tables.py 文件源码

def check_list_content(self, node):
        if len(node) != 1 or not isinstance(node[0], nodes.bullet_list):
            error = self.state_machine.reporter.error(
                'Error parsing content block for the "%s" directive: '
                'exactly one bullet list expected.' % self.name,
                nodes.literal_block(self.block_text, self.block_text),
                line=self.lineno)
            raise SystemMessagePropagation(error)
        list_node = node[0]
        # Check for a uniform two-level bullet list:
        for item_index in range(len(list_node)):
            item = list_node[item_index]
            if len(item) != 1 or not isinstance(item[0], nodes.bullet_list):
                error = self.state_machine.reporter.error(
                    'Error parsing content block for the "%s" directive: '
                    'two-level bullet list expected, but row %s does not '
                    'contain a second-level bullet list.'
                    % (self.name, item_index + 1), nodes.literal_block(
                    self.block_text, self.block_text), line=self.lineno)
                raise SystemMessagePropagation(error)
            elif item_index:
                # ATTN pychecker users: num_cols is guaranteed to be set in the
                # "else" clause below for item_index==0, before this branch is
                # triggered.
                if len(item[0]) != num_cols:
                    error = self.state_machine.reporter.error(
                        'Error parsing content block for the "%s" directive: '
                        'uniform two-level bullet list expected, but row %s '
                        'does not contain the same number of items as row 1 '
                        '(%s vs %s).'
                        % (self.name, item_index + 1, len(item[0]), num_cols),
                        nodes.literal_block(self.block_text, self.block_text),
                        line=self.lineno)
                    raise SystemMessagePropagation(error)
            else:
                num_cols = len(item[0])
        col_widths = self.get_column_widths(num_cols)
        return num_cols, col_widths