ExplodedGraph.h revision 4d9e497a2b1eab3b1214848216050c64fc3acfd6
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 195a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis#ifndef LLVM_CLANG_GR_EXPLODEDGRAPH 205a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis#define LLVM_CLANG_GR_EXPLODEDGRAPH 214241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 224a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek#include "clang/Analysis/ProgramPoint.h" 231309f9a3b225ea846e5822691c39a77423125505Ted Kremenek#include "clang/Analysis/AnalysisContext.h" 2463bbe5312cd89ce0ceb684bff68c5baef636e93cTed Kremenek#include "clang/AST/Decl.h" 254241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek#include "llvm/ADT/SmallVector.h" 264241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek#include "llvm/ADT/FoldingSet.h" 27f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek#include "llvm/ADT/SmallPtrSet.h" 284241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek#include "llvm/Support/Allocator.h" 29ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek#include "llvm/ADT/OwningPtr.h" 304a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek#include "llvm/ADT/GraphTraits.h" 314a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek#include "llvm/ADT/DepthFirstIterator.h" 3263bbe5312cd89ce0ceb684bff68c5baef636e93cTed Kremenek#include "llvm/Support/Casting.h" 335fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek#include "clang/Analysis/Support/BumpVector.h" 3418c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h" 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 1258bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek 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 } 130e40b69de464bc695afcaf7ef9602ad727d77b981Ted Kremenek 131a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis ~ExplodedNode() {} 132c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1334a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek /// getLocation - Returns the edge associated with the given node. 1340f9063c116b7c3b05d8042b5976463c2dae04861Ted Kremenek ProgramPoint getLocation() const { return Location; } 135c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const LocationContext *getLocationContext() const { 1371eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return getLocation().getLocationContext(); 13825e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu } 13925e695b2d574d919cc1bbddf3a2efe073d449b1cZhongxing Xu 140955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks const StackFrameContext *getStackFrame() const { 141955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks return getLocationContext()->getCurrentStackFrame(); 142955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks } 143955cd444f445bcdbade1cdd3926254c8ee7890d8Anna Zaks 1445032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu const Decl &getCodeDecl() const { return *getLocationContext()->getDecl(); } 1455032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu 1465032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu CFG &getCFG() const { return *getLocationContext()->getCFG(); } 1475032ffe4259e7d436f2eb19e5a29fdae559e7c12Zhongxing Xu 148b317f8f5ca8737a5bbad97a3f7566a2dbd2ed61bZhongxing Xu ParentMap &getParentMap() const {return getLocationContext()->getParentMap();} 149b317f8f5ca8737a5bbad97a3f7566a2dbd2ed61bZhongxing Xu 150a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek template <typename T> 151a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek T &getAnalysis() const { 152a5937bbfd19e61d651a58b0f0ffeef68457902a5Ted Kremenek return *getLocationContext()->getAnalysis<T>(); 153c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu } 154c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1558bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ProgramStateRef getState() const { return State; } 156b317f8f5ca8737a5bbad97a3f7566a2dbd2ed61bZhongxing Xu 15752c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek template <typename T> 15852c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek const T* getLocationAs() const { return llvm::dyn_cast<T>(&Location); } 159c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 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); 165a5888f61be9f8d76e9b48a453dbced50523bd2e0Argyrios Kyrtzidis ID.AddPointer(state.getPtr()); 1666800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks ID.AddBoolean(IsSink); 1675fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek } 168c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 169c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu void Profile(llvm::FoldingSetNodeID& ID) const { 1706800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks Profile(ID, getLocation(), getState(), isSink()); 171c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu } 172c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// addPredeccessor - Adds a predecessor to the current node, and 174c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu /// in tandem add this node as a successor of the other node. 1759c378f705405d37f49795d5e915989de774fe11fTed Kremenek void addPredecessor(ExplodedNode *V, ExplodedGraph &G); 176c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 1774a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek unsigned succ_size() const { return Succs.size(); } 1784a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek unsigned pred_size() const { return Preds.size(); } 1794a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek bool succ_empty() const { return Succs.empty(); } 1800e8a3c743b9b3e3039e329a1736122d3b5b5fed9Ted Kremenek bool pred_empty() const { return Preds.empty(); } 1811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 182ffe0f43806d4823271c2406c1fccc2373115c36aTed Kremenek bool isSink() const { return Succs.getFlag(); } 1834a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 1845903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks bool hasSinglePred() const { 1855903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks return (pred_size() == 1); 1865903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks } 1875903a373db3d27794c90b25687e0dd6adb0e497dAnna Zaks 1889c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *getFirstPred() { 18952c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek return pred_empty() ? NULL : *(pred_begin()); 19052c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek } 1911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1929c378f705405d37f49795d5e915989de774fe11fTed Kremenek const ExplodedNode *getFirstPred() const { 19352c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek return const_cast<ExplodedNode*>(this)->getFirstPred(); 19452c3196a89a26cebcf069dd140c3396b743b8e33Ted Kremenek } 1951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1964a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek // Iterators over successor and predecessor vertices. 