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[LLDB|CAS] Implement ExplicitCASModuleLoader::addExplicitModulePath() #86035

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Merged
adrian-prantl merged 1 commit into from
Dec 16, 2025
+18 −0
Merged

[LLDB|CAS] Implement ExplicitCASModuleLoader::addExplicitModulePath() #86035

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2 changes: 2 additions & 0 deletions include/swift/Frontend/ModuleInterfaceLoader.h
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Original file line number Diff line number Diff line change
Expand Up @@ -237,6 +237,8 @@ class ExplicitCASModuleLoader : public SerializedModuleLoaderBase {
void collectVisibleTopLevelModuleNames(
SmallVectorImpl<Identifier> &names) const override;

void addExplicitModulePath(StringRef name, std::string path) override;

~ExplicitCASModuleLoader();
};

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16 changes: 16 additions & 0 deletions lib/Frontend/ModuleInterfaceLoader.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -2791,6 +2791,22 @@ void ExplicitCASModuleLoader::collectVisibleTopLevelModuleNames(
}
}

void ExplicitCASModuleLoader::addExplicitModulePath(StringRef name,
std::string path) {
// This is used by LLDB to discover the paths to dependencies of binary Swift
// modules. Only do this if path exists in CAS, since there are use-cases
// where a binary Swift module produced on a different machine is provided and
// replacements for its dependencies are provided via the explicit module map.
auto ID = Impl.CAS.parseID(path);
if (!ID)
return llvm::consumeError(ID.takeError());
if (!Impl.CAS.getReference(*ID))
return;

ExplicitSwiftModuleInputInfo entry(path, {}, {}, {});
Impl.ExplicitModuleMap.try_emplace(name, std::move(entry));
}

std::unique_ptr<ExplicitCASModuleLoader> ExplicitCASModuleLoader::create(
ASTContext &ctx, llvm::cas::ObjectStore &CAS, llvm::cas::ActionCache &cache,
DependencyTracker *tracker, ModuleLoadingMode loadMode,
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