CoreEngine.h revision a19f4af7a94835ce4693bfe12d6270754e79eb56
1d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis//==- CoreEngine.h - Path-Sensitive Dataflow Engine ----------------*- C++ -*-// 21eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump// 3f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// The LLVM Compiler Infrastructure 4f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// 5f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// This file is distributed under the University of Illinois Open Source 6f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// License. See LICENSE.TXT for details. 7f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// 8f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek//===----------------------------------------------------------------------===// 9f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// 10f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// This file defines a generic engine for intraprocedural, path-sensitive, 118e49dd6e7e73b275a74338a5127a524f0765303cTed Kremenek// dataflow analysis via graph reachability. 12f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek// 13f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek//===----------------------------------------------------------------------===// 14f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek 15d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis#ifndef LLVM_CLANG_GR_COREENGINE 16d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis#define LLVM_CLANG_GR_COREENGINE 17f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek 1899c6ad3f22b865d0f4cce52bc36904403c9ed4c4Ted Kremenek#include "clang/AST/Expr.h" 199b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ExplodedGraph.h" 209b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/WorkList.h" 219b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/BlockCounter.h" 22f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek#include "llvm/ADT/OwningPtr.h" 23f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek 24f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremeneknamespace clang { 250111f575b968e423dccae439e501225b8314b257Zhongxing Xu 26ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenekclass ProgramPointTag; 27ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek 289ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremeneknamespace ento { 295a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 30a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaksclass NodeBuilder; 31a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks 3224f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek//===----------------------------------------------------------------------===// 33d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// CoreEngine - Implements the core logic of the graph-reachability 34922059dec59c7bed235da01aff75ae522a369811Ted Kremenek/// analysis. It traverses the CFG and generates the ExplodedGraph. 35922059dec59c7bed235da01aff75ae522a369811Ted Kremenek/// Program "states" are treated as opaque void pointers. 36d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis/// The template class CoreEngine (which subclasses CoreEngine) 37922059dec59c7bed235da01aff75ae522a369811Ted Kremenek/// provides the matching component to the engine that knows the actual types 38922059dec59c7bed235da01aff75ae522a369811Ted Kremenek/// for states. Note that this engine only dispatches to transfer functions 39922059dec59c7bed235da01aff75ae522a369811Ted Kremenek/// at the statement and block-level. The analyses themselves must implement 40922059dec59c7bed235da01aff75ae522a369811Ted Kremenek/// any transfer function logic and the sub-expression level (if any). 41d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisclass CoreEngine { 42f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks friend class CommonNodeBuilder; 43f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks friend class NodeBuilder; 44d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class StmtNodeBuilder; 4527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek friend class GenericNodeBuilderImpl; 46d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class BranchNodeBuilder; 47d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class IndirectGotoNodeBuilder; 48d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class SwitchNodeBuilder; 49e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek friend class EndOfFunctionNodeBuilder; 50d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class CallEnterNodeBuilder; 51d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class CallExitNodeBuilder; 520111f575b968e423dccae439e501225b8314b257Zhongxing Xu 53a7a8a450d908b34fa5f569f2e694ebd4b61aae2fTom Carepublic: 54a7a8a450d908b34fa5f569f2e694ebd4b61aae2fTom Care typedef std::vector<std::pair<BlockEdge, const ExplodedNode*> > 5566750fa464ace9f8c41666c8585ec71a248c1ccaTed Kremenek BlocksExhausted; 56422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek 57422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek typedef std::vector<std::pair<const CFGBlock*, const ExplodedNode*> > 58422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek BlocksAborted; 59422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek 60a7a8a450d908b34fa5f569f2e694ebd4b61aae2fTom Careprivate: 61a7a8a450d908b34fa5f569f2e694ebd4b61aae2fTom Care 62d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis SubEngine& SubEng; 630111f575b968e423dccae439e501225b8314b257Zhongxing Xu 64f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek /// G - The simulation graph. Each node is a (location,state) pair. 6538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu llvm::OwningPtr<ExplodedGraph> G; 661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 67f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek /// WList - A set of queued nodes that need to be processed by the 68f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek /// worklist algorithm. It is up to the implementation of WList to decide 69f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek /// the order that nodes are processed. 70d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis WorkList* WList; 711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 72d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis /// BCounterFactory - A factory object for created BlockCounter objects. 738e49dd6e7e73b275a74338a5127a524f0765303cTed Kremenek /// These are used to record for key nodes in the ExplodedGraph the 748e49dd6e7e73b275a74338a5127a524f0765303cTed Kremenek /// number of times different CFGBlocks have been visited along a path. 75d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis BlockCounter::Factory BCounterFactory; 76f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek 77f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek /// The locations where we stopped doing work because we visited a location 78f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek /// too many times. 