REF: make Utils dependency-free by moving search_include_directories to Main

Cython/Compiler/Main.py

@@ -265,7 +265,7 @@ class Context(object):
 
     def search_include_directories(self, qualified_name, suffix, pos,
                                    include=False, sys_path=False):
-        return Utils.search_include_directories(
+        return search_include_directories(
             tuple(self.include_directories), qualified_name, suffix, pos, include, sys_path)
 
     def find_root_package_dir(self, file_path):
@@ -753,6 +753,60 @@ def compile(source, options = None, full_module_name = None, **kwds):
         return compile_multiple(source, options)
 
 
+@Utils.cached_function
+def search_include_directories(dirs, qualified_name, suffix, pos,
+                               include=False, sys_path=False):
+    """
+    Search the list of include directories for the given file name.
+
+    If a source file position is given, first searches the directory
+    containing that file. Returns None if not found, but does not
+    report an error.
+
+    The 'include' option will disable package dereferencing.
+    If 'sys_path' is True, also search sys.path.
+    """
+    if sys_path:
+        dirs = dirs + tuple(sys.path)
+
+    if pos:
+        file_desc = pos[0]
+        if not isinstance(file_desc, FileSourceDescriptor):
+            raise RuntimeError("Only file sources for code supported")
+        if include:
+            dirs = (os.path.dirname(file_desc.filename),) + dirs
+        else:
+            dirs = (Utils.find_root_package_dir(file_desc.filename),) + dirs
+
+    dotted_filename = qualified_name
+    if suffix:
+        dotted_filename += suffix
+
+    if not include:
+        names = qualified_name.split('.')
+        package_names = tuple(names[:-1])
+        module_name = names[-1]
+        module_filename = module_name + suffix
+        package_filename = "__init__" + suffix
+
+    for dirname in dirs:
+        path = os.path.join(dirname, dotted_filename)
+        if os.path.exists(path):
+            return path
+
+        if not include:
+            package_dir = Utils.check_package_dir(dirname, package_names)
+            if package_dir is not None:
+                path = os.path.join(package_dir, module_filename)
+                if os.path.exists(path):
+                    return path
+                path = os.path.join(dirname, package_dir, module_name,
+                                    package_filename)
+                if os.path.exists(path):
+                    return path
+    return None
+
+
 # ------------------------------------------------------------------------
 #
 #  Main command-line entry point

Cython/Utils.py

@@ -135,54 +135,6 @@ def copy_file_to_dir_if_newer(sourcefile, destdir):
     shutil.copy2(sourcefile, destfile)
 
 
-@cached_function
-def search_include_directories(dirs, qualified_name, suffix, pos,
-                               include=False, sys_path=False):
-    # Search the list of include directories for the given
-    # file name. If a source file position is given, first
-    # searches the directory containing that file. Returns
-    # None if not found, but does not report an error.
-    # The 'include' option will disable package dereferencing.
-    # If 'sys_path' is True, also search sys.path.
-    if sys_path:
-        dirs = dirs + tuple(sys.path)
-    if pos:
-        file_desc = pos[0]
-        from Cython.Compiler.Scanning import FileSourceDescriptor
-        if not isinstance(file_desc, FileSourceDescriptor):
-            raise RuntimeError("Only file sources for code supported")
-        if include:
-            dirs = (os.path.dirname(file_desc.filename),) + dirs
-        else:
-            dirs = (find_root_package_dir(file_desc.filename),) + dirs
-
-    dotted_filename = qualified_name
-    if suffix:
-        dotted_filename += suffix
-    if not include:
-        names = qualified_name.split('.')
-        package_names = tuple(names[:-1])
-        module_name = names[-1]
-        module_filename = module_name + suffix
-        package_filename = "__init__" + suffix
-
-    for dirname in dirs:
-        path = os.path.join(dirname, dotted_filename)
-        if path_exists(path):
-            return path
-        if not include:
-            package_dir = check_package_dir(dirname, package_names)
-            if package_dir is not None:
-                path = os.path.join(package_dir, module_filename)
-                if path_exists(path):
-                    return path
-                path = os.path.join(dirname, package_dir, module_name,
-                                    package_filename)
-                if path_exists(path):
-                    return path
-    return None
-
-
 @cached_function
 def find_root_package_dir(file_path):
     dir = os.path.dirname(file_path)