Merge branch 'master' of ssh://ssh.dcc.fc.up.pt:31064/home/vsc/yap

C/c_interface.c

@@ -2202,7 +2202,15 @@ X_API Term YAP_ReadFromStream(int sno) {
   Term o;
 
   BACKUP_MACHINE_REGS();
+  
+  sigjmp_buf signew;
+  if (sigsetjmp(signew, 0)) {
+    Yap_syntax_error(LOCAL_toktide, sno, "ReadFromStream");
+  RECOVER_MACHINE_REGS();
+  return 0;
+  } else { 
   o = Yap_read_term(sno, TermNil, false);
+  }
   RECOVER_MACHINE_REGS();
   return o;
 }

C/errors.c

@@ -363,6 +363,7 @@ bool Yap_PrintWarning(Term twarning) {
   LOCAL_within_print_message = false;
   LOCAL_PrologMode &= ~InErrorMode;
   return rc;
+   
 }
 
 bool Yap_HandleError__(const char *file, const char *function, int lineno,
@@ -415,7 +416,7 @@ bool Yap_HandleError__(const char *file, const char *function, int lineno,
       return false;
     }
   default:
-
+  
     if (LOCAL_PrologMode == UserMode)
       Yap_ThrowError__(file, function, lineno, err, LOCAL_RawTerm, serr);
     else

C/exec.c

@@ -1734,6 +1734,11 @@ bool Yap_execute_pred(PredEntry *ppe, CELL *pt, bool pass_ex USES_REGS) {
     // should we catch the exception or pass it through?
     // We'll pass it through
     if (pass_ex && Yap_HasException()) {
+        if ((LOCAL_PrologMode & BootMode) || !CurrentModule ) {
+	  Yap_ResetException(LOCAL_ActiveError);
+      return false;
+    }
+
       Yap_RaiseException();
       return false;
     }
@@ -1756,6 +1761,10 @@ bool Yap_execute_pred(PredEntry *ppe, CELL *pt, bool pass_ex USES_REGS) {
     // should we catch the exception or pass it through?
     // We'll pass it through
     if (pass_ex) {
+        if ((LOCAL_PrologMode & BootMode) || !CurrentModule ) {
+	  Yap_ResetException(LOCAL_ActiveError);
+      return false;
+    }
       Yap_RaiseException();
     }
     return false;

C/yap-args.c

@@ -166,6 +166,7 @@ static bool load_file(const char *b_file USES_REGS) {
 
   /* consult in C */
   int lvl = push_text_stack();
+  
   char *full;
   /* the consult mode does not matter here, really */
   if ((osno = Yap_CheckAlias(AtomLoopStream)) < 0) {
@@ -191,6 +192,7 @@ static bool load_file(const char *b_file USES_REGS) {
           YAP_Reset(YAP_FULL_RESET, false);
      Yap_StartSlots();
     Term vs = MkVarTerm(), pos = MkVarTerm();
+
     t = YAP_ReadClauseFromStream(c_stream, vs, pos);
     // Yap_GetNèwSlot(t);
     if (t == TermEof || t == TermNil) {

H/YapLFlagInfo.h

@@ -117,9 +117,9 @@ Just fail
 	/**<
 
        If `true` allow printing of informational messages when
-       searching for file names. If `false` disable printing these messages. It
-       is `false` by default except if YAP is booted with the `-L`
-       flag.
+       searching for file names. If `false` disable printing these
+       messages. It is `false` by default except if YAP is booted with
+       the `-L` flag.
     */
 	YAP_FLAG(VERBOSE_FILE_SEARCH_FLAG, "verbose_file_search", true, booleanFlag,
 			 "false", NULL),

pl/absf.yap

@@ -30,14 +30,13 @@
         add_to_path/1,
         add_to_path/2,
         path/1,
-        remove_from_path/1]).
+        remove_from_path/1], []).
 
 
 absolute_file_name__(File,LOpts,TrueFileName) :-
 				%   must_be_of_type( atom, File ),
      % look for solutions
      gated_call(
-
         '$enter_absf'( File, LOpts, Opts, HasSol, OldF, PreviousFileErrors, PreviousVerbose, Expand, Verbose, TakeFirst, FileErrors ),
          '$find_in_path'(File, Opts,TrueFileName, HasSol, TakeFirst),
          Port,
@@ -91,12 +90,12 @@ absolute_file_name__(File,LOpts,TrueFileName) :-
     '$absf_port'(fail,  File, TrueFileName, HasSol, OldF, PreviousFileErrors, PreviousVerbose, Expand, Verbose, TakeFirst, FileErrors ).
 
