column based ops

.vscode/launch.json

@@ -42,13 +42,21 @@
       "program": "${workspaceFolder}/2025/day_5",
     },
     {
-      "name": "2025 Day 6",
+      "name": "2025 Day 6 (part 1)",
       "type": "go",
       "request": "launch",
       "mode": "auto",
       "cwd": "${workspaceFolder}/2025/day_6",
       "program": "${workspaceFolder}/2025/day_6",
     },
+    {
+      "name": "2025 Day 6 (part 2)",
+      "type": "go",
+      "request": "launch",
+      "mode": "auto",
+      "cwd": "${workspaceFolder}/2025/day_6/part_2",
+      "program": "${workspaceFolder}/2025/day_6/part_2",
+    },
     {
       "type": "node",
       "request": "launch",

2025/day_1/main.go

@@ -38,7 +38,7 @@ func main() {
 			d.Turn(d.getAmount())
 			d.Reset()
 		default:
-			d.amount = append(d.amount, si.R)
+			d.amount = append(d.amount, si.R.Rune())
 		}
 	})
 

2025/day_2/main.go

@@ -31,7 +31,7 @@ func main() {
 			s.Pairs = append(s.Pairs, *s.CurrentPair)
 			s.Reset()
 		default:
-			s.Value = append(s.Value, si.R)
+			s.Value = append(s.Value, si.R.Rune())
 		}
 	})
 	log.Printf("answer: %d", s.Result)

2025/day_6/part_1/go.mod

@@ -0,0 +1,11 @@
+module day_6_part_1_aoc_2025
+
+go 1.25.1
+
+require github.com/stretchr/testify v1.11.1
+
+require (
+	github.com/davecgh/go-spew v1.1.1 // indirect
+	github.com/pmezard/go-difflib v1.0.0 // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
+)

2025/day_6/part_1/go.sum

@@ -0,0 +1,10 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

2025/day_6/main.go → 2025/day_6/part_1/main.go

@@ -1,8 +1,8 @@
 package main
 
 import (
-	"day_6_aoc_2025/expression"
-	"day_6_aoc_2025/state"
+	"day_6_part_1_aoc_2025/expression"
+	"day_6_part_1_aoc_2025/state"
 	"log"
 	shared "shared_aoc_2025"
 )
@@ -27,7 +27,7 @@ func main() {
 			total += exp.Evaluate()
 		}
 		log.Printf("total: %d", total)
-	}), shared.WithNewlineCallback(func() {
+	}), shared.WithNewlineCallback(func(si shared.StreamInfo) {
 		if !s.CurrentOperand().IsEmpty() {
 			log.Println("not empty")
 		}
@@ -42,7 +42,7 @@ func AddToExpression(s *state.State, si shared.StreamInfo) {
 	if currentOperand.IsEmpty() {
 		return
 	}
-	if si.Line == 1 {
+	if si.LineNumber == 1 {
 		exp := expression.NewExpression()
 		op := currentOperand.Build()
 		exp.AppendOperand(op)

2025/day_6/state/state.go → 2025/day_6/part_1/state/state.go

@@ -1,6 +1,6 @@
 package state
 
-import "day_6_aoc_2025/expression"
+import "day_6_part_1_aoc_2025/expression"
 
 type State struct {
 	expressions    []*expression.Expression

2025/day_6/part_2/go.mod

@@ -0,0 +1,3 @@
+module day_6_part_2_aoc_2025
+
+go 1.25.1

2025/day_6/part_2/main.go

@@ -0,0 +1,73 @@
+package main
+
+import (
+	"log"
+	shared "shared_aoc_2025"
+	"strconv"
+	"strings"
+)
+
+type value struct {
+	strVal string
+}
+
+// Int converts the value to an integer.
+func (v value) Int() int {
+	strings.TrimSpace(v.strVal)
+	intVal, err := strconv.Atoi(v.strVal)
+	if err != nil {
+		panic(err)
+	}
+	return intVal
+}
+
+// IsEmpty checks if the string value is empty.
+func (v value) IsEmpty() bool {
+	return len(strings.Trim(v.strVal, " ")) == 0
+}
+
+type column struct {
+	values    []value
+	operation Operator
+}
+
+var (
+	columns []column
+)
+
+func main() {
+	cv := value{}
+	colIdx := 0
+	shared.StreamProcess("test.txt", func(si shared.StreamInfo) {
+		switch si.R {
+		case '+', '-', '*', '/':
+		case '\n', '\r':
+			cv = value{}
+			colIdx++
+			if colIdx >= len(columns) {
+				colIdx = 0
+			}
+		case ' ':
+			//cv.strVal += si.R.String()
+			if si.LineNumber == 1 {
+				//if !cv.IsEmpty() {
+				columns = append(columns, column{
+					values: []value{cv},
+				})
+				//}
+			}
+			cv = value{}
+		default:
+			cv.strVal += si.R.String()
+		}
+	}, shared.WithEOFCallback(func() {
+		total := 0
+		log.Printf("total: %d", total)
+	}), shared.WithNewlineCallback(func(si shared.StreamInfo) {
+
+	}), shared.WithCRCallback(func(si shared.StreamInfo) {
+
+	}))
+}
+
+// 7098065460541 -- correct

2025/day_6/part_2/operator.go

@@ -0,0 +1,43 @@
+package main
+
+import "fmt"
+
+type Operator int
+
+const (
+	None Operator = iota
+	Add
+	Subtract
+	Multiply
+	Divide
+)
+
+func OperatorFromRune(r rune) Operator {
+	switch r {
+	case '+':
+		return Add
+	case '-':
+		return Subtract
+	case '*':
+		return Multiply
+	case '/':
+		return Divide
+	default:
+		panic(fmt.Sprintf("operator not supported: %c", r))
+	}
+}
+
+func (o Operator) String() string {
+	switch o {
+	case Add:
+		return "+"
+	case Subtract:
+		return "-"
+	case Multiply:
+		return "x"
+	case Divide:
+		return "/"
+	default:
+		return "None"
+	}
+}

2025/day_6/part_2/state/state.go

@@ -0,0 +1,8 @@
+package state
+
+type State struct {
+}
+
+func New() State {
+	return State{}
+}

2025/go.work

@@ -6,6 +6,7 @@ use (
 	./day_3
 	./day_4
 	./day_5
-	./day_6
+	./day_6/part_1
+	./day_6/part_2
 	./shared
 )

2025/shared/character.go

@@ -0,0 +1,17 @@
+package shared
+
+type Character rune
+
+const (
+	Newline        rune = '\n'
+	CarriageReturn rune = '\r'
+	Space          rune = ' '
+)
+
+func (c Character) String() string {
+	return string(c)
+}
+
+func (c Character) Rune() rune {
+	return rune(c)
+}