4 := FormatData(data4)
-
- c.Assert(res1, checker.IsNil)
- c.Assert(res2, checker.DeepEquals, exp2)
- c.Assert(res3, checker.DeepEquals, exp3)
- c.Assert(res4, checker.DeepEquals, exp4)
-}
-
func (s *BytesSuite) TestRightPadBytes(c *checker.C) {
val := []byte{1, 2, 3, 4}
exp := []byte{1, 2, 3, 4, 0, 0, 0, 0}
@@ -155,28 +69,6 @@ func (s *BytesSuite) TestRightPadBytes(c *checker.C) {
c.Assert(resshrt, checker.DeepEquals, val)
}
-func (s *BytesSuite) TestLeftPadString(c *checker.C) {
- val := "test"
- exp := "\x30\x30\x30\x30" + val
-
- resstd := LeftPadString(val, 8)
- resshrt := LeftPadString(val, 2)
-
- c.Assert(resstd, checker.Equals, exp)
- c.Assert(resshrt, checker.Equals, val)
-}
-
-func (s *BytesSuite) TestRightPadString(c *checker.C) {
- val := "test"
- exp := val + "\x30\x30\x30\x30"
-
- resstd := RightPadString(val, 8)
- resshrt := RightPadString(val, 2)
-
- c.Assert(resstd, checker.Equals, exp)
- c.Assert(resshrt, checker.Equals, val)
-}
-
func TestFromHex(t *testing.T) {
input := "0x01"
expected := []byte{1}
diff --git a/common/icap.go b/common/icap.go
deleted file mode 100644
index a36e669b3..000000000
--- a/common/icap.go
+++ /dev/null
@@ -1,190 +0,0 @@
-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-// Spec at https://github.com/ethereum/wiki/wiki/ICAP:-Inter-exchange-Client-Address-Protocol
-
-package common
-
-import (
- "errors"
- "math/big"
- "strconv"
- "strings"
-)
-
-var (
- Base36Chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ"
- ICAPLengthError = errors.New("Invalid ICAP length")
- ICAPEncodingError = errors.New("Invalid ICAP encoding")
- ICAPChecksumError = errors.New("Invalid ICAP checksum")
- ICAPCountryCodeError = errors.New("Invalid ICAP country code")
- ICAPAssetIdentError = errors.New("Invalid ICAP asset identifier")
- ICAPInstCodeError = errors.New("Invalid ICAP institution code")
- ICAPClientIdentError = errors.New("Invalid ICAP client identifier")
-)
-
-func ICAPToAddress(s string) (Address, error) {
- switch len(s) {
- case 35: // "XE" + 2 digit checksum + 31 base-36 chars of address
- return parseICAP(s)
- case 34: // "XE" + 2 digit checksum + 30 base-36 chars of address
- return parseICAP(s)
- case 20: // "XE" + 2 digit checksum + 3-char asset identifier +
- // 4-char institution identifier + 9-char institution client identifier
- return parseIndirectICAP(s)
- default:
- return Address{}, ICAPLengthError
- }
-}
-
-func parseICAP(s string) (Address, error) {
- if !strings.HasPrefix(s, "XE") {
- return Address{}, ICAPCountryCodeError
- }
- if err := validCheckSum(s); err != nil {
- return Address{}, err
- }
- // checksum is ISO13616, Ethereum address is base-36
- bigAddr, _ := new(big.Int).SetString(s[4:], 36)
- return BigToAddress(bigAddr), nil
-}
-
-func parseIndirectICAP(s string) (Address, error) {
- if !strings.HasPrefix(s, "XE") {
- return Address{}, ICAPCountryCodeError
- }
- if s[4:7] != "ETH" {
- return Address{}, ICAPAssetIdentError
- }
- if err := validCheckSum(s); err != nil {
- return Address{}, err
- }
- // TODO: integrate with ICAP namereg
- return Address{}, errors.New("not implemented")
-}
-
-func AddressToICAP(a Address) (string, error) {
- enc := base36Encode(a.Big())
- // zero padd encoded address to Direct ICAP length if needed
- if len(enc) < 30 {
- enc = join(strings.Repeat("0", 30-len(enc)), enc)
- }
- icap := join("XE", checkDigits(enc), enc)
- return icap, nil
-}
-
-// TODO: integrate with ICAP namereg when it's available
-func AddressToIndirectICAP(a Address, instCode string) (string, error) {
- // return addressToIndirectICAP(a, instCode)
- return "", errors.New("not implemented")
-}
-
-func addressToIndirectICAP(a Address, instCode string) (string, error) {
- // TODO: add addressToClientIdent which grabs client ident from ICAP namereg
- //clientIdent := addressToClientIdent(a)
- clientIdent := "todo"
- return clientIdentToIndirectICAP(instCode, clientIdent)
-}
-
-func clientIdentToIndirectICAP(instCode, clientIdent string) (string, error) {
- if len(instCode) != 4 || !validBase36(instCode) {
- return "", ICAPInstCodeError
- }
- if len(clientIdent) != 9 || !validBase36(instCode) {
- return "", ICAPClientIdentError
- }
-
- // currently ETH is only valid asset identifier
- s := join("ETH", instCode, clientIdent)
- return join("XE", checkDigits(s), s), nil
-}
-
