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Edit File: plural.cpython-39.pyc
a �`BS � @ s� d Z ddlZddlmZ dZdZdd� ZG dd � d e�Zd d � Z d d � Z dd� Z dd� Z dd� Z dd� ZG dd� de�ZdZde�dej�fde�d�e��fd e�d �fd e�d �fd e�d!ej�fgZd"d#� ZdBd$d%�ZdCd&d'�Zd(d)� Zd*d+� Zd,d-� Zd.d/� Z G d0d1� d1e�Z d2d3� Z d4d5� Z d6d7� Z G d8d9� d9e�Z!G d:d;� d;e!�Z"G d<d=� d=e!�Z#G d>d?� d?e#�Z$G d@dA� dAe!�Z%dS )Dz� babel.numbers ~~~~~~~~~~~~~ CLDR Plural support. See UTS #35. :copyright: (c) 2013-2021 by the Babel Team. :license: BSD, see LICENSE for more details. � N)�decimal)ZzeroZoneZtwo�few�many�otherr c C s� t | �}t|�}t|t�r6||kr(|}nt�t|��}t|tj�r�|�� }|j}|dk rf|j |d� nd}d� dd� |D ��}|� d�}t |�}t |�} t|p�d�} t|p�d�} nd } } } } |||| | | fS )a# Extract operands from a decimal, a float or an int, according to `CLDR rules`_. The result is a 6-tuple (n, i, v, w, f, t), where those symbols are as follows: ====== =============================================================== Symbol Value ------ --------------------------------------------------------------- n absolute value of the source number (integer and decimals). i integer digits of n. v number of visible fraction digits in n, with trailing zeros. w number of visible fraction digits in n, without trailing zeros. f visible fractional digits in n, with trailing zeros. t visible fractional digits in n, without trailing zeros. ====== =============================================================== .. _`CLDR rules`: https://www.unicode.org/reports/tr35/tr35-33/tr35-numbers.html#Operands :param source: A real number :type source: int|float|decimal.Decimal :return: A n-i-v-w-f-t tuple :rtype: tuple[decimal.Decimal, int, int, int, int, int] r N� � c s s | ]}t |�V qd S �N��str)�.0�dr r �0/usr/lib/python3.9/site-packages/babel/plural.py� <genexpr>A � z#extract_operands.<locals>.<genexpr>�0) �abs�int� isinstance�floatr ZDecimalr Zas_tupleZexponent�digits�join�rstrip�len) �source�n�iZ dec_tupleZexpZfraction_digitsZtrailingZ no_trailing�v�w�f�tr r r �extract_operands s$ r c @ sd e Zd ZdZdZdd� Zdd� Zedd� �Ze d d � �Z e d d � d d�Z dd� Z dd� Z dd� ZdS )� PluralRuleaf Represents a set of language pluralization rules. The constructor accepts a list of (tag, expr) tuples or a dict of `CLDR rules`_. The resulting object is callable and accepts one parameter with a positive or negative number (both integer and float) for the number that indicates the plural form for a string and returns the tag for the format: >>> rule = PluralRule({'one': 'n is 1'}) >>> rule(1) 'one' >>> rule(2) 'other' Currently the CLDR defines these tags: zero, one, two, few, many and other where other is an implicit default. Rules should be mutually exclusive; for a given numeric value, only one rule should apply (i.e. the condition should only be true for one of the plural rule elements. .. _`CLDR rules`: https://www.unicode.org/reports/tr35/tr35-33/tr35-numbers.html#Language_Plural_Rules )�abstract�_funcc C s� t |t�r|�� }t� }g | _tt|��D ]Z\}}|tvrHtd| ��n||v r\td| ��|� |� t |�j }|r*| j� ||f� q*dS )a$ Initialize the rule instance. :param rules: a list of ``(tag, expr)``) tuples with the rules conforming to UTS #35 or a dict with the tags as keys and expressions as values. :raise RuleError: if the expression is malformed zunknown tag %rztag %r defined twiceN) r �dict�items�setr" �sorted�list� _plural_tags� ValueError�add�_Parser�ast�append)�self�rules�found�key�exprr- r r r �__init__c s zPluralRule.