TargetCacheEntry: return implied targets, if serialized

2 files changed, 20 insertions, 0 deletions

diff --git a/src/buildtool/storage/target_cache_entry.cpp b/src/buildtool/storage/target_cache_entry.cpp
index e06d0caa..002b3465 100644
--- a/src/buildtool/storage/target_cache_entry.cpp
+++ b/src/buildtool/storage/target_cache_entry.cpp
@@ -45,6 +45,22 @@ auto TargetCacheEntry::ToResult() const noexcept
     return TargetResult::FromJson(desc_);
 }
 
+auto TargetCacheEntry::ToImplied() const noexcept -> std::set<std::string> {
+    std::set<std::string> result{};
+    if (desc_.contains("implied export targets")) {
+        try {
+            for (auto const& x : desc_["implied export targets"]) {
+                result.emplace(x);
+            }
+        } catch (std::exception const& ex) {
+            Logger::Log(LogLevel::Warning,
+                        "Exception reading implied export targets: {}",
+                        ex.what());
+        }
+    }
+    return result;
+}
+
 [[nodiscard]] auto ToObjectInfo(nlohmann::json const& json)
     -> Artifact::ObjectInfo {
     auto const& desc = ArtifactDescription::FromJson(json);
diff --git a/src/buildtool/storage/target_cache_entry.hpp b/src/buildtool/storage/target_cache_entry.hpp
index c83d7929..a976dd8c 100644
--- a/src/buildtool/storage/target_cache_entry.hpp
+++ b/src/buildtool/storage/target_cache_entry.hpp
@@ -16,6 +16,7 @@
 #define INCLUDED_SRC_BUILDTOOL_STORAGE_TARGET_CACHE_ENTRY_HPP
 
 #include <optional>
+#include <set>
 #include <unordered_map>
 #include <utility>
 #include <vector>
@@ -46,6 +47,9 @@ class TargetCacheEntry {
     // Obtain TargetResult from cache entry.
     [[nodiscard]] auto ToResult() const noexcept -> std::optional<TargetResult>;
 
+    // Obtain the implied export targets
+    [[nodiscard]] auto ToImplied() const noexcept -> std::set<std::string>;
+
     // Obtain all artifacts from cache entry (all should be known
     // artifacts).
     [[nodiscard]] auto ToArtifacts(