aoc2024/day03/main.go

@@ -24,36 +24,18 @@ func (r result) String() string { return fmt.Sprintf("%#v", r) }
 func run(read io.Reader) (*result, error) {
 
 	sum := 0
-	sum2 := 0
 
 	lexer := Lexer(read)
-	active := true
+	for typ, token := range lexer.Iter() {
 
-	for typ, _ := range lexer.Iter() {
-		// fmt.Println(typ, string(token))
-		switch {
-		case typ == "TokMUL":
 		if m := readMul(lexer); m != 0 {
+			fmt.Println(typ, string(token))
 			sum += m
-				if active {
-					sum2 += m
-				}
-			}
-		case typ == "TokDONT":
-			if readDont(lexer) {
-				println("don't()", active)
-				active = false
-			}
-
-		case typ == "TokDO":
-			if readDo(lexer) {
-				println("do()", active)
-				active = true
-			}
 		}
 	}
 
-	return &result{sum, sum2}, nil
+
+	return &result{sum, -1}, nil
 }
 
 func Lexer(in io.Reader) *lexer {
@@ -63,8 +45,7 @@ func Lexer(in io.Reader) *lexer {
 		buf = buf[:s]
 
 		for len(buf) > 0 {
-			for i, r := range string(buf) {
-				println(i, r)
+			for _, r := range string(buf) {
 				if !yield(r) {
 					return
 				}
@@ -137,24 +118,7 @@ func (l *lexer) NextTok() bool {
 	case 'm':
 		l.loadString("mul")
 		l.token = "TokMUL"
-		if string(l.literal) != "mul" {
-			l.token = "TokILLEGAL"
-			return false
-		}
 		return true
-	case 'd':
-		l.loadString("don't")
-		switch string(l.literal) {
-		case "don't":
-			l.token = "TokDONT"
-		case "do":
-			l.token = "TokDO"
-		default:
-			l.token = "TokILLEGAL"
-			return false
-		}
-		return true
-
 	case '(':
 		l.loadRune("TokLPAREN")
 		return true
@@ -219,29 +183,3 @@ func readMul(lex *lexer) int {
 	fmt.Println(a, "*", b)
 	return a * b
 }
-
-func readDont(lex *lexer) bool {
-	if lex.token != "TokDONT" || string(lex.literal) != "don't" {
-		return false
-	}
-	if !lex.NextTok() || lex.token != "TokLPAREN" {
-		return false
-	}
-	if !lex.NextTok() || lex.token != "TokRPAREN" {
-		return false
-	}
-	return true
-}
-
-func readDo(lex *lexer) bool {
-	if lex.token != "TokDO" || string(lex.literal) != "do" {
-		return false
-	}
-	if !lex.NextTok() || lex.token != "TokLPAREN" {
-		return false
-	}
-	if !lex.NextTok() || lex.token != "TokRPAREN" {
-		return false
-	}
-	return true
-}

aoc2024/day03/main_test.go

@@ -26,10 +26,9 @@ func TestExample(t *testing.T) {
 	t.Log(result)
 	is.Equal(result.valuePT1, 161)
 
-	result, err = run(bytes.NewReader(example2))
-	is.NoErr(err)
-
- 	is.Equal(result.valuePT2, 48)
+	// result, err = run(bytes.NewReader(example2))
+	// is.NoErr(err)
+	// is.Equal(result.valuePT2, 48)
 }
 
 func TestSolution(t *testing.T) {
@@ -41,5 +40,5 @@ func TestSolution(t *testing.T) {
 	t.Log(result)
 	is.True(result.valuePT1 < 186942148) // first attempt too high
 	is.Equal(result.valuePT1, 184122457)
-	is.Equal(result.valuePT2, 0)
+	//is.Equal(result.valuePT2, 0)
 }