add comments

node/expr/cast/cast.go

@@ -4,6 +4,7 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// Cast node
 type Cast struct {
 	Expr node.Node
 }

node/expr/cast/cast_array.go

@@ -4,10 +4,12 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// CastArray node
 type CastArray struct {
 	Cast
 }
 
+// NewCastArray node constuctor
 func NewCastArray(Expr node.Node) *CastArray {
 	return &CastArray{
 		Cast{
@@ -16,10 +18,13 @@ func NewCastArray(Expr node.Node) *CastArray {
 	}
 }
 
+// Attributes returns node attributes as map
 func (n *CastArray) Attributes() map[string]interface{} {
 	return nil
 }
 
+// Walk traverses nodes
+// Walk is invoked recursively until v.EnterNode returns true
 func (n *CastArray) Walk(v node.Visitor) {
 	if v.EnterNode(n) == false {
 		return

node/expr/cast/cast_bool.go

@@ -4,10 +4,12 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// CastBool node
 type CastBool struct {
 	Cast
 }
 
+// NewCastBool node constuctor
 func NewCastBool(Expr node.Node) *CastBool {
 	return &CastBool{
 		Cast{
@@ -16,10 +18,13 @@ func NewCastBool(Expr node.Node) *CastBool {
 	}
 }
 
+// Attributes returns node attributes as map
 func (n *CastBool) Attributes() map[string]interface{} {
 	return nil
 }
 
+// Walk traverses nodes
+// Walk is invoked recursively until v.EnterNode returns true
 func (n *CastBool) Walk(v node.Visitor) {
 	if v.EnterNode(n) == false {
 		return

node/expr/cast/cast_double.go

@@ -4,10 +4,12 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// CastDouble node
 type CastDouble struct {
 	Cast
 }
 
+// NewCastDouble node constuctor
 func NewCastDouble(Expr node.Node) *CastDouble {
 	return &CastDouble{
 		Cast{
@@ -16,10 +18,13 @@ func NewCastDouble(Expr node.Node) *CastDouble {
 	}
 }
 
+// Attributes returns node attributes as map
 func (n *CastDouble) Attributes() map[string]interface{} {
 	return nil
 }
 
+// Walk traverses nodes
+// Walk is invoked recursively until v.EnterNode returns true
 func (n *CastDouble) Walk(v node.Visitor) {
 	if v.EnterNode(n) == false {
 		return

node/expr/cast/cast_int.go

@@ -4,10 +4,12 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// CastInt node
 type CastInt struct {
 	Cast
 }
 
+// NewCastInt node constuctor
 func NewCastInt(Expr node.Node) *CastInt {
 	return &CastInt{
 		Cast{
@@ -16,10 +18,13 @@ func NewCastInt(Expr node.Node) *CastInt {
 	}
 }
 
+// Attributes returns node attributes as map
 func (n *CastInt) Attributes() map[string]interface{} {
 	return nil
 }
 
+// Walk traverses nodes
+// Walk is invoked recursively until v.EnterNode returns true
 func (n *CastInt) Walk(v node.Visitor) {
 	if v.EnterNode(n) == false {
 		return

node/expr/cast/cast_object.go

@@ -4,10 +4,12 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// CastObject node
 type CastObject struct {
 	Cast
 }
 
+// NewCastObject node constuctor
 func NewCastObject(Expr node.Node) *CastObject {
 	return &CastObject{
 		Cast{
@@ -16,10 +18,13 @@ func NewCastObject(Expr node.Node) *CastObject {
 	}
 }
 
+// Attributes returns node attributes as map
 func (n *CastObject) Attributes() map[string]interface{} {
 	return nil
 }
 
+// Walk traverses nodes
+// Walk is invoked recursively until v.EnterNode returns true
 func (n *CastObject) Walk(v node.Visitor) {
 	if v.EnterNode(n) == false {
 		return

node/expr/cast/cast_string.go

@@ -4,10 +4,12 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// CastString node
 type CastString struct {
 	Cast
 }
 
+// NewCastString node constuctor
 func NewCastString(Expr node.Node) *CastString {
 	return &CastString{
 		Cast{
@@ -16,10 +18,13 @@ func NewCastString(Expr node.Node) *CastString {
 	}
 }
 
+// Attributes returns node attributes as map
 func (n *CastString) Attributes() map[string]interface{} {
 	return nil
 }
 
+// Walk traverses nodes
+// Walk is invoked recursively until v.EnterNode returns true
 func (n *CastString) Walk(v node.Visitor) {
 	if v.EnterNode(n) == false {
 		return

node/expr/cast/cast_unset.go

@@ -4,10 +4,12 @@ import (
 	"github.com/z7zmey/php-parser/node"
 )
 
+// CastUnset node
 type CastUnset struct {
 	Cast
 }
 
+// NewCastUnset node constuctor
 func NewCastUnset(Expr node.Node) *CastUnset {
 	return &CastUnset{
 		Cast{
@@ -16,10 +18,13 @@ func NewCastUnset(Expr node.Node) *CastUnset {
 	}
 }
 
+// Attributes returns node attributes as map
 func (n *CastUnset) Attributes() map[string]interface{} {
 	return nil
 }
 
+// Walk traverses nodes
+// Walk is invoked recursively until v.EnterNode returns true
 func (n *CastUnset) Walk(v node.Visitor) {
 	if v.EnterNode(n) == false {
 		return