add templatereduce option

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk/SWIG@6543 626c5289-ae23-0410-ae9c-e8d60b6d4f22

CHANGES.current

@@ -1,6 +1,55 @@
 Version 1.3.23 (in progress)
 ============================
 
+
+10/28/2004:mmatus
+	    - Added module and swig option "templatereduce" to force swig
+	      to reduce any type needed with templates, ie, in these cases
+
+                %module("templatereduce") test
+
+                template <class T> struct A { };
+
+                typedef int Int;
+	        %template(A_Int) A<Int>  ==>  %template(A_Int) A<int>
+
+                typedef B* Bp;
+	        %template(A_Bp) A<Bp>  ==>  %template(A_Bp) A<B*>
+
+              swig reduces the types Int and Bp to their primitives
+              int and B*. This is closer to the usual compiler
+              resolution mechanism, and it is really needed sometimes
+              when you mix templates + typedefs + specializations.
+
+	      Don't use it if you don't have any problem already,
+	      since the type reduction can interfere with some
+	      user typemaps, specially if you defined something like
+
+		   typedef int Int;
+		   %typemap(in) Int ...;
+
+              in this case, when you use the "templatereduce" option,
+	      swig will ignore the user typemap, since the "typedef int Int"
+	      will take precedence, and the usual "int" typemap will be
+	      applied. 
+
+	      Note that the previous case is not common, and should be
+	      avoided, ie, is not recommended to use a typedef and a
+	      typemap at the same time, specially if you are going to
+	      use templates + specializations.
+
+	    - Directors:
+
+	        virtual destructor is always emitted now, this doesn't
+	        cause any harm, and could solve some nasty and
+	        mysterious errors, like the one mentioned by Scott.
+
+		also the destructor is not in-lined, so, that can solve
+		some other mysterious errors when mixing directors +
+		imports + embedded applications + some specific compilers.
+		
+ 
+
 10/27/2004: wsfulton
             [C#] typemaps.i library file with INPUT, OUTPUT and INOUT typemaps added.
 

Source/CParse/cparse.h

@@ -45,6 +45,7 @@ extern SwigType *Swig_cparse_type(String *);
 extern Node     *Swig_cparse(File *);
 extern Hash     *Swig_cparse_features();
 extern void      SWIG_cparse_set_compact_default_args(int defargs);
+extern void      SWIG_cparse_template_reduce(int treduce);
 
 /* util.c */
 extern void      Swig_cparse_replace_descriptor(String *s);

Source/CParse/parser.y

@@ -171,6 +171,10 @@ void SWIG_cparse_set_compact_default_args(int defargs) {
   compact_default_args = defargs;
 }
 
+void SWIG_cparse_template_reduce(int treduce) {
+  template_reduce = treduce;
+}
+
 /* -----------------------------------------------------------------------------
  *                           Assist functions
  * ----------------------------------------------------------------------------- */

Source/Modules/main.cxx

@@ -83,6 +83,7 @@ static const char *usage2 = (const char*)"\
      -outdir <dir>   - Set language specific files output directory\n\
      -small          - Compile in virtual elimination & compact mode\n\
      -swiglib        - Report location of SWIG library and exit\n\
+     -templatereduce - Swig reduce all the typedefs in templates \n\
      -v              - Run in verbose mode\n\
      -version        - Print SWIG version number\n\
      -Wall           - Enable all warning messages\n\
@@ -332,6 +333,9 @@ void SWIG_getoptions(int argc, char *argv[])
 	  } else if (strcmp(argv[i],"-show_templates") == 0) {
 	    Swig_cparse_debug_templates(1);
 	    Swig_mark_arg(i);
+	  } else if (strcmp(argv[i],"-templatereduce") == 0) {
+	    SWIG_cparse_template_reduce(1);
+	    Swig_mark_arg(i);
           } else if (strcmp(argv[i],"-swiglib") == 0) {
 	    printf("%s\n", LibDir);
 	    SWIG_exit (EXIT_SUCCESS);