ExplodedGraph.h revision bda1efd0daf6fca9f515c6ce38d1ed71a3cca5b7
18b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//=-- ExplodedGraph.h - Local, Path-Sens. "Exploded Graph" -*- C++ -*-------==// 28b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 38b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// The LLVM Compiler Infrastructure 48b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 58b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// This file is distributed under the University of Illinois Open Source 68b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// License. See LICENSE.TXT for details. 78b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 88b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//===----------------------------------------------------------------------===// 98b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// This file defines the template classes ExplodedNode and ExplodedGraph, 118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// which represent a path-sensitive, intra-procedural "exploded graph." 128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// See "Precise interprocedural dataflow analysis via graph reachability" 138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// by Reps, Horwitz, and Sagiv 148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// (http://portal.acm.org/citation.cfm?id=199462) for the definition of an 158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// exploded graph. 168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// 178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//===----------------------------------------------------------------------===// 188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#ifndef LLVM_CLANG_GR_EXPLODEDGRAPH 208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#define LLVM_CLANG_GR_EXPLODEDGRAPH 218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Analysis/ProgramPoint.h" 238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Analysis/AnalysisContext.h" 248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/AST/Decl.h" 258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/SmallVector.h" 265d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner#include "llvm/ADT/FoldingSet.h" 278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/SmallPtrSet.h" 288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/Support/Allocator.h" 298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/OwningPtr.h" 308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/GraphTraits.h" 318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/ADT/DepthFirstIterator.h" 328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "llvm/Support/Casting.h" 338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project#include "clang/Analysis/Support/BumpVector.h" 348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectnamespace clang { 368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectclass CFG; 388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectnamespace ento { 408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectclass GRState; 428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectclass ExplodedGraph; 438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//===----------------------------------------------------------------------===// 458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// ExplodedGraph "implementation" classes. These classes are not typed to 468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// contain a specific kind of state. Typed-specialized versions are defined 478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// on top of these classes. 488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project//===----------------------------------------------------------------------===// 498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// ExplodedNode is not constified all over the engine because we need to add 518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project// successors to it at any time after creating it. 528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectclass ExplodedNode : public llvm::FoldingSetNode { 548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class ExplodedGraph; 558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class CoreEngine; 568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class StmtNodeBuilder; 578b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class BranchNodeBuilder; 588b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class IndirectGotoNodeBuilder; 598b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class SwitchNodeBuilder; 608b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project friend class EndOfFunctionNodeBuilder; 618b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 628b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project class NodeGroup { 638b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project enum { Size1 = 0x0, SizeOther = 0x1, AuxFlag = 0x2, Mask = 0x3 }; 648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project uintptr_t P; 658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 668b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned getKind() const { 678b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return P & 0x1; 688b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 698b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void* getPtr() const { 