mirror of https://github.com/status-im/op-geth.git
139 lines
2.5 KiB
Go
139 lines
2.5 KiB
Go
package ethchain
|
|
|
|
import (
|
|
"fmt"
|
|
_ "github.com/ethereum/eth-go/ethutil"
|
|
"math/big"
|
|
)
|
|
|
|
type OpType int
|
|
|
|
const (
|
|
tNorm = iota
|
|
tData
|
|
tExtro
|
|
tCrypto
|
|
)
|
|
|
|
type TxCallback func(opType OpType) bool
|
|
|
|
// Simple push/pop stack mechanism
|
|
type Stack struct {
|
|
data []*big.Int
|
|
}
|
|
|
|
func NewStack() *Stack {
|
|
return &Stack{}
|
|
}
|
|
|
|
func (st *Stack) Data() []*big.Int {
|
|
return st.data
|
|
}
|
|
|
|
func (st *Stack) Len() int {
|
|
return len(st.data)
|
|
}
|
|
|
|
func (st *Stack) Pop() *big.Int {
|
|
str := st.data[len(st.data)-1]
|
|
|
|
copy(st.data[:len(st.data)-1], st.data[:len(st.data)-1])
|
|
st.data = st.data[:len(st.data)-1]
|
|
|
|
return str
|
|
}
|
|
|
|
func (st *Stack) Popn() (*big.Int, *big.Int) {
|
|
ints := st.data[len(st.data)-2:]
|
|
|
|
copy(st.data[:len(st.data)-2], st.data[:len(st.data)-2])
|
|
st.data = st.data[:len(st.data)-2]
|
|
|
|
return ints[0], ints[1]
|
|
}
|
|
|
|
func (st *Stack) Peek() *big.Int {
|
|
str := st.data[len(st.data)-1]
|
|
|
|
return str
|
|
}
|
|
|
|
func (st *Stack) Peekn() (*big.Int, *big.Int) {
|
|
ints := st.data[:2]
|
|
|
|
return ints[0], ints[1]
|
|
}
|
|
|
|
func (st *Stack) Push(d *big.Int) {
|
|
st.data = append(st.data, new(big.Int).Set(d))
|
|
}
|
|
|
|
func (st *Stack) Get(amount *big.Int) []*big.Int {
|
|
// offset + size <= len(data)
|
|
length := big.NewInt(int64(len(st.data)))
|
|
if amount.Cmp(length) <= 0 {
|
|
start := new(big.Int).Sub(length, amount)
|
|
return st.data[start.Int64():length.Int64()]
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func (st *Stack) Print() {
|
|
fmt.Println("### stack ###")
|
|
if len(st.data) > 0 {
|
|
for i, val := range st.data {
|
|
fmt.Printf("%-3d %v\n", i, val)
|
|
}
|
|
} else {
|
|
fmt.Println("-- empty --")
|
|
}
|
|
fmt.Println("#############")
|
|
}
|
|
|
|
type Memory struct {
|
|
store []byte
|
|
}
|
|
|
|
func (m *Memory) Set(offset, size int64, value []byte) {
|
|
totSize := offset + size
|
|
lenSize := int64(len(m.store) - 1)
|
|
if totSize > lenSize {
|
|
// Calculate the diff between the sizes
|
|
diff := totSize - lenSize
|
|
if diff > 0 {
|
|
// Create a new empty slice and append it
|
|
newSlice := make([]byte, diff-1)
|
|
// Resize slice
|
|
m.store = append(m.store, newSlice...)
|
|
}
|
|
}
|
|
copy(m.store[offset:offset+size], value)
|
|
}
|
|
|
|
func (m *Memory) Get(offset, size int64) []byte {
|
|
return m.store[offset : offset+size]
|
|
}
|
|
|
|
func (m *Memory) Len() int {
|
|
return len(m.store)
|
|
}
|
|
|
|
func (m *Memory) Data() []byte {
|
|
return m.store
|
|
}
|
|
|
|
func (m *Memory) Print() {
|
|
fmt.Printf("### mem %d bytes ###\n", len(m.store))
|
|
if len(m.store) > 0 {
|
|
addr := 0
|
|
for i := 0; i+32 <= len(m.store); i += 32 {
|
|
fmt.Printf("%03d: % x\n", addr, m.store[i:i+32])
|
|
addr++
|
|
}
|
|
} else {
|
|
fmt.Println("-- empty --")
|
|
}
|
|
fmt.Println("####################")
|
|
}
|