testbed/lark-parser__lark/examples/standalone/json_parser.py

# The file was automatically generated by Lark v0.9.0
__version__ = "0.9.0"

#
#
#   Lark Stand-alone Generator Tool
# ----------------------------------
# Generates a stand-alone LALR(1) parser with a standard lexer
#
# Git:    https://github.com/erezsh/lark
# Author: Erez Shinan (erezshin@gmail.com)
#
#
#    >>> LICENSE
#
#    This tool and its generated code use a separate license from Lark,
#    and are subject to the terms of the Mozilla Public License, v. 2.0.
#    If a copy of the MPL was not distributed with this
#    file, You can obtain one at https://mozilla.org/MPL/2.0/.
#
#    If you wish to purchase a commercial license for this tool and its
#    generated code, you may contact me via email or otherwise.
#
#    If MPL2 is incompatible with your free or open-source project,
#    contact me and we'll work it out.
#
#

import os
from io import open



class LarkError(Exception):
    pass

class GrammarError(LarkError):
    pass

class ParseError(LarkError):
    pass

class LexError(LarkError):
    pass

class UnexpectedEOF(ParseError):
    def __init__(self, expected):
        self.expected = expected

        message = ("Unexpected end-of-input. Expected one of: \n\t* %s\n" % '\n\t* '.join(x.name for x in self.expected))
        super(UnexpectedEOF, self).__init__(message)


class UnexpectedInput(LarkError):
    #--
    pos_in_stream = None

    def get_context(self, text, span=40):
        #--
        pos = self.pos_in_stream
        start = max(pos - span, 0)
        end = pos + span
        if not isinstance(text, bytes):
            before = text[start:pos].rsplit('\n', 1)[-1]
            after = text[pos:end].split('\n', 1)[0]
            return before + after + '\n' + ' ' * len(before) + '^\n'
        else:
            before = text[start:pos].rsplit(b'\n', 1)[-1]
            after = text[pos:end].split(b'\n', 1)[0]
            return (before + after + b'\n' + b' ' * len(before) + b'^\n').decode("ascii", "backslashreplace")

    def match_examples(self, parse_fn, examples, token_type_match_fallback=False, use_accepts=False):
        #--
        assert self.state is not None, "Not supported for this exception"

        if isinstance(examples, dict):
            examples = examples.items()

        candidate = (None, False)
        for i, (label, example) in enumerate(examples):
            assert not isinstance(example, STRING_TYPE)

            for j, malformed in enumerate(example):
                try:
                    parse_fn(malformed)
                except UnexpectedInput as ut:
                    if ut.state == self.state:
                        if use_accepts and ut.accepts != self.accepts:
                            logger.debug("Different accepts with same state[%d]: %s != %s at example [%s][%s]" %
                                        (self.state, self.accepts, ut.accepts, i, j))
                            continue
                        try:
                            if ut.token == self.token:  ##

                                logger.debug("Exact Match at example [%s][%s]" % (i, j))
                                return label

                            if token_type_match_fallback:
                                ##

                                if (ut.token.type == self.token.type) and not candidate[-1]:
                                    logger.debug("Token Type Fallback at example [%s][%s]" % (i, j))
                                    candidate = label, True

                        except AttributeError:
                            pass
                        if not candidate[0]:
                            logger.debug("Same State match at example [%s][%s]" % (i, j))
                            candidate = label, False

        return candidate[0]


class UnexpectedCharacters(LexError, UnexpectedInput):
    def __init__(self, seq, lex_pos, line, column, allowed=None, considered_tokens=None, state=None, token_history=None):
        self.line = line
        self.column = column
        self.pos_in_stream = lex_pos
        self.state = state

        self.allowed = allowed
        self.considered_tokens = considered_tokens

        if isinstance(seq, bytes):
            _s = seq[lex_pos:lex_pos+1].decode("ascii", "backslashreplace")
        else:
            _s = seq[lex_pos]

        message = "No terminal defined for '%s' at line %d col %d" % (_s, line, column)
        message += '\n\n' + self.get_context(seq)
        if allowed:
            message += '\nExpecting: %s\n' % allowed
        if token_history:
            message += '\nPrevious tokens: %s\n' % ', '.join(repr(t) for t in token_history)

        super(UnexpectedCharacters, self).__init__(message)


class UnexpectedToken(ParseError, UnexpectedInput):
    #--
    def __init__(self, token, expected, considered_rules=None, state=None, puppet=None):
        self.line = getattr(token, 'line', '?')
        self.column = getattr(token, 'column', '?')
        self.pos_in_stream = getattr(token, 'pos_in_stream', None)
        self.state = state

        self.token = token
        self.expected = expected     ##

        self.considered_rules = considered_rules
        self.puppet = puppet

        ##

        ##

        self.accepts = puppet and puppet.accepts()

        message = ("Unexpected token %r at line %s, column %s.\n"
                   "Expected one of: \n\t* %s\n"
                   % (token, self.line, self.column, '\n\t* '.join(self.accepts or self.expected)))

        super(UnexpectedToken, self).__init__(message)


class VisitError(LarkError):
    #--
    def __init__(self, rule, obj, orig_exc):
        self.obj = obj
        self.orig_exc = orig_exc

        message = 'Error trying to process rule "%s":\n\n%s' % (rule, orig_exc)
        super(VisitError, self).__init__(message)

import logging
logger = logging.getLogger("lark")
logger.addHandler(logging.StreamHandler())
##

##

logger.setLevel(logging.CRITICAL)


def classify(seq, key=None, value=None):
    d = {}
    for item in seq:
        k = key(item) if (key is not None) else item
        v = value(item) if (value is not None) else item
        if k in d:
            d[k].append(v)
        else:
            d[k] = [v]
    return d


def _deserialize(data, namespace, memo):
    if isinstance(data, dict):
        if '__type__' in data: ##

            class_ = namespace[data['__type__']]
            return class_.deserialize(data, memo)
        elif '@' in data:
            return memo[data['@']]
        return {key:_deserialize(value, namespace, memo) for key, value in data.items()}
    elif isinstance(data, list):
        return [_deserialize(value, namespace, memo) for value in data]
    return data


class Serialize(object):
    def memo_serialize(self, types_to_memoize):
        memo = SerializeMemoizer(types_to_memoize)
        return self.serialize(memo), memo.serialize()

    def serialize(self, memo=None):
        if memo and memo.in_types(self):
            return {'@': memo.memoized.get(self)}

        fields = getattr(self, '__serialize_fields__')
        res = {f: _serialize(getattr(self, f), memo) for f in fields}
        res['__type__'] = type(self).__name__
        postprocess = getattr(self, '_serialize', None)
        if postprocess:
            postprocess(res, memo)
        return res

    @classmethod
    def deserialize(cls, data, memo):
        namespace = getattr(cls, '__serialize_namespace__', {})
        namespace = {c.__name__:c for c in namespace}

        fields = getattr(cls, '__serialize_fields__')

        if '@' in data:
            return memo[data['@']]

        inst = cls.__new__(cls)
        for f in fields:
            try:
                setattr(inst, f, _deserialize(data[f], namespace, memo))
            except KeyError as e:
                raise KeyError("Cannot find key for class", cls, e)
        postprocess = getattr(inst, '_deserialize', None)
        if postprocess:
            postprocess()
        return inst


class SerializeMemoizer(Serialize):
    __serialize_fields__ = 'memoized',

    def __init__(self, types_to_memoize):
        self.types_to_memoize = tuple(types_to_memoize)
        self.memoized = Enumerator()

    def in_types(self, value):
        return isinstance(value, self.types_to_memoize)

    def serialize(self):
        return _serialize(self.memoized.reversed(), None)

    @classmethod
    def deserialize(cls, data, namespace, memo):
        return _deserialize(data, namespace, memo)



try:
    STRING_TYPE = basestring
except NameError:   ##

    STRING_TYPE = str


import types
from functools import wraps, partial
from contextlib import contextmanager

Str = type(u'')
try:
    classtype = types.ClassType ##

except AttributeError:
    classtype = type    ##


def smart_decorator(f, create_decorator):
    if isinstance(f, types.FunctionType):
        return wraps(f)(create_decorator(f, True))

    elif isinstance(f, (classtype, type, types.BuiltinFunctionType)):
        return wraps(f)(create_decorator(f, False))

    elif isinstance(f, types.MethodType):
        return wraps(f)(create_decorator(f.__func__, True))

    elif isinstance(f, partial):
        ##

        return wraps(f.func)(create_decorator(lambda *args, **kw: f(*args[1:], **kw), True))

    else:
        return create_decorator(f.__func__.__call__, True)

try:
    import regex
except ImportError:
    regex = None

import sys, re
Py36 = (sys.version_info[:2] >= (3, 6))

import sre_parse
import sre_constants
categ_pattern = re.compile(r'\\p{[A-Za-z_]+}')
def get_regexp_width(expr):
    if regex:
        ##

        ##

        ##

        regexp_final = re.sub(categ_pattern, 'A', expr)
    else:
        if re.search(categ_pattern, expr):
            raise ImportError('`regex` module must be installed in order to use Unicode categories.', expr)
        regexp_final = expr
    try:
        return [int(x) for x in sre_parse.parse(regexp_final).getwidth()]
    except sre_constants.error:
        raise ValueError(expr)


from collections import OrderedDict


class Meta:
    def __init__(self):
        self.empty = True


class Tree(object):
    #--
    def __init__(self, data, children, meta=None):
        self.data = data
        self.children = children
        self._meta = meta

