Ignore:
Timestamp:
Jun 29, 2015, 1:46:55 PM (4 years ago)
Author:
nmedfort
Message:

Preliminary changes to inclusion of UCD Compiler into the RE Compiler.

Location:
icGREP/icgrep-devel/icgrep/re
Files:
3 edited

Legend:

Unmodified
Added
Removed
  • icGREP/icgrep-devel/icgrep/re/re_compiler.cpp

    r4609 r4622  
    2121#include <cc/cc_namemap.hpp>
    2222#include <pablo/codegenstate.h>
     23#include <UCD/ucd_compiler.hpp>
    2324
    2425#include <assert.h>
     
    4647
    4748
    48 RE_Compiler::RE_Compiler(PabloBlock & baseCG)
    49 : mPB(baseCG)
     49RE_Compiler::RE_Compiler(cc::CC_Compiler & ccCompiler)
     50: mCCCompiler(ccCompiler)
     51, mPB(ccCompiler.getBuilder().getPabloBlock(), ccCompiler.getBuilder())
    5052, mLineFeed(nullptr)
    5153, mInitial(nullptr)
     
    5860
    5961   
    60 MarkerType RE_Compiler::AdvanceMarker(MarkerType m, MarkerPosition newpos, PabloBlock & pb) {
     62MarkerType RE_Compiler::AdvanceMarker(MarkerType m, MarkerPosition newpos, PabloBuilder & pb) {
    6163    if (m.pos == newpos) return m;
    6264    PabloAST * a = m.stream;
     
    7375}
    7476
    75 void RE_Compiler::AlignMarkers(MarkerType & m1, MarkerType & m2, PabloBlock & pb) {
     77void RE_Compiler::AlignMarkers(MarkerType & m1, MarkerType & m2, PabloBuilder & pb) {
    7678    if (m1.pos < m2.pos) {
    7779        m1 = AdvanceMarker(m1, m2.pos, pb);
     
    8587
    8688
    87 void RE_Compiler::initializeRequiredStreams(cc::CC_Compiler & ccc) {
    88 
    89     Assign * LF = mPB.createAssign("LF", ccc.compileCC(makeCC(0x0A)));
     89void RE_Compiler::initializeRequiredStreams() {
     90
     91    Assign * LF = mPB.createAssign("LF", mCCCompiler.compileCC(makeCC(0x0A)));
    9092    mLineFeed = LF;
    91     PabloAST * CR = ccc.compileCC(makeCC(0x0D));
    92     PabloAST * LF_VT_FF_CR = ccc.compileCC(makeCC(0x0A, 0x0D));
    93 
    94     PabloBlock & crb = PabloBlock::Create(mPB);
     93    PabloAST * CR = mCCCompiler.compileCC(makeCC(0x0D));
     94    PabloAST * LF_VT_FF_CR = mCCCompiler.compileCC(makeCC(0x0A, 0x0D));
     95
     96    PabloBuilder crb = PabloBuilder::Create(mPB);
    9597    PabloAST * cr1 = crb.createAdvance(CR, 1, "cr1");
    9698    Assign * acrlf = crb.createAssign("crlf", crb.createAnd(cr1, LF));
     
