[Analyzers][CPP] Turn on rule 26497 (#23119)

* Turn on warning 26497
This function function-name could be marked constexpr if compile-time evaluation is desired.

* C++20 has constexpr swap

* as constexpr is not only for compile time,
make all functions that can be constexpr constexpr

* constexpr functions are implicity inline

CppRuleSet.ruleset

@@ -84,7 +84,7 @@
     <Rule Id="C26494" Action="Hidden" />
     <Rule Id="C26495" Action="Error" />
     <Rule Id="C26496" Action="Hidden" />
-    <Rule Id="C26497" Action="Hidden" />
+    <Rule Id="C26497" Action="Error" />
     <Rule Id="C26498" Action="Error" />
     <Rule Id="C26800" Action="Hidden" />
     <Rule Id="C26810" Action="Error" />

src/common/notifications/notifications.cpp

@@ -206,7 +206,7 @@ void notifications::show_toast(std::wstring message, std::wstring title, toast_p
     show_toast_with_activations(std::move(message), std::move(title), {}, {}, std::move(params));
 }
 
-inline void xml_escape(std::wstring data)
+constexpr inline void xml_escape(std::wstring data)
 {
     std::wstring buffer;
     buffer.reserve(data.size());

src/common/utils/exec.h

@@ -4,8 +4,9 @@
 #include <Windows.h>
 
 // disable warning 26471 - Don't use reinterpret_cast. A cast from void* can use static_cast
+// Disable 26497 for winrt - This function function-name could be marked constexpr if compile-time evaluation is desired.
 #pragma warning(push)
-#pragma warning(disable: 26471)
+#pragma warning(disable : 26471 26497)
 #include <wil/resource.h>
 #pragma warning(pop)
 

src/modules/ShortcutGuide/ShortcutGuide/shortcut_guide.cpp

@@ -115,12 +115,12 @@ namespace
         return true;
     }
 
-    bool isWin(int key)
+    constexpr bool isWin(int key)
     {
         return key == VK_LWIN || key == VK_RWIN;
     }
 
-    bool isKeyDown(LowlevelKeyboardEvent event)
+    constexpr bool isKeyDown(LowlevelKeyboardEvent event)
     {
         return event.wParam == WM_KEYDOWN || event.wParam == WM_SYSKEYDOWN;
     }

src/modules/fancyzones/FancyZonesLib/MonitorUtils.cpp

@@ -207,7 +207,7 @@ namespace MonitorUtils
             return { .id = str.substr(0, dividerPos), .instanceId = str.substr(dividerPos + 1) };
         }
 
-        inline bool not_digit(wchar_t ch)
+        constexpr inline bool not_digit(wchar_t ch)
         {
             return '0' <= ch && ch <= '9';
         }

src/modules/fancyzones/FancyZonesLib/util.cpp

@@ -248,32 +248,6 @@ namespace FancyZonesUtils
         return closestIdx;
     }
 
-    RECT PrepareRectForCycling(RECT windowRect, RECT workAreaRect, DWORD vkCode) noexcept
-    {
-        LONG deltaX = 0, deltaY = 0;
-        switch (vkCode)
-        {
-        case VK_UP:
-            deltaY = workAreaRect.bottom - workAreaRect.top;
-            break;
-        case VK_DOWN:
-            deltaY = workAreaRect.top - workAreaRect.bottom;
-            break;
-        case VK_LEFT:
-            deltaX = workAreaRect.right - workAreaRect.left;
-            break;
-        case VK_RIGHT:
-            deltaX = workAreaRect.left - workAreaRect.right;
-        }
-
-        windowRect.left += deltaX;
-        windowRect.right += deltaX;
-        windowRect.top += deltaY;
-        windowRect.bottom += deltaY;
-
-        return windowRect;
-    }
-
     void SwallowKey(const WORD key) noexcept
     {
         INPUT inputKey[1] = {};

src/modules/fancyzones/FancyZonesLib/util.h

@@ -93,7 +93,7 @@ namespace FancyZonesUtils
         }
     }
 
-    inline BYTE OpacitySettingToAlpha(int opacity)
+    constexpr inline BYTE OpacitySettingToAlpha(int opacity)
     {
         return static_cast<BYTE>(opacity * 2.55);
     }
@@ -168,6 +168,32 @@ namespace FancyZonesUtils
         return result;
     }
 
