AppPkg/Applications/Python: Add Python 2.7.2 sources since the release of Python...

[mirror_edk2.git] / AppPkg / Applications / Python / Python-2.7.2 / Lib / lib2to3 / fixes / fix_itertools_imports.py

diff --git a/AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/fixes/fix_itertools_imports.py b/AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/fixes/fix_itertools_imports.py
new file mode 100644 (file)
index 0000000..8758fb9
--- /dev/null
+++ b/AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/fixes/fix_itertools_imports.py
@@ -0,0 +1,57 @@
+""" Fixer for imports of itertools.(imap|ifilter|izip|ifilterfalse) """\r
+\r
+# Local imports\r
+from lib2to3 import fixer_base\r
+from lib2to3.fixer_util import BlankLine, syms, token\r
+\r
+\r
+class FixItertoolsImports(fixer_base.BaseFix):\r
+    BM_compatible = True\r
+    PATTERN = """\r
+              import_from< 'from' 'itertools' 'import' imports=any >\r
+              """ %(locals())\r
+\r
+    def transform(self, node, results):\r
+        imports = results['imports']\r
+        if imports.type == syms.import_as_name or not imports.children:\r
+            children = [imports]\r
+        else:\r
+            children = imports.children\r
+        for child in children[::2]:\r
+            if child.type == token.NAME:\r
+                member = child.value\r
+                name_node = child\r
+            elif child.type == token.STAR:\r
+                # Just leave the import as is.\r
+                return\r
+            else:\r
+                assert child.type == syms.import_as_name\r
+                name_node = child.children[0]\r
+            member_name = name_node.value\r
+            if member_name in (u'imap', u'izip', u'ifilter'):\r
+                child.value = None\r
+                child.remove()\r
+            elif member_name in (u'ifilterfalse', u'izip_longest'):\r
+                node.changed()\r
+                name_node.value = (u'filterfalse' if member_name[1] == u'f'\r
+                                   else u'zip_longest')\r
+\r
+        # Make sure the import statement is still sane\r
+        children = imports.children[:] or [imports]\r
+        remove_comma = True\r
+        for child in children:\r
+            if remove_comma and child.type == token.COMMA:\r
+                child.remove()\r
+            else:\r
+                remove_comma ^= True\r
+\r
+        while children and children[-1].type == token.COMMA:\r
+            children.pop().remove()\r
+\r
+        # If there are no imports left, just get rid of the entire statement\r
+        if (not (imports.children or getattr(imports, 'value', None)) or\r
+            imports.parent is None):\r
+            p = node.prefix\r
+            node = BlankLine()\r
+            node.prefix = p\r
+            return node\r