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11105660c875407ade3843cde581d1ec2d482c7f
rdkit/Code/GraphMol/FMCS/FMCS.cpp
Alexander Savelyev 11105660c8 fmcs: fixes #631 with chiralirty
2015-10-07 14:40:31 +03:00

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//
// Copyright (C) 2014 Novartis Institutes for BioMedical Research
//
// @@ All Rights Reserved @@
// This file is part of the RDKit.
// The contents are covered by the terms of the BSD license
// which is included in the file license.txt, found at the root
// of the RDKit source tree.
//
#include <list>
#include <algorithm>
#include <math.h>
#include <boost/property_tree/ptree.hpp>
#include <boost/property_tree/json_parser.hpp>
#include <iostream>
#include <sstream>
#include "SubstructMatchCustom.h"
#include "MaximumCommonSubgraph.h"
namespace RDKit {
void parseMCSParametersJSON (const char* json, MCSParameters* params) {
if(params && json && 0!=strlen(json)) {
std::istringstream ss;
ss.str(json);
std::istream& iss = ss;
boost::property_tree::ptree pt;
boost::property_tree::read_json(ss, pt);
RDKit::MCSParameters& p = *params;
p.MaximizeBonds = pt.get<bool>("MaximizeBonds", p.MaximizeBonds);
p.Threshold = pt.get<double>("Threshold", p.Threshold);
p.Timeout = pt.get<unsigned>("Timeout", p.Timeout);
p.AtomCompareParameters.MatchValences = pt.get<bool>("MatchValences" , p.AtomCompareParameters.MatchValences );
p.AtomCompareParameters.MatchChiralTag= pt.get<bool>("MatchChiralTag", p.AtomCompareParameters.MatchChiralTag);
p.BondCompareParameters.RingMatchesRingOnly = pt.get<bool>("RingMatchesRingOnly", p.BondCompareParameters.RingMatchesRingOnly);
p.BondCompareParameters.CompleteRingsOnly = pt.get<bool>("CompleteRingsOnly", p.BondCompareParameters.CompleteRingsOnly);
p.BondCompareParameters.MatchStereo = pt.get<bool>("MatchStereo", p.BondCompareParameters.MatchStereo);
std::string s = pt.get<std::string>("AtomCompare", "def");
if(0==strcmp("Any", s.c_str()))
p.AtomTyper = MCSAtomCompareAny;
else if(0==strcmp("Elements", s.c_str()))
p.AtomTyper = MCSAtomCompareElements;
else if(0==strcmp("Isotopes", s.c_str()))
p.AtomTyper = MCSAtomCompareIsotopes;
s = pt.get<std::string>("BondCompare", "def");
if(0==strcmp("Any", s.c_str()))
p.BondTyper = MCSBondCompareAny;
else if(0==strcmp("Order", s.c_str()))
p.BondTyper = MCSBondCompareOrder;
else if(0==strcmp("OrderExact", s.c_str()))
p.BondTyper = MCSBondCompareOrderExact;
p.InitialSeed = pt.get<std::string>("InitialSeed", "");
}
}
MCSResult findMCS (const std::vector<ROMOL_SPTR>& mols, const MCSParameters* params) {
MCSParameters p;
if(0 == params)
params = &p;
RDKit::FMCS::MaximumCommonSubgraph fmcs(params);
return fmcs.find(mols);
}
MCSResult findMCS_P (const std::vector<ROMOL_SPTR>& mols, const char* params_json) {
MCSParameters p;
parseMCSParametersJSON(params_json, &p);
return findMCS(mols, &p);
}
MCSResult findMCS (const std::vector<ROMOL_SPTR>& mols,
bool maximizeBonds,
double threshold,
unsigned timeout,
bool verbose,
bool matchValences,
bool ringMatchesRingOnly,
bool completeRingsOnly,
bool matchChiralTag,
AtomComparator atomComp,
BondComparator bondComp){
//AtomComparator atomComp=AtomCompareElements;
//BondComparator bondComp=BondCompareOrder;
MCSParameters *ps=new MCSParameters();
ps->MaximizeBonds=maximizeBonds;
ps->Threshold=threshold;
ps->Timeout=timeout;
ps->Verbose=verbose;
ps->AtomCompareParameters.MatchValences=matchValences;
