Detect CoffeeScript with generated comment

lib/linguist/blob_helper.rb

@@ -280,6 +280,11 @@ module Linguist
     def generated_coffeescript?
       return unless extname == '.js'
 
+      # CoffeeScript generated by > 1.2 include a comment on the first line
+      if lines[0] =~ /^\/\/ Generated by /
+        return true
+      end
+
       if lines[0] == '(function() {' &&     # First line is module closure opening
           lines[-2] == '}).call(this);' &&  # Second to last line closes module closure
           lines[-1] == ''                   # Last line is blank

test/fixtures/coffee/classes-old.js

@@ -0,0 +1,46 @@
+(function() {
+  var Animal, Horse, Snake, sam, tom;
+  var __hasProp = Object.prototype.hasOwnProperty, __extends = function(child, parent) {
+    for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; }
+    function ctor() { this.constructor = child; }
+    ctor.prototype = parent.prototype;
+    child.prototype = new ctor;
+    child.__super__ = parent.prototype;
+    return child;
+  };
+  Animal = (function() {
+    function Animal(name) {
+      this.name = name;
+    }
+    Animal.prototype.move = function(meters) {
+      return alert(this.name + " moved " + meters + "m.");
+    };
+    return Animal;
+  })();
+  Snake = (function() {
+    __extends(Snake, Animal);
+    function Snake() {
+      Snake.__super__.constructor.apply(this, arguments);
+    }
+    Snake.prototype.move = function() {
+      alert("Slithering...");
+      return Snake.__super__.move.call(this, 5);
+    };
+    return Snake;
+  })();
+  Horse = (function() {
+    __extends(Horse, Animal);
+    function Horse() {
+      Horse.__super__.constructor.apply(this, arguments);
+    }
+    Horse.prototype.move = function() {
+      alert("Galloping...");
+      return Horse.__super__.move.call(this, 45);
+    };
+    return Horse;
+  })();
+  sam = new Snake("Sammy the Python");
+  tom = new Horse("Tommy the Palomino");
+  sam.move();
+  tom.move();
+}).call(this);

test/fixtures/coffee/classes.js

@@ -1,46 +1,69 @@
+// Generated by CoffeeScript 1.2.1
 (function() {
-  var Animal, Horse, Snake, sam, tom;
+  var Animal, Horse, Snake, sam, tom,
-  var __hasProp = Object.prototype.hasOwnProperty, __extends = function(child, parent) {
+    __hasProp = {}.hasOwnProperty,
-    for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; }
+    __extends = function(child, parent) { for (var key in parent) { if (__hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor; child.__super__ = parent.prototype; return child; };
-    function ctor() { this.constructor = child; }
+
-    ctor.prototype = parent.prototype;
-    child.prototype = new ctor;
-    child.__super__ = parent.prototype;
-    return child;
-  };
   Animal = (function() {
+
+    Animal.name = 'Animal';
+
     function Animal(name) {
       this.name = name;
     }
+
     Animal.prototype.move = function(meters) {
       return alert(this.name + " moved " + meters + "m.");
     };
+
     return Animal;
+
   })();
-  Snake = (function() {
+
-    __extends(Snake, Animal);
+  Snake = (function(_super) {
+
+    __extends(Snake, _super);
+
+    Snake.name = 'Snake';
+
     function Snake() {
-      Snake.__super__.constructor.apply(this, arguments);
+      return Snake.__super__.constructor.apply(this, arguments);
     }
+
     Snake.prototype.move = function() {
       alert("Slithering...");
       return Snake.__super__.move.call(this, 5);
     };
+
     return Snake;
-  })();
+
-  Horse = (function() {
+  })(Animal);
-    __extends(Horse, Animal);
+
+  Horse = (function(_super) {
+
+    __extends(Horse, _super);
+
+    Horse.name = 'Horse';
+
     function Horse() {
-      Horse.__super__.constructor.apply(this, arguments);
+      return Horse.__super__.constructor.apply(this, arguments);
     }
+
     Horse.prototype.move = function() {
       alert("Galloping...");
       return Horse.__super__.move.call(this, 45);
     };
+
     return Horse;
-  })();
+
+  })(Animal);
+
   sam = new Snake("Sammy the Python");
+
   tom = new Horse("Tommy the Palomino");
+
   sam.move();
+
   tom.move();
+
 }).call(this);

test/fixtures/coffee/intro-old.js

@@ -0,0 +1,37 @@
+(function() {
+  var cubes, list, math, num, number, opposite, race, square;
+  var __slice = Array.prototype.slice;
+  number = 42;
+  opposite = true;
+  if (opposite) {
+    number = -42;
+  }
+  square = function(x) {
+    return x * x;
+  };
+  list = [1, 2, 3, 4, 5];
+  math = {
+    root: Math.sqrt,
+    square: square,
+    cube: function(x) {
+      return x * square(x);
+    }
+  };
+  race = function() {
+    var runners, winner;
+    winner = arguments[0], runners = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
+    return print(winner, runners);
+  };
+  if (typeof elvis !== "undefined" && elvis !== null) {
+    alert("I knew it!");
+  }
+  cubes = (function() {
+    var _i, _len, _results;
+    _results = [];
+    for (_i = 0, _len = list.length; _i < _len; _i++) {
+      num = list[_i];
+      _results.push(math.cube(num));
+    }
+    return _results;
+  })();
+}).call(this);

test/fixtures/coffee/intro.js

@@ -1,15 +1,20 @@
+// Generated by CoffeeScript 1.2.1
 (function() {
-  var cubes, list, math, num, number, opposite, race, square;
+  var cubes, list, math, num, number, opposite, race, square,
-  var __slice = Array.prototype.slice;
+    __slice = [].slice;
+
   number = 42;
+
   opposite = true;
-  if (opposite) {
+
-    number = -42;
+  if (opposite) number = -42;
-  }
+
   square = function(x) {
     return x * x;
   };
+
   list = [1, 2, 3, 4, 5];
+
   math = {
     root: Math.sqrt,
     square: square,
@@ -17,14 +22,15 @@
       return x * square(x);
     }
   };
+
   race = function() {
     var runners, winner;
     winner = arguments[0], runners = 2 <= arguments.length ? __slice.call(arguments, 1) : [];
     return print(winner, runners);
   };
-  if (typeof elvis !== "undefined" && elvis !== null) {
+
-    alert("I knew it!");
+  if (typeof elvis !== "undefined" && elvis !== null) alert("I knew it!");
-  }
+
   cubes = (function() {
     var _i, _len, _results;
     _results = [];
@@ -34,4 +40,5 @@
     }
     return _results;
   })();
+
 }).call(this);

test/test_blob.rb

@@ -165,6 +165,9 @@ class TestBlob < Test::Unit::TestCase
     assert !blob("coffee/empty.js").generated?
     assert !blob("coffee/hello.js").generated?
 
+    assert blob("coffee/intro-old.js").generated?
+    assert blob("coffee/classes-old.js").generated?
+
     assert blob("coffee/intro.js").generated?
     assert blob("coffee/classes.js").generated?
   end