1 files changed, 79 insertions, 0 deletions
diff --git a/clang-r344140b/include/llvm/DebugInfo/CodeView/SymbolVisitorCallbackPipeline.h b/clang-r344140b/include/llvm/DebugInfo/CodeView/SymbolVisitorCallbackPipeline.h
new file mode 100644
index 00000000..e29511a6
--- /dev/null
+++ b/clang-r344140b/include/llvm/DebugInfo/CodeView/SymbolVisitorCallbackPipeline.h
@@ -0,0 +1,79 @@
+//===- SymbolVisitorCallbackPipeline.h --------------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_DEBUGINFO_CODEVIEW_SYMBOLVISITORCALLBACKPIPELINE_H
+#define LLVM_DEBUGINFO_CODEVIEW_SYMBOLVISITORCALLBACKPIPELINE_H
+
+#include "llvm/DebugInfo/CodeView/SymbolRecord.h"
+#include "llvm/DebugInfo/CodeView/SymbolVisitorCallbacks.h"
+#include "llvm/Support/Error.h"
+#include <vector>
+
+namespace llvm {
+namespace codeview {
+
+class SymbolVisitorCallbackPipeline : public SymbolVisitorCallbacks {
+public:
+  SymbolVisitorCallbackPipeline() = default;
+
+  Error visitUnknownSymbol(CVSymbol &Record) override {
+    for (auto Visitor : Pipeline) {
+      if (auto EC = Visitor->visitUnknownSymbol(Record))
+        return EC;
+    }
+    return Error::success();
+  }
+
+  Error visitSymbolBegin(CVSymbol &Record, uint32_t Offset) override {
+    for (auto Visitor : Pipeline) {
+      if (auto EC = Visitor->visitSymbolBegin(Record, Offset))
+        return EC;
+    }
+    return Error::success();
+  }
+
+  Error visitSymbolBegin(CVSymbol &Record) override {
+    for (auto Visitor : Pipeline) {
+      if (auto EC = Visitor->visitSymbolBegin(Record))
+        return EC;
+    }
+    return Error::success();
+  }
+
+  Error visitSymbolEnd(CVSymbol &Record) override {
+    for (auto Visitor : Pipeline) {
+      if (auto EC = Visitor->visitSymbolEnd(Record))
+        return EC;
+    }
+    return Error::success();
+  }
+
+  void addCallbackToPipeline(SymbolVisitorCallbacks &Callbacks) {
+    Pipeline.push_back(&Callbacks);
+  }
+
+#define SYMBOL_RECORD(EnumName, EnumVal, Name)                                 \
+  Error visitKnownRecord(CVSymbol &CVR, Name &Record) override {               \
+    for (auto Visitor : Pipeline) {                                            \
+      if (auto EC = Visitor->visitKnownRecord(CVR, Record))                    \
+        return EC;                                                             \
+    }                                                                          \
+    return Error::success();                                                   \
+  }
+#define SYMBOL_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName)
+#include "llvm/DebugInfo/CodeView/CodeViewSymbols.def"
+
+private:
+  std::vector<SymbolVisitorCallbacks *> Pipeline;
+};
+
+} // end namespace codeview
+} // end namespace llvm
+
+#endif // LLVM_DEBUGINFO_CODEVIEW_SYMBOLVISITORCALLBACKPIPELINE_H