babel/old/babel-test: babel/plural.py annotate

annotate babel/plural.py @ 392:2e77d72516d7

Fixed not in plural rules

author	aronacher
date	Tue, 15 Jul 2008 10:13:55 +0000
parents	3eb859adc5de
children	d85b5a78ee9c

rev	line source
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	1 # -- coding: utf-8 --
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	2 #
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	3 # Copyright (C) 2008 Edgewall Software
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	4 # All rights reserved.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	5 #
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	6 # This software is licensed as described in the file COPYING, which
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	7 # you should have received as part of this distribution. The terms
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	8 # are also available at http://babel.edgewall.org/wiki/License.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	9 #
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	10 # This software consists of voluntary contributions made by many
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	11 # individuals. For the exact contribution history, see the revision
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	12 # history and logs, available at http://babel.edgewall.org/log/.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	13
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	14 """CLDR Plural support. See UTS #35. EXPERIMENTAL"""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	15
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	16 import re
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	17 try:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	18 set
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	19 except NameError:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	20 from sets import ImmutableSet as frozenset, Set as set
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	21
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	22
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	23 _plural_tags = ('zero', 'one', 'two', 'few', 'many', 'other')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	24 _fallback_tag = 'other'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	25
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	26
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	27 class PluralRule(object):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	28 """Represents a CLDR language pluralization rules. The constructors
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	29 accepts a list of (tag, expr) tuples or a dict of CLDR rules.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	30 The resulting object is callable and accepts one parameter with a
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	31 positive or negative number (both integer and float) for the number
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	32 that indicates the plural form for a string and returns the tag for
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	33 the format:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	34
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	35 >>> rule = PluralRule({'one': 'n is 1'})
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	36 >>> rule(1)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	37 'one'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	38 >>> rule(2)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	39 'other'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	40
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	41 Currently the CLDR defines these tags: zero, one, two, few, many and
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	42 other where other is an implicit default. Rules should be mutually
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	43 exclusive; for a given numeric value, only one rule should apply (i.e.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	44 the condition should only be true for one of the plural rule elements.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	45
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	46 :param rules: a list of ``(tag, expr)``) tuples with the rules conforming
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	47 to UTS #35 or a dict with the tags as keys and expressions
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	48 as values.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	49 :raise: a `RuleError` if the expression is malformed
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	50 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	51
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	52 __slots__ = ('abstract', '_func')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	53
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	54 def __init__(self, rules):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	55 if isinstance(rules, dict):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	56 rules = rules.items()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	57 found = set()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	58 self.abstract = []
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	59 for key, expr in rules:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	60 if key not in _plural_tags:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	61 raise ValueError('unknown tag %r' % key)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	62 elif key in found:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	63 raise ValueError('tag %r defined twice' % key)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	64 found.add(key)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	65 self.abstract.append((key, _Parser(expr).ast))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	66
390 ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	67 def __repr__(self):
ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	68 return '<%s %r>' % (type(self).__name__, self.abstract)
ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	69
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	70 def parse(cls, rules):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	71 """Create a `PluralRule` instance for the given rules. If the rules
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	72 are a `PluralRule` object, that object is returned.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	73
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	74 :param rules: the rules as list or dict, or a `PluralRule` object
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	75 :return: a corresponding `PluralRule` object
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	76 :raise: a `RuleError` if the expression is malformed
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	77 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	78 if isinstance(rules, cls):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	79 return rules
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	80 return cls(rules)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	81 parse = classmethod(parse)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	82
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	83 def rules(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	84 """The `PluralRule` as a dict of unicode plural rules."""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	85 _compile = _UnicodeCompiler().compile
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	86 return dict([(tag, _compile(ast)) for tag, ast in self.abstract])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	87 rules = property(rules, doc=rules.__doc__)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	88
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	89 def gettext_expr(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	90 """The plural rule as gettext expression. The gettext expression is
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	91 technically limited to integers and returns indices rather than tags.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	92
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	93 >>> PluralRule({'one': 'n is 1', 'two': 'n is 2'}).gettext_expr
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	94 'nplurals=3; plural=((n == 2) ? 1 : (n == 1) ? 0 : 2)'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	95 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	96 used_tags = self.tags \| set([_fallback_tag])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	97 _compile = _GettextCompiler().compile
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	98 _get_index = [tag for tag in _plural_tags if tag in used_tags].index
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	99
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	100 result = ['nplurals=%d; plural=(' % len(used_tags)]
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	101 for tag, ast in self.abstract:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	102 result.append('%s ? %d : ' % (_compile(ast), _get_index(tag)))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	103 result.append('%d)' % _get_index(_fallback_tag))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	104 return ''.join(result)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	105 gettext_expr = property(gettext_expr, doc=gettext_expr.__doc__)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	106
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	107 tags = property(lambda x: frozenset([i[0] for i in x.abstract]), doc="""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	108 A set of explicitly defined tags in this rule. The implicit default
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	109 ``'other'`` rules is not part of this set unless there is an explicit
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	110 rule for it.""")
