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4b8a9c1349
Type visitor code had already been refactored previously to decouple the visitor and the visitor callback interface. This was necessary for having the flexibility to visit in different ways (for example, dumping to yaml, reading from yaml, dumping to ScopedPrinter, etc). This patch merely implements the same visitation pattern for symbol records that has already been implemented for type records. llvm-svn: 283609
74 lines
2.4 KiB
C++
74 lines
2.4 KiB
C++
//===- CVSymbolVisitor.cpp --------------------------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/CodeView/CVSymbolVisitor.h"
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#include "llvm/DebugInfo/CodeView/CodeViewError.h"
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#include "llvm/DebugInfo/CodeView/SymbolVisitorCallbacks.h"
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#include "llvm/DebugInfo/MSF/ByteStream.h"
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using namespace llvm;
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using namespace llvm::codeview;
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template <typename T>
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static Error takeObject(ArrayRef<uint8_t> &Data, const T *&Res) {
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if (Data.size() < sizeof(*Res))
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return llvm::make_error<CodeViewError>(cv_error_code::insufficient_buffer);
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Res = reinterpret_cast<const T *>(Data.data());
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Data = Data.drop_front(sizeof(*Res));
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return Error::success();
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}
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CVSymbolVisitor::CVSymbolVisitor(SymbolVisitorCallbacks &Callbacks)
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: Callbacks(Callbacks) {}
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template <typename T>
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static Error visitKnownRecord(CVSymbol &Record,
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SymbolVisitorCallbacks &Callbacks) {
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SymbolRecordKind RK = static_cast<SymbolRecordKind>(Record.Type);
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T KnownRecord(RK);
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if (auto EC = Callbacks.visitKnownRecord(Record, KnownRecord))
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return EC;
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return Error::success();
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}
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Error CVSymbolVisitor::visitSymbolRecord(CVSymbol &Record) {
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if (auto EC = Callbacks.visitSymbolBegin(Record))
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return EC;
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switch (Record.Type) {
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default:
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if (auto EC = Callbacks.visitUnknownSymbol(Record))
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return EC;
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break;
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#define SYMBOL_RECORD(EnumName, EnumVal, Name) \
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case EnumName: { \
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if (auto EC = visitKnownRecord<Name>(Record, Callbacks)) \
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return EC; \
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break; \
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}
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#define SYMBOL_RECORD_ALIAS(EnumName, EnumVal, Name, AliasName) \
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SYMBOL_RECORD(EnumVal, EnumVal, AliasName)
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#include "llvm/DebugInfo/CodeView/CVSymbolTypes.def"
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}
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if (auto EC = Callbacks.visitSymbolEnd(Record))
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return EC;
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return Error::success();
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}
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Error CVSymbolVisitor::visitSymbolStream(const CVSymbolArray &Symbols) {
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for (auto I : Symbols) {
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if (auto EC = visitSymbolRecord(I))
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return EC;
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}
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return Error::success();
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}
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