X-Git-Url: https://www.ginac.de/ginac.git//ginac.git?p=ginac.git;a=blobdiff_plain;f=cint%2Fginaccint.bin.cpp;h=23cb38bd3b502802ad0d1aa69e6dccae2970ff91;hp=52f3ef4881dbd4ed7110fc5c9e1080ea12f56287;hb=d44ad7a1e65cfb2a8ca56382609cc22b2e6e07c4;hpb=97af29c12bb3074cfb4e674d71000f0712c51ba2;ds=sidebyside

diff --git a/cint/ginaccint.bin.cpp b/cint/ginaccint.bin.cpp
index 52f3ef48..23cb38bd 100644
--- a/cint/ginaccint.bin.cpp
+++ b/cint/ginaccint.bin.cpp
@@ -24,6 +24,8 @@ string ToString(const T & t)
 }
 
 basic * ex::last_created_or_assigned_bp=0;
+basic * ex::dummy_bp=0;
+long ex::last_created_or_assigned_exp=0;
 
 #endif // def OBSCURE_CINT_HACK
 
@@ -54,14 +56,16 @@ char first_non_whitespace_char(char const * s)
 {
     int l = strlen(s);
     int pos = 0;
-    while ((pos<l)&&is_whitespace_char(s[pos])) pos++;
+    while ((pos<l)&&is_whitespace_char(s[pos]))
+        pos++;
     return s[pos];
 }    
 
 char last_non_whitespace_char(char const * s)
 {
     int pos = strlen(s)-1;
-    while ((pos>=0) && is_whitespace_char(s[pos])) pos--;
+    while ((pos>=0) && is_whitespace_char(s[pos]))
+        pos--;
     return s[pos];
 }    
 
@@ -84,7 +88,7 @@ G__value exec_tempfile(string const & command)
     fout << "{" << endl << command << endl << "}" << endl;
     fout.close();
     G__store_undo_position();
-    retval=G__exec_tempfile(tmpfilename);
+    retval = G__exec_tempfile(tmpfilename);
     G__security_recover(stdout);
     remove(tmpfilename);
     free(tmpfilename);
@@ -122,19 +126,26 @@ void process_tempfile(string const & command)
     
     static unsigned out_count = 0;
     if (TYPES_EQUAL(retval,ref_ex)) {
-        if (ex::last_created_or_assigned_bp_can_be_converted_to_ex()) {
-            string varname = "Out"+ToString(++out_count);
+        string varname = "Out"+ToString(++out_count);
+        if (retval.obj.i!=ex::last_created_or_assigned_exp) {
+            // an ex was returned, but this is not the ex which was created last
+            // => this is not a temporary ex, but one that resides safely in memory
+            
+            // cout << "warning: using ex from retval (experimental)" << endl;
+            ex::dummy_bp=((ex *)(void *)(retval.obj.i))->bp;
+            exec_tempfile("ex "+varname+"(*ex::dummy_bp);");
+        } else if (ex::last_created_or_assigned_bp_can_be_converted_to_ex()) {
             //string varfill;
             //for (int i=4-int(log10(out_count)); i>0; --i)
             //    varfill += ' ';
-            exec_tempfile("ex "+varname+"(*ex::last_created_or_assigned_bp);\n"
-                          +"LLLAST=LLAST;\n"
-                          +"LLAST=LAST;\n"
-                          +"LAST="+varname+";\n"
-                          +"cout << \""+varname+" = \" << "+varname+" << endl << endl;");
+            exec_tempfile("ex "+varname+"(*ex::last_created_or_assigned_bp);");
         } else {
             cout << "warning: last_created_or_assigned_bp modified 0 or not evaluated or not dynallocated" << endl;
         }
+        exec_tempfile(string()+"LLLAST=LLAST;\n"
+                      +"LLAST=LAST;\n"
+                      +"LAST="+varname+";\n"
+                      +"cout << \""+varname+" = \" << "+varname+" << endl << endl;");
     }
 #endif // def OBSCURE_CINT_HACK
 }
@@ -147,7 +158,8 @@ void greeting(void)
          << "  __,  _______  requested, at this moment, for commercial use.  Send e-mail to" << endl
          << " (__) *       | <MXJ02154@niftyserve.or.jp>.  The registration is free." << endl
          << "  ._) i N a C | The GiNaC framework is Copyright by Johannes Gutenberg Univ.," << endl
-         << "<-------------' Germany and licensed under the terms and conditions of the GPL." << endl << endl;
+         << "<-------------' Germany and licensed under the terms and conditions of the GPL." << endl
+         << endl;
 }
 
 int main(void) 
@@ -155,7 +167,8 @@ int main(void)
     char *line;
     char prompt[G__ONELINE];
 
-    greeting();
+    if (isatty(0))
+        greeting();
 
     atexit(cleanup);
     signal(SIGTERM,sigterm_handler);
@@ -170,14 +183,14 @@ int main(void)
     while (!quit) {
         strcpy(prompt,"GiNaC> ");
         int open_braces = 0;
-        bool end_of_command=false;
+        bool end_of_command = false;
         string command;
         while (!end_of_command) {
             line = G__input(prompt);
-        
+            
             int pos = 0;
-            bool double_quote=false;
-            bool single_quote=false;
+            bool double_quote = false;
+            bool single_quote = false;
             while(line[pos]!='\0') {
                 switch(line[pos]) {
                 case '"':