From e6b715fc4e0bf6afc653240c2051d97e517ab558 Mon Sep 17 00:00:00 2001
From: Marion <marion.zepf@gmail.com>
Date: Fri, 16 Aug 2013 13:43:02 +0000
Subject: convert Call ASTs to numbers by wrapping float(...) around them

---
diff --git a/TurtleArt/taprimitive.py b/TurtleArt/taprimitive.py
index 6f83294..5c44d63 100644
--- a/TurtleArt/taprimitive.py
+++ b/TurtleArt/taprimitive.py
@@ -675,7 +675,9 @@ class Primitive(object):
         3. Convert a single character to its ASCII integer value.
         4. Extract the first element of a list and convert it to a number.
         5. Convert a Color to a float.
-        Return None if the value cannot be converted to a number. """
+        If the value cannot be converted to a number and the value is not
+        an AST, return None. If it is an AST, return an AST representing
+        `float(value)'. """ # TODO find a better solution
         # 1. number
         if isinstance(value, (float, int, long, ast.Num)):
             return value
@@ -696,11 +698,11 @@ class Primitive(object):
                 conversion_ast = Primitive.convert_for_cmp(value_ast,
                                                            decimal_point)
                 if not isinstance(conversion_ast, ast.Num):
-                    return None
+                    converted = None
             else:
                 converted = Primitive.convert_for_cmp(value, decimal_point)
                 if not isinstance(converted, (float, int, long)):
-                    return None
+                    converted = None
         # 4. list
         elif isinstance(value, list):
             if value:
@@ -710,14 +712,18 @@ class Primitive(object):
                 else:
                     converted = number
             else:
-                return None
+                converted = None
+                if convert_to_ast:
+                    conversion_ast = get_call_ast('float', [value_ast])
         # 5. Color
         elif isinstance(value, Color):
             converted = float(value)
             if convert_to_ast:
                 conversion_ast = get_call_ast('float', [value_ast])
         else:
-            return None
+            converted = None
+            if convert_to_ast:
+                conversion_ast = get_call_ast('float', [value_ast])
 
         if convert_to_ast:
             if conversion_ast is None:
--
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