Changes in src/Tuples/TupleAssignment.cc [d3b7937:3c13c03]
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src/Tuples/TupleAssignment.cc (modified) (3 diffs)
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src/Tuples/TupleAssignment.cc
rd3b7937 r3c13c03 5 5 // file "LICENCE" distributed with Cforall. 6 6 // 7 // TupleAssignment.cc -- 7 // TupleAssignment.cc -- 8 8 // 9 9 // Author : Rodolfo G. Esteves … … 18 18 #include "ResolvExpr/typeops.h" 19 19 #include "SynTree/Expression.h" 20 #include "TupleAssignment.h" 20 #include "SynTree/Initializer.h" 21 #include "Tuples.h" 21 22 #include "Common/SemanticError.h" 22 23 … … 27 28 #include <cassert> 28 29 #include <set> 30 #include <unordered_set> 29 31 30 32 namespace Tuples { 31 TupleAssignSpotter::TupleAssignSpotter( ResolvExpr::AlternativeFinder *f = 0 ) 32 : currentFinder(f), matcher(0), hasMatched( false ) {} 33 34 bool TupleAssignSpotter::pointsToTuple( Expression *expr ) { 33 class TupleAssignSpotter { 34 public: 35 // dispatcher for Tuple (multiple and mass) assignment operations 36 TupleAssignSpotter( ResolvExpr::AlternativeFinder & ); 37 void spot( UntypedExpr * expr, std::list<ResolvExpr::AltList> &possibilities ); 38 39 private: 40 void match(); 41 42 struct Matcher { 43 public: 44 Matcher( TupleAssignSpotter &spotter, ResolvExpr::Alternative & lhs, ResolvExpr::Alternative & rhs ); 45 virtual ~Matcher() {} 46 virtual void match( std::list< Expression * > &out ) = 0; 47 ResolvExpr::AltList lhs, rhs; 48 TupleAssignSpotter &spotter; 49 std::list< ObjectDecl * > tmpDecls; 50 }; 51 52 struct MassAssignMatcher : public Matcher { 53 public: 54 MassAssignMatcher( TupleAssignSpotter &spotter, ResolvExpr::Alternative & lhs, ResolvExpr::Alternative & rhs ); 55 virtual void match( std::list< Expression * > &out ); 56 }; 57 58 struct MultipleAssignMatcher : public Matcher { 59 public: 60 MultipleAssignMatcher( TupleAssignSpotter &spot, ResolvExpr::Alternative & lhs, ResolvExpr::Alternative & rhs ); 61 virtual void match( std::list< Expression * > &out ); 62 }; 63 64 ResolvExpr::AlternativeFinder ¤tFinder; 65 // Expression *rhs, *lhs; 66 Matcher *matcher = nullptr; 67 }; 68 69 /// true if expr is an expression of tuple type, i.e. a tuple expression, tuple variable, or MRV (multiple-return-value) function 70 bool isTuple( Expression *expr ) { 71 if ( ! expr ) return false; 72 assert( expr->has_result() ); 73 return dynamic_cast<TupleExpr *>(expr) || expr->get_result()->size() > 1; 74 } 75 76 bool pointsToTuple( Expression *expr ) { 35 77 // also check for function returning tuple of reference types 36 if ( AddressExpr *addr = dynamic_cast<AddressExpr *>(expr) )37 if ( isTuple(addr->get_arg() ) )38 return true;78 if ( AddressExpr *addr = dynamic_cast< AddressExpr * >( expr) ) { 79 return isTuple( addr->get_arg() ); 80 } 39 81 return false; 40 82 } 41 83 42 bool TupleAssignSpotter::isTupleVar( DeclarationWithType *decl ) { 43 if ( dynamic_cast<TupleType *>(decl->get_type()) ) 44 return true; 45 return false; 46 } 47 48 bool TupleAssignSpotter::isTuple( Expression *expr, bool isRight ) { 49 // true if `expr' is an expression returning a tuple: tuple, tuple variable or MRV function 50 if ( ! expr ) return false; 51 52 if ( dynamic_cast<TupleExpr *>(expr) ) 53 return true; 54 else if ( VariableExpr *var = dynamic_cast<VariableExpr *>(expr) ) { 55 if ( isTupleVar(var->get_var()) ) 56 return true; 57 } 58 59 return false; 60 } 61 62 bool TupleAssignSpotter::match() { 63 assert ( matcher != 0 ); 64 65 std::list< Expression * > new_assigns; 66 if ( ! matcher->match(new_assigns) ) 67 return false; 68 69 if ( new_assigns.empty() ) return false; 70 /*return */matcher->solve( new_assigns ); 71 if ( dynamic_cast<TupleAssignSpotter::MultipleAssignMatcher *>( matcher ) ) { 72 // now resolve new assignments 73 std::list< Expression * > solved_assigns; 74 ResolvExpr::AltList solved_alts; 75 assert( currentFinder != 0 ); 76 77 ResolvExpr::AltList current; 78 for ( std::list< Expression * >::iterator i = new_assigns.begin(); i != new_assigns.end(); ++i ) { 79 //try { 80 ResolvExpr::AlternativeFinder finder( currentFinder->get_indexer(), currentFinder->get_environ() ); 81 finder.findWithAdjustment(*i); 82 // prune expressions that don't coincide with 83 ResolvExpr::AltList alts = finder.get_alternatives(); 84 assert( alts.size() == 1 ); 85 assert(alts.front().expr != 0 ); 86 current.push_back( finder.get_alternatives().front() ); 87 solved_assigns.push_back( alts.front().expr->clone() ); 88 //solved_assigns.back()->print(std::cerr); 89 /*} catch( ... ) { 90 continue; // no reasonable alternative found 91 }*/ 92 } 93 options.add_option( current ); 94 95 return true; 96 } else { // mass assignment 97 //if ( new_assigns.empty() ) return false; 98 std::list< Expression * > solved_assigns; 99 ResolvExpr::AltList solved_alts; 100 assert( currentFinder != 0 ); 101 102 ResolvExpr::AltList current; 103 if ( optMass.empty() ) { 104 for ( std::list< Expression * >::size_type i = 0; i != new_assigns.size(); ++i ) 105 optMass.push_back( ResolvExpr::AltList() ); 106 } 107 int cnt = 0; 108 for ( std::list< Expression * >::iterator i = new_assigns.begin(); i != new_assigns.end(); ++i, cnt++ ) { 109 110 ResolvExpr::AlternativeFinder finder( currentFinder->get_indexer(), currentFinder->get_environ() ); 111 finder.findWithAdjustment(*i); 112 ResolvExpr::AltList alts = finder.get_alternatives(); 113 assert( alts.size() == 1 ); 114 assert(alts.front().expr != 0 ); 115 current.push_back( finder.get_alternatives().front() ); 116 optMass[cnt].push_back( finder.get_alternatives().front() ); 117 solved_assigns.push_back( alts.front().expr->clone() ); 118 } 119 120 return true; 121 } 122 123 return false; 124 } 125 126 bool TupleAssignSpotter::isMVR( Expression *expr ) { 127 if ( expr->get_results().size() > 1 ) { 128 // MVR processing 129 return true; 130 } 131 return false; 132 } 133 134 bool TupleAssignSpotter::isTupleAssignment( UntypedExpr * expr, std::list<ResolvExpr::AltList> &possibilities ) { 84 void handleTupleAssignment( ResolvExpr::AlternativeFinder & currentFinder, UntypedExpr * expr, std::list<ResolvExpr::AltList> &possibilities ) { 85 TupleAssignSpotter spotter( currentFinder ); 86 spotter.spot( expr, possibilities ); 87 } 88 89 TupleAssignSpotter::TupleAssignSpotter( ResolvExpr::AlternativeFinder &f ) 90 : currentFinder(f) {} 91 92 void TupleAssignSpotter::spot( UntypedExpr * expr, std::list<ResolvExpr::AltList> &possibilities ) { 135 93 if ( NameExpr *assgnop = dynamic_cast< NameExpr * >(expr->get_function()) ) { 136 137 if ( assgnop->get_name() == std::string("?