From: Jeremy Hylton <jeremy@alum.mit.edu>
Date: Mon, 17 Dec 2001 23:58:08 +0000 (+0000)
Subject: Backport bugfixes from the trunk.
X-Git-Tag: v2.1.2c1~45
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=2dfc9a3add2424c7d903a889ac9ab33c47f9ce76;p=thirdparty%2FPython%2Fcpython.git

Backport bugfixes from the trunk.

Add __getitem__() to a stack to support visitContinue().
Move mangle() here and define correctly.
---

diff --git a/Tools/compiler/compiler/misc.py b/Tools/compiler/compiler/misc.py
index 29ff86678025..1727401b2d66 100644
--- a/Tools/compiler/compiler/misc.py
+++ b/Tools/compiler/compiler/misc.py
@@ -39,3 +39,29 @@ class Stack:
         self.stack.append(elt)
     def top(self):
         return self.stack[-1]
+    def __getitem__(self, index): # needed by visitContinue()
+        return self.stack[index]
+
+MANGLE_LEN = 256 # magic constant from compile.c
+
+def mangle(name, klass):
+    if not name.startswith('__'):
+        return name
+    if len(name) + 2 >= MANGLE_LEN:
+        return name
+    if name.endswith('__'):
+        return name
+    try:
+        i = 0
+        while klass[i] == '_':
+            i = i + 1
+    except IndexError:
+        return name
+    klass = klass[i:]
+
+    tlen = len(klass) + len(name)
+    if tlen > MANGLE_LEN:
+        klass = klass[:MANGLE_LEN-tlen]
+
+    return "_%s%s" % (klass, name)
+