SVals.h revision 9b663716449b618ba0390b1dbebc54fa8e971124
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 189b663716449b618ba0390b1dbebc54fa8e971124Ted Kremenek#include "clang/StaticAnalyzer/Core/PathSensitive/SymbolManager.h" 19a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek#include "llvm/Support/Casting.h" 20632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenek#include "llvm/ADT/ImmutableList.h" 216f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek 226f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremeneknamespace llvm { 236f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek class raw_ostream; 246f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek} 256f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek 260f10d50fe23c08f5133db0ad7269e7995ad9b172Ted Kremenek//==------------------------------------------------------------------------==// 271c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu// Base SVal types. 281c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu//==------------------------------------------------------------------------==// 29a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 300f10d50fe23c08f5133db0ad7269e7995ad9b172Ted Kremeneknamespace clang { 31632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenek 329ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremeneknamespace ento { 335a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 34632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenekclass CompoundValData; 35a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekclass LazyCompoundValData; 36a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekclass GRState; 37632e8b84976f683b365eddfacd04ea5d6f4d8cdfTed Kremenekclass BasicValueFactory; 389e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenekclass MemRegion; 39a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekclass TypedRegion; 40a1718c78770db93d1b762620f07728a56786f2aeZhongxing Xuclass MemRegionManager; 419e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenekclass GRStateManager; 42c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenekclass SValBuilder; 431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 44834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan/// SVal - This represents a symbolic expression, which can be either 45834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan/// an L-value or an R-value. 46834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan/// 471c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass SVal { 48a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 49834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan enum BaseKind { 50834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan // The enumerators must be representable using 2 bits. 51834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan UndefinedKind = 0, // for subclass UndefinedVal (an uninitialized value) 52834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan UnknownKind = 1, // for subclass UnknownVal (a void value) 53834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan LocKind = 2, // for subclass Loc (an L-value) 54834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan NonLocKind = 3 // for subclass NonLoc (an R-value that's not 55834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan // an L-value) 56834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan }; 57aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek enum { BaseBits = 2, BaseMask = 0x3 }; 581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5990e1481ef15ec75e3503e0c6e5effad5bd639f01Ted Kremenekprotected: 6003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const void* Data; 61834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan 62834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan /// The lowest 2 bits are a BaseKind (0 -- 3). 63834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan /// The higher bits are an unsigned "kind" value. 64a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek unsigned Kind; 651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 66a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekprotected: 670074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit SVal(const void* d, bool isLoc, unsigned ValKind) 6803509aea098772644bf4662dc1c88634818ceeccZhongxing Xu : Data(d), Kind((isLoc ? LocKind : NonLocKind) | (ValKind << BaseBits)) {} 691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 7003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu explicit SVal(BaseKind k, const void* D = NULL) 7105a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek : Data(D), Kind(k) {} 721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 73a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 740074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit SVal() : Data(0), Kind(0) {} 757177dee8aee4b432911c91f1b788963bec0cac9fDaniel Dunbar ~SVal() {} 761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 771c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu /// BufferTy - A temporary buffer to hold a set of SVals. 781c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu typedef llvm::SmallVector<SVal,5> BufferTy; 791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 80aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline unsigned getRawKind() const { return Kind; } 81aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline BaseKind getBaseKind() const { return (BaseKind) (Kind & BaseMask); } 82aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline unsigned getSubKind() const { return (Kind & ~BaseMask) >> BaseBits; } 831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 84aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline void Profile(llvm::FoldingSetNodeID& ID) const { 85a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek ID.AddInteger((unsigned) getRawKind()); 8603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu ID.AddPointer(Data); 87a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 886764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 891c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu inline bool operator==(const SVal& R) const { 90aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() == R.getRawKind() && Data == R.Data; 91a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 931c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu inline bool operator!=(const SVal& R) const { 94dc3936b0557ce7377905b387d3c69bc8fa484b9cTed Kremenek return !