 
-
-core_file_name(Name, Opts) -->
+:- start_low_level_trace.
+prolog:core_file_name(Name, Opts) -->
     '$file_name'(Name, Opts, E),
     '$suffix'(E, Opts),
     '$glob'(Opts).
-
+:- stop_low_level_trace.
 				%
 % handle library(lists) or foreign(jpl)
 %
@@ -416,7 +415,7 @@ remove_from_path(New) :- '$check_path'(New,Path),
     get_abs_file_parameter( access, Opts, Access ),
     get_abs_file_parameter( expand, Opts, Expand ),
     absf_trace('start with ~w', [Name]),
-    core_file_name(Name, Opts, CorePath, []),
+    prolog:core_file_name(Name, Opts, CorePath, []),
     absf_trace('  after name/library unfolding: ~w', [Name]),
     '$variable_expansion'(CorePath, Opts,ExpandedPath),
     absf_trace('   after environment variable expansion: ~s', [ExpandedPath]),

pl/boot.yap

@@ -37,23 +37,16 @@
 */
 system_module(Mod, SysExps) :-
     system_module(Mod, SysExps, []).
- 
-
-use_system_module(_Module, _SysExps).
 
 system_module(_Mod, _SysExps, _Decls) :-
       % '$new_system_predicates'(SysExps),
        fail.
- system_module(_Mod, _SysExps, _Decls) :-
-    (
-    stream_property(loop_stream,file_name(File))
-    ->
-    recordz(system_file, File, _ )
-    ;
-    recordz(system_file, loop_stream, _ )
-    ).
- 
-private(_).
+system_module(_Mod, _SysExps, _Decls) :-
+    stream_property(loop_stream,[file_name(File)]),
+    !,
+    recordz(system_file, File, _ ).
+system_module(_Mod, _SysExps, _Decls) :-
+    recordz(system_file, loop_stream, _ ).
 
 '$new_system_predicates'([]).
 '$new_system_predicates'([N/Ar|_Ps])  :-
@@ -61,6 +54,10 @@ private(_).
 '$new_system_predicates'([_P|Ps]) :-
     '$new_system_predicates'(Ps).
 
+use_system_module(_Module, _SysExps).
+
+private(_).
+
 %
 % boootstrap predicates.
 %
@@ -82,22 +79,38 @@ private(_).
 
 % be careful here not to generate an undefined exception..
 
-print_message(L,E) :-
-	(L = informational
-	->
-	'$query_exception'(prologPredFile, Desc, File),
-	'$query_exception'(prologPredLine, Desc, FilePos),
-	format(user_error,'~a:~d:  error:', [File,FilePos])
-	;
-	
-	%throw(error(error, print_message(['while calling goal = ~w'-E,nl]))).
+print_message(informational,_) :-
+	yap_flag(verbose, silent),
+	!.
+print_message(informational,E) :-
+	format('informational message ~q.~n',[E]),
+	!.
+%%
+% boot:print_message( Type, Error )
+%
+print_message(Type,error(_,exception(Desc))) :-
 	'$get_exception'(Desc),
+	print_boot_message(Type,Error,Desc),
+	'$print_exception'(Desc),
+	!.
+print_message(Type,Error) :-
+	format( user_error, '~w while bootstraping: event is ~q~n',[Type,Error]).
+
+
+
+print_boot_message(Type,Error,Desc) :-		
+	'$query_exception'(parserFile, Desc, File),
+	'$query_exception'(parserLine, Desc, FilePos),
+	!,
+	format(user_error,'~a:~d:  ~a: ~q~n', [File,FilePos,Type,Error]).
+print_boot_message(Type,Error,Desc) :-		
 	'$query_exception'(prologPredFile, Desc, File),
 	'$query_exception'(prologPredLine, Desc, FilePos),
-	format(user_error,'~a:~d:  error:', [File,FilePos]),
-	'$print_exception'(Desc),
-	format( user_error, '~w from bootstrap: got ~w~n',[L,E])
-	).
+	format(user_error,'~a:~d:  ~a: ~q~n', [File,FilePos,Type,Error]).
+print_boot_message(Type,Error,Desc) :-
+	'$query_exception'(errorFile, Desc, File),
+	'$query_exception'(errorLine, Desc, FilePos),
+	format(user_error,'~a:~d:  ~a: ~q~n', [File,FilePos,Type,Error]).
 
 '$undefp0'([M|G], _Action) :-
 	functor(G,N,A),
@@ -141,7 +154,7 @@ print_message(L,E) :-
         goal_expansion/3,
         otherwise/0,
         term_expansion/2,
-        version/2,
+        version/2],
 	[
 	'$do_log_upd_clause'/6,
         '$do_log_upd_clause0'/6,
@@ -249,7 +262,7 @@ initialize_prolog :-
 :- c_compile( 'preds.yap' ).
 :- c_compile( 'modules.yap' ).
 :- c_compile( 'grammar.yap' ).
-%:- c_compile( 'protect.yap' ).
+:- c_compile( 'protect.yap' ).
 
 :- ['absf.yap'].
 

pl/top.yap

@@ -243,6 +243,7 @@ live :-
     functor(NH,N,Ar),
     print_message(warning,redefine_imported(Mod,NM,Mod:N/Ar)),
     erase(RI),
+    clause(Mod:H,_,R), erase(R),
     fail.
 '$init_pred'(H, Mod, Where ) :-
     '$init_as_dynamic'(Where),