-// https://en.wikipedia.org/wiki/International_Bank_Account_Number#Validating_the_IBAN
-func validCheckSum(s string) error {
- s = join(s[4:], s[:4])
- expanded, err := iso13616Expand(s)
- if err != nil {
- return err
- }
- checkSumNum, _ := new(big.Int).SetString(expanded, 10)
- if checkSumNum.Mod(checkSumNum, Big97).Cmp(Big1) != 0 {
- return ICAPChecksumError
- }
- return nil
-}
-
-func checkDigits(s string) string {
- expanded, _ := iso13616Expand(strings.Join([]string{s, "XE00"}, ""))
- num, _ := new(big.Int).SetString(expanded, 10)
- num.Sub(Big98, num.Mod(num, Big97))
-
- checkDigits := num.String()
- // zero padd checksum
- if len(checkDigits) == 1 {
- checkDigits = join("0", checkDigits)
- }
- return checkDigits
-}
-
-// not base-36, but expansion to decimal literal: A = 10, B = 11, ... Z = 35
-func iso13616Expand(s string) (string, error) {
- var parts []string
- if !validBase36(s) {
- return "", ICAPEncodingError
- }
- for _, c := range s {
- i := uint64(c)
- if i >= 65 {
- parts = append(parts, strconv.FormatUint(uint64(c)-55, 10))
- } else {
- parts = append(parts, string(c))
- }
- }
- return join(parts...), nil
-}
-
-func base36Encode(i *big.Int) string {
- var chars []rune
- x := new(big.Int)
- for {
- x.Mod(i, Big36)
- chars = append(chars, rune(Base36Chars[x.Uint64()]))
- i.Div(i, Big36)
- if i.Cmp(Big0) == 0 {
- break
- }
- }
- // reverse slice
- for i, j := 0, len(chars)-1; i < j; i, j = i+1, j-1 {
- chars[i], chars[j] = chars[j], chars[i]
- }
- return string(chars)
-}
-
-func validBase36(s string) bool {
- for _, c := range s {
- i := uint64(c)
- // 0-9 or A-Z
- if i < 48 || (i > 57 && i < 65) || i > 90 {
- return false
- }
- }
- return true
-}
-
-func join(s ...string) string {
- return strings.Join(s, "")
-}
diff --git a/common/icap_test.go b/common/icap_test.go
deleted file mode 100644
index 6306686d1..000000000
--- a/common/icap_test.go
+++ /dev/null
@@ -1,91 +0,0 @@
-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package common
-
-import "testing"
-
-/* More test vectors:
-https://github.com/ethereum/web3.js/blob/master/test/iban.fromAddress.js
-https://github.com/ethereum/web3.js/blob/master/test/iban.toAddress.js
-https://github.com/ethereum/web3.js/blob/master/test/iban.isValid.js
-https://github.com/ethereum/libethereum/blob/develop/test/libethcore/icap.cpp
-*/
-
-type icapTest struct {
- name string
- addr string
- icap string
-}
-
-var icapOKTests = []icapTest{
- {"Direct1", "0x52dc504a422f0e2a9e7632a34a50f1a82f8224c7", "XE499OG1EH8ZZI0KXC6N83EKGT1BM97P2O7"},
- {"Direct2", "0x11c5496aee77c1ba1f0854206a26dda82a81d6d8", "XE1222Q908LN1QBBU6XUQSO1OHWJIOS46OO"},
- {"DirectZeroPrefix", "0x00c5496aee77c1ba1f0854206a26dda82a81d6d8", "XE7338O073KYGTWWZN0F2WZ0R8PX5ZPPZS"},
- {"DirectDoubleZeroPrefix", "0x0000a5327eab78357cbf2ae8f3d49fd9d90c7d22", "XE0600DQK33XDTYUCRI0KYM5ELAKXDWWF6"},
-}
-
-var icapInvalidTests = []icapTest{
- {"DirectInvalidCheckSum", "", "XE7438O073KYGTWWZN0F2WZ0R8PX5ZPPZS"},
- {"DirectInvalidCountryCode", "", "XD7338O073KYGTWWZN0F2WZ0R8PX5ZPPZS"},
- {"DirectInvalidLength36", "", "XE499OG1EH8ZZI0KXC6N83EKGT1BM97P2O77"},
- {"DirectInvalidLength33", "", "XE499OG1EH8ZZI0KXC6N83EKGT1BM97P2"},
-
- {"IndirectInvalidCheckSum", "", "XE35ETHXREGGOPHERSSS"},
- {"IndirectInvalidAssetIdentifier", "", "XE34ETHXREGGOPHERSSS"},
- {"IndirectInvalidLength19", "", "XE34ETHXREGGOPHERSS"},
- {"IndirectInvalidLength21", "", "XE34ETHXREGGOPHERSSSS"},
-}
-
-func TestICAPOK(t *testing.T) {
- for _, test := range icapOKTests {
- decodeEncodeTest(HexToAddress(test.addr), test.icap, t)
- }
-}
-
-func TestICAPInvalid(t *testing.T) {
- for _, test := range icapInvalidTests {
- failedDecodingTest(test.icap, t)
- }
-}
-
-func decodeEncodeTest(addr0 Address, icap0 string, t *testing.T) {
- icap1, err := AddressToICAP(addr0)
- if err != nil {
- t.Errorf("ICAP encoding failed: %s", err)
- }
- if icap1 != icap0 {
- t.Errorf("ICAP mismatch: have: %s want: %s", icap1, icap0)
- }
-
- addr1, err := ICAPToAddress(icap0)
- if err != nil {
- t.Errorf("ICAP decoding failed: %s", err)
- }
- if addr1 != addr0 {
- t.Errorf("Address mismatch: have: %x want: %x", addr1, addr0)
- }
-}
-
-func failedDecodingTest(icap string, t *testing.T) {
- addr, err := ICAPToAddress(icap)
- if err == nil {
- t.Errorf("Expected ICAP decoding to fail.")
