GIF89a=( õ' 7IAXKgNgYvYx\%wh…hŽth%ˆs%—x¨}9®Œ©€&©‰%¶†(¹–.¹5·œD¹&Çš)ÇŸ5ǘ;Í£*È¡&Õ²)ׯ7×µ<Ñ»4ï°3ø‘HÖ§KͯT÷¨Yÿšqÿ»qÿÔFØ !ù ' !ÿ NETSCAPE2.0 , =( þÀ“pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§gª«ªE¯°¨¬ª±²Œ¹º¹E¾­”´ÂB¶¯ §Åȸ»ÑD¾¿Á•ÄÅ®° ÝH¾ÒLÀÆDÙ«D¶BÝïðÀ¾DÑÑÔTÌÍíH òGö¨A RÎڐ |¥ ٭&ºìE8œ¹kGÔAÞpx­a¶­ã R2XB®åE8I€Õ6Xî:vT)äžþÀq¦è³¥ì仕F~%xñ  4#ZÔ‰O|-4Bs‘X:= QÉ œš lºÒyXJŠGȦ|s hÏíK–3l7·B|¥$'7Jީܪ‰‡àá”Dæn=Pƒ ¤Òëí‰`䌨ljóá¯Éüv>á–Á¼5 ½.69ûϸd«­ºÀûnlv©‹ªîf{¬ÜãPbŸ  l5‘Ž¯pß ´ ˜3aÅùäI«O’ý·‘áÞ‡˜¾Æ‚ÙÏiÇÿ‹Àƒ #öó)pâš Þ½ ‘Ý{ó)vmÞü%D~ 6f s}ŃƒDØW Eþ`‡þ À…L8xá†ç˜{)x`X/> Ì}mø‚–RØ‘*|`D=‚Ø_ ^ð5 !_…'aä“OÚ—7âcð`D”Cx`ÝÂ¥ä‹éY¹—F¼¤¥Š?¡Õ™ n@`} lď’ÄÉ@4>ñd œ à‘vÒxNÃ×™@žd=ˆgsžG±æ ´²æud &p8Qñ)ˆ«lXD©øÜéAžHìySun jª×k*D¤LH] †¦§C™Jä–´Xb~ʪwStŽ6K,°£qÁœ:9ت:¨þªl¨@¡`‚ûÚ ».Û¬¯t‹ÆSÉ[:°=Š‹„‘Nåû”Ìî{¿ÂA ‡Rà›ÀÙ6úë°Ÿð0Ä_ ½;ÃϱîÉì^ÇÛÇ#Ëë¼ôº!±Ä˜íUîÅÇ;0L1óÁµö«p% AÀºU̬ݵ¼á%霼€‡¯Á~`ÏG¯»À× ­²± =4ªnpð3¾¤³¯­ü¾¦îuÙuµÙ®|%2ÊIÿür¦#0·ÔJ``8È@S@5ê¢ ö×Þ^`8EÜ]ý.뜃Âç 7 ú ȉÞj œ½Dç zý¸iþœÑÙûÄë!ˆÞÀl§Ïw‹*DçI€nEX¯¬¼ &A¬Go¼QföõFç°¯;é¦÷îŽêJ°îúôF5¡ÌQ|îúöXªæ»TÁÏyñêï]ê² o óÎC=öõ›ÒÓPB@ D×½œä(>èCÂxŽ`±«Ÿ–JЀ»Û á¤±p+eE0`ëŽ`A Ú/NE€Ø†À9‚@¤à H½7”à‡%B‰`Àl*ƒó‘–‡8 2ñ%¸ —€:Ù1Á‰E¸àux%nP1ð!‘ðC)¾P81lÑɸF#ˆ€{´âé°ÈB„0>±û °b¡Š´±O‚3È–Ù()yRpbµ¨E.Z‘D8ÊH@% òŒx+%Ù˜Æcü »¸˜fõ¬b·d`Fê™8èXH"ÉÈ-±|1Ô6iI, 2““¬$+](A*jÐ QTÂo‰.ÛU슬Œã„Ž`¯SN¡–¶Äåyše¯ª’­¬‚´b¦Éož œ)åyâ@Ì®3 ÎtT̉°&Ø+žLÀf"Ø-|žçÔ>‡Ðv¦Ðžì\‚ Q1)Ž@Žh#aP72”ˆ™¨$‚ !ù " , =( …7IAXG]KgNgYvYxR"k\%w]'}hŽth%ˆg+ˆs%—r.