AnalysisContext.h revision ad5a894df1841698c824381b414630799adc26ca
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; 33326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass ImplicitParamDecl; 34326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContextManager; 35326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass StackFrameContext; 36d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 37c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xunamespace idx { class TranslationUnit; } 38c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 39326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek/// AnalysisContext contains the context data for the function or method under 40326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek/// analysis. 41326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass AnalysisContext { 42326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Decl *D; 43326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 44c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu // TranslationUnit is NULL if we don't have multiple translation units. 452ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *TU; 46c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 47326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // AnalysisContext owns the following data. 48ad5a894df1841698c824381b414630799adc26caTed Kremenek CFG *cfg, *completeCFG; 49ad5a894df1841698c824381b414630799adc26caTed Kremenek bool builtCFG, builtCompleteCFG; 50326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *liveness; 51326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ParentMap *PM; 52326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek llvm::DenseMap<const BlockDecl*,void*> *ReferencedBlockVars; 53326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek llvm::BumpPtrAllocator A; 54326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek bool AddEHEdges; 55326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 562ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu AnalysisContext(const Decl *d, idx::TranslationUnit *tu, 57c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu bool addehedges = false) 58ad5a894df1841698c824381b414630799adc26caTed Kremenek : D(d), TU(tu), cfg(0), completeCFG(0), 59ad5a894df1841698c824381b414630799adc26caTed Kremenek builtCFG(false), builtCompleteCFG(false), 60ad5a894df1841698c824381b414630799adc26caTed Kremenek liveness(0), PM(0), 61d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek ReferencedBlockVars(0), AddEHEdges(addehedges) {} 62326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 63326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~AnalysisContext(); 64326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 65326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ASTContext &getASTContext() { return D->getASTContext(); } 66c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu const Decl *getDecl() const { return D; } 67c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 682ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *getTranslationUnit() const { return TU; } 69c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 70326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// getAddEHEdges - Return true iff we are adding exceptional edges from 71326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// callExprs. If this is false, then try/catch statements and blocks 72326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// reachable from them can appear to be dead in the CFG, analysis passes must 73326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// cope with that. 74326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek bool getAddEHEdges() const { return AddEHEdges; } 75326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek Stmt *getBody(); 76326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek CFG *getCFG(); 77ad5a894df1841698c824381b414630799adc26caTed Kremenek 78ad5a894df1841698c824381b414630799adc26caTed Kremenek /// Return a version of the CFG without any edges pruned. 79ad5a894df1841698c824381b414630799adc26caTed Kremenek CFG *getUnoptimizedCFG(); 80ad5a894df1841698c824381b414630799adc26caTed Kremenek 81326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ParentMap &getParentMap(); 82326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *getLiveVariables(); 83326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 84326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek typedef const VarDecl * const * referenced_decls_iterator; 85326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 86326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek std::pair<referenced_decls_iterator, referenced_decls_iterator> 87326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek getReferencedBlockVars(const BlockDecl *BD); 88d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 89326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// Return the ImplicitParamDecl* associated with 'self' if this 90326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// AnalysisContext wraps an ObjCMethodDecl. Returns NULL otherwise. 91326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ImplicitParamDecl *getSelfDecl() const; 92326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 93326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 94326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass AnalysisContextManager { 95326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek typedef llvm::DenseMap<const Decl*, AnalysisContext*> ContextMap; 96326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextMap Contexts; 97326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 98326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~AnalysisContextManager(); 99326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1002ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu AnalysisContext *getContext(const Decl *D, idx::TranslationUnit *TU = 0); 101d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 102326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // Discard all previously created AnalysisContexts. 103326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void clear(); 104326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 105326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 106326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContext : public llvm::FoldingSetNode { 107326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 108326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek enum ContextKind { StackFrame, Scope, Block }; 109326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 110326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprivate: 111326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind Kind; 112a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu 113a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu // AnalysisContext can't be const since some methods may modify its member. 114326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *Ctx; 115a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu 116326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *Parent; 117326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 118326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprotected: 119326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LocationContext(ContextKind k, AnalysisContext *ctx, 120326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent) 121326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : Kind(k), Ctx(ctx), Parent(parent) {} 122326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 123326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 124326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek virtual ~LocationContext(); 125d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 126326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind getKind() const { return Kind; } 127326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 128326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *getAnalysisContext() const { return Ctx; } 129326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1302ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *getTranslationUnit() const { 131c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return Ctx->getTranslationUnit(); 132c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 133c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 134326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *getParent() const { return Parent; } 135326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1368ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu bool isParentOf(const LocationContext *LC) const; 1378ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu 138326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Decl *getDecl() const { return getAnalysisContext()->getDecl(); } 139326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 140326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek CFG *getCFG() const { return getAnalysisContext()->getCFG(); } 141326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 142326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *getLiveVariables() const { 143326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return getAnalysisContext()->getLiveVariables(); 144326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 145326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 146d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek ParentMap &getParentMap() const { 147326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return getAnalysisContext()->getParentMap(); 148326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 149326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 150326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ImplicitParamDecl *getSelfDecl() const { 151326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getSelfDecl(); 