Fixes: #61. Allows subsequent text blocks.

notedown/notedown.py

@@ -264,37 +264,30 @@ def parse_blocks(self, text):
  code_matches = [m for m in self.code_pattern.finditer(text)]
 
  # determine where the limits of the non code bits are
- # based on the code block edges
+ # based on the code block edges and save the block
+ # edge to merge code and text blocks.
  text_starts = [0] + [m.end() for m in code_matches]
  text_stops = [m.start() for m in code_matches] + [len(text)]
  text_limits = list(zip(text_starts, text_stops))
 
  # list of the groups from the code blocks
- code_blocks = [self.new_code_block(**m.groupdict())
+ code_blocks = [(m.start(), self.new_code_block(**m.groupdict()))
  for m in code_matches]
 
- text_blocks = [self.new_text_block(content=text[i:j])
+ text_blocks = [(i, self.new_text_block(content=text[i:j]))
  for i, j in text_limits]
 
  # remove indents
- list(map(self.pre_process_code_block, code_blocks))
+ for pos, block in code_blocks:
+ self.pre_process_code_block(block)
  # remove blank line at start and end of markdown
- list(map(self.pre_process_text_block, text_blocks))
-
- # create a list of the right length
- all_blocks = list(range(len(text_blocks) + len(code_blocks)))
-
- # NOTE: the behaviour here is a bit fragile in that we
- # assume that cells must alternate between code and
- # markdown. This isn't the case, as we could have
- # consecutive code cells, and we get around this by
- # stripping out empty cells. i.e. two consecutive code cells
- # have an empty markdown cell between them which is stripped
- # out because it is empty.
-
- # cells must alternate in order
- all_blocks[::2] = text_blocks
- all_blocks[1::2] = code_blocks
+ for pos, block in text_blocks:
+ self.pre_process_text_block(block)
+
+ # Merge back text and code blocks using the
+ # start position.
+ all_blocks = sorted(text_blocks + code_blocks, key=lambda x: x[0])
+ all_blocks = [block for pos, block in all_blocks]
 
  # remove possible empty text cells
  all_blocks = [cell for cell in all_blocks if cell['content']]