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	111
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	112 def __getstate__(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	113 return self.abstract
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	114
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	115 def __setstate__(self, abstract):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	116 self.abstract = abstract
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	117
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	118 def __call__(self, n):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	119 if not hasattr(self, '_func'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	120 self._func = to_python(self)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	121 return self._func(n)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	122
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	123
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	124 def to_javascript(rule):
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	125 """Convert a list/dict of rules or a `PluralRule` object into a JavaScript
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	126 function. This function depends on no external library:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	127
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	128 >>> to_javascript({'one': 'n is 1'})
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	129 "(function(n) { return (n == 1) ? 'one' : 'other'; })"
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	130
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	131 Implementation detail: The function generated will probably evaluate
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	132 expressions involved into range operations multiple times. This has the
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	133 advantage that external helper functions are not required and is not a
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	134 big performance hit for these simple calculations.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	135
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	136 :param rules: the rules as list or dict, or a `PluralRule` object
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	137 :return: a corresponding JavaScript function as `str`
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	138 :raise: a `RuleError` if the expression is malformed
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	139 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	140 to_js = _JavaScriptCompiler().compile
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	141 result = ['(function(n) { return ']
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	142 for tag, ast in PluralRule.parse(rule).abstract:
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	143 result.append('%s ? %r : ' % (to_js(ast), tag))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	144 result.append('%r; })' % _fallback_tag)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	145 return ''.join(result)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	146
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	147
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	148 def to_python(rule):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	149 """Convert a list/dict of rules or a `PluralRule` object into a regular
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	150 Python function. This is useful in situations where you need a real
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	151 function and don't are about the actual rule object:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	152
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	153 >>> func = to_python({'one': 'n is 1', 'few': 'n in 2..4'})
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	154 >>> func(1)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	155 'one'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	156 >>> func(3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	157 'few'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	158
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	159 :param rules: the rules as list or dict, or a `PluralRule` object
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	160 :return: a corresponding Python function
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	161 :raise: a `RuleError` if the expression is malformed
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	162 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	163 namespace = {
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	164 'IN': in_range,
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	165 'WITHIN': within_range,
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	166 'MOD': cldr_modulo
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	167 }
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	168 to_python = _PythonCompiler().compile
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	169 result = ['def evaluate(n):']
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	170 for tag, ast in rule.abstract:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	171 result.append(' if (%s): return %r' % (to_python(ast), tag))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	172 result.append(' return %r' % _fallback_tag)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	173 exec '\n'.join(result) in namespace
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	174 return namespace['evaluate']
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	175
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	176
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	177 def to_gettext(rule):
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	178 """The plural rule as gettext expression. The gettext expression is
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	179 technically limited to integers and returns indices rather than tags.
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	180
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	181 >>> to_gettext({'one': 'n is 1', 'two': 'n is 2'})
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	182 'nplurals=3; plural=((n == 2) ? 1 : (n == 1) ? 0 : 2)'
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	183 """
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	184 return PluralRule.parse(rule).gettext_expr
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	185
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	186
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	187 def in_range(num, min, max):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	188 """Integer range test. This is the callback for the "in" operator
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	189 of the UTS #35 pluralization rule language:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	190
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	191 >>> in_range(1, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	192 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	193 >>> in_range(3, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	194 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	195 >>> in_range(1.2, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	196 False
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	197 >>> in_range(10, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	198 False
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	199 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	200 return num == int(num) and within_range(num, min, max)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	201
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	202
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	203 def within_range(num, min, max):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	204 """Float range test. This is the callback for the "within" operator
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	205 of the UTS #35 pluralization rule language:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	206
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	207 >>> within_range(1, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	208 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	209 >>> within_range(1.0, 1, 3)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	210 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	211 >>> within_range(1.2, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	212 True
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	213 >>> within_range(10, 1, 4)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	214 False
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	215 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	216 return num >= min and num <= max
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	217
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	218
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	219 def cldr_modulo(a, b):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	220 """Javaish modulo. This modulo operator returns the value with the sign
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	221 of the dividend rather than the divisor like Python does:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	222
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	223 >>> cldr_modulo(-3, 5)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	224 -3
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	225 >>> cldr_modulo(-3, -5)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	226 -3
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	227 >>> cldr_modulo(3, 5)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	228 3
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	229 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	230 reverse = 0
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	231 if a < 0:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	232 a *= -1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	233 reverse = 1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	234 if b < 0:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	235 b *= -1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	236 rv = a % b
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	237 if reverse:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	238 rv *= -1
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	239 return rv
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	240
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	241
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	242 class RuleError(Exception):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	243 """Raised if a rule is malformed."""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	244
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	245
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	246 class _Parser(object):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	247 """Internal parser. This class can translate a single rule into an abstract
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	248 tree of tuples. It implements the following grammar::
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	249
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	250 condition = and_condition ('or' and_condition)*
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	251 and_condition = relation ('and' relation)*
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	252 relation = is_relation \| in_relation \| within_relation \| 'n' <EOL>
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	253 is_relation = expr 'is' ('not')? value
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	254 in_relation = expr ('not')? 'in' range
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	255 within_relation = expr ('not')? 'within' range
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	256 expr = 'n' ('mod' value)?