=?") ) { 138 94 if ( assgnop->get_name() == "?=?" ) { 139 95 for ( std::list<ResolvExpr::AltList>::iterator ali = possibilities.begin(); ali != possibilities.end(); ++ali ) { 140 assert( ali->size() == 2 ); 141 ResolvExpr::AltList::iterator opit = ali->begin(); 142 ResolvExpr::Alternative op1 = *opit, op2 = *(++opit); 143 144 if ( pointsToTuple(op1.expr) ) { // also handles tuple vars 145 if ( isTuple( op2.expr, true ) ) 146 matcher = new MultipleAssignMatcher(op1.expr, op2.expr); 147 else if ( isMVR( op2.expr ) ) { 148 // handle MVR differently 149 } else 96 if ( ali->size() != 2 ) continue; // what does it mean if an assignment takes >2 arguments? grab args 2-N and group into a TupleExpr, then proceed? 97 ResolvExpr::Alternative & alt1 = ali->front(), & alt2 = ali->back(); 98 99 if ( pointsToTuple(alt1.expr) ) { 100 MultipleAssignMatcher multiMatcher( *this, alt1, alt2 ); 101 MassAssignMatcher massMatcher( *this, alt1, alt2 ); 102 if ( isTuple( alt2.expr ) ) { 103 matcher = &multiMatcher; 104 } else { 150 105 // mass assignment 151 matcher = new MassAssignMatcher(op1.expr, op2.expr); 152 153 std::list< ResolvExpr::AltList > options; 154 if ( match() ) 155 /* 156 if ( hasMatched ) { 157 // throw SemanticError("Ambiguous tuple assignment"); 158 } else {*/ 159 // Matched for the first time 160 hasMatched = true; 161 /*} */ 162 } /* else if ( isTuple( op2 ) ) 163 throw SemanticError("Inapplicable tuple assignment."); 164 */ 165 } 166 167 if ( hasMatched ) { 168 if ( dynamic_cast<TupleAssignSpotter::MultipleAssignMatcher *>( matcher ) ) { 169 //options.print( std::cerr ); 170 std::list< ResolvExpr::AltList >best = options.get_best(); 171 if ( best.size() == 1 ) { 172 std::list<Expression *> solved_assigns; 173 for ( ResolvExpr::AltList::iterator i = best.front().begin(); i != best.front().end(); ++i ) { 174 solved_assigns.push_back( i->expr ); 175 } 176 /* assigning cost zero? */ 177 currentFinder->get_alternatives().push_front( ResolvExpr::Alternative(new SolvedTupleExpr(solved_assigns/*, SolvedTupleExpr::MULTIPLE*/), currentFinder->get_environ(), ResolvExpr::Cost() ) ); 106 matcher = &massMatcher; 178 107 } 179 } else { 180 assert( ! optMass.empty() ); 181 ResolvExpr::AltList winners; 182 for ( std::vector< ResolvExpr::AltList >::iterator i = optMass.begin(); i != optMass.end(); ++i ) 183 findMinCostAlt( i->begin(), i->end(), back_inserter(winners) ); 184 185 std::list< Expression *> solved_assigns; 186 for ( ResolvExpr::AltList::iterator i = winners.begin(); i != winners.end(); ++i ) 187 solved_assigns.push_back( i->expr ); 188 currentFinder->get_alternatives().push_front( ResolvExpr::Alternative(new SolvedTupleExpr(solved_assigns/*, SolvedTupleExpr::MASS*/), currentFinder->get_environ(), ResolvExpr::Cost() ) ); 108 match(); 109 } else if ( isTuple( alt2.expr ) ) { 110 throw SemanticError("Cannot assign a tuple value into a non-tuple lvalue.", expr); 189 111 } 190 112 } 191 113 } 192 114 } 193 return hasMatched; 194 } 195 196 void