128 lines
2.6 KiB
Bash
128 lines
2.6 KiB
Bash
#!/usr/bin/env bash
|
|
|
|
adv () { # OPCODE 0
|
|
$DEBUG && printf "OPCODE : 0 OP: adv OPERAND: %s\n" "$1" >&2
|
|
OPERAND=$( get_combo "$1" )
|
|
REG_A=$(( REG_A / (2 ** OPERAND) ))
|
|
}
|
|
bxl () { # OPCODE 1
|
|
$DEBUG && printf "OPCODE : 1 OP: bxl OPERAND: %s\n" "$1" >&2
|
|
OPERAND=$1
|
|
REG_B=$(( REG_B ^ OPERAND ))
|
|
}
|
|
bst () { # OPCODE 2
|
|
$DEBUG && printf "OPCODE : 2 OP: bst OPERAND: %s\n" "$1" >&2
|
|
OPERAND=$( get_combo "$1" )
|
|
REG_B=$(( OPERAND % 8 ))
|
|
}
|
|
jnz () { # OPCODE 3
|
|
$DEBUG && printf "OPCODE : 3 OP: jnz OPERAND: %s\n" "$1" >&2
|
|
OPERAND=$1
|
|
if [[ $REG_A -eq 0 ]]
|
|
then
|
|
return 0
|
|
else
|
|
POINTER=$OPERAND
|
|
fi
|
|
}
|
|
bxc () { # OPCODE 4
|
|
$DEBUG && printf "OPCODE : 4 OP: bxc OPERAND: %s\n" "$1" >&2
|
|
# OPERAND=$1 # Deprecated for legacy reasons
|
|
REG_B=$(( REG_B ^ REG_C ))
|
|
}
|
|
out () { # OPCODE 5
|
|
$DEBUG && printf "OPCODE : 5 OP: out OPERAND: %s\n" "$1" >&2
|
|
OPERAND=$( get_combo "$1" )
|
|
printf "%s\n" "$(( OPERAND % 8 ))"
|
|
}
|
|
bdv () { # OPCODE 6
|
|
$DEBUG && printf "OPCODE : 6 OP: bdv OPERAND: %s\n" "$1" >&2
|
|
OPERAND=$( get_combo "$1" )
|
|
REG_B=$(( REG_A / (2 ** OPERAND) ))
|
|
}
|
|
cdv () { # OPCODE 7
|
|
$DEBUG && printf "OPCODE : 7 OP: cdv OPERAND: %s\n" "$1" >&2
|
|
OPERAND=$( get_combo "$1" )
|
|
REG_C=$(( REG_A / (2 ** OPERAND) ))
|
|
}
|
|
|
|
# Get combo operand
|
|
get_combo () {
|
|
if [[ $OPERAND -eq 0 ]]
|
|
then
|
|
printf "$1"
|
|
elif [[ $OPERAND -eq 1 ]]
|
|
then
|
|
printf "$1"
|
|
elif [[ $OPERAND -eq 2 ]]
|
|
then
|
|
printf "$1"
|
|
elif [[ $OPERAND -eq 3 ]]
|
|
then
|
|
printf "$1"
|
|
elif [[ $OPERAND -eq 4 ]]
|
|
then
|
|
printf "%s" "$REG_A"
|
|
elif [[ $OPERAND -eq 5 ]]
|
|
then
|
|
printf "%s" "$REG_B"
|
|
elif [[ $OPERAND -eq 6 ]]
|
|
then
|
|
printf "%s" "$REG_C"
|
|
elif [[ $OPERAND -eq 7 ]]
|
|
then
|
|
printf "Reserved operand. Exiting.\n" >&2
|
|
exit 1
|
|
fi
|
|
}
|
|
|
|
# Check if the program is a quine
|
|
check_quine () {
|
|
for (( i=0; i<INPUT_LEN; i++ ))
|
|
do
|
|
if [[ ${INPUT[$i]} != "${OUTPUT[$i]}" ]]
|
|
then
|
|
return 1
|
|
fi
|
|
done
|
|
}
|
|
|
|
# Interpret opcode
|
|
read_opcode () {
|
|
local OPCODE=$1
|
|
local OPERAND=$2
|
|
if [[ $OPCODE -eq 0 ]]
|
|
then
|
|
adv "$OPERAND"
|
|
(( POINTER+=2 ))
|
|
elif [[ $OPCODE -eq 1 ]]
|
|
then
|
|
bxl "$OPERAND"
|
|
(( POINTER+=2 ))
|
|
elif [[ $OPCODE -eq 2 ]]
|
|
then
|
|
bst "$OPERAND"
|
|
(( POINTER+=2 ))
|
|
elif [[ $OPCODE -eq 3 ]]
|
|
then
|
|
# jnz itself moves the pointer
|
|
jnz "$OPERAND"
|
|
elif [[ $OPCODE -eq 4 ]]
|
|
then
|
|
bxc "$OPERAND"
|
|
(( POINTER+=2 ))
|
|
elif [[ $OPCODE -eq 5 ]]
|
|
then
|
|
out "$OPERAND"
|
|
(( POINTER+=2 ))
|
|
elif [[ $OPCODE -eq 6 ]]
|
|
then
|
|
bdv "$OPERAND"
|
|
(( POINTER+=2 ))
|
|
elif [[ $OPCODE -eq 7 ]]
|
|
then
|
|
cdv "$OPERAND"
|
|
(( POINTER+=2 ))
|
|
fi
|
|
}
|