ps->AtomCompareParameters.MatchChiralTag=matchChiralTag;
switch(atomComp) {
case AtomCompareAny:
ps->AtomTyper=MCSAtomCompareAny;
break;
case AtomCompareElements:
ps->AtomTyper=MCSAtomCompareElements;
break;
case AtomCompareIsotopes:
ps->AtomTyper=MCSAtomCompareIsotopes;
break;
}
switch(bondComp) {
case BondCompareAny:
ps->BondTyper=MCSBondCompareAny;
break;
case BondCompareOrder:
ps->BondTyper=MCSBondCompareOrder;
break;
case BondCompareOrderExact:
ps->BondTyper=MCSBondCompareOrderExact;
break;
}
ps->BondCompareParameters.RingMatchesRingOnly=ringMatchesRingOnly;
ps->BondCompareParameters.CompleteRingsOnly=completeRingsOnly;
MCSResult res=findMCS(mols,ps);
delete ps;
return res;
}
bool MCSProgressCallbackTimeout(const MCSProgressData& stat, const MCSParameters &params, void* userData) {
unsigned long long* t0 = (unsigned long long*)userData;
unsigned long long t = nanoClock();
return t - *t0 <= params.Timeout*1000000ULL;
}
// PREDEFINED FUNCTORS:
//=== ATOM COMPARE ========================================================
static
bool checkAtomChirality (const MCSAtomCompareParameters& p, const ROMol& mol1, unsigned int atom1, const ROMol& mol2, unsigned int atom2) {
const Atom& a1 = *mol1.getAtomWithIdx(atom1);
const Atom& a2 = *mol2.getAtomWithIdx(atom2);
Atom::ChiralType ac1 = a1.getChiralTag();
Atom::ChiralType ac2 = a2.getChiralTag();
if(ac1==Atom::CHI_TETRAHEDRAL_CW || ac1==Atom::CHI_TETRAHEDRAL_CCW) {
return (ac2 == Atom::CHI_TETRAHEDRAL_CW || ac2 == Atom::CHI_TETRAHEDRAL_CCW);
}
return true;
}
bool MCSAtomCompareAny (const MCSAtomCompareParameters& p, const ROMol& mol1, unsigned int atom1, const ROMol& mol2, unsigned int atom2, void* ) {
if(p.MatchChiralTag)
return checkAtomChirality(p, mol1, atom1, mol2, atom2);
return true;
}
bool MCSAtomCompareElements (const MCSAtomCompareParameters& p, const ROMol& mol1, unsigned int atom1, const ROMol& mol2, unsigned int atom2, void* ) {
const Atom& a1 = *mol1.getAtomWithIdx(atom1);
const Atom& a2 = *mol2.getAtomWithIdx(atom2);
if(a1.getAtomicNum() != a2.getAtomicNum())
return false;
if(p.MatchValences && a1.getTotalValence() != a2.getTotalValence())
return false;
if(p.MatchChiralTag)
return checkAtomChirality(p, mol1, atom1, mol2, atom2);
return true;
}
bool MCSAtomCompareIsotopes (const MCSAtomCompareParameters& p, const ROMol& mol1, unsigned int atom1, const ROMol& mol2, unsigned int atom2, void* ud) {
// ignore everything except isotope information:
//if( ! MCSAtomCompareElements (p, mol1, atom1, mol2, atom2, ud))
// return false;
const Atom& a1 = *mol1.getAtomWithIdx(atom1);
const Atom& a2 = *mol2.getAtomWithIdx(atom2);
if(a1.getIsotope() != a2.getIsotope())
return false;
if(p.MatchChiralTag)
return checkAtomChirality(p, mol1, atom1, mol2, atom2);
return true;
}
//=== BOND COMPARE ========================================================
class BondMatchOrderMatrix {
bool MatchMatrix [Bond::ZERO+1] [Bond::ZERO+1];
public:
BondMatchOrderMatrix(bool ignoreAromatization) {
memset(MatchMatrix, 0, sizeof(MatchMatrix));
for(size_t i=0; i <= Bond::ZERO; i++) { // fill cells of the same and unspecified type
MatchMatrix[i][i] = true;
MatchMatrix[Bond::UNSPECIFIED][i] = MatchMatrix[i][Bond::UNSPECIFIED] = true;
MatchMatrix[Bond::ZERO][i] = MatchMatrix[i][Bond::ZERO] = true;
}
if(ignoreAromatization) {
MatchMatrix[Bond::SINGLE][Bond::AROMATIC] = MatchMatrix[Bond::AROMATIC][Bond::SINGLE] = true;