7966750fa464ace9f8c41666c8585ec71a248c1ccaTed Kremenek BlocksExhausted blocksExhausted; 80422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek 81422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek /// The locations where we stopped because the engine aborted analysis, 82422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek /// usually because it could not reason about something. 83422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek BlocksAborted blocksAborted; 841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek void generateNode(const ProgramPoint &Loc, 8618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *State, 879c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred); 881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 899c378f705405d37f49795d5e915989de774fe11fTed Kremenek void HandleBlockEdge(const BlockEdge &E, ExplodedNode *Pred); 909c378f705405d37f49795d5e915989de774fe11fTed Kremenek void HandleBlockEntrance(const BlockEntrance &E, ExplodedNode *Pred); 919c378f705405d37f49795d5e915989de774fe11fTed Kremenek void HandleBlockExit(const CFGBlock *B, ExplodedNode *Pred); 929c378f705405d37f49795d5e915989de774fe11fTed Kremenek void HandlePostStmt(const CFGBlock *B, unsigned StmtIdx, ExplodedNode *Pred); 931eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 949c378f705405d37f49795d5e915989de774fe11fTed Kremenek void HandleBranch(const Stmt *Cond, const Stmt *Term, const CFGBlock *B, 959c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred); 96102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor void HandleCallEnter(const CallEnter &L, const CFGBlock *Block, 97102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor unsigned Index, ExplodedNode *Pred); 98102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor void HandleCallExit(const CallExit &L, ExplodedNode *Pred); 990111f575b968e423dccae439e501225b8314b257Zhongxing Xu 100f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenekprivate: 101d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine(const CoreEngine&); // Do not implement. 102d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine& operator=(const CoreEngine&); 1031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 104f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenekpublic: 105d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis /// Construct a CoreEngine object to analyze the provided CFG using 1060111f575b968e423dccae439e501225b8314b257Zhongxing Xu /// a DFS exploration of the exploded graph. 107d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine(SubEngine& subengine) 108d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis : SubEng(subengine), G(new ExplodedGraph()), 10955825aa2d88fe82bf3622f195046ae48532d3106Ted Kremenek WList(WorkList::makeBFS()), 110f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek BCounterFactory(G->getAllocator()) {} 1110111f575b968e423dccae439e501225b8314b257Zhongxing Xu 112d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis /// Construct a CoreEngine object to analyze the provided CFG and to 1130111f575b968e423dccae439e501225b8314b257Zhongxing Xu /// use the provided worklist object to execute the worklist algorithm. 114d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis /// The CoreEngine object assumes ownership of 'wlist'. 115d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine(WorkList* wlist, SubEngine& subengine) 116d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis : SubEng(subengine), G(new ExplodedGraph()), WList(wlist), 117f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek BCounterFactory(G->getAllocator()) {} 1180111f575b968e423dccae439e501225b8314b257Zhongxing Xu 119d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ~CoreEngine() { 1200111f575b968e423dccae439e501225b8314b257Zhongxing Xu delete WList; 1210111f575b968e423dccae439e501225b8314b257Zhongxing Xu } 1220111f575b968e423dccae439e501225b8314b257Zhongxing Xu 1230111f575b968e423dccae439e501225b8314b257Zhongxing Xu /// getGraph - Returns the exploded graph. 124031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedGraph& getGraph() { return *G.get(); } 1251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1260111f575b968e423dccae439e501225b8314b257Zhongxing Xu /// takeGraph - Returns the exploded graph. Ownership of the graph is 127fc8f0e14ad142ed811e90fbd9a30e419e301c717Chris Lattner /// transferred to the caller. 128031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ExplodedGraph* takeGraph() { return G.take(); } 1290111f575b968e423dccae439e501225b8314b257Zhongxing Xu 130f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek /// ExecuteWorkList - Run the worklist algorithm for a maximum number of 131f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek /// steps. Returns true if there is still simulation state on the worklist. 1322ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu bool ExecuteWorkList(const LocationContext *L, unsigned Steps, 13318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *InitState); 13418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek void ExecuteWorkListWithInitialState(const LocationContext *L, 13518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek unsigned Steps, 13618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *InitState, 1372ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu ExplodedNodeSet &Dst); 138bc42c533e7d3d946704a49e242939dd232f33072Tom Care 139bc42c533e7d3d946704a49e242939dd232f33072Tom Care // Functions for external checking of whether we have unfinished work 140422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek bool wasBlockAborted() const { return !blocksAborted.empty(); } 141422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek bool wasBlocksExhausted() const { return !blocksExhausted.empty(); } 142422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek bool hasWorkRemaining() const { return wasBlocksExhausted() || 143422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek WList->hasWork() || 144422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek wasBlockAborted(); } 145422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek 146422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek /// Inform the CoreEngine that a basic block was aborted because 147422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek /// it could not be completely analyzed. 