    @property
    def meta(self):
        if self._meta is None:
            self._meta = Meta()
        return self._meta

    def __repr__(self):
        return 'Tree(%s, %s)' % (self.data, self.children)

    def _pretty_label(self):
        return self.data

    def _pretty(self, level, indent_str):
        if len(self.children) == 1 and not isinstance(self.children[0], Tree):
            return [ indent_str*level, self._pretty_label(), '\t', '%s' % (self.children[0],), '\n']

        l = [ indent_str*level, self._pretty_label(), '\n' ]
        for n in self.children:
            if isinstance(n, Tree):
                l += n._pretty(level+1, indent_str)
            else:
                l += [ indent_str*(level+1), '%s' % (n,), '\n' ]

        return l

    def pretty(self, indent_str='  '):
        #--
        return ''.join(self._pretty(0, indent_str))

    def __eq__(self, other):
        try:
            return self.data == other.data and self.children == other.children
        except AttributeError:
            return False

    def __ne__(self, other):
        return not (self == other)

    def __hash__(self):
        return hash((self.data, tuple(self.children)))

    def iter_subtrees(self):
        #--
        queue = [self]
        subtrees = OrderedDict()
        for subtree in queue:
            subtrees[id(subtree)] = subtree
            queue += [c for c in reversed(subtree.children)
                      if isinstance(c, Tree) and id(c) not in subtrees]

        del queue
        return reversed(list(subtrees.values()))

    def find_pred(self, pred):
        #--
        return filter(pred, self.iter_subtrees())

    def find_data(self, data):
        #--
        return self.find_pred(lambda t: t.data == data)


from inspect import getmembers, getmro

class Discard(Exception):
    #--
    pass

##


class _Decoratable:
    #--

    @classmethod
    def _apply_decorator(cls, decorator, **kwargs):
        mro = getmro(cls)
        assert mro[0] is cls
        libmembers = {name for _cls in mro[1:] for name, _ in getmembers(_cls)}
        for name, value in getmembers(cls):

            ##

            if name.startswith('_') or (name in libmembers and name not in cls.__dict__):
                continue
            if not callable(value):
                continue

            ##

            if hasattr(cls.__dict__[name], 'vargs_applied') or hasattr(value, 'vargs_applied'):
                continue

            static = isinstance(cls.__dict__[name], (staticmethod, classmethod))
            setattr(cls, name, decorator(value, static=static, **kwargs))
        return cls

    def __class_getitem__(cls, _):
        return cls


class Transformer(_Decoratable):
    #--
    __visit_tokens__ = True   ##


    def __init__(self,  visit_tokens=True):
        self.__visit_tokens__ = visit_tokens

    def _call_userfunc(self, tree, new_children=None):
        ##

        children = new_children if new_children is not None else tree.children
        try:
            f = getattr(self, tree.data)
        except AttributeError:
            return self.__default__(tree.data, children, tree.meta)
        else:
            try:
                wrapper = getattr(f, 'visit_wrapper', None)
                if wrapper is not None:
                    return f.visit_wrapper(f, tree.data, children, tree.meta)
                else:
                    return f(children)
            except (GrammarError, Discard):
                raise
            except Exception as e:
                raise VisitError(tree.data, tree, e)

    def _call_userfunc_token(self, token):
        try:
            f = getattr(self, token.type)
        except AttributeError:
            return self.__default_token__(token)
        else:
            try:
                return f(token)
            except (GrammarError, Discard):
                raise
            except Exception as e:
                raise VisitError(token.type, token, e)


    def _transform_children(self, children):
        for c in children:
            try:
                if isinstance(c, Tree):
                    yield self._transform_tree(c)
                elif self.__visit_tokens__ and isinstance(c, Token):
                    yield self._call_userfunc_token(c)
                else:
                    yield c
            except Discard:
                pass

    def _transform_tree(self, tree):
        children = list(self._transform_children(tree.children))
        return self._call_userfunc(tree, children)

    def transform(self, tree):
        return self._transform_tree(tree)

    def __mul__(self, other):
        return TransformerChain(self, other)

    def __default__(self, data, children, meta):
        #--
        return Tree(data, children, meta)

    def __default_token__(self, token):
        #--
        return token



class InlineTransformer(Transformer):   ##

    def _call_userfunc(self, tree, new_children=None):
        ##

        children = new_children if new_children is not None else tree.children
        try:
            f = getattr(self, tree.data)
        except AttributeError:
            return self.__default__(tree.data, children, tree.meta)
        else:
            return f(*children)


class TransformerChain(object):
    def __init__(self, *transformers):
        self.transformers = transformers

    def transform(self, tree):
        for t in self.transformers:
            tree = t.transform(tree)
        return tree

    def __mul__(self, other):
        return TransformerChain(*self.transformers + (other,))


class Transformer_InPlace(Transformer):
    #--
    def _transform_tree(self, tree):           ##

        return self._call_userfunc(tree)

    def transform(self, tree):
        for subtree in tree.iter_subtrees():
            subtree.children = list(self._transform_children(subtree.children))

        return self._transform_tree(tree)


class Transformer_NonRecursive(Transformer):
    #--

    def transform(self, tree):
        ##

        rev_postfix = []
        q = [tree]
        while q:
            t = q.pop()
            rev_postfix.append( t )
            if isinstance(t, Tree):
                q += t.children

        ##

        stack = []
        for x in reversed(rev_postfix):
            if isinstance(x, Tree):
                size = len(x.children)
                if size:
                    args = stack[-size:]
                    del stack[-size:]
                else:
                    args = []
                stack.append(self._call_userfunc(x, args))
            else:
                stack.append(x)

        t ,= stack  ##

        return t



class Transformer_InPlaceRecursive(Transformer):
    #--
    def _transform_tree(self, tree):
        tree.children = list(self._transform_children(tree.children))
        return self._call_userfunc(tree)



##


class VisitorBase:
    def _call_userfunc(self, tree):
        return getattr(self, tree.data, self.__default__)(tree)

    def __default__(self, tree):
        #--
        return tree

    def __class_getitem__(cls, _):
        return cls


class Visitor(VisitorBase):
    #--

    def visit(self, tree):
        for subtree in tree.iter_subtrees():
            self._call_userfunc(subtree)
        return tree

    def visit_topdown(self,tree):
        for subtree in tree.iter_subtrees_topdown():
            self._call_userfunc(subtree)
        return tree


class Visitor_Recursive(VisitorBase):
    #--

    def visit(self, tree):
        for child in tree.children:
            if isinstance(child, Tree):
                self.visit(child)

        self._call_userfunc(tree)
        return tree

    def visit_topdown(self,tree):
        self._call_userfunc(tree)

        for child in tree.children:
            if isinstance(child, Tree):
                self.visit_topdown(child)

        return tree



def visit_children_decor(func):
    #--
    @wraps(func)
    def inner(cls, tree):
        values = cls.visit_children(tree)
        return func(cls, values)
    return inner


class Interpreter(_Decoratable):
    #--

    def visit(self, tree):
        f = getattr(self, tree.data)
        wrapper = getattr(f, 'visit_wrapper', None)
        if wrapper is not None:
            return f.visit_wrapper(f, tree.data, tree.children, tree.meta)
        else:
            return f(tree)

    def visit_children(self, tree):
        return [self.visit(child) if isinstance(child, Tree) else child
                for child in tree.children]

    def __getattr__(self, name):
        return self.__default__

    def __default__(self, tree):
        return self.visit_children(tree)




##


def _apply_decorator(obj, decorator, **kwargs):
    try:
        _apply = obj._apply_decorator
    except AttributeError:
        return decorator(obj, **kwargs)
    else:
        return _apply(decorator, **kwargs)



def _inline_args__func(func):
    @wraps(func)
    def create_decorator(_f, with_self):
        if with_self:
            def f(self, children):
                return _f(self, *children)
        else:
            def f(self, children):
                return _f(*children)
        return f

    return smart_decorator(func, create_decorator)


def inline_args(obj):   ##

    return _apply_decorator(obj, _inline_args__func)



def _visitor_args_func_dec(func, visit_wrapper=None, static=False):
    def create_decorator(_f, with_self):
        if with_self:
            def f(self, *args, **kwargs):
                return _f(self, *args, **kwargs)
        else:
            def f(self, *args, **kwargs):
                return _f(*args, **kwargs)
        return f

    if static:
        f = wraps(func)(create_decorator(func, False))
    else:
        f = smart_decorator(func, create_decorator)
    f.vargs_applied = True
    f.visit_wrapper = visit_wrapper
    return f


def _vargs_inline(f, data, children, meta):
    return f(*children)
def _vargs_meta_inline(f, data, children, meta):
    return f(meta, *children)
def _vargs_meta(f, data, children, meta):
    return f(children, meta)   ##

def _vargs_tree(f, data, children, meta):
    return f(Tree(data, children, meta))


def v_args(inline=False, meta=False, tree=False, wrapper=None):
    #--
    if tree and (meta or inline):
        raise ValueError("Visitor functions cannot combine 'tree' with 'meta' or 'inline'.")

