Add the cool epic to meta

entity/meta.go

@@ -10,10 +10,11 @@ import "git.tebibyte.media/fspl/fspl/errors"
 
 // Metadata represents a module metadata file.
 type Metadata struct {
-	Position     errors.Position
+	Pos          errors.Position
 	UUID         uuid.UUID
 	Dependencies []*Dependency
 }
+func (this *Metadata) Position () errors.Position { return this.Pos }
 func (this *Metadata) String () string {
 	out := fmt.Sprint(Quote(this.UUID.String()))
 	for _, dependency := range this.Dependencies {
@@ -24,16 +25,24 @@ func (this *Metadata) String () string {
 
 // Directive is a declaration within a module metadata file.
 type Directive interface {
+	fmt.Stringer
+
+	// Position returns the position of the directive within its metadata
+	// file.
+	Position () errors.Position
+	
 	directive()
 }
 
+var _ Directive = &Dependency { }
 // Dependency is a metadata dependency listing.
 type Dependency struct {
-	Position errors.Position
+	Pos      errors.Position
 	Address  Address
 	Nickname string
 }
 func (*Dependency) directive () { }
+func (this *Dependency) Position () errors.Position { return this.Pos }
 func (this *Dependency) String () string {
 	out := fmt.Sprint("+ ", this.Address)
 	if this.Nickname != "" {