remove unused attributes fields

node/scalar/dnumber.go

@@ -5,21 +5,21 @@ import (
 )
 
 type Dnumber struct {
-	attributes map[string]interface{}
-	position   *node.Position
+	position *node.Position
+	Value    string
 }
 
 func NewDnumber(Value string) node.Node {
 	return &Dnumber{
-		map[string]interface{}{
-			"Value": Value,
-		},
 		nil,
+		Value,
 	}
 }
 
 func (n Dnumber) Attributes() map[string]interface{} {
-	return n.attributes
+	return map[string]interface{}{
+		"Value": n.Value,
+	}
 }
 
 func (n Dnumber) Position() *node.Position {

node/scalar/encapsed.go

@@ -5,21 +5,19 @@ import (
 )
 
 type Encapsed struct {
-	attributes map[string]interface{}
-	position   *node.Position
-	Parts      []node.Node
+	position *node.Position
+	Parts    []node.Node
 }
 
 func NewEncapsed(Parts []node.Node) node.Node {
 	return &Encapsed{
-		map[string]interface{}{},
 		nil,
 		Parts,
 	}
 }
 
 func (n Encapsed) Attributes() map[string]interface{} {
-	return n.attributes
+	return nil
 }
 
 func (n Encapsed) Position() *node.Position {

node/scalar/encapsed_string_part.go

@@ -5,21 +5,21 @@ import (
 )
 
 type EncapsedStringPart struct {
-	attributes map[string]interface{}
-	position   *node.Position
+	position *node.Position
+	Value    string
 }
 
 func NewEncapsedStringPart(Value string) node.Node {
 	return &EncapsedStringPart{
-		map[string]interface{}{
-			"Value": Value,
-		},
 		nil,
+		Value,
 	}
 }
 
 func (n EncapsedStringPart) Attributes() map[string]interface{} {
-	return n.attributes
+	return map[string]interface{}{
+		"Value": n.Value,
+	}
 }
 
 func (n EncapsedStringPart) Position() *node.Position {

node/scalar/lnumber.go

@@ -5,21 +5,21 @@ import (
 )
 
 type Lnumber struct {
-	attributes map[string]interface{}
-	position   *node.Position
+	position *node.Position
+	Value    string
 }
 
 func NewLnumber(Value string) node.Node {
 	return &Lnumber{
-		map[string]interface{}{
-			"Value": Value,
-		},
 		nil,
+		Value,
 	}
 }
 
 func (n Lnumber) Attributes() map[string]interface{} {
-	return n.attributes
+	return map[string]interface{}{
+		"Value": n.Value,
+	}
 }
 
 func (n Lnumber) Position() *node.Position {

node/scalar/magic_constant.go

@@ -5,21 +5,21 @@ import (
 )
 
 type MagicConstant struct {
-	attributes map[string]interface{}
-	position   *node.Position
+	position *node.Position
+	Value    string
 }
 
 func NewMagicConstant(Value string) node.Node {
 	return &MagicConstant{
-		map[string]interface{}{
-			"Value": Value,
-		},
 		nil,
+		Value,
 	}
 }
 
 func (n MagicConstant) Attributes() map[string]interface{} {
-	return n.attributes
+	return map[string]interface{}{
+		"Value": n.Value,
+	}
 }
 
 func (n MagicConstant) Position() *node.Position {

node/scalar/string.go

@@ -5,21 +5,21 @@ import (
 )
 
 type String struct {
-	attributes map[string]interface{}
-	position   *node.Position
+	position *node.Position
+	Value    string
 }
 
 func NewString(Value string) node.Node {
 	return &String{
-		map[string]interface{}{
-			"Value": Value,
-		},
 		nil,
+		Value,
 	}
 }
 
 func (n String) Attributes() map[string]interface{} {
-	return n.attributes
+	return map[string]interface{}{
+		"Value": n.Value,
+	}
 }
 
 func (n String) Position() *node.Position {