    98100    mCRLF = acrlf;
    99101
    100     PabloAST * u8pfx = ccc.compileCC(makeCC(0xC0, 0xFF));
    101     PabloBlock & it = PabloBlock::Create(mPB);
    102     PabloAST * u8pfx2 = ccc.compileCC(makeCC(0xC2, 0xDF), it);
    103     PabloAST * u8pfx3 = ccc.compileCC(makeCC(0xE0, 0xEF), it);
    104     PabloAST * u8pfx4 = ccc.compileCC(makeCC(0xF0, 0xF4), it);
    105     Assign * u8suffix = it.createAssign("u8suffix", ccc.compileCC(makeCC(0x80, 0xBF)));
     102    PabloAST * u8pfx = mCCCompiler.compileCC(makeCC(0xC0, 0xFF));
     103    PabloBuilder it = PabloBuilder::Create(mPB);
     104    PabloAST * u8pfx2 = mCCCompiler.compileCC(makeCC(0xC2, 0xDF), it);
     105    PabloAST * u8pfx3 = mCCCompiler.compileCC(makeCC(0xE0, 0xEF), it);
     106    PabloAST * u8pfx4 = mCCCompiler.compileCC(makeCC(0xF0, 0xF4), it);
     107    Assign * u8suffix = it.createAssign("u8suffix", mCCCompiler.compileCC(makeCC(0x80, 0xBF)));
    106108   
    107109    //
    108110    // Two-byte sequences
    109     PabloBlock & it2 = PabloBlock::Create(it);
     111    PabloBuilder it2 = PabloBuilder::Create(it);
    110112    Assign * u8scope22 = it2.createAssign("u8scope22", it2.createAdvance(u8pfx2, 1));
    111     Assign * NEL = it2.createAssign("NEL", it2.createAnd(it2.createAdvance(ccc.compileCC(makeCC(0xC2), it2), 1), ccc.compileCC(makeCC(0x85), it2)));
     113    Assign * NEL = it2.createAssign("NEL", it2.createAnd(it2.createAdvance(mCCCompiler.compileCC(makeCC(0xC2), it2), 1), mCCCompiler.compileCC(makeCC(0x85), it2)));
    112114    it.createIf(u8pfx2, {u8scope22, NEL}, it2);
    113115   
    114116    //
    115117    // Three-byte sequences
    116     PabloBlock & it3 = PabloBlock::Create(it);
     118    PabloBuilder it3 = PabloBuilder::Create(it);
    117119    Assign * u8scope32 = it3.createAssign("u8scope32", it3.createAdvance(u8pfx3, 1));
    118120    PabloAST * u8scope33 = it3.createAdvance(u8pfx3, 2);
    119121    Assign * u8scope3X = it3.createAssign("u8scope3X", it3.createOr(u8scope32, u8scope33));
    120     PabloAST * E2_80 = it3.createAnd(it3.createAdvance(ccc.compileCC(makeCC(0xE2), it3), 1), ccc.compileCC(makeCC(0x80), it3));
    121     Assign * LS_PS = it3.createAssign("LS_PS", it3.createAnd(it3.createAdvance(E2_80, 1), ccc.compileCC(makeCC(0xA8,0xA9), it3)));
    122     PabloAST * E0_invalid = it3.createAnd(it3.createAdvance(ccc.compileCC(makeCC(0xE0), it3), 1), ccc.compileCC(makeCC(0x80, 0x9F), it3));
    123     PabloAST * ED_invalid = it3.createAnd(it3.createAdvance(ccc.compileCC(makeCC(0xED), it3), 1), ccc.compileCC(makeCC(0xA0, 0xBF), it3));
     122    PabloAST * E2_80 = it3.createAnd(it3.createAdvance(mCCCompiler.compileCC(makeCC(0xE2), it3), 1), mCCCompiler.compileCC(makeCC(0x80), it3));
     123    Assign * LS_PS = it3.createAssign("LS_PS", it3.createAnd(it3.createAdvance(E2_80, 1), mCCCompiler.compileCC(makeCC(0xA8,0xA9), it3)));
     124    PabloAST * E0_invalid = it3.createAnd(it3.createAdvance(mCCCompiler.compileCC(makeCC(0xE0), it3), 1), mCCCompiler.compileCC(makeCC(0x80, 0x9F), it3));
     125    PabloAST * ED_invalid = it3.createAnd(it3.createAdvance(mCCCompiler.compileCC(makeCC(0xED), it3), 1), mCCCompiler.compileCC(makeCC(0xA0, 0xBF), it3));
    124126    Assign * EX_invalid = it3.createAssign("EX_invalid", it3.createOr(E0_invalid, ED_invalid));
    125127    it.createIf(u8pfx3, {u8scope32, u8scope3X, LS_PS, EX_invalid}, it3);
     
    127129    //
    128130    // Four-byte sequences
    129     PabloBlock & it4 = PabloBlock::Create(it);
     131    PabloBuilder it4 = PabloBuilder::Create(it);
    130132    PabloAST * u8scope42 = it4.createAdvance(u8pfx4, 1, "u8scope42");
    131133    PabloAST * u8scope43 = it4.createAdvance(u8scope42, 1, "u8scope43");
     