- }
- if addr != (Address{}) {
- t.Errorf("Expected empty Address on failed ICAP decoding.")
- }
-}
diff --git a/common/list.go b/common/list.go
deleted file mode 100644
index 07b2f17f5..000000000
--- a/common/list.go
+++ /dev/null
@@ -1,97 +0,0 @@
-// Copyright 2014 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package common
-
-import (
- "encoding/json"
- "reflect"
- "sync"
-)
-
-// The list type is an anonymous slice handler which can be used
-// for containing any slice type to use in an environment which
-// does not support slice types (e.g., JavaScript, QML)
-type List struct {
- mut sync.Mutex
- val interface{}
- list reflect.Value
- Length int
-}
-
-// Initialise a new list. Panics if non-slice type is given.
-func NewList(t interface{}) *List {
- list := reflect.ValueOf(t)
- if list.Kind() != reflect.Slice {
- panic("list container initialized with a non-slice type")
- }
-
- return &List{sync.Mutex{}, t, list, list.Len()}
-}
-
-func EmptyList() *List {
- return NewList([]interface{}{})
-}
-
-// Get N element from the embedded slice. Returns nil if OOB.
-func (self *List) Get(i int) interface{} {
- if self.list.Len() > i {
- self.mut.Lock()
- defer self.mut.Unlock()
-
- i := self.list.Index(i).Interface()
-
- return i
- }
-
- return nil
-}
-
-func (self *List) GetAsJson(i int) interface{} {
- e := self.Get(i)
-
- r, _ := json.Marshal(e)
-
- return string(r)
-}
-
-// Appends value at the end of the slice. Panics when incompatible value
-// is given.
-func (self *List) Append(v interface{}) {
- self.mut.Lock()
- defer self.mut.Unlock()
-
- self.list = reflect.Append(self.list, reflect.ValueOf(v))
- self.Length = self.list.Len()
-}
-
-// Returns the underlying slice as interface.
-func (self *List) Interface() interface{} {
- return self.list.Interface()
-}
-
-// For JavaScript <3
-func (self *List) ToJSON() string {
- // make(T, 0) != nil
- list := make([]interface{}, 0)
- for i := 0; i < self.Length; i++ {
- list = append(list, self.Get(i))
- }
-
- data, _ := json.Marshal(list)
-
- return string(data)
-}
diff --git a/common/math/big.go b/common/math/big.go
new file mode 100644
index 000000000..c0508c102
--- /dev/null
+++ b/common/math/big.go
@@ -0,0 +1,143 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+// Package math provides integer math utilities.
+package math
+
+import (
+ "math/big"
+)
+
+var (
+ tt255 = BigPow(2, 255)
+ tt256 = BigPow(2, 256)
+ tt256m1 = new(big.Int).Sub(tt256, big.NewInt(1))
+ MaxBig256 = new(big.Int).Set(tt256m1)
+)
+
+// ParseBig256 parses s as a 256 bit integer in decimal or hexadecimal syntax.
+// Leading zeros are accepted. The empty string parses as zero.
+func ParseBig256(s string) (*big.Int, bool) {
+ if s == "" {
+ return new(big.Int), true
+ }
+ var bigint *big.Int
+ var ok bool
+ if len(s) >= 2 && (s[:2] == "0x" || s[:2] == "0X") {
+ bigint, ok = new(big.Int).SetString(s[2:], 16)
+ } else {
+ bigint, ok = new(big.Int).SetString(s, 10)
+ }
+ if ok && bigint.BitLen() > 256 {
+ bigint, ok = nil, false
+ }
+ return bigint, ok
+}
+
+// MustParseBig parses s as a 256 bit big integer and panics if the string is invalid.
+func MustParseBig256(s string) *big.Int {
+ v, ok := ParseBig256(s)
+ if !ok {
+ panic("invalid 256 bit integer: " + s)
+ }
+ return v
+}
+
+// BigPow returns a ** b as a big integer.
+func BigPow(a, b int64) *big.Int {
+ r := big.NewInt(a)
+ return r.Exp(r, big.NewInt(b), nil)
+}
+
+// BigMax returns the larger of x or y.
+func BigMax(x, y *big.Int) *big.Int {
+ if x.Cmp(y) < 0 {
+ return y
+ }
+ return x
+}
+
+// BigMin returns the smaller of x or y.
+func BigMin(x, y *big.Int) *big.Int {
+ if x.Cmp(y) > 0 {
+ return y
+ }
+ return x
+}
+
+// FirstBitSet returns the index of the first 1 bit in v, counting from LSB.
+func FirstBitSet(v *big.Int) int {
+ for i := 0; i < v.BitLen(); i++ {
+ if v.Bit(i) > 0 {
+ return i
+ }
+ }
+ return v.BitLen()
+}
+
+// PaddedBigBytes encodes a big integer as a big-endian byte slice. The length
+// of the slice is at least n bytes.
+func PaddedBigBytes(bigint *big.Int, n int) []byte {
+ bytes := bigint.Bytes()
+ if len(bytes) >= n {
+ return bytes
+ }
+ ret := make([]byte, n)
+ return append(ret[:len(ret)-len(bytes)], bytes...)
+}
+
+// U256 encodes as a 256 bit two's complement number. This operation is destructive.
+func U256(x *big.Int) *big.Int {
+ return x.And(x, tt256m1)
+}
+
+// S256 interprets x as a two's complement number.
+// x must not exceed 256 bits (the result is undefined if it does) and is not modified.