TupleAssignSpotter::Matcher::init( Expression *_lhs, Expression *_rhs ) { 197 lhs.clear(); 198 if (AddressExpr *addr = dynamic_cast<AddressExpr *>(_lhs) ) 199 if ( TupleExpr *tuple = dynamic_cast<TupleExpr *>(addr->get_arg()) ) 200 std::copy( tuple->get_exprs().begin(), tuple->get_exprs().end(), back_inserter(lhs) ); 201 202 rhs.clear(); 203 } 204 205 TupleAssignSpotter::Matcher::Matcher( /*TupleAssignSpotter &spot,*/ Expression *_lhs, Expression *_rhs ) /*: own_spotter(spot) */{ 206 init(_lhs,_rhs); 207 } 208 209 TupleAssignSpotter::MultipleAssignMatcher::MultipleAssignMatcher( Expression *_lhs, Expression *_rhs )/* : own_spotter(spot) */{ 210 init(_lhs,_rhs); 211 212 if ( TupleExpr *tuple = dynamic_cast<TupleExpr *>(_rhs) ) 213 std::copy( tuple->get_exprs().begin(), tuple->get_exprs().end(), back_inserter(rhs) ); 214 } 215 216 UntypedExpr *TupleAssignSpotter::Matcher::createAssgn( Expression *left, Expression *right ) { 217 if ( left && right ) { 218 std::list< Expression * > args; 219 args.push_back(new AddressExpr(left->clone())); args.push_back(right->clone()); 220 return new UntypedExpr(new NameExpr("?=?"), args); 221 } else 222 throw 0; // xxx - diagnose the problem 223 } 224 225 bool TupleAssignSpotter::MassAssignMatcher::match( std::list< Expression * > &out ) { 226 if ( lhs.empty() || (rhs.size() != 1) ) return false; 227 228 for ( std::list< Expression * >::iterator l = lhs.begin(); l != lhs.end(); l++ ) { 229 std::list< Expression * > args; 230 args.push_back( new AddressExpr(*l) ); 231 args.push_back( rhs.front() ); 232 out.push_back( new UntypedExpr(new NameExpr("?=?"), args) ); 233 } 234 235 return true; 236 } 237 238 bool TupleAssignSpotter::MassAssignMatcher::solve( std::list< Expression * > &assigns ) { 239 /* 240 std::list< Expression * > solved_assigns; 241 ResolvExpr::AltList solved_alts; 242 assert( currentFinder != 0 ); 243 244 ResolvExpr::AltList current; 245 if ( optMass.empty() ) { 246 for ( std::list< Expression * >::size_type i = 0; i != new_assigns.size(); ++i ) 247 optMass.push_back( ResolvExpr::AltList() ); 248 } 249 int cnt = 0; 250 for ( std::list< Expression * >::iterator i = new_assigns.begin(); i != new_assigns.end(); ++i, cnt++ ) { 251 252 ResolvExpr::AlternativeFinder finder( currentFinder->get_indexer(), currentFinder->get_environ() ); 253 finder.findWithAdjustment(*i); 254 ResolvExpr::AltList alts = finder.get_alternatives(); 255 assert( alts.size() == 1 ); 256 assert(alts.front().expr != 0 ); 257 current.push_back( finder.get_alternatives().front() ); 258 optMass[cnt].push_back( finder.get_alternatives().front() ); 259 solved_assigns.push_back( alts.front().expr->clone() ); 260 } 261 */ 262 return true; 263 } 264 265 bool TupleAssignSpotter::MultipleAssignMatcher::match( std::list< Expression * > &out ) { 266 // need more complicated matching 115 } 116 117 void TupleAssignSpotter::match() { 118 assert ( matcher != 0 ); 119 120 std::list< Expression * > new_assigns; 121 matcher->match( new_assigns ); 122 123 if ( new_assigns.empty() ) return; 124 ResolvExpr::AltList current; 125 // now resolve new assignments 126 for ( std::list< Expression * >::iterator i = new_assigns.begin(); i != new_assigns.end(); ++i ) { 127 