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103 lines
2.8 KiB
C++
103 lines
2.8 KiB
C++
//== Environment.h - Map from Stmt* to Locations/Values ---------*- C++ -*--==//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This file defined the Environment and EnvironmentManager classes.
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//
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//===----------------------------------------------------------------------===//
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#ifndef LLVM_CLANG_ANALYSIS_ENVIRONMENT_H
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#define LLVM_CLANG_ANALYSIS_ENVIRONMENT_H
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// For using typedefs in StoreManager. Should find a better place for these
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// typedefs.
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#include "clang/Checker/PathSensitive/Store.h"
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#include "llvm/ADT/ImmutableMap.h"
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#include "llvm/ADT/SmallVector.h"
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#include "clang/Checker/PathSensitive/SVals.h"
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#include "llvm/Support/Allocator.h"
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#include "llvm/ADT/FoldingSet.h"
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namespace clang {
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class AnalysisContext;
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class EnvironmentManager;
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class ValueManager;
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class LiveVariables;
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class Environment {
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private:
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friend class EnvironmentManager;
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// Type definitions.
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typedef llvm::ImmutableMap<const Stmt*,SVal> BindingsTy;
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// Data.
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BindingsTy ExprBindings;
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AnalysisContext *ACtx;
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Environment(BindingsTy eb, AnalysisContext *aCtx)
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: ExprBindings(eb), ACtx(aCtx) {}
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public:
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typedef BindingsTy::iterator iterator;
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iterator begin() const { return ExprBindings.begin(); }
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iterator end() const { return ExprBindings.end(); }
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SVal LookupExpr(const Stmt* E) const {
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const SVal* X = ExprBindings.lookup(E);
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return X ? *X : UnknownVal();
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}
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SVal GetSVal(const Stmt* Ex, ValueManager& ValMgr) const;
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AnalysisContext &getAnalysisContext() const { return *ACtx; }
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/// Profile - Profile the contents of an Environment object for use
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/// in a FoldingSet.
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static void Profile(llvm::FoldingSetNodeID& ID, const Environment* E) {
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E->ExprBindings.Profile(ID);
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}
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/// Profile - Used to profile the contents of this object for inclusion
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/// in a FoldingSet.
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void Profile(llvm::FoldingSetNodeID& ID) const {
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Profile(ID, this);
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}
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bool operator==(const Environment& RHS) const {
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return ExprBindings == RHS.ExprBindings;
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}
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};
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class EnvironmentManager {
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private:
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typedef Environment::BindingsTy::Factory FactoryTy;
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FactoryTy F;
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public:
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EnvironmentManager(llvm::BumpPtrAllocator& Allocator) : F(Allocator) {}
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~EnvironmentManager() {}
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Environment getInitialEnvironment(AnalysisContext *ACtx) {
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return Environment(F.GetEmptyMap(), ACtx);
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}
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Environment BindExpr(Environment Env, const Stmt *S, SVal V,
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bool Invalidate);
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Environment RemoveDeadBindings(Environment Env, const Stmt *S,
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SymbolReaper &SymReaper, const GRState *ST,
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llvm::SmallVectorImpl<const MemRegion*>& RegionRoots);
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};
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} // end clang namespace
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#endif
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