    133135    Assign * u8scope4nonfinal = it4.createAssign("u8scope4nonfinal", it4.createOr(u8scope42, u8scope43));
    134136    Assign * u8scope4X = it4.createAssign("u8scope4X", it4.createOr(u8scope4nonfinal, u8scope44));
    135     PabloAST * F0_invalid = it4.createAnd(it4.createAdvance(ccc.compileCC(makeCC(0xF0), it4), 1), ccc.compileCC(makeCC(0x80, 0x8F), it4));
    136     PabloAST * F4_invalid = it4.createAnd(it4.createAdvance(ccc.compileCC(makeCC(0xF4), it4), 1), ccc.compileCC(makeCC(0x90, 0xBF), it4));
     137    PabloAST * F0_invalid = it4.createAnd(it4.createAdvance(mCCCompiler.compileCC(makeCC(0xF0), it4), 1), mCCCompiler.compileCC(makeCC(0x80, 0x8F), it4));
     138    PabloAST * F4_invalid = it4.createAnd(it4.createAdvance(mCCCompiler.compileCC(makeCC(0xF4), it4), 1), mCCCompiler.compileCC(makeCC(0x90, 0xBF), it4));
    137139    Assign * FX_invalid = it4.createAssign("FX_invalid", it4.createOr(F0_invalid, F4_invalid));
    138140    it.createIf(u8pfx4, {u8scope4nonfinal, u8scope4X, FX_invalid}, it4);
     
    160162   
    161163    PabloAST * LB_chars = mPB.createOr(LF_VT_FF_CR, NEL_LS_PS);
    162     PabloAST * u8single = mPB.createAnd(ccc.compileCC(makeCC(0x00, 0x7F)), mPB.createNot(u8invalid));
     164    PabloAST * u8single = mPB.createAnd(mCCCompiler.compileCC(makeCC(0x00, 0x7F)), mPB.createNot(u8invalid));
    163165    mInitial = mPB.createOr(u8single, valid_pfx, "initial");
    164166    mFinal = mPB.createNot(mPB.createOr(mNonFinal, u8invalid), "final");
     
    174176}
    175177
    176 MarkerType RE_Compiler::compile(RE * re, PabloBlock & pb) {
     178MarkerType RE_Compiler::compile(RE * re, PabloBuilder & pb) {
    177179    return process(re, makeMarker(FinalPostPositionByte, pb.createOnes()), pb);
    178180}
    179181
    180 PabloAST * RE_Compiler::nextUnicodePosition(MarkerType m, PabloBlock & pb) {
     182PabloAST * RE_Compiler::nextUnicodePosition(MarkerType m, PabloBuilder & pb) {
    181183    if (markerPos(m) == FinalPostPositionByte) {
    182184        return markerVar(m);
     
    190192}
    191193
    192 MarkerType RE_Compiler::process(RE * re, MarkerType marker, PabloBlock & pb) {
     194MarkerType RE_Compiler::process(RE * re, MarkerType marker, PabloBuilder & pb) {
    193195    if (Name * name = dyn_cast<Name>(re)) {
    194196        return process(name, marker, pb);
     
    240242}
    241243
    242 MarkerType RE_Compiler::process(Name * name, MarkerType marker, PabloBlock & pb) {
     244MarkerType RE_Compiler::process(Name * name, MarkerType marker, PabloBuilder & pb) {
    243245    MarkerType nextPos;
    244246    if (markerPos(marker) == FinalPostPositionByte) nextPos = marker;
     
    249251        nextPos = AdvanceMarker(marker, FinalPostPositionByte, pb);
    250252    }
    251     return makeMarker(FinalMatchByte, pb.createAnd(markerVar(nextPos), getNamedCharacterClassStream(name), "m"));
    252 }
    253 
    254 PabloAST * RE_Compiler::getNamedCharacterClassStream(Name * name) {
     253    return makeMarker(FinalMatchByte, pb.createAnd(markerVar(nextPos), getNamedCharacterClassStream(name, pb), "m"));
     254}
     255
     256PabloAST * RE_Compiler::getNamedCharacterClassStream(Name * name, PabloBuilder & pb) {
    255257    PabloAST * var = name->getCompiled();
    256258    if (LLVM_LIKELY(var != nullptr)) {
     
    258260    }
    259261    else if (name->getDefinition() != nullptr) {
    260         MarkerType m = compile(name->getDefinition(), mPB);
     262        MarkerType m = compile(name->getDefinition(), pb);
    261263        assert(markerPos(m) == FinalMatchByte);
    262264        var = markerVar(m);
     