—m3šx3˜x¨}9®€&©€+¨‡7§‰%¶†(¹–.¹œD¹&ǘ;Í•&ײ)×»4ïÌ6ò§KÍ þ@‘pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g «¬ E ±± ¨­¶°ººE Á´”·®C¬²§Ç¶Œ»ÓDÃÕƷ¯Ê±H½ºM×ÁGÚ¬D¶BËÁ½î½DÓôTÏÛßîG»ôõC×CÌ l&âž:'òtU³6ɹ#·Ø)€'Ü.6±&ëÍÈ» K(8p0N?!æ2"ÛˆNIJX>R¼ÐO‚M '¡¨2¸*Ÿþ>#n↠å@‚<[:¡Iïf’ ¤TÚ˘CdbÜÙ“[«ŽEú5MBo¤×@€`@„€Êt W-3 ¶Ÿ¡BíêäjIÝ…Eò9[T…$íêﯧ„…•s»Óȳ¹€ÅÚdc®UUρ#±Ùïldj?´í¼²`\ŽÁðÞu|3'ÖŒ]ë6 ¶S#²‡˜FKLÈ *N E´‘áäŠ$˜›eÄYD„ºq«.è촁ƒs \-ÔjA 9²õ÷å- üúM[Âx(ís÷ì®x€|í¡Ù’p¦‚ ŽkÛTÇDpE@WÜ ²Ç]kŠ1¨ þ€·Yb ÓÁ‰l°*n0 ç™—žzBdОu¾7ĉBl€â‰-ºx~|UåU‰  h*Hœ|e"#"?vpÄiŠe6^ˆ„+qâŠm8 #VÇá ‘å–ÄV„œ|Šè•m"сœn|@›U¶ÆΞ—Špb¥G¨ED”€±Úê2FÌIç? >Éxå Œ± ¡¤„%‘žjŸ‘ꄯ<Ìaà9ijÐ2˜D¦È&›†Z`‚å]wþ¼Â:ç6àB¤7eFJ|õÒ§Õ,¨äàFÇ®cS·Ê¶+B°,‘Þ˜ºNûãØ>PADÌHD¹æž«ÄÀnÌ¥}­#Ë’ë QÀÉSÌÂÇ2ÌXÀ{æk²lQÁ2«ÊðÀ¯w|2Í h‹ÄÂG€,m¾¶ë3ÐÙ6-´ÅE¬L°ÆIij*K½ÀÇqï`DwVÍQXœÚÔpeœ±¬Ñ q˜§Tœ½µƒ°Œìu Â<¶aØ*At¯lmEØ ü ôÛN[P1ÔÛ¦­±$ÜÆ@`ùåDpy¶yXvCAyåB`ŽD¶ 0QwG#¯ æš[^Äþ $ÀÓÝǦ{„L™[±úKÄgÌ;ï£S~¹ìGX.ôgoT.»åˆ°ùŸûù¡?1zö¦Ÿž:ÅgÁ|ìL¹ „®£œŠ‚à0œ]PÁ^p F<"•ç?!,ñ‡N4—…PÄ Á„ö¨Û:Tè@hÀ‹%táÿ:ø-žI<`þ‹p I….)^ 40D#p@ƒj4–؀:²‰1Øâr˜¼F2oW¼#Z†;$Q q” ‘ ÂK¦ñNl#29 !’F@¥Bh·ᏀL!—XFóLH‘Kh¤.«hE&JòG¨¥<™WN!€ÑÙÚˆY„@†>Œž19J" 2,/ &.GXB%ÌRÈ9B6¹W]’î×ÔW¥’IÎ$ ñ‹ÓŒE8YÆ ¼³™ñA5“à®Q.aŸB€&Ø©³ JÁ—! ¦t)K%tœ-¦JF bòNMxLôþ)ÐR¸Ð™‘ èÝ6‘O!THÌ„HÛ ‰ !ù ) , =( …AXKgNgYvYxR"k\%wh…hŽh%ˆg+ˆs%—r.—x3˜x¨}9®€&©€+¨Œ,©‡7§‰%¶†(¹–.¹5·&Çš)ǘ;Í•&×£*Ȳ)ׯ7×»4ï°3øÌ6ò‘HÖ§KÍ»Hó¯T÷¨Yÿ»qÿÇhÿ þÀ”pH,È¤rÉl:ŸÐ¨tJ­Z¯Ø¬vËíz¿à°xL.