    func = None
    if meta:
        if inline:
            func = _vargs_meta_inline
        else:
            func = _vargs_meta
    elif inline:
        func = _vargs_inline
    elif tree:
        func = _vargs_tree

    if wrapper is not None:
        if func is not None:
            raise ValueError("Cannot use 'wrapper' along with 'tree', 'meta' or 'inline'.")
        func = wrapper

    def _visitor_args_dec(obj):
        return _apply_decorator(obj, _visitor_args_func_dec, visit_wrapper=func)
    return _visitor_args_dec



class Indenter:
    def __init__(self):
        self.paren_level = None
        self.indent_level = None
        assert self.tab_len > 0

    def handle_NL(self, token):
        if self.paren_level > 0:
            return

        yield token

        indent_str = token.rsplit('\n', 1)[1] ##

        indent = indent_str.count(' ') + indent_str.count('\t') * self.tab_len

        if indent > self.indent_level[-1]:
            self.indent_level.append(indent)
            yield Token.new_borrow_pos(self.INDENT_type, indent_str, token)
        else:
            while indent < self.indent_level[-1]:
                self.indent_level.pop()
                yield Token.new_borrow_pos(self.DEDENT_type, indent_str, token)

            assert indent == self.indent_level[-1], '%s != %s' % (indent, self.indent_level[-1])

    def _process(self, stream):
        for token in stream:
            if token.type == self.NL_type:
                for t in self.handle_NL(token):
                    yield t
            else:
                yield token

            if token.type in self.OPEN_PAREN_types:
                self.paren_level += 1
            elif token.type in self.CLOSE_PAREN_types:
                self.paren_level -= 1
                assert self.paren_level >= 0

        while len(self.indent_level) > 1:
            self.indent_level.pop()
            yield Token(self.DEDENT_type, '')

        assert self.indent_level == [0], self.indent_level

    def process(self, stream):
        self.paren_level = 0
        self.indent_level = [0]
        return self._process(stream)

    ##

    @property
    def always_accept(self):
        return (self.NL_type,)



class Symbol(Serialize):
    __slots__ = ('name',)

    is_term = NotImplemented

    def __init__(self, name):
        self.name = name

    def __eq__(self, other):
        assert isinstance(other, Symbol), other
        return self.is_term == other.is_term and self.name == other.name

    def __ne__(self, other):
        return not (self == other)

    def __hash__(self):
        return hash(self.name)

    def __repr__(self):
        return '%s(%r)' % (type(self).__name__, self.name)

    fullrepr = property(__repr__)


class Terminal(Symbol):
    __serialize_fields__ = 'name', 'filter_out'

    is_term = True

    def __init__(self, name, filter_out=False):
        self.name = name
        self.filter_out = filter_out

    @property
    def fullrepr(self):
        return '%s(%r, %r)' % (type(self).__name__, self.name, self.filter_out)



class NonTerminal(Symbol):
    __serialize_fields__ = 'name',

    is_term = False



class RuleOptions(Serialize):
    __serialize_fields__ = 'keep_all_tokens', 'expand1', 'priority', 'template_source', 'empty_indices'

    def __init__(self, keep_all_tokens=False, expand1=False, priority=None, template_source=None, empty_indices=()):
        self.keep_all_tokens = keep_all_tokens
        self.expand1 = expand1
        self.priority = priority
        self.template_source = template_source
        self.empty_indices = empty_indices

    def __repr__(self):
        return 'RuleOptions(%r, %r, %r, %r)' % (
            self.keep_all_tokens,
            self.expand1,
            self.priority,
            self.template_source
        )


class Rule(Serialize):
    #--
    __slots__ = ('origin', 'expansion', 'alias', 'options', 'order', '_hash')

    __serialize_fields__ = 'origin', 'expansion', 'order', 'alias', 'options'
    __serialize_namespace__ = Terminal, NonTerminal, RuleOptions

    def __init__(self, origin, expansion, order=0, alias=None, options=None):
        self.origin = origin
        self.expansion = expansion
        self.alias = alias
        self.order = order
        self.options = options or RuleOptions()
        self._hash = hash((self.origin, tuple(self.expansion)))

    def _deserialize(self):
        self._hash = hash((self.origin, tuple(self.expansion)))

    def __str__(self):
        return '<%s : %s>' % (self.origin.name, ' '.join(x.name for x in self.expansion))

    def __repr__(self):
        return 'Rule(%r, %r, %r, %r)' % (self.origin, self.expansion, self.alias, self.options)

    def __hash__(self):
        return self._hash

    def __eq__(self, other):
        if not isinstance(other, Rule):
            return False
        return self.origin == other.origin and self.expansion == other.expansion




from copy import copy

class Pattern(Serialize):

    def __init__(self, value, flags=()):
        self.value = value
        self.flags = frozenset(flags)

    def __repr__(self):
        return repr(self.to_regexp())

    ##

    def __hash__(self):
        return hash((type(self), self.value, self.flags))
    def __eq__(self, other):
        return type(self) == type(other) and self.value == other.value and self.flags == other.flags

    def to_regexp(self):
        raise NotImplementedError()

    if Py36:
        ##

        def _get_flags(self, value):
            for f in self.flags:
                value = ('(?%s:%s)' % (f, value))
            return value

    else:
        def _get_flags(self, value):
            for f in self.flags:
                value = ('(?%s)' % f) + value
            return value


class PatternStr(Pattern):
    __serialize_fields__ = 'value', 'flags'

    type = "str"

    def to_regexp(self):
        return self._get_flags(re.escape(self.value))

    @property
    def min_width(self):
        return len(self.value)
    max_width = min_width

class PatternRE(Pattern):
    __serialize_fields__ = 'value', 'flags', '_width'

    type = "re"

    def to_regexp(self):
        return self._get_flags(self.value)

    _width = None
    def _get_width(self):
        if self._width is None:
            self._width = get_regexp_width(self.to_regexp())
        return self._width

    @property
    def min_width(self):
        return self._get_width()[0]
    @property
    def max_width(self):
        return self._get_width()[1]


class TerminalDef(Serialize):
    __serialize_fields__ = 'name', 'pattern', 'priority'
    __serialize_namespace__ = PatternStr, PatternRE

    def __init__(self, name, pattern, priority=1):
        assert isinstance(pattern, Pattern), pattern
        self.name = name
        self.pattern = pattern
        self.priority = priority

    def __repr__(self):
        return '%s(%r, %r)' % (type(self).__name__, self.name, self.pattern)


class Token(Str):
    #--
    __slots__ = ('type', 'pos_in_stream', 'value', 'line', 'column', 'end_line', 'end_column', 'end_pos')

    def __new__(cls, type_, value, pos_in_stream=None, line=None, column=None, end_line=None, end_column=None, end_pos=None):
        try:
            self = super(Token, cls).__new__(cls, value)
        except UnicodeDecodeError:
            value = value.decode('latin1')
            self = super(Token, cls).__new__(cls, value)

        self.type = type_
        self.pos_in_stream = pos_in_stream
        self.value = value
        self.line = line
        self.column = column
        self.end_line = end_line
        self.end_column = end_column
        self.end_pos = end_pos
        return self

    def update(self, type_=None, value=None):
        return Token.new_borrow_pos(
            type_ if type_ is not None else self.type,
            value if value is not None else self.value,
            self
        )

    @classmethod
    def new_borrow_pos(cls, type_, value, borrow_t):
        return cls(type_, value, borrow_t.pos_in_stream, borrow_t.line, borrow_t.column, borrow_t.end_line, borrow_t.end_column, borrow_t.end_pos)

    def __reduce__(self):
        return (self.__class__, (self.type, self.value, self.pos_in_stream, self.line, self.column, ))

    def __repr__(self):
        return 'Token(%s, %r)' % (self.type, self.value)

    def __deepcopy__(self, memo):
        return Token(self.type, self.value, self.pos_in_stream, self.line, self.column)

    def __eq__(self, other):
        if isinstance(other, Token) and self.type != other.type:
            return False

        return Str.__eq__(self, other)

    __hash__ = Str.__hash__


class LineCounter:
    def __init__(self, newline_char):
        self.newline_char = newline_char
        self.char_pos = 0
        self.line = 1
        self.column = 1
        self.line_start_pos = 0

    def feed(self, token, test_newline=True):
        #--
        if test_newline:
            newlines = token.count(self.newline_char)
            if newlines:
                self.line += newlines
                self.line_start_pos = self.char_pos + token.rindex(self.newline_char) + 1

        self.char_pos += len(token)
        self.column = self.char_pos - self.line_start_pos + 1

class _Lex:
    #--
    def __init__(self, lexer, state=None):
        self.lexer = lexer
        self.state = state

    def lex(self, stream, newline_types, ignore_types):
        newline_types = frozenset(newline_types)
        ignore_types = frozenset(ignore_types)
        line_ctr = LineCounter('\n' if not self.lexer.use_bytes else b'\n')
        last_token = None

        while line_ctr.char_pos < len(stream):
            lexer = self.lexer
            res = lexer.match(stream, line_ctr.char_pos)
            if not res:
                allowed = {v for m, tfi in lexer.mres for v in tfi.values()} - ignore_types
                if not allowed:
                    allowed = {"<END-OF-FILE>"}
                raise UnexpectedCharacters(stream, line_ctr.char_pos, line_ctr.line, line_ctr.column, allowed=allowed, state=self.state, token_history=last_token and [last_token])

            value, type_ = res

            if type_ not in ignore_types:
                t = Token(type_, value, line_ctr.char_pos, line_ctr.line, line_ctr.column)
                line_ctr.feed(value, type_ in newline_types)
                t.end_line = line_ctr.line
                t.end_column = line_ctr.column
                t.end_pos = line_ctr.char_pos
                if t.type in lexer.callback:
                    t = lexer.callback[t.type](t)
                    if not isinstance(t, Token):
                        raise ValueError("Callbacks must return a token (returned %r)" % t)
                yield t
                last_token = t
            else:
                if type_ in lexer.callback:
                    t2 = Token(type_, value, line_ctr.char_pos, line_ctr.line, line_ctr.column)
                    lexer.callback[type_](t2)
                line_ctr.feed(value, type_ in newline_types)




class UnlessCallback:
    def __init__(self, mres):
        self.mres = mres

    def __call__(self, t):
        for mre, type_from_index in self.mres:
            m = mre.match(t.value)
            if m:
                t.type = type_from_index[m.lastindex]
                break
        return t

class CallChain:
    def __init__(self, callback1, callback2, cond):
        self.callback1 = callback1
        self.callback2 = callback2
        self.cond = cond

    def __call__(self, t):
        t2 = self.callback1(t)
        return self.callback2(t) if self.cond(t2) else t2





def _create_unless(terminals, g_regex_flags, re_, use_bytes):
    tokens_by_type = classify(terminals, lambda t: type(t.pattern))
    assert len(tokens_by_type) <= 2, tokens_by_type.keys()
    embedded_strs = set()
    callback = {}
    for retok in tokens_by_type.get(PatternRE, []):
        unless = [] ##

        for strtok in tokens_by_type.get(PatternStr, []):
            if strtok.priority > retok.priority:
                continue
            s = strtok.pattern.value
            m = re_.match(retok.pattern.to_regexp(), s, g_regex_flags)
            if m and m.group(0) == s:
                unless.append(strtok)
                if strtok.pattern.flags <= retok.pattern.flags:
                    embedded_strs.add(strtok)
        if unless:
            callback[retok.name] = UnlessCallback(build_mres(unless, g_regex_flags, re_, match_whole=True, use_bytes=use_bytes))

    terminals = [t for t in terminals if t not in embedded_strs]
    return terminals, callback


def _build_mres(terminals, max_size, g_regex_flags, match_whole, re_, use_bytes):
    ##

