File 0002-Add-support-for-Ruby-2.7.patch of Package swig

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File 0002-Add-support-for-Ruby-2.7.patch of Package swig (Revision bba03d38f050e7cc8bddb83516e0b6f8)

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From ad338d40827f9ef2cf18ba41831c671f93e401b6 Mon Sep 17 00:00:00 2001
From: Thomas Reitmayr <treitmayr@devbase.at>
Date: Mon, 30 Dec 2019 20:11:03 +0100
Subject: [PATCH 2/4] Add support for Ruby 2.7

This commit fixes the signatures of various callback methods
and cleans up the macro definitions used for casting callbacks.

Note that the transparent version of the macro RUBY_METHOD_FUNC
is currently masked behind RUBY_DEVEL, see commit
https://github.com/ruby/ruby/commit/1d91feaf13e0ffe04b2dabc6e77e4101b6d0bb07
In order to still support strict signature checking and prevent
nasty deprecation warnings, the use of RUBY_METHOD_FUNC had to
be replaced with VALUEFUNC.
---
 Lib/ruby/rubyclasses.swg   | 14 +++++++-------
 Lib/ruby/rubyhead.swg      | 26 +++++++++-----------------
 Lib/ruby/rubyprimtypes.swg | 15 ++++++++-------
 Lib/ruby/rubytracking.swg  | 10 +++++-----
 Source/Modules/ruby.cxx    | 22 +++++++++-------------
 5 files changed, 38 insertions(+), 49 deletions(-)

diff --git a/Lib/ruby/rubyclasses.swg b/Lib/ruby/rubyclasses.swg
index f7b51bdcc51a..b345fcebeb97 100644
--- a/Lib/ruby/rubyclasses.swg
+++ b/Lib/ruby/rubyclasses.swg
@@ -174,7 +174,7 @@ namespace swig {
       return rb_inspect(_obj);
     }
 
-    static VALUE swig_rescue_swallow(VALUE)
+    static VALUE swig_rescue_swallow(VALUE, VALUE)
     {
       /*
       VALUE errstr = rb_obj_as_string(rb_errinfo());
@@ -203,8 +203,8 @@ namespace swig {
         args.id     = op_id;
         args.nargs  = 1;
         args.target = VALUE(other);
-        ret = rb_rescue(RUBY_METHOD_FUNC(swig_rescue_funcall), VALUE(&args),
-                       (RUBY_METHOD_FUNC(swig_rescue_swallow)), Qnil);
+        ret = rb_rescue(VALUEFUNC(swig_rescue_funcall), VALUE(&args),
+                       (VALUEFUNC(swig_rescue_swallow)), Qnil);
       }
       if (ret == Qnil) {
         VALUE a = rb_funcall(         _obj, hash_id, 0 );
@@ -243,8 +243,8 @@ namespace swig {
       args.id     = op_id;
       args.nargs  = 0;
       args.target = Qnil;
-      ret = rb_rescue(RUBY_METHOD_FUNC(swig_rescue_funcall), VALUE(&args),
-                     (RUBY_METHOD_FUNC(swig_rescue_swallow)), Qnil);
+      ret = rb_rescue(VALUEFUNC(swig_rescue_funcall), VALUE(&args),
+                     (VALUEFUNC(swig_rescue_swallow)), Qnil);
       SWIG_RUBY_THREAD_END_BLOCK;
       return ret;
     }
@@ -262,8 +262,8 @@ namespace swig {
       args.id     = op_id;
       args.nargs  = 1;
       args.target = VALUE(other);
-      ret = rb_rescue(RUBY_METHOD_FUNC(swig_rescue_funcall), VALUE(&args),
-                     (RUBY_METHOD_FUNC(swig_rescue_swallow)), Qnil);
+      ret = rb_rescue(VALUEFUNC(swig_rescue_funcall), VALUE(&args),
+                     (VALUEFUNC(swig_rescue_swallow)), Qnil);
       SWIG_RUBY_THREAD_END_BLOCK;
       return GC_VALUE(ret);
     }
diff --git a/Lib/ruby/rubyhead.swg b/Lib/ruby/rubyhead.swg
index 90f07cf68365..9a0400eea971 100644
--- a/Lib/ruby/rubyhead.swg
+++ b/Lib/ruby/rubyhead.swg
@@ -110,26 +110,18 @@
  * can be passed as an argument to API functions like Data_Wrap_Struct()
  * and Data_Make_Struct().
  */
- 
-#ifdef __cplusplus
-#  ifndef RUBY_METHOD_FUNC /* These definitions should work for Ruby 1.4.6 */
-#    define PROTECTFUNC(f) ((VALUE (*)()) f)
-#    define VALUEFUNC(f) ((VALUE (*)()) f)
-#    define VOIDFUNC(f)  ((void (*)()) f)
-#  else
-#    ifndef ANYARGS /* These definitions should work for Ruby 1.6 */
-#      define PROTECTFUNC(f) ((VALUE (*)()) f)
-#      define VALUEFUNC(f) ((VALUE (*)()) f)
-#      define VOIDFUNC(f)  ((RUBY_DATA_FUNC) f)
-#    else /* These definitions should work for Ruby 1.7+ */
-#      define PROTECTFUNC(f) ((VALUE (*)(VALUE)) f)
-#      define VALUEFUNC(f) ((VALUE (*)(ANYARGS)) f)
-#      define VOIDFUNC(f)  ((RUBY_DATA_FUNC) f)
-#    endif
-#  endif
+#if defined(__cplusplus) && !defined(RB_METHOD_DEFINITION_DECL)
+#  define PROTECTFUNC(f) ((VALUE (*)(VALUE)) f)
+#  define VALUEFUNC(f) ((VALUE (*)(ANYARGS)) f)
+#  define VOIDFUNC(f) ((RUBY_DATA_FUNC) f)
+#  define VOID_ANYARGS_FUNC(f) ((void (*)(ANYARGS))(f))
+#  define INT_ANYARGS_FUNC(f) ((int (*)(ANYARGS))(f))
 #else
+#  define PROTECTFUNC(f) (f)
 #  define VALUEFUNC(f) (f)
 #  define VOIDFUNC(f) (f)
+#  define VOID_ANYARGS_FUNC(f) (f)
+#  define INT_ANYARGS_FUNC(f) (f)
 #endif
 