19746e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose typedef ExplodedNode* const * succ_iterator; 1983148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek typedef const ExplodedNode* const * const_succ_iterator; 19946e778145c56cd9b42cb399795a294b29cb78b62Jordan Rose typedef ExplodedNode* const * pred_iterator; 2003148eb4a75f70f2636075c364d03104223f004d3Ted Kremenek typedef const ExplodedNode* const * const_pred_iterator; 2014a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 202c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu pred_iterator pred_begin() { return Preds.begin(); } 203c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu pred_iterator pred_end() { return Preds.end(); } 2044a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 2054a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_pred_iterator pred_begin() const { 2064a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->pred_begin(); 2071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 2084a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_pred_iterator pred_end() const { 2094a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->pred_end(); 2104a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 2114a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 212c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu succ_iterator succ_begin() { return Succs.begin(); } 213c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu succ_iterator succ_end() { return Succs.end(); } 2144a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 2154a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_succ_iterator succ_begin() const { 2164a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->succ_begin(); 2174a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 2184a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek const_succ_iterator succ_end() const { 2194a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return const_cast<ExplodedNode*>(this)->succ_end(); 2204a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 221c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 222c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu // For debugging. 2231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 224c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xupublic: 2251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 226c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu class Auditor { 227c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu public: 228c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu virtual ~Auditor(); 2299c378f705405d37f49795d5e915989de774fe11fTed Kremenek virtual void AddEdge(ExplodedNode *Src, ExplodedNode *Dst) = 0; 230c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu }; 2311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 232c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu static void SetAuditor(Auditor* A); 233d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 234d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenekprivate: 235d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek void replaceSuccessor(ExplodedNode *node) { Succs.replaceNode(node); } 236d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek void replacePredecessor(ExplodedNode *node) { Preds.replaceNode(node); } 237c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu}; 238c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 23938b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu// FIXME: Is this class necessary? 24038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xuclass InterExplodedGraphMap { 24199ba9e3bd70671f3441fb974895f226a83ce0e66David Blaikie virtual void anchor(); 24238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu llvm::DenseMap<const ExplodedNode*, ExplodedNode*> M; 2431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump friend class ExplodedGraph; 244c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 24538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xupublic: 2469c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *getMappedNode(const ExplodedNode *N) const; 2471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2487177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar InterExplodedGraphMap() {} 24938b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu virtual ~InterExplodedGraphMap() {} 2504a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek}; 2514a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 25238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xuclass ExplodedGraph { 2534241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenekprotected: 254d2592a34a059e7cbb2b11dc53649ac4912422909Argyrios Kyrtzidis friend class CoreEngine; 255e96de2dfde487211fb52f9139cdcae64d051a406Zhongxing Xu 2564241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek // Type definitions. 257626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef std::vector<ExplodedNode *> NodeVector; 2581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 259626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek /// The roots of the simulation graph. Usually there will be only 2604241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// one, but clients are free to establish multiple subgraphs within a single 2614241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// SimulGraph. Moreover, these subgraphs can often merge when paths from 2624241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// different roots reach the same state at the same program location. 263626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek NodeVector Roots; 2644241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 265626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek /// The nodes in the simulation graph which have been 266626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek /// specially marked as the endpoint of an abstract simulation path. 267626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek NodeVector EndNodes; 26838b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 26938b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu /// Nodes - The nodes in the graph. 27038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu llvm::FoldingSet<ExplodedNode> Nodes; 27138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 2725fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek /// BVC - Allocator and context for allocating nodes and their predecessor 2735fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek /// and successor groups. 2745fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek BumpVectorContext BVC; 2751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 27639b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek /// NumNodes - The number of nodes in the graph. 27739b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek unsigned NumNodes; 278d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 279d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// A list of recently allocated nodes that can potentially be recycled. 2802ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek NodeVector ChangedNodes; 281d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 282d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// A list of nodes that can be reused. 283626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek NodeVector FreeNodes; 284d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 2854d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose /// Determines how often nodes are reclaimed. 2864d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose /// 2874d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose /// If this is 0, nodes will never be reclaimed. 2884d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose unsigned ReclaimNodeInterval; 2892ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek 2902ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek /// Counter to determine when to reclaim nodes. 2914d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose unsigned ReclaimCounter; 2924241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 29338b02b912e1a55c912f603c4369431264d36a381Zhongxing Xupublic: 2946800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks 2956800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks /// \brief Retrieve the node associated with a (Location,State) pair, 29638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu /// where the 'Location' is a ProgramPoint in the CFG. If no node for 2976800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks /// this pair exists, it is created. IsNew is set to true if 29838b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu /// the node was freshly created. 