(*this == R); 95dc3936b0557ce7377905b387d3c69bc8fa484b9cTed Kremenek } 964193eca10ce0cc8b2dae887e935a43b26f492b5bZhongxing Xu 97aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline bool isUnknown() const { 98aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() == UnknownKind; 99aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 100aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 1014a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek inline bool isUndef() const { 1024a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek return getRawKind() == UndefinedKind; 103aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 104aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 1054a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek inline bool isUnknownOrUndef() const { 106aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() <= UnknownKind; 107aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 1081eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 109aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek inline bool isValid() const { 110aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return getRawKind() > UnknownKind; 111aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 1121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 113b10a7c235f82c6eb074be097c9ae7ee51fccc9c6Zhongxing Xu bool isConstant() const; 114b10a7c235f82c6eb074be097c9ae7ee51fccc9c6Zhongxing Xu 115db2fa8a7eb67b1e8f32a590b8e000e1259cff91aTom Care bool isConstant(int I) const; 116db2fa8a7eb67b1e8f32a590b8e000e1259cff91aTom Care 11740fc5c7e235965af368a34cdbb6d32827cd1e1d8Ted Kremenek bool isZeroConstant() const; 118369f447eded97e6048ced02c0c2be3842f61fc1cZhongxing Xu 119264e93799c891c03d60cf0b09a032b0a9935d3b5Zhongxing Xu /// hasConjuredSymbol - If this SVal wraps a conjured symbol, return true; 120264e93799c891c03d60cf0b09a032b0a9935d3b5Zhongxing Xu bool hasConjuredSymbol() const; 121264e93799c891c03d60cf0b09a032b0a9935d3b5Zhongxing Xu 122369f447eded97e6048ced02c0c2be3842f61fc1cZhongxing Xu /// getAsFunctionDecl - If this SVal is a MemRegionVal and wraps a 1231eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// CodeTextRegion wrapping a FunctionDecl, return that FunctionDecl. 124369f447eded97e6048ced02c0c2be3842f61fc1cZhongxing Xu /// Otherwise return 0. 125369f447eded97e6048ced02c0c2be3842f61fc1cZhongxing Xu const FunctionDecl* getAsFunctionDecl() const; 1261eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1271eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump /// getAsLocSymbol - If this SVal is a location (subclasses Loc) and 128d6db976dd4c48b556862d093fb564b9cbc09aae3Jordy Rose /// wraps a symbol, return that SymbolRef. Otherwise return NULL. 12994c969804b1f98650316a8f75434b2d24dbe94eaTed Kremenek SymbolRef getAsLocSymbol() const; 1301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 131c8023788ace75cf0a0417b9b88e643ceebae91e2Zhongxing Xu /// Get the symbol in the SVal or its base region. 132c8023788ace75cf0a0417b9b88e643ceebae91e2Zhongxing Xu SymbolRef getLocSymbolInBase() const; 133c8023788ace75cf0a0417b9b88e643ceebae91e2Zhongxing Xu 13494c969804b1f98650316a8f75434b2d24dbe94eaTed Kremenek /// getAsSymbol - If this Sval wraps a symbol return that SymbolRef. 13594c969804b1f98650316a8f75434b2d24dbe94eaTed Kremenek /// Otherwise return a SymbolRef where 'isValid()' returns false. 13694c969804b1f98650316a8f75434b2d24dbe94eaTed Kremenek SymbolRef getAsSymbol() const; 137e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek 138e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek /// getAsSymbolicExpression - If this Sval wraps a symbolic expression then 139e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek /// return that expression. Otherwise return NULL. 140e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek const SymExpr *getAsSymbolicExpression() const; 141edb883cabf32ef39a3f2ce7a7437894e176a740bZhongxing Xu 142edb883cabf32ef39a3f2ce7a7437894e176a740bZhongxing Xu const MemRegion *getAsRegion() const; 1431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1446f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek void dumpToStream(llvm::raw_ostream& OS) const; 1456f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek void dump() const; 146e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek 147e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek // Iterators. 1480d958e7066db0ac2ecbce7286068db50cdb1de63Ted Kremenek class symbol_iterator { 149e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek llvm::SmallVector<const SymExpr*, 5> itr; 150e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek void expand(); 1510d958e7066db0ac2ecbce7286068db50cdb1de63Ted Kremenek public: 152e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator() {} 153e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator(const SymExpr* SE); 1541eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 155e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator& operator++(); 156e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek SymbolRef operator*(); 1571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 158e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek bool operator==(const symbol_iterator& X) const; 159e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek bool operator!=(const symbol_iterator& X) const; 1600d958e7066db0ac2ecbce7286068db50cdb1de63Ted Kremenek }; 1611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 162e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator symbol_begin() const { 163e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek const SymExpr *SE = getAsSymbolicExpression(); 164e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek if (SE) 165e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek return symbol_iterator(SE); 166e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek else 167e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek return symbol_iterator(); 168e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek } 1691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 170e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek symbol_iterator symbol_end() const { return symbol_iterator(); } 1711eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 172a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek // Implement isa<T> support. 1731c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal*) { return true; } 174a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 175a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 176a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 1771c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass UndefinedVal : public SVal { 178a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 1791c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu UndefinedVal() : SVal(UndefinedKind) {} 18003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu UndefinedVal(const void* D) : SVal(UndefinedKind, D) {} 1811eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1821c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 1834a4e524afef40d6f3ddb25d0e407c814e4ca56a8Ted Kremenek return V->getBaseKind() == UndefinedKind; 18405a2378c708688c8ef498a5cea40ed7f5db15fa5Ted Kremenek } 1851eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 18603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const void* getData() const { return Data; } 187a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 1881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 1895b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekclass DefinedOrUnknownSVal : public SVal { 1905b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekprivate: 1915b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // Do not implement. We want calling these methods to be a compiler 1925b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // error since they are tautologically false. 