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	257 value = digit+
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	258 digit = 0\|1\|2\|3\|4\|5\|6\|7\|8\|9
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	259 range = value'..'value
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	260
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	261 - Whitespace can occur between or around any of the above tokens.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	262 - Rules should be mutually exclusive; for a given numeric value, only one
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	263 rule should apply (i.e. the condition should only be true for one of
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	264 the plural rule elements.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	265
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	266 The translator parses the expression on instanciation into an attribute
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	267 called `ast`.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	268 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	269
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	270 _rules = [
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	271 (None, re.compile(r'\s+(?u)')),
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	272 ('word', re.compile(r'\b(and\|or\|is\|(?:with)?in\|not\|mod\|n)\b')),
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	273 ('value', re.compile(r'\d+')),
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	274 ('ellipsis', re.compile(r'\.\.'))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	275 ]
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	276
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	277 def __init__(self, string):
390 ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	278 string = string.lower()
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	279 result = []
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	280 pos = 0
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	281 end = len(string)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	282 while pos < end:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	283 for tok, rule in self._rules:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	284 match = rule.match(string, pos)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	285 if match is not None:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	286 pos = match.end()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	287 if tok:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	288 result.append((tok, match.group()))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	289 break
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	290 else:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	291 raise RuleError('malformed CLDR pluralization rule. '
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	292 'Got unexpected %r' % string[pos])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	293 self.tokens = result[::-1]
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	294
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	295 self.ast = self.condition()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	296 if self.tokens:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	297 raise RuleError('Expected end of rule, got %r' %
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	298 self.tokens[-1][1])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	299
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	300 def test(self, type, value=None):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	301 return self.tokens and self.tokens[-1][0] == type and \
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	302 (value is None or self.tokens[-1][1] == value)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	303
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	304 def skip(self, type, value=None):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	305 if self.test(type, value):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	306 return self.tokens.pop()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	307
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	308 def expect(self, type, value=None, term=None):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	309 token = self.skip(type, value)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	310 if token is not None:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	311 return token
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	312 if term is None:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	313 term = repr(value is None and type or value)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	314 if not self.tokens:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	315 raise RuleError('expected %s but end of rule reached' % term)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	316 raise RuleError('expected %s but got %r' % (term, self.tokens[-1][1]))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	317
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	318 def condition(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	319 op = self.and_condition()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	320 while self.skip('word', 'or'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	321 op = 'or', (op, self.and_condition())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	322 return op
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	323
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	324 def and_condition(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	325 op = self.relation()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	326 while self.skip('word', 'and'):
390 ecf110e7f604 Preliminary support for timedelta formatting (see #126), and import/expose the locale plural rules from the CLDR. cmlenz parents: 387 diff changeset	327 op = 'and', (op, self.relation())
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	328 return op
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	329
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	330 def relation(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	331 left = self.expr()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	332 if self.skip('word', 'is'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	333 return self.skip('word', 'not') and 'isnot' or 'is', \
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	334 (left, self.value())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	335 negated = self.skip('word', 'not')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	336 method = 'in'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	337 if self.skip('word', 'within'):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	338 method = 'within'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	339 else:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	340 self.expect('word', 'in', term="'within' or 'in'")
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	341 rv = 'relation', (method, left, self.range())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	342 if negated:
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	343 rv = 'not', (rv,)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	344 return rv
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	345
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	346 def range(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	347 left = self.value()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	348 self.expect('ellipsis')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	349 return 'range', (left, self.value())
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	350
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	351 def expr(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	352 self.expect('word', 'n')
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	353 if self.skip('word', 'mod'):
391 3eb859adc5de Fixed a bug in plural.py that caused a traceback for some locales, changed the `__mod__` DateTimePattern to not raise exceptions but return NotImplemented. aronacher parents: 390 diff changeset	354 return 'mod', (('n', ()), self.value())
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	355 return 'n', ()
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	356
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	357 def value(self):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	358 return 'value', (int(self.expect('value')[1]),)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	359
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	360
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	361 def _binary_compiler(tmpl):
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	362 """Compiler factory for the `_Compiler`."""
