From dac46c828e858a5b4bccbaaa8cab938ab04e3004 Mon Sep 17 00:00:00 2001
From: igormiku <>
Date: Thu, 17 Mar 2022 19:37:38 +0200
Subject: [PATCH 1/2] add support for Nullable sql enums

---
 sql.go | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/sql.go b/sql.go
index 09f050c..e077a71 100644
--- a/sql.go
+++ b/sql.go
@@ -32,6 +32,38 @@ const scanMethod = `func (i *%[1]s) Scan(value interface{}) error {
 	*i = val
 	return nil
 }
+
+`
+const nullableImplementation = `
+type Null%[1]s struct {
+	%[1]s      %[1]s
+	Valid      bool
+}
+
+func NewNull%[1]s(val interface{}) (x Null%[1]s) {
+	x.Scan(val) // yes, we ignore this error, it will just be an invalid value.
+	return
+}
+
+// Scan implements the Scanner interface.
+func (x *Null%[1]s) Scan(value interface{}) (err error) {
+	if value == nil {
+		x.%[1]s, x.Valid = %[1]s(0), false
+		return
+	}
+
+	err = x.%[1]s.Scan(value)
+	x.Valid = (err == nil)
+	return
+}
+
+// Value implements the driver Valuer interface.
+func (x Null%[1]s) Value() (driver.Value, error) {
+	if !x.Valid {
+		return nil, nil
+	}
+	return x.%[1]s.String(), nil
+}
 `
 
 func (g *Generator) addValueAndScanMethod(typeName string) {
@@ -39,4 +71,6 @@ func (g *Generator) addValueAndScanMethod(typeName string) {
 	g.Printf(valueMethod, typeName)
 	g.Printf("\n\n")
 	g.Printf(scanMethod, typeName)
+	g.Printf("\n\n")
+	g.Printf(nullableImplementation, typeName)
 }

From 2cd1d1c7c3550a4b2a8be610c70fa5748be58b01 Mon Sep 17 00:00:00 2001
From: igormiku <>
Date: Thu, 17 Mar 2022 19:43:50 +0200
Subject: [PATCH 2/2] add posibility to reference as separate module

---
 examples/gomods/README.md | 8 ++++----
 examples/gomods/main.go   | 2 +-
 go.mod                    | 2 +-
 stringer.go               | 4 ++--
 4 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/examples/gomods/README.md b/examples/gomods/README.md
index 8d96aa0..97d6ad5 100644
--- a/examples/gomods/README.md
+++ b/examples/gomods/README.md
@@ -2,7 +2,7 @@
 
 ## Steps
 
- 1. Go get enumer `go get -u  github.com/dmarkham/enumer`
- 2. `go generate` This should create `pill_enumer.go`
- 3. `go run  *.go` to see it in action
- 4. `go mod tidy` to remove the deps for `enumer` once your happy.
+1.  Go get enumer `go get -u github.com/igormiku/enumer`
+2.  `go generate` This should create `pill_enumer.go`
+3.  `go run *.go` to see it in action
+4.  `go mod tidy` to remove the deps for `enumer` once your happy.
diff --git a/examples/gomods/main.go b/examples/gomods/main.go
index 7d38027..798efe8 100644
--- a/examples/gomods/main.go
+++ b/examples/gomods/main.go
@@ -2,7 +2,7 @@ package main
 
 import "fmt"
 
-//go:generate go run github.com/dmarkham/enumer -type=Pill -json
+//go:generate go run github.com/igormiku/enumer -type=Pill -json
 type Pill int
 
 const (
diff --git a/go.mod b/go.mod
index b08e1fa..11c3cd1 100644
--- a/go.mod
+++ b/go.mod
@@ -1,4 +1,4 @@
-module github.com/dmarkham/enumer
+module github.com/igormiku/enumer
 
 require (
 	github.com/pascaldekloe/name v1.0.0
diff --git a/stringer.go b/stringer.go
index 49c87fd..29ee405 100644
--- a/stringer.go
+++ b/stringer.go
@@ -5,7 +5,7 @@
 // Enumer is a tool to generate Go code that adds useful methods to Go enums (constants with a specific type).
 // It started as a fork of Rob Pike’s Stringer tool
 //
-// Please visit http://github.com/dmarkham/enumer for a comprehensive documentation
+// Please visit http://github.com/igormiku/enumer for a comprehensive documentation
 package main
 
 import (
@@ -71,7 +71,7 @@ func Usage() {
 	_, _ = fmt.Fprintf(os.Stderr, "\tEnumer [flags] -type T [directory]\n")
 	_, _ = fmt.Fprintf(os.Stderr, "\tEnumer [flags] -type T files... # Must be a single package\n")
 	_, _ = fmt.Fprintf(os.Stderr, "For more information, see:\n")
-	_, _ = fmt.Fprintf(os.Stderr, "\thttp://godoc.org/github.com/dmarkham/enumer\n")
+	_, _ = fmt.Fprintf(os.Stderr, "\thttp://godoc.org/github.com/igormiku/enumer\n")
 	_, _ = fmt.Fprintf(os.Stderr, "Flags:\n")
 	flag.PrintDefaults()
 }