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89 lines
2.5 KiB
Python
89 lines
2.5 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (C) 2016 Adrien Vergé
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import yaml
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class Line(object):
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def __init__(self, line_no, buffer, start, end):
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self.line_no = line_no
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self.start = start
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self.end = end
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self.buffer = buffer
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@property
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def content(self):
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return self.buffer[self.start:self.end]
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class Token(object):
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def __init__(self, line_no, curr, prev, next, nextnext):
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self.line_no = line_no
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self.curr = curr
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self.prev = prev
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self.next = next
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self.nextnext = nextnext
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def line_generator(buffer):
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line_no = 1
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cur = 0
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next = buffer.find('\n')
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while next != -1:
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yield Line(line_no, buffer, start=cur, end=next)
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cur = next + 1
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next = buffer.find('\n', cur)
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line_no += 1
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yield Line(line_no, buffer, start=cur, end=len(buffer))
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def token_generator(buffer):
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yaml_loader = yaml.BaseLoader(buffer)
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try:
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prev = None
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curr = yaml_loader.get_token()
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while curr is not None:
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next = yaml_loader.get_token()
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nextnext = yaml_loader.peek_token()
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yield Token(curr.start_mark.line + 1, curr, prev, next, nextnext)
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prev = curr
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curr = next
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except yaml.scanner.ScannerError:
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pass
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def token_or_line_generator(buffer):
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"""Generator that mixes tokens and lines, ordering them by line number"""
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token_gen = token_generator(buffer)
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line_gen = line_generator(buffer)
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token = next(token_gen, None)
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line = next(line_gen, None)
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while token is not None or line is not None:
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if token is None or (line is not None and
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token.line_no > line.line_no):
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yield line
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line = next(line_gen, None)
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else:
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yield token
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token = next(token_gen, None)
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