151125a21eafc29c925cac3655b46cfd8ef55f764Ted Kremenek//=-- ExplodedGraph.h - Local, Path-Sens. "Exploded Graph" -*- C++ -*-------==// 24241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// 34241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// The LLVM Compiler Infrastructure 44241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// 54241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// This file is distributed under the University of Illinois Open Source 64241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// License. See LICENSE.TXT for details. 74241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// 84241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek//===----------------------------------------------------------------------===// 94241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// 1051125a21eafc29c925cac3655b46cfd8ef55f764Ted Kremenek// This file defines the template classes ExplodedNode and ExplodedGraph, 1151125a21eafc29c925cac3655b46cfd8ef55f764Ted Kremenek// which represent a path-sensitive, intra-procedural "exploded graph." 12b2213dc3dd8f58b611b91d2fce4834a767efcba7Jeffrey Yasskin// See "Precise interprocedural dataflow analysis via graph reachability" 13b2213dc3dd8f58b611b91d2fce4834a767efcba7Jeffrey Yasskin// by Reps, Horwitz, and Sagiv 14b2213dc3dd8f58b611b91d2fce4834a767efcba7Jeffrey Yasskin// (http://portal.acm.org/citation.cfm?id=199462) for the definition of an 15b2213dc3dd8f58b611b91d2fce4834a767efcba7Jeffrey Yasskin// exploded graph. 164241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek// 174241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek//===----------------------------------------------------------------------===// 184241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 19176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines#ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_EXPLODEDGRAPH_H 20176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines#define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_EXPLODEDGRAPH_H 214241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 2263bbe5312cd89ce0ceb684bff68c5baef636e93cTed Kremenek#include "clang/AST/Decl.h" 2330a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Analysis/AnalysisContext.h" 2430a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Analysis/ProgramPoint.h" 2530a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/Analysis/Support/BumpVector.h" 2630a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h" 2730a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/DepthFirstIterator.h" 284241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek#include "llvm/ADT/FoldingSet.h" 2930a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/GraphTraits.h" 30f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek#include "llvm/ADT/SmallPtrSet.h" 3130a2e16f6c27f888dd11eba6bbbae1e980078fcbChandler Carruth#include "llvm/ADT/SmallVector.h" 324241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek#include "llvm/Support/Allocator.h" 3363bbe5312cd89ce0ceb684bff68c5baef636e93cTed Kremenek#include "llvm/Support/Casting.h" 34651f13cea278ec967336033dd032faef0e9fc2ecStephen Hines#include <memory> 35626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek#include <vector> 364241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 374241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremeneknamespace clang { 384a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 3911062b118476368fa5b294954713e5df97d8599fTed Kremenekclass CFG; 405a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 419ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremeneknamespace ento { 425a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 435fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenekclass ExplodedGraph; 4411062b118476368fa5b294954713e5df97d8599fTed Kremenek 45cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 46cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek// ExplodedGraph "implementation" classes. These classes are not typed to 47cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek// contain a specific kind of state. Typed-specialized versions are defined 48cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek// on top of these classes. 49cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek//===----------------------------------------------------------------------===// 501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 51bda1efd0daf6fca9f515c6ce38d1ed71a3cca5b7Zhongxing Xu// ExplodedNode is not constified all over the engine because we need to add 52bda1efd0daf6fca9f515c6ce38d1ed71a3cca5b7Zhongxing Xu// successors to it at any time after creating it. 53bda1efd0daf6fca9f515c6ce38d1ed71a3cca5b7Zhongxing Xu 54c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xuclass ExplodedNode : public llvm::FoldingSetNode { 5538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu friend class ExplodedGraph; 56d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class CoreEngine; 57a19f4af7a94835ce4693bfe12d6270754e79eb56Anna Zaks friend class NodeBuilder; 58d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class BranchNodeBuilder; 59d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class IndirectGotoNodeBuilder; 60d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class SwitchNodeBuilder; 61e36de1fe51c39d9161915dd3dbef880954af6476Ted Kremenek friend class EndOfFunctionNodeBuilder; 621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 631833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// Efficiently stores a list of ExplodedNodes, or an optional flag. 641833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// 651833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// NodeGroup provides opaque storage for a list of ExplodedNodes, optimizing 661833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// for the case when there is only one node in the group. This is a fairly 671833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// common case in an ExplodedGraph, where most nodes have only one 681833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// predecessor and many have only one successor. It can also be used to 691833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// store a flag rather than a node list, which ExplodedNode uses to mark 701833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// whether a node is a sink. If the flag is set, the group is implicitly 711833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// empty and no nodes may be added. 724c4cb527a44037d076da82ad9d12b4e655e64dbbTed Kremenek class NodeGroup { 7346e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose // Conceptually a discriminated union. If the low bit is set, the node is 7446e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose // a sink. If the low bit is not set, the pointer refers to the storage 7546e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose // for the nodes in the group. 