    ##

    ##

    postfix = '$' if match_whole else ''
    mres = []
    while terminals:
        pattern = u'|'.join(u'(?P<%s>%s)' % (t.name, t.pattern.to_regexp() + postfix) for t in terminals[:max_size])
        if use_bytes:
            pattern = pattern.encode('latin-1')
        try:
            mre = re_.compile(pattern, g_regex_flags)
        except AssertionError:  ##

            return _build_mres(terminals, max_size//2, g_regex_flags, match_whole, re_, use_bytes)

        ##

        mres.append((mre, {i:n for n,i in mre.groupindex.items()} ))
        terminals = terminals[max_size:]
    return mres

def build_mres(terminals, g_regex_flags, re_, use_bytes, match_whole=False):
    return _build_mres(terminals, len(terminals), g_regex_flags, match_whole, re_, use_bytes)

def _regexp_has_newline(r):
    #--
    return '\n' in r or '\\n' in r or '\\s' in r or '[^' in r or ('(?s' in r and '.' in r)

class Lexer(object):
    #--
    lex = NotImplemented


class TraditionalLexer(Lexer):

    def __init__(self, conf):
        terminals = list(conf.tokens)
        assert all(isinstance(t, TerminalDef) for t in terminals), terminals

        self.re = conf.re_module

        if not conf.skip_validation:
            ##

            for t in terminals:
                try:
                    self.re.compile(t.pattern.to_regexp(), conf.g_regex_flags)
                except self.re.error:
                    raise LexError("Cannot compile token %s: %s" % (t.name, t.pattern))

                if t.pattern.min_width == 0:
                    raise LexError("Lexer does not allow zero-width terminals. (%s: %s)" % (t.name, t.pattern))

            assert set(conf.ignore) <= {t.name for t in terminals}

        ##

        self.newline_types = [t.name for t in terminals if _regexp_has_newline(t.pattern.to_regexp())]
        self.ignore_types = list(conf.ignore)

        terminals.sort(key=lambda x:(-x.priority, -x.pattern.max_width, -len(x.pattern.value), x.name))
        self.terminals = terminals
        self.user_callbacks = conf.callbacks
        self.g_regex_flags = conf.g_regex_flags
        self.use_bytes = conf.use_bytes

        self._mres = None
        ##


    def _build(self):
        terminals, self.callback = _create_unless(self.terminals, self.g_regex_flags, re_=self.re, use_bytes=self.use_bytes)
        assert all(self.callback.values())

        for type_, f in self.user_callbacks.items():
            if type_ in self.callback:
                ##

                self.callback[type_] = CallChain(self.callback[type_], f, lambda t: t.type == type_)
            else:
                self.callback[type_] = f

        self._mres = build_mres(terminals, self.g_regex_flags, self.re, self.use_bytes)

    @property
    def mres(self):
        if self._mres is None:
            self._build()
        return self._mres

    def match(self, stream, pos):
        for mre, type_from_index in self.mres:
            m = mre.match(stream, pos)
            if m:
                return m.group(0), type_from_index[m.lastindex]

    def lex(self, stream):
        return _Lex(self).lex(stream, self.newline_types, self.ignore_types)




class ContextualLexer(Lexer):

    def __init__(self, conf, states, always_accept=()):
        terminals = list(conf.tokens)
        tokens_by_name = {}
        for t in terminals:
            assert t.name not in tokens_by_name, t
            tokens_by_name[t.name] = t

        trad_conf = copy(conf)
        trad_conf.tokens = terminals

        lexer_by_tokens = {}
        self.lexers = {}
        for state, accepts in states.items():
            key = frozenset(accepts)
            try:
                lexer = lexer_by_tokens[key]
            except KeyError:
                accepts = set(accepts) | set(conf.ignore) | set(always_accept)
                state_tokens = [tokens_by_name[n] for n in accepts if n and n in tokens_by_name]
                lexer_conf = copy(trad_conf)
                lexer_conf.tokens = state_tokens
                lexer = TraditionalLexer(lexer_conf)
                lexer_by_tokens[key] = lexer

            self.lexers[state] = lexer

        assert trad_conf.tokens is terminals
        self.root_lexer = TraditionalLexer(trad_conf)

    def lex(self, stream, get_parser_state):
        parser_state = get_parser_state()
        l = _Lex(self.lexers[parser_state], parser_state)
        try:
            for x in l.lex(stream, self.root_lexer.newline_types, self.root_lexer.ignore_types):
                yield x
                parser_state = get_parser_state()
                l.lexer = self.lexers[parser_state]
                l.state = parser_state ##

        except UnexpectedCharacters as e:
            ##

            ##

            ##

            root_match = self.root_lexer.match(stream, e.pos_in_stream)
            if not root_match:
                raise

            value, type_ = root_match
            t = Token(type_, value, e.pos_in_stream, e.line, e.column)
            raise UnexpectedToken(t, e.allowed, state=e.state)



class LexerConf(Serialize):
    __serialize_fields__ = 'tokens', 'ignore', 'g_regex_flags', 'use_bytes'
    __serialize_namespace__ = TerminalDef,

    def __init__(self, tokens, re_module, ignore=(), postlex=None, callbacks=None, g_regex_flags=0, skip_validation=False, use_bytes=False):
        self.tokens = tokens    ##

        self.ignore = ignore
        self.postlex = postlex
        self.callbacks = callbacks or {}
        self.g_regex_flags = g_regex_flags
        self.re_module = re_module
        self.skip_validation = skip_validation
        self.use_bytes = use_bytes


from functools import partial, wraps
from itertools import repeat, product


class ExpandSingleChild:
    def __init__(self, node_builder):
        self.node_builder = node_builder

    def __call__(self, children):
        if len(children) == 1:
            return children[0]
        else:
            return self.node_builder(children)

class PropagatePositions:
    def __init__(self, node_builder):
        self.node_builder = node_builder

    def __call__(self, children):
        res = self.node_builder(children)

        ##

        if isinstance(res, Tree):
            res_meta = res.meta
            for c in children:
                if isinstance(c, Tree):
                    child_meta = c.meta
                    if not child_meta.empty:
                        res_meta.line = child_meta.line
                        res_meta.column = child_meta.column
                        res_meta.start_pos = child_meta.start_pos
                        res_meta.empty = False
                        break
                elif isinstance(c, Token):
                    res_meta.line = c.line
                    res_meta.column = c.column
                    res_meta.start_pos = c.pos_in_stream
                    res_meta.empty = False
                    break

            for c in reversed(children):
                if isinstance(c, Tree):
                    child_meta = c.meta
                    if not child_meta.empty:
                        res_meta.end_line = child_meta.end_line
                        res_meta.end_column = child_meta.end_column
                        res_meta.end_pos = child_meta.end_pos
                        res_meta.empty = False
                        break
                elif isinstance(c, Token):
                    res_meta.end_line = c.end_line
                    res_meta.end_column = c.end_column
                    res_meta.end_pos = c.end_pos
                    res_meta.empty = False
                    break

        return res


class ChildFilter:
    def __init__(self, to_include, append_none, node_builder):
        self.node_builder = node_builder
        self.to_include = to_include
        self.append_none = append_none

    def __call__(self, children):
        filtered = []

        for i, to_expand, add_none in self.to_include:
            if add_none:
                filtered += [None] * add_none
            if to_expand:
                filtered += children[i].children
            else:
                filtered.append(children[i])

        if self.append_none:
            filtered += [None] * self.append_none

        return self.node_builder(filtered)

class ChildFilterLALR(ChildFilter):
    #--

    def __call__(self, children):
        filtered = []
        for i, to_expand, add_none in self.to_include:
            if add_none:
                filtered += [None] * add_none
            if to_expand:
                if filtered:
                    filtered += children[i].children
                else:   ##

                    filtered = children[i].children
            else:
                filtered.append(children[i])

        if self.append_none:
            filtered += [None] * self.append_none

        return self.node_builder(filtered)

class ChildFilterLALR_NoPlaceholders(ChildFilter):
    #--
    def __init__(self, to_include, node_builder):
        self.node_builder = node_builder
        self.to_include = to_include

    def __call__(self, children):
        filtered = []
        for i, to_expand in self.to_include:
            if to_expand:
                if filtered:
                    filtered += children[i].children
                else:   ##

                    filtered = children[i].children
            else:
                filtered.append(children[i])
        return self.node_builder(filtered)

def _should_expand(sym):
    return not sym.is_term and sym.name.startswith('_')

def maybe_create_child_filter(expansion, keep_all_tokens, ambiguous, _empty_indices):
    ##

    if _empty_indices:
        assert _empty_indices.count(False) == len(expansion)
        s = ''.join(str(int(b)) for b in _empty_indices)
        empty_indices = [len(ones) for ones in s.split('0')]
        assert len(empty_indices) == len(expansion)+1, (empty_indices, len(expansion))
    else:
        empty_indices = [0] * (len(expansion)+1)

    to_include = []
    nones_to_add = 0
    for i, sym in enumerate(expansion):
        nones_to_add += empty_indices[i]
        if keep_all_tokens or not (sym.is_term and sym.filter_out):
            to_include.append((i, _should_expand(sym), nones_to_add))
            nones_to_add = 0

    nones_to_add += empty_indices[len(expansion)]

    if _empty_indices or len(to_include) < len(expansion) or any(to_expand for i, to_expand,_ in to_include):
        if _empty_indices or ambiguous:
            return partial(ChildFilter if ambiguous else ChildFilterLALR, to_include, nones_to_add)
        else:
            ##

            return partial(ChildFilterLALR_NoPlaceholders, [(i, x) for i,x,_ in to_include])

class AmbiguousExpander:
    #--
    def __init__(self, to_expand, tree_class, node_builder):
        self.node_builder = node_builder
        self.tree_class = tree_class
        self.to_expand = to_expand

    def __call__(self, children):
        def _is_ambig_tree(child):
            return hasattr(child, 'data') and child.data == '_ambig'

