Frame.h

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//===--- Frame.h - Call frame for the VM and AST Walker ---------*- 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
//
//===----------------------------------------------------------------------===//
//
// Defines the base class of interpreter and evaluator stack frames.
//
//===----------------------------------------------------------------------===//
 
#ifndef LLVM_CLANG_AST_INTERP_FRAME_H
#define LLVM_CLANG_AST_INTERP_FRAME_H
 
#include "clang/Basic/SourceLocation.h"
 
namespace llvm {
class raw_ostream;
} // namespace llvm
 
namespace clang {
class FunctionDecl;
 
namespace interp {
 
/// Base class for stack frames, shared between VM and walker.
class Frame {
public:
  virtual ~Frame() = default;
 
  /// Generates a human-readable description of the call site.
  virtual void describe(llvm::raw_ostream &OS) const = 0;
 
  /// Returns a pointer to the caller frame.
  virtual Frame *getCaller() const = 0;
 
  /// Returns the location of the call site.
  virtual SourceRange getCallRange() const = 0;
 
  /// Returns the called function's declaration.
  virtual const FunctionDecl *getCallee() const = 0;
};
 
} // namespace interp
} // namespace clang
 
#endif