761833d284346b9fa11aae4e6aa07381347c04745cJordan Rose // This is not a PointerIntPair in order to keep the storage type opaque. 774c4cb527a44037d076da82ad9d12b4e655e64dbbTed Kremenek uintptr_t P; 78d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 794c4cb527a44037d076da82ad9d12b4e655e64dbbTed Kremenek public: 8046e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose NodeGroup(bool Flag = false) : P(Flag) { 8146e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose assert(getFlag() == Flag); 8246e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose } 831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8446e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose ExplodedNode * const *begin() const; 851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 8646e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose ExplodedNode * const *end() const; 871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 885d5480380d7b7c3590a0283ddf239220e514e576Ted Kremenek unsigned size() const; 891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 9046e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose bool empty() const { return P == 0 || getFlag() != 0; } 911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 921833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// Adds a node to the list. 931833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// 941833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// The group must not have been created with its flag set. 959c378f705405d37f49795d5e915989de774fe11fTed Kremenek void addNode(ExplodedNode *N, ExplodedGraph &G); 961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 971833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// Replaces the single node in this group with a new node. 981833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// 991833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// Note that this should only be used when you know the group was not 1001833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// created with its flag set, and that the group is empty or contains 1011833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// only a single node. 102d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek void replaceNode(ExplodedNode *node); 103d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 1041833d284346b9fa11aae4e6aa07381347c04745cJordan Rose /// Returns whether this group was created with its flag set. 105b38911f16b4943548db6a3695fc6ae23070b25d2Ted Kremenek bool getFlag() const { 10646e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose return (P & 1); 107f24af5bc2e01ca8e7396ed997378a77fddfa521eTed Kremenek } 1081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump }; 1091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1104a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek /// Location - The program location (within a function body) associated 1114a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek /// with this node. 1124a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const ProgramPoint Location; 1131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1144323a57627e796dcfdfdb7d47672dc09ed308edaTed Kremenek /// State - The state associated with this node. 1158bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef State; 1161eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1174a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek /// Preds - The predecessors of this node. 1184c4cb527a44037d076da82ad9d12b4e655e64dbbTed Kremenek NodeGroup Preds; 1191eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1204a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek /// Succs - The successors of this node. 1214c4cb527a44037d076da82ad9d12b4e655e64dbbTed Kremenek NodeGroup Succs; 122c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1234a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenekpublic: 124c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1255204d9e2fe0ea4e4b9c85087e355021c93221764Jordan Rose explicit ExplodedNode(const ProgramPoint &loc, ProgramStateRef state, 1266800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks bool IsSink) 12746e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose : Location(loc), State(state), Succs(IsSink) { 12846e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose assert(isSink() == IsSink); 129e40b69de464bc695afcaf7ef9602ad727d77b981Ted Kremenek } 130c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1314a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek /// getLocation - Returns the edge associated with the given node. 1320f9063c116b7c3b05d8042b5976463c2dae04861Ted Kremenek ProgramPoint getLocation() const { return Location; } 133c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const LocationContext *getLocationContext() const { 1351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return getLocation().getLocationContext(); 13625e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu } 13725e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu 138955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks const StackFrameContext *getStackFrame() const { 139955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks return getLocationContext()->getCurrentStackFrame(); 140955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks } 141955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks 1425032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu const Decl &getCodeDecl() const { return *getLocationContext()->getDecl(); } 1435032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu 1445032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu CFG &getCFG() const { return *getLocationContext()->getCFG(); } 1455032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu 146b317f8f5ca8737a5bbad97a3f7566a2dbd2ed61bZhongxing Xu ParentMap &getParentMap() const {return getLocationContext()->getParentMap();} 147b317f8f5ca8737a5bbad97a3f7566a2dbd2ed61bZhongxing Xu 148a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek template <typename T> 149a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek T &getAnalysis() const { 150a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek return *getLocationContext()->getAnalysis<T>(); 151c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu } 152c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1530a6e09f67c719c318856be19d57e19972101f62cJordan Rose const ProgramStateRef &getState() const { return State; } 154b317f8f5ca8737a5bbad97a3f7566a2dbd2ed61bZhongxing Xu 15552c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek template <typename T> 1567a95de68c093991047ed8d339479ccad51b88663David Blaikie Optional<T> getLocationAs() const LLVM_LVALUE_FUNCTION { 1577a95de68c093991047ed8d339479ccad51b88663David