    264266    else if (name->getType() == Name::Type::UnicodeProperty) {
    265267        var = mPB.createCall(name->getName());
     268        // UCD::UCDCompiler ucdCompiler(mCCCompiler);
    266269    }
    267270    else {
     
    269272    }
    270273
    271     var = mPB.createAnd(var, mPB.createNot(UNICODE_LINE_BREAK ? mUnicodeLineBreak : mLineFeed));
     274    var = pb.createAnd(var, pb.createNot(UNICODE_LINE_BREAK ? mUnicodeLineBreak : mLineFeed));
    272275    name->setCompiled(var);
    273276    return var;
     
    275278
    276279
    277 MarkerType RE_Compiler::process(Seq * seq, MarkerType marker, PabloBlock & pb) {
     280MarkerType RE_Compiler::process(Seq * seq, MarkerType marker, PabloBuilder & pb) {
    278281    // if-hierarchies are not inserted within unbounded repetitions
    279282    if (mStarDepth > 0) {
     
    288291}
    289292
    290 MarkerType RE_Compiler::processSeqTail(Seq::iterator current, Seq::iterator end, int matchLenSoFar, MarkerType marker, PabloBlock & pb) {
     293MarkerType RE_Compiler::processSeqTail(Seq::iterator current, Seq::iterator end, int matchLenSoFar, MarkerType marker, PabloBuilder & pb) {
    291294    if (current == end) return marker;
    292295    if (matchLenSoFar < IfInsertionGap) {
     
    297300    }
    298301    else {
    299         PabloBlock & nested = PabloBlock::Create(pb);
     302        PabloBuilder nested = PabloBuilder::Create(pb);
    300303        MarkerType m1 = processSeqTail(current, end, 0, marker, nested);
    301304        Assign * m1a = nested.createAssign("m", markerVar(m1));
     
    305308}
    306309
    307 MarkerType RE_Compiler::process(Alt * alt, MarkerType marker, PabloBlock & pb) {
     310MarkerType RE_Compiler::process(Alt * alt, MarkerType marker, PabloBuilder & pb) {
    308311    std::vector<PabloAST *>  accum = {pb.createZeroes(), pb.createZeroes(), pb.createZeroes()};
    309312    MarkerType const base = marker;
     
    327330}
    328331
    329 MarkerType RE_Compiler::process(Assertion * a, MarkerType marker, PabloBlock & pb) {
     332MarkerType RE_Compiler::process(Assertion * a, MarkerType marker, PabloBuilder & pb) {
    330333    RE * asserted = a->getAsserted();
    331334    if (a->getKind() == Assertion::Kind::Lookbehind) {
     
    354357}
    355358
    356 MarkerType RE_Compiler::process(Diff * diff, MarkerType marker, PabloBlock & pb) {
     359MarkerType RE_Compiler::process(Diff * diff, MarkerType marker, PabloBuilder & pb) {
    357360    RE * lh = diff->getLH();
    358361    RE * rh = diff->getRH();
     
    366369}
    367370
    368 MarkerType RE_Compiler::process(Intersect * x, MarkerType marker, PabloBlock & pb) {
     371MarkerType RE_Compiler::process(Intersect * x, MarkerType marker, PabloBuilder & pb) {
    369372    RE * lh = x->getLH();
    370373    RE * rh = x->getRH();
     
    378381}
    379382
    380 MarkerType RE_Compiler::process(Rep * rep, MarkerType marker, PabloBlock & pb) {
     383MarkerType RE_Compiler::process(Rep * rep, MarkerType marker, PabloBuilder & pb) {
    381384    int lb = rep->getLB();
    382385    int ub = rep->getUB();
     
    401404*/
    402405
    403 inline PabloAST * RE_Compiler::consecutive1(PabloAST * repeated, int repeated_lgth, int repeat_count, pablo::PabloBlock & pb) {
     406inline PabloAST * RE_Compiler::consecutive1(PabloAST * repeated, int repeated_lgth, int repeat_count, PabloBuilder & pb) {
    404407        int i = repeated_lgth;
    405408        int total_lgth = repeat_count * repeated_lgth;
     
