error propagation

C/c_interface.c

@@ -2334,7 +2334,7 @@ X_API void *YAP_RepStreamFromId(int sno) { return GLOBAL_Stream + sno; }
 X_API void YAP_CloseAllOpenStreams(void) {
   BACKUP_H();
 
-  Yap_CloseStreams(FALSE);
+  Yap_CloseStreams();
 
   RECOVER_H();
 }

C/exec.c

@@ -1427,15 +1427,18 @@ static Int execute_depth_limit(USES_REGS1) {
 static bool exec_absmi(bool top, yap_reset_t reset_mode USES_REGS) {
   int lval = 0, out;
   Int OldBorder = LOCAL_CBorder;
+  //   yap_error_descriptor_t *err_info= LOCAL_ActiveError;
   LOCAL_CBorder = LCL0 - ENV;
 
   sigjmp_buf signew, *sighold = LOCAL_RestartEnv;
   LOCAL_RestartEnv = &signew;
-
+  int i = AllocLevel();
   if /* top &&*/( (lval = sigsetjmp(signew, 1)) != 0) {
     switch (lval) {
     case 1: { /* restart */
               /* otherwise, SetDBForThrow will fail entering critical mode */
+      // LOCAL_ActiveError = err_info;
+      pop_text_stack(0);
       LOCAL_PrologMode = UserMode;
       /* find out where to cut to */
       /* siglongjmp resets the TR hardware register */
@@ -1454,12 +1457,14 @@ static bool exec_absmi(bool top, yap_reset_t reset_mode USES_REGS) {
     }
       break;
     case 2: {
+      // LOCAL_ActiveError = err_info;
       /* arithmetic exception */
       /* must be done here, otherwise siglongjmp will clobber all the
        * registers
        */
       /* reset the registers so that we don't have trash in abstract
        * machine */
+      pop_text_stack(i);
       Yap_set_fpu_exceptions(
 			     getAtomicGlobalPrologFlag(ARITHMETIC_EXCEPTIONS_FLAG));
       P = (yamop *) FAILCODE;
@@ -1467,6 +1472,8 @@ static bool exec_absmi(bool top, yap_reset_t reset_mode USES_REGS) {
     }
       break;
     case 3: { /* saved state */
+      // LOCAL_ActiveError = err_info;
+      pop_text_stack(i);
       LOCAL_CBorder = OldBorder;
       LOCAL_RestartEnv = sighold;
       LOCAL_PrologMode = UserMode;
@@ -1476,6 +1483,7 @@ static bool exec_absmi(bool top, yap_reset_t reset_mode USES_REGS) {
       /* abort */
       /* can be called from anywhere, must reset registers,
        */
+      // LOCAL_ActiveError = err_info;
       while (B) {
 	LOCAL_ActiveError->errorNo = ABORT_EVENT;
 	Yap_JumpToEnv();
@@ -1483,6 +1491,7 @@ static bool exec_absmi(bool top, yap_reset_t reset_mode USES_REGS) {
       LOCAL_PrologMode = UserMode;
       P = (yamop *) FAILCODE;
       LOCAL_RestartEnv = sighold;
+      pop_text_stack(i);
       return false;
       break;
     case 5:
@@ -1490,12 +1499,15 @@ static bool exec_absmi(bool top, yap_reset_t reset_mode USES_REGS) {
       // but we should inform the caller on what happened.
 
       //           Yap_regp = old_rs;
+      // LOCAL_ActiveError = err_info;
       restore_TR();
       restore_B();
       /* H is not so important, because we're gonna backtrack */
       restore_H();
       /* set stack */
       Yap_JumpToEnv();
+      Yap_CloseTemporaryStreams();
+      pop_text_stack(i);
       ASP = (CELL *) PROTECT_FROZEN_B(B);
 
       if (B == NULL || B->cp_b == NULL || (CELL*)(B->cp_b) > LCL0 - LOCAL_CBorder) {

C/init.c

@@ -1478,7 +1478,7 @@ void Yap_exit(int value) {
     run_halt_hooks(value);
     Yap_ShutdownLoadForeign();
   }
-  Yap_CloseStreams(false);
+  Yap_CloseStreams();
   Yap_CloseReadline();
 #if USE_SYSTEM_MALLOC
 #endif

