JS: classify HTML files with > 20 elements on a line as generated

Author: Esben Sparre Andreasen

javascript/ql/src/semmle/javascript/GeneratedCode.qll

@@ -121,6 +121,23 @@ private predicate isGeneratedHtml(File f) {
     e.getName() = "meta" and
     e.getAttributeByName("name").getValue() = "generator"
   )
+  or
+  20 < countStartingHtmlElements(f, _)
+}
+
+/**
+ * Gets an element that starts at line `l` in file `f`.
+ */
+private HTML::Element getAStartingElement(File f, int l) {
+  result.getFile() = f and result.getLocation().getStartLine() = l
+}
+
+
+/**
+ * Gets the number of HTML elements that starts at line `l` in file `f`.
+ */
+private int countStartingHtmlElements(File f, int l) {
+  result = strictcount(getAStartingElement(f, l))
 }
 
 /**

javascript/ql/test/query-tests/filters/ClassifyFiles/ClassifyFiles.expected

@@ -1,4 +1,5 @@
 | AutoRest.js:0:0:0:0 | AutoRest.js | generated |
+| ManyElementsOnLine.html:0:0:0:0 | ManyElementsOnLine.html | generated |
 | ai.1.2.3-build0123.js:0:0:0:0 | ai.1.2.3-build0123.js | library |
 | bundle-directive.js:0:0:0:0 | bundle-directive.js | generated |
 | data.js:0:0:0:0 | data.js | generated |