 /* Don't use for expressions have side effect */
diff --git a/Lib/ruby/rubyprimtypes.swg b/Lib/ruby/rubyprimtypes.swg
index 3a848191cd78..4b078deea0ee 100644
--- a/Lib/ruby/rubyprimtypes.swg
+++ b/Lib/ruby/rubyprimtypes.swg
@@ -10,15 +10,16 @@
 %fragment("SWIG_ruby_failed","header")
 {
 SWIGINTERN VALUE
-SWIG_ruby_failed(void)
+SWIG_ruby_failed(VALUE SWIGUNUSEDPARM(arg1), VALUE SWIGUNUSEDPARM(arg2))
 {
   return Qnil;
 } 
 }
 
 %define %ruby_aux_method(Type, Method, Action)
-SWIGINTERN VALUE SWIG_AUX_##Method##(VALUE *args)
+SWIGINTERN VALUE SWIG_AUX_##Method##(VALUE arg)
 {
+  VALUE *args = (VALUE *)arg;
   VALUE obj = args[0];
   VALUE type = TYPE(obj);
   Type *res = (Type *)(args[1]);
@@ -79,7 +80,7 @@ SWIG_AsVal_dec(long)(VALUE obj, long* val)
     VALUE a[2];
     a[0] = obj;
     a[1] = (VALUE)(&v);
-    if (rb_rescue(RUBY_METHOD_FUNC(SWIG_AUX_NUM2LONG), (VALUE)a, RUBY_METHOD_FUNC(SWIG_ruby_failed), 0) != Qnil) {
+    if (rb_rescue(VALUEFUNC(SWIG_AUX_NUM2LONG), (VALUE)a, VALUEFUNC(SWIG_ruby_failed), 0) != Qnil) {
       if (val) *val = v;
       return SWIG_OK;
     }
@@ -111,7 +112,7 @@ SWIG_AsVal_dec(unsigned long)(VALUE obj, unsigned long *val)
     VALUE a[2];
     a[0] = obj;
     a[1] = (VALUE)(&v);
-    if (rb_rescue(RUBY_METHOD_FUNC(SWIG_AUX_NUM2ULONG), (VALUE)a, RUBY_METHOD_FUNC(SWIG_ruby_failed), 0) != Qnil) {
+    if (rb_rescue(VALUEFUNC(SWIG_AUX_NUM2ULONG), (VALUE)a, VALUEFUNC(SWIG_ruby_failed), 0) != Qnil) {
       if (val) *val = v;
       return SWIG_OK;
     }
@@ -149,7 +150,7 @@ SWIG_AsVal_dec(long long)(VALUE obj, long long *val)
     VALUE a[2];
     a[0] = obj;
     a[1] = (VALUE)(&v);
-    if (rb_rescue(RUBY_METHOD_FUNC(SWIG_AUX_NUM2LL), (VALUE)a, RUBY_METHOD_FUNC(SWIG_ruby_failed), 0) != Qnil) {
+    if (rb_rescue(VALUEFUNC(SWIG_AUX_NUM2LL), (VALUE)a, VALUEFUNC(SWIG_ruby_failed), 0) != Qnil) {
       if (val) *val = v;
       return SWIG_OK;
     }
@@ -187,7 +188,7 @@ SWIG_AsVal_dec(unsigned long long)(VALUE obj, unsigned long long *val)
     VALUE a[2];
     a[0] = obj;
     a[1] = (VALUE)(&v);
-    if (rb_rescue(RUBY_METHOD_FUNC(SWIG_AUX_NUM2ULL), (VALUE)a, RUBY_METHOD_FUNC(SWIG_ruby_failed), 0) != Qnil) {
+    if (rb_rescue(VALUEFUNC(SWIG_AUX_NUM2ULL), (VALUE)a, VALUEFUNC(SWIG_ruby_failed), 0) != Qnil) {
       if (val) *val = v;
       return SWIG_OK;
     }
@@ -215,7 +216,7 @@ SWIG_AsVal_dec(double)(VALUE obj, double *val)
     VALUE a[2];
     a[0] = obj;
     a[1] = (VALUE)(&v);
-    if (rb_rescue(RUBY_METHOD_FUNC(SWIG_AUX_NUM2DBL), (VALUE)a, RUBY_METHOD_FUNC(SWIG_ruby_failed), 0) != Qnil) {
+    if (rb_rescue(VALUEFUNC(SWIG_AUX_NUM2DBL), (VALUE)a, VALUEFUNC(SWIG_ruby_failed), 0) != Qnil) {
       if (val) *val = v;
       return SWIG_OK;
     }
diff --git a/Lib/ruby/rubytracking.swg b/Lib/ruby/rubytracking.swg
index b9fb249d8024..221a68193964 100644
--- a/Lib/ruby/rubytracking.swg
+++ b/Lib/ruby/rubytracking.swg
@@ -32,7 +32,7 @@ extern "C" {
 */
 static st_table* swig_ruby_trackings = NULL;
 
