Add option --dump-export-targets

... dumping only the configured targets that are export targets.
Those targets are of particular interest as those are the targets,
as they are the high-level caching points and also often serve
as interface between projects.

2 files changed, 15 insertions, 3 deletions

diff --git a/src/buildtool/common/cli.hpp b/src/buildtool/common/cli.hpp
index 6592a02f..4650f749 100644
--- a/src/buildtool/common/cli.hpp
+++ b/src/buildtool/common/cli.hpp
@@ -77,6 +77,7 @@ struct DiagnosticArguments {
     std::optional<std::string> dump_trees{std::nullopt};
     std::optional<std::string> dump_vars{std::nullopt};
     std::optional<std::string> dump_targets{std::nullopt};
+    std::optional<std::string> dump_export_targets{std::nullopt};
     std::optional<std::string> dump_targets_graph{std::nullopt};
     std::optional<std::string> dump_anonymous{std::nullopt};
     std::optional<std::string> dump_nodes{std::nullopt};
@@ -283,6 +284,10 @@ static inline auto SetupDiagnosticArguments(
                     clargs->dump_targets,
                     "Dump targets to file (use - for stdout).")
         ->type_name("PATH");
+    app->add_option("--dump-export-targets",
+                    clargs->dump_export_targets,
+                    "Dump \"export\" targets to file (use - for stdout).")
+        ->type_name("PATH");
     app->add_option("--dump-targets-graph",
                     clargs->dump_targets_graph,
                     "Dump the graph of the configured targets to file.")
diff --git a/src/buildtool/main/main.cpp b/src/buildtool/main/main.cpp
index fbbef488..0c9f047a 100644
--- a/src/buildtool/main/main.cpp
+++ b/src/buildtool/main/main.cpp
@@ -787,7 +787,8 @@ void DumpTrees(std::string const& file_path, AnalysisResult const& result) {
 }
 
 void DumpTargets(std::string const& file_path,
-                 std::vector<Target::ConfiguredTarget> const& target_ids) {
+                 std::vector<Target::ConfiguredTarget> const& target_ids,
+                 std::string const& target_qualifier = "") {
     auto repo_map = nlohmann::json::object();
     auto conf_list =
         [&repo_map](Base::EntityName const& ref) -> nlohmann::json& {
@@ -813,12 +814,14 @@ void DumpTargets(std::string const& file_path,
         });
     auto const dump_string = IndentListsOnlyUntilDepth(repo_map, 2);
     if (file_path == "-") {
-        Logger::Log(LogLevel::Info, "List of analysed targets:");
+        Logger::Log(
+            LogLevel::Info, "List of analysed {}targets:", target_qualifier);
         std::cout << dump_string << std::endl;
     }
     else {
         Logger::Log(LogLevel::Info,
-                    "Dumping list of analysed targets to file '{}'.",
+                    "Dumping list of analysed {}targets to file '{}'.",
+                    target_qualifier,
                     file_path);
         std::ofstream os(file_path);
         os << dump_string << std::endl;
@@ -941,6 +944,10 @@ void DumpNodes(std::string const& file_path, AnalysisResult const& result) {
     if (clargs.dump_targets) {
         DumpTargets(*clargs.dump_targets, result_map.ConfiguredTargets());
     }
+    if (clargs.dump_export_targets) {
+        DumpTargets(
+            *clargs.dump_export_targets, result_map.ExportTargets(), "export ");
+    }
     if (clargs.dump_targets_graph) {
         auto graph = result_map.ConfiguredTargetsGraph().dump(2);
         Logger::Log(LogLevel::Info,