Modified parameter handling using typemaps. 'Reference' example. Visibility hint now applies only to the global functions.

git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/branches/gsoc2008-maciekd@10603 626c5289-ae23-0410-ae9c-e8d60b6d4f22

Examples/Makefile.in

@@ -1105,11 +1105,9 @@ c: $(SRCS)
 	$(CC) -c $(CCSHARED) $(CFLAGS) $(ISRCS) $(SRCS) $(INCLUDES)
 	$(LDSHARED) $(CFLAGS) $(OBJS) $(IOBJS) $(LIBS) -o $(CLIBPREFIX)$(TARGET)$(SO)
 	$(CC) $(MAIN) $(TARGET)_proxy.c -L. -l$(TARGET)
-	LD_LIBRARY_PATH=`pwd`:LD_LIBRARY_PATH; export LD_LIBRARY_PATH
 	
 c_cpp: $(SRCS)
 	$(SWIG) -c++ -c $(SWIGOPT) $(INTERFACE)
 	$(CXX) -c $(CCSHARED) $(CXXFLAGS) $(ICXXSRCS) $(SRCS) $(CXXSRCS) $(INCLUDES)
 	$(CXXSHARED) $(CFLAGS) $(OBJS) $(IOBJS) $(LIBS) $(CPP_DLLIBS) -o $(CLIBPREFIX)$(TARGET)$(SO)
 	$(CC) $(MAIN) $(TARGET)_proxy.c -L. -l$(TARGET)
-	LD_LIBRARY_PATH=`pwd`:LD_LIBRARY_PATH; export LD_LIBRARY_PATH

Examples/c/class/Makefile

@@ -10,5 +10,5 @@ all::
 	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' MAIN='$(MAIN)' c_cpp
 
 clean:
-	rm -f *.o *.out *.so *.a
+	rm -f *.o *.out *.so *.a *.dll *.exe *_wrap* *_proxy* *~
 

Examples/c/reference/Makefile

@@ -0,0 +1,14 @@
+TOP        = ../..
+SWIG       = $(TOP)/../preinst-swig -debug-module 4
+CXXSRCS    = example.cxx
+TARGET     = example
+INTERFACE  = example.i
+MAIN       = main.c
+
+all::
+	$(MAKE) -f $(TOP)/Makefile CXXSRCS='$(CXXSRCS)' SWIG='$(SWIG)' \
+	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' MAIN='$(MAIN)' c_cpp
+
+clean:
+	rm -f *.o *.out *.so *.a *.dll *.exe *_wrap* *_proxy* *~
+

Examples/c/reference/example.cxx

@@ -0,0 +1,19 @@
+#include <stdio.h>
+
+#include "example.h"
+
+void foo_by_val(Bar foo) {
+  foo.set(123);
+  printf("inside foo_by_val: %d\n", foo.get());
+}
+
+void foo_by_ref(Bar& foo) {
+  foo.set(123);
+  printf("inside foo_by_ref: %d\n", foo.get());
+}
+
+void foo_by_ptr(Bar* foo) {
+  foo->set(123);
+  printf("inside foo_by_ptr: %d\n", foo->get());
+}
+

Examples/c/reference/example.h

@@ -0,0 +1,16 @@
+#include <stdio.h>
+
+class Bar {
+private:
+  int x;
+public:
+  Bar() : x(0) {}
+  ~Bar() {}
+  void set(int x) { this->x = x; }
+  int get() { return x; }
+};
+
+/*void foo_by_val(Bar bar);
+void foo_by_ref(Bar& bar);*/
+void foo_by_ptr(Bar* bar);
+

Examples/c/reference/example.i

@@ -0,0 +1,8 @@
+%module example
+
+%{
+#include "example.h"
+%}
+
+%include "example.h"
+

Examples/c/reference/main.c

@@ -0,0 +1,12 @@
+#include <stdio.h>
+
+#include "example_proxy.h"
+
+int main(int argc, char** argv) {
+  Bar * bar = new_Bar();
+  foo_by_ptr(bar);
+  
+  delete_Bar(bar);
+  return 0;
+}
+

Examples/c/simple/Makefile

@@ -1,5 +1,5 @@
 TOP        = ../..
-SWIG       = $(TOP)/../preinst-swig
+SWIG       = $(TOP)/../preinst-swig -debug-module 4 > tree.txt
 SRCS       = example.c
 TARGET     = example
 INTERFACE  = example.i
@@ -10,5 +10,5 @@ all::
 	TARGET='$(TARGET)' INTERFACE='$(INTERFACE)' MAIN='$(MAIN)' c
 
 clean:
-	rm -f *.o *.so *.out *.a *~
+	rm -f *.o *.so *.out *.a *.exe *.dll *_wrap* *_proxy* *~
 

Examples/c/simple/example.c

@@ -22,5 +22,3 @@ int gcd(int x, int y) {
   }
   return g;
 }
-
-

Examples/python/class/example.i

@@ -5,6 +5,10 @@
 #include "example.h"
 %}
 
+%typemap(in) double {
+  /* hello */
+}
+
 /* Let's just grab the original header file here */
 %include "example.h"
 