Blaikie return Location.getAs<T>(); 158dcd42fbb418cf662c136cb035e235a44b58ad91eJordan Rose } 159dcd42fbb418cf662c136cb035e235a44b58ad91eJordan Rose 1601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump static void Profile(llvm::FoldingSetNodeID &ID, 1616800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks const ProgramPoint &Loc, 1621831bd29572b6a7243da73d9606209190c0217deBenjamin Kramer const ProgramStateRef &state, 1636800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks bool IsSink) { 1645fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek ID.Add(Loc); 165c568f1e98938584c0ef0b12ae5018ff7d90a4072Stephen Hines ID.AddPointer(state.get()); 1666800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks ID.AddBoolean(IsSink); 1675fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek } 168c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 169c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu void Profile(llvm::FoldingSetNodeID& ID) const { 170fbe4d36f1f83ca12b532e0a946cbffcdb54f904cJordan Rose // We avoid copy constructors by not using accessors. 171fbe4d36f1f83ca12b532e0a946cbffcdb54f904cJordan Rose Profile(ID, Location, State, isSink()); 172c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu } 173c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// addPredeccessor - Adds a predecessor to the current node, and 175c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu /// in tandem add this node as a successor of the other node. 1769c378f705405d37f49795d5e915989de774fe11fTed Kremenek void addPredecessor(ExplodedNode *V, ExplodedGraph &G); 177c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1784a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek unsigned succ_size() const { return Succs.size(); } 1794a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek unsigned pred_size() const { return Preds.size(); } 1804a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek bool succ_empty() const { return Succs.empty(); } 1810e8a3c743b9b3e3039e329a1736122d3b5b5fed9Ted Kremenek bool pred_empty() const { return Preds.empty(); } 1821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 183ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek bool isSink() const { return Succs.getFlag(); } 1844a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 185cacdbc97d11d2bbde00a63dace6ac26f4b12ed88Craig Topper bool hasSinglePred() const { 1865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return (pred_size() == 1); 1875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 1885903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1899c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *getFirstPred() { 1906bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return pred_empty() ? nullptr : *(pred_begin()); 19152c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek } 1921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1939c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *getFirstPred() const { 19452c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek return const_cast<ExplodedNode*>(this)->getFirstPred(); 19552c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek } 1961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1970f8579274a010f360a371b53101859d9d6052314Anna Zaks const ExplodedNode *getFirstSucc() const { 1986bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines return succ_empty() ? nullptr : *(succ_begin()); 1990f8579274a010f360a371b53101859d9d6052314Anna Zaks } 2000f8579274a010f360a371b53101859d9d6052314Anna Zaks 2014a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek // Iterators over successor and predecessor vertices. 20246e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose typedef ExplodedNode* const * succ_iterator; 2033148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek typedef const ExplodedNode* const * const_succ_iterator; 20446e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose typedef ExplodedNode* const * pred_iterator; 2053148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek typedef const ExplodedNode* const * const_pred_iterator; 2064a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 207c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu pred_iterator pred_begin() { return Preds.begin(); } 208c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu pred_iterator pred_end() { return Preds.end(); } 2094a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 2104a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_pred_iterator pred_begin() const { 2114a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->pred_begin(); 2121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2134a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_pred_iterator pred_end() const { 2144a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->pred_end(); 2154a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 2164a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 217c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu succ_iterator succ_begin() { return Succs.begin(); } 218c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu succ_iterator succ_end() { return Succs.end(); } 2194a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 2204a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_succ_iterator succ_begin() const { 2214a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->succ_begin(); 2224a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 2234a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_succ_iterator succ_end() const { 2244a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->succ_end(); 2254a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 226c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 227c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu // For debugging. 2281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 229c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xupublic: 2301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 231c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu class Auditor { 232c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu public: 233c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu virtual ~Auditor(); 2349c378f705405d37f49795d5e915989de774fe11fTed Kremenek virtual void AddEdge(ExplodedNode *Src, ExplodedNode *Dst) = 0; 235c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu }; 2361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 237c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu static void SetAuditor(Auditor* A); 238d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 239d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenekprivate: 240d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek void replaceSuccessor(ExplodedNode *node) { Succs.replaceNode(node); } 241d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek void replacePredecessor(ExplodedNode *node) { Preds.replaceNode(node); } 242c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu}; 243c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 244c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rosetypedef llvm::DenseMap<const ExplodedNode *, const ExplodedNode *> 245c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose InterExplodedGraphMap; 2464a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 24738b02b912e1a55c912f603c4369431264d36a381Zhongxing Xuclass ExplodedGraph { 2484241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenekprotected: 249d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class CoreEngine; 250e96de2dfde487211fb52f9139cdcae64d051a406Zhongxing Xu 2514241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek // Type definitions. 