15.4.242  src/lib/compiler/back/low/emit/asm-stream.pkg

## asm-stream.pkg

# Compiled by:
#     src/lib/compiler/back/low/lib/lowhalf.lib



# asm_stream - this package is available to all codererators.
#             Typically asm_out_stream is rebound to a file.

stipulate
    package fil =  file__premicrothread;                                # file__premicrothread  is from   src/lib/std/src/posix/file--premicrothread.pkg
herein
    api Asm_Stream {
        asm_out_stream:  Ref(  fil::Output_Stream );
        with_stream:           fil::Output_Stream -> (X -> Y) -> X -> Y;
    };
end;

stipulate
    package fil =  file__premicrothread;                                # file__premicrothread  is from   src/lib/std/src/posix/file--premicrothread.pkg
herein

    package   asm_stream
    : (weak)  Asm_Stream                                                        # Asm_Stream            is from   src/lib/compiler/back/low/emit/asm-stream.pkg
    {
        asm_out_stream =  REF  fil::stdout;                                     # More icky thread-hostile global mutable state. XXX SUCKO FIXME. 
        #
        fun with_stream  stream  body  x
            =
            {   s =  *asm_out_stream; 
                #
                asm_out_stream :=  stream;

                (   body x
                    before
                        asm_out_stream :=  s
                )
                except e
                    =
                    {   asm_out_stream :=  s;
                        #
                        raise exception e;
                    };
            };   
    };
end;




## COPYRIGHT (c) 1996 Bell Laboratories.
## Subsequent changes by Jeff Prothero Copyright (c) 2010-2013,
## released per terms of SMLNJ-COPYRIGHT.