        ##

        ##

        ##

        ##

        ambiguous = []
        for i, child in enumerate(children):
            if _is_ambig_tree(child):
                if i in self.to_expand:
                    ambiguous.append(i)

                to_expand = [j for j, grandchild in enumerate(child.children) if _is_ambig_tree(grandchild)]
                child.expand_kids_by_index(*to_expand)

        if not ambiguous:
            return self.node_builder(children)

        expand = [ iter(child.children) if i in ambiguous else repeat(child) for i, child in enumerate(children) ]
        return self.tree_class('_ambig', [self.node_builder(list(f[0])) for f in product(zip(*expand))])

def maybe_create_ambiguous_expander(tree_class, expansion, keep_all_tokens):
    to_expand = [i for i, sym in enumerate(expansion)
                 if keep_all_tokens or ((not (sym.is_term and sym.filter_out)) and _should_expand(sym))]
    if to_expand:
        return partial(AmbiguousExpander, to_expand, tree_class)

def ptb_inline_args(func):
    @wraps(func)
    def f(children):
        return func(*children)
    return f

def inplace_transformer(func):
    @wraps(func)
    def f(children):
        ##

        tree = Tree(func.__name__, children)
        return func(tree)
    return f

def apply_visit_wrapper(func, name, wrapper):
    if wrapper is _vargs_meta or wrapper is _vargs_meta_inline:
        raise NotImplementedError("Meta args not supported for internal transformer")
    @wraps(func)
    def f(children):
        return wrapper(func, name, children, None)
    return f


class ParseTreeBuilder:
    def __init__(self, rules, tree_class, propagate_positions=False, keep_all_tokens=False, ambiguous=False, maybe_placeholders=False):
        self.tree_class = tree_class
        self.propagate_positions = propagate_positions
        self.always_keep_all_tokens = keep_all_tokens
        self.ambiguous = ambiguous
        self.maybe_placeholders = maybe_placeholders

        self.rule_builders = list(self._init_builders(rules))

    def _init_builders(self, rules):
        for rule in rules:
            options = rule.options
            keep_all_tokens = self.always_keep_all_tokens or options.keep_all_tokens
            expand_single_child = options.expand1

            wrapper_chain = list(filter(None, [
                (expand_single_child and not rule.alias) and ExpandSingleChild,
                maybe_create_child_filter(rule.expansion, keep_all_tokens, self.ambiguous, options.empty_indices if self.maybe_placeholders else None),
                self.propagate_positions and PropagatePositions,
                self.ambiguous and maybe_create_ambiguous_expander(self.tree_class, rule.expansion, keep_all_tokens),
            ]))

            yield rule, wrapper_chain


    def create_callback(self, transformer=None):
        callbacks = {}

        for rule, wrapper_chain in self.rule_builders:

            user_callback_name = rule.alias or rule.options.template_source or rule.origin.name
            try:
                f = getattr(transformer, user_callback_name)
                ##

                wrapper = getattr(f, 'visit_wrapper', None)
                if wrapper is not None:
                    f = apply_visit_wrapper(f, user_callback_name, wrapper)
                else:
                    if isinstance(transformer, InlineTransformer):
                        f = ptb_inline_args(f)
                    elif isinstance(transformer, Transformer_InPlace):
                        f = inplace_transformer(f)
            except AttributeError:
                f = partial(self.tree_class, user_callback_name)

            for w in wrapper_chain:
                f = w(f)

            if rule in callbacks:
                raise GrammarError("Rule '%s' already exists" % (rule,))

            callbacks[rule] = f

        return callbacks



class LALR_Parser(object):
    def __init__(self, parser_conf, debug=False):
        assert all(r.options.priority is None for r in parser_conf.rules), "LALR doesn't yet support prioritization"
        analysis = LALR_Analyzer(parser_conf, debug=debug)
        analysis.compute_lalr()
        callbacks = parser_conf.callbacks

        self._parse_table = analysis.parse_table
        self.parser_conf = parser_conf
        self.parser = _Parser(analysis.parse_table, callbacks, debug)

    @classmethod
    def deserialize(cls, data, memo, callbacks):
        inst = cls.__new__(cls)
        inst._parse_table = IntParseTable.deserialize(data, memo)
        inst.parser = _Parser(inst._parse_table, callbacks)
        return inst

    def serialize(self, memo):
        return self._parse_table.serialize(memo)

    def parse(self, *args):
        return self.parser.parse(*args)


class _Parser:
    def __init__(self, parse_table, callbacks, debug=False):
        self.parse_table = parse_table
        self.callbacks = callbacks
        self.debug = debug

    def parse(self, seq, start, set_state=None, value_stack=None, state_stack=None):
        token = None
        stream = iter(seq)
        states = self.parse_table.states
        start_state = self.parse_table.start_states[start]
        end_state = self.parse_table.end_states[start]

        state_stack = state_stack or [start_state]
        value_stack = value_stack or []

        if set_state: set_state(start_state)

        def get_action(token):
            state = state_stack[-1]
            try:
                return states[state][token.type]
            except KeyError:
                expected = {s for s in states[state].keys() if s.isupper()}
                try:
                    puppet = ParserPuppet(self, state_stack, value_stack, start, stream, set_state)
                except NameError:   ##

                    puppet = None
                raise UnexpectedToken(token, expected, state=state, puppet=puppet)

        def reduce(rule):
            size = len(rule.expansion)
            if size:
                s = value_stack[-size:]
                del state_stack[-size:]
                del value_stack[-size:]
            else:
                s = []

            value = self.callbacks[rule](s)

            _action, new_state = states[state_stack[-1]][rule.origin.name]
            assert _action is Shift
            state_stack.append(new_state)
            value_stack.append(value)

        ##

        try:
            for token in stream:
                while True:
                    action, arg = get_action(token)
                    assert arg != end_state

                    if action is Shift:
                        state_stack.append(arg)
                        value_stack.append(token)
                        if set_state: set_state(arg)
                        break ##

                    else:
                        reduce(arg)
        except Exception as e:
            if self.debug:
                print("")
                print("STATE STACK DUMP")
                print("----------------")
                for i, s in enumerate(state_stack):
                    print('%d)' % i , s)
                print("")

            raise

        token = Token.new_borrow_pos('$END', '', token) if token else Token('$END', '', 0, 1, 1)
        while True:
            _action, arg = get_action(token)
            assert(_action is Reduce)
            reduce(arg)
            if state_stack[-1] == end_state:
                return value_stack[-1]



class Action:
    def __init__(self, name):
        self.name = name
    def __str__(self):
        return self.name
    def __repr__(self):
        return str(self)

Shift = Action('Shift')
Reduce = Action('Reduce')


class ParseTable:
    def __init__(self, states, start_states, end_states):
        self.states = states
        self.start_states = start_states
        self.end_states = end_states

    def serialize(self, memo):
        tokens = Enumerator()
        rules = Enumerator()

        states = {
            state: {tokens.get(token): ((1, arg.serialize(memo)) if action is Reduce else (0, arg))
                    for token, (action, arg) in actions.items()}
            for state, actions in self.states.items()
        }

        return {
            'tokens': tokens.reversed(),
            'states': states,
            'start_states': self.start_states,
            'end_states': self.end_states,
        }

    @classmethod
    def deserialize(cls, data, memo):
        tokens = data['tokens']
        states = {
            state: {tokens[token]: ((Reduce, Rule.deserialize(arg, memo)) if action==1 else (Shift, arg))
                    for token, (action, arg) in actions.items()}
            for state, actions in data['states'].items()
        }
        return cls(states, data['start_states'], data['end_states'])


class IntParseTable(ParseTable):