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	363 return lambda self, l, r: tmpl % (self.compile(l), self.compile(r))
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	364
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	365
392 2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	366 def _unary_compiler(tmpl):
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	367 """Compiler factory for the `_Compiler`."""
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	368 return lambda self, x: tmpl % self.compile(x)
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	369
2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	370
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	371 class _Compiler(object):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	372 """The compilers are able to transform the expressions into multiple
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	373 output formats.
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	374 """
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	375
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	376 def compile(self, (op, args)):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	377 return getattr(self, 'compile_' + op)(*args)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	378
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	379 compile_n = lambda x: 'n'
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	380 compile_value = lambda x, v: str(v)
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	381 compile_and = _binary_compiler('(%s && %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	382 compile_or = _binary_compiler('(%s \|\| %s)')
392 2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	383 compile_not = _unary_compiler('(!%s)')
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	384 compile_mod = _binary_compiler('(%s %% %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	385 compile_is = _binary_compiler('(%s == %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	386 compile_isnot = _binary_compiler('(%s != %s)')
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	387
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	388 def compile_relation(self, method, expr, range):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	389 range = '%s, %s' % tuple(map(self.compile, range[1]))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	390 return '%s(%s, %s)' % (method.upper(), self.compile(expr), range)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	391
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	392
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	393 class _PythonCompiler(_Compiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	394 """Compiles an expression to Python."""
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	395
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	396 compile_and = _binary_compiler('(%s and %s)')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	397 compile_or = _binary_compiler('(%s or %s)')
392 2e77d72516d7 Fixed not in plural rules aronacher parents: 391 diff changeset	398 compile_not = _unary_compiler('(not %s)')
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	399 compile_mod = _binary_compiler('MOD(%s, %s)')
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	400
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	401
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	402 class _GettextCompiler(_Compiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	403 """Compile into a gettext plural expression."""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	404
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	405 def compile_relation(self, method, expr, range):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	406 expr = self.compile(expr)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	407 min, max = map(self.compile, range[1])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	408 return '(%s >= %s && %s <= %s)' % (expr, min, expr, max)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	409
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	410
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	411 class _JavaScriptCompiler(_GettextCompiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	412 """Compiles the expression to plain of JavaScript."""
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	413
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	414 def compile_relation(self, method, expr, range):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	415 code = _GettextCompiler.compile_relation(self, method, expr, range)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	416 if method == 'in':
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	417 expr = self.compile(expr)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	418 code = '(parseInt(%s) == %s && %s)' % (expr, expr, code)
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	419 return code
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	420
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	421
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	422 class _UnicodeCompiler(_Compiler):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	423 """Returns a unicode pluralization rule again."""
387 2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	424
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	425 compile_is = _binary_compiler('%s is %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	426 compile_isnot = _binary_compiler('%s is not %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	427 compile_and = _binary_compiler('%s and %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	428 compile_or = _binary_compiler('%s or %s')
2edbea56d2bd Some refactoring in plural.py aronacher parents: 386 diff changeset	429 compile_mod = _binary_compiler('%s mod %s')
386 4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	430
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	431 def compile_not(self, relation):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	432 return self.compile_relation(negated=True, *relation[1])
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	433
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	434 def compile_relation(self, method, expr, range, negated=False):
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	435 return '%s%s %s %s' % (
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	436 self.compile(expr), negated and ' not' or '',
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	437 method, '%s..%s' % tuple(map(self.compile, range[1]))
4d345ad621c2 Added pluralization support module for the plural definitions from the latest CLDR aronacher parents: diff changeset	438 )

Mercurial > babel > old > babel-test

annotate babel/plural.py @ 392:2e77d72516d7