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package ethutil
import (
"math/big"
"strconv"
)
// Op codes
var OpCodes = map[string]byte{
"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,
"TXVALUE": 18,
"TXFEE": 19,
"TXDATAN": 20,
"TXDATA": 21,
"BLK_PREVHASH": 22,
"BLK_COINBASE": 23,
"BLK_TIMESTAMP": 24,
"BLK_NUMBER": 25,
"BLK_DIFFICULTY": 26,
"BASEFEE": 27,
"SHA256": 32,
"RIPEMD160": 33,
"ECMUL": 34,
"ECADD": 35,
"ECSIGN": 36,
"ECRECOVER": 37,
"ECVALID": 38,
"SHA3": 39,
"PUSH": 48,
"POP": 49,
"DUP": 50,
"SWAP": 51,
"MLOAD": 52,
"MSTORE": 53,
"SLOAD": 54,
"SSTORE": 55,
"JMP": 56,
"JMPI": 57,
"IND": 58,
"EXTRO": 59,
"BALANCE": 60,
"MKTX": 61,
"SUICIDE": 62,
}
func IsOpCode(s string) bool {
for key, _ := range OpCodes {
if key == s {
return true
}
}
return false
}
func CompileInstr(s string) ([]byte, error) {
isOp := IsOpCode(s)
if isOp {
return []byte{OpCodes[s]}, nil
}
num := new(big.Int)
num.SetString(s, 0)
return num.Bytes(), 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
}
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