From f3638222d895857cd44010d8cbf358ca72e49ea4 Mon Sep 17 00:00:00 2001
From: ArnaudBuchholz <arnaud.buchholz@free.fr>
Date: Wed, 11 Dec 2019 13:22:50 -0500
Subject: [PATCH] Increase maintainability (#326)

---
 src/xml/xpath/parser.js | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/src/xml/xpath/parser.js b/src/xml/xpath/parser.js
index 34f3f7b1..652042d3 100644
--- a/src/xml/xpath/parser.js
+++ b/src/xml/xpath/parser.js
@@ -117,12 +117,12 @@ function _gpfXmlXPathParse (xpathExpression) {
     }
 
     function level () {
-        var relative = Boolean(consumeIfTokenMatch(_GPF_XML_XPATH_TOKEN.CURRENT)),
+        var relative,
             chain = new _GpfXmlXPathChain(),
             subOrDeep,
             operator;
-        subOrDeep = consumeIfTokenMatch(_GPF_XML_XPATH_TOKEN.SUB, _GPF_XML_XPATH_TOKEN.DEEP);
-        if (!subOrDeep) {
+
+        function firstLevelNoSubOrDeep () {
             if (relative) {
                 gpf.Error.invalidXPathSyntax();
             }
@@ -131,6 +131,16 @@ function _gpfXmlXPathParse (xpathExpression) {
                 token: _GPF_XML_XPATH_TOKEN.SUB
             };
         }
+
+        function firstLevel () {
+            relative = Boolean(consumeIfTokenMatch(_GPF_XML_XPATH_TOKEN.CURRENT));
+            subOrDeep = consumeIfTokenMatch(_GPF_XML_XPATH_TOKEN.SUB, _GPF_XML_XPATH_TOKEN.DEEP);
+            if (!subOrDeep) {
+                firstLevelNoSubOrDeep();
+            }
+        }
+
+        firstLevel();
         while (subOrDeep) {
             operator = new levelClasses[subOrDeep.token](relative);
             operator.addChild(match());