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      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/ADT/STLExtras.h"
     11 #include "llvm/DebugInfo/CodeView/CodeView.h"
     12 #include "llvm/DebugInfo/CodeView/DebugChecksumsSubsection.h"
     13 #include "llvm/DebugInfo/CodeView/DebugStringTableSubsection.h"
     14 #include "llvm/DebugInfo/CodeView/DebugSubsectionRecord.h"
     15 #include "llvm/Support/Error.h"
     16 #include <cassert>
     17 
     18 using namespace llvm;
     19 using namespace llvm::codeview;
     20 
     21 StringsAndChecksumsRef::StringsAndChecksumsRef() = default;
     22 
     23 StringsAndChecksumsRef::StringsAndChecksumsRef(
     24     const DebugStringTableSubsectionRef &Strings)
     25     : Strings(&Strings) {}
     26 
     27 StringsAndChecksumsRef::StringsAndChecksumsRef(
     28     const DebugStringTableSubsectionRef &Strings,
     29     const DebugChecksumsSubsectionRef &Checksums)
     30     : Strings(&Strings), Checksums(&Checksums) {}
     31 
     32 void StringsAndChecksumsRef::initializeStrings(
     33     const DebugSubsectionRecord &SR) {
     34   assert(SR.kind() == DebugSubsectionKind::StringTable);
     35   assert(!Strings && "Found a string table even though we already have one!");
     36 
     37   OwnedStrings = std::make_shared<DebugStringTableSubsectionRef>();
     38   consumeError(OwnedStrings->initialize(SR.getRecordData()));
     39   Strings = OwnedStrings.get();
     40 }
     41 
     42 void StringsAndChecksumsRef::reset() {
     43   resetStrings();
     44   resetChecksums();
     45 }
     46 
     47 void StringsAndChecksumsRef::resetStrings() {
     48   OwnedStrings.reset();
     49   Strings = nullptr;
     50 }
     51 
     52 void StringsAndChecksumsRef::resetChecksums() {
     53   OwnedChecksums.reset();
     54   Checksums = nullptr;
     55 }
     56 
     57 void StringsAndChecksumsRef::setStrings(
     58     const DebugStringTableSubsectionRef &StringsRef) {
     59   OwnedStrings = std::make_shared<DebugStringTableSubsectionRef>();
     60   *OwnedStrings = StringsRef;
     61   Strings = OwnedStrings.get();
     62 }
     63 
     64 void StringsAndChecksumsRef::setChecksums(
     65     const DebugChecksumsSubsectionRef &CS) {
     66   OwnedChecksums = std::make_shared<DebugChecksumsSubsectionRef>();
     67   *OwnedChecksums = CS;
     68   Checksums = OwnedChecksums.get();
     69 }
     70 
     71 void StringsAndChecksumsRef::initializeChecksums(
     72     const DebugSubsectionRecord &FCR) {
     73   assert(FCR.kind() == DebugSubsectionKind::FileChecksums);
     74   if (Checksums)
     75     return;
     76 
     77   OwnedChecksums = std::make_shared<DebugChecksumsSubsectionRef>();
     78   consumeError(OwnedChecksums->initialize(FCR.getRecordData()));
     79   Checksums = OwnedChecksums.get();
     80 }
     81