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# Description: Fix the tokenizer so comment docstrings work with Python 2.6.
# Bug: https://sourceforge.net/tracker/index.php?func=detail&aid=2585292&group_id=32455&atid=405618
# Bug-Debian: http://bugs.debian.org/590112
# Origin: https://sourceforge.net/tracker/?func=detail&aid=2872545&group_id=32455&atid=405620
# Author: Andre Malo (ndparker)
# Reviewed-by: Kenneth J. Pronovici <pronovic@debian.org>
--- a/epydoc/docparser.py
+++ b/epydoc/docparser.py
@@ -72,6 +72,26 @@
from epydoc.compat import *
######################################################################
+## Tokenizer change in 2.6
+######################################################################
+
+def comment_includes_nl():
+ """ Determine whether comments are parsed as one or two tokens... """
+ readline = iter(u'\n#\n\n'.splitlines(True)).next
+ tokens = [
+ token.tok_name[tup[0]] for tup in tokenize.generate_tokens(readline)
+ ]
+ if tokens == ['NL', 'COMMENT', 'NL', 'ENDMARKER']:
+ return True
+ elif tokens == ['NL', 'COMMENT', 'NL', 'NL', 'ENDMARKER']:
+ return False
+ raise AssertionError(
+ "Tokenizer returns unexexpected tokens: %r" % tokens
+ )
+
+comment_includes_nl = comment_includes_nl()
+
+######################################################################
## Doc Parser
######################################################################
@@ -520,6 +540,10 @@
# inside that block, not outside it.
start_group = None
+ # If the comment tokens do not include the NL, every comment token
+ # sets this to True in order to swallow the next NL token unprocessed.
+ comment_nl_waiting = False
+
# Check if the source file declares an encoding.
encoding = get_module_encoding(module_doc.filename)
@@ -570,7 +594,9 @@
# then discard them: blank lines are not allowed between a
# comment block and the thing it describes.
elif toktype == tokenize.NL:
- if comments and not line_toks:
+ if comment_nl_waiting:
+ comment_nl_waiting = False
+ elif comments and not line_toks:
log.warning('Ignoring docstring comment block followed by '
'a blank line in %r on line %r' %
(module_doc.filename, srow-1))
@@ -578,6 +604,7 @@
# Comment token: add to comments if appropriate.
elif toktype == tokenize.COMMENT:
+ comment_nl_waiting = not comment_includes_nl
if toktext.startswith(COMMENT_DOCSTRING_MARKER):
comment_line = toktext[len(COMMENT_DOCSTRING_MARKER):].rstrip()
if comment_line.startswith(" "):
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