forked from OSchip/llvm-project
83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
//===- CVSymbolVisitor.cpp --------------------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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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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using namespace llvm;
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using namespace llvm::codeview;
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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.kind());
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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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static Error finishVisitation(CVSymbol &Record,
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SymbolVisitorCallbacks &Callbacks) {
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switch (Record.kind()) {
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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/CodeViewSymbols.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::visitSymbolRecord(CVSymbol &Record) {
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if (auto EC = Callbacks.visitSymbolBegin(Record))
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return EC;
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return finishVisitation(Record, Callbacks);
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}
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Error CVSymbolVisitor::visitSymbolRecord(CVSymbol &Record, uint32_t Offset) {
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if (auto EC = Callbacks.visitSymbolBegin(Record, Offset))
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return EC;
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return finishVisitation(Record, Callbacks);
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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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Error CVSymbolVisitor::visitSymbolStream(const CVSymbolArray &Symbols,
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uint32_t InitialOffset) {
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for (auto I : Symbols) {
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if (auto EC = visitSymbolRecord(I, InitialOffset + Symbols.skew()))
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return EC;
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InitialOffset += I.length();
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}
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return Error::success();
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}
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