pyconfig/Interpreter/LangParser.py
# Copyright (c) 2016, Samantha Marshall (http://pewpewthespells.com)
# All rights reserved.
#
# https://github.com/samdmarshall/pyconfig
#
# Redistribution and use in source and binary forms, with or without modification,
# are permitted provided that the following conditions are met:
#
# 1. Redistributions of source code must retain the above copyright notice, this
# list of conditions and the following disclaimer.
#
# 2. Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation and/or
# other materials provided with the distribution.
#
# 3. Neither the name of Samantha Marshall nor the names of its contributors may
# be used to endorse or promote products derived from this software without
# specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
# BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
# OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
# OF THE POSSIBILITY OF SUCH DAMAGE.
import sys
import pyparsing
from .. import Keyword
if sys.version_info >= (3, 0):
def unichr(character): # pylint: disable=redefined-builtin
return chr(character)
def xrange(number): # pylint: disable=redefined-builtin
return range(number)
unicodePrintables = u''.join(unichr(c) for c in xrange(65536) if not unichr(c).isspace())
# pylint: disable=protected-access
_commaSeparatedItem = pyparsing.Combine( \
pyparsing.OneOrMore( \
pyparsing.Word(unicodePrintables, excludeChars=',') \
+ pyparsing.Optional( \
pyparsing.Word(" \t") \
+ ~pyparsing.Literal(",") \
+ ~pyparsing.LineEnd() \
) \
) \
).streamline()
_genericCSVList = pyparsing.delimitedList( \
pyparsing.Optional(pyparsing.quotedString.copy() | _commaSeparatedItem, default="") \
)
def KeywordWithDoubleQuotedParameter(keyword):
return pyparsing.Group( \
pyparsing.Keyword(keyword) \
+ pyparsing.dblQuotedString \
+ pyparsing.Suppress( \
pyparsing.ZeroOrMore( \
pyparsing.pythonStyleComment \
) \
) \
)
# export path of the current pyconfig file
_export = KeywordWithDoubleQuotedParameter(Keyword.Constants._export)
# include "other.xcconfig" # with optional trailing comment
_include = KeywordWithDoubleQuotedParameter(Keyword.Constants._required_include) \
^ KeywordWithDoubleQuotedParameter(Keyword.Constants._optional_include) \
^ KeywordWithDoubleQuotedParameter(Keyword.Constants._include)
# parsing conditional statement expressions
_conditionalExpr = pyparsing.Group( \
Keyword.Words._conditionalValue \
+ pyparsing.Suppress(Keyword.Constants._equals) \
+ Keyword.Words._conditionalComparator \
)
_conditionalName = pyparsing.Group(pyparsing.delimitedList(_conditionalExpr, Keyword.Constants._and))
# group( comma, separated, values, to be used as assignment, for build configurations )
_bc_value = pyparsing.Group( \
pyparsing.Optional( \
_genericCSVList.ignore(pyparsing.pythonStyleComment) \
) \
)
#
_if_value = pyparsing.Group( \
pyparsing.Optional( \
_genericCSVList.ignore(pyparsing.pythonStyleComment) \
) \
)
#
_if_cond = pyparsing.Keyword(Keyword.Constants._if) \
+ _conditionalName \
+ pyparsing.Optional( \
pyparsing.Suppress(Keyword.Constants._openBrace) \
+ _if_value \
+ pyparsing.Suppress(Keyword.Constants._closeBrace) \
)
#
_for_bc = pyparsing.Keyword(Keyword.Constants._for) \
+ Keyword.Words._buildConfigurationName \
+ pyparsing.Optional( \
pyparsing.Suppress(Keyword.Constants._openBrace) \
+ pyparsing.Optional(pyparsing.pythonStyleComment) \
+ _bc_value \
+ pyparsing.Suppress(Keyword.Constants._closeBrace) \
)
#
_values = pyparsing.delimitedList( \
pyparsing.Group(_for_bc), \
pyparsing.Empty() \
) ^ pyparsing.delimitedList( \
pyparsing.Group(_if_cond), \
pyparsing.Empty() \
)
_setting_value = pyparsing.Optional(pyparsing.pythonStyleComment) \
+ _values \
+ pyparsing.Optional(pyparsing.pythonStyleComment)
#
_setting = pyparsing.Suppress(pyparsing.ZeroOrMore(pyparsing.pythonStyleComment)) \
+ pyparsing.Group( \
pyparsing.Keyword(Keyword.Constants._setting) \
+ Keyword.Words._buildSettingName \
+ pyparsing.Group( \
pyparsing.Optional(pyparsing.Keyword(Keyword.Constants._use) \
+ Keyword.Words._buildSettingName) \
+ pyparsing.Optional(pyparsing.Keyword(Keyword.Constants._inherits)) \
) \
+ pyparsing.nestedExpr( \
Keyword.Constants._openBrace, \
Keyword.Constants._closeBrace, \
_setting_value \
) \
)
# composing the configuration file parser
_config = pyparsing.Suppress( \
pyparsing.ZeroOrMore( \
pyparsing.pythonStyleComment \
) \
) \
+ pyparsing.Optional(_export) \
+ pyparsing.Optional( \
pyparsing.Group( \
pyparsing.delimitedList(_include, pyparsing.Empty()) \
) \
) \
+ pyparsing.Optional( \
pyparsing.Group( \
pyparsing.delimitedList(_setting, pyparsing.Empty()) \
) \
)