148422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek void addAbortedBlock(const ExplodedNode *node, const CFGBlock *block) { 149422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek blocksAborted.push_back(std::make_pair(block, node)); 150422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek } 151422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek 152d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis WorkList *getWorkList() const { return WList; } 153f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek 154422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek BlocksExhausted::const_iterator blocks_exhausted_begin() const { 15566750fa464ace9f8c41666c8585ec71a248c1ccaTed Kremenek return blocksExhausted.begin(); 156f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek } 157422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek BlocksExhausted::const_iterator blocks_exhausted_end() const { 15866750fa464ace9f8c41666c8585ec71a248c1ccaTed Kremenek return blocksExhausted.end(); 159f598087b4adfea164acdd5b53ea2951bde740a2dTed Kremenek } 160422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek BlocksAborted::const_iterator blocks_aborted_begin() const { 161422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek return blocksAborted.begin(); 162422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek } 163422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek BlocksAborted::const_iterator blocks_aborted_end() const { 164422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek return blocksAborted.end(); 165422ab7a49a9a4252dbc6350e49d7a5708337b9c7Ted Kremenek } 166a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks 167a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks /// Enqueue the results of the node builder onto the work list. 168a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks void enqueue(NodeBuilder &NB); 169a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks}; 170a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks 171a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaksstruct NodeBuilderContext { 172a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks CoreEngine &Eng; 173a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks ExplodedNode *Pred; 174a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *Block; 175a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext(CoreEngine &E, ExplodedNode *N, const CFGBlock *B) 176a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks : Eng(E), Pred(N), Block(B) { assert(B); assert(!N->isSink()); } 177f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek}; 1781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 179f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks/// This is the simplest builder which generates nodes in the ExplodedGraph. 180f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaksclass NodeBuilder { 181a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaksprotected: 182f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks friend class StmtNodeBuilder; 183f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 184a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilderContext &C; 185f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks bool Finalized; 186f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 187f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks /// \brief The frontier set - a set of nodes which need to be propagated after 188f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks /// the builder dies. 189f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks typedef llvm::SmallPtrSet<ExplodedNode*,5> DeferredTy; 190f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks DeferredTy Deferred; 19171fdf469a3b6d7d557b0bfba36e8659f4966c565Anna Zaks 192a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks BlockCounter getBlockCounter() const { return C.Eng.WList->getBlockCounter();} 193a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks 194a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks bool checkResults() { 195a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks if (!Finalized) 196a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return false; 197a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks for (DeferredTy::iterator I=Deferred.begin(), E=Deferred.end(); I!=E; ++I) 198a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks if ((*I)->isSink()) 199a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return false; 200a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return true; 201a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks } 202f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 203f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks virtual void finalizeResults() { 204f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks if (!Finalized) { 205f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks Finalized = true; 206f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks } 207f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks } 208f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 209f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks ExplodedNode *generateNodeImpl(const ProgramPoint &PP, 210f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks const ProgramState *State, 211f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks ExplodedNode *Pred, 212f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks bool MarkAsSink = false); 213f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 214f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zakspublic: 215a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks NodeBuilder(NodeBuilderContext &Ctx) 216a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks : C(Ctx), Finalized(false) { Deferred.insert(C.Pred); } 217a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks 218a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks virtual ~NodeBuilder() {} 219f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 220f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks /// \brief Generates a node in the ExplodedGraph. 221f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks /// 222f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks /// When a node is marked as sink, the exploration from the node is stopped - 223f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks /// the node becomes the last node on the path. 224f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks ExplodedNode *generateNode(const ProgramPoint &PP, 225f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks const ProgramState *State, 226f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks ExplodedNode *Pred, 227f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks bool MarkAsSink = false) { 228f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks return generateNodeImpl(PP, State, Pred, MarkAsSink); 229f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks } 230f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 231f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks // \brief Get the builder's predecessor - the parent to all the other nodes. 232a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const ExplodedNode *getPred() const { return C.Pred; } 233f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 234f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks bool hasGeneratedNodes() const { 235a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return (!Deferred.count(C.Pred)); 236f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks } 237f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 238f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks typedef DeferredTy::iterator iterator; 239f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks /// \brief Iterators through the results frontier. 