    @classmethod
    def from_ParseTable(cls, parse_table):
        enum = list(parse_table.states)
        state_to_idx = {s:i for i,s in enumerate(enum)}
        int_states = {}

        for s, la in parse_table.states.items():
            la = {k:(v[0], state_to_idx[v[1]]) if v[0] is Shift else v
                  for k,v in la.items()}
            int_states[ state_to_idx[s] ] = la


        start_states = {start:state_to_idx[s] for start, s in parse_table.start_states.items()}
        end_states = {start:state_to_idx[s] for start, s in parse_table.end_states.items()}
        return cls(int_states, start_states, end_states)



def get_frontend(parser, lexer):
    if parser=='lalr':
        if lexer is None:
            raise ValueError('The LALR parser requires use of a lexer')
        elif lexer == 'standard':
            return LALR_TraditionalLexer
        elif lexer == 'contextual':
            return LALR_ContextualLexer
        elif issubclass(lexer, Lexer):
            class LALR_CustomLexerWrapper(LALR_CustomLexer):
                def __init__(self, lexer_conf, parser_conf, options=None):
                    super(LALR_CustomLexerWrapper, self).__init__(
                        lexer, lexer_conf, parser_conf, options=options)
                def init_lexer(self):
                    self.lexer = lexer(self.lexer_conf)

            return LALR_CustomLexerWrapper
        else:
            raise ValueError('Unknown lexer: %s' % lexer)
    elif parser=='earley':
        if lexer=='standard':
            return Earley
        elif lexer=='dynamic':
            return XEarley
        elif lexer=='dynamic_complete':
            return XEarley_CompleteLex
        elif lexer=='contextual':
            raise ValueError('The Earley parser does not support the contextual parser')
        else:
            raise ValueError('Unknown lexer: %s' % lexer)
    elif parser == 'cyk':
        if lexer == 'standard':
            return CYK
        else:
            raise ValueError('CYK parser requires using standard parser.')
    else:
        raise ValueError('Unknown parser: %s' % parser)


class _ParserFrontend(Serialize):
    def _parse(self, input, start, *args):
        if start is None:
            start = self.start
            if len(start) > 1:
                raise ValueError("Lark initialized with more than 1 possible start rule. Must specify which start rule to parse", start)
            start ,= start
        return self.parser.parse(input, start, *args)


def _get_lexer_callbacks(transformer, terminals):
    result = {}
    for terminal in terminals:
        callback = getattr(transformer, terminal.name, None)
        if callback is not None:
            result[terminal.name] = callback
    return result


class WithLexer(_ParserFrontend):
    lexer = None
    parser = None
    lexer_conf = None
    start = None

    __serialize_fields__ = 'parser', 'lexer_conf', 'start'
    __serialize_namespace__ = LexerConf,

    def __init__(self, lexer_conf, parser_conf, options=None):
        self.lexer_conf = lexer_conf
        self.start = parser_conf.start
        self.postlex = lexer_conf.postlex

    @classmethod
    def deserialize(cls, data, memo, callbacks, postlex, transformer, re_module):
        inst = super(WithLexer, cls).deserialize(data, memo)

        inst.postlex = postlex
        inst.parser = LALR_Parser.deserialize(inst.parser, memo, callbacks)

        terminals = [item for item in memo.values() if isinstance(item, TerminalDef)]
        inst.lexer_conf.callbacks = _get_lexer_callbacks(transformer, terminals)
        inst.lexer_conf.re_module = re_module
        inst.lexer_conf.skip_validation=True
        inst.init_lexer()

        return inst

    def _serialize(self, data, memo):
        data['parser'] = data['parser'].serialize(memo)

    def lex(self, *args):
        stream = self.lexer.lex(*args)
        return self.postlex.process(stream) if self.postlex else stream

    def parse(self, text, start=None):
        token_stream = self.lex(text)
        return self._parse(token_stream, start)

    def init_traditional_lexer(self):
        self.lexer = TraditionalLexer(self.lexer_conf)

class LALR_WithLexer(WithLexer):
    def __init__(self, lexer_conf, parser_conf, options=None):
        debug = options.debug if options else False
        self.parser = LALR_Parser(parser_conf, debug=debug)
        WithLexer.__init__(self, lexer_conf, parser_conf, options)

        self.init_lexer()

    def init_lexer(self, **kw):
        raise NotImplementedError()

class LALR_TraditionalLexer(LALR_WithLexer):
    def init_lexer(self):
        self.init_traditional_lexer()

class LALR_ContextualLexer(LALR_WithLexer):
    def init_lexer(self):
        states = {idx:list(t.keys()) for idx, t in self.parser._parse_table.states.items()}
        always_accept = self.postlex.always_accept if self.postlex else ()
        self.lexer = ContextualLexer(self.lexer_conf, states, always_accept=always_accept)


    def parse(self, text, start=None):
        parser_state = [None]
        def set_parser_state(s):
            parser_state[0] = s

        token_stream = self.lex(text, lambda: parser_state[0])
        return self._parse(token_stream, start, set_parser_state)


class LarkOptions(Serialize):
    #--
    OPTIONS_DOC = """
    **===  General  ===**

    start
            The start symbol. Either a string, or a list of strings for multiple possible starts (Default: "start")
    debug
            Display debug information, such as warnings (default: False)
    transformer
            Applies the transformer to every parse tree (equivlent to applying it after the parse, but faster)
    propagate_positions
            Propagates (line, column, end_line, end_column) attributes into all tree branches.
    maybe_placeholders
            When True, the ``[]`` operator returns ``None`` when not matched.

            When ``False``,  ``[]`` behaves like the ``?`` operator, and returns no value at all.
            (default= ``False``. Recommended to set to ``True``)
    regex
            When True, uses the ``regex`` module instead of the stdlib ``re``.
    cache
            Cache the results of the Lark grammar analysis, for x2 to x3 faster loading. LALR only for now.

            - When ``False``, does nothing (default)
            - When ``True``, caches to a temporary file in the local directory
            - When given a string, caches to the path pointed by the string

    g_regex_flags
            Flags that are applied to all terminals (both regex and strings)
    keep_all_tokens
            Prevent the tree builder from automagically removing "punctuation" tokens (default: False)

    **=== Algorithm ===**

    parser
            Decides which parser engine to use. Accepts "earley" or "lalr". (Default: "earley").
            (there is also a "cyk" option for legacy)
    lexer
            Decides whether or not to use a lexer stage

            - "auto" (default): Choose for me based on the parser
            - "standard": Use a standard lexer
            - "contextual": Stronger lexer (only works with parser="lalr")
            - "dynamic": Flexible and powerful (only with parser="earley")
            - "dynamic_complete": Same as dynamic, but tries *every* variation of tokenizing possible.
    ambiguity
            Decides how to handle ambiguity in the parse. Only relevant if parser="earley"

            - "resolve" - The parser will automatically choose the simplest derivation
                        (it chooses consistently: greedy for tokens, non-greedy for rules)
            - "explicit": The parser will return all derivations wrapped in "_ambig" tree nodes (i.e. a forest).

    **=== Misc. / Domain Specific ===**

    postlex
            Lexer post-processing (Default: None) Only works with the standard and contextual lexers.
    priority
            How priorities should be evaluated - auto, none, normal, invert (Default: auto)
    lexer_callbacks
            Dictionary of callbacks for the lexer. May alter tokens during lexing. Use with caution.
    use_bytes
            Accept an input of type ``bytes`` instead of ``str`` (Python 3 only).
    edit_terminals
            A callback for editing the terminals before parse.
    """
    if __doc__:
        __doc__ += OPTIONS_DOC

    _defaults = {
        'debug': False,
        'keep_all_tokens': False,
        'tree_class': None,
        'cache': False,
        'postlex': None,
        'parser': 'earley',
        'lexer': 'auto',
        'transformer': None,
        'start': 'start',
        'priority': 'auto',
        'ambiguity': 'auto',
        'regex': False,
        'propagate_positions': False,
        'lexer_callbacks': {},
        'maybe_placeholders': False,
        'edit_terminals': None,
        'g_regex_flags': 0,
        'use_bytes': False,
    }

    def __init__(self, options_dict):
        o = dict(options_dict)

        options = {}
        for name, default in self._defaults.items():
            if name in o:
                value = o.pop(name)
                if isinstance(default, bool) and name not in ('cache', 'use_bytes'):
                    value = bool(value)
            else:
                value = default

            options[name] = value

        if isinstance(options['start'], STRING_TYPE):
            options['start'] = [options['start']]

        self.__dict__['options'] = options

        assert self.parser in ('earley', 'lalr', 'cyk', None)

        if self.parser == 'earley' and self.transformer:
            raise ValueError('Cannot specify an embedded transformer when using the Earley algorithm.'
                             'Please use your transformer on the resulting parse tree, or use a different algorithm (i.e. LALR)')

        if o:
            raise ValueError("Unknown options: %s" % o.keys())

    def __getattr__(self, name):
        try:
            return self.options[name]
        except KeyError as e:
            raise AttributeError(e)

    def __setattr__(self, name, value):
        assert name in self.options
        self.options[name] = value

    def serialize(self, memo):
        return self.options

    @classmethod
    def deserialize(cls, data, memo):
        return cls(data)


class Lark(Serialize):
    #--
    def __init__(self, grammar, **options):
        self.options = LarkOptions(options)

        ##

        use_regex = self.options.regex
        if use_regex:
            if regex:
                re_module = regex
            else:
                raise ImportError('`regex` module must be installed if calling `Lark(regex=True)`.')
        else:
            re_module = re

        ##

        try:
            self.source = grammar.name
        except AttributeError:
            self.source = '<string>'

        ##

        try:
            read = grammar.read
        except AttributeError:
            pass
        else:
            grammar = read()

        assert isinstance(grammar, STRING_TYPE)
        self.grammar_source = grammar
        if self.options.use_bytes:
            if not isascii(grammar):
                raise ValueError("Grammar must be ascii only, when use_bytes=True")
            if sys.version_info[0] == 2 and self.options.use_bytes != 'force':
                raise NotImplementedError("`use_bytes=True` may have issues on python2."
                                          "Use `use_bytes='force'` to use it at your own risk.")

