SVals.h revision 5344baa704f42b22d9df25c24ffbbf6b4716603b
122ab7a4d900ed53285fd0b6720e7b43af84724d8Zhongxing Xu//== SVals.h - Abstract Values for Static Analysis ---------*- C++ -*--==// 2a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// 3a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// The LLVM Compiler Infrastructure 4a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// 5a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// This file is distributed under the University of Illinois Open Source 6a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// License. See LICENSE.TXT for details. 7a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// 8a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek//===----------------------------------------------------------------------===// 9a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// 101c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu// This file defines SVal, Loc, and NonLoc, classes that represent 11a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// abstract r-values for use with path-sensitive value tracking. 12a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek// 13a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek//===----------------------------------------------------------------------===// 14a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 155a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis#ifndef LLVM_CLANG_GR_RVALUE_H 165a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis#define LLVM_CLANG_GR_RVALUE_H 17a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 18d47d3b0cfeb7e8564ff77f48130fe63282b6d127Chris Lattner#include "clang/Basic/LLVM.h" 199b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/SymbolManager.h" 20632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenek#include "llvm/ADT/ImmutableList.h" 216f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek 220f10d50fe23c08f5133db0ad7269e7995ad9b172Ted Kremenek//==------------------------------------------------------------------------==// 231c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu// Base SVal types. 241c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu//==------------------------------------------------------------------------==// 25a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 260f10d50fe23c08f5133db0ad7269e7995ad9b172Ted Kremeneknamespace clang { 27632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenek 289ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremeneknamespace ento { 295a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 30632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenekclass CompoundValData; 31a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekclass LazyCompoundValData; 3218c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekclass ProgramState; 33632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenekclass BasicValueFactory; 349e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenekclass MemRegion; 35a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekclass TypedRegion; 36a1718c78770db93d1b762620f07728a56786f2aeZhongxing Xuclass MemRegionManager; 3718c66fdc3c4008d335885695fe36fb5353c5f672Ted Kremenekclass ProgramStateManager; 38c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenekclass SValBuilder; 391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 40834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan/// SVal - This represents a symbolic expression, which can be either 41834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan/// an L-value or an R-value. 42834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan/// 431c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass SVal { 44a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 45834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan enum BaseKind { 46834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan // The enumerators must be representable using 2 bits. 47834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan UndefinedKind = 0, // for subclass UndefinedVal (an uninitialized value) 48834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan UnknownKind = 1, // for subclass UnknownVal (a void value) 49834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan LocKind = 2, // for subclass Loc (an L-value) 50834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan NonLocKind = 3 // for subclass NonLoc (an R-value that's not 51834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan // an L-value) 52834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan }; 53aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek enum { BaseBits = 2, BaseMask = 0x3 }; 541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5590e1481ef15ec75e3503e0c6e5effad5bd639f01Ted Kremenekprotected: 569c378f705405d37f49795d5e915989de774fe11fTed Kremenek const void *Data; 57834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan 58834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan /// The lowest 2 bits are a BaseKind (0 -- 3). 59834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan /// The higher bits are an unsigned "kind" value. 60a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek unsigned Kind; 611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 629c378f705405d37f49795d5e915989de774fe11fTed Kremenek explicit SVal(const void *d, bool isLoc, unsigned ValKind) 6303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu : Data(d), Kind((isLoc ? LocKind : NonLocKind) | (ValKind << BaseBits)) {} 641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 659c378f705405d37f49795d5e915989de774fe11fTed Kremenek explicit SVal(BaseKind k, const void *D = NULL) 6605a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek : Data(D), Kind(k) {} 671eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 68a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 690074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit SVal() : Data(0), Kind(0) {} 707177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar ~SVal() {} 711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 721c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu /// BufferTy - A temporary buffer to hold a set of SVals. 73686775deca8b8685eb90801495880e3abdd844c2Chris Lattner typedef SmallVector<SVal,5> BufferTy; 741eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 75aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline unsigned getRawKind() const { return Kind; } 76aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline BaseKind getBaseKind() const { return (BaseKind) (Kind & BaseMask); } 77aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline unsigned getSubKind() const { return (Kind & ~BaseMask) >> BaseBits; } 781eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 797dfc9420babe83e236a47e752f8723bd06070d9dZhanyong Wan // This method is required for using SVal in a FoldingSetNode. It 807dfc9420babe83e236a47e752f8723bd06070d9dZhanyong Wan // extracts a unique signature for this SVal object. 81aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline void Profile(llvm::FoldingSetNodeID& ID) const { 82a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek ID.AddInteger((unsigned) getRawKind()); 8303509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ID.AddPointer(Data); 84a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 856764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 861c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu inline bool operator==(const SVal& R) const { 87aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() == R.getRawKind() && Data == R.Data; 88a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 901c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu inline bool operator!=(const SVal& R) const { 91dc3936b0557ce7377905b387d3c69bc8fa484b9cTed Kremenek return !(*this == R); 92dc3936b0557ce7377905b387d3c69bc8fa484b9cTed Kremenek } 934193eca10ce0cc8b2dae887e935a43b26f492b5bZhongxing Xu 94aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline bool isUnknown() const { 95aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() == UnknownKind; 96aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 97aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 984a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek inline bool isUndef() const { 994a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek return getRawKind() == UndefinedKind; 100aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 101aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 1024a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek inline bool isUnknownOrUndef() const { 103aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() <= UnknownKind; 104aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 1051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 106aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline bool isValid() const { 107aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() > UnknownKind; 108aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 1091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 110b10a7c235f82c6eb074be097c9ae7ee51fccc9c6Zhongxing Xu bool isConstant() const; 111b10a7c235f82c6eb074be097c9ae7ee51fccc9c6Zhongxing Xu 112db2fa8a7eb67b1e8f32a590b8e000e1259cff91aTom Care bool isConstant(int I) const; 113db2fa8a7eb67b1e8f32a590b8e000e1259cff91aTom Care 11440fc5c7e235965af368a34cdbb6d32827cd1e1d8Ted Kremenek bool isZeroConstant() const; 115369f447eded97e6048ced02c0c2be3842f61fc1cZhongxing Xu 116264e93799c891c03d60cf0b09a032b0a9935d3b5Zhongxing Xu /// hasConjuredSymbol - If this SVal wraps a conjured symbol, return true; 117264e93799c891c03d60cf0b09a032b0a9935d3b5Zhongxing Xu bool hasConjuredSymbol() const; 118264e93799c891c03d60cf0b09a032b0a9935d3b5Zhongxing Xu 119369f447eded97e6048ced02c0c2be3842f61fc1cZhongxing Xu /// getAsFunctionDecl - If this SVal is a MemRegionVal and wraps a 1201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// CodeTextRegion wrapping a FunctionDecl, return that FunctionDecl. 121369f447eded97e6048ced02c0c2be3842f61fc1cZhongxing Xu /// Otherwise return 0. 1229c378f705405d37f49795d5e915989de774fe11fTed Kremenek const FunctionDecl *getAsFunctionDecl() const; 1231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 124fc06f988da35df75e623e0c1c4e4db4d36c0b43bAnna Zaks /// If this SVal is a location (subclasses Loc) and 125fc06f988da35df75e623e0c1c4e4db4d36c0b43bAnna Zaks /// wraps a symbol, return that SymbolRef. Otherwise return 0. 12694c969804b1f98650316a8f75434b2d24dbe94eaTed Kremenek SymbolRef getAsLocSymbol() const; 1271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 128c8023788ace75cf0a0417b9b88e643ceebae91e2Zhongxing Xu /// Get the symbol in the SVal or its base region. 129c8023788ace75cf0a0417b9b88e643ceebae91e2Zhongxing Xu SymbolRef getLocSymbolInBase() const; 130c8023788ace75cf0a0417b9b88e643ceebae91e2Zhongxing Xu 131fc06f988da35df75e623e0c1c4e4db4d36c0b43bAnna Zaks /// If this SVal wraps a symbol return that SymbolRef. 132fc06f988da35df75e623e0c1c4e4db4d36c0b43bAnna Zaks /// Otherwise, return 0. 13394c969804b1f98650316a8f75434b2d24dbe94eaTed Kremenek SymbolRef getAsSymbol() const; 134e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek 135e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek /// getAsSymbolicExpression - If this Sval wraps a symbolic expression then 136e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek /// return that expression. Otherwise return NULL. 137e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek const SymExpr *getAsSymbolicExpression() const; 138edb883cabf32ef39a3f2ce7a7437894e176a740bZhongxing Xu 13964595fad45abbaa75778609196b9223bf6f2ece3Anna Zaks const SymExpr* getAsSymExpr() const; 14064595fad45abbaa75778609196b9223bf6f2ece3Anna Zaks 141edb883cabf32ef39a3f2ce7a7437894e176a740bZhongxing Xu const MemRegion *getAsRegion() const; 1421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1439c378f705405d37f49795d5e915989de774fe11fTed Kremenek void dumpToStream(raw_ostream &OS) const; 1446f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek void dump() const; 145e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek 146e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek // Iterators. 1470d958e7066db0ac2ecbce7286068db50cdb1de63Ted Kremenek class symbol_iterator { 148686775deca8b8685eb90801495880e3abdd844c2Chris Lattner SmallVector<const SymExpr*, 5> itr; 149e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek void expand(); 1500d958e7066db0ac2ecbce7286068db50cdb1de63Ted Kremenek public: 151e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator() {} 1529c378f705405d37f49795d5e915989de774fe11fTed Kremenek symbol_iterator(const SymExpr *SE); 1531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1549c378f705405d37f49795d5e915989de774fe11fTed Kremenek symbol_iterator &operator++(); 155e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek SymbolRef operator*(); 1561eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1579c378f705405d37f49795d5e915989de774fe11fTed Kremenek bool operator==(const symbol_iterator &X) const; 1589c378f705405d37f49795d5e915989de774fe11fTed Kremenek bool operator!=(const symbol_iterator &X) const; 1590d958e7066db0ac2ecbce7286068db50cdb1de63Ted Kremenek }; 1601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 161e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator symbol_begin() const { 162e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek const SymExpr *SE = getAsSymbolicExpression(); 163e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek if (SE) 164e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek return symbol_iterator(SE); 165e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek else 166e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek return symbol_iterator(); 167e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek } 1681eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 169e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator symbol_end() const { return symbol_iterator(); } 1701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 171a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek // Implement isa<T> support. 