Go 1.16 support for embedded files (#51)

* add go 1.16

.circleci/config.yml

@@ -36,6 +36,10 @@ jobs:
     docker:
       - image: circleci/golang:1.15
     <<: *common_parts
+  golang_1.16:
+    docker:
+      - image: circleci/golang:1.16
+    <<: *common_parts
 
 workflows:
   version: 2
@@ -45,3 +49,4 @@ workflows:
       - golang_1.13
       - golang_1.14
       - golang_1.15
+      - golang_1.16

generator/embedded.go

@@ -0,0 +1,16 @@
+//go:generate ../bin/go-bindata -nometadata -o assets/assets.go -pkg=assets enum.tmpl
+// +build !go1.16
+
+package generator
+
+import (
+	"text/template"
+
+	"github.com/abice/go-enum/generator/assets"
+)
+
+func (g *Generator) addEmbeddedTemplates() {
+	for _, asset := range assets.AssetNames() {
+		g.t = template.Must(g.t.Parse(string(assets.MustAsset(asset))))
+	}
+}

generator/embedded_1.16.go

@@ -0,0 +1,15 @@
+// +build go1.16
+
+package generator
+
+import (
+	"embed"
+	"text/template"
+)
+
+//go:embed enum.tmpl
+var content embed.FS
+
+func (g *Generator) addEmbeddedTemplates() {
+	g.t = template.Must(g.t.ParseFS(content, "*.tmpl"))
+}

generator/generator.go

@@ -1,5 +1,3 @@
-//go:generate ../bin/go-bindata -nometadata -o assets/assets.go -pkg=assets enum.tmpl
-
 package generator
 
 import (
@@ -16,7 +14,6 @@ import (
 	"unicode"
 
 	"github.com/Masterminds/sprig"
-	"github.com/abice/go-enum/generator/assets"
 	"github.com/pkg/errors"
 	"golang.org/x/tools/imports"
 )
@@ -83,9 +80,7 @@ func NewGenerator() *Generator {
 
 	g.t.Funcs(funcs)
 
-	for _, asset := range assets.AssetNames() {
-		g.t = template.Must(g.t.Parse(string(assets.MustAsset(asset))))
-	}
+	g.addEmbeddedTemplates()
 
 	g.updateTemplates()
 

go.mod

@@ -1,6 +1,6 @@
 module github.com/abice/go-enum
 
-go 1.12
+go 1.16
 
 require (
 	github.com/Masterminds/goutils v1.1.0 // indirect