    418421}
    419422
    420 inline PabloAST * RE_Compiler::reachable(PabloAST *repeated, int repeated_lgth, int repeat_count, pablo::PabloBlock & pb) {
     423inline PabloAST * RE_Compiler::reachable(PabloAST *repeated, int repeated_lgth, int repeat_count, PabloBuilder & pb) {
    421424        int i = repeated_lgth;
    422425        int total_lgth = repeat_count * repeated_lgth;
     
    438441}
    439442
    440 MarkerType RE_Compiler::processLowerBound(RE * repeated, int lb, MarkerType marker, PabloBlock & pb) {
     443MarkerType RE_Compiler::processLowerBound(RE * repeated, int lb, MarkerType marker, PabloBuilder & pb) {
    441444    if (isByteLength(repeated) && !DisableLog2BoundedRepetition) {
    442445        PabloAST * cc = markerVar(compile(repeated, pb));
     
    452455}
    453456
    454 MarkerType RE_Compiler::processBoundedRep(RE * repeated, int ub, MarkerType marker, PabloBlock & pb) {
     457MarkerType RE_Compiler::processBoundedRep(RE * repeated, int ub, MarkerType marker, PabloBuilder & pb) {
    455458    if (isByteLength(repeated) && ub > 1 && !DisableLog2BoundedRepetition) {
    456459        // log2 upper bound for fixed length (=1) class
     
    473476}
    474477
    475 MarkerType RE_Compiler::processUnboundedRep(RE * repeated, MarkerType marker, PabloBlock & pb) {
     478MarkerType RE_Compiler::processUnboundedRep(RE * repeated, MarkerType marker, PabloBuilder & pb) {
    476479    // always use PostPosition markers for unbounded repetition.
    477480    PabloAST * base = markerVar(AdvanceMarker(marker, InitialPostPositionByte, pb));
     
    487490    else if (mStarDepth > 0){
    488491       
    489         PabloBlock * outerb = pb.getParent();
     492        PabloBuilder * outerb = pb.getParent();
    490493       
    491494        Assign * starPending = outerb->createAssign("pending", outerb->createZeroes());
     
    509512        mWhileTest = pb.createZeroes();
    510513
    511         PabloBlock & wb = PabloBlock::Create(pb);
     514        PabloBuilder wb = PabloBuilder::Create(pb);
    512515        mStarDepth++;
    513516
  • icGREP/icgrep-devel/icgrep/re/re_compiler.h

    r4609 r4622  
    1111#include <re/re_seq.h>
    1212#include <cc/cc_compiler.h>
    13 
     13#include <pablo/builder.hpp>
    1414#include <string>
    1515#include <list>
     
    1818namespace cc {
    1919class CC_NameMap;
    20 }
    21 
    22 namespace pablo {
    23 class PabloBlock;
    24 class PabloAST;
    25 class Assign;
    26 class Var;
    2720}
    2821
     
    5851public:
    5952
    60     RE_Compiler(pablo::PabloBlock & baseCG);
    61     void initializeRequiredStreams(cc::CC_Compiler & ccc);
     53    RE_Compiler(cc::CC_Compiler & ccCompiler);
     54    void initializeRequiredStreams();
    6255    void finalizeMatchResult(MarkerType match_result);
    6356    MarkerType compile(RE * re) {
     
