1//===- TypeVisitorCallbackPipeline.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_TYPEVISITORCALLBACKPIPELINE_H
10#define LLVM_DEBUGINFO_CODEVIEW_TYPEVISITORCALLBACKPIPELINE_H
11
12#include "llvm/DebugInfo/CodeView/CodeView.h"
13#include "llvm/DebugInfo/CodeView/TypeRecord.h"
14#include "llvm/DebugInfo/CodeView/TypeVisitorCallbacks.h"
15#include "llvm/Support/Error.h"
16#include <vector>
17
18namespace llvm {
19namespace codeview {
20
21class TypeVisitorCallbackPipeline : public TypeVisitorCallbacks {
22public:
23  TypeVisitorCallbackPipeline() = default;
24
25  Error visitUnknownType(CVRecord<TypeLeafKind> &Record) override {
26    for (auto *Visitor : Pipeline) {
27      if (auto EC = Visitor->visitUnknownType(Record))
28        return EC;
29    }
30    return Error::success();
31  }
32
33  Error visitUnknownMember(CVMemberRecord &Record) override {
34    for (auto *Visitor : Pipeline) {
35      if (auto EC = Visitor->visitUnknownMember(Record))
36        return EC;
37    }
38    return Error::success();
39  }
40
41  Error visitTypeBegin(CVType &Record) override {
42    for (auto *Visitor : Pipeline) {
43      if (auto EC = Visitor->visitTypeBegin(Record))
44        return EC;
45    }
46    return Error::success();
47  }
48
49  Error visitTypeBegin(CVType &Record, TypeIndex Index) override {
50    for (auto *Visitor : Pipeline) {
51      if (auto EC = Visitor->visitTypeBegin(Record, Index))
52        return EC;
53    }
54    return Error::success();
55  }
56
57  Error visitTypeEnd(CVType &Record) override {
58    for (auto *Visitor : Pipeline) {
59      if (auto EC = Visitor->visitTypeEnd(Record))
60        return EC;
61    }
62    return Error::success();
63  }
64
65  Error visitMemberBegin(CVMemberRecord &Record) override {
66    for (auto *Visitor : Pipeline) {
67      if (auto EC = Visitor->visitMemberBegin(Record))
68        return EC;
69    }
70    return Error::success();
71  }
72
73  Error visitMemberEnd(CVMemberRecord &Record) override {
74    for (auto *Visitor : Pipeline) {
75      if (auto EC = Visitor->visitMemberEnd(Record))
76        return EC;
77    }
78    return Error::success();
79  }
80
81  void addCallbackToPipeline(TypeVisitorCallbacks &Callbacks) {
82    Pipeline.push_back(&Callbacks);
83  }
84
85#define TYPE_RECORD(EnumName, EnumVal, Name)                                   \
86  Error visitKnownRecord(CVType &CVR, Name##Record &Record) override {         \
87    return visitKnownRecordImpl(CVR, Record);                                  \
88  }
89#define MEMBER_RECORD(EnumName, EnumVal, Name)                                 \
90  Error visitKnownMember(CVMemberRecord &CVMR, Name##Record &Record)           \
91      override {                                                               \
92    return visitKnownMemberImpl(CVMR, Record);                                 \
93  }
94#define TYPE_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName)
95#define MEMBER_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName)
96#include "llvm/DebugInfo/CodeView/CodeViewTypes.def"
97
98private:
99  template <typename T> Error visitKnownRecordImpl(CVType &CVR, T &Record) {
100    for (auto *Visitor : Pipeline) {
101      if (auto EC = Visitor->visitKnownRecord(CVR, Record))
102        return EC;
103    }
104    return Error::success();
105  }
106
107  template <typename T>
108  Error visitKnownMemberImpl(CVMemberRecord &CVMR, T &Record) {
109    for (auto *Visitor : Pipeline) {
110      if (auto EC = Visitor->visitKnownMember(CVMR, Record))
111        return EC;
112    }
113    return Error::success();
114  }
115  std::vector<TypeVisitorCallbacks *> Pipeline;
116};
117
118} // end namespace codeview
119} // end namespace llvm
120
121#endif // LLVM_DEBUGINFO_CODEVIEW_TYPEVISITORCALLBACKPIPELINE_H
122