152326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 153d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 154326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext *getCurrentStackFrame() const; 155326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext * 156326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek getStackFrameForDeclContext(const DeclContext *DC) const; 157326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 158326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek virtual void Profile(llvm::FoldingSetNodeID &ID) = 0; 159326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 160326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext*) { return true; } 161326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 162326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 163326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void ProfileCommon(llvm::FoldingSetNodeID &ID, 164326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind ck, 165326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *ctx, 166326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 167326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const void* data); 168326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 169326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 170326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass StackFrameContext : public LocationContext { 171326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The callsite where this stack frame is established. 172326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *CallSite; 173326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 174326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The parent block of the callsite. 175326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *Block; 176326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 177326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The index of the callsite in the CFGBlock. 178326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned Index; 179326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 180326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 181326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek StackFrameContext(AnalysisContext *ctx, const LocationContext *parent, 182326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s, const CFGBlock *blk, unsigned idx) 183d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek : LocationContext(StackFrame, ctx, parent), CallSite(s), Block(blk), 184326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek Index(idx) {} 185326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 186326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 187326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~StackFrameContext() {} 188326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 189326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *getCallSite() const { return CallSite; } 190326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 191326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *getCallSiteBlock() const { return Block; } 192326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 193326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned getIndex() const { return Index; } 194326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 195326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 196d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 197326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 198d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek const LocationContext *parent, const Stmt *s, 199326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *blk, unsigned idx) { 200326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, StackFrame, ctx, parent, s); 201326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ID.AddPointer(blk); 202326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ID.AddInteger(idx); 203326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 204326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 205326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 206326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == StackFrame; 207326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 208326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 209326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 210326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass ScopeContext : public LocationContext { 211326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *Enter; 212d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 213326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 214326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ScopeContext(AnalysisContext *ctx, const LocationContext *parent, 215326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s) 216326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : LocationContext(Scope, ctx, parent), Enter(s) {} 217326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 218326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 219326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~ScopeContext() {} 220326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 221326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 222326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 223326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 224326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, const Stmt *s) { 225326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, Scope, ctx, parent, s); 226326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 227326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 228326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 229326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == Scope; 230326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 231326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 232326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 233326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass BlockInvocationContext : public LocationContext { 234326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // FIXME: Add back context-sensivity (we don't want libAnalysis to know 235326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // about MemRegion). 236326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *BD; 237326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 238326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 239326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 240326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek BlockInvocationContext(AnalysisContext *ctx, const LocationContext *parent, 241326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *bd) 242326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : LocationContext(Block, ctx, parent), BD(bd) {} 243326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 244326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 245326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~BlockInvocationContext() {} 246326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 247326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *getBlockDecl() const { return BD; } 248326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 249326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 250326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 251326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 252326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, const BlockDecl *bd) { 253326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, Block, ctx, parent, bd); 254326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 255d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 256326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 257326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == Block; 258326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 259326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 260326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 261326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContextManager { 262326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek llvm::FoldingSet<LocationContext> Contexts; 263326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 264326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~LocationContextManager(); 265d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 266326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext *getStackFrame(AnalysisContext *ctx, 267326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 268326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s, const CFGBlock *blk, 269326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned idx); 270326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 271326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ScopeContext *getScope(AnalysisContext *ctx, 272326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 273326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s); 274d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 275326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// Discard all previously created LocationContext objects. 276326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void clear(); 277326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprivate: 278326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek template <typename LOC, typename DATA> 279326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LOC *getLocationContext(AnalysisContext *ctx, 280326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 281326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const DATA *d); 282326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 283326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 284326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek} // end clang namespace 285326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#endif 286