1935b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isUndef() const; 1945b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isValid() const; 1955b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 196c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenekprotected: 1975b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek explicit DefinedOrUnknownSVal(const void* d, bool isLoc, unsigned ValKind) 198c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek : SVal(d, isLoc, ValKind) {} 1995b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 2005b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek explicit DefinedOrUnknownSVal(BaseKind k, void *D = NULL) 2015b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek : SVal(k, D) {} 2025b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 2035b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekpublic: 2045b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // Implement isa<T> support. 2055b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek static inline bool classof(const SVal *V) { 2065b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek return !V->isUndef(); 2075b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek } 2085b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek}; 2095b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 2105b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekclass UnknownVal : public DefinedOrUnknownSVal { 2115b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekpublic: 2120074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit UnknownVal() : DefinedOrUnknownSVal(UnknownKind) {} 2135b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek 2145b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek static inline bool classof(const SVal *V) { 2155b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek return V->getBaseKind() == UnknownKind; 2165b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek } 2175b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek}; 218834f9de3d3d76986d09f41725a70ba45a3e2aecdZhanyong Wan 2195b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekclass DefinedSVal : public DefinedOrUnknownSVal { 2205b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekprivate: 2215b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // Do not implement. We want calling these methods to be a compiler 2225b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek // error since they are tautologically true/false. 2235b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isUnknown() const; 2245b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isUnknownOrUndef() const; 2255b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek bool isValid() const; 2265b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenekprotected: 2270074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit DefinedSVal(const void* d, bool isLoc, unsigned ValKind) 2285b9bd2137ebef350af803c634e3fdf5d74678100Ted Kremenek : DefinedOrUnknownSVal(d, isLoc, ValKind) {} 22908780078183ae4b2534c69a3e0ded596cdb695baTed Kremenekpublic: 230c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek // Implement isa<T> support. 231c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek static inline bool classof(const SVal *V) { 232c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek return !V->isUnknownOrUndef(); 2331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 234c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek}; 235a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 236c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenekclass NonLoc : public DefinedSVal { 237a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekprotected: 2380074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit NonLoc(unsigned SubKind, const void* d) 2390074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek : DefinedSVal(d, false, SubKind) {} 2401eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 241a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekpublic: 2426f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek void dumpToStream(llvm::raw_ostream& Out) const; 2431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 244a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek // Implement isa<T> support. 2451c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 2461c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind; 247a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 248a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 249a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 250c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenekclass Loc : public DefinedSVal { 251a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenekprotected: 2520074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit Loc(unsigned SubKind, const void* D) 253c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek : DefinedSVal(const_cast<void*>(D), true, SubKind) {} 254da9ae6088b9543134a6561a412b79530e290408dTed Kremenek 255cf78b6a771bb4537d5ee8fa44e718e842c2f70c7Ted Kremenekpublic: 2566f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek void dumpToStream(llvm::raw_ostream& Out) const; 2572fdf555af136cb017f4dc0c26d5d3415d122e1ffZhongxing Xu 258c3a94151d12e3821f760e1e342f719ddeebeea19Ted Kremenek Loc(const Loc& X) : DefinedSVal(X.Data, true, X.getSubKind()) {} 2591eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 260a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek // Implement isa<T> support. 2611c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 2621c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == LocKind; 263a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek } 2641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2651c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool IsLocType(QualType T) { 266852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek return T->isAnyPointerType() || T->isBlockPointerType() || 267852274d4257134906995cb252fb3dfd2d71deae8Ted Kremenek T->isReferenceType(); 2680e470a5326ccf2f6a7c3d12b2aa54a7af2292837Ted Kremenek } 269a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek}; 2701eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 271a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek//==------------------------------------------------------------------------==// 2721c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu// Subclasses of NonLoc. 