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, 44 insertions, 0 deletions

diff --git a/source/core/slang-std-writers.h b/source/core/slang-std-writers.h
new file mode 100644
index 000000000..d580842eb
--- /dev/null
+++ b/source/core/slang-std-writers.h
@@ -0,0 +1,44 @@
+#ifndef SLANG_STD_WRITERS_H
+#define SLANG_STD_WRITERS_H
+
+#include "slang-writer.h"
+#include "../../slang-com-ptr.h"
+
+namespace Slang
+{
+
+/* Holds standard writers for the channels */
+class StdWriters
+{
+public:
+    ISlangWriter * getWriter(SlangWriterChannel chan) const { return m_writers[chan]; }
+    void setWriter(SlangWriterChannel chan, ISlangWriter* writer) { m_writers[chan] = writer; }
+
+        /// Set the writers on the SlangCompileRequest
+    void setRequestWriters(SlangCompileRequest* request);
+
+        /// Ctor
+    StdWriters() {}
+
+        /// Initialize a default context
+    static StdWriters* initDefault();
+
+    static StdWriters* getDefault();
+
+    static StdWriters* getSingleton() { return s_singleton; }
+    static void setSingleton(StdWriters* context) { s_singleton = context;  }
+
+    static WriterHelper getError() { return getSingleton()->getWriter(SLANG_WRITER_CHANNEL_STD_ERROR); }
+    static WriterHelper getOut() { return getSingleton()->getWriter(SLANG_WRITER_CHANNEL_STD_OUTPUT); }
+    static WriterHelper getDiagnostic() { return getSingleton()->getWriter(SLANG_WRITER_CHANNEL_DIAGNOSTIC); }
+
+protected:
+
+    ComPtr<ISlangWriter> m_writers[SLANG_WRITER_CHANNEL_COUNT_OF]; 
+    
+    static StdWriters* s_singleton;
+};
+
+}
+
+#endif