Attachment defined.patch for http://trac.cython.org/ticket/27

defined.patch

diff -ruw Cython-0.9.8.orig/Cython/Compiler/Scanning.py Cython-0.9.8/Cython/Compiler/Scanning.py
--- Cython-0.9.8.orig/Cython/Compiler/Scanning.py	2008-06-11 14:25:34.000000000 -0400
+++ Cython-0.9.8/Cython/Compiler/Scanning.py	2008-07-17 16:39:27.691882798 -0400
@@ -186,6 +186,9 @@
             else:
                 raise
 
+    def defined(self, name):
+        return name in self.entries
+
 def initial_compile_time_env():
     benv = CompileTimeScope()
     names = ('UNAME_SYSNAME', 'UNAME_NODENAME', 'UNAME_RELEASE',
@@ -201,6 +204,7 @@
     for name in names:
         benv.declare(name, getattr(__builtin__, name))
     denv = CompileTimeScope(benv)
+    denv.declare('DEFINED', denv.defined)
     return denv
 
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