2731c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu//==------------------------------------------------------------------------==// 274a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 2751c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xunamespace nonloc { 2761eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 277e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenekenum Kind { ConcreteIntKind, SymbolValKind, SymExprValKind, 278a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek LocAsIntegerKind, CompoundValKind, LazyCompoundValKind }; 279329f854f217d72594a3ec5572eba6320f81a5efaTed Kremenek 2801c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass SymbolVal : public NonLoc { 281aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 282e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek SymbolVal(SymbolRef sym) : NonLoc(SymbolValKind, sym) {} 2831eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2842dabd4372c50019fa00aae223ce634e0e754a3f2Ted Kremenek SymbolRef getSymbol() const { 285e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek return (const SymbolData*) Data; 286aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 2871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2881c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 2891eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return V->getBaseKind() == NonLocKind && 290aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek V->getSubKind() == SymbolValKind; 291aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 2921eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 2931c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const NonLoc* V) { 294aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return V->getSubKind() == SymbolValKind; 295aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 296aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 2979466aa8cf38aa8e87fe3e2cd8005fc245d04f9b7Ted Kremenek 2981eb4433ac451dc16f4133a88af2d002ac26c58efMike Stumpclass SymExprVal : public NonLoc { 299aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 3000074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit SymExprVal(const SymExpr *SE) 301e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek : NonLoc(SymExprValKind, reinterpret_cast<const void*>(SE)) {} 302329f854f217d72594a3ec5572eba6320f81a5efaTed Kremenek 303e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek const SymExpr *getSymbolicExpression() const { 30403509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return reinterpret_cast<const SymExpr*>(Data); 305aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 3061eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3071c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 3081c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind && 309e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek V->getSubKind() == SymExprValKind; 310aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 3111eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3121c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const NonLoc* V) { 313e0e4ebf6bfca5a71b2344d8a1b748b852509279cTed Kremenek return V->getSubKind() == SymExprValKind; 314aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 315aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 316aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 3171c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass ConcreteInt : public NonLoc { 318aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 3190074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit ConcreteInt(const llvm::APSInt& V) : NonLoc(ConcreteIntKind, &V) {} 3201eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 321aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek const llvm::APSInt& getValue() const { 32203509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return *static_cast<const llvm::APSInt*>(Data); 323aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 3241eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 325aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Transfer functions for binary/unary operations on ConcreteInts. 326c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek SVal evalBinOp(SValBuilder &svalBuilder, BinaryOperator::Opcode Op, 3278cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek const ConcreteInt& R) const; 3281eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 329c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek ConcreteInt evalComplement(SValBuilder &svalBuilder) const; 3301eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 331c8413fd03f73084a5c93028f8b4db619fc388087Ted Kremenek ConcreteInt evalMinus(SValBuilder &svalBuilder) const; 3321eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 333aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Implement isa<T> support. 3341c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 3351c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind && 336aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek V->getSubKind() == ConcreteIntKind; 337aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 3381eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3391c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const NonLoc* V) { 340aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return V->getSubKind() == ConcreteIntKind; 341aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 342aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 3431eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3441c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass LocAsInteger : public NonLoc { 3459ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek friend class ento::SValBuilder; 346d91ee27950ef5c321db1ac2aa5becb75ffe7cb14Zhongxing Xu 3470074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit LocAsInteger(const std::pair<SVal, uintptr_t>& data) : 3481c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu NonLoc(LocAsIntegerKind, &data) { 3491c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu assert (isa<Loc>(data.first)); 350718c4f7b3ff713c3ebee46553d687bde63e5666fTed Kremenek } 3511eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3520fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenekpublic: 3531eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3541c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu Loc getLoc() const { 3551c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return cast<Loc>(((std::pair<SVal, uintptr_t>*) Data)->first); 3560fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3571eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3581c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu const Loc& getPersistentLoc() const { 3591c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu const SVal& V = ((std::pair<SVal, uintptr_t>*) Data)->first; 3601c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return cast<Loc>(V); 3611eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 3621eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3630fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek unsigned getNumBits() const { 3641c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return ((std::pair<SVal, unsigned>*) Data)->second; 3650fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3661eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3670fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek // Implement isa<T> support. 