================
@@ -1845,10 +1853,88 @@ ASTReader::readSLocOffset(ModuleFile *F, unsigned
Index) {
std::errc::illegal_byte_sequence,
"incorrectly-formatted source location entry in AST file");
case SM_SLOC_FILE_ENTRY:
+ return SLocEntryInfo{
+ static_cast<SourceLocation::UIntTy>(F->SLocEntryBaseOffset +
Record[0]),
+ static_cast<unsigned>(Record[4])};
case SM_SLOC_BUFFER_ENTRY:
case SM_SLOC_EXPANSION_ENTRY:
- return F->SLocEntryBaseOffset + Record[0];
+ return SLocEntryInfo{
+ static_cast<SourceLocation::UIntTy>(F->SLocEntryBaseOffset +
Record[0]),
+ 0};
+ }
+}
+
+void ASTReader::buildLoadedInputFiles() {
+ LoadedInputFilesBuilt = true;
+ // ModuleManager iterates modules in index order, so the copy chosen for a
+ // file does not depend on module load order.
+ for (ModuleFile &F : ModuleMgr) {
+ for (unsigned I = 0, N = F.InputFilesLoaded.size(); I != N; ++I) {
+ InputFileInfo FI = getInputFileInfo(F, I + 1);
+ if (FI.UnresolvedImportedFilename.empty())
+ continue;
+ // An overridden input holds a buffer rather than the file named by its
+ // path, so its path and size cannot identify matching contents.
+ if (FI.Overridden)
+ continue;
+ auto Filename =
+ ResolveImportedPath(PathBuf, FI.UnresolvedImportedFilename, F);
+ // Make both paths absolute and remove dot segments before comparing
them.
+ SmallString<128> Key(*Filename);
+ FileMgr.makeAbsolutePath(Key, /*Canonicalize=*/true);
+ LoadedInputFiles[Key].push_back({FI.StoredSize, &F, I + 1});
+ }
+ }
+}
+
+InputFileLoc ASTReader::getLoadedInputFileLoc(ModuleFile &F, unsigned InputID)
{
+ if (!F.InputFileLocsLoadedBuilt) {
+ F.InputFileLocsLoadedBuilt = true;
+ F.InputFileLocsLoaded.resize(F.InputFilesLoaded.size());
+ for (unsigned I = 0; I != F.LocalNumSLocEntries; ++I) {
+ Expected<SLocEntryInfo> MaybeInfo = readSLocFileEntry(&F, I);
+ if (!MaybeInfo) {
+ // Failing to find an entry only prevents a redirect, so leave the file
+ // local rather than failing the write.
+ consumeError(MaybeInfo.takeError());
+ continue;
+ }
+ if (!MaybeInfo->InputID ||
+ MaybeInfo->InputID > F.InputFileLocsLoaded.size())
+ continue;
+ // A module writes its entries in order, so the first entry naming an
+ // input file is the one we want.
+ InputFileLoc &Loc = F.InputFileLocsLoaded[MaybeInfo->InputID - 1];
+ if (Loc.FID.isInvalid())
+ Loc = {FileID::get(F.SLocEntryBaseID + I), MaybeInfo->Offset};
----------------
cor3ntin wrote:
Can you explain this line?
https://github.com/llvm/llvm-project/pull/209795
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