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2019/intcode-processor/processor.go

@@ -30,8 +30,9 @@ const (
 )
 
 type Program struct {
-	code []int
-	ptr  int
+	originalCode []int
+	code         []int
+	ptr          int
 
 	state int
 	error error
@@ -44,11 +45,22 @@ type Program struct {
 
 func NewProgram(prog []int) *Program {
 	p := new(Program)
+	p.originalCode = make([]int, len(prog))
 	p.code = make([]int, len(prog))
+	copy(p.originalCode, prog)
+	p.Reset()
+	return p
+}
+
+func (p *Program) Reset() {
+	copy(p.code, p.originalCode)
+	p.ptr = 0
+	p.state = RET_OK
+	p.error = nil
+	p.waitingForInput = false
+	p.waitingForOutput = false
 	p.input = make(chan int)
 	p.output = make(chan int)
-	copy(p.code, prog)
-	return p
 }
 
 func (p *Program) GetCode() []int {