from bu4.parsing.abstractparser import AbstractParser
from bu4.parsing.constructs.linked import Parsed
from bu4.parsing.states.parsestate import ParseState
from bu4.parsing.states.psfinal import PSFinal
from bu4.parsing.targets.pstarget import PSTarget

__all__ = ('PSEndsWith',)


class PSEndsWith(PSTarget):
    def __init__(self, parser: AbstractParser, c: int, msg: str):
        self.parser = parser
        self.c = c
        self.msg = msg

    def given(self, parsed: Parsed) -> ParseState:
        assert self.parser.read() == self.c, self.msg
        return PSFinal(parsed)