contrib/llvm/tools/clang/lib/StaticAnalyzer/Core/SimpleConstraintManager.h

   1 //== SimpleConstraintManager.h ----------------------------------*- C++ -*--==//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9 //
  10 //  Code shared between BasicConstraintManager and RangeConstraintManager.
  11 //
  12 //===----------------------------------------------------------------------===//
  13
  14 #ifndef LLVM_CLANG_GR_SIMPLE_CONSTRAINT_MANAGER_H
  15 #define LLVM_CLANG_GR_SIMPLE_CONSTRAINT_MANAGER_H
  16
  17 #include "clang/StaticAnalyzer/Core/PathSensitive/ConstraintManager.h"
  18 #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h"
  19
  20 namespace clang {
  21
  22 namespace ento {
  23
  24 class SimpleConstraintManager : public ConstraintManager {
  25   SubEngine *SU;
  26   SValBuilder &SVB;
  27 public:
  28   SimpleConstraintManager(SubEngine *subengine, SValBuilder &SB)
  29     : SU(subengine), SVB(SB) {}
  30   virtual ~SimpleConstraintManager();
  31
  32   //===------------------------------------------------------------------===//
  33   // Common implementation for the interface provided by ConstraintManager.
  34   //===------------------------------------------------------------------===//
  35
  36   ProgramStateRef assume(ProgramStateRef state, DefinedSVal Cond,
  37                         bool Assumption);
  38
  39   ProgramStateRef assume(ProgramStateRef state, NonLoc Cond, bool Assumption);
  40
  41   ProgramStateRef assumeSymRel(ProgramStateRef state,
  42                               const SymExpr *LHS,
  43                               BinaryOperator::Opcode op,
  44                               const llvm::APSInt& Int);
  45
  46 protected:
  47
  48   //===------------------------------------------------------------------===//
  49   // Interface that subclasses must implement.
  50   //===------------------------------------------------------------------===//
  51
  52   // Each of these is of the form "$sym+Adj <> V", where "<>" is the comparison
  53   // operation for the method being invoked.
  54   virtual ProgramStateRef assumeSymNE(ProgramStateRef state, SymbolRef sym,
  55                                      const llvm::APSInt& V,
  56                                      const llvm::APSInt& Adjustment) = 0;
  57
  58   virtual ProgramStateRef assumeSymEQ(ProgramStateRef state, SymbolRef sym,
  59                                      const llvm::APSInt& V,
  60                                      const llvm::APSInt& Adjustment) = 0;
  61
  62   virtual ProgramStateRef assumeSymLT(ProgramStateRef state, SymbolRef sym,
  63                                      const llvm::APSInt& V,
  64                                      const llvm::APSInt& Adjustment) = 0;
  65
  66   virtual ProgramStateRef assumeSymGT(ProgramStateRef state, SymbolRef sym,
  67                                      const llvm::APSInt& V,
  68                                      const llvm::APSInt& Adjustment) = 0;
  69
  70   virtual ProgramStateRef assumeSymLE(ProgramStateRef state, SymbolRef sym,
  71                                      const llvm::APSInt& V,
  72                                      const llvm::APSInt& Adjustment) = 0;
  73
  74   virtual ProgramStateRef assumeSymGE(ProgramStateRef state, SymbolRef sym,
  75                                      const llvm::APSInt& V,
  76                                      const llvm::APSInt& Adjustment) = 0;
  77
  78   //===------------------------------------------------------------------===//
  79   // Internal implementation.
  80   //===------------------------------------------------------------------===//
  81
  82   BasicValueFactory &getBasicVals() const { return SVB.getBasicValueFactory(); }
  83   SymbolManager &getSymbolManager() const { return SVB.getSymbolManager(); }
  84
  85   bool canReasonAbout(SVal X) const;
  86
  87   ProgramStateRef assumeAux(ProgramStateRef state,
  88                                 NonLoc Cond,
  89                                 bool Assumption);
  90
  91   ProgramStateRef assumeAuxForSymbol(ProgramStateRef State,
  92                                          SymbolRef Sym,
  93                                          bool Assumption);
  94 };
  95
  96 } // end GR namespace
  97
  98 } // end clang namespace
  99
 100 #endif