From bc524d70253a4ab2fe40c3ca3e5666e267c0a4d1 Mon Sep 17 00:00:00 2001
From: Lexi Winter <lexi@le-fay.org>
Date: Sun, 29 Jun 2025 19:25:29 +0100
Subject: import catch2 3.8.1

---
 src/catch2/internal/catch_list.cpp | 120 +++++++++++++++++++++++++++++++++++++
 1 file changed, 120 insertions(+)
 create mode 100644 src/catch2/internal/catch_list.cpp

(limited to 'src/catch2/internal/catch_list.cpp')

diff --git a/src/catch2/internal/catch_list.cpp b/src/catch2/internal/catch_list.cpp
new file mode 100644
index 0000000..5bd06a2
--- /dev/null
+++ b/src/catch2/internal/catch_list.cpp
@@ -0,0 +1,120 @@
+
+//              Copyright Catch2 Authors
+// Distributed under the Boost Software License, Version 1.0.
+//   (See accompanying file LICENSE.txt or copy at
+//        https://www.boost.org/LICENSE_1_0.txt)
+
+// SPDX-License-Identifier: BSL-1.0
+#include <catch2/internal/catch_list.hpp>
+
+#include <catch2/interfaces/catch_interfaces_registry_hub.hpp>
+#include <catch2/interfaces/catch_interfaces_reporter.hpp>
+#include <catch2/interfaces/catch_interfaces_reporter_factory.hpp>
+#include <catch2/internal/catch_test_case_registry_impl.hpp>
+#include <catch2/internal/catch_reporter_registry.hpp>
+#include <catch2/internal/catch_move_and_forward.hpp>
+#include <catch2/internal/catch_case_insensitive_comparisons.hpp>
+#include <catch2/catch_config.hpp>
+#include <catch2/catch_test_case_info.hpp>
+
+namespace Catch {
+    namespace {
+
+        void listTests(IEventListener& reporter, IConfig const& config) {
+            auto const& testSpec = config.testSpec();
+            auto matchedTestCases = filterTests(getAllTestCasesSorted(config), testSpec, config);
+            reporter.listTests(matchedTestCases);
+        }
+
+        void listTags(IEventListener& reporter, IConfig const& config) {
+            auto const& testSpec = config.testSpec();
+            std::vector<TestCaseHandle> matchedTestCases = filterTests(getAllTestCasesSorted(config), testSpec, config);
+
+            std::map<StringRef, TagInfo, Detail::CaseInsensitiveLess> tagCounts;
+            for (auto const& testCase : matchedTestCases) {
+                for (auto const& tagName : testCase.getTestCaseInfo().tags) {
+                    auto it = tagCounts.find(tagName.original);
+                    if (it == tagCounts.end())
+                        it = tagCounts.insert(std::make_pair(tagName.original, TagInfo())).first;
+                    it->second.add(tagName.original);
+                }
+            }
+
+            std::vector<TagInfo> infos; infos.reserve(tagCounts.size());
+            for (auto& tagc : tagCounts) {
+                infos.push_back(CATCH_MOVE(tagc.second));
+            }
+
+            reporter.listTags(infos);
+        }
+
+        void listReporters(IEventListener& reporter) {
+            std::vector<ReporterDescription> descriptions;
+
+            auto const& factories = getRegistryHub().getReporterRegistry().getFactories();
+            descriptions.reserve(factories.size());
+            for (auto const& fac : factories) {
+                descriptions.push_back({ fac.first, fac.second->getDescription() });
+            }
+
+            reporter.listReporters(descriptions);
+        }
+
+        void listListeners(IEventListener& reporter) {
+            std::vector<ListenerDescription> descriptions;
+
+            auto const& factories =
+                getRegistryHub().getReporterRegistry().getListeners();
+            descriptions.reserve( factories.size() );
+            for ( auto const& fac : factories ) {
+                descriptions.push_back( { fac->getName(), fac->getDescription() } );
+            }
+
+            reporter.listListeners( descriptions );
+        }
+
+    } // end anonymous namespace
+
+    void TagInfo::add( StringRef spelling ) {
+        ++count;
+        spellings.insert( spelling );
+    }
+
+    std::string TagInfo::all() const {
+        // 2 per tag for brackets '[' and ']'
+        size_t size =  spellings.size() * 2;
+        for (auto const& spelling : spellings) {
+            size += spelling.size();
+        }
+
+        std::string out; out.reserve(size);
+        for (auto const& spelling : spellings) {
+            out += '[';
+            out += spelling;
+            out += ']';
+        }
+        return out;
+    }
+
+    bool list( IEventListener& reporter, Config const& config ) {
+        bool listed = false;
+        if (config.listTests()) {
+            listed = true;
+            listTests(reporter, config);
+        }
+        if (config.listTags()) {
+            listed = true;
+            listTags(reporter, config);
+        }
+        if (config.listReporters()) {
+            listed = true;
+            listReporters(reporter);
+        }
+        if ( config.listListeners() ) {
+            listed = true;
+            listListeners( reporter );
+        }
+        return listed;
+    }
+
+} // end namespace Catch
-- 
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