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  1. //===- SymbolVisitorCallbacks.h ---------------------------------*- 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. #ifndef LLVM_DEBUGINFO_CODEVIEW_SYMBOLVISITORCALLBACKS_H
  10. #define LLVM_DEBUGINFO_CODEVIEW_SYMBOLVISITORCALLBACKS_H
  11.  
  12. #include "llvm/DebugInfo/CodeView/SymbolRecord.h"
  13. #include "llvm/Support/Error.h"
  14.  
  15. namespace llvm {
  16. namespace codeview {
  17.  
  18. class SymbolVisitorCallbacks {
  19.   friend class CVSymbolVisitor;
  20.  
  21. public:
  22.   virtual ~SymbolVisitorCallbacks() = default;
  23.  
  24.   /// Action to take on unknown symbols. By default, they are ignored.
  25.   virtual Error visitUnknownSymbol(CVSymbol &Record) {
  26.     return Error::success();
  27.   }
  28.  
  29.   /// Paired begin/end actions for all symbols. Receives all record data,
  30.   /// including the fixed-length record prefix.  visitSymbolBegin() should
  31.   /// return the type of the Symbol, or an error if it cannot be determined.
  32.   virtual Error visitSymbolBegin(CVSymbol &Record, uint32_t Offset) {
  33.     return Error::success();
  34.   }
  35.   virtual Error visitSymbolBegin(CVSymbol &Record) { return Error::success(); }
  36.   virtual Error visitSymbolEnd(CVSymbol &Record) { return Error::success(); }
  37.  
  38. #define SYMBOL_RECORD(EnumName, EnumVal, Name)                                 \
  39.   virtual Error visitKnownRecord(CVSymbol &CVR, Name &Record) {                \
  40.     return Error::success();                                                   \
  41.   }
  42. #define SYMBOL_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName)
  43. #include "llvm/DebugInfo/CodeView/CodeViewSymbols.def"
  44. };
  45.  
  46. } // end namespace codeview
  47. } // end namespace llvm
  48.  
  49. #endif // LLVM_DEBUGINFO_CODEVIEW_SYMBOLVISITORCALLBACKS_H
  50.