MatchMatrix[Bond::SINGLE][Bond::ONEANDAHALF] = MatchMatrix[Bond::ONEANDAHALF][Bond::SINGLE] = true;
MatchMatrix[Bond::DOUBLE][Bond::TWOANDAHALF] = MatchMatrix[Bond::TWOANDAHALF][Bond::DOUBLE] = true;
MatchMatrix[Bond::TRIPLE][Bond::THREEANDAHALF] = MatchMatrix[Bond::THREEANDAHALF][Bond::TRIPLE] = true;
MatchMatrix[Bond::QUADRUPLE][Bond::FOURANDAHALF] = MatchMatrix[Bond::FOURANDAHALF][Bond::QUADRUPLE] = true;
MatchMatrix[Bond::QUINTUPLE][Bond::FIVEANDAHALF] = MatchMatrix[Bond::FIVEANDAHALF][Bond::QUINTUPLE] = true;
}
}
inline bool isEqual(unsigned i, unsigned j)const {
return MatchMatrix [i] [j];
}
};
static
bool checkBondStereo (const MCSBondCompareParameters& p, const ROMol& mol1, unsigned int bond1, const ROMol& mol2, unsigned int bond2) {
const Bond* b1 = mol1.getBondWithIdx(bond1);
const Bond* b2 = mol2.getBondWithIdx(bond2);
Bond::BondStereo bs1 = b1->getStereo();
Bond::BondStereo bs2 = b2->getStereo();
if(b1->getBondType()==Bond::DOUBLE && b2->getBondType()==Bond::DOUBLE) {
if((bs1==Bond::STEREOZ || bs1==Bond::STEREOE)
&&!(bs2==Bond::STEREOZ || bs2==Bond::STEREOE))
return false;
}
return true;
}
static
bool checkRingMatch(const MCSBondCompareParameters& p, const ROMol& mol1, unsigned int bond1, const ROMol& mol2, unsigned int bond2, void* v_ringMatchMatrixSet) {
if(!v_ringMatchMatrixSet)
throw "v_ringMatchMatrixSet is NULL"; // never
FMCS::RingMatchTableSet* ringMatchMatrixSet = static_cast<FMCS::RingMatchTableSet*>(v_ringMatchMatrixSet);
const std::vector<size_t>& ringsIdx1 = ringMatchMatrixSet->getQueryBondRings (bond1); //indeces of rings
const std::vector<size_t>& ringsIdx2 = ringMatchMatrixSet->getTargetBondRings(&mol2, bond2); //indeces of rings
bool bond1inRing = !ringsIdx1.empty();
bool bond2inRing = !ringsIdx2.empty();
if(bond1inRing != bond2inRing)
return false;
if((! bond1inRing) )//the same: && (! bond2inRing)) // both bonds are NOT in rings
return true;
// both bonds are in rings
if(p.CompleteRingsOnly) {
const RingInfo::VECT_INT_VECT& r1 = mol1.getRingInfo()->bondRings();
const RingInfo::VECT_INT_VECT& r2 = mol2.getRingInfo()->bondRings();
// for each query ring contains bond1
for(std::vector<size_t>::const_iterator r1i = ringsIdx1.begin(); r1i != ringsIdx1.end(); r1i++) {
const INT_VECT& br1 = r1[*r1i]; // ring contains bond1
// check all target rings contained bond2
for(std::vector<size_t>::const_iterator r2i = ringsIdx2.begin(); r2i != ringsIdx2.end(); r2i++) {
const INT_VECT& br2 = r2[*r2i]; // ring contains bond2
if(br1.size() != br2.size()) // rings are different
continue;
// compare rings as substructures
if(ringMatchMatrixSet->isEqual(&br1, &br2, &mol2)) // EQUAL Rings found
return true;
}
}
// all rings are different
return false;
} else
return true; // bond1inRing && bond2inRing; // both bonds are in rings
}
bool MCSBondCompareAny (const MCSBondCompareParameters& p, const ROMol& mol1, unsigned int bond1, const ROMol& mol2, unsigned int bond2, void* ud) {
if(p.MatchStereo && ! checkBondStereo(p, mol1, bond1, mol2, bond2))
return false;
if(p.RingMatchesRingOnly)
return checkRingMatch(p, mol1, bond1, mol2, bond2, ud);
return true;
}
bool MCSBondCompareOrder (const MCSBondCompareParameters& p, const ROMol& mol1, unsigned int bond1, const ROMol& mol2, unsigned int bond2, void* ud) {
static const BondMatchOrderMatrix match(true); // ignore Aromatization
const Bond* b1 = mol1.getBondWithIdx(bond1);
const Bond* b2 = mol2.getBondWithIdx(bond2);