C/save.c

@@ -559,7 +559,7 @@ static Int do_save(int mode USES_REGS) {
     Yap_Error(TYPE_ERROR_LIST, t1, "save/1");
     return FALSE;
   }
-  Yap_CloseStreams(TRUE);
+  Yap_CloseStreams();
   if ((splfild = open_file(LOCAL_FileNameBuf, O_WRONLY | O_CREAT)) < 0) {
     Yap_Error(SYSTEM_ERROR_INTERNAL,
               MkAtomTerm(Yap_LookupAtom(LOCAL_FileNameBuf)),
@@ -1322,7 +1322,7 @@ static int commit_to_saved_state(const char *s, CELL *Astate, CELL *ATrail,
       strcpy(tmp, Yap_AbsoluteFile(s, true));
       fprintf(stderr, "%% Restoring file %s\n", tmp);
     }
-    Yap_CloseStreams(TRUE);
+    Yap_CloseStreams();
   }
 #ifdef DEBUG_RESTORE4
   /*

C/scanner.c

@@ -667,7 +667,7 @@ static Term float_send(char *s, int sign) {
 #endif
   {
     CACHE_REGS
-    return (MkEvalFl(f));
+    return MkFloatTerm(f);
   }
 }
 
@@ -969,7 +969,8 @@ static Term get_num(int *chp, int *chbuffp, StreamDesc *st, int sign) {
     *sp++ = ch;
     ch = getchr(st);
     if (!my_isxdigit(ch, 'F', 'f'))  {
-      Yap_InitError(SYNTAX_ERROR, TermNil, "empty hexadecimal number 0x%C",ch)   ;
+      Yap_syntax_error(NULL, st-GLOBAL_Stream);
+      Yap_ThrowError(SYNTAX_ERROR, TermNil, "empty hexadecimal number 0x%C",ch)   ;
       return 0;
     }
     while (my_isxdigit(ch, 'F', 'f')) {
@@ -992,7 +993,8 @@ static Term get_num(int *chp, int *chbuffp, StreamDesc *st, int sign) {
     base = 8;
     ch = getchr(st);
       if (ch < '0' || ch > '7') {
-          Yap_InitError(SYNTAX_ERROR, TermNil, "empty octal number 0b%C", ch)   ;
+      Yap_syntax_error(NULL, st-GLOBAL_Stream);
+      Yap_ThrowError(SYNTAX_ERROR, TermNil, "empty octal number 0b%C", ch)   ;
         return 0;
       }
   } else if (ch == 'b' && base == 0) {
@@ -1000,7 +1002,8 @@ static Term get_num(int *chp, int *chbuffp, StreamDesc *st, int sign) {
     base = 2;
     ch = getchr(st);
     if (ch < '0' || ch > '1') {
-                                          Yap_InitError(SYNTAX_ERROR, TermNil, "empty binary  0b%C", ch)   ;
+      Yap_syntax_error(NULL, st-GLOBAL_Stream);
+      Yap_ThrowError(SYNTAX_ERROR, TermNil, "empty binary  0b%C", ch)   ;
       return 0;
     }
 
@@ -1032,7 +1035,6 @@ static Term get_num(int *chp, int *chbuffp, StreamDesc *st, int sign) {
     if (has_dot) {
       unsigned char *dp;
       int dc;
-
       if (chtype(ch = getchr(st)) != NU) {
         if (ch == 'e' || ch == 'E') {
           if (trueGlobalPrologFlag(ISO_FLAG))
@@ -1173,11 +1175,6 @@ Term Yap_scan_num(StreamDesc *inp, bool error_on) {
   while (isspace(ch = getchr(inp)))
     ;
 #endif
-  if (LOCAL_ErrorMessage != NULL || ch != -1 || cherr) {
-    Yap_clean_tokenizer(old_tr, NULL, NULL);
-   Yap_InitError(SYNTAX_ERROR, ARG2, "while converting stream %d to number", inp-GLOBAL_Stream );
-    return 0;
-  }
   return out;
 }
 

