Feature/source downstream compiler (#1153)

* CPPCompiler -> DownstreamCompiler

* Added DownstreamCompileResult to start abstraction such that we don't need files.

* * Split out slang-blob.cpp
* Made CompileResult hold a DownstreamCompileResult - for access to binary or ISlangSharedLibrary

* Keep temporary files in scope.

* Add a hash to the hex dump stream.

* Move all file tracking into DownstreamCompiler.

* WIP support for nvrtc.

* WIP: Adding support for nvrtc compiler.
Adding enum types, wiring up the nvrtc into slang.

* Fix remaining CPPCompiler references.

* Fix order issue on target string matching.

* Use ISlangSharedLibrary for nvrtc.

* Use DownstreamCompiler for nvrtc.

* WIP first pass at compilation win nvrtc.

* Added testing if file is on file system into CommandLineDownstreamCompiler.
Added sourceContentsPath.

* Make test cuda-compile.cu work by just compiling not comparing output.

* Genearlize DownstreamCompiler usage.

* Fix warning on clang.

* Remove CompilerType from DownstreamCompiler.

* Use DownstreamCompiler interface for all compilers.

NOTE for FXC, DXC and GLSLANG this doesn't mean using 'compile' - it's still extracting functions from shared library.

* Replace DownstreamCompiler::SourceType -> SlangSourceLanguage

* Replace _canCompile with something data driven.

* Fix compiling on gcc/clang for DownstreamCompiler.

* Moved some text conversions into DownstreamCompiler.

* Fix problem on non-vc builds with not having return on locateCompilers for VS.

* Change so no warning for code not reachable on locateCompilers for vs.

3 files changed, 9 insertions, 47 deletions

diff --git a/tools/slang-test/slang-test-main.cpp b/tools/slang-test/slang-test-main.cpp
index 44cc73b4e..cdfe6a1a7 100644
--- a/tools/slang-test/slang-test-main.cpp
+++ b/tools/slang-test/slang-test-main.cpp
@@ -495,44 +495,6 @@ static bool _hasOption(const List<String>& args, const String& argName)
     return args.indexOf(argName) != Index(-1);
 }
 
-static SlangPassThrough _toPassThroughType(const UnownedStringSlice& slice)
-{
-    if (slice == "dxc")
-    {
-        return SLANG_PASS_THROUGH_DXC;
-    }
-    else if (slice == "fxc")
-    {
-        return SLANG_PASS_THROUGH_FXC;
-    }
-    else if (slice == "glslang")
-    {
-        return SLANG_PASS_THROUGH_GLSLANG;
-    }
-    else if (slice == "c" || slice == "cpp")
-    {
-        return SLANG_PASS_THROUGH_GENERIC_C_CPP; 
-    }
-    else if (slice == "clang")
-    {
-        return SLANG_PASS_THROUGH_CLANG;
-    }
-    else if (slice == "gcc")
-    {
-        return SLANG_PASS_THROUGH_GCC;
-    }
-    else if (slice == "vs" || slice == "visualstudio")
-    {
-        return SLANG_PASS_THROUGH_VISUAL_STUDIO;
-    }
-    else if (slice == "nvrtc")
-    {
-        return SLANG_PASS_THROUGH_NVRTC;
-    }
-
-    return SLANG_PASS_THROUGH_NONE;
-}
-
 static PassThroughFlags _getPassThroughFlagsForTarget(SlangCompileTarget target)
 {
     switch (target)
@@ -740,7 +702,7 @@ static SlangResult _extractSlangCTestRequirements(const CommandLine& cmdLine, Te
         String passThrough;
         if (SLANG_SUCCEEDED(_extractArg(cmdLine, "-pass-through", passThrough)))
         {
-            ioRequirements->addUsedBackEnd(_toPassThroughType(passThrough.getUnownedSlice()));
+            ioRequirements->addUsedBackEnd(DownstreamCompiler::getPassThroughFromName(passThrough.getUnownedSlice()));
         }
     }
 