ResolvExpr::AlternativeFinder finder( currentFinder.get_indexer(), currentFinder.get_environ() ); 128 finder.findWithAdjustment(*i); 129 // prune expressions that don't coincide with 130 ResolvExpr::AltList alts = finder.get_alternatives(); 131 assert( alts.size() == 1 ); 132 assert( alts.front().expr != 0 ); 133 current.push_back( alts.front() ); 134 } 135 136 // extract expressions from the assignment alternatives to produce a list of assignments that 137 // together form a single alternative 138 std::list< Expression *> solved_assigns; 139 for ( ResolvExpr::Alternative & alt : current ) { 140 solved_assigns.push_back( alt.expr->clone() ); 141 } 142 // xxx - need to do this?? 143 // TypeEnvironment compositeEnv; 144 // simpleCombineEnvironments( i->begin(), i->end(), compositeEnv ); 145 currentFinder.get_alternatives().push_front( ResolvExpr::Alternative(new TupleAssignExpr(solved_assigns, matcher->tmpDecls), currentFinder.get_environ(), ResolvExpr::sumCost( current ) ) ); 146 } 147 148 TupleAssignSpotter::Matcher::Matcher( TupleAssignSpotter &spotter, ResolvExpr::Alternative & lhs, ResolvExpr::Alternative & rhs ) : spotter(spotter) { 149 if (AddressExpr *addr = dynamic_cast<AddressExpr *>(lhs.expr) ) { 150 // xxx - not every assignment NEEDS to have the first argument as address-taken, e.g. a manual call to assignment. What to do in this case? skip it as a possibility for TupleAssignment, since the type will always be T*, where T can never be a tuple? Is this true? 151 152 // explode the lhs so that each field of the tuple-valued-expr is assigned. 153 ResolvExpr::Alternative lhsAlt( addr->get_arg()->clone(), lhs.env, lhs.cost, lhs.cvtCost ); 154 explode( lhsAlt, back_inserter(this->lhs) ); 155 } 156 } 157 158 TupleAssignSpotter::MassAssignMatcher::MassAssignMatcher( TupleAssignSpotter &spotter, ResolvExpr::Alternative & lhs, ResolvExpr::Alternative & rhs ) : Matcher( spotter, lhs, rhs ) { 159 this->rhs.push_back( rhs ); 160 } 161 162 TupleAssignSpotter::MultipleAssignMatcher::MultipleAssignMatcher( TupleAssignSpotter &spotter, ResolvExpr::Alternative & lhs, ResolvExpr::Alternative & rhs ) : Matcher( spotter, lhs, rhs ) { 163 164 // explode the rhs so that each field of the tuple-valued-expr is assigned. 165 explode( rhs, back_inserter(this->rhs) ); 166 } 167 168 UntypedExpr * createAssgn( ObjectDecl *left, ObjectDecl *right ) { 169 assert( left && right ); 170 std::list< Expression * > args; 171 args.push_back( new AddressExpr( new UntypedExpr( new NameExpr("*?"), std::list< Expression * >{ new VariableExpr( left ) } ) ) ); 172 args.push_back( new VariableExpr( right ) ); 173 return new UntypedExpr( new NameExpr( "?=?" ), args ); 174 } 175 176 ObjectDecl * newObject( UniqueName & namer, Expression * expr ) { 177 assert( expr->has_result() && ! expr->get_result()->isVoid() ); 178 return new ObjectDecl( namer.newName(), DeclarationNode::NoStorageClass, LinkageSpec::Cforall, nullptr, expr->get_result()->clone(), new SingleInit( expr->clone() ) ); 179 } 180 181 void TupleAssignSpotter::MassAssignMatcher::match( std::list< Expression * > &out ) { 182 static UniqueName lhsNamer( "__massassign_L" ); 183 static UniqueName rhsNamer( "__massassign_R" ); 