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