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Make opcode constants

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Just planning for the future...
This commit is contained in:
Chris Pickett
2022-06-07 09:54:40 -05:00
parent 9b65c91041
commit dd5c072730
1 changed files with 9 additions and 3 deletions
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12
utilities/intcode.go
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@ -5,6 +5,12 @@ import (
"strings" "strings"
) )
const (
opAdd = 1
opMul = 2
opEnd = 99
)
func ParseIntcodeProgram(programStr string) []int64 { func ParseIntcodeProgram(programStr string) []int64 {
nums := strings.Split(programStr, ",") nums := strings.Split(programStr, ",")
program := make([]int64, len(nums)) program := make([]int64, len(nums))
@ -23,7 +29,7 @@ func RunIntcodeProgram(program []int64) {
for instructionPointer := 0; instructionPointer < len(program); { for instructionPointer := 0; instructionPointer < len(program); {
opcode := program[instructionPointer] opcode := program[instructionPointer]
switch opcode { switch opcode {
case 1: case opAdd:
param1 := program[instructionPointer+1] param1 := program[instructionPointer+1]
param2 := program[instructionPointer+2] param2 := program[instructionPointer+2]
param3 := program[instructionPointer+3] param3 := program[instructionPointer+3]
@ -31,7 +37,7 @@ func RunIntcodeProgram(program []int64) {
instructionPointer += 4 instructionPointer += 4
break break
case 2: case opMul:
param1 := program[instructionPointer+1] param1 := program[instructionPointer+1]
param2 := program[instructionPointer+2] param2 := program[instructionPointer+2]
param3 := program[instructionPointer+3] param3 := program[instructionPointer+3]
@ -39,7 +45,7 @@ func RunIntcodeProgram(program []int64) {
instructionPointer += 4 instructionPointer += 4
break break
case 99: case opEnd:
instructionPointer = len(program) instructionPointer = len(program)
break break
} }