diff options
Diffstat (limited to 'django')
| -rw-r--r-- | django/template/base.py | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/django/template/base.py b/django/template/base.py index 6e22fbdcca..7ee23f7ebf 100644 --- a/django/template/base.py +++ b/django/template/base.py @@ -405,7 +405,9 @@ class DebugLexer(Lexer): class Parser: def __init__(self, tokens, libraries=None, builtins=None, origin=None): - self.tokens = tokens + # Reverse the tokens so delete_first_token(), prepend_token(), and + # next_token() can operate at the end of the list in constant time. + self.tokens = list(reversed(tokens)) self.tags = {} self.filters = {} self.command_stack = [] @@ -541,13 +543,13 @@ class Parser: raise self.error(token, msg) def next_token(self): - return self.tokens.pop(0) + return self.tokens.pop() def prepend_token(self, token): - self.tokens.insert(0, token) + self.tokens.append(token) def delete_first_token(self): - del self.tokens[0] + del self.tokens[-1] def add_library(self, lib): self.tags.update(lib.tags) |