›Ïè´zÍn»ßð¸|N¯Ûïø¼~Ïïûÿ€‚ƒ„…†‡ˆ‰Š‹ŒŽ‘’“”•–—˜™š›œžŸ ¡¢£¤¥¦§g ª« E$±²¨ª­ · °²½$E$ÂÕ««D· Í ¿¦Ç¶¸ÌŒ¾³CÃÅÆ E ééH½MÛÂGâªD­ çBêêϾD²ÒaÀà€Š1r­ðÓ¤ ÔožzU!L˜C'¾yW½UGtäÇïÙllê0×àÂuGþ)AÀs[þ·xì ÁxO%ƒûX2ó—  P£n›R/¡ÑšHše+êDm?# —‘Ç£6¡8íJ¡ŸâDiäªM¥Ö„ôj“¬¹£5oQ7°- <‡ *´lãÓŒ2r/a!l)dÈ A™ÈE¢ôÔ͆…ð ;Ö˜c ¡%ß‚’Ùˆâ¸b½—pe~C"BíëÚHïeF2§æŠ8qb t_`urŠeü wÅu3êæPv§h•"ß`íÍxçLĹÜÖ3á  ~Öº“®›¸ÏMDfJÙ °„ÛµáWõ%§œ‚à©–‚X Ó؁)@®Ñ›Eþ´wëuÅSxb8y\mÖzœ¥§ZbºE—ÂLªÌw!y(>¡™wú=Ç|ÅÝs¢d €CÁW)HÜcC$€L Ä7„r.á\{)@ð` @ äXÈ$PD” `šaG:§æˆOˆ72EÐamn]ù"ŒcÊxÑŒ° &dR8`g«iÙŸLR!¦P …d’ä¡“¦ðÎTƒ¦ià|À _ ¥ Qi#¦Šg›Æ ›noMµ ›V ã£)p ç£ÎW…š=Âeªk§†j„ ´®1ß²sÉxéW«jšl|0¯B0Û, \jÛ´›6±¬¶C ÛíWþï|ëÙ‹¸ñzĸV {ì;Ýñn¼òVˆm³I¼³.Ðã¤PN¥ ²µ¼„µCã+¹ÍByî£Ñ¾HŸ›ëê 7ìYÆFTk¨SaoaY$Dµœìï¿Ã29RÈkt Çïfñ ÇÒ:ÀÐSp¹3ÇI¨â¥DZÄ ü9Ïýögñ½­uÔ*3)O‘˜Ö[_hv ,àî×Et Ÿé¶BH€ Õ[ü±64M@ÔSÌM7dÐl5-ÄÙU܍´©zߌ3Ô€3ž„ „ ¶ÛPô½5×g› êÚ˜kN„Ý…0Îj4€Ìë°“#{þÕ3S2çKÜ'ợlø¼Ú2K{° {Û¶?žm𸧠ËI¼nEò='êüóºè^üæÃ_Û=°óž‚ì#Oý¿Í'¡½áo..ÏYìnüñCœO±Áa¿¢Kô½o,üÄËbö²çºíï{ËC Ú— "”Ï{ËK ÍÒw„õ±Oz dÕ¨à:$ ƒô—«v»] A#ð «€¿šéz)Rx׿ˆ¥‚d``èw-îyÏf×K!ð€þ­Ð|ìPľ„=Ì`ý(f” 'Pa ¥ÐBJa%Ðâf§„%Š¡}FàáÝ×6>ÉäŠG"éŽè=ø!oŠ°^FP¼Ø©Q„ÀCÙÁ`(Ž\ÄÝ® ©Â$<n@dÄ E#ììUÒI! ‚#lù‹`k¦ÐÇ'Rró’ZýNBÈMF Í[¤+‹ðɈ-áwj¨¥þ8¾rá ,VÂh„"|½œ=×G_¦Ñ™EØ 0i*%̲˜Æda0mV‚k¾)›;„&6 p>ÓjK “¦Ç# âDÂ:ûc?:R Ó¬fÞéI-Ì“•Ã<ä=™Ï7˜3œ¨˜c2ŒW ,ˆ”8(T™P‰F¡Jhç"‚ ; 403WebShell
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Current File : /opt/cloudlinux/venv/lib64/python3.11/site-packages/guppy/heapy/Path.py
import functools

