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//===- CVSymbolVisitor.cpp --------------------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/CVSymbolVisitor.h"
#include "llvm/DebugInfo/CodeView/CodeViewError.h"
#include "llvm/DebugInfo/CodeView/SymbolVisitorCallbacks.h"
#include "llvm/DebugInfo/MSF/ByteStream.h"
using namespace llvm;
using namespace llvm::codeview;
template <typename T>
static Error takeObject(ArrayRef<uint8_t> &Data, const T *&Res) {
if (Data.size() < sizeof(*Res))
return llvm::make_error<CodeViewError>(cv_error_code::insufficient_buffer);
Res = reinterpret_cast<const T *>(Data.data());
Data = Data.drop_front(sizeof(*Res));
return Error::success();
}
CVSymbolVisitor::CVSymbolVisitor(SymbolVisitorCallbacks &Callbacks)
: Callbacks(Callbacks) {}
template <typename T>
static Error visitKnownRecord(CVSymbol &Record,
SymbolVisitorCallbacks &Callbacks) {
SymbolRecordKind RK = static_cast<SymbolRecordKind>(Record.Type);
T KnownRecord(RK);
if (auto EC = Callbacks.visitKnownRecord(Record, KnownRecord))
return EC;
return Error::success();
}
Error CVSymbolVisitor::visitSymbolRecord(CVSymbol &Record) {
if (auto EC = Callbacks.visitSymbolBegin(Record))
return EC;
switch (Record.Type) {
default:
if (auto EC = Callbacks.visitUnknownSymbol(Record))
return EC;
break;
#define SYMBOL_RECORD(EnumName, EnumVal, Name) \
case EnumName: { \
if (auto EC = visitKnownRecord<Name>(Record, Callbacks)) \
return EC; \
break; \
}
#define SYMBOL_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName) \
SYMBOL_RECORD(EnumVal, EnumVal, AliasName)
#include "llvm/DebugInfo/CodeView/CVSymbolTypes.def"
}
if (auto EC = Callbacks.visitSymbolEnd(Record))
return EC;
return Error::success();
}
Error CVSymbolVisitor::visitSymbolStream(const CVSymbolArray &Symbols) {
for (auto I : Symbols) {
if (auto EC = visitSymbolRecord(I))
return EC;
}
return Error::success();
}
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