//===-- NoopAnalysis.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

//

//===----------------------------------------------------------------------===//

//

//  This file defines a NoopAnalysis class that just uses the builtin transfer.

//

//===----------------------------------------------------------------------===//

#ifndef LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_NOOPANALYSIS_H

#define LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_NOOPANALYSIS_H

#include "clang/AST/ASTContext.h"

#include "clang/Analysis/CFG.h"

#include "clang/Analysis/FlowSensitive/DataflowAnalysis.h"

#include "clang/Analysis/FlowSensitive/DataflowEnvironment.h"

#include "clang/Analysis/FlowSensitive/NoopLattice.h"

namespace clang {

namespace dataflow {

class NoopAnalysis : public DataflowAnalysis<NoopAnalysis, NoopLattice> {

public:

  /// Deprecated. Use the `DataflowAnalysisOptions` constructor instead.

  NoopAnalysis(ASTContext &Context, bool ApplyBuiltinTransfer)

      : DataflowAnalysis<NoopAnalysis, NoopLattice>(Context,

                                                    ApplyBuiltinTransfer) {}

  /// `ApplyBuiltinTransfer` controls whether to run the built-in transfer

  /// functions that model memory during the analysis. Their results are not

  /// used by `NoopAnalysis`, but tests that need to inspect the environment

  /// should enable them.

  NoopAnalysis(ASTContext &Context, DataflowAnalysisOptions Options)

      : DataflowAnalysis<NoopAnalysis, NoopLattice>(Context, Options) {}

  static NoopLattice initialElement() { return {}; }

  void transfer(const CFGElement &E, NoopLattice &L, Environment &Env) {}

};

} // namespace dataflow

} // namespace clang

#endif // LLVM_CLANG_ANALYSIS_FLOWSENSITIVE_NOOPANALYSIS_H