add user_flags/s prolog_flag
This commit is contained in:
Vitor Santos Costa
parent
495529e69e
commit
ec30e08f69
@ -7941,6 +7941,11 @@ prompts from the system were redirected to the stream
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automatically redirects the @code{user_error} alias to the original
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@code{stderr}.
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@item user_flags
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@findex user_flags (yap_flag/2 option)
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@*
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Define the behaviour of @code{set_prolog_flag/2} if the flag is not known. Values are @code{silent}, @code{warning} and @code{error}. The first two create the flag on-the-fly, with @code{warning} printing a message. The value @code{error} is consistent with ISO: it raises an existence error and does not create the flag. See also @code{create_prolog_flag/3}. The default is@code{error}, and developers are encouraged to use @code{create_prolog_flag/3} to create flags for their library.
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@item user_input
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@findex user_input (yap_flag/2 option)
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@*
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@ -13,6 +13,8 @@
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:- load_foreign_files([plstream], [], initIO).
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:- set_prolog_flag(user_flags,silent).
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:- ensure_loaded(library(atts)).
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:- use_module(library(charsio),[write_to_chars/2,read_from_chars/2]).
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@ -773,6 +773,23 @@ yap_flag(prompt_alternatives_on,groundness) :- !,
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yap_flag(prompt_alternatives_on,X) :-
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'$do_error'(domain_error(flag_value,prompt_alternatives_on+X),yap_flag(prompt_alternatives_on,X)).
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'$user_flags'(error).
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yap_flag(user_flags,OUT) :-
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var(OUT), !,
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'$user_flags'(OUT).
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yap_flag(user_flags,silent) :- !,
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'$purge_clauses'('$user_flags'(_),prolog),
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'$compile'('$user_flags'(silent),0,'$user_flags'(silent),prolog).
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yap_flag(user_flags,warning) :- !,
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'$purge_clauses'('$user_flags'(_),prolog),
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'$compile'('$user_flags'(warning),0,'$user_flags'(warning),prolog).
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yap_flag(user_flags,error) :- !,
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'$purge_clauses'('$user_flags'(_),prolog),
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'$compile'('$user_flags'(error),0,'$user_flags'(error),prolog).
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yap_flag(user_flags,X) :-
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'$do_error'(domain_error(flag_value,user_flags+X),yap_flag(user_flags,X)).
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yap_flag(stack_dump_on_error,OUT) :-
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var(OUT), !,
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'$access_yap_flags'(17,X),
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@ -899,78 +916,79 @@ yap_flag(address_bits,X) :-
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yap_flag(dialect,yap).
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'$show_yap_flag_opts'(V,Out) :-
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(
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V = address_bits ;
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V = answer_format ;
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V = argv ;
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V = bounded ;
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V = char_conversion ;
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V = character_escapes ;
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V = chr_toplevel_show_store ;
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V = debug ;
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V = debugger_print_options ;
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V = dialect ;
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V = discontiguous_warnings ;
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V = dollar_as_lower_case ;
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V = double_quotes ;
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V = encoding ;
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V = executable ;
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'$yap_system_flag'(address_bits).
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'$yap_system_flag'(answer_format).
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'$yap_system_flag'(argv).
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'$yap_system_flag'(bounded).
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'$yap_system_flag'(char_conversion).
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'$yap_system_flag'(character_escapes).
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'$yap_system_flag'(chr_toplevel_show_store).
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'$yap_system_flag'(debug).
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'$yap_system_flag'(debugger_print_options).
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'$yap_system_flag'(dialect).
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'$yap_system_flag'(discontiguous_warnings).
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'$yap_system_flag'(dollar_as_lower_case).
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'$yap_system_flag'(double_quotes).
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'$yap_system_flag'(encoding).
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'$yap_system_flag'(executable).
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% V = fast ;
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V = fileerrors ;
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V = float_format ;
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'$yap_system_flag'(fileerrors ).
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'$yap_system_flag'(float_format).
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% V = float_mantissa_digits ;
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% V = float_epsilon ;
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% V = float_min_exponent ;
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% V = float_max_exponent ;
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V = gc ;
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V = gc_margin ;
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V = gc_trace ;
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V = generate_debug_info ;
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'$yap_system_flag'(gc ).
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'$yap_system_flag'(gc_margin ).
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'$yap_system_flag'(gc_trace ).
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'$yap_system_flag'(generate_debug_info ).
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% V = hide ;
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V = home ;
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V = host_type ;
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V = index ;
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V = tabling_mode ;
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V = informational_messages ;
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V = integer_rounding_function ;
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V = language ;
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V = max_arity ;
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V = max_integer ;
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V = max_tagged_integer ;
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V = max_workers ;
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V = max_threads ;
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V = min_integer ;
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V = min_tagged_integer ;
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V = n_of_integer_keys_in_db ;
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V = open_expands_filename ;
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V = profiling ;
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V = prompt_alternatives_on ;
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V = redefine_warnings ;
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V = shared_object_search_path ;
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V = single_var_warnings ;
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V = stack_dump_on_error ;
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V = strict_iso ;
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V = syntax_errors ;
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V = system_options ;
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V = to_chars_mode ;
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V = toplevel_hook ;
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V = toplevel_print_options ;
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V = typein_module ;
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V = unix ;
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V = unknown ;
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V = update_semantics ;
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V = user_error ;
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V = user_input ;
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V = user_output ;
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V = variable_names_may_end_with_quotes ;
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V = verbose ;
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V = verbose_auto_load ;
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V = version ;
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V = version_data ;
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V = windows ;
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V = write_strings
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),
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'$yap_system_flag'(home ).
