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, 67 insertions, 0 deletions

diff --git a/source/core/slang-app-context.cpp b/source/core/slang-app-context.cpp
new file mode 100644
index 000000000..2b3f32cbc
--- /dev/null
+++ b/source/core/slang-app-context.cpp
@@ -0,0 +1,67 @@
+
+#include "slang-app-context.h"
+
+#include "slang-writer.h"
+
+namespace Slang
+{
+
+/* static */AppContext* AppContext::s_singleton = nullptr;
+
+
+/* static */AppContext* AppContext::getDefault()
+{
+    static AppContext* s_context = nullptr;
+
+    if (!s_context)
+    {
+        static FileWriter s_stdError(stderr, WriterFlag::IsStatic | WriterFlag::IsUnowned | WriterFlag::AutoFlush);
+        static FileWriter s_stdOut(stdout, WriterFlag::IsStatic | WriterFlag::IsUnowned | WriterFlag::AutoFlush);
+
+        static AppContext s_contextVar;
+        s_context = &s_contextVar;
+
+        s_context->setWriter(SLANG_WRITER_CHANNEL_STD_ERROR, &s_stdError);
+        s_context->setWriter(SLANG_WRITER_CHANNEL_STD_OUTPUT, &s_stdOut);
+    }
+    return s_context;
+}
+
+/* static */AppContext* AppContext::initDefault()
+{
+    AppContext* context = getDefault();
+    setSingleton(context);
+    return context;
+}
+
+/* static */int AppContext::getReturnCode(SlangResult res)
+{
+    if (SLANG_SUCCEEDED(res))
+    {
+        return 0;
+    }
+    else if (res == SLANG_E_INTERNAL_FAIL)
+    {
+        return -1;
+    }
+    return 1;
+}
+
+void AppContext::setRequestWriters(SlangCompileRequest* request)
+{
+    for (int i = 0; i < SLANG_WRITER_CHANNEL_COUNT_OF; ++i)
+    {
+        if (m_replaceWriterFlags & (1 << i))
+        {
+            spSetWriter(request, SlangWriterChannel(i), m_writers[i]);
+        }
+    }
+}
+
+void AppContext::configureRequest(SlangCompileRequest* request)
+{
+    setRequestWriters(request);
+}
+
+}
+