C/text.c

@@ -757,16 +757,22 @@ static Term write_number(unsigned char *s, seq_tv_t *out,
   Term t;
   yap_error_descriptor_t new_error;
   bool mdnew = true;
+  if (!error_on) {
+      sigjmp_buf signew, *sighold = LOCAL_RestartEnv;
+      
+      LOCAL_RestartEnv = &signew;
       Yap_pushErrorContext(error_on, &new_error);
+      if /* top &&*/( sigsetjmp(signew, 1) == 0) {
 	t = Yap_StringToNumberTerm((char *)s, &out->enc,error_on);
-    Yap_popErrorContext(mdnew, true);
+      } else {
-  if (error_on) {
-    if (t == 0 && LOCAL_ActiveError->errorNo != YAP_NO_ERROR) {
-      P = FAILCODE;
-      Yap_HandleError("scanningx");
-    }
-  }
 	Yap_ResetException(LOCAL_ActiveError);
+	t = 0;
+      }
+      Yap_popErrorContext(mdnew, true);
+      LOCAL_RestartEnv = sighold;
+  } else {
+    t = Yap_StringToNumberTerm((char *)s, &out->enc,error_on);
+  }
   return t;
 }
 

C/write.c

@@ -349,7 +349,7 @@ static void wrputf(Float f, struct write_globs *wglb) /* writes a float	 */
         found_dot = TRUE;
         wrputs(".0", stream);
       }
-      found_dot = TRUE;
+      found_dot = true;
     }
     wrputc(ch, stream);
     pt++;
@@ -1264,6 +1264,7 @@ char *Yap_TermToBuffer(Term t, encoding_t enc, int flags) {
     GLOBAL_Stream[sno].encoding = enc;
   else
     GLOBAL_Stream[sno].encoding = LOCAL_encoding;
+  GLOBAL_Stream[sno].status |= CloseOnException_Stream_f;
   Yap_plwrite(t, GLOBAL_Stream + sno, 0, flags, GLOBAL_MaxPriority);
 
   sf = Yap_MemExportStreamPtr(sno);

H/YapEval.h

@@ -357,11 +357,11 @@ Functor EvalArg(Term);
 #define FlIsInt(X) (FALSE)
 #endif
 
-#ifdef M_WILLIAMS
+//#if defined(M_WILLIAMS)
 #define MkEvalFl(X) MkFloatTerm(X)
-#else
+//#else
-#define MkEvalFl(X) (FlIsInt(X) ? MkIntTerm((Int)(X)) : MkFloatTerm(X))
+//#define MkEvalFl(X) (FlIsInt(X) ? MkIntTerm((Int)(X)) : MkFloatTerm(X))
-#endif
+//#endif
 
 /* Macros used by some of the eval functions */
 #define REvalInt(I)                                                            \

H/YapGFlagInfo.h

@@ -216,7 +216,7 @@
      printed, `%g` will print all floats using 6 digits instead of the
      default 15.
   */
-  YAP_FLAG(FLOAT_FORMAT_FLAG, "float_format", true, isatom, "%.16g",
+  YAP_FLAG(FLOAT_FORMAT_FLAG, "float_format", true, isatom, "%.16f",
 	   NULL),
   /**< `gc`
 

docs/Doxyfile.in

@@ -1958,7 +1958,7 @@ MAN_LINKS              = NO
 # captures the structure of the code including all documentation.
 # The default value is: NO.
 
-GENERATE_XML           = NO
+GENERATE_XML           = YES
 
 # The XML_OUTPUT tag is used to specify where the XML pages will be put. If a
 # relative path is entered the value of OUTPUT_DIRECTORY will be put in front of
@@ -1966,7 +1966,7 @@ GENERATE_XML           = NO
 # The default directory is: xml.
 # This tag requires that the tag GENERATE_XML is set to YES.
 