@@ -1293,7 +1255,7 @@ static String _calcModulePath(const TestInput& input)
 
 static TestResult runCPPCompilerCompile(TestContext* context, TestInput& input)
 {
-    DownstreamCompiler* compiler = context->getDefaultCompiler(DownstreamCompiler::SourceType::CPP);   
+    DownstreamCompiler* compiler = context->getDefaultCompiler(SLANG_SOURCE_LANGUAGE_CPP);
     if (!compiler)
     {
         return TestResult::Ignored;
@@ -1335,7 +1297,7 @@ static TestResult runCPPCompilerCompile(TestContext* context, TestInput& input)
 
 static TestResult runCPPCompilerSharedLibrary(TestContext* context, TestInput& input)
 {
-    DownstreamCompiler* compiler = context->getDefaultCompiler(DownstreamCompiler::SourceType::CPP);
+    DownstreamCompiler* compiler = context->getDefaultCompiler(SLANG_SOURCE_LANGUAGE_CPP);
     if (!compiler)
     {
         return TestResult::Ignored;
@@ -1365,7 +1327,7 @@ static TestResult runCPPCompilerSharedLibrary(TestContext* context, TestInput& i
     // Set up the compilation options
     DownstreamCompiler::CompileOptions options;
 
-    options.sourceType = (ext == "c") ? DownstreamCompiler::SourceType::C : DownstreamCompiler::SourceType::CPP;
+    options.sourceLanguage = (ext == "c") ? SLANG_SOURCE_LANGUAGE_C : SLANG_SOURCE_LANGUAGE_CPP;
 
     // Build a shared library
     options.targetType = DownstreamCompiler::TargetType::SharedLibrary;
@@ -1453,7 +1415,7 @@ static TestResult runCPPCompilerSharedLibrary(TestContext* context, TestInput& i
 
 static TestResult runCPPCompilerExecute(TestContext* context, TestInput& input)
 {
-    DownstreamCompiler* compiler = context->getDefaultCompiler(DownstreamCompiler::SourceType::CPP);
+    DownstreamCompiler* compiler = context->getDefaultCompiler(SLANG_SOURCE_LANGUAGE_CPP);
     if (!compiler)
     {
         return TestResult::Ignored;
@@ -1487,7 +1449,7 @@ static TestResult runCPPCompilerExecute(TestContext* context, TestInput& input)
     // Set up the compilation options
     DownstreamCompiler::CompileOptions options;
 
-    options.sourceType = (ext == "c") ? DownstreamCompiler::SourceType::C : DownstreamCompiler::SourceType::CPP;
+    options.sourceLanguage = (ext == "c") ? SLANG_SOURCE_LANGUAGE_C : SLANG_SOURCE_LANGUAGE_CPP;
 
     // Compile this source
     options.sourceFiles.add(filePath);
diff --git a/tools/slang-test/test-context.cpp b/tools/slang-test/test-context.cpp
index ee5629900..0a0931596 100644
--- a/tools/slang-test/test-context.cpp
+++ b/tools/slang-test/test-context.cpp
@@ -104,9 +104,9 @@ DownstreamCompilerSet* TestContext::getCompilerSet()
     return compilerSet;
 }
 
-Slang::DownstreamCompiler* TestContext::getDefaultCompiler(DownstreamCompiler::SourceType sourceType)
+Slang::DownstreamCompiler* TestContext::getDefaultCompiler(SlangSourceLanguage sourceLanguage)
 {
     DownstreamCompilerSet* set = getCompilerSet();
-    return set ? set->getDefaultCompiler(sourceType) : nullptr;
+    return set ? set->getDefaultCompiler(sourceLanguage) : nullptr;
 }
 
diff --git a/tools/slang-test/test-context.h b/tools/slang-test/test-context.h
index 520e0bf1d..e10b8d60b 100644
--- a/tools/slang-test/test-context.h
+++ b/tools/slang-test/test-context.h
@@ -97,7 +97,7 @@ class TestContext
 
         /// Get compiler set
     Slang::DownstreamCompilerSet* getCompilerSet();
-    Slang::DownstreamCompiler* getDefaultCompiler(Slang::DownstreamCompiler::SourceType sourceType);
+    Slang::DownstreamCompiler* getDefaultCompiler(SlangSourceLanguage sourceLanguage);
 
         /// Ctor
     TestContext();