1721c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal*) { return true; } 173a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 174a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 175a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 1761c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass UndefinedVal : public SVal { 177a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 1781c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu UndefinedVal() : SVal(UndefinedKind) {} 1799c378f705405d37f49795d5e915989de774fe11fTed Kremenek UndefinedVal(const void *D) : SVal(UndefinedKind, D) {} 1801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1811c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 1824a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek return V->getBaseKind() == UndefinedKind; 18305a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 1841eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1859c378f705405d37f49795d5e915989de774fe11fTed Kremenek const void *getData() const { return Data; } 186a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 1871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1885b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekclass DefinedOrUnknownSVal : public SVal { 1895b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekprivate: 1905b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // Do not implement. We want calling these methods to be a compiler 1915b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // error since they are tautologically false. 1925b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isUndef() const; 1935b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isValid() const; 1945b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 195c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenekprotected: 1969c378f705405d37f49795d5e915989de774fe11fTed Kremenek explicit DefinedOrUnknownSVal(const void *d, bool isLoc, unsigned ValKind) 197c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek : SVal(d, isLoc, ValKind) {} 1985b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 1995b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek explicit DefinedOrUnknownSVal(BaseKind k, void *D = NULL) 2005b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek : SVal(k, D) {} 2015b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 2025b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekpublic: 2035b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // Implement isa<T> support. 2045b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek static inline bool classof(const SVal *V) { 2055b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek return !V->isUndef(); 2065b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek } 2075b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek}; 2085b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 2095b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekclass UnknownVal : public DefinedOrUnknownSVal { 2105b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekpublic: 2110074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit UnknownVal() : DefinedOrUnknownSVal(UnknownKind) {} 2125b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 2135b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek static inline bool classof(const SVal *V) { 2145b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek return V->getBaseKind() == UnknownKind; 2155b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek } 2165b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek}; 217834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan 2185b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekclass DefinedSVal : public DefinedOrUnknownSVal { 2195b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekprivate: 2205b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // Do not implement. We want calling these methods to be a compiler 2215b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // error since they are tautologically true/false. 2225b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isUnknown() const; 2235b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isUnknownOrUndef() const; 2245b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isValid() const; 2255b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekprotected: 2269c378f705405d37f49795d5e915989de774fe11fTed Kremenek explicit DefinedSVal(const void *d, bool isLoc, unsigned ValKind) 2275b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek : DefinedOrUnknownSVal(d, isLoc, ValKind) {} 22808780078183ae4b2534c69a3e0ded596cdb695baTed Kremenekpublic: 229c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek // Implement isa<T> support. 230c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek static inline bool classof(const SVal *V) { 231c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek return !V->isUnknownOrUndef(); 2321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 233c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek}; 234a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 235c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenekclass NonLoc : public DefinedSVal { 236a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekprotected: 2379c378f705405d37f49795d5e915989de774fe11fTed Kremenek explicit NonLoc(unsigned SubKind, const void *d) 2380074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek : DefinedSVal(d, false, SubKind) {} 2391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 240a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 2419c378f705405d37f49795d5e915989de774fe11fTed Kremenek void dumpToStream(raw_ostream &Out) const; 2421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 243a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek // Implement isa<T> support. 2441c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 2451c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind; 246a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 247a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 248a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 249c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenekclass Loc : public DefinedSVal { 250a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekprotected: 2519c378f705405d37f49795d5e915989de774fe11fTed Kremenek explicit Loc(unsigned SubKind, const void *D) 252c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek : DefinedSVal(const_cast<void*>(D), true, SubKind) {} 253da9ae6088b9543134a6561a412b79530e290408dTed Kremenek 254cf78b6a771bb4537d5ee8fa44e718e842c2f70c7Ted Kremenekpublic: 2559c378f705405d37f49795d5e915989de774fe11fTed Kremenek void dumpToStream(raw_ostream &Out) const; 2562fdf555af136cb017f4dc0c26d5d3415d122e1ffZhongxing Xu 257c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek Loc(const Loc& X) : DefinedSVal(X.Data, true, X.getSubKind()) {} 2581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 259a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek // Implement isa<T> support. 