sometimes it happens

cmd/pkger/cmds/pack.go

@@ -90,7 +90,7 @@ func New() (*packCmd, error) {
 	c := &packCmd{}
 
 	c.subs = []command{
-		&serveCmd{}, &statCmd{}, &infoCmd{}, &pathCmd{},
+		&serveCmd{}, &statCmd{}, &infoCmd{}, &pathCmd{}, &parseCmd{},
 	}
 	sort.Slice(c.subs, func(a, b int) bool {
 		return c.subs[a].Name() <= c.subs[b].Name()

cmd/pkger/cmds/parse.go

@@ -0,0 +1,63 @@
+package cmds
+
+import (
+	"encoding/json"
+	"flag"
+	"os"
+
+	"github.com/markbates/pkger/here"
+	"github.com/markbates/pkger/parser"
+)
+
+type parseCmd struct {
+	*flag.FlagSet
+	json bool
+	help bool
+}
+
+func (s *parseCmd) Name() string {
+	return s.Flags().Name()
+}
+
+func (c *parseCmd) Flags() *flag.FlagSet {
+	if c.FlagSet == nil {
+		c.FlagSet = flag.NewFlagSet("parse", flag.ExitOnError)
+		// c.BoolVar(&c.json, "json", false, "outputs as json")
+		c.BoolVar(&c.help, "h", false, "prints help information")
+	}
+	return c.FlagSet
+}
+
+func (c *parseCmd) Exec(args []string) error {
+
+	c.Parse(args)
+
+	if c.help {
+		c.Usage()
+		return nil
+	}
+
+	args = c.Args()
+	if len(args) == 0 {
+		args = append(args, ".")
+	}
+
+	m := map[string]parser.Decls{}
+
+	for _, a := range args {
+		info, err := here.Package(a)
+		if err != nil {
+			return err
+		}
+
+		decls, err := parser.Parse(info)
+		if err != nil {
+			return err
+		}
+		m[a] = decls
+	}
+
+	enc := json.NewEncoder(os.Stdout)
+	enc.SetIndent("", " ")
+	return enc.Encode(m)
+}

cmd/pkger/cmds/path.go

@@ -55,5 +55,4 @@ func (c *pathCmd) Exec(args []string) error {
 	enc := json.NewEncoder(os.Stdout)
 	enc.SetIndent("", " ")
 	return enc.Encode(paths)
-	return nil
 }

parser/open.go

@@ -1,6 +1,7 @@
 package parser
 
 import (
+	"encoding/json"
 	"go/token"
 	"os"
 	"path/filepath"
@@ -17,6 +18,15 @@ type OpenDecl struct {
 	value string
 }
 
+func (d OpenDecl) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]interface{}{
+		"type":  "pkger.Open",
+		"file":  d.file,
+		"pos":   d.pos,
+		"value": d.value,
+	})
+}
+
 func (d OpenDecl) File() (*File, error) {
 	if d.file == nil {
 		return nil, os.ErrNotExist

parser/walk.go

@@ -1,6 +1,7 @@
 package parser
 
 import (
+	"encoding/json"
 	"go/token"
 	"os"
 	"path/filepath"
@@ -18,6 +19,15 @@ type WalkDecl struct {
 	value string
 }
 
+func (d WalkDecl) MarshalJSON() ([]byte, error) {
+	return json.Marshal(map[string]interface{}{
+		"type":  "pkger.Walk",
+		"file":  d.file,
+		"pos":   d.pos,
+		"value": d.value,
+	})
+}
+
 func (d WalkDecl) File() (*File, error) {
 	if d.file == nil {
 		return nil, os.ErrNotExist