Bond::BondType t1 = b1->getBondType();
Bond::BondType t2 = b2->getBondType();
if(match.isEqual(t1,t2)) {
if(p.MatchStereo && ! checkBondStereo(p, mol1, bond1, mol2, bond2))
return false;
if(p.RingMatchesRingOnly)
return checkRingMatch(p, mol1, bond1, mol2, bond2, ud);
return true;
}
return false;
}
bool MCSBondCompareOrderExact (const MCSBondCompareParameters& p, const ROMol& mol1, unsigned int bond1, const ROMol& mol2, unsigned int bond2, void* ud) {
static const BondMatchOrderMatrix match(false); // AROMATIC != SINGLE
const Bond* b1 = mol1.getBondWithIdx(bond1);
const Bond* b2 = mol2.getBondWithIdx(bond2);
Bond::BondType t1 = b1->getBondType();
Bond::BondType t2 = b2->getBondType();
if(match.isEqual(t1,t2)) {
if(p.MatchStereo && ! checkBondStereo(p, mol1, bond1, mol2, bond2))
return false;
if(p.RingMatchesRingOnly)
return checkRingMatch(p, mol1, bond1, mol2, bond2, ud);
return true;
}
return false;
}
bool FinalChiralityCheckFunction (const short unsigned c1[], const short unsigned c2[],
const ROMol& mol1, const FMCS::Graph& query, const ROMol& mol2, const FMCS::Graph& target, const MCSParameters* p) {
const unsigned int qna = boost::num_vertices(query); // getNumAtoms()
// check chiral atoms only:
for(unsigned int i=0; i < qna; ++i) {
const Atom& a1 = *mol1.getAtomWithIdx(query [c1[i]]);
Atom::ChiralType ac1 = a1.getChiralTag();
const Atom& a2 = *mol2.getAtomWithIdx(target[c2[i]]);
Atom::ChiralType ac2 = a2.getChiralTag();
///*------------------ OLD Code :
// ???: non chiral query atoms ARE ALLOWED TO MATCH to Chiral target atoms
// (see test for issue 481)
if(!(ac1==Atom::CHI_TETRAHEDRAL_CW || ac1==Atom::CHI_TETRAHEDRAL_CCW))
continue; // skip non chiral center QUERY atoms
if(!(ac2==Atom::CHI_TETRAHEDRAL_CW || ac2==Atom::CHI_TETRAHEDRAL_CCW))
return false;
//--------------------
/* More accurate check:
if( !(ac1 == Atom::CHI_TETRAHEDRAL_CW || ac1 == Atom::CHI_TETRAHEDRAL_CCW)
&& !(ac2 == Atom::CHI_TETRAHEDRAL_CW || ac2 == Atom::CHI_TETRAHEDRAL_CCW))
continue; // skip check if both atoms are non chiral center
if(!( (ac1 == Atom::CHI_TETRAHEDRAL_CW || ac1 == Atom::CHI_TETRAHEDRAL_CCW)
&& (ac2 == Atom::CHI_TETRAHEDRAL_CW || ac2 == Atom::CHI_TETRAHEDRAL_CCW)))//ac2 != ac1)
return false; // both atoms must be chiral or not without a query priority
*/
const unsigned a1Degree = boost::out_degree(c1[i], query);// a1.getDegree();
if(a1Degree != a2.getDegree()) { // number of all connected atoms in seed
//FIX issue 631
// printf("atoms Degree (%u, %u) %u [%u], %u\n", query[c1[i]], target[c2[i]], a1Degree, a1.getDegree(), a2.getDegree());
if(1==a1Degree && a1.getDegree() == a2.getDegree())
continue; // continue to grow the seed
else
return false;
}
INT_LIST qOrder;
for(unsigned int j=0; j < qna && qOrder.size() != a1Degree; ++j) {
const Bond *qB = mol1.getBondBetweenAtoms(query[c1[i]], query [c1[j]]);
if(qB)
qOrder.push_back(qB->getIdx());
}
int qPermCount = a1.getPerturbationOrder(qOrder);
INT_LIST mOrder;
for(unsigned int j=0; j < qna && mOrder.size() != a2.getDegree(); ++j) {
const Bond *mB = mol2.getBondBetweenAtoms(target[c2[i]], target[c2[j]]);
if(mB)
mOrder.push_back(mB->getIdx());
}
int mPermCount=a2.getPerturbationOrder(mOrder);
if ((qPermCount % 2 == mPermCount % 2 && a1.getChiralTag() != a2.getChiralTag())
|| (qPermCount % 2 != mPermCount % 2 && a1.getChiralTag() == a2.getChiralTag()))
return false;
}
// check double bonds ONLY (why ???)