718b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project assert (!getFlag()); 728b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return reinterpret_cast<void*>(P & ~Mask); 738b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 748b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 758b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExplodedNode *getNode() const { 768b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return reinterpret_cast<ExplodedNode*>(getPtr()); 778b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 788b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 795d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner public: 808b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project NodeGroup() : P(0) {} 818b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 828b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExplodedNode **begin() const; 838b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 848b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExplodedNode **end() const; 858b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 868b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned size() const; 878b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 888b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool empty() const { return (P & ~Mask) == 0; } 898b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 908b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void addNode(ExplodedNode* N, ExplodedGraph &G); 918b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 925d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner void setFlag() { 935d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner assert(P == 0); 948b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project P = AuxFlag; 958b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 968b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 978b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project bool getFlag() const { 988b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return P & AuxFlag ? true : false; 998b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 1008b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project }; 1018b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1028b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Location - The program location (within a function body) associated 1038b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// with this node. 1048b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const ProgramPoint Location; 1058b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1068b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// State - The state associated with this node. 1078b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const GRState* State; 1088b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1098b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Preds - The predecessors of this node. 1108b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project NodeGroup Preds; 1118b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1128b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// Succs - The successors of this node. 1138b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project NodeGroup Succs; 1148b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1158b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Projectpublic: 1168b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1178b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project explicit ExplodedNode(const ProgramPoint& loc, const GRState* state) 1188b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project : Location(loc), State(state) {} 1198b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1208b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// getLocation - Returns the edge associated with the given node. 1218b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ProgramPoint getLocation() const { return Location; } 1228b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1238b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const LocationContext *getLocationContext() const { 1248b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return getLocation().getLocationContext(); 1258b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 1268b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1278b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const Decl &getCodeDecl() const { return *getLocationContext()->getDecl(); } 1288b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1298b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project CFG &getCFG() const { return *getLocationContext()->getCFG(); } 1308b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1318b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ParentMap &getParentMap() const {return getLocationContext()->getParentMap();} 1328b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1338b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project LiveVariables &getLiveVariables() const { 1348b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return *getLocationContext()->getLiveVariables(); 1358b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 1368b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1378b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const GRState* getState() const { return State; } 1388b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1398b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project