from guppy.etc.Descriptor import property_nondata


class R_NORELATION:
    code = -1
    r = None

    def stra(self, a, safe=True):
        return '%s.??' % a


class R_IDENTITY:
    code = 0

    def stra(self, a, safe=True):
        return a


class R_ATTRIBUTE:
    code = 1
    strpat = '%s.%s'


class R_INDEXVAL:
    code = 2

    def stra(self, a, safe=True):
        if safe:
            return '%s[%s]' % (a, self.saferepr(self.r))
        else:
            return '%s[%r]' % (a, self.r)


class R_INDEXKEY:
    code = 3
    strpat = '%s.keys()[%r]'


class R_INTERATTR:
    code = 4
    strpat = '%s->%s'


class R_HASATTR:
    code = 5
    strpat = '%s.__dict__.keys()[%r]'


class R_LOCAL_VAR:
    code = 6
    strpat = '%s.f_locals[%r]'


class R_CELL:
    code = 7
    strpat = '%s.f_locals [%r]'


class R_STACK:
    code = 8
    strpat = '%s->f_valuestack[%d]'


class R_INSET:
    code = 9
    strpat = 'list(%s)[%d]'


class R_RELSRC:
    code = 10

    def stra(self, a, safe=True):
        return self.r % (a,)


class R_LIMIT:
    code = 11


@functools.total_ordering
class RelationBase(object):
    __slots__ = 'r', 'isinverted'

    def __init__(self, r, isinverted=0):
        self.r = r
        self.isinverted = isinverted

    def __lt__(self, other):
        if not isinstance(other, RelationBase):
            return id(type(self)) < id(type(other))
        if self.code != other.code:
            return self.code < other.code
        if type(self.r) is not type(other.r):
            return id(type(self.r)) < id(type(other.r))
        try:
            return self.r < other.r
        except TypeError:
            return id(self.r) < id(other.r)

    def __eq__(self, other):
        if isinstance(other, RelationBase):
            if self.code != other.code:
                return False
            return self.r == other.r
        else:
            return False

    def __str__(self):
        return self.stra('%s')

    def inverted(self):
        return self.__class__(self.r, not self.isinverted)

    def stra(self, a, safe=True):
        return self.strpat % (a, self.r)


class MultiRelation(RelationBase):
    def __init__(self, rels):
        self.rels = rels

    def stra(self, a, safe=True):
        return '<'+','.join([x.stra(a, safe=safe) for x in self.rels])+'>'


