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stream cotrol was broken

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This commit is contained in:
Vitor Santos Costa 2016-10-16 13:11:44 -05:00
parent 1c2880fd1b
commit 5c33960535
2 changed files with 43 additions and 4 deletions
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41
C/flags.c
View File

@ -47,9 +47,13 @@ static Term sys_pid(Term inp);
static bool mkprompt(Term inp);
static Term synerr(Term inp);
static Term indexer(Term inp);
static Term stream(Term inp);
static bool getenc(Term inp);
static bool typein(Term inp);
static bool dqf(Term t2);
static bool set_error_stream( Term inp );
static bool set_input_stream( Term inp );
static bool set_output_stream( Term inp );
static void newFlag(Term fl, Term val);
static Int current_prolog_flag(USES_REGS1);
@ -168,6 +172,41 @@ static Term isaccess(Term inp) {
return TermZERO;
}
static Term stream(Term inp) {
if ( IsVarTerm(inp) )
return inp;
return Yap_CheckStream( inp, Input_Stream_f | Output_Stream_f |
Append_Stream_f | Socket_Stream_f, "yap_flag/3" ) >= 0;
}
static bool
set_error_stream( Term inp ) {
LOCAL_c_error_stream = Yap_CheckStream( inp, Output_Stream_f |
Append_Stream_f | Socket_Stream_f, "yap_flag/3" );
if( IsVarTerm(inp) )
return Yap_unify( inp, Yap_StreamUserName( LOCAL_c_error_stream ) );
return true;
}
static bool
set_input_stream( Term inp ) {
LOCAL_c_input_stream = Yap_CheckStream( inp, Input_Stream_f | Socket_Stream_f, "yap_flag/3" );
if( IsVarTerm(inp) )
return Yap_unify( inp, Yap_StreamUserName( LOCAL_c_input_stream ) );
return true;
}
static bool
set_output_stream( Term inp ) {
LOCAL_c_output_stream = Yap_CheckStream( inp, Output_Stream_f |
Append_Stream_f | Socket_Stream_f, "yap_flag/3" );
if( IsVarTerm(inp) )
return Yap_unify( inp, Yap_StreamUserName( LOCAL_c_output_stream ) );
return true;
}
static Term isground(Term inp) {
return Yap_IsGroundTerm(inp) ? inp : TermZERO;
}
@ -1473,7 +1512,7 @@ static void newFlag(Term fl, Term val) {
GLOBAL_flagCount++;
f.name = (char *)RepAtom(AtomOfTerm(fl))->StrOfAE;
f.writable = true;
f.helper = 0;
f.helper = NULL;
f.def = ok;
initFlag(&f, i, true);
if (IsAtomOrIntTerm(val)) {

6
H/YapLFlagInfo.h
View File

@ -83,7 +83,7 @@ which must be an atom. If unbound, unify the argument with the current
working module.
*/
YAP_FLAG( USER_ERROR_FLAG, "user_error", true, isatom, "user_error" , NULL ), /**< `user_error1`
YAP_FLAG( USER_ERROR_FLAG, "user_error", true, stream, "user_error" , set_error_stream ), /**< `user_error1`
If the second argument is bound to a stream, set user_error to
this stream. If the second argument is unbound, unify the argument with
@ -114,5 +114,5 @@ prompts from the system were redirected to the stream
automatically redirects the user_error alias to the original
`stderr`.
*/
YAP_FLAG( USER_INPUT_FLAG, "user_input", true, isatom, "user_input" , NULL ),
YAP_FLAG( USER_OUTPUT_FLAG, "user_output", true, isatom, "user_output" , NULL ),
YAP_FLAG( USER_INPUT_FLAG, "user_input", true, stream, "user_input" , set_input_stream ),
YAP_FLAG( USER_OUTPUT_FLAG, "user_output", true, stream, "user_output" , set_output_stream ),