Running tests in slang-test process (#740)

* First pass at having an interface to write text to that can be replaced.
Simplifed and made more rigerous the interface used to write formatted strings.

* Added AppContext to simplify setting up and parsing around of streams.

* Added more simplified way to get the std error/out from AppContext.

* Work in progress using dll for tools to speed up testing.

* First pass at ISlangWriter interface.

* Added support for writing VaArgs.
Added NullWriter.

* Use ISlangWriter for output.

* Use ISlangWriter for output - replacing OutputCallback.
Make IRDump go to ISlangWriter

* SlangWriterTargetType -> SlangWriterChannel
Improvements around AppContext

* Shared library working with slang-reflection-test.

* Dll testing working for render-test.

* Include va_list definintion from header.

* Fix errors from clang.

* Fix typo for linux.

* Added -usexes option

* Fix typo.

* Fix arguments problem on linux.

* Fix typo for linux.

* Add windows tool shared library projects.

* Fix warning from x86 win build.
Fix signed warning from slang-test/main.cpp

* First attempt at getting premake to work on travis, and run tests.

* Try moving build out into script.

* Invoke bash scripts so they don't have to be executable.

* Drive configuration/tests from env parameters set by travis

* Try using source to run travis tests.

* Remove the build.linux directory - but doing so will overwrite Makefile.

* Made -fno-delete-null-pointer-checks gcc only.

* Try to fix warning from -fno-delete-null-pointer-checks

* Turn of warnings for unknown switches.

* Try to make premake choose the correct tooling.

* Disabled missing braces warning.

* Disable -Wundefined-var-template on clang.

* -Wunused-function disabled for clang.

* Fix typo due to SlangBool.

* Remove this nullptr tests.

* "-Wno-unused-private-field" for clang.

* Added "-Wno-undefined-bool-conversion"

* Add DominatorList::end fix.

* Split scripts into travis_build.sh travis_test.sh

* Fix gcc/clang template pre-declaration issue around QualType.

* Fix premake to build such that pthread correctly links with slang-glslang

1 files changed, 20 insertions, 0 deletions

diff --git a/source/slang/compiler.h b/source/slang/compiler.h
index fbd6b3f15..2a9b60d9b 100644
--- a/source/slang/compiler.h
+++ b/source/slang/compiler.h
@@ -212,6 +212,20 @@ namespace Slang
         Precise = SLANG_FLOATING_POINT_MODE_PRECISE,
     };
 
+    enum class WriterChannel : SlangWriterChannel
+    {
+        Diagnostic = SLANG_WRITER_CHANNEL_DIAGNOSTIC,
+        StdOutput = SLANG_WRITER_CHANNEL_STD_OUTPUT,
+        StdError = SLANG_WRITER_CHANNEL_STD_ERROR,
+        CountOf = SLANG_WRITER_CHANNEL_COUNT_OF,
+    };
+
+    enum class WriterMode : SlangWriterMode
+    {
+        Text = SLANG_WRITER_MODE_TEXT,
+        Binary = SLANG_WRITER_MODE_BINARY,
+    };
+
     // A request to generate output in some target format
     class TargetRequest : public RefObject
     {
@@ -401,6 +415,12 @@ namespace Slang
         /// or a wrapped impl that makes fileSystem operate as fileSystemExt
         ComPtr<ISlangFileSystemExt> fileSystemExt;
 
+        // For output
+        ComPtr<ISlangWriter> m_writers[SLANG_WRITER_CHANNEL_COUNT_OF];
+
+        void setWriter(WriterChannel chan, ISlangWriter* writer);
+        ISlangWriter* getWriter(WriterChannel chan) const { return m_writers[int(chan)]; }
+
         /// Load a file into memory using the configured file system.
         ///
         /// @param path The path to attempt to load from