| //== SimpleConstraintManager.h ----------------------------------*- C++ -*--==// |
| // |
| // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. |
| // See https://llvm.org/LICENSE.txt for license information. |
| // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception |
| // |
| //===----------------------------------------------------------------------===// |
| // |
| // Simplified constraint manager backend. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #ifndef LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_SIMPLECONSTRAINTMANAGER_H |
| #define LLVM_CLANG_STATICANALYZER_CORE_PATHSENSITIVE_SIMPLECONSTRAINTMANAGER_H |
| |
| #include "clang/StaticAnalyzer/Core/PathSensitive/ConstraintManager.h" |
| #include "clang/StaticAnalyzer/Core/PathSensitive/ProgramState.h" |
| |
| namespace clang { |
| |
| namespace ento { |
| |
| class SimpleConstraintManager : public ConstraintManager { |
| ExprEngine *EE; |
| SValBuilder &SVB; |
| |
| public: |
| SimpleConstraintManager(ExprEngine *exprengine, SValBuilder &SB) |
| : EE(exprengine), SVB(SB) {} |
| |
| ~SimpleConstraintManager() override; |
| |
| //===------------------------------------------------------------------===// |
| // Implementation for interface from ConstraintManager. |
| //===------------------------------------------------------------------===// |
| |
| /// Ensures that the DefinedSVal conditional is expressed as a NonLoc by |
| /// creating boolean casts to handle Loc's. |
| ProgramStateRef assume(ProgramStateRef State, DefinedSVal Cond, |
| bool Assumption) override; |
| |
| ProgramStateRef assumeInclusiveRange(ProgramStateRef State, NonLoc Value, |
| const llvm::APSInt &From, |
| const llvm::APSInt &To, |
| bool InRange) override; |
| |
| protected: |
| //===------------------------------------------------------------------===// |
| // Interface that subclasses must implement. |
| //===------------------------------------------------------------------===// |
| |
| /// Given a symbolic expression that can be reasoned about, assume that it is |
| /// true/false and generate the new program state. |
| virtual ProgramStateRef assumeSym(ProgramStateRef State, SymbolRef Sym, |
| bool Assumption) = 0; |
| |
| /// Given a symbolic expression within the range [From, To], assume that it is |
| /// true/false and generate the new program state. |
| /// This function is used to handle case ranges produced by a language |
| /// extension for switch case statements. |
| virtual ProgramStateRef assumeSymInclusiveRange(ProgramStateRef State, |
| SymbolRef Sym, |
| const llvm::APSInt &From, |
| const llvm::APSInt &To, |
| bool InRange) = 0; |
| |
| /// Given a symbolic expression that cannot be reasoned about, assume that |
| /// it is zero/nonzero and add it directly to the solver state. |
| virtual ProgramStateRef assumeSymUnsupported(ProgramStateRef State, |
| SymbolRef Sym, |
| bool Assumption) = 0; |
| |
| //===------------------------------------------------------------------===// |
| // Internal implementation. |
| //===------------------------------------------------------------------===// |
| |
| SValBuilder &getSValBuilder() const { return SVB; } |
| BasicValueFactory &getBasicVals() const { return SVB.getBasicValueFactory(); } |
| SymbolManager &getSymbolManager() const { return SVB.getSymbolManager(); } |
| |
| private: |
| ProgramStateRef assume(ProgramStateRef State, NonLoc Cond, bool Assumption); |
| |
| ProgramStateRef assumeAux(ProgramStateRef State, NonLoc Cond, |
| bool Assumption); |
| }; |
| |
| } // end namespace ento |
| |
| } // end namespace clang |
| |
| #endif |