+//
+// S256(0) = 0
+// S256(1) = 1
+// S256(2**255) = -2**255
+// S256(2**256-1) = -1
+func S256(x *big.Int) *big.Int {
+ if x.Cmp(tt255) < 0 {
+ return x
+ } else {
+ return new(big.Int).Sub(x, tt256)
+ }
+}
+
+// wordSize is the size number of bits in a big.Word.
+const wordSize = 32 << (uint64(^big.Word(0)) >> 63)
+
+// Exp implements exponentiation by squaring.
+// Exp returns a newly-allocated big integer and does not change
+// base or exponent. The result is truncated to 256 bits.
+//
+// Courtesy @karalabe and @chfast
+func Exp(base, exponent *big.Int) *big.Int {
+ result := big.NewInt(1)
+
+ for _, word := range exponent.Bits() {
+ for i := 0; i < wordSize; i++ {
+ if word&1 == 1 {
+ U256(result.Mul(result, base))
+ }
+ U256(base.Mul(base, base))
+ word >>= 1
+ }
+ }
+ return result
+}
diff --git a/common/math/big_test.go b/common/math/big_test.go
new file mode 100644
index 000000000..a0f48a8eb
--- /dev/null
+++ b/common/math/big_test.go
@@ -0,0 +1,196 @@
+// Copyright 2014 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
+package math
+
+import (
+ "bytes"
+ "math/big"
+ "testing"
+)
+
+func TestParseBig256(t *testing.T) {
+ tests := []struct {
+ input string
+ num *big.Int
+ ok bool
+ }{
+ {"", big.NewInt(0), true},
+ {"0", big.NewInt(0), true},
+ {"0x0", big.NewInt(0), true},
+ {"12345678", big.NewInt(12345678), true},
+ {"0x12345678", big.NewInt(0x12345678), true},
+ {"0X12345678", big.NewInt(0x12345678), true},
+ // Tests for leading zero behaviour:
+ {"0123456789", big.NewInt(123456789), true}, // note: not octal
+ {"00", big.NewInt(0), true},
+ {"0x00", big.NewInt(0), true},
+ {"0x012345678abc", big.NewInt(0x12345678abc), true},
+ // Invalid syntax:
+ {"abcdef", nil, false},
+ {"0xgg", nil, false},
+ // Larger than 256 bits:
+ {"115792089237316195423570985008687907853269984665640564039457584007913129639936", nil, false},
+ }
+ for _, test := range tests {
+ num, ok := ParseBig256(test.input)
+ if ok != test.ok {
+ t.Errorf("ParseBig(%q) -> ok = %t, want %t", test.input, ok, test.ok)
+ continue
+ }
+ if num != nil && test.num != nil && num.Cmp(test.num) != 0 {
+ t.Errorf("ParseBig(%q) -> %d, want %d", test.input, num, test.num)
+ }
+ }
+}
+
+func TestMustParseBig256(t *testing.T) {
+ defer func() {
+ if recover() == nil {
+ t.Error("MustParseBig should've panicked")
+ }
+ }()
+ MustParseBig256("ggg")
+}
+
+func TestBigMax(t *testing.T) {
+ a := big.NewInt(10)
+ b := big.NewInt(5)
+
+ max1 := BigMax(a, b)
+ if max1 != a {
+ t.Errorf("Expected %d got %d", a, max1)
+ }
+
+ max2 := BigMax(b, a)
+ if max2 != a {
+ t.Errorf("Expected %d got %d", a, max2)
+ }
+}
+
+func TestBigMin(t *testing.T) {
+ a := big.NewInt(10)
+ b := big.NewInt(5)
+
+ min1 := BigMin(a, b)
+ if min1 != b {
+ t.Errorf("Expected %d got %d", b, min1)
+ }
+
+ min2 := BigMin(b, a)
+ if min2 != b {
+ t.Errorf("Expected %d got %d", b, min2)
+ }
+}
+
+func TestFirstBigSet(t *testing.T) {
+ tests := []struct {
+ num *big.Int
+ ix int
+ }{
+ {big.NewInt(0), 0},
+ {big.NewInt(1), 0},
+ {big.NewInt(2), 1},
+ {big.NewInt(0x100), 8},
+ }
+ for _, test := range tests {
+ if ix := FirstBitSet(test.num); ix != test.ix {
+ t.Errorf("FirstBitSet(b%b) = %d, want %d", test.num, ix, test.ix)
+ }
+ }
+}
+
+func TestPaddedBigBytes(t *testing.T) {
+ tests := []struct {
+ num *big.Int
+ n int
+ result []byte
+ }{
+ {num: big.NewInt(0), n: 4, result: []byte{0, 0, 0, 0}},
+ {num: big.NewInt(1), n: 4, result: []byte{0, 0, 0, 1}},
+ {num: big.NewInt(512), n: 4, result: []byte{0, 0, 2, 0}},
+ {num: BigPow(2, 32), n: 4, result: []byte{1, 0, 0, 0, 0}},
+ }
+ for _, test := range tests {
+ if result := PaddedBigBytes(test.num, test.n); !bytes.Equal(result, test.result) {
+ t.Errorf("PaddedBigBytes(%d, %d) = %v, want %v", test.num, test.n, result, test.result)
+ }
+ }
+}
+
+func TestU256(t *testing.T) {
+ tests := []struct{ x, y *big.Int }{
+ {x: big.NewInt(0), y: big.NewInt(0)},
+ {x: big.NewInt(1), y: big.NewInt(1)},
+ {x: BigPow(2, 255), y: BigPow(2, 255)},
+ {x: BigPow(2, 256), y: big.NewInt(0)},
+ {x: new(big.Int).Add(BigPow(2, 256), big.NewInt(1)), y: big.NewInt(1)},
+ // negative values