252626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef std::vector<ExplodedNode *> NodeVector; 2531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 254626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek /// The roots of the simulation graph. Usually there will be only 2554241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// one, but clients are free to establish multiple subgraphs within a single 2564241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// SimulGraph. Moreover, these subgraphs can often merge when paths from 2574241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// different roots reach the same state at the same program location. 258626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek NodeVector Roots; 2594241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 260626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek /// The nodes in the simulation graph which have been 261626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek /// specially marked as the endpoint of an abstract simulation path. 262626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek NodeVector EndNodes; 26338b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 26438b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu /// Nodes - The nodes in the graph. 26538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu llvm::FoldingSet<ExplodedNode> Nodes; 26638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 2675fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek /// BVC - Allocator and context for allocating nodes and their predecessor 2685fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek /// and successor groups. 2695fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek BumpVectorContext BVC; 2701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27139b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek /// NumNodes - The number of nodes in the graph. 27239b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek unsigned NumNodes; 273d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 274d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// A list of recently allocated nodes that can potentially be recycled. 2752ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek NodeVector ChangedNodes; 276d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 277d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// A list of nodes that can be reused. 278626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek NodeVector FreeNodes; 279d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 2804d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose /// Determines how often nodes are reclaimed. 2814d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose /// 2824d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose /// If this is 0, nodes will never be reclaimed. 2834d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose unsigned ReclaimNodeInterval; 2842ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek 2852ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek /// Counter to determine when to reclaim nodes. 2864d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose unsigned ReclaimCounter; 2874241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 28838b02b912e1a55c912f603c4369431264d36a381Zhongxing Xupublic: 2896800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks 2906800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks /// \brief Retrieve the node associated with a (Location,State) pair, 29138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu /// where the 'Location' is a ProgramPoint in the CFG. If no node for 2926800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks /// this pair exists, it is created. IsNew is set to true if 29338b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu /// the node was freshly created. 2948bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ExplodedNode *getNode(const ProgramPoint &L, ProgramStateRef State, 2956800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks bool IsSink = false, 2966bcf27bb9a4b5c3f79cb44c0e4654a6d7619ad89Stephen Hines bool* IsNew = nullptr); 2971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 298176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines std::unique_ptr<ExplodedGraph> MakeEmptyGraph() const { 299176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines return llvm::make_unique<ExplodedGraph>(); 30038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu } 3014a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 3024241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// addRoot - Add an untyped node to the set of roots. 3039c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *addRoot(ExplodedNode *V) { 304ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek Roots.push_back(V); 305ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek return V; 306ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek } 3074241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 3084241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// addEndOfPath - Add an untyped node to the set of EOP nodes. 3099c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *addEndOfPath(ExplodedNode *V) { 310ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek EndNodes.push_back(V); 311ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek return V; 312ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek } 31338b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 3149d0064e802e81d0833e8ccab8978b17c0bac3625Ted Kremenek ExplodedGraph(); 3154a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 316d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek ~ExplodedGraph(); 317d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 3184241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek unsigned num_roots() const { return Roots.size(); } 3194a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek unsigned num_eops() const { return EndNodes.size(); } 3201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 32139b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek bool empty() const { return NumNodes == 0; } 32239b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek unsigned size() const { return NumNodes; } 323c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 3244241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek // Iterators. 