vise/go/vm/opcodes.go

40 lines
721 B
Go

package vm
import (
"encoding/binary"
)
const VERSION = 0
// Opcodes
const (
BACK = 0
CATCH = 1
CROAK = 2
LOAD = 3
RELOAD = 4
MAP = 5
MOVE = 6
HALT = 7
INCMP = 8
//IN = 9
_MAX = 8
)
// NewLine creates a new instruction line for the VM.
func NewLine(instructionList []byte, instruction uint16, strargs []string, byteargs []byte, numargs []uint8) []byte {
b := []byte{0x00, 0x00}
binary.BigEndian.PutUint16(b, instruction)
for _, arg := range strargs {
b = append(b, uint8(len(arg)))
b = append(b, []byte(arg)...)
}
if byteargs != nil {
b = append(b, uint8(len(byteargs)))
b = append(b, byteargs...)
}
if numargs != nil {
b = append(b, numargs...)
}
return append(instructionList, b...)
}