2998bef8238181a30e52dea380789a7e2d760eac532Ted Kremenek ExplodedNode *getNode(const ProgramPoint &L, ProgramStateRef State, 3006800ba622e4edf287801ac69c42c61e7e294b06bAnna Zaks bool IsSink = false, 30138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu bool* IsNew = 0); 3021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 30338b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu ExplodedGraph* MakeEmptyGraph() const { 304c77a55126fcad66fb086f8e100a494caa2496a2dZhongxing Xu return new ExplodedGraph(); 30538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu } 3064a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 3074241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// addRoot - Add an untyped node to the set of roots. 3089c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *addRoot(ExplodedNode *V) { 309ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek Roots.push_back(V); 310ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek return V; 311ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek } 3124241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 3134241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek /// addEndOfPath - Add an untyped node to the set of EOP nodes. 3149c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNode *addEndOfPath(ExplodedNode *V) { 315ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek EndNodes.push_back(V); 316ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek return V; 317ede5a4ba111f0590879670b6cb07f4d6d0bd9075Ted Kremenek } 31838b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 3199d0064e802e81d0833e8ccab8978b17c0bac3625Ted Kremenek ExplodedGraph(); 3204a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 321d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek ~ExplodedGraph(); 322d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 3234241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek unsigned num_roots() const { return Roots.size(); } 3244a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek unsigned num_eops() const { return EndNodes.size(); } 3251eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 32639b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek bool empty() const { return NumNodes == 0; } 32739b4c6c98d391b25c376782cf92346aa88c96f7eTed Kremenek unsigned size() const { return NumNodes; } 328c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu 3294241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek // Iterators. 33038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef ExplodedNode NodeTy; 33138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef llvm::FoldingSet<ExplodedNode> AllNodesTy; 332626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::iterator roots_iterator; 333626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::const_iterator const_roots_iterator; 334626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::iterator eop_iterator; 335626719bd2c09e27fe7c182724a812d27f59e3819Ted Kremenek typedef NodeVector::const_iterator const_eop_iterator; 33638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef AllNodesTy::iterator node_iterator; 33738b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef AllNodesTy::const_iterator const_node_iterator; 3381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 33938b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu node_iterator nodes_begin() { return Nodes.begin(); } 3407ebde953bb050caa69f791fc1de449d435c6a36fTed Kremenek 34138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu node_iterator nodes_end() { return Nodes.end(); } 3421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34338b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_node_iterator nodes_begin() const { return Nodes.begin(); } 3441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_node_iterator nodes_end() const { return Nodes.end(); } 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34738b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu roots_iterator roots_begin() { return Roots.begin(); } 3481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 34938b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu roots_iterator roots_end() { return Roots.end(); } 3501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_roots_iterator roots_begin() const { return Roots.begin(); } 3521eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump const_roots_iterator roots_end() const { return Roots.end(); } 3544241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 35538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu eop_iterator eop_begin() { return EndNodes.begin(); } 3561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35738b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu eop_iterator eop_end() { return EndNodes.end(); } 3581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 35938b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_eop_iterator eop_begin() const { return EndNodes.begin(); } 3601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 36138b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const_eop_iterator eop_end() const { return EndNodes.end(); } 36238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 3635fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek llvm::BumpPtrAllocator & getAllocator() { return BVC.getAllocator(); } 3645fe4d9deb543a19f557e3d85c5f33867af97cd96Ted Kremenek BumpVectorContext &getNodeAllocator() { return BVC; } 36538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 36638b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu typedef llvm::DenseMap<const ExplodedNode*, ExplodedNode*> NodeMap; 36738b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu 368c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu std::pair<ExplodedGraph*, InterExplodedGraphMap*> 369fe9e543a2a363df7fcaa899367d3b2580b63b27cTed Kremenek Trim(const NodeTy* const* NBeg, const NodeTy* const* NEnd, 37038b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu llvm::DenseMap<const void*, const void*> *InverseMap = 0) const; 371cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek 37238b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu ExplodedGraph* TrimInternal(const ExplodedNode* const * NBeg, 37338b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu const ExplodedNode* const * NEnd, 37438b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu InterExplodedGraphMap *M, 37538b02b912e1a55c912f603c4369431264d36a381Zhongxing Xu llvm::DenseMap<const void*, const void*> *InverseMap) const; 376d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 377d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// Enable tracking of recently allocated nodes for potential reclamation 3782ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek /// when calling reclaimRecentlyAllocatedNodes(). 3794d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose void enableNodeReclamation(unsigned Interval) { 3804d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose ReclaimCounter = ReclaimNodeInterval = Interval; 3814d9e497a2b1eab3b1214848216050c64fc3acfd6Jordan Rose } 382d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek 383d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// Reclaim "uninteresting" nodes created since the last time this method 384d767d81290288c030f3be0be1d3e62b9c8df51dcTed Kremenek /// was called. 