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Refs #32919 -- Simplified Lexer.create_token() by reorganizing blocks.

This commit is contained in:
Chris Jerdonek 2021-08-03 11:21:22 -04:00 committed by Mariusz Felisiak
parent 7ff72b5909
commit 55cf9e93b5
1 changed files with 27 additions and 21 deletions
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40
django/template/base.py
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@ -367,26 +367,32 @@ class Lexer:
If in_tag is True, we are processing something that matched a tag,
otherwise it should be treated as a literal string.
"""
if in_tag:
# The [0:2] and [2:-2] ranges below strip off *_TAG_START and
# *_TAG_END. The 2's are hard-coded for performance. Using
# len(BLOCK_TAG_START) would permit BLOCK_TAG_START to be
# different, but it's not likely that the TAG_START values will
# change anytime soon.
token_start = token_string[0:2]
if in_tag and token_start == BLOCK_TAG_START:
# The [2:-2] ranges below strip off *_TAG_START and *_TAG_END.
# We could do len(BLOCK_TAG_START) to be more "correct", but we've
# hard-coded the 2s here for performance. And it's not like
# the TAG_START values are going to change anytime, anyway.
block_content = token_string[2:-2].strip()
if self.verbatim and block_content == self.verbatim:
self.verbatim = False
if in_tag and not self.verbatim:
if token_start == VARIABLE_TAG_START:
return Token(TokenType.VAR, token_string[2:-2].strip(), position, lineno)
elif token_start == BLOCK_TAG_START:
if block_content[:9] in ('verbatim', 'verbatim '):
self.verbatim = 'end%s' % block_content
return Token(TokenType.BLOCK, block_content, position, lineno)
assert token_start == COMMENT_TAG_START
if token_start == BLOCK_TAG_START:
content = token_string[2:-2].strip()
if self.verbatim:
# Then a verbatim block is being processed.
if content != self.verbatim:
return Token(TokenType.TEXT, token_string, position, lineno)
# Otherwise, the current verbatim block is ending.
self.verbatim = False
elif content[:9] in ('verbatim', 'verbatim '):
# Then a verbatim block is starting.
self.verbatim = 'end%s' % content
return Token(TokenType.BLOCK, content, position, lineno)
if not self.verbatim:
content = token_string[2:-2].strip()
if token_start == VARIABLE_TAG_START:
return Token(TokenType.VAR, content, position, lineno)
# BLOCK_TAG_START was handled above.
assert token_start == COMMENT_TAG_START
return Token(TokenType.COMMENT, content, position, lineno)
else:
return Token(TokenType.TEXT, token_string, position, lineno)