move Parser interface to parser package

parser/parser.go

@@ -0,0 +1,18 @@
+package parser
+
+import (
+	"github.com/z7zmey/php-parser/comment"
+	"github.com/z7zmey/php-parser/errors"
+	"github.com/z7zmey/php-parser/node"
+	"github.com/z7zmey/php-parser/position"
+)
+
+// Parser interface
+type Parser interface {
+	Parse() int
+	GetPath() string
+	GetRootNode() node.Node
+	GetErrors() []*errors.Error
+	GetComments() comment.Comments
+	GetPositions() position.Positions
+}