AnalysisContext.h revision 2ce43c8f43254a9edea53a20dc0e69195bc82ae0
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. 48326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek CFG *cfg; 49d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek bool builtCFG; 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) 58c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu : D(d), TU(tu), cfg(0), builtCFG(false), liveness(0), PM(0), 59d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek ReferencedBlockVars(0), AddEHEdges(addehedges) {} 60326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 61326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~AnalysisContext(); 62326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 63326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ASTContext &getASTContext() { return D->getASTContext(); } 64c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu const Decl *getDecl() const { return D; } 65c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 662ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *getTranslationUnit() const { return TU; } 67c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 68326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// getAddEHEdges - Return true iff we are adding exceptional edges from 69326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// callExprs. If this is false, then try/catch statements and blocks 70326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// reachable from them can appear to be dead in the CFG, analysis passes must 71326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// cope with that. 72326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek bool getAddEHEdges() const { return AddEHEdges; } 73326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek Stmt *getBody(); 74326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek CFG *getCFG(); 75326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ParentMap &getParentMap(); 76326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *getLiveVariables(); 77326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 78326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek typedef const VarDecl * const * referenced_decls_iterator; 79326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 80326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek std::pair<referenced_decls_iterator, referenced_decls_iterator> 81326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek getReferencedBlockVars(const BlockDecl *BD); 82d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 83326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// Return the ImplicitParamDecl* associated with 'self' if this 84326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// AnalysisContext wraps an ObjCMethodDecl. Returns NULL otherwise. 85326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ImplicitParamDecl *getSelfDecl() const; 86326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 87326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 88326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass AnalysisContextManager { 89326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek typedef llvm::DenseMap<const Decl*, AnalysisContext*> ContextMap; 90326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextMap Contexts; 91326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 92326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~AnalysisContextManager(); 93326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 942ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu AnalysisContext *getContext(const Decl *D, idx::TranslationUnit *TU = 0); 95d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 96326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // Discard all previously created AnalysisContexts. 97326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void clear(); 98326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 99326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 100326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContext : public llvm::FoldingSetNode { 101326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 102326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek enum ContextKind { StackFrame, Scope, Block }; 103326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 104326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprivate: 105326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind Kind; 106a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu 107a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu // AnalysisContext can't be const since some methods may modify its member. 108326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *Ctx; 109a02d893f15d4663bdba3bd92ade10070bf0510e4Zhongxing Xu 110326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *Parent; 111326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 112326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprotected: 113326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LocationContext(ContextKind k, AnalysisContext *ctx, 114326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent) 115326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : Kind(k), Ctx(ctx), Parent(parent) {} 116326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 117326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 118326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek virtual ~LocationContext(); 119d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 120326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind getKind() const { return Kind; } 121326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 122326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *getAnalysisContext() const { return Ctx; } 123326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1242ce43c8f43254a9edea53a20dc0e69195bc82ae0Zhongxing Xu idx::TranslationUnit *getTranslationUnit() const { 125c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu return Ctx->getTranslationUnit(); 126c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu } 127c6238d2786cfd961b94580b3d3675a1b3ff0721cZhongxing Xu 128326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *getParent() const { return Parent; } 129326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 1308ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu bool isParentOf(const LocationContext *LC) const; 1318ddf7cead8a67342a4584a203e0bf736b7efedbeZhongxing Xu 132326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Decl *getDecl() const { return getAnalysisContext()->getDecl(); } 133326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 134326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek CFG *getCFG() const { return getAnalysisContext()->getCFG(); } 135326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 136326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek LiveVariables *getLiveVariables() const { 137326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return getAnalysisContext()->getLiveVariables(); 138326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 139326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 140d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek ParentMap &getParentMap() const { 141326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return getAnalysisContext()->getParentMap(); 142326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 143326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 144326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ImplicitParamDecl *getSelfDecl() const { 145326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getSelfDecl(); 146326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 147d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 148326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext *getCurrentStackFrame() const; 149326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext * 150326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek getStackFrameForDeclContext(const DeclContext *DC) const; 151326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 152326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek virtual void Profile(llvm::FoldingSetNodeID &ID) = 0; 153326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 154326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext*) { return true; } 155326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 156326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 157326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void ProfileCommon(llvm::FoldingSetNodeID &ID, 158326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ContextKind ck, 159326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek AnalysisContext *ctx, 160326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 161326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const void* data); 162326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 163326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 164326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass StackFrameContext : public LocationContext { 165326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The callsite where this stack frame is established. 