diff ppc/main.ml @ 0:bfdcc3820b32

Basis
author Mike Spivey <mike@cs.ox.ac.uk>
date Thu, 05 Oct 2017 08:04:15 +0100
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--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ppc/main.ml	Thu Oct 05 08:04:15 2017 +0100
@@ -0,0 +1,54 @@
+(* ppc/main.ml *)
+(* Copyright (c) 2017 J. M. Spivey *)
+
+open Print
+open Mach
+open Source
+
+let debug = ref 0
+
+let usage = "Usage: ppc [-b] [-d n] [-O] file.p"
+
+let spec =
+  Arg.align
+    ["-b", Arg.Unit (function () -> Kgen.boundchk := true), 
+        " enable bound checks";
+      "-d", Arg.Int (function x -> debug := x), "n set debug level";
+      "-O", Arg.Set Kgen.optflag, " enable peephole optimiser"]
+
+let main () =
+  let fns = ref [] in
+  Arg.parse spec (function s -> fns := !fns @ [s]) usage;
+  if List.length !fns <> 1 then begin
+    fprintf stderr "$\n" [fStr usage]; exit 2
+  end;
+  let in_file = List.hd !fns in
+  let in_chan = open_in in_file in
+  let lexbuf = Lexing.from_channel in_chan in
+  Source.init in_file in_chan;
+  Peepopt.debug := !debug;
+  ignore (Parsing.set_trace (!debug > 2));
+
+  let prog = 
+    try Parser.program Lexer.token lexbuf with
+      Parsing.Parse_error -> 
+        let tok = Lexing.lexeme lexbuf in
+        Source.err_message "syntax error at token '$'" [fStr tok] !Lexer.lineno;
+        exit 1 in
+
+  if !debug > 0 then Tree.print_tree stdout "" prog;
+
+  begin try Check.annotate prog with
+    Check.Sem_error (fmt, args, ln) ->
+      Source.err_message fmt args ln;
+      exit 1
+  end;
+
+  printf "MODULE Main 0 0\n" [];
+  printf "IMPORT Lib 0\n" [];
+  printf "ENDHDR\n\n" [];
+  Kgen.translate prog;
+  printf "! End\n" [];
+  exit 0
+
+let ppc = main ()