2601c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 2611c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == LocKind; 262a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 2631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2647dfc9420babe83e236a47e752f8723bd06070d9dZhanyong Wan static inline bool isLocType(QualType T) { 265852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return T->isAnyPointerType() || T->isBlockPointerType() || 266852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek T->isReferenceType(); 2670e470a5326ccf2f6a7c3d12b2aa54a7af2292837Ted Kremenek } 268a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 2691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 270a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek//==------------------------------------------------------------------------==// 2711c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu// Subclasses of NonLoc. 2721c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu//==------------------------------------------------------------------------==// 273a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 2741c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xunamespace nonloc { 2751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 276e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenekenum Kind { ConcreteIntKind, SymbolValKind, SymExprValKind, 277a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek LocAsIntegerKind, CompoundValKind, LazyCompoundValKind }; 278329f854f217d72594a3ec5572eba6320f81a5efaTed Kremenek 2795344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks/// \brief Represents symbolic expression. 2801c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass SymbolVal : public NonLoc { 281aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 282e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek SymbolVal(SymbolRef sym) : NonLoc(SymbolValKind, sym) {} 2831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2842dabd4372c50019fa00aae223ce634e0e754a3f2Ted Kremenek SymbolRef getSymbol() const { 2853cdf584e068056540769dab56cad333e95a89750Anna Zaks return (const SymExpr*) Data; 286aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 2871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2885344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks bool isExpression() { 2895344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks return !isa<SymbolData>(getSymbol()); 290aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 2911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2921c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 2931c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind && 2945344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks V->getSubKind() == SymbolValKind; 295aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 2961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2971c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const NonLoc* V) { 2985344baa704f42b22d9df25c24ffbbf6b4716603bAnna Zaks return V->getSubKind() == SymbolValKind; 299aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 300aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 301aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 3021c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass ConcreteInt : public NonLoc { 303aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 3040074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit ConcreteInt(const llvm::APSInt& V) : NonLoc(ConcreteIntKind, &V) {} 3051eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 306aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek const llvm::APSInt& getValue() const { 30703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return *static_cast<const llvm::APSInt*>(Data); 308aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 3091eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 310aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Transfer functions for binary/unary operations on ConcreteInts. 311c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal evalBinOp(SValBuilder &svalBuilder, BinaryOperator::Opcode Op, 3128cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek const ConcreteInt& R) const; 3131eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 314c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek ConcreteInt evalComplement(SValBuilder &svalBuilder) const; 3151eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 316c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek ConcreteInt evalMinus(SValBuilder &svalBuilder) const; 3171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 318aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Implement isa<T> support. 3191c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 3201c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind && 321aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek V->getSubKind() == ConcreteIntKind; 322aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 3231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3241c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const NonLoc* V) { 325aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return V->getSubKind() == ConcreteIntKind; 326aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 327aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 3281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3291c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass LocAsInteger : public NonLoc { 3309ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek friend class ento::SValBuilder; 331d91ee27950ef5c321db1ac2aa5becb75ffe7cb14Zhongxing Xu 3320074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit LocAsInteger(const std::pair<SVal, uintptr_t>& data) : 3331c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu NonLoc(LocAsIntegerKind, &data) { 3341c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (isa<Loc>(data.first)); 335718c4f7b3ff713c3ebee46553d687bde63e5666fTed Kremenek } 3361eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3370fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenekpublic: 3381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3391c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu Loc getLoc() const { 3401c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return cast<Loc>(((std::pair<SVal, uintptr_t>*) Data)->first); 3410fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3431c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu const Loc& getPersistentLoc() const { 3441c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu const SVal& V = ((std::pair<SVal, uintptr_t>*) Data)->first; 3451c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return cast<Loc>(V); 3461eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3480fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek unsigned getNumBits() const { 3491c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return ((std::pair<SVal, unsigned>*) Data)->second; 3500fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3520fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek // Implement isa<T> support. 