Merge pull request #9 from JanDC/ignore-improper-selectors

If no expression can be build, the selector is invalid
JanDC · Mar 13, 2018 · 68cb064 · 68cb064
2 parents 9a6f2e3 + 5cd5ffe
commit 68cb064
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/src/CssFromHTMLExtractor.php b/src/CssFromHTMLExtractor.php
@@ -149,6 +149,10 @@ function (Rule $rule) use ($xPath, $cssIdentifier, $htmlIdentifier) {
 
                 $expression = $this->buildExpressionForSelector($rule->getSelector());
 
+                if (!$expression) {
+                    return false;
+                }
+
                 /** @var DOMNodeList $elements */
                 $elements = $xPath->query($expression);