32538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef ExplodedNode NodeTy; 32638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef llvm::FoldingSet<ExplodedNode> AllNodesTy; 327626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::iterator roots_iterator; 328626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::const_iterator const_roots_iterator; 329626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::iterator eop_iterator; 330626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::const_iterator const_eop_iterator; 33138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef AllNodesTy::iterator node_iterator; 33238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef AllNodesTy::const_iterator const_node_iterator; 3331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33438b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu node_iterator nodes_begin() { return Nodes.begin(); } 3357ebde953bb050caa69f791fc1de449d435c6a36fTed Kremenek 33638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu node_iterator nodes_end() { return Nodes.end(); } 3371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33838b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_node_iterator nodes_begin() const { return Nodes.begin(); } 3391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_node_iterator nodes_end() const { return Nodes.end(); } 3411eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu roots_iterator roots_begin() { return Roots.begin(); } 3431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34438b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu roots_iterator roots_end() { return Roots.end(); } 3451eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_roots_iterator roots_begin() const { return Roots.begin(); } 3471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_roots_iterator roots_end() const { return Roots.end(); } 3494241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 35038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu eop_iterator eop_begin() { return EndNodes.begin(); } 3511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu eop_iterator eop_end() { return EndNodes.end(); } 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35438b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_eop_iterator eop_begin() const { return EndNodes.begin(); } 3551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_eop_iterator eop_end() const { return EndNodes.end(); } 35738b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 3585fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek llvm::BumpPtrAllocator & getAllocator() { return BVC.getAllocator(); } 3595fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek BumpVectorContext &getNodeAllocator() { return BVC; } 36038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 36138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef llvm::DenseMap<const ExplodedNode*, ExplodedNode*> NodeMap; 36238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 363c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// Creates a trimmed version of the graph that only contains paths leading 364c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// to the given nodes. 365c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// 366c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// \param Nodes The nodes which must appear in the final graph. Presumably 367c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// these are end-of-path nodes (i.e. they have no successors). 368c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// \param[out] ForwardMap A optional map from nodes in this graph to nodes in 369c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// the returned graph. 370c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// \param[out] InverseMap An optional map from nodes in the returned graph to 371c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// nodes in this graph. 372c9963132736782d0c9178c744b3e2307cfb98a08Jordan Rose /// \returns The trimmed graph 373176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines std::unique_ptr<ExplodedGraph> 374176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines trim(ArrayRef<const NodeTy *> Nodes, 375176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines InterExplodedGraphMap *ForwardMap = nullptr, 376176edba5311f6eff0cad2631449885ddf4fbc9eaStephen Hines InterExplodedGraphMap *InverseMap = nullptr) const; 377d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 378d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// Enable tracking of recently allocated nodes for potential reclamation 3792ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek /// when calling reclaimRecentlyAllocatedNodes(). 3804d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose void enableNodeReclamation(unsigned Interval) { 3814d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose ReclaimCounter = ReclaimNodeInterval = Interval; 3824d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose } 383d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 384d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// Reclaim "uninteresting" nodes created since the last time this method 385d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// was called. 3862ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek void reclaimRecentlyAllocatedNodes(); 387841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenek 3884e9c0854382d37325771b50f6cf899a75119fa24Ted Kremenek /// \brief Returns true if nodes for the given expression kind are always 3894e9c0854382d37325771b50f6cf899a75119fa24Ted Kremenek /// kept around. 