mirror of
https://gitlab.com/pulsechaincom/go-pulse.git
synced 2024-12-25 12:57:17 +00:00
109 lines
2.0 KiB
Go
109 lines
2.0 KiB
Go
package ethutil
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"math/big"
|
|
"strconv"
|
|
"strings"
|
|
)
|
|
|
|
// Op codes
|
|
var OpCodes = map[string]string{
|
|
"STOP": "0",
|
|
"ADD": "1",
|
|
"MUL": "2",
|
|
"SUB": "3",
|
|
"DIV": "4",
|
|
"SDIV": "5",
|
|
"MOD": "6",
|
|
"SMOD": "7",
|
|
"EXP": "8",
|
|
"NEG": "9",
|
|
"LT": "10",
|
|
"LE": "11",
|
|
"GT": "12",
|
|
"GE": "13",
|
|
"EQ": "14",
|
|
"NOT": "15",
|
|
"MYADDRESS": "16",
|
|
"TXSENDER": "17",
|
|
|
|
"PUSH": "48",
|
|
"POP": "49",
|
|
"LOAD": "54",
|
|
}
|
|
|
|
func CompileInstr(s string) (string, error) {
|
|
tokens := strings.Split(s, " ")
|
|
if OpCodes[tokens[0]] == "" {
|
|
return s, errors.New(fmt.Sprintf("OP not found: %s", tokens[0]))
|
|
}
|
|
|
|
code := OpCodes[tokens[0]] // Replace op codes with the proper numerical equivalent
|
|
op := new(big.Int)
|
|
op.SetString(code, 0)
|
|
|
|
args := make([]*big.Int, 6)
|
|
for i, val := range tokens[1:len(tokens)] {
|
|
num := new(big.Int)
|
|
num.SetString(val, 0)
|
|
args[i] = num
|
|
}
|
|
|
|
// Big int equation = op + x * 256 + y * 256**2 + z * 256**3 + a * 256**4 + b * 256**5 + c * 256**6
|
|
base := new(big.Int)
|
|
x := new(big.Int)
|
|
y := new(big.Int)
|
|
z := new(big.Int)
|
|
a := new(big.Int)
|
|
b := new(big.Int)
|
|
c := new(big.Int)
|
|
|
|
if args[0] != nil {
|
|
x.Mul(args[0], big.NewInt(256))
|
|
}
|
|
if args[1] != nil {
|
|
y.Mul(args[1], BigPow(256, 2))
|
|
}
|
|
if args[2] != nil {
|
|
z.Mul(args[2], BigPow(256, 3))
|
|
}
|
|
if args[3] != nil {
|
|
a.Mul(args[3], BigPow(256, 4))
|
|
}
|
|
if args[4] != nil {
|
|
b.Mul(args[4], BigPow(256, 5))
|
|
}
|
|
if args[5] != nil {
|
|
c.Mul(args[5], BigPow(256, 6))
|
|
}
|
|
|
|
base.Add(op, x)
|
|
base.Add(base, y)
|
|
base.Add(base, z)
|
|
base.Add(base, a)
|
|
base.Add(base, b)
|
|
base.Add(base, c)
|
|
|
|
return base.String(), nil
|
|
}
|
|
|
|
func Instr(instr string) (int, []string, error) {
|
|
base := new(big.Int)
|
|
base.SetString(instr, 0)
|
|
|
|
args := make([]string, 7)
|
|
for i := 0; i < 7; i++ {
|
|
// int(int(val) / int(math.Pow(256,float64(i)))) % 256
|
|
exp := BigPow(256, i)
|
|
num := new(big.Int)
|
|
num.Div(base, exp)
|
|
|
|
args[i] = num.Mod(num, big.NewInt(256)).String()
|
|
}
|
|
op, _ := strconv.Atoi(args[0])
|
|
|
|
return op, args[1:7], nil
|
|
}
|