AnalysisContext.h revision db34ab70961ca4b24b600eb47053d7af304659f5
1326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek//=== AnalysisContext.h - Analysis context for Path Sens analysis --*- C++ -*-// 2326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// 3326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// The LLVM Compiler Infrastructure 4326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// 5326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// This file is distributed under the University of Illinois Open Source 6326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// License. See LICENSE.TXT for details. 7326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// 8326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek//===----------------------------------------------------------------------===// 9326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// 10326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// This file defines AnalysisContext, a class that manages the analysis context 11326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// data for path sensitive analysis. 12326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek// 13326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek//===----------------------------------------------------------------------===// 14326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 15326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#ifndef LLVM_CLANG_ANALYSIS_ANALYSISCONTEXT_H 16326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#define LLVM_CLANG_ANALYSIS_ANALYSISCONTEXT_H 17326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 18326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#include "clang/AST/Decl.h" 19326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#include "llvm/ADT/OwningPtr.h" 20326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#include "llvm/ADT/FoldingSet.h" 21326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#include "llvm/ADT/PointerUnion.h" 22326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#include "llvm/ADT/DenseMap.h" 23326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#include "llvm/Support/Allocator.h" 24326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 25326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremeneknamespace clang { 26326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 27326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass Decl; 28326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass Stmt; 29326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass CFG; 30326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass CFGBlock; 31326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LiveVariables; 32326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass ParentMap; 33db34ab70961ca4b24b600eb47053d7af304659f5Tom Careclass PseudoConstantAnalysis; 34326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass ImplicitParamDecl; 35326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContextManager; 36326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass StackFrameContext; 37d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 38c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xunamespace idx { class TranslationUnit; } 39c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 40326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek/// AnalysisContext contains the context data for the function or method under 41326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek/// analysis. 42326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass AnalysisContext { 43326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Decl *D; 44326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 45c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // TranslationUnit is NULL if we don't have multiple translation units. 462ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *TU; 47c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 48326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // AnalysisContext owns the following data. 49ad5a894df1841698c824381b414630799adc26caTed Kremenek CFG *cfg, *completeCFG; 50ad5a894df1841698c824381b414630799adc26caTed Kremenek bool builtCFG, builtCompleteCFG; 51326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *liveness; 52326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ParentMap *PM; 53db34ab70961ca4b24b600eb47053d7af304659f5Tom Care PseudoConstantAnalysis *PCA; 54326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek llvm::DenseMap<const BlockDecl*,void*> *ReferencedBlockVars; 55326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek llvm::BumpPtrAllocator A; 569b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek bool UseUnoptimizedCFG; 57326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek bool AddEHEdges; 58326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 592ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu AnalysisContext(const Decl *d, idx::TranslationUnit *tu, 609b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek bool useUnoptimizedCFG = false, 61c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu bool addehedges = false) 62ad5a894df1841698c824381b414630799adc26caTed Kremenek : D(d), TU(tu), cfg(0), completeCFG(0), 63ad5a894df1841698c824381b414630799adc26caTed Kremenek builtCFG(false), builtCompleteCFG(false), 64245adabd97c8c770c13935a9075f2243cc6f1d57Tom Care liveness(0), PM(0), PCA(0), 659b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek ReferencedBlockVars(0), UseUnoptimizedCFG(useUnoptimizedCFG), 669b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek AddEHEdges(addehedges) {} 67326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 68326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~AnalysisContext(); 69326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 70326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ASTContext &getASTContext() { return D->getASTContext(); } 71c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu const Decl *getDecl() const { return D; } 72c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 732ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *getTranslationUnit() const { return TU; } 74c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 75326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// getAddEHEdges - Return true iff we are adding exceptional edges from 76326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// callExprs. If this is false, then try/catch statements and blocks 77326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// reachable from them can appear to be dead in the CFG, analysis passes must 78326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// cope with that. 79326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek bool getAddEHEdges() const { return AddEHEdges; } 809b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek 819b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek bool getUseUnoptimizedCFG() const { return UseUnoptimizedCFG; } 829b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek 83326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek Stmt *getBody(); 84326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek CFG *getCFG(); 85ad5a894df1841698c824381b414630799adc26caTed Kremenek 86ad5a894df1841698c824381b414630799adc26caTed Kremenek /// Return a version of the CFG without any edges pruned. 87ad5a894df1841698c824381b414630799adc26caTed Kremenek CFG *getUnoptimizedCFG(); 88ad5a894df1841698c824381b414630799adc26caTed Kremenek 89326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ParentMap &getParentMap(); 90db34ab70961ca4b24b600eb47053d7af304659f5Tom Care PseudoConstantAnalysis *getPseudoConstantAnalysis(); 91326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *getLiveVariables(); 92326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 93326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek typedef const VarDecl * const * referenced_decls_iterator; 94326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 95326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek std::pair<referenced_decls_iterator, referenced_decls_iterator> 96326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek getReferencedBlockVars(const BlockDecl *BD); 97d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 98326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// Return the ImplicitParamDecl* associated with 'self' if this 99326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// AnalysisContext wraps an ObjCMethodDecl. Returns NULL otherwise. 100326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ImplicitParamDecl *getSelfDecl() const; 101326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 102326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 103326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass AnalysisContextManager { 104326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek typedef llvm::DenseMap<const Decl*, AnalysisContext*> ContextMap; 105326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextMap Contexts; 1069b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek bool UseUnoptimizedCFG; 107326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 1089b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek AnalysisContextManager(bool useUnoptimizedCFG = false) 1099b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek : UseUnoptimizedCFG(useUnoptimizedCFG) {} 1109b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek 111326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~AnalysisContextManager(); 112326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1132ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu AnalysisContext *getContext(const Decl *D, idx::TranslationUnit *TU = 0); 114d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 1159b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek bool getUseUnoptimizedCFG() const { return UseUnoptimizedCFG; } 1169b823e8e1ccb8a2cb49923bad22a80ca96f41f92Ted Kremenek 117326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // Discard all previously created AnalysisContexts. 118326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void clear(); 119326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 120326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 121326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContext : public llvm::FoldingSetNode { 122326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 123326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek enum ContextKind { StackFrame, Scope, Block }; 124326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 125326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprivate: 126326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind Kind; 127a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu 128a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu // AnalysisContext can't be const since some methods may modify its member. 