+ {x: big.NewInt(-1), y: new(big.Int).Sub(BigPow(2, 256), big.NewInt(1))},
+ {x: big.NewInt(-2), y: new(big.Int).Sub(BigPow(2, 256), big.NewInt(2))},
+ {x: BigPow(2, -255), y: big.NewInt(1)},
+ }
+ for _, test := range tests {
+ if y := U256(new(big.Int).Set(test.x)); y.Cmp(test.y) != 0 {
+ t.Errorf("U256(%x) = %x, want %x", test.x, y, test.y)
+ }
+ }
+}
+
+func TestS256(t *testing.T) {
+ tests := []struct{ x, y *big.Int }{
+ {x: big.NewInt(0), y: big.NewInt(0)},
+ {x: big.NewInt(1), y: big.NewInt(1)},
+ {x: big.NewInt(2), y: big.NewInt(2)},
+ {
+ x: new(big.Int).Sub(BigPow(2, 255), big.NewInt(1)),
+ y: new(big.Int).Sub(BigPow(2, 255), big.NewInt(1)),
+ },
+ {
+ x: BigPow(2, 255),
+ y: new(big.Int).Neg(BigPow(2, 255)),
+ },
+ {
+ x: new(big.Int).Sub(BigPow(2, 256), big.NewInt(1)),
+ y: big.NewInt(-1),
+ },
+ {
+ x: new(big.Int).Sub(BigPow(2, 256), big.NewInt(2)),
+ y: big.NewInt(-2),
+ },
+ }
+ for _, test := range tests {
+ if y := S256(test.x); y.Cmp(test.y) != 0 {
+ t.Errorf("S256(%x) = %x, want %x", test.x, y, test.y)
+ }
+ }
+}
+
+func TestExp(t *testing.T) {
+ tests := []struct{ base, exponent, result *big.Int }{
+ {base: big.NewInt(0), exponent: big.NewInt(0), result: big.NewInt(1)},
+ {base: big.NewInt(1), exponent: big.NewInt(0), result: big.NewInt(1)},
+ {base: big.NewInt(1), exponent: big.NewInt(1), result: big.NewInt(1)},
+ {base: big.NewInt(1), exponent: big.NewInt(2), result: big.NewInt(1)},
+ {base: big.NewInt(3), exponent: big.NewInt(144), result: MustParseBig256("507528786056415600719754159741696356908742250191663887263627442114881")},
+ {base: big.NewInt(2), exponent: big.NewInt(255), result: MustParseBig256("57896044618658097711785492504343953926634992332820282019728792003956564819968")},
+ }
+ for _, test := range tests {
+ if result := Exp(test.base, test.exponent); result.Cmp(test.result) != 0 {
+ t.Errorf("Exp(%d, %d) = %d, want %d", test.base, test.exponent, result, test.result)
+ }
+ }
+}
diff --git a/common/math/dist.go b/common/math/dist.go
deleted file mode 100644
index 913fbfbd4..000000000
--- a/common/math/dist.go
+++ /dev/null
@@ -1,96 +0,0 @@
-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package math
-
-import (
- "math/big"
- "sort"
-
- "github.com/ethereum/go-ethereum/common"
-)
-
-type Summer interface {
- Sum(i int) *big.Int
- Len() int
-}
-
-func Sum(slice Summer) (sum *big.Int) {
- sum = new(big.Int)
-
- for i := 0; i < slice.Len(); i++ {
- sum.Add(sum, slice.Sum(i))
- }
- return
-}
-
-type Vector struct {
- Gas, Price *big.Int
-}
-
-type VectorsBy func(v1, v2 Vector) bool
-
-func (self VectorsBy) Sort(vectors []Vector) {
- bs := vectorSorter{
- vectors: vectors,
- by: self,
- }
- sort.Sort(bs)
-}
-
-type vectorSorter struct {
- vectors []Vector
- by func(v1, v2 Vector) bool
-}
-
-func (v vectorSorter) Len() int { return len(v.vectors) }
-func (v vectorSorter) Less(i, j int) bool { return v.by(v.vectors[i], v.vectors[j]) }
-func (v vectorSorter) Swap(i, j int) { v.vectors[i], v.vectors[j] = v.vectors[j], v.vectors[i] }
-
-func PriceSort(v1, v2 Vector) bool { return v1.Price.Cmp(v2.Price) < 0 }
-func GasSort(v1, v2 Vector) bool { return v1.Gas.Cmp(v2.Gas) < 0 }
-
-type vectorSummer struct {
- vectors []Vector
- by func(v Vector) *big.Int
-}
-
-type VectorSum func(v Vector) *big.Int
-
-func (v VectorSum) Sum(vectors []Vector) *big.Int {
- vs := vectorSummer{
- vectors: vectors,
- by: v,
- }
- return Sum(vs)
-}
-
-func (v vectorSummer) Len() int { return len(v.vectors) }
-func (v vectorSummer) Sum(i int) *big.Int { return v.by(v.vectors[i]) }
-
-func GasSum(v Vector) *big.Int { return v.Gas }
-
-var etherInWei = new(big.Rat).SetInt(common.String2Big("1000000000000000000"))
-
-func GasPrice(bp, gl, ep *big.Int) *big.Int {
- BP := new(big.Rat).SetInt(bp)
- GL := new(big.Rat).SetInt(gl)
- EP := new(big.Rat).SetInt(ep)
- GP := new(big.Rat).Quo(BP, GL)
- GP = GP.Quo(GP, EP)
-
- return GP.Mul(GP, etherInWei).Num()
-}
diff --git a/common/math/dist_test.go b/common/math/dist_test.go
deleted file mode 100644
index f5857b6f8..000000000
--- a/common/math/dist_test.go
+++ /dev/null
@@ -1,82 +0,0 @@
