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- # -*- coding: utf-8 -*-
- #
- # Copyright (C) 2012 Ben Kurtovic <ben.kurtovic@verizon.net>
- #
- # Permission is hereby granted, free of charge, to any person obtaining a copy
- # of this software and associated documentation files (the "Software"), to deal
- # in the Software without restriction, including without limitation the rights
- # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
- # copies of the Software, and to permit persons to whom the Software is
- # furnished to do so, subject to the following conditions:
- #
- # The above copyright notice and this permission notice shall be included in
- # all copies or substantial portions of the Software.
- #
- # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
- # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
- # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
- # SOFTWARE.
-
- import re
-
- from . import tokens
- from .build_stack import BuildStack
- from ..nodes import Template, Text
- from ..nodes.extras import Parameter
- from ..smart_list import SmartList
- from ..wikicode import Wikicode
-
- __all__ = ["Builder"]
-
- class Builder(object):
- def __init__(self):
- self._tokens = []
- self._stack = BuildStack()
-
- def _pop(self):
- return Wikicode(SmartList(stack.pop()))
-
- def _handle_parameter(self, key):
- showkey = False
- self._stack.push()
- while self._tokens:
- token = self._tokens.pop(0)
- if isinstance(token, tokens.TEMPLATE_PARAM_EQUALS):
- key = self._pop()
- showkey = True
- self._stack.push()
- elif isinstance(token, (tokens.TEMPLATE_PARAM_SEPARATOR,
- tokens.TEMPLATE_CLOSE)):
- self._tokens.insert(0, token)
- value = self._pop()
- return Parameter(key, value, showkey)
- else:
- self._stack.write(self._handle_token())
-
- def _handle_template(self):
- params = []
- int_keys = set()
- int_key_range = {1}
- self._stack.push()
- while self._tokens:
- token = self._tokens.pop(0)
- if isinstance(token, tokens.TEMPLATE_PARAM_SEPARATOR):
- if not params:
- name = self._pop()
- param = self._handle_parameter(min(int_key_range - int_keys))
- if re.match(r"[1-9][0-9]*$", param.key.strip()):
- int_keys.add(int(param.key))
- int_key_range.add(len(int_keys) + 1)
- params.append(param)
- elif isinstance(token, tokens.TEMPLATE_CLOSE):
- if not params:
- name = self._pop()
- return Template(name, params)
- else:
- self._stack.write(self._handle_token())
-
- def _handle_token(self):
- token = self._tokens.pop(0)
- if isinstance(token, tokens.TEXT):
- return Text(token.text)
- elif isinstance(token, tokens.TEMPLATE_OPEN):
- return self._handle_template()
-
- def build(self, tokens):
- self._tokens = tokens
- self._stack.push()
- while self._tokens:
- self._stack.write(self._handle_token())
- return self._pop()
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