JS: support purs classification

Author: Esben Sparre Andreasen

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

@@ -42,7 +42,7 @@ class CodeGeneratorMarkerComment extends GeneratedCodeMarkerComment {
  */
 private predicate codeGeneratorMarkerComment(Comment c, string tool) {
   exists (string toolPattern |
-    toolPattern = "js_of_ocaml|CoffeeScript|LiveScript|dart2js|ANTLR|PEG\\.js|Opal|JSX|jison(?:-lex)?|(?:Microsoft \\(R\\) AutoRest Code Generator)" and
+    toolPattern = "js_of_ocaml|CoffeeScript|LiveScript|dart2js|ANTLR|PEG\\.js|Opal|JSX|jison(?:-lex)?|(?:Microsoft \\(R\\) AutoRest Code Generator)|purs" and
     tool = c.getText().regexpCapture("(?s)[\\s*]*(?:parser |Code )?[gG]eneratedy? (?:from .*)?by (" + toolPattern + ")\\b.*", 1)
   )
 }

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

@@ -21,6 +21,8 @@
 | pandoc.html:0:0:0:0 | pandoc.html | generated |
 | peg-js.js:0:0:0:0 | peg-js.js | generated |
 | polymer.html:0:0:0:0 | polymer.html | template |
+| purs-bundle.js:0:0:0:0 | purs-bundle.js | generated |
+| purs.js:0:0:0:0 | purs.js | generated |
 | some-template.html:0:0:0:0 | some-template.html | template |
 | templ.js:0:0:0:0 | templ.js | template |
 | textmate.html:0:0:0:0 | textmate.html | generated |

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

@@ -5,4 +5,6 @@
 | jsx.js:1:1:1:105 | // gene ... 977102) | JSX |
 | opal-test.js:1:1:1:30 | /* Gene ... 10.3 */ | Opal |
 | peg-js.js:2:3:6:5 | /*\\n   * ... /\\n   */ | PEG.js |
+| purs-bundle.js:1:1:1:34 | // Gene ...  0.11.7 | purs |
+| purs.js:1:1:1:35 | // Gene ...  0.11.7 | purs |
 | tst.dart.js:1:1:1:57 | // Gene ... mpiler. | dart2js |