3681c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 3691c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == NonLocKind && 3701c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu V->getSubKind() == LocAsIntegerKind; 3710fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3721eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 3731c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const NonLoc* V) { 3741c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getSubKind() == LocAsIntegerKind; 3750fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek } 3760fe33bc94a822e315585e5cde1964d3c3b9052f9Ted Kremenek}; 3776764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3786764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xuclass CompoundVal : public NonLoc { 3799ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek friend class ento::SValBuilder; 3806764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3810074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit CompoundVal(const CompoundValData* D) : NonLoc(CompoundValKind, D) {} 3826764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3836764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xupublic: 384a6fac4e446eb30ed270eff9d4084d5db5e657fcfTed Kremenek const CompoundValData* getValue() const { 38503509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return static_cast<const CompoundValData*>(Data); 3866764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu } 3871eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 388a6fac4e446eb30ed270eff9d4084d5db5e657fcfTed Kremenek typedef llvm::ImmutableList<SVal>::iterator iterator; 389a6fac4e446eb30ed270eff9d4084d5db5e657fcfTed Kremenek iterator begin() const; 3901eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump iterator end() const; 3916764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3926764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu static bool classof(const SVal* V) { 3936764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu return V->getBaseKind() == NonLocKind && V->getSubKind() == CompoundValKind; 3946764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu } 3956764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu 3966764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu static bool classof(const NonLoc* V) { 3976764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu return V->getSubKind() == CompoundValKind; 3986764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu } 3996764b72f6f26b5c03471b9e379a44d379d2d4a9eZhongxing Xu}; 4001eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 401a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekclass LazyCompoundVal : public NonLoc { 4029ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek friend class ento::SValBuilder; 403a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek 4040074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit LazyCompoundVal(const LazyCompoundValData *D) 405a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek : NonLoc(LazyCompoundValKind, D) {} 406a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenekpublic: 407451ac091cd1868433985396a25cbbf2092ae8ca9Ted Kremenek const LazyCompoundValData *getCVData() const { 408451ac091cd1868433985396a25cbbf2092ae8ca9Ted Kremenek return static_cast<const LazyCompoundValData*>(Data); 409451ac091cd1868433985396a25cbbf2092ae8ca9Ted Kremenek } 410bfcaf8048d1673320de60a22ca9c297d7484b2a8Zhongxing Xu const void *getStore() const; 411a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek const TypedRegion *getRegion() const; 4121eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 413a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek static bool classof(const SVal *V) { 4141eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump return V->getBaseKind() == NonLocKind && 415a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek V->getSubKind() == LazyCompoundValKind; 416a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek } 417a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek static bool classof(const NonLoc *V) { 418a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek return V->getSubKind() == LazyCompoundValKind; 419a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek } 420a5e81f1240bcc5b9b0721fc6275075ad7cadaf5eTed Kremenek}; 4211eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4229ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek} // end namespace ento::nonloc 423516f91b0917f2aafdce1a989482d21a7224b40ecTed Kremenek 424516f91b0917f2aafdce1a989482d21a7224b40ecTed Kremenek//==------------------------------------------------------------------------==// 4251c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu// Subclasses of Loc. 4261c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu//==------------------------------------------------------------------------==// 427516f91b0917f2aafdce1a989482d21a7224b40ecTed Kremenek 4281c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xunamespace loc { 4291eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 43014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidisenum Kind { GotoLabelKind, MemRegionKind, ConcreteIntKind, ObjCPropRefKind }; 431329f854f217d72594a3ec5572eba6320f81a5efaTed Kremenek 4321c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass GotoLabel : public Loc { 433aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 4340074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit GotoLabel(LabelStmt* Label) : Loc(GotoLabelKind, Label) {} 4351eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 43603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu const LabelStmt* getLabel() const { 43703509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return static_cast<const LabelStmt*>(Data); 438aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4391eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4401c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 4411c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == LocKind && 442aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek V->getSubKind() == GotoLabelKind; 443aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4441eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4451c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const Loc* V) { 446aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return V->getSubKind() == GotoLabelKind; 4471eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 448aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 4491eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 450cf78b6a771bb4537d5ee8fa44e718e842c2f70c7Ted Kremenek 4511c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass MemRegionVal : public Loc { 452aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 4530074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit MemRegionVal(const MemRegion* r) : Loc(MemRegionKind, r) {} 4549e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek 455993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek const MemRegion* getRegion() const { 45603509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return