129326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *Ctx; 130a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu 131326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *Parent; 132326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 133326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprotected: 134326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LocationContext(ContextKind k, AnalysisContext *ctx, 135326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent) 136326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : Kind(k), Ctx(ctx), Parent(parent) {} 137326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 138326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 139326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek virtual ~LocationContext(); 140d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 141326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind getKind() const { return Kind; } 142326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 143326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *getAnalysisContext() const { return Ctx; } 144326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1452ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *getTranslationUnit() const { 146c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return Ctx->getTranslationUnit(); 147c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 148c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 149326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *getParent() const { return Parent; } 150326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1518ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu bool isParentOf(const LocationContext *LC) const; 1528ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu 153326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Decl *getDecl() const { return getAnalysisContext()->getDecl(); } 154326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 155326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek CFG *getCFG() const { return getAnalysisContext()->getCFG(); } 156326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 157326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *getLiveVariables() const { 158326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return getAnalysisContext()->getLiveVariables(); 159326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 160326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 161d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek ParentMap &getParentMap() const { 162326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return getAnalysisContext()->getParentMap(); 163326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 164326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 165326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ImplicitParamDecl *getSelfDecl() const { 166326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getSelfDecl(); 167326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 168d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 169326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext *getCurrentStackFrame() const; 170326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext * 171326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek getStackFrameForDeclContext(const DeclContext *DC) const; 172326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 173326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek virtual void Profile(llvm::FoldingSetNodeID &ID) = 0; 174326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 175326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext*) { return true; } 176326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 177326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 178326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void ProfileCommon(llvm::FoldingSetNodeID &ID, 179326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind ck, 180326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *ctx, 181326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 182326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const void* data); 183326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 184326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 185326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass StackFrameContext : public LocationContext { 186326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The callsite where this stack frame is established. 187326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *CallSite; 188326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 189326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The parent block of the callsite. 190326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *Block; 191326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 192326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The index of the callsite in the CFGBlock. 193326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned Index; 194326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 195326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 196326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek StackFrameContext(AnalysisContext *ctx, const LocationContext *parent, 197326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s, const CFGBlock *blk, unsigned idx) 198d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek : LocationContext(StackFrame, ctx, parent), CallSite(s), Block(blk), 199326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek Index(idx) {} 200326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 201326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 202326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~StackFrameContext() {} 203326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 204326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *getCallSite() const { return CallSite; } 205326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 206326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *getCallSiteBlock() const { return Block; } 207326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 208326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned getIndex() const { return Index; } 209326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 210326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 211d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 212326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 213d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek const LocationContext *parent, const Stmt *s, 214326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *blk, unsigned idx) { 215326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, StackFrame, ctx, parent, s); 216326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ID.AddPointer(blk); 217326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ID.AddInteger(idx); 218326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 219326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 220326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 221326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == StackFrame; 222326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 223326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 224326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 225326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass ScopeContext : public LocationContext { 226326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *Enter; 227d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 228326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 229326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ScopeContext(AnalysisContext *ctx, const LocationContext *parent, 230326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s) 231326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : LocationContext(Scope, ctx, parent), Enter(s) {} 232326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 233326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 234326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~ScopeContext() {} 235326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 236326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 237326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 238326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 239326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, const Stmt *s) { 240326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, Scope, ctx, parent, s); 241326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 242326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 243326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 244326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == Scope; 245326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 246326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 247326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 248326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass BlockInvocationContext : public LocationContext { 249326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // FIXME: Add back context-sensivity (we don't want libAnalysis to know 250326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // about MemRegion). 251326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *BD; 252326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 253326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 254326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 255326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek BlockInvocationContext(AnalysisContext *ctx, const LocationContext *parent, 256326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *bd) 257326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : LocationContext(Block, ctx, parent), BD(bd) {} 258326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 259326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 260326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~BlockInvocationContext() {} 261326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 262326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *getBlockDecl() const { return BD; } 263326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 264326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 265326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 266326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 267326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, const BlockDecl *bd) { 268326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, Block, ctx, parent, bd); 269326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 270d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 271326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 272326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == Block; 273326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 274326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 275326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 276326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContextManager { 277326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek llvm::FoldingSet<LocationContext> Contexts; 278326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 279326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~LocationContextManager(); 280d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 281326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext *getStackFrame(AnalysisContext *ctx, 282326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 283326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s, const CFGBlock *blk, 284326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned idx); 285326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 286326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ScopeContext *getScope(AnalysisContext *ctx, 287326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 288326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s); 289d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 290326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// Discard all previously created LocationContext objects. 291326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void clear(); 292326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprivate: 293326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek template <typename LOC, typename DATA> 294326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LOC *getLocationContext(AnalysisContext *ctx, 295326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 296326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const DATA *d); 297326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 298326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 299326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek} // end clang namespace 300326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#endif 301