3904e9c0854382d37325771b50f6cf899a75119fa24Ted Kremenek static bool isInterestingLValueExpr(const Expr *Ex); 3914e9c0854382d37325771b50f6cf899a75119fa24Ted Kremenek 392841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenekprivate: 393841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenek bool shouldCollect(const ExplodedNode *node); 394841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenek void collectNode(ExplodedNode *node); 3954241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek}; 396cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek 397f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenekclass ExplodedNodeSet { 398c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef llvm::SmallPtrSet<ExplodedNode*,5> ImplTy; 399f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek ImplTy Impl; 4001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 401f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenekpublic: 4029c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet(ExplodedNode *N) { 403c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu assert (N && !static_cast<ExplodedNode*>(N)->isSink()); 404f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek Impl.insert(N); 405f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek } 4061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 407f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek ExplodedNodeSet() {} 4081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4099c378f705405d37f49795d5e915989de774fe11fTed Kremenek inline void Add(ExplodedNode *N) { 410c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu if (N && !static_cast<ExplodedNode*>(N)->isSink()) Impl.insert(N); 411f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek } 4121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 413c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef ImplTy::iterator iterator; 414c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef ImplTy::const_iterator const_iterator; 415f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek 416fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek unsigned size() const { return Impl.size(); } 417fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek bool empty() const { return Impl.empty(); } 4181aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks bool erase(ExplodedNode *N) { return Impl.erase(N); } 419fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek 420fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek void clear() { Impl.clear(); } 421fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek void insert(const ExplodedNodeSet &S) { 4222d950b15b2b2b650b102ecf0c6b50b45e0cb6a8aAnna Zaks assert(&S != this); 423fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek if (empty()) 424fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek Impl = S.Impl; 425fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek else 426fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek Impl.insert(S.begin(), S.end()); 427fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek } 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 429f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline iterator begin() { return Impl.begin(); } 430f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline iterator end() { return Impl.end(); } 4311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 432f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline const_iterator begin() const { return Impl.begin(); } 433f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline const_iterator end() const { return Impl.end(); } 4341eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 4351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4365a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis} // end GR namespace 4375a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 4384241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek} // end clang namespace 4394241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 4404a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek// GraphTraits 4414a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 4424a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremeneknamespace llvm { 4439ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek template<> struct GraphTraits<clang::ento::ExplodedNode*> { 4449ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek typedef clang::ento::ExplodedNode NodeType; 445c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef NodeType::succ_iterator ChildIteratorType; 4464a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek typedef llvm::df_iterator<NodeType*> nodes_iterator; 4471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4484a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline NodeType* getEntryNode(NodeType* N) { 4494a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N; 4504a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4524a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) { 4534a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_begin(); 4544a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4551eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4564a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) { 4574a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_end(); 4584a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4604a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_begin(NodeType* N) { 4614a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_begin(N); 4624a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4644a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_end(NodeType* N) { 4654a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_end(N); 4664a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4674a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek }; 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4699ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek template<> struct GraphTraits<const clang::ento::ExplodedNode*> { 4709ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek typedef const clang::ento::ExplodedNode NodeType; 471c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef NodeType::const_succ_iterator ChildIteratorType; 4724a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek typedef llvm::df_iterator<NodeType*> nodes_iterator; 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4744a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline NodeType* getEntryNode(NodeType* N) { 4754a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N; 4764a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4771eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4784a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) { 4794a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_begin(); 4804a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4824a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) { 4834a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_end(); 4844a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4864a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_begin(NodeType* N) { 4874a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_begin(N); 4884a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4904a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_end(NodeType* N) { 4914a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_end(N); 4924a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4934a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek }; 4941eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4954a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek} // end llvm namespace 4964a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 4974241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek#endif 498