Merge de4ac54 into 229b804

camisole/languages/__init__.py

@@ -51,6 +51,7 @@ def load_from_environ():
     'pascal',
     'perl',
     'php',
+    'prolog',
     'python',
     'ruby',
     'rust',

camisole/languages/prolog.py

@@ -0,0 +1,9 @@
+from camisole.models import Lang, Program
+
+
+class Prolog(Lang):
+    source_ext = '.pl'
+    interpreter = Program('swipl',
+                          opts=['--quiet', '-t', 'halt'],
+                          version_opt='--version')
+    reference_source = r":- write('42\n')."

camisole/models.py

@@ -240,6 +240,9 @@ def source_filename(self):
         return 'source' + self.source_ext
 
     def execute_filename(self):
+        if self.compiler is None and self.source_ext:
+            return 'compiled' + self.source_ext
+
         return 'compiled'
 
     @staticmethod