Copyright (C) 1992, Digital Equipment Corporation
All rights reserved.
See the file COPYRIGHT for a full description.
File: Host.m3
Last modified on Thu Jun 29 13:35:46 PDT 1995 by kalsow
modified on Thu Jun 15 11:50:20 PDT 1995 by ericv
modified on Tue May 25 14:27:57 PDT 1993 by muller
MODULE Host;
IMPORT File, Text, (*ETimer, M3Timers,*) M3ID, M3Compiler;
PROCEDURE Initialize (READONLY options: ARRAY OF TEXT): BOOLEAN =
BEGIN
verbose := FALSE;
errorDie := -1;
warnings := 2;
coverage := FALSE;
versionStamps := TRUE;
emitBuiltins := FALSE;
init_floats := FALSE;
vs_debug := FALSE;
load_map := TRUE;
stack_walker := TRUE;
nested_calls := FALSE;
nested_procs_first := FALSE;
inline_nested_procs := TRUE;
direct_struct_assign := TRUE;
clean_stores := FALSE;
clean_jumps := TRUE;
doNarrowChk := TRUE;
doRangeChk := TRUE;
doReturnChk := TRUE;
doCaseChk := TRUE;
doTCaseChk := TRUE;
doAsserts := TRUE;
doNilChk := TRUE;
doRaisesChk := TRUE;
doProcChk := FALSE;
doDebugs := TRUE;
new_adr := FALSE;
report_stats := FALSE;
doIncGC := TRUE;
doGenGC := TRUE;
FOR i := 0 TO LAST (options) DO
IF NOT ProcessArg (options[i]) THEN RETURN FALSE; END;
END;
RETURN TRUE;
END Initialize;
------------------------------------------------ command line arguments ---
PROCEDURE ProcessArg (t: TEXT): BOOLEAN =
VAR key: TEXT;
BEGIN
IF (t = NIL) THEN RETURN TRUE; END;
key := Text.Sub (t, 0, 2);
IF (Text.Equal (t, "-v")) THEN
verbose := TRUE;
vs_debug := TRUE;
warnings := -1;
ELSIF (Text.Equal (key, "-t")) THEN
(* ignore the old -tTARGET option which is still in the config files *)
ELSIF (Text.Equal (t, "-g")) THEN
(* generate debugging, which we always do anyway! *)
ELSIF (Text.Equal (t, "-S")) THEN
versionStamps := FALSE; (* don't generate version stamps *)
ELSIF (Text.Equal (t, "-w")) THEN
warnings := 99;
ELSIF (Text.Equal (key, "-w")) THEN
warnings := GetInt (t, 2);
ELSIF (Text.Equal (t, "-builtins")) THEN
emitBuiltins := TRUE; (* emit the predefined scopes *)
ELSIF (Text.Equal (t, "-Z")) THEN
coverage := TRUE; (* generate line profiling *)
ELSIF (Text.Equal (key, "-E")) THEN
errorDie := GetInt (t, 2);
ELSIF (Text.Equal (t, "-NoAsserts")) THEN
doAsserts := FALSE;
ELSIF (Text.Equal (t, "-NoDebug")) THEN
doDebugs := FALSE;
ELSIF (Text.Equal (t, "-NoNarrowChk")) THEN
doNarrowChk := FALSE;
ELSIF (Text.Equal (t, "-NoRangeChk")) THEN
doRangeChk := FALSE;
ELSIF (Text.Equal (t, "-NoReturnChk")) THEN
doReturnChk := FALSE;
ELSIF (Text.Equal (t, "-NoCaseChk")) THEN
doCaseChk := FALSE;
ELSIF (Text.Equal (t, "-NoTypecaseChk")) THEN
doTCaseChk := FALSE;
ELSIF (Text.Equal (t, "-NoNilChk")) THEN
doNilChk := FALSE;
ELSIF (Text.Equal (t, "-NoRaisesChk")) THEN
doRaisesChk := FALSE;
ELSIF (Text.Equal (t, "-NoChecks")) THEN
doAsserts := FALSE;
doNarrowChk := FALSE;
