Feature/remove app context (#765)

* Remove AppContext. Use StdChannels to hold writers, and TestToolUtil to hold test tool specific functionality.

* StdChannels -> StdWriters

* getStdOut -> getOut, getStdError -> getError

1 files changed, 43 insertions, 0 deletions

diff --git a/source/core/slang-std-writers.cpp b/source/core/slang-std-writers.cpp
new file mode 100644
index 000000000..963af9ef5
--- /dev/null
+++ b/source/core/slang-std-writers.cpp
@@ -0,0 +1,43 @@
+
+#include "slang-std-writers.h"
+
+namespace Slang
+{
+
+/* static */StdWriters* StdWriters::s_singleton = nullptr;
+
+/* static */StdWriters* StdWriters::getDefault()
+{
+    static StdWriters* 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 StdWriters 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 */StdWriters* StdWriters::initDefault()
+{
+    StdWriters* context = getDefault();
+    setSingleton(context);
+    return context;
+}
+
+void StdWriters::setRequestWriters(SlangCompileRequest* request)
+{
+    for (int i = 0; i < SLANG_WRITER_CHANNEL_COUNT_OF; ++i)
+    {
+        spSetWriter(request, SlangWriterChannel(i), m_writers[i]);
+    }
+}
+
+}
+