Lib/c/c.swg

@@ -0,0 +1,22 @@
+/* -----------------------------------------------------------------------------
+ * See the LICENSE file for information on copyright, usage and redistribution
+ * of SWIG, and the README file for authors - http://www.swig.org/release.html.
+ *
+ * c.swg
+ * ----------------------------------------------------------------------------- */ 
+
+%typemap(ctype) short       "short"
+%typemap(ctype) int         "int"
+%typemap(ctype) long        "long"
+%typemap(ctype) char        "char"
+%typemap(ctype) float       "float"
+%typemap(ctype) double      "double"
+%typemap(ctype) bool        "_Bool"
+%typemap(ctype) SWIGTYPE    "struct $*1_typeObj *"
+
+%typemap(in) short, int, long, char, float, double, bool "$1 = $input;"
+
+%typemap(in) SWIGTYPE {
+  $1 = ($1_type) $input->obj;
+}
+

Source/Include/swigwarn.h

@@ -252,6 +252,10 @@
 
 /* please leave 870-889 free for Php */
 
+#define WARN_C_TYPEMAP_CTYPE_UNDEF             890
+
+/* please leave 890-909 free for C */
+
 
 /* Feel free to claim any number in this space that's not currently being used. Just make sure you
    add an entry here */

Source/Modules/c.cxx

@@ -72,12 +72,12 @@ public:
   void emitSwigProtectSymbols(File *f) {
     Printf(f, "#ifndef SWIGPROTECT\n");
     Printf(f, "# if defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)\n");
-    Printf(f, "#   define SWIGPROTECT //\n");
+    Printf(f, "#   define SWIGPROTECT(x)\n");
     Printf(f, "# else\n");
     Printf(f, "#   if defined(__GNUC__) && defined(GCC_HASCLASSVISIBILITY)\n");
-    Printf(f, "#     define SWIGPROTECT __attribute__ ((visibility(\"protected\")))\n");
+    Printf(f, "#     define SWIGPROTECT(x) __attribute__ ((visibility(\"protected\"))) x\n");
     Printf(f, "#   else\n");
-    Printf(f, "#     define SWIGPROTECT //\n");
+    Printf(f, "#     define SWIGPROTECT(x)\n");
     Printf(f, "#   endif\n");
     Printf(f, "# endif\n");
     Printf(f, "#endif\n\n");
@@ -226,6 +226,26 @@ public:
     return SWIG_OK;
   }
 
+  /* -----------------------------------------------------------------------
+   * globalfunctionHandler()
+   * ------------------------------------------------------------------------ */
+
+  virtual int globalfunctionHandler(Node *n ) {
+    String* vis_hint = NewString("");
+    String* return_type_str = SwigType_str(Getattr(n, "type"), 0);
+    String* name = Getattr(n, "sym:name");
+    ParmList* parms = Getattr(n, "parms");
+
+    Language::globalfunctionHandler(n);
+
+    // add visibility hint for the compiler (do not override this symbol)
+    Printv(vis_hint, "SWIGPROTECT(", return_type_str, " ", name, "(", ParmList_str(parms), ");)\n\n", NIL);
+    Printv(f_wrappers, vis_hint, NIL);
+
+    Delete(vis_hint);
+    return SWIG_OK;
+  }
+
   /* ----------------------------------------------------------------------
    * functionWrapper()
    * ---------------------------------------------------------------------- */
@@ -236,6 +256,8 @@ public:
     String *return_type_str = SwigType_str(return_type, 0);
     String *arg_names = NewString("");
     ParmList *parms = Getattr(n, "parms");
+    Parm *p;
+    String* tm;
 
     // create new function wrapper object
     Wrapper *wrapper = NewWrapper();
@@ -250,16 +272,66 @@ public:
     // attach the standard typemaps
     emit_attach_parmmaps(parms, wrapper);
 