-// Copyright 2015 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package math
-
-import (
- "fmt"
- "math/big"
- "testing"
-)
-
-type summer struct {
- numbers []*big.Int
-}
-
-func (s summer) Len() int { return len(s.numbers) }
-func (s summer) Sum(i int) *big.Int {
- return s.numbers[i]
-}
-
-func TestSum(t *testing.T) {
- summer := summer{numbers: []*big.Int{big.NewInt(1), big.NewInt(2), big.NewInt(3)}}
- sum := Sum(summer)
- if sum.Cmp(big.NewInt(6)) != 0 {
- t.Errorf("got sum = %d, want 6", sum)
- }
-}
-
-func TestDist(t *testing.T) {
- var vectors = []Vector{
- {big.NewInt(1000), big.NewInt(1234)},
- {big.NewInt(500), big.NewInt(10023)},
- {big.NewInt(1034), big.NewInt(1987)},
- {big.NewInt(1034), big.NewInt(1987)},
- {big.NewInt(8983), big.NewInt(1977)},
- {big.NewInt(98382), big.NewInt(1887)},
- {big.NewInt(12398), big.NewInt(1287)},
- {big.NewInt(12398), big.NewInt(1487)},
- {big.NewInt(12398), big.NewInt(1987)},
- {big.NewInt(12398), big.NewInt(128)},
- {big.NewInt(12398), big.NewInt(1987)},
- {big.NewInt(1398), big.NewInt(187)},
- {big.NewInt(12328), big.NewInt(1927)},
- {big.NewInt(12398), big.NewInt(1987)},
- {big.NewInt(22398), big.NewInt(1287)},
- {big.NewInt(1370), big.NewInt(1981)},
- {big.NewInt(12398), big.NewInt(1957)},
- {big.NewInt(42198), big.NewInt(1987)},
- }
-
- VectorsBy(GasSort).Sort(vectors)
- fmt.Println(vectors)
-
- BP := big.NewInt(15)
- GL := big.NewInt(1000000)
- EP := big.NewInt(100)
- fmt.Println("BP", BP, "GL", GL, "EP", EP)
- GP := GasPrice(BP, GL, EP)
- fmt.Println("GP =", GP, "Wei per GU")
-
- S := len(vectors) / 4
- fmt.Println("L", len(vectors), "S", S)
- for i := 1; i <= S*4; i += S {
- fmt.Printf("T%d = %v\n", i, vectors[i])
- }
-
- g := VectorSum(GasSum).Sum(vectors)
- fmt.Printf("G = ∑g* (%v)\n", g)
-}
diff --git a/common/math/exp.go b/common/math/exp.go
deleted file mode 100644
index 113b76b39..000000000
--- a/common/math/exp.go
+++ /dev/null
@@ -1,47 +0,0 @@
-// Copyright 2016 The go-ethereum Authors
-// This file is part of the go-ethereum library.
-//
-// The go-ethereum library is free software: you can redistribute it and/or modify
-// it under the terms of the GNU Lesser General Public License as published by
-// the Free Software Foundation, either version 3 of the License, or
-// (at your option) any later version.
-//
-// The go-ethereum library is distributed in the hope that it will be useful,
-// but WITHOUT ANY WARRANTY; without even the implied warranty of
-// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-// GNU Lesser General Public License for more details.
-//
-// You should have received a copy of the GNU Lesser General Public License
-// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
-
-package math
-
-import (
- "math/big"
-
- "github.com/ethereum/go-ethereum/common"
-)
-
-// wordSize is the size number of bits in a big.Int Word.
-const wordSize = 32 << (uint64(^big.Word(0)) >> 63)
-
-// Exp implement exponentiation by squaring algorithm.
-//
-// Exp return a new variable; base and exponent must
-// not be changed under any circumstance.
-//
-// Courtesy @karalabe and @chfast
-func Exp(base, exponent *big.Int) *big.Int {
- result := big.NewInt(1)
-
- for _, word := range exponent.Bits() {
- for i := 0; i < wordSize; i++ {
- if word&1 == 1 {
- common.U256(result.Mul(result, base))
- }
- common.U256(base.Mul(base, base))
- word >>= 1
- }
- }
- return result
-}
diff --git a/common/math/integer.go b/common/math/integer.go
index 1689b6586..a3eeee27e 100644
--- a/common/math/integer.go
+++ b/common/math/integer.go
@@ -1,10 +1,63 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
package math
-import gmath "math"
+import "strconv"
+
+const (
+ // Integer limit values.
+ MaxInt8 = 1<<7 - 1
+ MinInt8 = -1 << 7
+ MaxInt16 = 1<<15 - 1
+ MinInt16 = -1 << 15
+ MaxInt32 = 1<<31 - 1
+ MinInt32 = -1 << 31
+ MaxInt64 = 1<<63 - 1
+ MinInt64 = -1 << 63
+ MaxUint8 = 1<<8 - 1
+ MaxUint16 = 1<<16 - 1
+ MaxUint32 = 1<<32 - 1
+ MaxUint64 = 1<<64 - 1
+)
+
+// ParseUint64 parses s as an integer in decimal or hexadecimal syntax.
+// Leading zeros are accepted. The empty string parses as zero.