    6760private:
    6861
    69     MarkerType compile(RE * re, pablo::PabloBlock & cg);
    70     MarkerType AdvanceMarker(MarkerType m, MarkerPosition newpos, pablo::PabloBlock & pb);
     62    MarkerType compile(RE * re, pablo::PabloBuilder & cg);
     63    MarkerType AdvanceMarker(MarkerType m, MarkerPosition newpos, pablo::PabloBuilder & pb);
    7164   
    72     void AlignMarkers(MarkerType & m1, MarkerType & m2, pablo::PabloBlock & pb);
     65    void AlignMarkers(MarkerType & m1, MarkerType & m2, pablo::PabloBuilder & pb);
    7366   
    74     pablo::PabloAST * getNamedCharacterClassStream(Name * name);
    75     pablo::PabloAST * nextUnicodePosition(MarkerType m, pablo::PabloBlock & pb);
    76     MarkerType process(RE * re, MarkerType marker, pablo::PabloBlock & pb);
    77     MarkerType process(Name * name, MarkerType marker, pablo::PabloBlock & pb);
    78     MarkerType process(Seq * seq, MarkerType marker, pablo::PabloBlock & pb);
    79     MarkerType processSeqTail(Seq::iterator current, Seq::iterator end, int matchLenSoFar, MarkerType marker, pablo::PabloBlock & pb);
    80     MarkerType process(Alt * alt, MarkerType marker, pablo::PabloBlock & pb);
    81     MarkerType process(Assertion * a, MarkerType marker, pablo::PabloBlock & pb);
    82     MarkerType process(Rep * rep, MarkerType marker, pablo::PabloBlock & pb);
    83     MarkerType process(Diff * diff, MarkerType marker, pablo::PabloBlock & cg);
    84     MarkerType process(Intersect * x, MarkerType marker, pablo::PabloBlock & cg);
    85     pablo::PabloAST *consecutive1(pablo::PabloAST *repeated,  int repeated_lgth, int repeat_count, pablo::PabloBlock & pb);
    86     pablo::PabloAST * reachable(pablo::PabloAST * repeated,  int repeated_lgth, int repeat_count, pablo::PabloBlock & pb);
     67    pablo::PabloAST * getNamedCharacterClassStream(Name * name, pablo::PabloBuilder & pb);
     68    pablo::PabloAST * nextUnicodePosition(MarkerType m, pablo::PabloBuilder & pb);
     69    MarkerType process(RE * re, MarkerType marker, pablo::PabloBuilder & pb);
     70    MarkerType process(Name * name, MarkerType marker, pablo::PabloBuilder & pb);
     71    MarkerType process(Seq * seq, MarkerType marker, pablo::PabloBuilder & pb);
     72    MarkerType processSeqTail(Seq::iterator current, Seq::iterator end, int matchLenSoFar, MarkerType marker, pablo::PabloBuilder & pb);
     73    MarkerType process(Alt * alt, MarkerType marker, pablo::PabloBuilder & pb);
     74    MarkerType process(Assertion * a, MarkerType marker, pablo::PabloBuilder & pb);
     75    MarkerType process(Rep * rep, MarkerType marker, pablo::PabloBuilder & pb);
     76    MarkerType process(Diff * diff, MarkerType marker, pablo::PabloBuilder & cg);
     77    MarkerType process(Intersect * x, MarkerType marker, pablo::PabloBuilder & cg);
     78    pablo::PabloAST *consecutive1(pablo::PabloAST *repeated,  int repeated_lgth, int repeat_count, pablo::PabloBuilder & pb);
     79    pablo::PabloAST * reachable(pablo::PabloAST * repeated,  int repeated_lgth, int repeat_count, pablo::PabloBuilder & pb);
    8780    static bool isFixedLength(RE * regexp);
    88     MarkerType processLowerBound(RE * repeated,  int lb, MarkerType marker, pablo::PabloBlock & pb);
    89     MarkerType processUnboundedRep(RE * repeated, MarkerType marker, pablo::PabloBlock & pb);
    90     MarkerType processBoundedRep(RE * repeated, int ub, MarkerType marker, pablo::PabloBlock & pb);
     81    MarkerType processLowerBound(RE * repeated,  int lb, MarkerType marker, pablo::PabloBuilder & pb);
     82    MarkerType processUnboundedRep(RE * repeated, MarkerType marker, pablo::PabloBuilder & pb);
     83    MarkerType processBoundedRep(RE * repeated, int ub, MarkerType marker, pablo::PabloBuilder & pb);
    9184
    92     pablo::PabloBlock &                             mPB;
     85private:
     86
     87    cc::CC_Compiler &                               mCCCompiler;
     88    pablo::PabloBuilder                             mPB;
    9389    pablo::Assign *                                 mLineFeed;
    9490    pablo::PabloAST *                               mCRLF;
  • icGREP/icgrep-devel/icgrep/re/re_parser.cpp

    r4516 r4622  
    592592    }
    593593    while (_cursor != _end) {
    594         CharsetOperatorKind op = getCharsetOperator();
     594        const CharsetOperatorKind op = getCharsetOperator();
    595595        switch (op) {
    596596            case intersectOp:
     
    883883        caseInsensitiveInsertRange(cc, lo, hi);
    884884    }
    885     else cc-> insert_range(lo, hi);
    886 }
    887    
    888    
    889 }
     885    else cc->insert_range(lo, hi);
     886}
     887   
     888   
     889}
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