bazarr/libs/js2py/internals/constructors/jsregexp.py

42 lines
1.2 KiB
Python

from __future__ import unicode_literals
from ..conversions import *
from ..func_utils import *
from ..base import SpaceTuple
REG_EXP_FLAGS = ('g', 'i', 'm')
def RegExp(this, args):
pattern = get_arg(args, 0)
flags = get_arg(args, 1)
if GetClass(pattern) == 'RegExp':
if not is_undefined(flags):
raise MakeError(
'TypeError',
'Cannot supply flags when constructing one RegExp from another'
)
# return unchanged
return pattern
#pattern is not a regexp
if is_undefined(pattern):
pattern = u''
else:
pattern = to_string(pattern)
flags = to_string(flags) if not is_undefined(flags) else u''
for flag in flags:
if flag not in REG_EXP_FLAGS:
raise MakeError(
'SyntaxError',
'Invalid flags supplied to RegExp constructor "%s"' % flag)
if len(set(flags)) != len(flags):
raise MakeError(
'SyntaxError',
'Invalid flags supplied to RegExp constructor "%s"' % flags)
return args.space.NewRegExp(pattern, flags)
def RegExpCreate(args, space):
_args = SpaceTuple(args)
_args.space = space
return RegExp(undefined, _args)