166326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *CallSite; 167326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 168326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The parent block of the callsite. 169326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *Block; 170326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 171326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // The index of the callsite in the CFGBlock. 172326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned Index; 173326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 174326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 175326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek StackFrameContext(AnalysisContext *ctx, const LocationContext *parent, 176326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s, const CFGBlock *blk, unsigned idx) 177d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek : LocationContext(StackFrame, ctx, parent), CallSite(s), Block(blk), 178326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek Index(idx) {} 179326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 180326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 181326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~StackFrameContext() {} 182326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 183326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *getCallSite() const { return CallSite; } 184326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 185326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *getCallSiteBlock() const { return Block; } 186326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 187326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned getIndex() const { return Index; } 188326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 189326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 190d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 191326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 192d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek const LocationContext *parent, const Stmt *s, 193326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const CFGBlock *blk, unsigned idx) { 194326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, StackFrame, ctx, parent, s); 195326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ID.AddPointer(blk); 196326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ID.AddInteger(idx); 197326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 198326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 199326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 200326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == StackFrame; 201326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 202326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 203326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 204326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass ScopeContext : public LocationContext { 205326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *Enter; 206d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 207326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 208326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ScopeContext(AnalysisContext *ctx, const LocationContext *parent, 209326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s) 210326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : LocationContext(Scope, ctx, parent), Enter(s) {} 211326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 212326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 213326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~ScopeContext() {} 214326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 215326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 216326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 217326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 218326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, const Stmt *s) { 219326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, Scope, ctx, parent, s); 220326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 221326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 222326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 223326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == Scope; 224326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 225326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 226326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 227326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass BlockInvocationContext : public LocationContext { 228326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // FIXME: Add back context-sensivity (we don't want libAnalysis to know 229326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek // about MemRegion). 230326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *BD; 231326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 232326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek friend class LocationContextManager; 233326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 234326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek BlockInvocationContext(AnalysisContext *ctx, const LocationContext *parent, 235326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *bd) 236326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek : LocationContext(Block, ctx, parent), BD(bd) {} 237326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 238326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 239326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~BlockInvocationContext() {} 240326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 241326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const BlockDecl *getBlockDecl() const { return BD; } 242326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 243326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void Profile(llvm::FoldingSetNodeID &ID); 244326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 245326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static void Profile(llvm::FoldingSetNodeID &ID, AnalysisContext *ctx, 246326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, const BlockDecl *bd) { 247326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ProfileCommon(ID, Block, ctx, parent, bd); 248326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 249d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 250326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek static bool classof(const LocationContext* Ctx) { 251326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek return Ctx->getKind() == Block; 252326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek } 253326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 254326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 255326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekclass LocationContextManager { 256326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek llvm::FoldingSet<LocationContext> Contexts; 257326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekpublic: 258326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek ~LocationContextManager(); 259d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 260326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const StackFrameContext *getStackFrame(AnalysisContext *ctx, 261326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 262326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s, const CFGBlock *blk, 263326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek unsigned idx); 264326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 265326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const ScopeContext *getScope(AnalysisContext *ctx, 266326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 267326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const Stmt *s); 268d064fdc4b7b64ca55b40b70490c79d6f569df78eTed Kremenek 269326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek /// Discard all previously created LocationContext objects. 270326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek void clear(); 271326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenekprivate: 272326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek template <typename LOC, typename DATA> 273326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LOC *getLocationContext(AnalysisContext *ctx, 274326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const LocationContext *parent, 275326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek const DATA *d); 276326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek}; 277326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek 278326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek} // end clang namespace 279326be568e2cb04285c84e6e26a3e6b3822607361Ted Kremenek#endif 280