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, 60 insertions, 0 deletions

diff --git a/source/core/slang-app-context.h b/source/core/slang-app-context.h
new file mode 100644
index 000000000..9f1eb306c
--- /dev/null
+++ b/source/core/slang-app-context.h
@@ -0,0 +1,60 @@
+#ifndef SLANG_APP_CONTEXT_H
+#define SLANG_APP_CONTEXT_H
+
+#include "slang-writer.h"
+#include "../../slang-com-ptr.h"
+
+namespace Slang
+{
+
+#ifdef SLANG_SHARED_LIBRARY_TOOL
+#   define SLANG_SHARED_LIBRARY_TOOL_API SLANG_EXTERN_C SLANG_DLL_EXPORT 
+#else
+#   define SLANG_SHARED_LIBRARY_TOOL_API
+#endif
+
+/* A structure to hold general state shared across an application */
+class AppContext
+{
+public:
+    
+    ISlangWriter * getWriter(SlangWriterChannel chan) const { return m_writers[chan]; }
+    void setWriter(SlangWriterChannel chan, ISlangWriter* writer) { m_writers[chan] = writer; }
+
+        /// Make modifications to the request
+    void configureRequest(SlangCompileRequest* request);
+
+    void setRequestWriters(SlangCompileRequest* request);
+
+    void setReplaceWriterFlagsAll() { setReplaceWriterFlags((1 << SLANG_WRITER_CHANNEL_COUNT_OF) - 1); }
+    void setReplaceWriterFlags(int flags) { m_replaceWriterFlags = flags;  }
+    int getReplaceWriterFlags() const { return m_replaceWriterFlags;  }
+ 
+        /// Ctor
+    AppContext() : m_replaceWriterFlags(0) {}
+
+        /// Initialize a default context
+    static AppContext* initDefault();
+
+    static AppContext* getDefault();
+
+    static AppContext* getSingleton() { return s_singleton; }
+    static void setSingleton(AppContext* context) { s_singleton = context;  }
+
+    static WriterHelper getStdError() { return getSingleton()->getWriter(SLANG_WRITER_CHANNEL_STD_ERROR); }
+    static WriterHelper getStdOut() { return getSingleton()->getWriter(SLANG_WRITER_CHANNEL_STD_OUTPUT); }
+    static WriterHelper getDiagnostic() { return getSingleton()->getWriter(SLANG_WRITER_CHANNEL_DIAGNOSTIC); }
+
+    static int getReturnCode(SlangResult res);
+
+protected:
+
+    ComPtr<ISlangWriter> m_writers[SLANG_WRITER_CHANNEL_COUNT_OF]; 
+    int m_replaceWriterFlags;                                               ///< Bit for each writer
+
+    static AppContext* s_singleton;
+};
+
+}
+
+#endif