brancher-view.hpp /usr/include/gecode/kernel.hh Gecode::Pos Gecode::PosChoice Gecode::ViewBrancher Gecode /*-*-mode:C++;c-basic-offset:2;indent-tabs-mode:nil-*-*/ /* *Mainauthors: *ChristianSchulte<schulte@gecode.org> * *Copyright: *ChristianSchulte,2012 * *Lastmodified: *$Date:2013-05-2216:48:57+0200(Wed,22May2013)$by$Author:schulte$ *$Revision:13654$ * *ThisfileispartofGecode,thegenericconstraint *developmentenvironment: *http://www.gecode.org * *Permissionisherebygranted,freeofcharge,toanypersonobtaining *acopyofthissoftwareandassociateddocumentationfiles(the *"Software"),todealintheSoftwarewithoutrestriction,including *withoutlimitationtherightstouse,copy,modify,merge,publish, *distribute,sublicense,and/orsellcopiesoftheSoftware,andto *permitpersonstowhomtheSoftwareisfurnishedtodoso,subjectto *thefollowingconditions: * *Theabovecopyrightnoticeandthispermissionnoticeshallbe *includedinallcopiesorsubstantialportionsoftheSoftware. * *THESOFTWAREISPROVIDED"ASIS",WITHOUTWARRANTYOFANYKIND, *EXPRESSORIMPLIED,INCLUDINGBUTNOTLIMITEDTOTHEWARRANTIESOF *MERCHANTABILITY,FITNESSFORAPARTICULARPURPOSEAND *NONINFRINGEMENT.INNOEVENTSHALLTHEAUTHORSORCOPYRIGHTHOLDERSBE *LIABLEFORANYCLAIM,DAMAGESOROTHERLIABILITY,WHETHERINANACTION *OFCONTRACT,TORTOROTHERWISE,ARISINGFROM,OUTOFORINCONNECTION *WITHTHESOFTWAREORTHEUSEOROTHERDEALINGSINTHESOFTWARE. * */ namespaceGecode{ classPos{ public: constintpos; Pos(intp); }; classGECODE_VTABLE_EXPORTPosChoice:publicChoice{ private: constPos_pos; public: PosChoice(constBrancher&b,unsignedinta,constPos&p); constPos&pos(void)const; virtualsize_tsize(void)const; virtualvoidarchive(Archive&e)const; }; template<classView,intn> classViewBrancher:publicBrancher{ protected: typedeftypenameBranchTraits<typename View::VarType>::FilterBranchFilter; ViewArray<View>x; mutableintstart; ViewSel<View>*vs[n]; BranchFilterbf; Pospos(Space&home); Viewview(constPos&p)const; ViewBrancher(Space&home,boolshared,ViewBrancher<View,n>&b); ViewBrancher(Homehome,ViewArray<View>&x, ViewSel<View>*vs[n],BranchFilterbf); public: virtualboolstatus(constSpace&home)const; virtualsize_tdispose(Space&home); }; /* *Positioninformation * */ forceinline Pos::Pos(intp):pos(p){} /* *Choicewithposition * */ forceinline PosChoice::PosChoice(constBrancher&b,unsignedinta,constPos&p) :Choice(b,a),_pos(p){} forceinlineconstPos& PosChoice::pos(void)const{ return_pos; } forceinlinesize_t PosChoice::size(void)const{ returnsizeof(PosChoice); } forceinlinevoid PosChoice::archive(Archive&e)const{ Choice::archive(e); e<<_pos.pos; } template<classView,intn> forceinline ViewBrancher<View,n>::ViewBrancher(Homehome,ViewArray<View>&x0, ViewSel<View>*vs0[n],BranchFilterbf0) :Brancher(home),x(x0),start(0),bf(bf0){ for(inti=0;i<n;i++) vs[i]=vs0[i]; for(inti=0;i<n;i++) if(vs[i]->notice()){ home.notice(*this,AP_DISPOSE); break; } } template<classView,intn> forceinline ViewBrancher<View,n>::ViewBrancher(Space&home,boolshared, ViewBrancher<View,n>&vb) :Brancher(home,shared,vb),start(vb.start),bf(vb.bf){ x.update(home,shared,vb.x); for(inti=0;i<n;i++) vs[i]=vb.vs[i]->copy(home,shared); } template<classView,intn> bool ViewBrancher<View,n>::status(constSpace&home)const{ if(bf==NULL){ for(inti=start;i<x.size();i++) if(!x[i].assigned()){ start=i; returntrue; } }else{ for(inti=start;i<x.size();i++){ typenameView::VarTypey(x[i].varimp()); if(!x[i].assigned()&&bf(home,y,i)){ start=i; returntrue; } } } returnfalse; } template<classView,intn> inlinePos ViewBrancher<View,n>::pos(Space&home){ assert(!x[start].assigned()); ints; if(bf==NULL){ if(n==1){ s=vs[0]->select(home,x,start); }else{ Regionr(home); int*ties=r.alloc<int>(x.size()-start+1); intn_ties; vs[0]->ties(home,x,start,ties,n_ties); for(inti=1;(i<n-1)&&(n_ties>1);i++) vs[i]->brk(home,x,ties,n_ties); if(n_ties>1) s=vs[n-1]->select(home,x,ties,n_ties); else s=ties[0]; } }else{ if(n==1){ s=vs[0]->select(home,x,start,bf); }else{ Regionr(home); int*ties=r.alloc<int>(x.size()-start+1); intn_ties; vs[0]->ties(home,x,start,ties,n_ties,bf); for(inti=1;(i<n-1)&&(n_ties>1);i++) vs[i]->brk(home,x,ties,n_ties); if(n_ties>1) s=vs[n-1]->select(home,x,ties,n_ties); else s=ties[0]; } } Posp(s); returnp; } template<classView,intn> forceinlineView ViewBrancher<View,n>::view(constPos&p)const{ returnx[p.pos]; } template<classView,intn> forceinlinesize_t ViewBrancher<View,n>::dispose(Space&home){ for(inti=0;i<n;i++) if(vs[i]->notice()){ home.ignore(*this,AP_DISPOSE,true); break; } for(inti=0;i<n;i++) vs[i]->dispose(home); (void)Brancher::dispose(home); returnsizeof(ViewBrancher<View,n>); } } //STATISTICS:kernel-branch