template <typename T> 1408b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const T* getLocationAs() const { return llvm::dyn_cast<T>(&Location); } 1418b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1428b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project static void Profile(llvm::FoldingSetNodeID &ID, 1438b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project const ProgramPoint& Loc, const GRState* state) { 1448b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ID.Add(Loc); 1458b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ID.AddPointer(state); 1468b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 1478b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1488b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void Profile(llvm::FoldingSetNodeID& ID) const { 1498b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project Profile(ID, getLocation(), getState()); 1508b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 1518b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1528b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// addPredeccessor - Adds a predecessor to the current node, and 1538b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project /// in tandem add this node as a successor of the other node. 1548b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project void addPredecessor(ExplodedNode* V, ExplodedGraph &G); 1558b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project 1568b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project unsigned succ_size() const { return Succs.size(); } 1575d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner unsigned pred_size() const { return Preds.size(); } 1585d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner bool succ_empty() const { return Succs.empty(); } 1595d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner bool pred_empty() const { return Preds.empty(); } 1605d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner 1615d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner bool isSink() const { return Succs.getFlag(); } 1625d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner void markAsSink() { Succs.setFlag(); } 1635d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner 1648b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project ExplodedNode* getFirstPred() { 1658b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project return pred_empty() ? NULL : *(pred_begin()); 1665d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner } 1675d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner 1685d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner const ExplodedNode* getFirstPred() const { 1695d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner return const_cast<ExplodedNode*>(this)->getFirstPred(); 1708b23a6c7e1aee255004dd19098d4c2462b61b849The Android Open Source Project } 1715d8f37ad78fc66901af50c762029a501561f3b23David 'Digit' Turner 172 // Iterators over successor and predecessor vertices. 173 typedef ExplodedNode** succ_iterator; 174 typedef const ExplodedNode* const * const_succ_iterator; 175 typedef ExplodedNode** pred_iterator; 176 typedef const ExplodedNode* const * const_pred_iterator; 177 178 pred_iterator pred_begin() { return Preds.begin(); } 179 pred_iterator pred_end() { return Preds.end(); } 180 181 const_pred_iterator pred_begin() const { 182 return const_cast<ExplodedNode*>(this)->pred_begin(); 183 } 184 const_pred_iterator pred_end() const { 185 return const_cast<ExplodedNode*>(this)->pred_end(); 186 } 187 188 succ_iterator succ_begin() { return Succs.begin(); } 189 succ_iterator succ_end() { return Succs.end(); } 190 191 const_succ_iterator succ_begin() const { 192 return const_cast<ExplodedNode*>(this)->succ_begin(); 193 } 194 const_succ_iterator succ_end() const { 195 return const_cast<ExplodedNode*>(this)->succ_end(); 196 } 197 198 // For debugging. 199 200public: 201 202 class Auditor { 203 public: 204 virtual ~Auditor(); 205 virtual void AddEdge(ExplodedNode* Src, ExplodedNode* Dst) = 0; 206 }; 207 208 static void SetAuditor(Auditor* A); 209}; 210 211// FIXME: Is this class necessary? 212class InterExplodedGraphMap { 213 llvm::DenseMap<const ExplodedNode*, ExplodedNode*> M; 214 friend class ExplodedGraph; 215 216public: 217 ExplodedNode* getMappedNode(const ExplodedNode* N) const; 218 219 InterExplodedGraphMap() {} 220 virtual ~InterExplodedGraphMap() {} 221}; 222 223class ExplodedGraph { 224protected: 225 friend class CoreEngine; 226 227 // Type definitions. 228 typedef llvm::SmallVector<ExplodedNode*,2> RootsTy; 229 typedef llvm::SmallVector<ExplodedNode*,10> EndNodesTy; 230 231 /// Roots - The roots of the simulation graph. Usually there will be only 232 /// one, but clients are free to establish multiple subgraphs within a single 233 /// SimulGraph. Moreover, these subgraphs can often merge when paths from 234 /// different roots reach the same state at the same program location. 235 RootsTy Roots; 236 237 /// EndNodes - The nodes in the simulation graph which have been 238 /// specially marked as the endpoint of an abstract simulation path. 239 EndNodesTy EndNodes; 240 241 /// Nodes - The nodes in the graph. 242 llvm::FoldingSet<ExplodedNode> Nodes; 243 244 /// BVC - Allocator and context for allocating nodes and their predecessor 245 /// and successor groups. 246 BumpVectorContext BVC; 247 248 /// NumNodes - The number of nodes in the graph. 