1 //===- TypeVisitorCallbacks.h -----------------------------------*- C++ -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 #ifndef LLVM_DEBUGINFO_CODEVIEW_TYPEVISITORCALLBACKS_H 11 #define LLVM_DEBUGINFO_CODEVIEW_TYPEVISITORCALLBACKS_H 12 13 #include "llvm/DebugInfo/CodeView/TypeRecord.h" 14 #include "llvm/Support/Error.h" 15 16 namespace llvm { 17 namespace codeview { 18 19 class TypeVisitorCallbacks { 20 public: 21 virtual ~TypeVisitorCallbacks() = default; 22 23 /// Action to take on unknown types. By default, they are ignored. 24 virtual Error visitUnknownType(CVType &Record) { return Error::success(); } 25 /// Paired begin/end actions for all types. Receives all record data, 26 /// including the fixed-length record prefix. visitTypeBegin() should return 27 /// the type of the Record, or an error if it cannot be determined. Exactly 28 /// one of the two visitTypeBegin methods will be called, depending on whether 29 /// records are being visited sequentially or randomly. An implementation 30 /// should be prepared to handle both (or assert if it can't handle random 31 /// access visitation). 32 virtual Error visitTypeBegin(CVType &Record) { return Error::success(); } 33 virtual Error visitTypeBegin(CVType &Record, TypeIndex Index) { 34 return Error::success(); 35 } 36 virtual Error visitTypeEnd(CVType &Record) { return Error::success(); } 37 38 virtual Error visitUnknownMember(CVMemberRecord &Record) { 39 return Error::success(); 40 } 41 42 virtual Error visitMemberBegin(CVMemberRecord &Record) { 43 return Error::success(); 44 } 45 46 virtual Error visitMemberEnd(CVMemberRecord &Record) { 47 return Error::success(); 48 } 49 50 #define TYPE_RECORD(EnumName, EnumVal, Name) \ 51 virtual Error visitKnownRecord(CVType &CVR, Name##Record &Record) { \ 52 return Error::success(); \ 53 } 54 #define MEMBER_RECORD(EnumName, EnumVal, Name) \ 55 virtual Error visitKnownMember(CVMemberRecord &CVM, Name##Record &Record) { \ 56 return Error::success(); \ 57 } 58 59 #define TYPE_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName) 60 #define MEMBER_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName) 61 #include "llvm/DebugInfo/CodeView/CodeViewTypes.def" 62 #undef TYPE_RECORD 63 #undef TYPE_RECORD_ALIAS 64 #undef MEMBER_RECORD 65 #undef MEMBER_RECORD_ALIAS 66 }; 67 68 } // end namespace codeview 69 } // end namespace llvm 70 71 #endif // LLVM_DEBUGINFO_CODEVIEW_TYPEVISITORCALLBACKS_H 72
