Initial QSfera import

Server/vendor/github.com/vektah/gqlparser/v2/ast/comment.go

@@ -0,0 +1,31 @@
+package ast
+
+import (
+	"strconv"
+	"strings"
+)
+
+type Comment struct {
+	Value    string
+	Position *Position
+}
+
+func (c *Comment) Text() string {
+	return strings.TrimPrefix(c.Value, "#")
+}
+
+type CommentGroup struct {
+	List []*Comment
+}
+
+func (c *CommentGroup) Dump() string {
+	if len(c.List) == 0 {
+		return ""
+	}
+	var builder strings.Builder
+	for _, comment := range c.List {
+		builder.WriteString(comment.Value)
+		builder.WriteString("\n")
+	}
+	return strconv.Quote(builder.String())
+}