template.py 文件源码

def read_block_section(self, text, begin_indent=''):
        r"""
            >>> read_block_section = Parser().read_block_section
            >>> read_block_section('for i in range(10): hello $i\nfoo')
            (<block: 'for i in range(10):', [<line: [t'hello ', $i, t'\n']>]>, 'foo')
            >>> read_block_section('for i in range(10):\n        hello $i\n    foo', begin_indent='    ')
            (<block: 'for i in range(10):', [<line: [t'hello ', $i, t'\n']>]>, '    foo')
            >>> read_block_section('for i in range(10):\n  hello $i\nfoo')
            (<block: 'for i in range(10):', [<line: [t'hello ', $i, t'\n']>]>, 'foo')
        """
        line, text = splitline(text)
        stmt, line = self.read_statement(line)
        keyword = self.python_lookahead(stmt)

        # if there is some thing left in the line
        if line.strip():
            block = line.lstrip()
        else:
            def find_indent(text):
                rx = re_compile('  +')
                match = rx.match(text)    
                first_indent = match and match.group(0)
                return first_indent or ""

            # find the indentation of the block by looking at the first line
            first_indent = find_indent(text)[len(begin_indent):]

            #TODO: fix this special case
            if keyword == "code":
                indent = begin_indent + first_indent
            else:
                indent = begin_indent + min(first_indent, INDENT)

            block, text = self.read_indented_block(text, indent)

        return self.create_block_node(keyword, stmt, block, begin_indent), text