add attributes fiald to all nodes

node/expr/cast/cast.go

@@ -5,6 +5,7 @@ import (
 )
 
 type Cast struct {
-	name string
-	expr node.Node
+	name       string
+	attributes map[string]interface{}
+	expr       node.Node
 }

node/expr/cast/cast_array.go

@@ -12,6 +12,7 @@ func NewCastArray(expr node.Node) node.Node {
 	return CastArray{
 		Cast{
 			"CastArray",
+			map[string]interface{}{},
 			expr,
 		},
 	}
@@ -22,7 +23,7 @@ func (n CastArray) Name() string {
 }
 
 func (n CastArray) Attributes() map[string]interface{} {
-	return nil
+	return n.attributes
 }
 
 func (n CastArray) Walk(v node.Visitor) {

node/expr/cast/cast_bool.go

@@ -12,6 +12,7 @@ func NewCastBool(expr node.Node) node.Node {
 	return CastBool{
 		Cast{
 			"CastBool",
+			map[string]interface{}{},
 			expr,
 		},
 	}
@@ -22,7 +23,7 @@ func (n CastBool) Name() string {
 }
 
 func (n CastBool) Attributes() map[string]interface{} {
-	return nil
+	return n.attributes
 }
 
 func (n CastBool) Walk(v node.Visitor) {

node/expr/cast/cast_double.go

@@ -12,6 +12,7 @@ func NewCastDouble(expr node.Node) node.Node {
 	return CastDouble{
 		Cast{
 			"CastDouble",
+			map[string]interface{}{},
 			expr,
 		},
 	}
@@ -22,7 +23,7 @@ func (n CastDouble) Name() string {
 }
 
 func (n CastDouble) Attributes() map[string]interface{} {
-	return nil
+	return n.attributes
 }
 
 func (n CastDouble) Walk(v node.Visitor) {

node/expr/cast/cast_int.go

@@ -12,6 +12,7 @@ func NewCastInt(expr node.Node) node.Node {
 	return CastInt{
 		Cast{
 			"CastInt",
+			map[string]interface{}{},
 			expr,
 		},
 	}
@@ -22,7 +23,7 @@ func (n CastInt) Name() string {
 }
 
 func (n CastInt) Attributes() map[string]interface{} {
-	return nil
+	return n.attributes
 }
 
 func (n CastInt) Walk(v node.Visitor) {

node/expr/cast/cast_object.go

@@ -12,6 +12,7 @@ func NewCastObject(expr node.Node) node.Node {
 	return CastObject{
 		Cast{
 			"CastObject",
+			map[string]interface{}{},
 			expr,
 		},
 	}
@@ -22,7 +23,7 @@ func (n CastObject) Name() string {
 }
 
 func (n CastObject) Attributes() map[string]interface{} {
-	return nil
+	return n.attributes
 }
 
 func (n CastObject) Walk(v node.Visitor) {

node/expr/cast/cast_string.go

@@ -12,6 +12,7 @@ func NewCastString(expr node.Node) node.Node {
 	return CastString{
 		Cast{
 			"CastString",
+			map[string]interface{}{},
 			expr,
 		},
 	}
@@ -22,7 +23,7 @@ func (n CastString) Name() string {
 }
 
 func (n CastString) Attributes() map[string]interface{} {
-	return nil
+	return n.attributes
 }
 
 func (n CastString) Walk(v node.Visitor) {

node/expr/cast/cast_unset.go

@@ -12,6 +12,7 @@ func NewCastUnset(expr node.Node) node.Node {
 	return CastUnset{
 		Cast{
 			"CastUnset",
+			map[string]interface{}{},
 			expr,
 		},
 	}
@@ -22,7 +23,7 @@ func (n CastUnset) Name() string {
 }
 
 func (n CastUnset) Attributes() map[string]interface{} {
-	return nil
+	return n.attributes
 }
 
 func (n CastUnset) Walk(v node.Visitor) {