@functools.total_ordering
class Path:
    def __init__(self, mod, path, index, srcname):
        self.mod = mod
        self.path = path[1:]
        self.index = index
        self.src = path[1]
        self.tgt = path[-1]
        self.strprefix = '%s'
        if srcname == '_str_of_src_':
            srcname = self.src.brief
        if callable(srcname):
            srcname = srcname(self)
        self.srcname = srcname

    def __lt__(self, other):
        return str(self) < str(other)

    def __eq__(self, other):
        return str(self) == str(other)

    def __len__(self):
        return int((len(self.path) - 1) / 2)

    def stra(self, safe=True):
        if self.path:
            s = self.strprefix
            for i in range(1, len(self.path), 2):
                r = self.path[i]
                s = r.stra(s, safe=safe)
        else:
            s = '<Empty Path>'
        return s

    def __str__(self):
        return self.stra()

    def __repr__(self):
        return repr(str(self))

    def _get_line_iter(self):
        yield '%2d: %s' % (self.index, str(self) % self.srcname)

    def types(self):
        return [type(x) for x in self.path]


class PathsIter:
    def __init__(self, paths, start=None, stop=None):
        self.paths = paths
        self.mod = paths.mod
        self.stop = stop
        self.reset(start)

    def __iter__(self):
        return self

    def reset(self, idx=None):
        if idx is None:
            idx = 0
        if idx != 0:  # Optimization: don't calculate numpaths in common case.
            ln = self.paths.numpaths
            if idx < 0:
                idx = ln + idx
            if not (0 <= idx < ln):
                self.isatend = 1
                return
        Src = self.paths.Src
        sr = [('%s', src.by(Src.er)) for src in Src.byid.parts]
        srs = []
        idxs = []
        np = 0
        while sr:
            if idx == 0:
                i, (rel, src) = 0, sr[0]
            else:
                for i, (rel, src) in enumerate(sr):
                    npnext = np + self.paths.numpaths_from(src)
                    if idx < npnext:
                        break
                    np = npnext
                else:
                    assert 0
            idxs.append(i)
            srs.append(sr)
            sr = self.mod.sortedrels(self.paths.IG, src)
        self.pos = idx
        self.idxs = idxs
        self.srs = srs
        self.isatend = not idxs

    def __next__(self):
        paths = self.paths
        if (self.isatend or
                self.stop is not None and self.pos >= self.stop):
            raise StopIteration
        path = []
        for row, col in enumerate(self.idxs):
            sr = self.srs[row]
            if sr is None:
                sr = self.mod.sortedrels(paths.IG, path[-1])
                self.srs[row] = sr
            rel, dst = sr[col]
            path.append(rel)
            path.append(dst)
        rp = self.mod.Path(paths, path, self.pos, paths.srcname)
        self.pos += 1
        while row >= 0:
            self.idxs[row] += 1
            if self.idxs[row] < len(self.srs[row]):
                break
            if row > 0:
                self.srs[row] = None
            self.idxs[row] = 0
            row -= 1
        else:
            self.isatend = 1
            self.pos = 0
        return rp


class ShortestPaths:
    def __init__(self, sg, Dst):
        self.sg = sg
        self.Dst = Dst
        self.mod = mod = sg.mod
        self._hiding_tag_ = mod._hiding_tag_
        self.srcname = sg.srcname
        self.top = self

        self.IG = IG = mod.nodegraph()
        Edges = []
        Y = Dst.nodes
        while Y:
            R = sg.G.domain_restricted(Y)
            R.invert()
            IG.update(R)
            Edges.append(R)
            Y = R.get_domain()
        if Edges:
            Edges.pop()
            Edges.reverse()
            self.Src = mod.idset(Edges[0].get_domain())
        else:
            self.Src = mod.iso()

        self.edges = tuple(Edges)
        sets = []
        for i, e in enumerate(Edges):
            if i == 0:
                sets.append(mod.idset(e.get_domain()))
            sets.append(mod.idset(e.get_range()))
        self.sets = tuple(sets)

        mod.OutputHandling.setup_printing(self)

        self.maxpaths = 10

    def __getitem__(self, idx):
        try:
            return next(self.iter(start=idx))
        except StopIteration:
            raise IndexError