3852ac58b7c09938bb28c51c7cd2deada609b75f94cTed Kremenek void reclaimRecentlyAllocatedNodes(); 386841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenek 387841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenekprivate: 388841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenek bool shouldCollect(const ExplodedNode *node); 389841c96a885789afea9d32d1d842033768c6d2b19Ted Kremenek void collectNode(ExplodedNode *node); 3904241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek}; 391cf118d41f7930a18dce97416ef7834a62642f587Ted Kremenek 392f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenekclass ExplodedNodeSet { 393c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef llvm::SmallPtrSet<ExplodedNode*,5> ImplTy; 394f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek ImplTy Impl; 3951eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 396f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenekpublic: 3979c378f705405d37f49795d5e915989de774fe11fTed Kremenek ExplodedNodeSet(ExplodedNode *N) { 398c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu assert (N && !static_cast<ExplodedNode*>(N)->isSink()); 399f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek Impl.insert(N); 400f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek } 4011eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 402f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek ExplodedNodeSet() {} 4031eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4049c378f705405d37f49795d5e915989de774fe11fTed Kremenek inline void Add(ExplodedNode *N) { 405c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu if (N && !static_cast<ExplodedNode*>(N)->isSink()) Impl.insert(N); 406f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek } 4071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 408c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef ImplTy::iterator iterator; 409c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef ImplTy::const_iterator const_iterator; 410f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek 411fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek unsigned size() const { return Impl.size(); } 412fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek bool empty() const { return Impl.empty(); } 4131aae01a8308d2f8e31adab3f4d7ac35543aac680Anna Zaks bool erase(ExplodedNode *N) { return Impl.erase(N); } 414fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek 415fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek void clear() { Impl.clear(); } 416fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek void insert(const ExplodedNodeSet &S) { 4172d950b15b2b2b650b102ecf0c6b50b45e0cb6a8aAnna Zaks assert(&S != this); 418fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek if (empty()) 419fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek Impl = S.Impl; 420fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek else 421fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek Impl.insert(S.begin(), S.end()); 422fee96e043108b6e24e7d4c5464bf89ac970a7f81Ted Kremenek } 4231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 424f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline iterator begin() { return Impl.begin(); } 425f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline iterator end() { return Impl.end(); } 4261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 427f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline const_iterator begin() const { return Impl.begin(); } 428f6f5ef4aaa66b60270e84d1fe1292886369d2f38Ted Kremenek inline const_iterator end() const { return Impl.end(); } 4291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump}; 4301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4315a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis} // end GR namespace 4325a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 4334241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek} // end clang namespace 4344241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek 4354a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek// GraphTraits 4364a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 4374a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremeneknamespace llvm { 4389ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek template<> struct GraphTraits<clang::ento::ExplodedNode*> { 4399ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek typedef clang::ento::ExplodedNode NodeType; 440c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef NodeType::succ_iterator ChildIteratorType; 4414a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek typedef llvm::df_iterator<NodeType*> nodes_iterator; 4421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4434a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline NodeType* getEntryNode(NodeType* N) { 4444a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N; 4454a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4474a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) { 4484a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_begin(); 4494a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4501eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4514a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) { 4524a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_end(); 4534a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4554a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_begin(NodeType* N) { 4564a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_begin(N); 4574a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4594a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_end(NodeType* N) { 4604a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_end(N); 4614a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4624a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek }; 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4649ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek template<> struct GraphTraits<const clang::ento::ExplodedNode*> { 4659ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek typedef const clang::ento::ExplodedNode NodeType; 466c5619d901a68dc27a9e310a6a831f03efebcd950Zhongxing Xu typedef NodeType::const_succ_iterator ChildIteratorType; 4674a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek typedef llvm::df_iterator<NodeType*> nodes_iterator; 4681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4694a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline NodeType* getEntryNode(NodeType* N) { 4704a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N; 4714a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4734a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_begin(NodeType* N) { 4744a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_begin(); 4754a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4774a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline ChildIteratorType child_end(NodeType* N) { 4784a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return N->succ_end(); 4794a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4814a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_begin(NodeType* N) { 4824a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_begin(N); 4834a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4854a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek static inline nodes_iterator nodes_end(NodeType* N) { 4864a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek return df_end(N); 4874a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek } 4884a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek }; 4891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4904a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek} // end llvm namespace 4914a0f5f1646637fcf90eb236b5a46f40e5a5dd739Ted Kremenek 4924241b3d1ad87e9a593bbc6cdf0f49435d5aec235Ted Kremenek#endif 493