# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1384549399 -3600
# Node ID abb8f39e4c5364b08e4fb13fcecda7b1dc0049b6
# Parent  fc723c1ed25f39f76e05258bcdae20254be8a6ae
Support tuple parameters in the serialised output. Fixed "with" serialisation.

diff -r fc723c1ed25f -r abb8f39e4c53 compiler/ast.py
--- a/compiler/ast.py	Sun Oct 27 01:12:35 2013 +0200
+++ b/compiler/ast.py	Fri Nov 15 22:03:19 2013 +0100
@@ -952,7 +952,8 @@
         return "%sdef %s(%s):%s%s\n" % (
             self.decorators and "%s\n" % "\n".join([("@%s" % decorator) for decorator in self.decorators]) or "",
             self.name,
-            ", ".join(parameters),
+            # NOTE: Handling tuples using str.
+            ", ".join(map(str, parameters)),
             self.doc and "\n\n\t%s\n" % docstring(self.doc) or "",
             indent("\n%s" % self.code)
             )
@@ -1270,7 +1271,8 @@
 
     def __str__(self):
         parameters = decode_function(self)
-        return "lambda %s: %s" % (", ".join(parameters), self.code)
+        # NOTE: Handling tuples using str.
+        return "lambda %s: %s" % (", ".join(map(str, parameters)), self.code)
 
     def visit(self, visitor, *args):
         return visitor.visitLambda(self, *args)
@@ -2068,7 +2070,7 @@
     def __str__(self):
         return "with %s%s:%s" % (
             self.expr,
-            self.vars and " as %s" % ", ".join(map(str, self.vars)),
+            self.vars and (" as %s" % self.vars) or "",
             indent("\n%s" % self.body),
             )