        cache_fn = None
        if self.options.cache:
            if self.options.parser != 'lalr':
                raise NotImplementedError("cache only works with parser='lalr' for now")
            if isinstance(self.options.cache, STRING_TYPE):
                cache_fn = self.options.cache
            else:
                if self.options.cache is not True:
                    raise ValueError("cache argument must be bool or str")
                unhashable = ('transformer', 'postlex', 'lexer_callbacks', 'edit_terminals')
                from . import __version__
                options_str = ''.join(k+str(v) for k, v in options.items() if k not in unhashable)
                s = grammar + options_str + __version__
                md5 = hashlib.md5(s.encode()).hexdigest()
                cache_fn = '.lark_cache_%s.tmp' % md5

            if FS.exists(cache_fn):
                logger.debug('Loading grammar from cache: %s', cache_fn)
                with FS.open(cache_fn, 'rb') as f:
                    self._load(f, self.options.transformer, self.options.postlex)
                return

        if self.options.lexer == 'auto':
            if self.options.parser == 'lalr':
                self.options.lexer = 'contextual'
            elif self.options.parser == 'earley':
                self.options.lexer = 'dynamic'
            elif self.options.parser == 'cyk':
                self.options.lexer = 'standard'
            else:
                assert False, self.options.parser
        lexer = self.options.lexer
        assert lexer in ('standard', 'contextual', 'dynamic', 'dynamic_complete') or issubclass(lexer, Lexer)

        if self.options.ambiguity == 'auto':
            if self.options.parser == 'earley':
                self.options.ambiguity = 'resolve'
        else:
            disambig_parsers = ['earley', 'cyk']
            assert self.options.parser in disambig_parsers, (
                'Only %s supports disambiguation right now') % ', '.join(disambig_parsers)

        if self.options.priority == 'auto':
            if self.options.parser in ('earley', 'cyk', ):
                self.options.priority = 'normal'
            elif self.options.parser in ('lalr', ):
                self.options.priority = None
        elif self.options.priority in ('invert', 'normal'):
            assert self.options.parser in ('earley', 'cyk'), "priorities are not supported for LALR at this time"

        assert self.options.priority in ('auto', None, 'normal', 'invert'), 'invalid priority option specified: {}. options are auto, none, normal, invert.'.format(self.options.priority)
        assert self.options.ambiguity not in ('resolve__antiscore_sum', ), 'resolve__antiscore_sum has been replaced with the option priority="invert"'
        assert self.options.ambiguity in ('resolve', 'explicit', 'auto', )

        ##

        self.grammar = load_grammar(grammar, self.source, re_module)

        ##

        self.terminals, self.rules, self.ignore_tokens = self.grammar.compile(self.options.start)

        if self.options.edit_terminals:
            for t in self.terminals:
                self.options.edit_terminals(t)

        self._terminals_dict = {t.name: t for t in self.terminals}

        ##

        ##

        if self.options.priority == 'invert':
            for rule in self.rules:
                if rule.options.priority is not None:
                    rule.options.priority = -rule.options.priority
        ##

        ##

        ##

        elif self.options.priority == None:
            for rule in self.rules:
                if rule.options.priority is not None:
                    rule.options.priority = None

        ##

        lexer_callbacks = (_get_lexer_callbacks(self.options.transformer, self.terminals)
                           if self.options.transformer
                           else {})
        lexer_callbacks.update(self.options.lexer_callbacks)

        self.lexer_conf = LexerConf(self.terminals, re_module, self.ignore_tokens, self.options.postlex, lexer_callbacks, self.options.g_regex_flags, use_bytes=self.options.use_bytes)

        if self.options.parser:
            self.parser = self._build_parser()
        elif lexer:
            self.lexer = self._build_lexer()

        if cache_fn:
            logger.debug('Saving grammar to cache: %s', cache_fn)
            with FS.open(cache_fn, 'wb') as f:
                self.save(f)

    ##

    __doc__ += "\nOptions:\n" + LarkOptions.OPTIONS_DOC

    __serialize_fields__ = 'parser', 'rules', 'options'

    def _build_lexer(self):
        return TraditionalLexer(self.lexer_conf)

    def _prepare_callbacks(self):
        self.parser_class = get_frontend(self.options.parser, self.options.lexer)
        self._parse_tree_builder = ParseTreeBuilder(self.rules, self.options.tree_class or Tree, self.options.propagate_positions, self.options.keep_all_tokens, self.options.parser!='lalr' and self.options.ambiguity=='explicit', self.options.maybe_placeholders)
        self._callbacks = self._parse_tree_builder.create_callback(self.options.transformer)

    def _build_parser(self):
        self._prepare_callbacks()
        parser_conf = ParserConf(self.rules, self._callbacks, self.options.start)
        return self.parser_class(self.lexer_conf, parser_conf, options=self.options)

    def save(self, f):
        #--
        data, m = self.memo_serialize([TerminalDef, Rule])
        pickle.dump({'data': data, 'memo': m}, f)

    @classmethod
    def load(cls, f):
        #--
        inst = cls.__new__(cls)
        return inst._load(f)

    def _load(self, f, transformer=None, postlex=None):
        if isinstance(f, dict):
            d = f
        else:
            d = pickle.load(f)
        memo = d['memo']
        data = d['data']

        assert memo
        memo = SerializeMemoizer.deserialize(memo, {'Rule': Rule, 'TerminalDef': TerminalDef}, {})
        options = dict(data['options'])
        if transformer is not None:
            options['transformer'] = transformer
        if postlex is not None:
            options['postlex'] = postlex
        self.options = LarkOptions.deserialize(options, memo)
        re_module = regex if self.options.regex else re
        self.rules = [Rule.deserialize(r, memo) for r in data['rules']]
        self.source = '<deserialized>'
        self._prepare_callbacks()
        self.parser = self.parser_class.deserialize(
            data['parser'],
            memo,
            self._callbacks,
            self.options.postlex,
            self.options.transformer,
            re_module
        )
        return self

    @classmethod
    def _load_from_dict(cls, data, memo, transformer=None, postlex=None):
        inst = cls.__new__(cls)
        return inst._load({'data': data, 'memo': memo}, transformer, postlex)

    @classmethod
    def open(cls, grammar_filename, rel_to=None, **options):
        #--
        if rel_to:
            basepath = os.path.dirname(rel_to)
            grammar_filename = os.path.join(basepath, grammar_filename)
        with open(grammar_filename, encoding='utf8') as f:
            return cls(f, **options)

    def __repr__(self):
        return 'Lark(open(%r), parser=%r, lexer=%r, ...)' % (self.source, self.options.parser, self.options.lexer)


    def lex(self, text):
        #--
        if not hasattr(self, 'lexer'):
            self.lexer = self._build_lexer()
        stream = self.lexer.lex(text)
        if self.options.postlex:
            return self.options.postlex.process(stream)
        return stream

    def get_terminal(self, name):
        #--
        return self._terminals_dict[name]

    def parse(self, text, start=None, on_error=None):
        #--

        try:
            return self.parser.parse(text, start=start)
        except UnexpectedToken as e:
            if on_error is None:
                raise

            while True:
                if not on_error(e):
                    raise e
                try:
                    return e.puppet.resume_parse()
                except UnexpectedToken as e2:
                    e = e2



