Fix decorators for 2.3.

Cython/Compiler/Dependencies.py

@@ -5,7 +5,7 @@ from distutils.extension import Extension
 
 from Cython import Utils
 
-
+# Unfortunately, Python 2.3 doesn't support decorators.
 def cached_method(f):
     cache_name = '__%s_cache' % f.__name__
     def wrapper(self, *args):
@@ -199,11 +199,12 @@ class DependencyTree(object):
         self.context = context
         self._transitive_cache = {}
     
-    @cached_method
+    #@cached_method
     def parse_dependencies(self, source_filename):
         return parse_dependencies(source_filename)
+    parse_dependencies = cached_method(parse_dependencies)
     
-    @cached_method
+    #@cached_method
     def cimports_and_externs(self, filename):
         cimports, includes, externs = self.parse_dependencies(filename)[:3]
         cimports = set(cimports)
@@ -213,22 +214,25 @@ class DependencyTree(object):
             cimports.update(a)
             externs.update(b)
         return tuple(cimports), tuple(externs)
+    cimports_and_externs = cached_method(cimports_and_externs)
     
     def cimports(self, filename):
         return self.cimports_and_externs(filename)[0]
     
-    @cached_method
+    #@cached_method
     def package(self, filename):
         dir = os.path.dirname(filename)
         if os.path.exists(os.path.join(dir, '__init__.py')):
             return self.package(dir) + (os.path.basename(dir),)
         else:
             return ()
+    package = cached_method(package)
     
-    @cached_method
+    #@cached_method
     def fully_qualifeid_name(self, filename):
         module = os.path.splitext(os.path.basename(filename))[0]
         return '.'.join(self.package(filename) + (module,))
+    fully_qualifeid_name = cached_method(fully_qualifeid_name)
     
     def find_pxd(self, module, filename=None):
         if module[0] == '.':
@@ -240,7 +244,7 @@ class DependencyTree(object):
                 return pxd
         return self.context.find_pxd_file(module, None)
         
-    @cached_method
+    #@cached_method
     def cimported_files(self, filename):
         if filename[-4:] == '.pyx' and os.path.exists(filename[:-4] + '.pxd'):
             self_pxd = [filename[:-4] + '.pxd']
@@ -253,6 +257,7 @@ class DependencyTree(object):
             print ("\n\t".join(a))
             print ("\n\t".join(b))
         return tuple(self_pxd + filter(None, [self.find_pxd(m, filename) for m in self.cimports(filename)]))
+    cimported_files = cached_method(cimported_files)
     
     def immediate_dependencies(self, filename):
         all = list(self.cimported_files(filename))
@@ -260,9 +265,10 @@ class DependencyTree(object):
             all.append(os.path.normpath(os.path.join(os.path.dirname(filename), extern)))
         return tuple(all)
     
-    @cached_method
+    #@cached_method
     def timestamp(self, filename):
         return os.path.getmtime(filename)
+    timestamp = cached_method(timestamp)
     
     def extract_timestamp(self, filename):
         # TODO: .h files from extern blocks