184 assert ( ! lhs.empty() && rhs.size() == 1); 185 186 ObjectDecl * rtmp = newObject( rhsNamer, rhs.front().expr ); 187 for ( ResolvExpr::Alternative & lhsAlt : lhs ) { 188 ObjectDecl * ltmp = newObject( lhsNamer, new AddressExpr( lhsAlt.expr ) ); 189 out.push_back( createAssgn( ltmp, rtmp ) ); 190 tmpDecls.push_back( ltmp ); 191 } 192 tmpDecls.push_back( rtmp ); 193 } 194 195 void TupleAssignSpotter::MultipleAssignMatcher::match( std::list< Expression * > &out ) { 196 static UniqueName lhsNamer( "__multassign_L" ); 197 static UniqueName rhsNamer( "__multassign_R" ); 198 // xxx - need more complicated matching? 267 199 if ( lhs.size() == rhs.size() ) { 268 zipWith( lhs.begin(), lhs.end(), rhs.begin(), rhs.end(), back_inserter(out), TupleAssignSpotter::Matcher::createAssgn ); 269 return true; 270 } //else 271 //std::cerr << "The length of (left, right) is: (" << lhs.size() << "," << rhs.size() << ")" << std::endl;*/ 272 return false; 273 } 274 275 bool TupleAssignSpotter::MultipleAssignMatcher::solve( std::list< Expression * > &assigns ) { 276 /* 277 std::list< Expression * > solved_assigns; 278 ResolvExpr::AltList solved_alts; 279 assert( currentFinder != 0 ); 280 281 ResolvExpr::AltList current; 282 for ( std::list< Expression * >::iterator i = new_assigns.begin(); i != new_assigns.end(); ++i ) { 283 //try { 284 ResolvExpr::AlternativeFinder finder( currentFinder->get_indexer(), currentFinder->get_environ() ); 285 finder.findWithAdjustment(*i); 286 // prune expressions that don't coincide with 287 ResolvExpr::AltList alts = finder.get_alternatives(); 288 assert( alts.size() == 1 ); 289 assert(alts.front().expr != 0 ); 290 current.push_back( finder.get_alternatives().front() ); 291 solved_assigns.push_back( alts.front().expr->clone() ); 292 //solved_assigns.back()->print(std::cerr); 293 //} catch( ... ) { 294 //continue; // no reasonable alternative found 295 //} 296 } 297 options.add_option( current ); 298 */ 299 300 return true; 301 } 302 303 void TupleAssignSpotter::Options::add_option( ResolvExpr::AltList &opt ) { 304 using namespace std; 305 306 options.push_back( opt ); 307 /* 308 vector< Cost > costs; 309 costs.reserve( opt.size() ); 310 transform( opt.begin(), opt.end(), back_inserter(costs), ptr_fun(extract_cost) ); 311 */ 312 // transpose matrix 313 if ( costMatrix.empty() ) 314 for ( unsigned int i = 0; i< opt.size(); ++i) 315 costMatrix.push_back( vector<ResolvExpr::Cost>() ); 316 317 int cnt = 0; 318 for ( ResolvExpr::AltList::iterator i = opt.begin(); i != opt.end(); ++i, cnt++ ) 319 costMatrix[cnt].push_back( i->cost ); 320 321 return; 322 } 323 324 std::list< ResolvExpr::AltList > TupleAssignSpotter::Options::get_best() { 325 using namespace std; 326 using namespace ResolvExpr; 327 list< ResolvExpr::AltList > ret; 328 list< multiset<int> > solns; 329 for ( vector< vector<Cost> >::iterator i = costMatrix.begin(); i != costMatrix.end(); ++i ) { 330 list<int> current; 331 findMinCost( i->begin(), i->end(), back_inserter(current) ); 332 solns.push_back( multiset<int>(current.begin(), current.end()) ); 333 } 334 // need to combine 335 multiset<int> result; 336 lift_intersection( solns.begin(), solns.end(), inserter( result, result.begin() ) ); 