const unsigned int qnb = boost::num_edges(query);
std::map<unsigned int,unsigned int> qMap;
for(unsigned int j=0; j < qna; ++j)
qMap[query[c1[j]]] = j;
RDKit::FMCS::Graph::BOND_ITER_PAIR bpIter = boost::edges(query);
RDKit::FMCS::Graph::EDGE_ITER bIter = bpIter.first;
for(unsigned int i=0; i < qnb; i++, ++bIter) {
unsigned qtbi = query[*bIter]; // bond index in seed topology defenition
const Bond *qBnd=mol1.getBondWithIdx(query[*bIter]);
if(qBnd->getBondType()!=Bond::DOUBLE
||(qBnd->getStereo()!=Bond::STEREOZ && qBnd->getStereo()!=Bond::STEREOE))
continue;
// don't think this can actually happen, but check to be sure:
if(qBnd->getStereoAtoms().size()!=2) // MUST check it in the seed, not in full query molecule, but never happens !!!
continue;
const Bond *mBnd=mol2.getBondBetweenAtoms(target[c2[qMap[qBnd->getBeginAtomIdx()]]],
target[c2[qMap[qBnd->getEndAtomIdx ()]]]);
CHECK_INVARIANT(mBnd,"Matching bond not found");
if(mBnd->getBondType()!=Bond::DOUBLE
||(mBnd->getStereo()!=Bond::STEREOZ && mBnd->getStereo()!=Bond::STEREOE))
continue;
// don't think this can actually happen, but check to be sure:
if(mBnd->getStereoAtoms().size()!=2) continue;
unsigned int end1Matches=0;
unsigned int end2Matches=0;
if(target[c2[qMap[qBnd->getBeginAtomIdx()]]]==mBnd->getBeginAtomIdx()){
// query Begin == mol Begin
if(target[c2[qMap[qBnd->getStereoAtoms()[0]]]]==mBnd->getStereoAtoms()[0]) end1Matches=1;
if(target[c2[qMap[qBnd->getStereoAtoms()[1]]]]==mBnd->getStereoAtoms()[1]) end2Matches=1;
} else {
// query End == mol Begin
if(target[c2[qMap[qBnd->getStereoAtoms()[0]]]]==mBnd->getStereoAtoms()[1])
end1Matches=1;
if(target[c2[qMap[qBnd->getStereoAtoms()[1]]]]==mBnd->getStereoAtoms()[0])
end2Matches=1;
}
//std::cerr<<" bnd: "<<qBnd->getIdx()<<":"<<qBnd->getStereo()<<" - "<<mBnd->getIdx()<<":"<<mBnd->getStereo()<<" -- "<<end1Matches<<" "<<end2Matches<<std::endl;
if(mBnd->getStereo()==qBnd->getStereo() && (end1Matches+end2Matches)==1)
return false;
if(mBnd->getStereo()!=qBnd->getStereo() && (end1Matches+end2Matches)!=1)
return false;
}
return true;
}
bool FinalChiralityCheckFunction_1 (const short unsigned c1[], const short unsigned c2[],
const ROMol& mol1, const FMCS::Graph& query, const ROMol& mol2, const FMCS::Graph& target, const MCSParameters* p) {
const unsigned int qna = boost::num_vertices(query); // getNumAtoms()
// check chiral atoms:
for(unsigned int i=0; i < qna; ++i) {
const Atom& a1 = *mol1.getAtomWithIdx(query [c1[i]]);
Atom::ChiralType ac1 = a1.getChiralTag();
if(!(ac1==Atom::CHI_TETRAHEDRAL_CW || ac1==Atom::CHI_TETRAHEDRAL_CCW))
continue; // skip non chiral center query atoms
const Atom& a2 = *mol2.getAtomWithIdx(target[c2[i]]);
Atom::ChiralType ac2 = a2.getChiralTag();
if(!(ac2==Atom::CHI_TETRAHEDRAL_CW || ac2==Atom::CHI_TETRAHEDRAL_CCW))
continue; // skip non chiral center TARGET atoms even if query atom is chiral
//// return false;
// both atoms are chiral:
const unsigned a1Degree = boost::out_degree(c1[i], query);// a1.getDegree();
if(a1Degree != a2.getDegree()) // number of all connected atoms in seed
return false; // ???