    def __iter__(self):
        return self.iter()

    def iter(self, start=0, stop=None):
        return PathsIter(self, start, stop)

    def aslist(self):
        return list(self)

    def copy_but_avoid_edges_at_levels(self, *args):
        avoid = self.edges_at(*args).updated(self.sg.AvoidEdges)
        assert avoid._hiding_tag_ is self.mod._hiding_tag_
        return self.mod.shpaths(self.Dst, self.Src, avoid_edges=avoid)
        # return self.mod.shpaths(self.dst, self.src, avoid_edges=avoid)

    avoided = copy_but_avoid_edges_at_levels

    # The builtin __len__ doesn't always work due to builtin Python restriction to int result:
    # so we don't provide it at all to avoid unsuspected errors sometimes.
    # Use .numpaths attribute instead.
    #   def __len__(self):
    #      return self.numpaths

    def depth(self):
        pass

    def edges_at(self, *args):
        E = self.mod.nodegraph()
        for col in args:
            E.update(self.edges[col])
        assert E._hiding_tag_ == self.mod._parent.View._hiding_tag_
        return E

    def numpaths_from(self, Src):
        try:
            NP = self.NP
        except AttributeError:
            NP = self.mod.nodegraph(is_mapping=True)
            NP.add_edges_n1(self.IG.get_domain(), None)
            for dst in self.Dst.nodes:
                NP.add_edge(dst, 1)
            self.NP = NP
        numedges = self.mod.hv.numedges
        IG = self.IG

        def np(y):
            n = NP[y]
            if n is None:
                n = 0
                for z in IG[y]:
                    sn = NP[z]
                    if sn is None:
                        sn = np(z)
                    n += sn * numedges(y, z)
                NP[y] = n
            return n
        num = 0
        for src in Src.nodes:
            num += np(src)
        return num

    def _get_numpaths(self):
        num = self.numpaths_from(self.Src)
        self.numpaths = num
        return num

    numpaths = property_nondata(fget=_get_numpaths)

    @property
    def maxpaths(self):
        return self.printer.max_more_lines

    @maxpaths.setter
    def maxpaths(self, value):
        self.printer.max_more_lines = value

    def _oh_get_num_lines(self):
        return self.numpaths

    def _oh_get_line_iter(self):
        for el in self:
            yield from el._get_line_iter()

    def _oh_get_more_msg(self, start_lineno, end_lineno):
        nummore = self.numpaths-(end_lineno+1)
        return '<... %d more paths ...>' % nummore

    def _oh_get_empty_msg(self):
        if self.numpaths:
            return '<No more paths>'
        return None


class ShortestGraph:
    def __init__(self, mod, G, DstSets, Src, AvoidEdges,
                 srcname=None, dstname=None):
        self.mod = mod
        self.G = G
        self.Src = Src
        self.DstSets = DstSets
        self.AvoidEdges = AvoidEdges
        if srcname is None:
            if Src.count == 1:
                srcname = mod.srcname_1
            else:
                srcname = mod.srcname_n
        self.srcname = srcname
        if dstname is None:
            dstname = mod.dstname
        self.dstname = dstname

    def __getitem__(self, idx):
        return self.mod.ShortestPaths(self, self.DstSets[idx])

    def __len__(self):
        return len(self.DstSets)

    def __repr__(self):
        lst = []
        for i, p in enumerate(self):
            lst.append('--- %s[%d] ---' % (self.dstname, i))
            lst.append(str(p))

        return '\n'.join(lst)


class _GLUECLAMP_:
    _preload_ = ('_hiding_tag_',)
    _chgable_ = ('output', 'srcname_1', 'srcname_n')

    srcname_1 = 'Src'
    srcname_n = '_str_of_src_'
    dstname = 'Dst'