337 if ( result.size() != 1 ) 338 throw SemanticError("Ambiguous tuple expression"); 339 ret.push_back(get_option( *(result.begin() ))); 340 return ret; 341 } 342 343 void TupleAssignSpotter::Options::print( std::ostream &ostr ) { 344 using namespace std; 345 346 for ( vector< vector < ResolvExpr::Cost > >::iterator i = costMatrix.begin(); i != costMatrix.end(); ++i ) { 347 for ( vector < ResolvExpr::Cost >::iterator j = i->begin(); j != i->end(); ++j ) 348 ostr << *j << " " ; 349 ostr << std::endl; 350 } // for 351 return; 352 } 353 354 ResolvExpr::Cost extract_cost( ResolvExpr::Alternative &alt ) { 355 return alt.cost; 356 } 357 358 template< typename InputIterator, typename OutputIterator > 359 void TupleAssignSpotter::Options::findMinCost( InputIterator begin, InputIterator end, OutputIterator out ) { 360 using namespace ResolvExpr; 361 std::list<int> alternatives; 362 363 // select the alternatives that have the minimum parameter cost 364 Cost minCost = Cost::infinity; 365 unsigned int index = 0; 366 for ( InputIterator i = begin; i != end; ++i, index++ ) { 367 if ( *i < minCost ) { 368 minCost = *i; 369 alternatives.clear(); 370 alternatives.push_back( index ); 371 } else if ( *i == minCost ) { 372 alternatives.push_back( index ); 373 } 374 } 375 std::copy( alternatives.begin(), alternatives.end(), out ); 376 } 377 378 template< class InputIterator, class OutputIterator > 379 void TupleAssignSpotter::Options::lift_intersection( InputIterator begin, InputIterator end, OutputIterator out ) { 380 if ( begin == end ) return; 381 InputIterator test = begin; 382 383 if (++test == end) 384 { copy(begin->begin(), begin->end(), out); return; } 385 386 387 std::multiset<int> cur; // InputIterator::value_type::value_type 388 copy( begin->begin(), begin->end(), inserter( cur, cur.begin() ) ); 389 390 while ( test != end ) { 391 std::multiset<int> temp; 392 set_intersection( cur.begin(), cur.end(), test->begin(), test->end(), inserter(temp,temp.begin()) ); 393 cur.clear(); 394 copy( temp.begin(), temp.end(), inserter(cur,cur.begin())); 395 ++test; 396 } 397 398 copy( cur.begin(), cur.end(), out ); 399 return; 400 } 401 402 ResolvExpr::AltList TupleAssignSpotter::Options::get_option( std::list< ResolvExpr::AltList >::size_type index ) { 403 if ( index >= options.size() ) 404 throw 0; // XXX 405 std::list< ResolvExpr::AltList >::iterator it = options.begin(); 406 for ( std::list< ResolvExpr::AltList >::size_type i = 0; i < index; ++i, ++it ); 407 return *it; 200 std::list< ObjectDecl * > ltmp; 201 std::list< ObjectDecl * > rtmp; 202 std::transform( lhs.begin(), lhs.end(), back_inserter( ltmp ), []( ResolvExpr::Alternative & alt ){ 203 return newObject( lhsNamer, new AddressExpr( alt.expr ) ); 204 }); 205 std::transform( rhs.begin(), rhs.end(), back_inserter( rtmp ), []( ResolvExpr::Alternative & alt ){ 206 return newObject( rhsNamer, alt.expr ); 207 }); 208 zipWith( ltmp.begin(), ltmp.end(), rtmp.begin(), rtmp.end(), back_inserter(out), createAssgn ); 209 tmpDecls.splice( tmpDecls.end(), ltmp ); 210 tmpDecls.splice( tmpDecls.end(), rtmp ); 211 } 408 212 } 409 213 } // namespace Tuples
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