JS: classify numeric file names as generated

Author: Esben Sparre Andreasen

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

@@ -154,6 +154,13 @@ private int countStartingHtmlElements(File f, int l) {
   result = strictcount(getAStartingElement(f, l))
 }
 
+/**
+ * Holds if the base name of `f` is a number followed by a single extension.
+ */
+predicate isGenerateFileName(File f) {
+  f.getStem().regexpMatch("[0-9]+")
+}
+
 /**
  * Holds if `tl` looks like it contains generated code.
  */
@@ -166,7 +173,8 @@ predicate isGenerated(TopLevel tl) {
   hasManyInvocations(tl) or
   isData(tl.getFile()) or
   isJsonLine(tl.getFile()) or
-  isGeneratedHtml(tl.getFile())
+  isGeneratedHtml(tl.getFile()) or
+  isGenerateFileName(tl.getFile())
 }
 
 /**

javascript/ql/test/query-tests/filters/ClassifyFiles/01.chapter-about-things.js

@@ -0,0 +1 @@
+var x = 42;

javascript/ql/test/query-tests/filters/ClassifyFiles/1.js

@@ -0,0 +1 @@
+var x = 42;

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

@@ -1,3 +1,4 @@
+| 1.js:0:0:0:0 | 1.js | generated |
 | 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 |