doRangeChk := FALSE;
doReturnChk := FALSE;
doCaseChk := FALSE;
doTCaseChk := FALSE;
doNilChk := FALSE;
doRaisesChk := FALSE;
doDebugs := FALSE;
ELSIF (Text.Equal (t, "-NoIncGC")) THEN
doIncGC := FALSE;
ELSIF (Text.Equal (t, "-NoGenGC")) THEN
doGenGC := FALSE;
ELSIF (Text.Equal (t, "-InitFloats")) THEN
init_floats := TRUE;
ELSIF (Text.Equal (t, "-load_map")) THEN
load_map := TRUE;
ELSIF (Text.Equal (t, "-No_load_map")) THEN
load_map := FALSE;
ELSIF (Text.Equal (t, "-No_stack_walker")) THEN
stack_walker := FALSE;
ELSIF (Text.Equal (t, "-nested_calls")) THEN
nested_calls := TRUE;
ELSIF (Text.Equal (t, "-no_nested_calls")) THEN
nested_calls := FALSE;
ELSIF (Text.Equal (t, "-nested_procs_first")) THEN
(* nested_procs_first := TRUE; *)
(* THIS IS BOGUS: nested_procs_first => the nested procedure
cannot reference local variables of its parent that
weren't declared at the outermost level. *)
ELSIF (Text.Equal (t, "-nested_procs_last")) THEN
nested_procs_first := FALSE;
ELSIF (Text.Equal (t, "-inline_nested_procs")) THEN
inline_nested_procs := TRUE;
ELSIF (Text.Equal (t, "-unfold_nested_procs")) THEN
inline_nested_procs := FALSE;
ELSIF (Text.Equal (t, "-direct_struct_assign")) THEN
direct_struct_assign := TRUE;
ELSIF (Text.Equal (t, "-copying_struct_assign")) THEN
direct_struct_assign := FALSE;
ELSIF (Text.Equal (t, "-clean_stores")) THEN
clean_stores := TRUE;
ELSIF (Text.Equal (t, "-dirty_stores")) THEN
clean_stores := FALSE;
ELSIF (Text.Equal (t, "-clean_jumps")) THEN
clean_jumps := TRUE;
ELSIF (Text.Equal (t, "-check_procs")) THEN
doProcChk := TRUE;
ELSIF (Text.Equal (t, "-dirty_jumps")) THEN
clean_jumps := FALSE;
ELSIF (Text.Equal (t, "-vsdebug")) THEN
vs_debug := TRUE;
ELSIF (Text.Equal (t, "-new_adr")) THEN
new_adr := TRUE;
ELSIF (Text.Equal (t, "-old_adr")) THEN
new_adr := FALSE;
ELSIF (Text.Equal (t, "-stats")) THEN
report_stats := TRUE;
ELSE
env.report_error (NIL, 0, "m3c: unknown option, \"" & t & "\"");
RETURN FALSE;
END;
RETURN TRUE;
END ProcessArg;
PROCEDURE GetInt (t: TEXT; start: INTEGER): INTEGER =
VAR c: CHAR; n: INTEGER := 0;
BEGIN
FOR j := start TO Text.Length (t)-1 DO
c := Text.GetChar (t, j);
IF (c < '0') OR ('9' < c) THEN RETURN n END;
n := n * 10 + ORD (c) - ORD ('0');
END;
RETURN n;
END GetInt;
-------------------------------------------------- misc file operations ---
PROCEDURE OpenUnit (name: M3ID.T; interface, generic: BOOLEAN;
VAR(*OUT*) filename: TEXT): File.T =
VAR file: M3Compiler.SourceFile;
BEGIN
(* ETimer.Push (M3Timers.search); *)
file := env.find_source (name, interface, generic);
filename := file.name;
(* ETimer.Pop (); *)
RETURN file.contents;
END OpenUnit;
PROCEDURE CloseFile (rd: File.T) =
BEGIN
IF (rd # NIL) THEN
TRY rd.close () EXCEPT ELSE END;
END;
END CloseFile;
BEGIN
END Host.