DATA = (
{'parser': {'parser': {'tokens': {0: 'RBRACE', 1: 'COMMA', 2: 'RSQB', 3: '$END', 4: '__object_star_1', 5: 'COLON', 6: 'LBRACE', 7: 'value', 8: 'string', 9: 'object', 10: 'TRUE', 11: 'SIGNED_NUMBER', 12: 'LSQB', 13: 'NULL', 14: 'FALSE', 15: 'array', 16: 'ESCAPED_STRING', 17: '__array_star_0', 18: 'pair', 19: 'start'}, 'states': {0: {0: (1, {'@': 12}), 1: (1, {'@': 12})}, 1: {1: (1, {'@': 13}), 2: (1, {'@': 13}), 0: (1, {'@': 13}), 3: (1, {'@': 13})}, 2: {1: (1, {'@': 14}), 2: (1, {'@': 14}), 0: (1, {'@': 14}), 3: (1, {'@': 14})}, 3: {0: (0, 25), 1: (0, 32)}, 4: {4: (0, 3), 1: (0, 27), 0: (0, 33)}, 5: {0: (1, {'@': 15}), 1: (1, {'@': 15})}, 6: {}, 7: {1: (0, 23), 2: (0, 2)}, 8: {1: (1, {'@': 16}), 2: (1, {'@': 16})}, 9: {1: (1, {'@': 17}), 2: (1, {'@': 17}), 5: (1, {'@': 17}), 0: (1, {'@': 17}), 3: (1, {'@': 17})}, 10: {1: (1, {'@': 18}), 2: (1, {'@': 18}), 0: (1, {'@': 18}), 3: (1, {'@': 18})}, 11: {1: (1, {'@': 19}), 2: (1, {'@': 19}), 0: (1, {'@': 19}), 3: (1, {'@': 19})}, 12: {1: (1, {'@': 20}), 2: (1, {'@': 20}), 0: (1, {'@': 20}), 3: (1, {'@': 20})}, 13: {5: (0, 22)}, 14: {6: (0, 21), 7: (0, 29), 8: (0, 12), 9: (0, 1), 10: (0, 16), 11: (0, 11), 12: (0, 26), 13: (0, 30), 14: (0, 15), 15: (0, 10), 16: (0, 9)}, 15: {1: (1, {'@': 21}), 2: (1, {'@': 21}), 0: (1, {'@': 21}), 3: (1, {'@': 21})}, 16: {1: (1, {'@': 22}), 2: (1, {'@': 22}), 0: (1, {'@': 22}), 3: (1, {'@': 22})}, 17: {1: (1, {'@': 23}), 2: (1, {'@': 23}), 0: (1, {'@': 23}), 3: (1, {'@': 23})}, 18: {2: (0, 24), 1: (0, 14), 17: (0, 7)}, 19: {1: (1, {'@': 24}), 2: (1, {'@': 24}), 0: (1, {'@': 24}), 3: (1, {'@': 24})}, 20: {0: (1, {'@': 25}), 1: (1, {'@': 25})}, 21: {8: (0, 13), 18: (0, 4), 16: (0, 9), 0: (0, 19)}, 22: {6: (0, 21), 8: (0, 12), 9: (0, 1), 10: (0, 16), 11: (0, 11), 12: (0, 26), 13: (0, 30), 14: (0, 15), 15: (0, 10), 7: (0, 20), 16: (0, 9)}, 23: {6: (0, 21), 7: (0, 8), 9: (0, 1), 8: (0, 12), 10: (0, 16), 11: (0, 11), 12: (0, 26), 13: (0, 30), 14: (0, 15), 15: (0, 10), 16: (0, 9)}, 24: {1: (1, {'@': 26}), 2: (1, {'@': 26}), 0: (1, {'@': 26}), 3: (1, {'@': 26})}, 25: {1: (1, {'@': 27}), 2: (1, {'@': 27}), 0: (1, {'@': 27}), 3: (1, {'@': 27})}, 26: {6: (0, 21), 10: (0, 16), 12: (0, 26), 13: (0, 30), 14: (0, 15), 7: (0, 18), 8: (0, 12), 16: (0, 9), 9: (0, 1), 11: (0, 11), 15: (0, 10), 2: (0, 17)}, 27: {8: (0, 13), 18: (0, 0), 16: (0, 9)}, 28: {6: (0, 21), 10: (0, 16), 12: (0, 26), 13: (0, 30), 8: (0, 12), 16: (0, 9), 19: (0, 6), 9: (0, 1), 11: (0, 11), 7: (0, 31), 15: (0, 10), 14: (0, 15)}, 29: {1: (1, {'@': 28}), 2: (1, {'@': 28})}, 30: {1: (1, {'@': 29}), 2: (1, {'@': 29}), 0: (1, {'@': 29}), 3: (1, {'@': 29})}, 31: {3: (1, {'@': 30})}, 32: {18: (0, 5), 8: (0, 13), 16: (0, 9)}, 33: {1: (1, {'@': 31}), 2: (1, {'@': 31}), 0: (1, {'@': 31}), 3: (1, {'@': 31})}}, 'start_states': {'start': 28}, 'end_states': {'start': 6}}, 'lexer_conf': {'tokens': [{'@': 0}, {'@': 1}, {'@': 2}, {'@': 3}, {'@': 4}, {'@': 5}, {'@': 6}, {'@': 7}, {'@': 8}, {'@': 9}, {'@': 10}, {'@': 11}], 'ignore': ['WS'], 'g_regex_flags': 0, 'use_bytes': False, '__type__': 'LexerConf'}, 'start': ['start'], '__type__': 'LALR_ContextualLexer'}, 'rules': [{'@': 30}, {'@': 13}, {'@': 18}, {'@': 20}, {'@': 19}, {'@': 22}, {'@': 21}, {'@': 29}, {'@': 14}, {'@': 26}, {'@': 23}, {'@': 27}, {'@': 31}, {'@': 24}, {'@': 25}, {'@': 17}, {'@': 28}, {'@': 16}, {'@': 12}, {'@': 15}], 'options': {'debug': False, 'keep_all_tokens': False, 'tree_class': None, 'cache': False, 'postlex': None, 'parser': 'lalr', 'lexer': 'contextual', 'transformer': None, 'start': ['start'], 'priority': None, 'ambiguity': 'auto', 'regex': False, 'propagate_positions': False, 'lexer_callbacks': {}, 'maybe_placeholders': False, 'edit_terminals': None, 'g_regex_flags': 0, 'use_bytes': False}, '__type__': 'Lark'}
)
MEMO = (
{0: {'name': 'ESCAPED_STRING', 'pattern': {'value': '\\".*?(?<!\\\\)(\\\\\\\\)*?\\"', 'flags': [], '_width': [2, 4294967295], '__type__': 'PatternRE'}, 'priority': 1, '__type__': 'TerminalDef'}, 1: {'name': 'SIGNED_NUMBER', 'pattern': {'value': '(?:(?:\\+|\\-))?(?:(?:(?:[0-9])+(?:e|E)(?:(?:\\+|\\-))?(?:[0-9])+|(?:(?:[0-9])+\\.(?:(?:[0-9])+)?|\\.(?:[0-9])+)(?:(?:e|E)(?:(?:\\+|\\-))?(?:[0-9])+)?)|(?:[0-9])+)', 'flags': [], '_width': [1, 4294967295], '__type__': 'PatternRE'}, 'priority': 1, '__type__': 'TerminalDef'}, 2: {'name': 'WS', 'pattern': {'value': '(?:[ \t\x0c\r\n])+', 'flags': [], '_width': [1, 4294967295], '__type__': 'PatternRE'}, 'priority': 1, '__type__': 'TerminalDef'}, 3: {'name': 'TRUE', 'pattern': {'value': 'true', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 4: {'name': 'FALSE', 'pattern': {'value': 'false', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 5: {'name': 'NULL', 'pattern': {'value': 'null', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 6: {'name': 'COMMA', 'pattern': {'value': ',', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 7: {'name': 'LSQB', 'pattern': {'value': '[', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 8: {'name': 'RSQB', 'pattern': {'value': ']', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 9: {'name': 'LBRACE', 'pattern': {'value': '{', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 10: {'name': 'RBRACE', 'pattern': {'value': '}', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 11: {'name': 'COLON', 'pattern': {'value': ':', 'flags': [], '__type__': 'PatternStr'}, 'priority': 1, '__type__': 'TerminalDef'}, 12: {'origin': {'name': '__object_star_1', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'COMMA', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'pair', '__type__': 'NonTerminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 13: {'origin': {'name': 'value', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'object', '__type__': 'NonTerminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 14: {'origin': {'name': 'array', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'LSQB', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'value', '__type__': 'NonTerminal'}, {'name': '__array_star_0', '__type__': 'NonTerminal'}, {'name': 'RSQB', 'filter_out': True, '__type__': 'Terminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 15: {'origin': {'name': '__object_star_1', '__type__': 'NonTerminal'}, 'expansion': [{'name': '__object_star_1', '__type__': 'NonTerminal'}, {'name': 'COMMA', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'pair', '__type__': 'NonTerminal'}], 'order': 1, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 16: {'origin': {'name': '__array_star_0', '__type__': 'NonTerminal'}, 'expansion': [{'name': '__array_star_0', '__type__': 'NonTerminal'}, {'name': 'COMMA', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'value', '__type__': 'NonTerminal'}], 'order': 1, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 17: {'origin': {'name': 'string', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'ESCAPED_STRING', 'filter_out': False, '__type__': 'Terminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 18: {'origin': {'name': 'value', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'array', '__type__': 'NonTerminal'}], 'order': 1, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 19: {'origin': {'name': 'value', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'SIGNED_NUMBER', 'filter_out': False, '__type__': 'Terminal'}], 'order': 3, 'alias': 'number', 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 20: {'origin': {'name': 'value', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'string', '__type__': 'NonTerminal'}], 'order': 2, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 21: {'origin': {'name': 'value', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'FALSE', 'filter_out': True, '__type__': 'Terminal'}], 'order': 5, 'alias': 'false', 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 22: {'origin': {'name': 'value', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'TRUE', 'filter_out': True, '__type__': 'Terminal'}], 'order': 4, 'alias': 'true', 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 23: {'origin': {'name': 'array', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'LSQB', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'RSQB', 'filter_out': True, '__type__': 'Terminal'}], 'order': 2, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': [False, True, False], '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 24: {'origin': {'name': 'object', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'LBRACE', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'RBRACE', 'filter_out': True, '__type__': 'Terminal'}], 'order': 2, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': [False, True, False], '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 25: {'origin': {'name': 'pair', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'string', '__type__': 'NonTerminal'}, {'name': 'COLON', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'value', '__type__': 'NonTerminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 26: {'origin': {'name': 'array', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'LSQB', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'value', '__type__': 'NonTerminal'}, {'name': 'RSQB', 'filter_out': True, '__type__': 'Terminal'}], 'order': 1, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 27: {'origin': {'name': 'object', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'LBRACE', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'pair', '__type__': 'NonTerminal'}, {'name': '__object_star_1', '__type__': 'NonTerminal'}, {'name': 'RBRACE', 'filter_out': True, '__type__': 'Terminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 28: {'origin': {'name': '__array_star_0', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'COMMA', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'value', '__type__': 'NonTerminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 29: {'origin': {'name': 'value', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'NULL', 'filter_out': True, '__type__': 'Terminal'}], 'order': 6, 'alias': 'null', 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 30: {'origin': {'name': 'start', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'value', '__type__': 'NonTerminal'}], 'order': 0, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': True, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}, 31: {'origin': {'name': 'object', '__type__': 'NonTerminal'}, 'expansion': [{'name': 'LBRACE', 'filter_out': True, '__type__': 'Terminal'}, {'name': 'pair', '__type__': 'NonTerminal'}, {'name': 'RBRACE', 'filter_out': True, '__type__': 'Terminal'}], 'order': 1, 'alias': None, 'options': {'keep_all_tokens': False, 'expand1': False, 'priority': None, 'template_source': None, 'empty_indices': (), '__type__': 'RuleOptions'}, '__type__': 'Rule'}}
)
Shift = 0
Reduce = 1
def Lark_StandAlone(transformer=None, postlex=None):
  return Lark._load_from_dict(DATA, MEMO, transformer=transformer, postlex=postlex)