    _imports_ = (
        '_parent.ImpSet:mutnodeset',
        '_parent:OutputHandling',
        '_parent.Use:idset',
        '_parent.Use:iso',
        '_parent.Use:Nothing',
        '_parent.Use:reprefix',
        '_parent.UniSet:idset_adapt',
        '_parent.View:hv',
        '_parent.View:nodegraph',
        '_parent:View',  # NOT View.root, since it may change
    )

    def _get_rel_table(self):
        table = {}
        for name in dir(self._module):
            if name.startswith('R_'):
                c = getattr(self, name)

                class r(c, self.RelationBase):
                    repr = self.saferepr
                    saferepr = self.saferepr
                r.__qualname__ = r.__name__ = 'Based_'+name
                table[c.code] = r
        return table

    def _get__hiding_tag_(self): return self._parent.View._hiding_tag_
    def _get_identity(self): return self.rel_table[R_IDENTITY.code]('')
    def _get_norelation(self): return self.rel_table[R_NORELATION.code]('')
    def _get_saferepr(self): return self._root.reprlib.repr
    def _get_shpathstep(self): return self.hv.shpathstep

    def sortedrels(self, IG, Src):
        t = []
        iso = self.iso
        for src in Src.nodes:
            for dst in IG[src]:
                Dst = iso(dst)
                for rel in self.relations(src, dst):
                    t.append((rel, Dst))
        t.sort(key=lambda x: x[0])
        return t

    def prunedinverted(self, G, Y):
        IG = self.nodegraph()
        while Y:
            R = G.domain_restricted(Y)
            R.invert()
            IG.update(R)
            Y = R.get_domain()
        return IG

    def relation(self, src, dst):
        tab = self.relations(src, dst)
        if len(tab) > 1:
            r = MultiRelation(tab)
        elif not tab:
            r = self.norelation
        else:
            r = tab[0]
        return r

    def relations(self, src, dst):
        tab = []
        if src is dst:
            tab.append(self.identity)
        rawrel = self.hv.relate(src, dst)
        for i, rs in enumerate(rawrel):
            for r in rs:
                tab.append(self.rel_table[i](r))
        if not tab:
            tab = [self.norelation]
        return tab

    def shpaths(self, dst, src=None, avoid_nodes=None, avoid_edges=()):
        return self.shpgraph([dst], src, avoid_nodes, avoid_edges)[0]

    def shpgraph(self, DstSets, src=None, avoid_nodes=None, avoid_edges=(),
                 srcname=None, dstname=None):
        if src is None:
            Src = self.iso(self.View.root)
            if srcname is None and self.View.root is self.View.heapyc.RootState:
                srcname = '%sRoot' % self.reprefix
        else:
            Src = self.idset_adapt(src)
        if avoid_nodes is None:
            AvoidNodes = self.Nothing
        else:
            AvoidNodes = self.idset_adapt(avoid_nodes)
        AvoidEdges = self.nodegraph(avoid_edges)
        G, DstSets = self.shpgraph_algorithm(
            DstSets, Src, AvoidNodes, AvoidEdges)

        return self.ShortestGraph(self, G, DstSets, Src, AvoidEdges,
                                  srcname, dstname)

    def shpgraph_algorithm(self, DstSets, Src, AvoidNodes, AvoidEdges):
        U = (Src - AvoidNodes).nodes
        S = self.mutnodeset(AvoidNodes.nodes)
        G = self.nodegraph()
        unseen = list(enumerate(DstSets))
        DstSets = [self.Nothing]*len(DstSets)
        while U and unseen:
            S |= U
            U = self.shpathstep(G, U, S, AvoidEdges)
            unseen_ = []
            for i, D in unseen:
                D_ = D & U
                if D_:
                    DstSets[i] = D_
                else:
                    unseen_.append((i, D))
            unseen = unseen_
        return G, [self.idset_adapt(D) for D in DstSets]


class _Specification_:
    class GlueTypeExpr:
        exec("""\
shpgraph        <in>    callable
""".replace('<in>', ' = lambda IN : '))

Youez - 2016 - github.com/yon3zu
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