1 //===--- Frame.h - Call frame for the VM and AST Walker ---------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // Defines the base class of interpreter and evaluator stack frames. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_CLANG_AST_INTERP_FRAME_H 14 #define LLVM_CLANG_AST_INTERP_FRAME_H 15 16 #include "clang/Basic/SourceLocation.h" 17 #include "llvm/Support/raw_ostream.h" 18 19 namespace clang { 20 class FunctionDecl; 21 22 namespace interp { 23 24 /// Base class for stack frames, shared between VM and walker. 25 class Frame { 26 public: 27 virtual ~Frame(); 28 29 /// Generates a human-readable description of the call site. 30 virtual void describe(llvm::raw_ostream &OS) = 0; 31 32 /// Returns a pointer to the caller frame. 33 virtual Frame *getCaller() const = 0; 34 35 /// Returns the location of the call site. 36 virtual SourceLocation getCallLocation() const = 0; 37 38 /// Returns the called function's declaration. 39 virtual const FunctionDecl *getCallee() const = 0; 40 }; 41 42 } // namespace interp 43 } // namespace clang 44 45 #endif 46