restructure project

internal/object/int.go

@@ -0,0 +1,41 @@
+package object
+
+import "fmt"
+
+type Integer struct {
+	Value int64
+}
+
+func (i *Integer) Bool() bool {
+	return i.Value != 0
+}
+
+func (i *Integer) Type() ObjectType {
+	return INTEGER_OBJ
+}
+
+func (i *Integer) Inspect() string {
+	return fmt.Sprintf("%d", i.Value)
+}
+
+func (i *Integer) Clone() Object {
+	return &Integer{Value: i.Value}
+}
+
+func (i *Integer) String() string {
+	return i.Inspect()
+}
+
+func (i *Integer) Compare(other Object) int {
+	if obj, ok := other.(*Integer); ok {
+		switch {
+		case i.Value < obj.Value:
+			return -1
+		case i.Value > obj.Value:
+			return 1
+		default:
+			return 0
+		}
+	}
+	return -1
+}