-XML_OUTPUT             = YES
+XML_OUTPUT             = xml
 
 # If the XML_PROGRAMLISTING tag is set to YES, doxygen will dump the program
 # listings (including syntax highlighting and cross-referencing information) to

include/YapDefs.h

@@ -391,7 +391,9 @@ typedef enum stream_f {
       0x1000000, /**< do not close the stream after an abort event */
   Readline_Stream_f = 0x2000000, /**< the stream is a readline stream */
   FreeOnClose_Stream_f =
-      0x4000000 /**< the stream buffer should be releaed on close */
+  0x4000000, /**< the stream buffer should be releaed on close */
+  CloseOnException_Stream_f =
+      0x8000000 /**< the stream closed by Yap_Error and friends */
 } estream_f;
 
 typedef uint64_t stream_flags_t;

os/chartypes.c

@@ -95,6 +95,7 @@ Term Yap_StringToNumberTerm(const char *s, encoding_t *encp, bool error_on) {
   while (*s && isblank(*s) && Yap_wide_chtype(*s) == BS)
     s++;
 #endif
+  GLOBAL_Stream[sno].status |= CloseOnException_Stream_f;
   t = Yap_scan_num(GLOBAL_Stream + sno, error_on);
     Yap_CloseStream(sno);
   UNLOCK(GLOBAL_Stream[sno].streamlock);

os/readterm.c

@@ -1384,6 +1384,7 @@ Term Yap_BufferToTerm(const  char *s, Term opts) {
     sno = Yap_open_buf_read_stream((char *)s, strlen((const char *)s), &l,
                                    MEM_BUF_USER);
 
+    GLOBAL_Stream[sno].status |= CloseOnException_Stream_f;
     rval = Yap_read_term(sno, opts, false);
     Yap_CloseStream(sno);
     return rval;
@@ -1395,7 +1396,7 @@ Term Yap_UBufferToTerm(const  unsigned char *s, Term opts) {
     encoding_t l = ENC_ISO_UTF8;
     sno = Yap_open_buf_read_stream((char *)s, strlen((const char *)s), &l,
                                    MEM_BUF_USER);
-
+    GLOBAL_Stream[sno].status |= CloseOnException_Stream_f;
     rval = Yap_read_term(sno, opts, false);
     Yap_CloseStream(sno);
     return rval;
@@ -1515,6 +1516,7 @@ static Int read_term_from_string(USES_REGS1) {
   char *ss = (char *)s;
   encoding_t enc = ENC_ISO_UTF8;
   int sno = Yap_open_buf_read_stream(ss, len, &enc, MEM_BUF_USER);
+  GLOBAL_Stream[sno].status |= CloseOnException_Stream_f;
   rc = Yap_read_term(sno, Deref(ARG3), 3);
   Yap_CloseStream(sno);
   if (!rc)

os/streams.c

@@ -964,11 +964,11 @@ static Int set_stream(USES_REGS1) { /* Init current_stream */
   return do_set_stream(sno, Deref(ARG2) PASS_REGS);
 }
 
-/*
+/**
  * Called when you want to close all open streams, except for stdin, stdout
  * and stderr
  */
-void Yap_CloseStreams(int loud) {
+void Yap_CloseStreams(void) {
   CACHE_REGS
   int sno;
   fflush(NULL);
@@ -979,6 +979,23 @@ void Yap_CloseStreams(int loud) {
   }
 }
 
+/**
+ * Called when you want to close all temporary streams,
+ * except for stdin, stdout
+ * and stderr
+ */
+void Yap_CloseTemporaryStreams(void) {
+  CACHE_REGS
+  int sno;
+  fflush(NULL);
+  for (sno = 3; sno < MaxStreams; ++sno) {
+    if (GLOBAL_Stream[sno].status & Free_Stream_f)
+      continue;
+    if (GLOBAL_Stream[sno].status & CloseOnException_Stream_f)
+      CloseStream(sno);
+  }
+}
+
 static void CloseStream(int sno) {
   CACHE_REGS
 

os/yapio.h

@@ -78,7 +78,8 @@ extern void Yap_UnLockStream(void *);
 #define Yap_UnLockStream(X)
 #endif
 extern Int Yap_GetStreamFd(int);
-extern void Yap_CloseStreams(int);
+extern void Yap_CloseStreams(void);
+extern void Yap_CloseTemporaryStreams(void);
 extern void Yap_FlushStreams(void);
 extern void Yap_ReleaseStream(int);
 extern int Yap_PlGetchar(void);