+func ParseUint64(s string) (uint64, bool) {
+ if s == "" {
+ return 0, true
+ }
+ if len(s) >= 2 && (s[:2] == "0x" || s[:2] == "0X") {
+ v, err := strconv.ParseUint(s[2:], 16, 64)
+ return v, err == nil
+ }
+ v, err := strconv.ParseUint(s, 10, 64)
+ return v, err == nil
+}
+
+// MustParseUint64 parses s as an integer and panics if the string is invalid.
+func MustParseUint64(s string) uint64 {
+ v, ok := ParseUint64(s)
+ if !ok {
+ panic("invalid unsigned 64 bit integer: " + s)
+ }
+ return v
+}
-/*
- * NOTE: The following methods need to be optimised using either bit checking or asm
- */
+// NOTE: The following methods need to be optimised using either bit checking or asm
// SafeSub returns subtraction result and whether overflow occurred.
func SafeSub(x, y uint64) (uint64, bool) {
@@ -13,7 +66,7 @@ func SafeSub(x, y uint64) (uint64, bool) {
// SafeAdd returns the result and whether overflow occurred.
func SafeAdd(x, y uint64) (uint64, bool) {
- return x + y, y > gmath.MaxUint64-x
+ return x + y, y > MaxUint64-x
}
// SafeMul returns multiplication result and whether overflow occurred.
@@ -21,5 +74,5 @@ func SafeMul(x, y uint64) (uint64, bool) {
if x == 0 || y == 0 {
return 0, false
}
- return x * y, y > gmath.MaxUint64/x
+ return x * y, y > MaxUint64/x
}
diff --git a/common/math/integer_test.go b/common/math/integer_test.go
index 198114e5e..05bba221f 100644
--- a/common/math/integer_test.go
+++ b/common/math/integer_test.go
@@ -1,7 +1,22 @@
+// Copyright 2017 The go-ethereum Authors
+// This file is part of the go-ethereum library.
+//
+// The go-ethereum library is free software: you can redistribute it and/or modify
+// it under the terms of the GNU Lesser General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// The go-ethereum library is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public License
+// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
+
package math
import (
- gmath "math"
"testing"
)
@@ -21,17 +36,18 @@ func TestOverflow(t *testing.T) {
op operation
}{
// add operations
- {gmath.MaxUint64, 1, true, add},
- {gmath.MaxUint64 - 1, 1, false, add},
+ {MaxUint64, 1, true, add},
+ {MaxUint64 - 1, 1, false, add},
// sub operations
{0, 1, true, sub},
{0, 0, false, sub},
// mul operations
+ {0, 0, false, mul},
{10, 10, false, mul},
- {gmath.MaxUint64, 2, true, mul},
- {gmath.MaxUint64, 1, false, mul},
+ {MaxUint64, 2, true, mul},
+ {MaxUint64, 1, false, mul},
} {
var overflows bool
switch test.op {
@@ -48,3 +64,52 @@ func TestOverflow(t *testing.T) {
}
}
}
+
+func TestParseUint64(t *testing.T) {
+ tests := []struct {
+ input string
+ num uint64
+ ok bool
+ }{
+ {"", 0, true},
+ {"0", 0, true},
+ {"0x0", 0, true},
+ {"12345678", 12345678, true},
+ {"0x12345678", 0x12345678, true},
+ {"0X12345678", 0x12345678, true},
+ // Tests for leading zero behaviour:
+ {"0123456789", 123456789, true}, // note: not octal
+ {"0x00", 0, true},
+ {"0x012345678abc", 0x12345678abc, true},
+ // Invalid syntax:
+ {"abcdef", 0, false},
+ {"0xgg", 0, false},
+ // Doesn't fit into 64 bits:
+ {"18446744073709551617", 0, false},
+ }
+ for _, test := range tests {
+ num, ok := ParseUint64(test.input)
+ if ok != test.ok {
+ t.Errorf("ParseUint64(%q) -> ok = %t, want %t", test.input, ok, test.ok)
+ continue
+ }
+ if ok && num != test.num {
+ t.Errorf("ParseUint64(%q) -> %d, want %d", test.input, num, test.num)
+ }
+ }
+}
+
+func TestMustParseUint64(t *testing.T) {
+ if v := MustParseUint64("12345"); v != 12345 {
+ t.Errorf(`MustParseUint64("12345") = %d, want 12345`, v)
+ }
+}
+
+func TestMustParseUint64Panic(t *testing.T) {
+ defer func() {
+ if recover() == nil {
+ t.Error("MustParseBig should've panicked")
+ }
+ }()
+ MustParseUint64("ggg")
+}
diff --git a/common/size.go b/common/size.go
index 9653b3629..c5a0cb0f2 100644
--- a/common/size.go
+++ b/common/size.go
@@ -18,7 +18,6 @@ package common
import (
"fmt"
- "math/big"
)
type StorageSize float64
@@ -36,54 +35,3 @@ func (self StorageSize) String() string {
func (self StorageSize) Int64() int64 {
return int64(self)
}
-
-// The different number of units
-var (
- Douglas = BigPow(10, 42)
- Einstein = BigPow(10, 21)
- Ether = BigPow(10, 18)
- Finney = BigPow(10, 15)
- Szabo = BigPow(10, 12)
- Shannon = BigPow(10, 9)
- Babbage = BigPow(10, 6)
- Ada = BigPow(10, 3)
- Wei = big.NewInt(1)
-)
-
-//
-// Currency to string
