AK: Implement demangle() for MSVC ABI

This implements demangle() using Windows API. Also some rudimentary test is provided.
Author: https://github.com/tomaszstrejczek 🔰 Commit: e03c558a0a Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5000 Reviewed-by: https://github.com/ADKaster ✅ Reviewed-by: https://github.com/R-Goc
2025-09-01 07:07:49 +00:00 · 2025-06-04 19:43:17 +02:00 · 2025-06-04 19:43:17 +02:00 · e03c558a0a · 2025-06-18 00:40:29 +00:00
commit e03c558a0a
parent 1861f24979
6 changed files with 107 additions and 6 deletions
--- a/Tests/AK/TestDelayLoadWindows.cpp
+++ b/Tests/AK/TestDelayLoadWindows.cpp
@ -0,0 +1,43 @@
+/*
+ * Copyright (c) 2025, Tomasz Strejczek
+ *
+ * SPDX-License-Identifier: BSD-2-Clause
+ */
+
+#include <LibTest/TestCase.h>
+
+#include <AK/Demangle.h>
+
+#include <AK/Windows.h>
+#include <psapi.h>
+
+static bool is_dll_loaded(wchar_t const* dll_name)
+{
+    HMODULE mods[1024];
+    DWORD needed;
+    HANDLE process = GetCurrentProcess();
+
+    if (EnumProcessModules(process, mods, sizeof(mods), &needed)) {
+        for (unsigned int i = 0; i < (needed / sizeof(HMODULE)); i++) {
+            wchar_t mod_name[MAX_PATH];
+            if (GetModuleFileNameExW(process, mods[i], mod_name,
+                    sizeof(mod_name) / sizeof(wchar_t))) {
+                wchar_t const* base = wcsrchr(mod_name, L'\\');
+                if (base && _wcsicmp(base + 1, dll_name) == 0) {
+                    return true;
+                }
+            }
+        }
+    }
+    return false;
+}
+
+TEST_CASE(class_method)
+{
+    auto test_string = "?unicode_substring_view@Utf16View@AK@@QEBA?AV12@_K0@Z"sv;
+    auto expected_result = "public: class AK::Utf16View __cdecl AK::Utf16View::unicode_substring_view(unsigned __int64,unsigned __int64)const __ptr64"sv;
+
+    EXPECT_EQ(false, is_dll_loaded(L"dbghelp.dll"));
+    EXPECT_EQ(expected_result, demangle(test_string));
+    EXPECT_EQ(true, is_dll_loaded(L"dbghelp.dll"));
+}