diff options
Diffstat (limited to 'Lib/email/feedparser.py')
| -rw-r--r-- | Lib/email/feedparser.py | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/Lib/email/feedparser.py b/Lib/email/feedparser.py index c95b27f12f..e2e3e96a15 100644 --- a/Lib/email/feedparser.py +++ b/Lib/email/feedparser.py @@ -26,6 +26,7 @@ import re from email import errors from email import message from email._policybase import compat32 +from collections import deque NLCRE = re.compile('\r\n|\r|\n') NLCRE_bol = re.compile('(\r\n|\r|\n)') @@ -52,8 +53,8 @@ class BufferedSubFile(object): def __init__(self): # Chunks of the last partial line pushed into this object. self._partial = [] - # The list of full, pushed lines, in reverse order - self._lines = [] + # A deque of full, pushed lines + self._lines = deque() # The stack of false-EOF checking predicates. self._eofstack = [] # A flag indicating whether the file has been closed or not. @@ -78,21 +79,21 @@ class BufferedSubFile(object): return NeedMoreData # Pop the line off the stack and see if it matches the current # false-EOF predicate. - line = self._lines.pop() + line = self._lines.popleft() # RFC 2046, section 5.1.2 requires us to recognize outer level # boundaries at any level of inner nesting. Do this, but be sure it's # in the order of most to least nested. - for ateof in self._eofstack[::-1]: + for ateof in reversed(self._eofstack): if ateof(line): # We're at the false EOF. But push the last line back first. - self._lines.append(line) + self._lines.appendleft(line) return '' return line def unreadline(self, line): # Let the consumer push a line back into the buffer. assert line is not NeedMoreData - self._lines.append(line) + self._lines.appendleft(line) def push(self, data): """Push some new data into this object.""" @@ -119,8 +120,7 @@ class BufferedSubFile(object): self.pushlines(parts) def pushlines(self, lines): - # Reverse and insert at the front of the lines. - self._lines[:0] = lines[::-1] + self._lines.extend(lines) def __iter__(self): return self |