llvm/lib/DebugInfo/CodeView/StringsAndChecksums.cpp

   1 //===- StringsAndChecksums.cpp --------------------------------------------===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8
   9 #include "llvm/DebugInfo/CodeView/StringsAndChecksums.h"
  10 #include "llvm/DebugInfo/CodeView/CodeView.h"
  11 #include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
  12 #include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
  13 #include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
  14 #include "llvm/Support/Error.h"
  15 #include <cassert>
  16
  17 using namespace llvm;
  18 using namespace llvm::codeview;
  19
  20 StringsAndChecksumsRef::StringsAndChecksumsRef() = default;
  21
  22 StringsAndChecksumsRef::StringsAndChecksumsRef(
  23     const DebugStringTableSubsectionRef &Strings)
  24     : Strings(&Strings) {}
  25
  26 StringsAndChecksumsRef::StringsAndChecksumsRef(
  27     const DebugStringTableSubsectionRef &Strings,
  28     const DebugChecksumsSubsectionRef &Checksums)
  29     : Strings(&Strings), Checksums(&Checksums) {}
  30
  31 void StringsAndChecksumsRef::initializeStrings(
  32     const DebugSubsectionRecord &SR) {
  33   assert(SR.kind() == DebugSubsectionKind::StringTable);
  34   assert(!Strings && "Found a string table even though we already have one!");
  35
  36   OwnedStrings = std::make_shared<DebugStringTableSubsectionRef>();
  37   consumeError(OwnedStrings->initialize(SR.getRecordData()));
  38   Strings = OwnedStrings.get();
  39 }
  40
  41 void StringsAndChecksumsRef::reset() {
  42   resetStrings();
  43   resetChecksums();
  44 }
  45
  46 void StringsAndChecksumsRef::resetStrings() {
  47   OwnedStrings.reset();
  48   Strings = nullptr;
  49 }
  50
  51 void StringsAndChecksumsRef::resetChecksums() {
  52   OwnedChecksums.reset();
  53   Checksums = nullptr;
  54 }
  55
  56 void StringsAndChecksumsRef::setStrings(
  57     const DebugStringTableSubsectionRef &StringsRef) {
  58   OwnedStrings = std::make_shared<DebugStringTableSubsectionRef>();
  59   *OwnedStrings = StringsRef;
  60   Strings = OwnedStrings.get();
  61 }
  62
  63 void StringsAndChecksumsRef::setChecksums(
  64     const DebugChecksumsSubsectionRef &CS) {
  65   OwnedChecksums = std::make_shared<DebugChecksumsSubsectionRef>();
  66   *OwnedChecksums = CS;
  67   Checksums = OwnedChecksums.get();
  68 }
  69
  70 void StringsAndChecksumsRef::initializeChecksums(
  71     const DebugSubsectionRecord &FCR) {
  72   assert(FCR.kind() == DebugSubsectionKind::FileChecksums);
  73   if (Checksums)
  74     return;
  75
  76   OwnedChecksums = std::make_shared<DebugChecksumsSubsectionRef>();
  77   consumeError(OwnedChecksums->initialize(FCR.getRecordData()));
  78   Checksums = OwnedChecksums.get();
  79 }