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//===- CVSymbolVisitor.cpp --------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#include "llvm/DebugInfo/CodeView/CVSymbolVisitor.h"
#include "llvm/DebugInfo/CodeView/CodeViewError.h"
#include "llvm/DebugInfo/CodeView/SymbolVisitorCallbacks.h"
using namespace llvm;
using namespace llvm::codeview;
CVSymbolVisitor::CVSymbolVisitor(SymbolVisitorCallbacks &Callbacks)
: Callbacks(Callbacks) {}
template <typename T>
static Error visitKnownRecord(CVSymbol &Record,
SymbolVisitorCallbacks &Callbacks) {
SymbolRecordKind RK = static_cast<SymbolRecordKind>(Record.kind());
T KnownRecord(RK);
if (auto EC = Callbacks.visitKnownRecord(Record, KnownRecord))
return EC;
return Error::success();
}
static Error finishVisitation(CVSymbol &Record,
SymbolVisitorCallbacks &Callbacks) {
switch (Record.kind()) {
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/CodeViewSymbols.def"
}
if (auto EC = Callbacks.visitSymbolEnd(Record))
return EC;
return Error::success();
}
Error CVSymbolVisitor::visitSymbolRecord(CVSymbol &Record) {
if (auto EC = Callbacks.visitSymbolBegin(Record))
return EC;
return finishVisitation(Record, Callbacks);
}
Error CVSymbolVisitor::visitSymbolRecord(CVSymbol &Record, uint32_t Offset) {
if (auto EC = Callbacks.visitSymbolBegin(Record, Offset))
return EC;
return finishVisitation(Record, Callbacks);
}
Error CVSymbolVisitor::visitSymbolStream(const CVSymbolArray &Symbols) {
for (auto I : Symbols) {
if (auto EC = visitSymbolRecord(I))
return EC;
}
return Error::success();
}
Error CVSymbolVisitor::visitSymbolStream(const CVSymbolArray &Symbols,
uint32_t InitialOffset) {
for (auto I : Symbols) {
if (auto EC = visitSymbolRecord(I, InitialOffset + Symbols.skew()))
return EC;
InitialOffset += I.length();
}
return Error::success();
}
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