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C++/WinRT ABI interop improvements #1608

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C++/WinRT ABI interop improvements #1608

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2eab28a
Add _hs literal for compile-time fast-pass HSTRING
jonwis Jul 16, 2026
a889be0
Add make_ready for pre-completed async operations
jonwis Jul 16, 2026
390e118
Buffer range-for iteration over non-GetAt collections
jonwis Jul 16, 2026
1f16ab0
Perfect-forward make_ready value
jonwis Jul 16, 2026
0adfbeb
Make _hs a constant expression
jonwis Jul 16, 2026
71cc2c6
Box scalars locally instead of via combase PropertyValue
jonwis Jul 16, 2026
bee7550
Marshal boxed scalars by value via combase PropertyValue
jonwis Jul 17, 2026
75bf146
Box DateTime, TimeSpan, and Point in-process too
jonwis Jul 17, 2026
ab1f299
Buffer range-for over GetAt collections (batch IVector via GetMany)
jonwis Jul 17, 2026
4112ae6
Fix MSVC and clang-cl build breaks from the interop fast paths
jonwis Jul 17, 2026
6e4a578
Add optional clang compiler arg to build_test_all.cmd
jonwis Jul 17, 2026
2321741
Guard _hs test's literals using-directive for non-conforming NTTP com…
jonwis Jul 17, 2026
eb82079
Remove buffered-iterator and ready-async helpers
jonwis Jul 29, 2026
6495e48
Simplify reference_base_t and test in-proc agility
jonwis Jul 30, 2026
4f431ab
Merge remote-tracking branch 'origin/master' into user/jonwis/through…
jonwis Jul 30, 2026
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -13,7 +13,7 @@ Don't build C++/WinRT yourself - just download the latest version here: https://

## Working on the compiler

If you really want to build it yourself, the simplest way to do so is to run the `build_test_all.cmd` script in the root directory. Developers needing to work on the C++/WinRT compiler itself should go through the following steps to arrive at an efficient inner loop:
If you really want to build it yourself, the simplest way to do so is to run the `build_test_all.cmd` script in the root directory. It takes optional positional arguments: `build_test_all.cmd [platform] [configuration] [version] [clean] [compiler]`, e.g. `build_test_all.cmd x64 Debug 999.999.999.999 "" clang`. The `compiler` argument defaults to `msvc`; pass `clang` (or `clang-cl`) to build the compiler and test projects with the clang-cl toolset, matching the clang-cl leg of CI. Developers needing to work on the C++/WinRT compiler itself should go through the following steps to arrive at an efficient inner loop:

* Open a dev command prompt pointing at the root of the repo.
* Open the `cppwinrt.sln` solution.
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32 changes: 19 additions & 13 deletions build_test_all.cmd
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Expand Up @@ -4,38 +4,44 @@ set target_platform=%1
set target_configuration=%2
set target_version=%3
set clean_intermediate_files=%4
set target_compiler=%5

if "%target_platform%"=="" set target_platform=x64
if "%target_configuration%"=="" set target_configuration=Release
if "%target_version%"=="" set target_version=999.999.999.999
if "%target_compiler%"=="" set target_compiler=msvc

set compiler_props=
if /i "%target_compiler%"=="clang" set compiler_props=,Clang=1,PlatformToolset=ClangCl
if /i "%target_compiler%"=="clang-cl" set compiler_props=,Clang=1,PlatformToolset=ClangCl

if not exist ".\.nuget" mkdir ".\.nuget"
if not exist ".\.nuget\nuget.exe" powershell -Command "$ProgressPreference = 'SilentlyContinue' ; Invoke-WebRequest https://dist.nuget.org/win-x86-commandline/latest/nuget.exe -OutFile .\.nuget\nuget.exe"

call .nuget\nuget.exe restore cppwinrt.sln"
call .nuget\nuget.exe restore cppwinrt.sln
call .nuget\nuget.exe restore natvis\cppwinrtvisualizer.sln
call .nuget\nuget.exe restore test\nuget\NugetTest.sln

call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:fast_fwd
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:fast_fwd

call msbuild /p:Configuration=%target_configuration%,Platform=%target_platform%,Deployment=Component;CppWinRTBuildVersion=%target_version% natvis\cppwinrtvisualizer.sln
call msbuild /p:Configuration=%target_configuration%,Platform=%target_platform%,Deployment=Standalone;CppWinRTBuildVersion=%target_version% natvis\cppwinrtvisualizer.sln

if "%target_platform%"=="arm64" goto :eof

call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:cppwinrt
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:cppwinrt

call msbuild /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% test\nuget\NugetTest.sln

call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_nocoro
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_cpp20
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_cpp20_no_sourcelocation
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_fast
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_slow
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_module_lock_custom
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_module_lock_none
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\test_module_lock_none
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version% cppwinrt.sln /t:test\old_tests\test_old
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_nocoro
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_cpp20
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_cpp20_no_sourcelocation
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_fast
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_slow
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_module_lock_custom
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_module_lock_none
call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\test_module_lock_none
Comment on lines +43 to +44

@sylveon sylveon Aug 1, 2026

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Copilot appears right here. fix this as a drive-by?

call msbuild /m /p:Configuration=%target_configuration%,Platform=%target_platform%,CppWinRTBuildVersion=%target_version%%compiler_props% cppwinrt.sln /t:test\old_tests\test_old

call run_tests.cmd %target_platform% %target_configuration%
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