240a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks inline iterator results_begin() { 241a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks finalizeResults(); 242a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks assert(checkResults()); 243a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return Deferred.begin(); 244a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks } 245a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks inline iterator results_end() { 246a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks finalizeResults(); 247a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return Deferred.end(); 248a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks } 249f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 250a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks /// \brief Returns the number of times the current basic block has been 251a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks /// visited on the exploded graph path. 252a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks unsigned getCurrentBlockCount() const { 253a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return getBlockCounter().getNumVisited( 254a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks C.Pred->getLocationContext()->getCurrentStackFrame(), 255a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks C.Block->getBlockID()); 256a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks } 257a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks 258a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks ExplodedNode *getPredecessor() const { return C.Pred; } 259f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks}; 260f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 261f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaksclass CommonNodeBuilder { 262f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaksprotected: 263f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks ExplodedNode *Pred; 264f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zakspublic: 265f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks // TODO: make protected. 266f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks CoreEngine& Eng; 267f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 268f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks CommonNodeBuilder(CoreEngine* E, ExplodedNode *P) : Pred(P), Eng(*E) {} 269f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks BlockCounter getBlockCounter() const { return Eng.WList->getBlockCounter(); } 270f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks}; 271f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 272f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 273f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaksclass StmtNodeBuilder: public CommonNodeBuilder { 274f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks const CFGBlock &B; 275f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks const unsigned Idx; 276031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 277031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xupublic: 278031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu bool PurgingDeadSymbols; 279031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu bool BuildSinks; 280b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek bool hasGeneratedNode; 281031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu ProgramPoint::Kind PointKind; 282ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *Tag; 2831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 284c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef llvm::SmallPtrSet<ExplodedNode*,5> DeferredTy; 285f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek DeferredTy Deferred; 2861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2879c378f705405d37f49795d5e915989de774fe11fTed Kremenek void GenerateAutoTransition(ExplodedNode *N); 2881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 289f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenekpublic: 29018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek StmtNodeBuilder(const CFGBlock *b, 29118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek unsigned idx, 29218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *N, 29371fdf469a3b6d7d557b0bfba36e8659f4966c565Anna Zaks CoreEngine* e); 2941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 295d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis ~StmtNodeBuilder(); 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2979c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *getPredecessor() const { return Pred; } 298f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 29900a3a5f024ac54088ab887712b292171188064f0Ted Kremenek unsigned getCurrentBlockCount() const { 300d9e0c0fc47d5881a609ec34372d554e3652db66cZhongxing Xu return getBlockCounter().getNumVisited( 301d9e0c0fc47d5881a609ec34372d554e3652db66cZhongxing Xu Pred->getLocationContext()->getCurrentStackFrame(), 302d9e0c0fc47d5881a609ec34372d554e3652db66cZhongxing Xu B.getBlockID()); 3031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 304031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 30518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateNode(const Stmt *S, 30618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *St, 30718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *Pred, 30818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ProgramPoint::Kind K, 309ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag = 0) { 310b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek hasGeneratedNode = true; 311031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 3121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump if (PurgingDeadSymbols) 3131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump K = ProgramPoint::PostPurgeDeadSymbolsKind; 314031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 3154bac726dadb09ee38bab8147f1e706380368b362Ted Kremenek return generateNodeInternal(S, St, Pred, K, tag ? tag : Tag); 316031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu } 3171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 31818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateNode(const Stmt *S, 31918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *St, 320ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek ExplodedNode *Pred, 321ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag = 0) { 3224bac726dadb09ee38bab8147f1e706380368b362Ted Kremenek return generateNode(S, St, Pred, PointKind, tag); 323031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu } 324031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 32518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateNode(const ProgramPoint &PP, 32618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *State, 3279c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred) { 328b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek hasGeneratedNode = true; 329102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor return generateNodeInternal(PP, State, Pred); 330102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor } 331102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 332c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu ExplodedNode* 33318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek generateNodeInternal(const ProgramPoint &PP, 33418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *State, 3359c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred); 3361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 337c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu ExplodedNode* 33818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek generateNodeInternal(const Stmt *S, 33918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *State, 34018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *Pred, 34115e24065a4a8b6b9d58e138969f8f6ac7495d837Anna Zaks ProgramPoint::Kind K, 34218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramPointTag *tag = 0); 3431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 344331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek /// getStmt - Return the current block-level expression associated with 345331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek /// this builder. 3469c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Stmt *getStmt() const { 3473c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek const CFGStmt *CS = B[Idx].getAs<CFGStmt>(); 3483c0349e87cdbd7316d06d2411d86ee1086e717a5Ted Kremenek return CS ? CS->getStmt() : 0; 349b36cd3e1757fb4fcd9509f35558c847b04bef35fZhongxing Xu } 3501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 351331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek /// getBlock - Return the CFGBlock associated with the block-level expression 352331b0ac44b9eb0ffcba66b4f3f3f9adb27c2434fTed Kremenek /// of this builder. 3539c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *getBlock() const { return &B; } 354bdb435ddaafd5069becd543d638112f68825b89dTed Kremenek 355598278bee8e5797bc73d24d6ac8a1d6ff6413caeZhongxing Xu unsigned getIndex() const { return Idx; } 356598278bee8e5797bc73d24d6ac8a1d6ff6413caeZhongxing Xu 35718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *MakeNode(ExplodedNodeSet &Dst, 35818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const Stmt *S, 35918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *Pred, 36018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *St) { 361bf4e419d996bf42e4933cada610d973a0fcc40ebTed Kremenek return MakeNode(Dst, S, Pred, St, PointKind); 362bf4e419d996bf42e4933cada610d973a0fcc40ebTed Kremenek } 3631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 36418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *MakeNode(ExplodedNodeSet &Dst, 36518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const Stmt *S, 36618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *Pred, 36718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *St, 36818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ProgramPoint::Kind K); 3691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 37018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *MakeSinkNode(ExplodedNodeSet &Dst, 37118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const Stmt *S, 37218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *Pred, 37318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *St) { 37470a733e64e2379a654631a14fa29e46761d5f80dTed Kremenek bool Tmp = BuildSinks; 37570a733e64e2379a654631a14fa29e46761d5f80dTed Kremenek BuildSinks = true; 3769c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *N = MakeNode(Dst, S, Pred, St); 37770a733e64e2379a654631a14fa29e46761d5f80dTed Kremenek BuildSinks = Tmp; 37870a733e64e2379a654631a14fa29e46761d5f80dTed Kremenek return N; 37970a733e64e2379a654631a14fa29e46761d5f80dTed Kremenek } 380f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks 381f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks void importNodesFromBuilder(const NodeBuilder &NB) { 382f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks ExplodedNode *NBPred = const_cast<ExplodedNode*>(NB.getPred()); 383f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks if (NB.hasGeneratedNodes()) { 384f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks Deferred.erase(NBPred); 385f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks Deferred.insert(NB.Deferred.begin(), NB.Deferred.end()); 386f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks hasGeneratedNode = true; 387f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks } 388f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks } 389f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek}; 3901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 391a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaksclass BranchNodeBuilder: public NodeBuilder { 3929c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *DstT; 3939c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *DstF; 39452a16499df87730c0252b431abdf2b2e32d756a6Ted Kremenek 39571c29bdc931bc49644c581ec7d698f0dbf01a0aaTed Kremenek bool GeneratedTrue; 39671c29bdc931bc49644c581ec7d698f0dbf01a0aaTed Kremenek bool GeneratedFalse; 397520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek bool InFeasibleTrue; 398520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek bool InFeasibleFalse; 3991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 400a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks void finalizeResults() { 401a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks if (Finalized) 402a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks return; 403a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks if (!GeneratedTrue) generateNode(C.Pred->State, true); 404a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks if (!GeneratedFalse) generateNode(C.Pred->State, false); 405a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks Finalized = true; 406a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks } 407a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks 4087d7fe6d539b3bdb1701835223cca306c325614a7Ted Kremenekpublic: 409a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks BranchNodeBuilder(NodeBuilderContext &C, const CFGBlock *dstT, 410a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const CFGBlock *dstF) 411a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks : NodeBuilder(C), DstT(dstT), DstF(dstF), 412520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek GeneratedTrue(false), GeneratedFalse(false), 413a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks InFeasibleTrue(!DstT), InFeasibleFalse(!DstF) { 414a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks } 415031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 416a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks /// This function generate a new ExplodedNode but not a new 417a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks /// branch(block edge). Creates a transition from the Builder's top 418a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks /// predecessor. 