-    // prepare parameter list
-    Parm *p, *np;
+    // attach 'ctype' typemaps
+    Swig_typemap_attach_parms("ctype", parms, wrapper);
+
+    Setattr(n, "wrap:parms", parms);
+
+    // emit variables for holding parameters
+    emit_parameter_variables(parms, wrapper);
+
+    // prepare function definition
+    int gencomma = 0;
     for (p = parms; p; ) {
-      np = nextSibling(p);
-      SwigType *type = Getattr(p, "type");
-      Printv(wrapper->def, SwigType_str(type, 0), " ", Getattr(p, "lname"), np ? ", " : "", NIL);
-      Printv(arg_names, Getattr(p, "name"), np ? ", " : "", NIL);
-      p = np;
+
+      while (checkAttribute(p, "tmap:in:numinputs", "0")) {
+        p = Getattr(p, "tmap:in:next");
+      }
+
+      SwigType* type = Getattr(p, "type");
+      String* lname = Getattr(p, "lname");
+      String* c_parm_type = NewString("");
+      String* arg_name = NewString("");
+
+      Printf(arg_name, "c%s", lname);
+
+      if ((tm = Getattr(p, "tmap:ctype"))) {
+        if (Cmp(Getattr(p, "c:immutable"), "1") == 0) {
+          Printv(c_parm_type, SwigType_str(type, 0), NIL);
+        }
+        else {
+          Printv(c_parm_type, tm, NIL);
+        }
+      }
+      else {
+        Swig_warning(WARN_C_TYPEMAP_CTYPE_UNDEF, input_file, line_number, "No ctype typemap defined for %s\n", SwigType_str(type, 0));
+      }
+
+      Printv(arg_names, gencomma ? ", " : "", Getattr(p, "name"), NIL);
+      Printv(wrapper->def, gencomma ? ", " : "", c_parm_type, " ", arg_name, NIL);
+      gencomma = 1;
+ 
+      if ((tm = Getattr(p, "tmap:in"))) {
+        if (Cmp(Getattr(p, "c:immutable"), "1") == 0) {
+          // FIXME
+          Printv(wrapper->code, lname, " = ", arg_name, ";\n", NIL);
+        }
+        else {
+          Replaceall(tm, "$input", arg_name);
+          Setattr(p, "emit:input", arg_name);
+          Printf(wrapper->code, "%s\n", tm);
+        }
+        p = Getattr(p, "tmap:in:next");
+      }
+      else {
+        Swig_warning(WARN_TYPEMAP_IN_UNDEF, input_file, line_number, "Unable to use type %s as a function argument.\n", SwigType_str(type, 0));
+        p = nextSibling(p);
+      }
+      Delete(arg_name);
+      Delete(c_parm_type);
     }
-    Printv(wrapper->def, ") {", NIL);
+
+    Printf(wrapper->def, ") {");
 
     // declare wrapper function local variables
     emit_return_variable(n, return_type, wrapper);
@@ -277,19 +349,24 @@ public:
     if (shadow_flag) {
       // use shadow-type for parameter if supplied
       String* proto;
-      String* stype = Getattr(parms, "stype");
-      if (stype) {
-        Swig_save("temp", parms, "type", NIL);
-        Setattr(parms, "type", stype);
-        proto = ParmList_str(parms);
-        Swig_restore(parms);
+      if (parms) {
+        String* stype = Getattr(parms, "c:stype");
+        if (stype) {
+          Swig_save("temp", parms, "type", NIL);
+          Setattr(parms, "type", stype);
+          proto = ParmList_str(parms);
+          Swig_restore(parms);
+        }
+        else {
+          proto = ParmList_str(parms);
+        }
       }
       else {
-        proto = ParmList_str(parms);
+        proto = empty_string;
       }
 
       // use shadow-type for return type if supplied
-      SwigType* shadow_type = Getattr(n, "stype");
+      SwigType* shadow_type = Getattr(n, "c:stype");
       if (shadow_type) {
         return_type_str = SwigType_str(shadow_type, 0);
       }
@@ -329,12 +406,6 @@ public:
       Printv(f_shadow_header, return_type_str, " ", name, "(", proto, ");\n");
     }
 
-    // add visibility hint for the compiler
-    String* vis_hint = NewString("");
-    Printv(vis_hint, "SWIGPROTECT ", return_type_str, " ", name, "(", ParmList_str(parms), ");\n", NIL);
-    Printv(f_init, vis_hint, NIL);
-    Delete(vis_hint);
-
     // cleanup
     Delete(arg_names);
     Delete(wname);
@@ -395,7 +466,8 @@ public:
     Parm* p = NewParm(ctype, "self");
     stype = Copy(classname);
     SwigType_add_pointer(stype);
-    Setattr(p, "stype", stype);
+    Setattr(p, "c:stype", stype);
+    Setattr(p, "c:immutable", "1");
     if (parms)
       set_nextSibling(p, parms);
     Setattr(n, "parms", p);
@@ -461,7 +533,8 @@ public:
     Parm* p = NewParm(ctype, "self");
     stype = Copy(classname);
     SwigType_add_pointer(stype);
-    Setattr(p, "stype", stype);
+    Setattr(p, "c:stype", stype);
+    Setattr(p, "c:immutable", "1");
     Setattr(p, "lname", "arg1");
 
     // create second argument
@@ -533,7 +606,7 @@ public:
     Setattr(n, "type", ctype);
     stype = Copy(name);
     SwigType_add_pointer(stype);
-    Setattr(n, "stype", stype);
+    Setattr(n, "c:stype", stype);
 
     // generate action code
     Printv(code, "result = (", sobj_name, "*) malloc(sizeof(", sobj_name, "));\n", NIL);
@@ -576,7 +649,8 @@ public:
     Setattr(p, "lname", "arg1");
     stype = Copy(name);
     SwigType_add_pointer(stype);
-    Setattr(p, "stype", stype);
+    Setattr(p, "c:stype", stype);
+    Setattr(p, "c:immutable", "1");
     Setattr(n, "parms", p);
     Setattr(n, "type", "void");