INT_LIST qOrder;
for(unsigned int j=0; j < qna && qOrder.size() != a1Degree; ++j) {
const Bond *qB = mol1.getBondBetweenAtoms(query[c1[i]], query [c1[j]]);
if(qB)
qOrder.push_back(qB->getIdx());
}
int qPermCount = a1.getPerturbationOrder(qOrder);
INT_LIST mOrder;
for(unsigned int j=0; j < qna && mOrder.size() != a2.getDegree(); ++j) {
const Bond *mB = mol2.getBondBetweenAtoms(target[c2[i]], target[c2[j]]);
if(mB)
mOrder.push_back(mB->getIdx());
}
int mPermCount=a2.getPerturbationOrder(mOrder);
if( (qPermCount%2 == mPermCount%2 && a1.getChiralTag() != a2.getChiralTag())
||(qPermCount%2 != mPermCount%2 && a1.getChiralTag() == a2.getChiralTag()) )
return false;
}
// check double bonds ONLY (why ???)
const unsigned int qnb = boost::num_edges(query);
std::map<unsigned int,unsigned int> qMap;
for(unsigned int j=0; j < qna; ++j)
qMap[query[c1[j]]] = j;
RDKit::FMCS::Graph::BOND_ITER_PAIR bpIter = boost::edges(query);
RDKit::FMCS::Graph::EDGE_ITER bIter = bpIter.first;
for(unsigned int i=0; i < qnb; i++, ++bIter) {
unsigned qtbi = query[*bIter]; // bond index in seed topology defenition
const Bond *qBnd=mol1.getBondWithIdx(query[*bIter]);
if(qBnd->getBondType()!=Bond::DOUBLE
||(qBnd->getStereo()!=Bond::STEREOZ && qBnd->getStereo()!=Bond::STEREOE))
continue;
// don't think this can actually happen, but check to be sure:
if(qBnd->getStereoAtoms().size()!=2) // MUST check it in the seed, not in full query molecule, but never happens !!!
continue;
const Bond *mBnd=mol2.getBondBetweenAtoms(target[c2[qMap[qBnd->getBeginAtomIdx()]]],
target[c2[qMap[qBnd->getEndAtomIdx ()]]]);
CHECK_INVARIANT(mBnd,"Matching bond not found");
if(mBnd->getBondType()!=Bond::DOUBLE
||(mBnd->getStereo()!=Bond::STEREOZ && mBnd->getStereo()!=Bond::STEREOE))
continue;
// don't think this can actually happen, but check to be sure:
if(mBnd->getStereoAtoms().size()!=2) continue;
unsigned int end1Matches=0;
unsigned int end2Matches=0;
if(target[c2[qMap[qBnd->getBeginAtomIdx()]]]==mBnd->getBeginAtomIdx()){
// query Begin == mol Begin
if(target[c2[qMap[qBnd->getStereoAtoms()[0]]]]==mBnd->getStereoAtoms()[0]) end1Matches=1;
if(target[c2[qMap[qBnd->getStereoAtoms()[1]]]]==mBnd->getStereoAtoms()[1]) end2Matches=1;
} else {
// query End == mol Begin
if(target[c2[qMap[qBnd->getStereoAtoms()[0]]]]==mBnd->getStereoAtoms()[1])
end1Matches=1;
if(target[c2[qMap[qBnd->getStereoAtoms()[1]]]]==mBnd->getStereoAtoms()[0])
end2Matches=1;
}
//std::cerr<<" bnd: "<<qBnd->getIdx()<<":"<<qBnd->getStereo()<<" - "<<mBnd->getIdx()<<":"<<mBnd->getStereo()<<" -- "<<end1Matches<<" "<<end2Matches<<std::endl;
if(mBnd->getStereo()==qBnd->getStereo() && (end1Matches+end2Matches)==1)
return false;
if(mBnd->getStereo()!=qBnd->getStereo() && (end1Matches+end2Matches)!=1)
return false;
}
return true;
}
} // namespace RDKit
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