__init__c s, | j � dt| �jd�� fdd�tD ��f S )Nz<%s %r>z, c s$ g | ] }|� v rd |� | f �qS )z%s: %sr �r �tag�r0 r r � <listcomp>} s �z'PluralRule.__repr__.<locals>.<listcomp>)r0 �type�__name__r r) �r/ r r7 r �__repr__y s �zPluralRule.__repr__c C s t || �r|S | |�S )a Create a `PluralRule` instance for the given rules. If the rules are a `PluralRule` object, that object is returned. :param rules: the rules as list or dict, or a `PluralRule` object :raise RuleError: if the expression is malformed )r )�clsr0 r r r �parse� s zPluralRule.parsec s t � j� t� fdd�| jD ��S )z�The `PluralRule` as a dict of unicode plural rules. >>> rule = PluralRule({'one': 'n is 1'}) >>> rule.rules {'one': 'n is 1'} c s g | ]\}}|� |�f�qS r r )r r6 r- ��_compiler r r8 � r z$PluralRule.rules.<locals>.<listcomp>)�_UnicodeCompiler�compiler$ r" r; r r? r r0 � s zPluralRule.rulesc C s t dd� | jD ��S )Nc S s g | ] }|d �qS )r r )r r r r r r8 � r z'PluralRule.<lambda>.<locals>.<listcomp>)� frozensetr" ��xr r r �<lambda>� r zPluralRule.<lambda>z� A set of explicitly defined tags in this rule. The implicit default ``'other'`` rules is not part of this set unless there is an explicit rule for it.)�docc C s | j S r �r" r; r r r � __getstate__� s zPluralRule.__getstate__c C s || _ d S r rH )r/ r" r r r � __setstate__� s zPluralRule.__setstate__c C s t | d�st| �| _| �|�S )Nr# )�hasattr� to_pythonr# )r/ r r r r �__call__� s zPluralRule.__call__N)r: � __module__� __qualname__�__doc__� __slots__r4 r< � classmethodr> �propertyr0 �tagsrI rJ rM r r r r r! L s r! c C sR t � j}dg}t�| �jD ] \}}|�d||�|f � q|�dt � d�|�S )a� Convert a list/dict of rules or a `PluralRule` object into a JavaScript function. This function depends on no external library: >>> to_javascript({'one': 'n is 1'}) "(function(n) { return (n == 1) ? 'one' : 'other'; })" Implementation detail: The function generated will probably evaluate expressions involved into range operations multiple times. This has the advantage that external helper functions are not required and is not a big performance hit for these simple calculations. :param rule: the rules as list or dict, or a `PluralRule` object :raise RuleError: if the expression is malformed z(function(n) { return z %s ? %r : z%r; })r )�_JavaScriptCompilerrB r! r> r" r. � _fallback_tagr )�ruleZto_js�resultr6 r- r r r � to_javascript� s rY c C s� t tttd�}t� j}ddg}t�| �jD ]"\}}|� d||�t |�f � q*|� dt � td� |�dd�}t ||� |d S ) a< Convert a list/dict of rules or a `PluralRule` object into a regular Python function. This is useful in situations where you need a real function and don't are about the actual rule object: >>> func = to_python({'one': 'n is 1', 'few': 'n in 2..4'}) >>> func(1) 'one' >>> func(3) 'few' >>> func = to_python({'one': 'n in 1,11', 'few': 'n in 3..10,13..19'}) >>> func(11) 'one' >>> func(15) 'few' :param rule: the rules as list or dict, or a `PluralRule` object :raise RuleError: if the expression is malformed )�INZWITHINZMODr zdef evaluate(n):z' n, i, v, w, f, t = extract_operands(n)z if (%s): return %rz return %r� z<rule>�execZevaluate)� in_range_list�within_range_list� cldr_modulor �_PythonCompilerrB r! r> r" r. r rV r �eval)rW � namespaceZto_python_funcrX r6 r- �coder r r rL � s �� rL c s� t �| �} | jthB � t� j}� fdd�tD �j}dt� � g}| j D ]"\}}|� d||�||�f � qF|� d|t� � d� |�S )a~ The plural rule as gettext expression. The gettext expression is technically limited to integers and returns indices rather than tags. >>> to_gettext({'one': 'n is 1', 'two': 'n is 2'}) 'nplurals=3; plural=((n == 1) ? 0 : (n == 2) ? 1 : 2)' :param rule: the rules as list or dict, or a `PluralRule` object :raise RuleError: if the expression is malformed c s g | ]}|� v r|�qS r r r5 �Z used_tagsr r r8 � r z to_gettext.<locals>.<listcomp>znplurals=%d; plural=(z %s ? %d : z%d)r ) r! r> rT rV �_GettextCompilerrB r) �indexr r" r. r )rW r@ Z _get_indexrX r6 r- r rd r � to_gettext� s rg c C s | t | �kot| |�S )a� Integer range list test. This is the callback for the "in" operator of the UTS #35 pluralization rule language: >>> in_range_list(1, [(1, 3)]) True >>> in_range_list(3, [(1, 3)]) True >>> in_range_list(3, [(1, 3), (5, 8)]) True >>> in_range_list(1.2, [(1, 4)]) False >>> in_range_list(10, [(1, 4)]) False >>> in_range_list(10, [(1, 4), (6, 8)]) False )r r^ ��num� range_listr r r r] � s r] c s t � fdd�|D ��S )a� Float range test. This is the callback for the "within" operator of the UTS #35 pluralization rule language: >>> within_range_list(1, [(1, 3)]) True >>> within_range_list(1.0, [(1, 3)]) True >>> within_range_list(1.2, [(1, 4)]) True >>> within_range_list(8.8, [(1, 4), (7, 15)]) True >>> within_range_list(10, [(1, 4)]) False >>> within_range_list(10.5, [(1, 4), (20, 30)]) False c 3 s" | ]\}}� |ko� |kV qd S r r )r Zmin_Zmax_�ri r r r $ r z$within_range_list.<locals>.<genexpr>)�anyrh r rk r r^ s r^ c C s@ d}| dk r| d9 } d}|dk r(|d9 }| | }|r<|d9 }|S )z�Javaish modulo. This modulo operator returns the value with the sign of the dividend rather than the divisor like Python does: >>> cldr_modulo(-3, 5) -3 >>> cldr_modulo(-3, -5) -3 >>> cldr_modulo(3, 5) 3 r ���� r )�a�b�reverse�rvr r r r_ ' s r_ c @ s e Zd ZdZdS )� RuleErrorz Raised if a rule is malformed.N)r: rN rO rP r r r r rs > s rs Znivwftz\s+�wordz)\b(and|or|is|(?:with)?in|not|mod|[{0}])\b�valuez\d+�symbolz%|,|!=|=�ellipsisz\.{2,3}|\u2026c C s� | � d�d } g }d}t| �}||k r|tD ]>\}}|�| |�}|d ur*|�� }|rd|�||�� f� q q*td| | ��q |d d d� S )N�@r z5malformed CLDR pluralization rule. Got unexpected %rrm )�splitr �_RULES�match�endr. �grouprs )�srX �posr| �tokrW r{ r r r � tokenize_ruleM s �r� c C s, | o*| d d |ko*|d u p*| d d |kS )Nrm r rn r ��tokens�type_ru r r r �test_next_token` s �r� c C s t | ||�r| �� S d S r )r� �popr� r r r � skip_tokene s r� c C s d| ffS )Nru r )ru r r r � value_nodej s r� c C s | dfS )Nr r )�namer r r � ident_noden s r� c C s d| fS )Nrj r )rj r r r �range_list_noder s r� c C s d| ffS )N�notr )rr r r r �negatev s r� c @ sb e Zd ZdZdd� Zddd�Zdd� Zd d � Zd d � Zd d� Z dd� Z dd� Z dd� Z dd� Z dS )r, u� Internal parser. This class can translate a single rule into an abstract tree of tuples. It implements the following grammar:: condition = and_condition ('or' and_condition)* ('@integer' samples)? ('@decimal' samples)? and_condition = relation ('and' relation)* relation = is_relation | in_relation | within_relation is_relation = expr 'is' ('not')? value in_relation = expr (('not')? 'in' | '=' | '!=') range_list within_relation = expr ('not')? 'within' range_list expr = operand (('mod' | '%') value)? operand = 'n' | 'i' | 'f' | 't' | 'v' | 'w' range_list = (range | value) (',' range_list)* value = digit+ digit = 0|1|2|3|4|5|6|7|8|9 range = value'..'value samples = sampleRange (',' sampleRange)* (',' ('…'|'...'))? sampleRange = decimalValue '~' decimalValue decimalValue = value ('.' value)? - Whitespace can occur between or around any of the above tokens. - Rules should be mutually exclusive; for a given numeric value, only one rule should apply (i.e. the condition should only be true for one of the plural rule elements). - The in and within relations can take comma-separated lists, such as: 'n in 3,5,7..15'. - Samples are ignored. The translator parses the expression on instanciation into an attribute called `ast`. c C sD t |�| _| jsd | _d S | �� | _| jr@td| jd d ��d S )Nz Expected end of rule, got %rrm rn )r� r� r- � conditionrs )r/ �stringr r r r4 � s �z_Parser.__init__Nc C sf t | j||�}|d ur|S |d u r6t|d u r0|p2|�}| jsHtd| ��td|| jd d f ��d S )Nz#expected %s but end of rule reachedzexpected %s but got %rrm rn )r� r� �reprrs )r/ r� ru Zterm�tokenr r r �expect� s z_Parser.expectc C s, | � � }t| jdd�r(d|| � � ff}q|S )Nrt �or)� and_conditionr� r� �r/ �opr r r r� � s z_Parser.conditionc C s, | � � }t| jdd�r(d|| � � ff}q|S )Nrt �and)�relationr� r� r� r r r r� � s z_Parser.and_conditionc C s� | � � }t| jdd�r8t| jdd�r(dp*d|| �� ffS t| jdd�}d}t| jdd�r^d}n$t| jdd�s�|rxtd��| �|�S d||| �� ff}|r�t|�S |S ) Nrt �isr� Zisnot�inZwithinz#Cannot negate operator based rules.r� )r3 r� r� ru rs �newfangled_relationrj r� )r/ �left�negated�methodrr r r r r� � s � z_Parser.relationc C sR t | jdd�rd}n t | jdd�r(d}ntd��dd|| �� ff}|rNt|�S |S ) Nrv �=Fz!=Tz'Expected "=" or "!=" or legacy relationr� r� )r� r� rs rj r� )r/ r� r� rr r r r r� � s z_Parser.newfangled_relationc C s, | � � }t| jd�r || � � fS ||fS d S )Nrw )ru r� r� )r/ r� r r r �range_or_value� s z_Parser.range_or_valuec C s0 | � � g}t| jdd�r(|�| � � � q t|�S )Nrv �,)r� r� r� r. r� )r/ rj r r r rj � s z_Parser.range_listc C s| t | jd�}|d u s |d tvr(td��|d }t | jdd�rRd|df| �� ffS t | jdd�rtd|df| �� ffS t|�S )Nrt rn z Expected identifier variable�modr rv �%)r� r� �_VARSrs ru r� )r/ rt r� r r r r3 � s z _Parser.exprc C s t t| �d�d ��S )Nru rn )r� r r� r; r r r ru � s z _Parser.value)NN)r: rN rO rP r4 r� r� r� r� r� r� rj r3 ru r r r r r, z s ! r, c s � fdd�S )�%Compiler factory for the `_Compiler`.c s � | � |�| � |�f S r �rB )r/ �l�r�Ztmplr r rF � r z"_binary_compiler.