+    constexpr RECT PrepareRectForCycling(RECT windowRect, RECT workAreaRect, DWORD vkCode) noexcept
+    {
+        LONG deltaX = 0, deltaY = 0;
+        switch (vkCode)
+        {
+        case VK_UP:
+            deltaY = workAreaRect.bottom - workAreaRect.top;
+            break;
+        case VK_DOWN:
+            deltaY = workAreaRect.top - workAreaRect.bottom;
+            break;
+        case VK_LEFT:
+            deltaX = workAreaRect.right - workAreaRect.left;
+            break;
+        case VK_RIGHT:
+            deltaX = workAreaRect.left - workAreaRect.right;
+        }
+
+        windowRect.left += deltaX;
+        windowRect.right += deltaX;
+        windowRect.top += deltaY;
+        windowRect.bottom += deltaY;
+
+        return windowRect;
+    }
+
     UINT GetDpiForMonitor(HMONITOR monitor) noexcept;
     void OrderMonitors(std::vector<std::pair<HMONITOR, RECT>>& monitorInfo);
 
@@ -175,7 +201,6 @@ namespace FancyZonesUtils
     std::optional<GUID> GuidFromString(const std::wstring& str) noexcept;
     std::optional<std::wstring> GuidToString(const GUID& guid) noexcept;
 
-    RECT PrepareRectForCycling(RECT windowRect, RECT workAreaRect, DWORD vkCode) noexcept;
     size_t ChooseNextZoneByPosition(DWORD vkCode, RECT windowRect, const std::vector<RECT>& zoneRects) noexcept;
 
     void SwallowKey(const WORD key) noexcept;

src/modules/keyboardmanager/KeyboardManagerEditorLibrary/KeyDropDownControl.cpp

@@ -421,8 +421,12 @@ void KeyDropDownControl::AddShortcutToControl(Shortcut shortcut, StackPanel tabl
     }
 }
 
+// Disable 26497 this function should be evaluated at compile time
+#pragma warning(push)
+#pragma warning(disable : 26497)
 // Get number of selected keys. Do not count -1 and 0 values as they stand for Not selected and None
 int KeyDropDownControl::GetNumberOfSelectedKeys(std::vector<int32_t> keyCodes)
 {
     return (int)std::count_if(keyCodes.begin(), keyCodes.end(), [](int32_t a) { return a != -1 && a != 0; });
 }
+#pragma warning(pop)

src/modules/keyboardmanager/KeyboardManagerEditorLibrary/XamlBridge.cpp

@@ -165,7 +165,7 @@ int XamlBridge::MessageLoop()
 
 static const WPARAM invalidKey = (WPARAM)-1;
 
-WPARAM GetKeyFromReason(winrt::Windows::UI::Xaml::Hosting::XamlSourceFocusNavigationReason reason)
+constexpr WPARAM GetKeyFromReason(winrt::Windows::UI::Xaml::Hosting::XamlSourceFocusNavigationReason reason)
 {
     auto key = invalidKey;
     if (reason == winrt::Windows::UI::Xaml::Hosting::XamlSourceFocusNavigationReason::Last || reason == winrt::Windows::UI::Xaml::Hosting::XamlSourceFocusNavigationReason::First)

src/modules/keyboardmanager/common/Shortcut.cpp

@@ -592,13 +592,13 @@ bool Shortcut::CheckModifiersKeyboardState(KeyboardManagerInput::InputInterface&
 }
 
 // Helper method for checking if a key is in a range for cleaner code
-bool in_range(DWORD key, DWORD a, DWORD b)
+constexpr bool in_range(DWORD key, DWORD a, DWORD b)
 {
     return (key >= a && key <= b);
 }
 
 // Helper method for checking if a key is equal to a value for cleaner code
-bool equals(DWORD key, DWORD a)
+constexpr bool equals(DWORD key, DWORD a)
 {
     return (key == a);
 }

src/modules/videoconference/VideoConferenceShared/Logging.h

@@ -41,12 +41,12 @@ std::string toMediaTypeString(GUID subtype);
 #define LOG(str) LogToFile(str, false);
 #endif
 
-inline bool failed(HRESULT hr)
+constexpr inline bool failed(HRESULT hr)
 {
     return hr != S_OK;
 }
 
-inline bool failed(bool val)
+constexpr inline bool failed(bool val)
 {
     return val == false;
 }

tools/WebcamReportTool/DirectShowUtils.h

@@ -6,8 +6,9 @@
 #include <dshow.h>
 
 // disable warning 26471 - Don't use reinterpret_cast. A cast from void* can use static_cast
+// Disable 26497 for winrt - This function function-name could be marked constexpr if compile-time evaluation is desired.
 #pragma warning(push)
-#pragma warning(disable: 26471)
+#pragma warning(disable : 26471 26497)
 #include <wil/com.h>
 #pragma warning(push)
 

tools/WebcamReportTool/main.cpp

@@ -6,8 +6,9 @@
 #include <cguid.h>
 
 // disable warning 26471 - Don't use reinterpret_cast. A cast from void* can use static_cast
+// Disable 26497 for winrt - This function function-name could be marked constexpr if compile-time evaluation is desired.
 #pragma warning(push)
-#pragma warning(disable: 26471)
+#pragma warning(disable : 26471 26497)
 #include <wil/com.h>
 #pragma warning(push)