249 unsigned NumNodes; 250 251public: 252 /// getNode - Retrieve the node associated with a (Location,State) pair, 253 /// where the 'Location' is a ProgramPoint in the CFG. If no node for 254 /// this pair exists, it is created. IsNew is set to true if 255 /// the node was freshly created. 256 257 ExplodedNode* getNode(const ProgramPoint& L, const GRState *State, 258 bool* IsNew = 0); 259 260 ExplodedGraph* MakeEmptyGraph() const { 261 return new ExplodedGraph(); 262 } 263 264 /// addRoot - Add an untyped node to the set of roots. 265 ExplodedNode* addRoot(ExplodedNode* V) { 266 Roots.push_back(V); 267 return V; 268 } 269 270 /// addEndOfPath - Add an untyped node to the set of EOP nodes. 271 ExplodedNode* addEndOfPath(ExplodedNode* V) { 272 EndNodes.push_back(V); 273 return V; 274 } 275 276 ExplodedGraph() : NumNodes(0) {} 277 278 ~ExplodedGraph() {} 279 280 unsigned num_roots() const { return Roots.size(); } 281 unsigned num_eops() const { return EndNodes.size(); } 282 283 bool empty() const { return NumNodes == 0; } 284 unsigned size() const { return NumNodes; } 285 286 // Iterators. 287 typedef ExplodedNode NodeTy; 288 typedef llvm::FoldingSet<ExplodedNode> AllNodesTy; 289 typedef NodeTy** roots_iterator; 290 typedef NodeTy* const * const_roots_iterator; 291 typedef NodeTy** eop_iterator; 292 typedef NodeTy* const * const_eop_iterator; 293 typedef AllNodesTy::iterator node_iterator; 294 typedef AllNodesTy::const_iterator const_node_iterator; 295 296 node_iterator nodes_begin() { return Nodes.begin(); } 297 298 node_iterator nodes_end() { return Nodes.end(); } 299 300 const_node_iterator nodes_begin() const { return Nodes.begin(); } 301 302 const_node_iterator nodes_end() const { return Nodes.end(); } 303 304 roots_iterator roots_begin() { return Roots.begin(); } 305 306 roots_iterator roots_end() { return Roots.end(); } 307 308 const_roots_iterator roots_begin() const { return Roots.begin(); } 309 310 const_roots_iterator roots_end() const { return Roots.end(); } 311 312 eop_iterator eop_begin() { return EndNodes.begin(); } 313 314 eop_iterator eop_end() { return EndNodes.end(); } 315 316 const_eop_iterator eop_begin() const { return EndNodes.begin(); } 317 318 const_eop_iterator eop_end() const { return EndNodes.end(); } 319 320 llvm::BumpPtrAllocator & getAllocator() { return BVC.getAllocator(); } 321 BumpVectorContext &getNodeAllocator() { return BVC; } 322 323 typedef llvm::DenseMap<const ExplodedNode*, ExplodedNode*> NodeMap; 324 325 std::pair<ExplodedGraph*, InterExplodedGraphMap*> 326 Trim(const NodeTy* const* NBeg, const NodeTy* const* NEnd, 327 llvm::DenseMap<const void*, const void*> *InverseMap = 0) const; 328 329 ExplodedGraph* TrimInternal(const ExplodedNode* const * NBeg, 330 const ExplodedNode* const * NEnd, 331 InterExplodedGraphMap *M, 332 llvm::DenseMap<const void*, const void*> *InverseMap) const; 333}; 334 335class ExplodedNodeSet { 336 typedef llvm::SmallPtrSet<ExplodedNode*,5> ImplTy; 337 ImplTy Impl; 338 339public: 340 ExplodedNodeSet(ExplodedNode* N) { 341 assert (N && !static_cast<ExplodedNode*>(N)->isSink()); 342 Impl.insert(N); 343 } 344 345 ExplodedNodeSet() {} 346 347 inline void Add(ExplodedNode* N) { 348 if (N && !static_cast<ExplodedNode*>(N)->isSink()) Impl.insert(N); 349 } 350 351 ExplodedNodeSet& operator=(const ExplodedNodeSet &X) { 352 Impl = X.Impl; 353 return *this; 354 } 355 356 typedef ImplTy::iterator iterator; 357 typedef ImplTy::const_iterator const_iterator; 358 359 unsigned size() const { return Impl.size(); } 360 bool empty() const { return Impl.empty(); } 361 362 void clear() { Impl.clear(); } 363 void insert(const ExplodedNodeSet &S) { 364 if (empty()) 365 Impl = S.Impl; 366 else 367 Impl.insert(S.begin(), S.end()); 368 } 369 370 inline iterator begin() { return Impl.begin(); } 371 inline iterator end() { return Impl.end(); } 372 373 inline const_iterator begin() const { return Impl.begin(); } 374 inline const_iterator end() const { return Impl.end(); } 375}; 376 377} // end GR namespace 378 379} // end clang namespace 380 381// GraphTraits 382 383namespace llvm { 384 template<> struct GraphTraits<clang::ento::ExplodedNode*> { 385 typedef clang::ento::ExplodedNode NodeType; 386 typedef NodeType::succ_iterator ChildIteratorType; 387 typedef llvm::df_iterator<NodeType*> nodes_iterator; 388 389 static inline NodeType* getEntryNode(NodeType* N) { 390 return N; 391 } 392 393 static inline ChildIteratorType child_begin(NodeType* N) { 394 return N->succ_begin(); 395 } 396 397 static inline ChildIteratorType child_end(NodeType* N) { 398 return N->succ_end(); 399 } 400 401 static inline nodes_iterator nodes_begin(NodeType* N) { 402 return df_begin(N); 403 } 404 405 static inline nodes_iterator nodes_end(NodeType* N) { 406 return df_end(N); 407 } 408 }; 409 410 template<> struct GraphTraits<const clang::ento::ExplodedNode*> { 411 typedef const clang::ento::ExplodedNode NodeType; 412 typedef NodeType::const_succ_iterator ChildIteratorType; 413 typedef llvm::df_iterator<NodeType*> nodes_iterator; 414 415 static inline NodeType* getEntryNode(NodeType* N) { 416 return N; 417 } 418 419 static inline ChildIteratorType child_begin(NodeType* N) { 420 return N->succ_begin(); 421 } 422 423 static inline ChildIteratorType child_end(NodeType* N) { 424 return N->succ_end(); 425 } 426 427 static inline nodes_iterator nodes_begin(NodeType* N) { 428 return df_begin(N); 429 } 430 431 static inline nodes_iterator nodes_end(NodeType* N) { 432 return df_end(N); 433 } 434 }; 435 436} // end llvm namespace 437 438#endif 439