<locals>.<lambda>r r� r r� r �_binary_compiler� s r� c s � fdd�S )r� c s � | � |� S r r� )r/ rE r� r r rF � r z!_unary_compiler.<locals>.<lambda>r r� r r� r �_unary_compiler� s r� c C s dS )Nr r rD r r r rF � r rF c @ s� e Zd ZdZdd� Zdd� Zdd� Zdd� Zdd� Zd d� Z d d� Z d d� Z e d �Z e d �Zed�Ze d�Ze d�Ze d�Zdd� ZdS )� _CompilerzZThe compilers are able to transform the expressions into multiple output formats. c C s |\}}t | d| �|� S )NZcompile_)�getattr)r/ �argr� �argsr r r rB s z_Compiler.compilec C s dS )Nr r rD r r r rF r z_Compiler.<lambda>c C s dS )Nr r rD r r r rF r c C s dS )Nr r rD r r r rF r c C s dS )Nr r rD r r r rF r c C s dS )Nr r rD r r r rF r c C s dS )Nr r rD r r r rF r c C s t |�S r r )rE r r r r rF r z (%s && %s)z (%s || %s)z(!%s)z (%s %% %s)� (%s == %s)z (%s != %s)c C s t � �d S r )�NotImplementedError)r/ r� r3 rj r r r �compile_relation s z_Compiler.compile_relationN)r: rN rO rP rB � compile_n� compile_i� compile_v� compile_w� compile_f� compile_tZ compile_valuer� � compile_and� compile_orr� � compile_not� compile_mod� compile_is� compile_isnotr� r r r r r� s r� c @ s8 e Zd ZdZed�Zed�Zed�Zed�Z dd� Z dS ) r` z!Compiles an expression to Python.z (%s and %s)z (%s or %s)z(not %s)z MOD(%s, %s)c s8 dd� � fdd�|d D �� }d|�� � �|�|f S )Nz[%s]r� c s g | ]}d t t� j|�� �qS )z(%s, %s))�tuple�maprB )r Zrange_r; r r r8 ' s �z4_PythonCompiler.compile_relation.<locals>.<listcomp>rn z %s(%s, %s))r �upperrB )r/ r� r3 rj Zcompile_range_listr r; r r� % s ���z _PythonCompiler.compile_relationN) r: rN rO rP r� r� r� r� r� r� r� r r r r r` s r` c @ s. e Zd ZdZejZeZeZ eZ eZ dd� Z dS )re z)Compile into a gettext plural expression.c C s~ g }| � |�}|d D ]X}|d |d krH|�d|| � |d �f � qt| j |�\}}|�d||||f � qdd�|� S )Nrn r r� z(%s >= %s && %s <= %s)z(%s)z || )rB r. r� r )r/ r� r3 rj rr �item�min�maxr r r r� 6 s � � z!_GettextCompiler.compile_relationN) r: rN rO rP r� r� r� � compile_zeror� r� r� r� r� r r r r re - s re c @ s0 e Zd ZdZdd� ZeZeZeZeZ dd� Z dS )rU z/Compiles the expression to plain of JavaScript.c C s dS )NzparseInt(n, 10)r rD r r r rF O r z _JavaScriptCompiler.<lambda>c C s4 t �| |||�}|dkr0| �|�}d|||f }|S )Nr� z (parseInt(%s, 10) == %s && %s))re r� rB )r/ r� r3 rj rc r r r r� U s � z$_JavaScriptCompiler.compile_relationN) r: rN rO rP r� r� r� r� r� r� r� r r r r rU J s rU c @ sJ e Zd ZdZed�Zed�Zed�Zed�Zed�Z dd� Z d d d �Z d S )rA z+Returns a unicode pluralization rule again.z%s is %sz %s is not %sz %s and %sz%s or %sz %s mod %sc C s | j |d ddi�S )Nrn r� T)r� )r/ r� r r r r� k s z _UnicodeCompiler.compile_notFc C sv g }|d D ]D}|d |d kr6|� | �|d �� q |� dtt| j|�� � q d| �|�|rddpfd|d�|�f S )Nrn r z%s..%sz %s%s %s %sz notr r� )r. rB r� r� r )r/ r� r3 rj r� Zrangesr� r r r r� n s �z!_UnicodeCompiler.compile_relationN)F) r: rN rO rP r� r� r� r� r� r� r� r� r r r r rA ^ s rA )N)N)&rP �reZ babel._compatr r) rV r �objectr! rY rL rg r] r^ r_ � Exceptionrs r� rB �UNICODE�formatrz r� r� r� r� r� r� r� r, r� r� r� r� r` re rU rA r r r r �<module> sL 8]( � � {