move dumper to visitor package

visitor/dumper.go

@@ -0,0 +1,47 @@
+package visitor
+
+import (
+	"fmt"
+	"reflect"
+
+	"github.com/z7zmey/php-parser/position"
+
+	"github.com/z7zmey/php-parser/comment"
+	"github.com/z7zmey/php-parser/node"
+)
+
+type Dumper struct {
+	Indent    string
+	Comments  comment.Comments
+	Positions position.Positions
+}
+
+func (d Dumper) EnterNode(n node.Node) bool {
+
+	fmt.Printf("%v%v", d.Indent, reflect.TypeOf(n))
+	if p := d.Positions[n]; p != nil {
+		fmt.Printf(" %v", *p)
+	}
+	if a := n.Attributes(); len(a) > 0 {
+		fmt.Printf(" %v", a)
+	}
+	fmt.Println()
+
+	if c := d.Comments[n]; len(c) > 0 {
+		fmt.Printf("%vComments:\n", d.Indent+"  ")
+		for _, cc := range c {
+			fmt.Printf("%v%q\n", d.Indent+"    ", cc)
+		}
+	}
+
+	return true
+}
+
+func (d Dumper) GetChildrenVisitor(key string) node.Visitor {
+	fmt.Printf("%v%q:\n", d.Indent+"  ", key)
+	return Dumper{d.Indent + "    ", d.Comments, d.Positions}
+}
+
+func (d Dumper) LeaveNode(n node.Node) {
+	// do nothing
+}