3531c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 3541c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind && 3551c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu V->getSubKind() == LocAsIntegerKind; 3560fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3581c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const NonLoc* V) { 3591c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getSubKind() == LocAsIntegerKind; 3600fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3610fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek}; 3626764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3636764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xuclass CompoundVal : public NonLoc { 3649ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek friend class ento::SValBuilder; 3656764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3660074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit CompoundVal(const CompoundValData* D) : NonLoc(CompoundValKind, D) {} 3676764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3686764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xupublic: 369a6fac4e446eb30ed270eff9d4084d5db5e657fcfTed Kremenek const CompoundValData* getValue() const { 37003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return static_cast<const CompoundValData*>(Data); 3716764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu } 3721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 373a6fac4e446eb30ed270eff9d4084d5db5e657fcfTed Kremenek typedef llvm::ImmutableList<SVal>::iterator iterator; 374a6fac4e446eb30ed270eff9d4084d5db5e657fcfTed Kremenek iterator begin() const; 3751eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump iterator end() const; 3766764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3776764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu static bool classof(const SVal* V) { 3786764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu return V->getBaseKind() == NonLocKind && V->getSubKind() == CompoundValKind; 3796764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu } 3806764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3816764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu static bool classof(const NonLoc* V) { 3826764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu return V->getSubKind() == CompoundValKind; 3836764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu } 3846764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu}; 3851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 386a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekclass LazyCompoundVal : public NonLoc { 3879ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek friend class ento::SValBuilder; 388a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek 3890074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit LazyCompoundVal(const LazyCompoundValData *D) 390a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek : NonLoc(LazyCompoundValKind, D) {} 391a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekpublic: 392451ac091cd1868433985396a25cbbf2092ae8ca9Ted Kremenek const LazyCompoundValData *getCVData() const { 393451ac091cd1868433985396a25cbbf2092ae8ca9Ted Kremenek return static_cast<const LazyCompoundValData*>(Data); 394451ac091cd1868433985396a25cbbf2092ae8ca9Ted Kremenek } 395bfcaf8048d1673320de60a22ca9c297d7484b2a8Zhongxing Xu const void *getStore() const; 396a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek const TypedRegion *getRegion() const; 3971eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 398a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek static bool classof(const SVal *V) { 3991eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return V->getBaseKind() == NonLocKind && 400a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek V->getSubKind() == LazyCompoundValKind; 401a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek } 402a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek static bool classof(const NonLoc *V) { 403a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek return V->getSubKind() == LazyCompoundValKind; 404a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek } 405a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek}; 4061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4079ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek} // end namespace ento::nonloc 408516f91b0917f2aafdce1a989482d21a7224b40ecTed Kremenek 409516f91b0917f2aafdce1a989482d21a7224b40ecTed Kremenek//==------------------------------------------------------------------------==// 4101c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu// Subclasses of Loc. 4111c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu//==------------------------------------------------------------------------==// 412516f91b0917f2aafdce1a989482d21a7224b40ecTed Kremenek 4131c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xunamespace loc { 4141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 41514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidisenum Kind { GotoLabelKind, MemRegionKind, ConcreteIntKind, ObjCPropRefKind }; 416329f854f217d72594a3ec5572eba6320f81a5efaTed Kremenek 4171c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass GotoLabel : public Loc { 418aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 419ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner explicit GotoLabel(LabelDecl *Label) : Loc(GotoLabelKind, Label) {} 4201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 421ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner const LabelDecl *getLabel() const { 422ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner return static_cast<const LabelDecl*>(Data); 423aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4251c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 426ad8dcf4a9df0e24051dc31bf9e6f3cd138a34298Chris Lattner return V->getBaseKind() == LocKind && V->getSubKind() == GotoLabelKind; 427aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4291c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const Loc* V) { 430aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return V->getSubKind() == GotoLabelKind; 4311eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 432aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 4331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 434cf78b6a771bb4537d5ee8fa44e718e842c2f70c7Ted Kremenek 4351c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass MemRegionVal : public Loc { 436aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 4370074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit MemRegionVal(const MemRegion* r) : Loc(MemRegionKind, r) {} 4389e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek 439993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek const MemRegion* getRegion() const { 44003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return static_cast<const MemRegion*>(Data); 441aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4421eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4437dfc9420babe83e236a47e752f8723bd06070d9dZhanyong Wan const MemRegion* stripCasts() const; 4441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 445993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek template <typename REGION> 446993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek const REGION* getRegionAs() const { 447993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek return llvm::dyn_cast<REGION>(getRegion()); 4481eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 4491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4509e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek inline bool operator==(const MemRegionVal& R) const { 4519e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek return getRegion() == R.getRegion(); 452aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4549e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek inline bool operator!=(const MemRegionVal& R) const { 4559e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek return getRegion() != R.getRegion(); 456aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 458aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Implement isa<T> support. 4591c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 4601c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == LocKind && 4619e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek V->getSubKind() == MemRegionKind; 462aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4631eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4641c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const Loc* V) { 4659e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek return V->getSubKind() == MemRegionKind; 4661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 467aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 468aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 4691c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass ConcreteInt : public Loc { 470aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 4710074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit ConcreteInt(const llvm::APSInt& V) : Loc(ConcreteIntKind, &V) {} 4721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 473aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek const llvm::APSInt& getValue() const { 47403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return *static_cast<const llvm::APSInt*>(Data); 475aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4762a502578a785d5e7ed9e08e2895dbdcfa5333c11Ted Kremenek 477aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Transfer functions for binary/unary operations on ConcreteInts. 4789c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal evalBinOp(BasicValueFactory& BasicVals, BinaryOperator::Opcode Op, 4798cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek const ConcreteInt& R) const; 4801eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 481aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Implement isa<T> support. 4821c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 4831c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == LocKind && 484aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek V->getSubKind() == ConcreteIntKind; 485aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4861eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4871c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const Loc* V) { 488aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return V->getSubKind() == ConcreteIntKind; 489aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 490aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 4911eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 49214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis/// \brief Pseudo-location SVal used by the ExprEngine to simulate a "load" or 49314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis/// "store" of an ObjC property for the dot syntax. 49414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidisclass ObjCPropRef : public Loc { 49514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidispublic: 49614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis explicit ObjCPropRef(const ObjCPropertyRefExpr *E) 49714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis : Loc(ObjCPropRefKind, E) {} 49814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 49914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const ObjCPropertyRefExpr *getPropRefExpr() const { 50014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return static_cast<const ObjCPropertyRefExpr *>(Data); 50114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 50214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 50314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Implement isa<T> support. 50414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis static inline bool classof(const SVal* V) { 50514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return V->getBaseKind() == LocKind && 50614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis V->getSubKind() == ObjCPropRefKind; 50714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 50814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 50914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis static inline bool classof(const Loc* V) { 51014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return V->getSubKind() == ObjCPropRefKind; 51114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 51214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis}; 51314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 5149ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek} // end ento::loc namespace 5155a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis} // end GR namespace 5165a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 5171eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end clang namespace 518a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 5196f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremeneknamespace llvm { 5209c378f705405d37f49795d5e915989de774fe11fTed Kremenekstatic inline raw_ostream &operator<<(raw_ostream &os, 5219ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek clang::ento::SVal V) { 5226f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek V.dumpToStream(os); 5236f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek return os; 5246f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek} 5255a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 5266f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek} // end llvm namespace 5275a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 528a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek#endif 529