419f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks ExplodedNode *generateNode(const Stmt *Condition, const ProgramState *State, 420a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks const ProgramPointTag *Tag = 0, 421a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks bool MarkAsSink = false); 4228083414ee7cc8f5c807ed6a4e120fb4e0ab50ff8Ted Kremenek 423a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks ExplodedNode *generateNode(const ProgramState *State, bool branch, 424a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks ExplodedNode *Pred = 0); 4251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4269c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *getTargetBlock(bool branch) const { 4278e49dd6e7e73b275a74338a5127a524f0765303cTed Kremenek return branch ? DstT : DstF; 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 4291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 43052a16499df87730c0252b431abdf2b2e32d756a6Ted Kremenek void markInfeasible(bool branch) { 431520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek if (branch) 432520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek InFeasibleTrue = GeneratedTrue = true; 433520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek else 434520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek InFeasibleFalse = GeneratedFalse = true; 435520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek } 4361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 437520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek bool isFeasible(bool branch) { 438520035439d7133064325c4df6378c5a8f2f05539Ted Kremenek return branch ? !InFeasibleTrue : !InFeasibleFalse; 43952a16499df87730c0252b431abdf2b2e32d756a6Ted Kremenek } 4401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 44118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *getState() const { 442b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek return getPredecessor()->getState(); 443b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek } 4447d7fe6d539b3bdb1701835223cca306c325614a7Ted Kremenek}; 445031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 446d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisclass IndirectGotoNodeBuilder { 447d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine& Eng; 4489c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *Src; 4499c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock &DispatchBlock; 4509c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *E; 4519c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred; 452031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 453754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenekpublic: 4549c378f705405d37f49795d5e915989de774fe11fTed Kremenek IndirectGotoNodeBuilder(ExplodedNode *pred, const CFGBlock *src, 4559c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *e, const CFGBlock *dispatch, CoreEngine* eng) 45603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu : Eng(*eng), Src(src), DispatchBlock(*dispatch), E(e), Pred(pred) {} 457754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 458031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu class iterator { 45903509aea098772644bf4662dc1c88634818ceeccZhongxing Xu CFGBlock::const_succ_iterator I; 4601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 461d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class IndirectGotoNodeBuilder; 46203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu iterator(CFGBlock::const_succ_iterator i) : I(i) {} 463754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek public: 4641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4659c378f705405d37f49795d5e915989de774fe11fTed Kremenek iterator &operator++() { ++I; return *this; } 4669c378f705405d37f49795d5e915989de774fe11fTed Kremenek bool operator!=(const iterator &X) const { return I != X.I; } 4671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 468ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *getLabel() const { 469ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner return llvm::cast<LabelStmt>((*I)->getLabel())->getDecl(); 47024f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek } 4711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 472ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const CFGBlock *getBlock() const { 47324f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek return *I; 47424f1a967741ff9f8025ee23be12ba6feacc31f77Ted Kremenek } 475754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek }; 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 477031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu iterator begin() { return iterator(DispatchBlock.succ_begin()); } 478031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu iterator end() { return iterator(DispatchBlock.succ_end()); } 4791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 48018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateNode(const iterator &I, 48118c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *State, 482031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu bool isSink = false); 4831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4849c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *getTarget() const { return E; } 485754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 48618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *getState() const { return Pred->State; } 487754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek}; 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 489d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisclass SwitchNodeBuilder { 490d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine& Eng; 4919c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *Src; 4929c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *Condition; 4939c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *Pred; 494031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 495daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenekpublic: 4969c378f705405d37f49795d5e915989de774fe11fTed Kremenek SwitchNodeBuilder(ExplodedNode *pred, const CFGBlock *src, 4979c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *condition, CoreEngine* eng) 498daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek : Eng(*eng), Src(src), Condition(condition), Pred(pred) {} 4991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 500031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu class iterator { 50103509aea098772644bf4662dc1c88634818ceeccZhongxing Xu CFGBlock::const_succ_reverse_iterator I; 5021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 503d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class SwitchNodeBuilder; 50403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu iterator(CFGBlock::const_succ_reverse_iterator i) : I(i) {} 505031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu 506daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek public: 5079c378f705405d37f49795d5e915989de774fe11fTed Kremenek iterator &operator++() { ++I; return *this; } 50834feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool operator!