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/snap/core22/2411/usr/lib/python3/dist-packages/babel/messages/

/snap/core22/2411/usr/lib/python3/dist-packages/babel/messages

Name	Size	Mode	Actions
__pycache__/	-	0755	rm
catalog.py	32296	0644	edit dl rm
checkers.py	6085	0644	edit dl rm
extract.py	26474	0644	edit dl rm
frontend.py	38729	0644	edit dl rm
jslexer.py	6334	0644	edit dl rm
mofile.py	7204	0644	edit dl rm
plurals.py	7206	0644	edit dl rm
pofile.py	21864	0644	edit dl rm
__init__.py	254	0644	edit dl rm

Edit: /snap/core22/2411/usr/lib/python3/dist-packages/babel/messages/jslexer.py (6334B)

# -*- coding: utf-8 -*-
"""
    babel.messages.jslexer
    ~~~~~~~~~~~~~~~~~~~~~~

A simple JavaScript 1.5 lexer which is used for the JavaScript
    extractor.

:copyright: (c) 2013-2019 by the Babel Team.
    :license: BSD, see LICENSE for more details.
"""
from collections import namedtuple
import re
from babel._compat import unichr

operators = sorted([
    '+', '-', '*', '%', '!=', '==', '<', '>', '<=', '>=', '=',
    '+=', '-=', '*=', '%=', '<<', '>>', '>>>', '<<=', '>>=',
    '>>>=', '&', '&=', '|', '|=', '&&', '||', '^', '^=', '(', ')',
    '[', ']', '{', '}', '!', '--', '++', '~', ',', ';', '.', ':'
], key=len, reverse=True)

escapes = {'b': '\b', 'f': '\f', 'n': '\n', 'r': '\r', 't': '\t'}

name_re = re.compile(r'[\w$_][\w\d$_]*', re.UNICODE)
dotted_name_re = re.compile(r'[\w$_][\w\d$_.]*[\w\d$_.]', re.UNICODE)
division_re = re.compile(r'/=?')
regex_re = re.compile(r'/(?:[^/\\]*(?:\\.[^/\\]*)*)/[a-zA-Z]*', re.DOTALL)
line_re = re.compile(r'(\r\n|\n|\r)')
line_join_re = re.compile(r'\\' + line_re.pattern)
uni_escape_re = re.compile(r'[a-fA-F0-9]{1,4}')

Token = namedtuple('Token', 'type value lineno')

_rules = [
    (None, re.compile(r'\s+', re.UNICODE)),
    (None, re.compile(r'<!--.*')),
    ('linecomment', re.compile(r'//.*')),
    ('multilinecomment', re.compile(r'/\*.*?\*/', re.UNICODE | re.DOTALL)),
    ('dotted_name', dotted_name_re),
    ('name', name_re),
    ('number', re.compile(r'''(
        (?:0|[1-9]\d*)
        (\.\d+)?
        ([eE][-+]?\d+)? |
        (0x[a-fA-F0-9]+)
    )''', re.VERBOSE)),
    ('jsx_tag', re.compile(r'(?:</?[^>\s]+|/>)', re.I)),  # May be mangled in `get_rules`
    ('operator', re.compile(r'(%s)' % '|'.join(map(re.escape, operators)))),
    ('template_string', re.compile(r'''`(?:[^`\\]*(?:\\.[^`\\]*)*)`''', re.UNICODE)),
    ('string', re.compile(r'''(
        '(?:[^'\\]*(?:\\.[^'\\]*)*)'  |
        "(?:[^"\\]*(?:\\.[^"\\]*)*)"
    )''', re.VERBOSE | re.DOTALL))
]

def get_rules(jsx, dotted, template_string):
    """
    Get a tokenization rule list given the passed syntax options.

Internal to this module.
    """
    rules = []
    for token_type, rule in _rules:
        if not jsx and token_type and 'jsx' in token_type:
            continue
        if not template_string and token_type == 'template_string':
            continue
        if token_type == 'dotted_name':
            if not dotted:
                continue
            token_type = 'name'
        rules.append((token_type, rule))
    return rules

def indicates_division(token):
    """A helper function that helps the tokenizer to decide if the current
    token may be followed by a division operator.
    """
    if token.type == 'operator':
        return token.value in (')', ']', '}', '++', '--')
    return token.type in ('name', 'number', 'string', 'regexp')

def unquote_string(string):
    """Unquote a string with JavaScript rules.  The string has to start with
    string delimiters (``'``, ``"`` or the back-tick/grave accent (for template strings).)
    """
    assert string and string[0] == string[-1] and string[0] in '"\'`', \
        'string provided is not properly delimited'
    string = line_join_re.sub('\\1', string[1:-1])
    result = []
    add = result.append
    pos = 0

while 1:
        # scan for the next escape
        escape_pos = string.find('\\', pos)
        if escape_pos < 0:
            break
        add(string[pos:escape_pos])

# check which character is escaped
        next_char = string[escape_pos + 1]
        if next_char in escapes:
            add(escapes[next_char])

# unicode escapes.  trie to consume up to four characters of
        # hexadecimal characters and try to interpret them as unicode
        # character point.  If there is no such character point, put
        # all the consumed characters into the string.
        elif next_char in 'uU':
            escaped = uni_escape_re.match(string, escape_pos + 2)
            if escaped is not None:
                escaped_value = escaped.group()
                if len(escaped_value) == 4:
                    try:
                        add(unichr(int(escaped_value, 16)))
                    except ValueError:
                        pass
                    else:
                        pos = escape_pos + 6
                        continue
                add(next_char + escaped_value)
                pos = escaped.end()
                continue
            else:
                add(next_char)

# bogus escape.  Just remove the backslash.
        else:
            add(next_char)
        pos = escape_pos + 2

if pos < len(string):
        add(string[pos:])

return u''.join(result)

def tokenize(source, jsx=True, dotted=True, template_string=True):
    """
    Tokenize JavaScript/JSX source.  Returns a generator of tokens.

:param jsx: Enable (limited) JSX parsing.
    :param dotted: Read dotted names as single name token.
    :param template_string: Support ES6 template strings
    """
    may_divide = False
    pos = 0
    lineno = 1
    end = len(source)
    rules = get_rules(jsx=jsx, dotted=dotted, template_string=template_string)

while pos < end:
        # handle regular rules first
        for token_type, rule in rules:
            match = rule.match(source, pos)
            if match is not None:
                break
        # if we don't have a match we don't give up yet, but check for
        # division operators or regular expression literals, based on
        # the status of `may_divide` which is determined by the last
        # processed non-whitespace token using `indicates_division`.
        else:
            if may_divide:
                match = division_re.match(source, pos)
                token_type = 'operator'
            else:
                match = regex_re.match(source, pos)
                token_type = 'regexp'
            if match is None:
                # woops. invalid syntax. jump one char ahead and try again.
                pos += 1
                continue

token_value = match.group()
        if token_type is not None:
            token = Token(token_type, token_value, lineno)
            may_divide = indicates_division(token)
            yield token
        lineno += len(line_re.findall(token_value))
        pos = match.end()

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