Refactor Subzero initialization and add a browser callback handler.

src/IceCompiler.h

Index: src/IceCompiler.h
diff --git a/src/IceCompiler.h b/src/IceCompiler.h
new file mode 100644
index 0000000000000000000000000000000000000000..a390d8e856f2f554e331665c6af5bbf4fbe43cb4
--- /dev/null
+++ b/src/IceCompiler.h
@@ -0,0 +1,43 @@
+//===- subzero/src/IceCompiler.h - Compiler driver --------------*- C++ -*-===//
+//
+//                        The Subzero Code Generator
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the driver for translating bitcode to native code.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef SUBZERO_SRC_ICECOMPILER_H
+#define SUBZERO_SRC_ICECOMPILER_H
+
+#include "IceDefs.h"
+
+namespace Ice {
+
+class CompileServer;
+
+// A compiler driver. It may be called to handle a single compile request.
+class Compiler {
+  Compiler(const Compiler &) = delete;
+  Compiler &operator=(const Compiler &) = delete;
+
+public:
+  Compiler() : ReturnValue(0) {}
+
+  void run(int argc, char **argv, CompileServer &Server);
+
+  int getReturnValue() const { return ReturnValue; }
+
+private:
+  void setReturnValue(int V) { ReturnValue = V; }

[jvoung (off chromium), 2015/03/13 02:07:52]

might stash / pull from the global context instead, but haven't set that up yet

+
+  int ReturnValue;
+};
+
+} // end of namespace Ice
+
+#endif // SUBZERO_SRC_ICECOMPILER_H