=(const iterator &X) const { return I != X.I; } 50934feff654c6304e0a59ceb1376989d28dbc956ffTed Kremenek bool operator==(const iterator &X) const { return I == X.I; } 5101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5119c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CaseStmt *getCase() const { 512daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return llvm::cast<CaseStmt>((*I)->getLabel()); 513daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 5141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5159c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *getBlock() const { 516daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek return *I; 517daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek } 518daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek }; 5191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 520031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu iterator begin() { return iterator(Src->succ_rbegin()+1); } 521031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu iterator end() { return iterator(Src->succ_rend()); } 5221eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5234d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek const SwitchStmt *getSwitch() const { 5244d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek return llvm::cast<SwitchStmt>(Src->getTerminator()); 5254d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek } 5264d3175c1e5a44251ea97b0c81e80f060629d9c08Ted Kremenek 52718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateCaseStmtNode(const iterator &I, 52818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *State); 5291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 53018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateDefaultCaseNode(const ProgramState *State, 531031ccc0555a82afc2e8afe29e19dd57ff204e2deZhongxing Xu bool isSink = false); 5321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5339c378f705405d37f49795d5e915989de774fe11fTed Kremenek const Expr *getCondition() const { return Condition; } 534daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek 53518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *getState() const { return Pred->State; } 536daeb9a7376830d637e02b5bc51faf4750a7bce70Ted Kremenek}; 53711062b118476368fa5b294954713e5df97d8599fTed Kremenek 53827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekclass GenericNodeBuilderImpl { 53927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekprotected: 54027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek CoreEngine &engine; 54127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek ExplodedNode *pred; 54227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek ProgramPoint pp; 543686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<ExplodedNode*, 2> sinksGenerated; 54427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 54518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateNodeImpl(const ProgramState *state, 54618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *pred, 54718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ProgramPoint programPoint, 54818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek bool asSink); 54927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 55027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek GenericNodeBuilderImpl(CoreEngine &eng, ExplodedNode *pr, ProgramPoint p) 551b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek : engine(eng), pred(pr), pp(p), hasGeneratedNode(false) {} 55227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 55327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekpublic: 554b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek bool hasGeneratedNode; 55527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 55627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek WorkList &getWorkList() { return *engine.WList; } 55727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 5589c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *getPredecessor() const { return pred; } 55927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 56027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek BlockCounter getBlockCounter() const { 56127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek return engine.WList->getBlockCounter(); 56227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 56327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 564686775deca8b8685eb90801495880e3abdd844c2Chris Lattner const SmallVectorImpl<ExplodedNode*> &sinks() const { 56527c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek return sinksGenerated; 56627c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 56727c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek}; 56827c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 569b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenektemplate <typename PP_T> 57027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekclass GenericNodeBuilder : public GenericNodeBuilderImpl { 57127c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenekpublic: 572b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek GenericNodeBuilder(CoreEngine &eng, ExplodedNode *pr, const PP_T &p) 57327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek : GenericNodeBuilderImpl(eng, pr, p) {} 57427c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 57518c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateNode(const ProgramState *state, ExplodedNode *pred, 576ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag, bool asSink) { 577b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek return generateNodeImpl(state, pred, cast<PP_T>(pp).withTag(tag), 578b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek asSink); 57927c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek } 58027c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 581b6a2b08a6b3fbce1a6a4b69d4185165de970696cTed Kremenek const PP_T &getProgramPoint() const { return cast<PP_T>(pp); } 58227c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek}; 58327c54e57c4a012dcdf2b40cf985b70d0b9caa69eTed Kremenek 584f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaksclass EndOfFunctionNodeBuilder : public CommonNodeBuilder { 5859c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock &B; 586ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *Tag; 587f605aae3227ffa3a5dae8eb34fdd79ba0a0d19d1Zhongxing Xu 588f605aae3227ffa3a5dae8eb34fdd79ba0a0d19d1Zhongxing Xupublic: 589b4857264b8d3d861f688cdaa174aab30e0729a73Ted Kremenek bool hasGeneratedNode; 5901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 59111062b118476368fa5b294954713e5df97d8599fTed Kremenekpublic: 5929c378f705405d37f49795d5e915989de774fe11fTed Kremenek EndOfFunctionNodeBuilder(const CFGBlock *b, ExplodedNode *N, CoreEngine* e, 593ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag = 0) 594f05aac8472d8ed081a361a218fd14d59ddc91b85Anna Zaks : CommonNodeBuilder(e, N), B(*b), Tag(tag), hasGeneratedNode(false) {} 5951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 596e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek ~EndOfFunctionNodeBuilder(); 5971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 598ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek EndOfFunctionNodeBuilder withCheckerTag(const ProgramPointTag *tag) { 599f178ac8b68b29e44867777232ba8fee59edc4037Argyrios Kyrtzidis return EndOfFunctionNodeBuilder(&B, Pred, &Eng, tag); 600f178ac8b68b29e44867777232ba8fee59edc4037Argyrios Kyrtzidis } 601f178ac8b68b29e44867777232ba8fee59edc4037Argyrios Kyrtzidis 602d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis WorkList &getWorkList() { return *Eng.WList; } 603598278bee8e5797bc73d24d6ac8a1d6ff6413caeZhongxing Xu 6049c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *getPredecessor() const { return Pred; } 6051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 60611062b118476368fa5b294954713e5df97d8599fTed Kremenek unsigned getCurrentBlockCount() const { 607d9e0c0fc47d5881a609ec34372d554e3652db66cZhongxing Xu return getBlockCounter().getNumVisited( 608d9e0c0fc47d5881a609ec34372d554e3652db66cZhongxing Xu Pred->getLocationContext()->getCurrentStackFrame(), 609d9e0c0fc47d5881a609ec34372d554e3652db66cZhongxing Xu B.getBlockID()); 6101eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 6111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 61218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *generateNode(const ProgramState *State, 61318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek ExplodedNode *P = 0, 614ca804539d908d3a0e8c72a0df5f1f571d29490bbTed Kremenek const ProgramPointTag *tag = 0); 6151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 61618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek void GenerateCallExitNode(const ProgramState *state); 617102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 6189c378f705405d37f49795d5e915989de774fe11fTed Kremenek const CFGBlock *getBlock() const { return &B; } 61911062b118476368fa5b294954713e5df97d8599fTed Kremenek 62018c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *getState() const { 62111062b118476368fa5b294954713e5df97d8599fTed Kremenek return getPredecessor()->getState(); 62211062b118476368fa5b294954713e5df97d8599fTed Kremenek } 62311062b118476368fa5b294954713e5df97d8599fTed Kremenek}; 624754607e7cff2d902d9af8b771409449fb2f8d2bfTed Kremenek 625d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisclass CallEnterNodeBuilder { 626d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine &Eng; 627102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 628102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const ExplodedNode *Pred; 629102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 63019b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu // The call site. For implicit automatic object dtor, this is the trigger 63119b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu // statement. 632102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const Stmt *CE; 633102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 63419b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu // The context of the callee. 63519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *CalleeCtx; 636102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 637102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor // The parent block of the CallExpr. 638102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const CFGBlock *Block; 639102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 640102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor // The CFGBlock index of the CallExpr. 641102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor unsigned Index; 642102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 643102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregorpublic: 644d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CallEnterNodeBuilder(CoreEngine &eng, const ExplodedNode *pred, 64519b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const Stmt *s, const StackFrameContext *callee, 646102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const CFGBlock *blk, unsigned idx) 647c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu : Eng(eng), Pred(pred), CE(s), CalleeCtx(callee), Block(blk), Index(idx) {} 648102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 64918c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *getState() const { return Pred->getState(); } 650102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 651102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const LocationContext *getLocationContext() const { 652102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor return Pred->getLocationContext(); 653102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor } 654102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 655102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const Stmt *getCallExpr() const { return CE; } 656102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 65719b78d9e3dbbc27bbcbdd8c3017a00fe88849ecdZhongxing Xu const StackFrameContext *getCalleeContext() const { return CalleeCtx; } 658102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 659102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const CFGBlock *getBlock() const { return Block; } 660102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 661102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor unsigned getIndex() const { return Index; } 662102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 66318c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek void generateNode(const ProgramState *state); 664102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor}; 665102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 666d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidisclass CallExitNodeBuilder { 667d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CoreEngine &Eng; 668102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const ExplodedNode *Pred; 669102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 670102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregorpublic: 671d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis CallExitNodeBuilder(CoreEngine &eng, const ExplodedNode *pred) 672102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor : Eng(eng), Pred(pred) {} 673102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 674102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor const ExplodedNode *getPredecessor() const { return Pred; } 675102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 67618c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek const ProgramState *getState() const { return Pred->getState(); } 677102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor 67818c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek void generateNode(const ProgramState *state); 679102acd5369bbb17c0d6ab868af376671acff7a93Douglas Gregor}; 6805a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 6815a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis} // end GR namespace 6825a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 683f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek} // end clang namespace 684f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek 685f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek#endif 686