static_cast<const MemRegion*>(Data); 457aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4581eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 459479529e679957fbb92b56e116e3c86734429331eZhongxing Xu const MemRegion* StripCasts() const; 4601eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 461993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek template <typename REGION> 462993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek const REGION* getRegionAs() const { 463993f1c72913417be7c534ec7a634363cdfc84fa5Ted Kremenek return llvm::dyn_cast<REGION>(getRegion()); 4641eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 4651eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4669e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek inline bool operator==(const MemRegionVal& R) const { 4679e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek return getRegion() == R.getRegion(); 468aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4691eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4709e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek inline bool operator!=(const MemRegionVal& R) const { 4719e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek return getRegion() != R.getRegion(); 472aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4731eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 474aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Implement isa<T> support. 4751c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 4761c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == LocKind && 4779e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek V->getSubKind() == MemRegionKind; 478aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4791eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 4801c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const Loc* V) { 4819e24049bef26b6289cce9ac9b483c5cbb096e3aeTed Kremenek return V->getSubKind() == MemRegionKind; 4821eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump } 483aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 484aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek 4851c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xuclass ConcreteInt : public Loc { 486aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenekpublic: 4870074b48fb8ea5040de546c79be43916efe0c1f76Ted Kremenek explicit ConcreteInt(const llvm::APSInt& V) : Loc(ConcreteIntKind, &V) {} 4881eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 489aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek const llvm::APSInt& getValue() const { 49003509aea098772644bf4662dc1c88634818ceeccZhongxing Xu return *static_cast<const llvm::APSInt*>(Data); 491aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 4922a502578a785d5e7ed9e08e2895dbdcfa5333c11Ted Kremenek 493aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Transfer functions for binary/unary operations on ConcreteInts. 4949c14953d0c84f7cf5adfb4cd3c0f05a9b1723c1cTed Kremenek SVal evalBinOp(BasicValueFactory& BasicVals, BinaryOperator::Opcode Op, 4958cc13ea74fea1c04042a2f4087665bc5182e8408Ted Kremenek const ConcreteInt& R) const; 4961eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 497aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek // Implement isa<T> support. 4981c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const SVal* V) { 4991c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu return V->getBaseKind() == LocKind && 500aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek V->getSubKind() == ConcreteIntKind; 501aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 5021eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 5031c96b24285d05c0eac455ae96d7c9ff43d42bc96Zhongxing Xu static inline bool classof(const Loc* V) { 504aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek return V->getSubKind() == ConcreteIntKind; 505aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek } 506aa1c4e5a6b87b62d991c55a0d4522bcd778068d7Ted Kremenek}; 5071eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump 50814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis/// \brief Pseudo-location SVal used by the ExprEngine to simulate a "load" or 50914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis/// "store" of an ObjC property for the dot syntax. 51014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidisclass ObjCPropRef : public Loc { 51114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidispublic: 51214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis explicit ObjCPropRef(const ObjCPropertyRefExpr *E) 51314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis : Loc(ObjCPropRefKind, E) {} 51414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 51514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis const ObjCPropertyRefExpr *getPropRefExpr() const { 51614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return static_cast<const ObjCPropertyRefExpr *>(Data); 51714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 51814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 51914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis // Implement isa<T> support. 52014429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis static inline bool classof(const SVal* V) { 52114429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return V->getBaseKind() == LocKind && 52214429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis V->getSubKind() == ObjCPropRefKind; 52314429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 52414429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 52514429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis static inline bool classof(const Loc* V) { 52614429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis return V->getSubKind() == ObjCPropRefKind; 52714429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis } 52814429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis}; 52914429b918bd2f4cb52abc75546a7fe37142054caArgyrios Kyrtzidis 5309ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek} // end ento::loc namespace 5315a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis} // end GR namespace 5325a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 5331eb4433ac451dc16f4133a88af2d002ac26c58efMike Stump} // end clang namespace 534a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek 5356f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremeneknamespace llvm { 5366f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenekstatic inline llvm::raw_ostream& operator<<(llvm::raw_ostream& os, 5379ef6537a894c33003359b1f9b9676e9178e028b7Ted Kremenek clang::ento::SVal V) { 5386f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek V.dumpToStream(os); 5396f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek return os; 5406f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek} 5415a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 5426f9b3a4d7143362d3c2ac1f843d76971799f5b97Ted Kremenek} // end llvm namespace 5435a4f98ff943e6a501b0fe47ade007c9bbf96cb88Argyrios Kyrtzidis 544a90ccfe03ce62f4c33cbb96982947cf474b4fae4Ted Kremenek#endif 545