-// Returns a string representing a human readable format
-func CurrencyToString(num *big.Int) string {
- var (
- fin *big.Int = num
- denom string = "Wei"
- )
-
- switch {
- case num.Cmp(Ether) >= 0:
- fin = new(big.Int).Div(num, Ether)
- denom = "Ether"
- case num.Cmp(Finney) >= 0:
- fin = new(big.Int).Div(num, Finney)
- denom = "Finney"
- case num.Cmp(Szabo) >= 0:
- fin = new(big.Int).Div(num, Szabo)
- denom = "Szabo"
- case num.Cmp(Shannon) >= 0:
- fin = new(big.Int).Div(num, Shannon)
- denom = "Shannon"
- case num.Cmp(Babbage) >= 0:
- fin = new(big.Int).Div(num, Babbage)
- denom = "Babbage"
- case num.Cmp(Ada) >= 0:
- fin = new(big.Int).Div(num, Ada)
- denom = "Ada"
- }
-
- // TODO add comment clarifying expected behavior
- if len(fin.String()) > 5 {
- return fmt.Sprintf("%sE%d %s", fin.String()[0:5], len(fin.String())-5, denom)
- }
-
- return fmt.Sprintf("%v %s", fin, denom)
-}
diff --git a/common/size_test.go b/common/size_test.go
index ce19cab69..f5b6c725e 100644
--- a/common/size_test.go
+++ b/common/size_test.go
@@ -17,43 +17,22 @@
package common
import (
- "math/big"
-
- checker "gopkg.in/check.v1"
+ "testing"
)
-type SizeSuite struct{}
-
-var _ = checker.Suite(&SizeSuite{})
-
-func (s *SizeSuite) TestStorageSizeString(c *checker.C) {
- data1 := 2381273
- data2 := 2192
- data3 := 12
-
- exp1 := "2.38 mB"
- exp2 := "2.19 kB"
- exp3 := "12.00 B"
-
- c.Assert(StorageSize(data1).String(), checker.Equals, exp1)
- c.Assert(StorageSize(data2).String(), checker.Equals, exp2)
- c.Assert(StorageSize(data3).String(), checker.Equals, exp3)
-}
-
-func (s *SizeSuite) TestCommon(c *checker.C) {
- ether := CurrencyToString(BigPow(10, 19))
- finney := CurrencyToString(BigPow(10, 16))
- szabo := CurrencyToString(BigPow(10, 13))
- shannon := CurrencyToString(BigPow(10, 10))
- babbage := CurrencyToString(BigPow(10, 7))
- ada := CurrencyToString(BigPow(10, 4))
- wei := CurrencyToString(big.NewInt(10))
-
- c.Assert(ether, checker.Equals, "10 Ether")
- c.Assert(finney, checker.Equals, "10 Finney")
- c.Assert(szabo, checker.Equals, "10 Szabo")
- c.Assert(shannon, checker.Equals, "10 Shannon")
- c.Assert(babbage, checker.Equals, "10 Babbage")
- c.Assert(ada, checker.Equals, "10 Ada")
- c.Assert(wei, checker.Equals, "10 Wei")
+func TestStorageSizeString(t *testing.T) {
+ tests := []struct {
+ size StorageSize
+ str string
+ }{
+ {2381273, "2.38 mB"},
+ {2192, "2.19 kB"},
+ {12, "12.00 B"},
+ }
+
+ for _, test := range tests {
+ if test.size.String() != test.str {
+ t.Errorf("%f: got %q, want %q", float64(test.size), test.size.String(), test.str)
+ }
+ }
}
diff --git a/common/types.go b/common/types.go
index 8a456e965..d38ea7306 100644
--- a/common/types.go
+++ b/common/types.go
@@ -52,7 +52,7 @@ func HexToHash(s string) Hash { return BytesToHash(FromHex(s)) }
// Get the string representation of the underlying hash
func (h Hash) Str() string { return string(h[:]) }
func (h Hash) Bytes() []byte { return h[:] }
-func (h Hash) Big() *big.Int { return Bytes2Big(h[:]) }
+func (h Hash) Big() *big.Int { return new(big.Int).SetBytes(h[:]) }
func (h Hash) Hex() string { return hexutil.Encode(h[:]) }
// UnmarshalJSON parses a hash in its hex from to a hash.
@@ -122,7 +122,7 @@ func IsHexAddress(s string) bool {
// Get the string representation of the underlying address
func (a Address) Str() string { return string(a[:]) }
func (a Address) Bytes() []byte { return a[:] }
-func (a Address) Big() *big.Int { return Bytes2Big(a[:]) }
+func (a Address) Big() *big.Int { return new(big.Int).SetBytes(a[:]) }
func (a Address) Hash() Hash { return BytesToHash(a[:]) }
func (a Address) Hex() string { return hexutil.Encode(a[:]) }
diff --git a/common/types_template.go b/common/types_template.go
index 8048f9cc3..9a8f29977 100644
--- a/common/types_template.go
+++ b/common/types_template.go
@@ -37,7 +37,7 @@ func HexTo_N_(s string) _N_ { return BytesTo_N_(FromHex(s)) }
// Get the string representation of the underlying hash
func (h _N_) Str() string { return string(h[:]) }
func (h _N_) Bytes() []byte { return h[:] }
-func (h _N_) Big() *big.Int { return Bytes2Big(h[:]) }
+func (h _N_) Big() *big.Int { return new(big.Int).SetBytes(h[:]) }
func (h _N_) Hex() string { return "0x" + Bytes2Hex(h[:]) }
// Sets the hash to the value of b. If b is larger than len(h) it will panic
generated by cgit (git 2.34.1) at 2024-11-12 17:21:41 +0800