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'$yap_system_flag'(host_type ).
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'$yap_system_flag'(index).
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'$yap_system_flag'(tabling_mode).
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'$yap_system_flag'(informational_messages).
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'$yap_system_flag'(integer_rounding_function).
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'$yap_system_flag'(language).
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'$yap_system_flag'(max_arity).
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'$yap_system_flag'(max_integer).
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'$yap_system_flag'(max_tagged_integer).
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'$yap_system_flag'(max_workers).
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'$yap_system_flag'(max_threads).
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'$yap_system_flag'(min_integer).
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'$yap_system_flag'(min_tagged_integer).
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'$yap_system_flag'(n_of_integer_keys_in_db).
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'$yap_system_flag'(open_expands_filename).
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'$yap_system_flag'(profiling).
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'$yap_system_flag'(prompt_alternatives_on).
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'$yap_system_flag'(redefine_warnings).
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'$yap_system_flag'(shared_object_search_path).
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'$yap_system_flag'(single_var_warnings).
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'$yap_system_flag'(stack_dump_on_error).
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'$yap_system_flag'(strict_iso).
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'$yap_system_flag'(syntax_errors).
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'$yap_system_flag'(system_options).
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'$yap_system_flag'(to_chars_mode).
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'$yap_system_flag'(toplevel_hook).
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'$yap_system_flag'(toplevel_print_options).
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'$yap_system_flag'(typein_module).
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'$yap_system_flag'(unix).
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'$yap_system_flag'(unknown).
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'$yap_system_flag'(update_semantics).
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'$yap_system_flag'(user_error).
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'$yap_system_flag'(user_flags).
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'$yap_system_flag'(user_input).
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'$yap_system_flag'(user_output).
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'$yap_system_flag'(variable_names_may_end_with_quotes).
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'$yap_system_flag'(verbose).
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'$yap_system_flag'(verbose_auto_load).
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'$yap_system_flag'(version).
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'$yap_system_flag'(version_data).
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'$yap_system_flag'(windows).
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'$yap_system_flag'(write_strings).
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'$show_yap_flag_opts'(V,Out) :-
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'$yap_system_flag'(V),
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yap_flag(V, Out).
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'$trans_to_lang_flag'(0,cprolog).
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@ -1080,8 +1098,25 @@ set_prolog_flag(F, Val) :-
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set_prolog_flag(F,V) :-
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\+ atom(F), !,
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'$do_error'(type_error(atom,F),set_prolog_flag(F,V)).
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set_prolog_flag(F, Val) :-
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prolog:'$user_defined_flag'(F,_,_,_), !,
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yap_flag(F, Val).
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set_prolog_flag(F,V) :-
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'$yap_system_flag'(F), !,
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yap_flag(F,V).
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set_prolog_flag(F,V) :-
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'$user_flags'(UFlag),
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(
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UFlag = silent ->
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create_prolog_flag(F, V, [])
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;
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UFlag = warning ->
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print_message(warning,existence_error(prolog_flag, F)),
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create_prolog_flag(F, V, [])
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;
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UFlag = error ->
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'$do_error'(existence_error(prolog_flag, F),set_prolog_flag(F,V))
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).
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prolog_flag(F, Old, New) :-
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var(F), !,
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@ -127,6 +127,8 @@ system_message(no_match(P)) -->
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[ 'No matching predicate for ~w.' - [P] ].
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system_message(leash([A|B])) -->
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[ 'Leashing set to ~w.' - [[A|B]] ].
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system_message(existence_error(prolog_flag,F)) -->
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[ 'Prolog Flag ~w: new Prolog flags must be created using create_prolog_flag/3.' - [F] ].
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system_message(singletons([SV],P,CLN)) -->
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[ 'Singleton variable ~s in ~q, clause ~d.' - [SV,P,CLN] ].
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system_message(singletons(SVs,P,CLN)) -->
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@ -154,6 +156,8 @@ system_message(error(context_error(Goal,Who),Where)) -->
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system_message(error(domain_error(DomainType,Opt), Where)) -->
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[ 'DOMAIN ERROR- ~w: ' - Where],
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domain_error(DomainType, Opt).
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system_message(error(existence_error(prolog_flag,P), Where)) --> !,
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[ 'EXISTENCE ERROR- ~w: prolog flag ~w is undefined' - [Where,P] ].
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system_message(error(existence_error(procedure,P), context(Call,Parent))) --> !,
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[ 'EXISTENCE ERROR- procedure ~w is undefined, called from context ~w~n Goal was ~w' - [P,Parent,Call] ].
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system_message(error(existence_error(stream,Stream), Where)) -->
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