-static VALUE swig_ruby_trackings_count(ANYARGS) {
+static VALUE swig_ruby_trackings_count(ID id, VALUE *var) {
   return SWIG2NUM(swig_ruby_trackings->num_entries);
 }
 
@@ -69,7 +69,7 @@ SWIGRUNTIME void SWIG_RubyInitializeTrackings(void) {
     swig_ruby_trackings = (st_table*)NUM2SWIG(trackings_value);
   }
 
-  rb_define_virtual_variable("SWIG_TRACKINGS_COUNT", swig_ruby_trackings_count, NULL);
+  rb_define_virtual_variable("SWIG_TRACKINGS_COUNT", VALUEFUNC(swig_ruby_trackings_count), VOID_ANYARGS_FUNC((rb_gvar_setter_t*)NULL));
 }
 
 /* Add a Tracking from a C/C++ struct to a Ruby object */
@@ -118,13 +118,13 @@ SWIGRUNTIME void SWIG_RubyUnlinkObjects(void* ptr) {
    to the passed callback function. */
 
 /* Proxy method to abstract the internal trackings datatype */
-static int swig_ruby_internal_iterate_callback(void* ptr, VALUE obj, void(*meth)(void* ptr, VALUE obj)) {
-  (*meth)(ptr, obj);
+static int swig_ruby_internal_iterate_callback(st_data_t ptr, st_data_t obj, st_data_t meth) {
+  ((void (*) (void *, VALUE))meth)((void *)ptr, (VALUE)obj);
   return ST_CONTINUE;
 }
 
 SWIGRUNTIME void SWIG_RubyIterateTrackings( void(*meth)(void* ptr, VALUE obj) ) {
-  st_foreach(swig_ruby_trackings, (int (*)(ANYARGS))&swig_ruby_internal_iterate_callback, (st_data_t)meth);
+  st_foreach(swig_ruby_trackings, INT_ANYARGS_FUNC(swig_ruby_internal_iterate_callback), (st_data_t)meth);
 }
 
 #ifdef __cplusplus
diff --git a/Source/Modules/ruby.cxx b/Source/Modules/ruby.cxx
index c8f582679b04..01b75befa504 100644
--- a/Source/Modules/ruby.cxx
+++ b/Source/Modules/ruby.cxx
@@ -2191,6 +2191,7 @@ public:
     String *tm;
     String *getfname, *setfname;
     Wrapper *getf, *setf;
+    const int assignable = is_assignable(n);
 
     // Determine whether virtual global variables shall be used
     // which have different getter and setter signatures,
@@ -2206,7 +2207,7 @@ public:
     getfname = Swig_name_wrapper(getname);
     Setattr(n, "wrap:name", getfname);
     Printv(getf->def, "SWIGINTERN VALUE\n", getfname, "(", NIL);
-    Printf(getf->def, (use_virtual_var) ? "ID id" : "VALUE self");
+    Printf(getf->def, (use_virtual_var) ? "ID id, VALUE *data" : "VALUE self");
     Printf(getf->def, ") {");
     Wrapper_add_local(getf, "_val", "VALUE _val");
 
@@ -2229,8 +2230,8 @@ public:
 
     Wrapper_print(getf, f_wrappers);
 
-    if (!is_assignable(n)) {
-      setfname = NewString("NULL");
+    if (!assignable) {
+      setfname = NewString("(rb_gvar_setter_t *)NULL");
     } else {
       /* create setter */
       String* docs = docstring(n, AUTODOC_SETTER);
@@ -2242,7 +2243,7 @@ public:
       Setattr(n, "wrap:name", setfname);
       Printf(setf->def, "SWIGINTERN ");
       if (use_virtual_var) {
-        Printv(setf->def, "void\n", setfname, "(VALUE _val, ID id) {", NIL);
+        Printv(setf->def, "void\n", setfname, "(VALUE _val, ID id, VALUE *data) {", NIL);
       } else {
         Printv(setf->def, "VALUE\n", setfname, "(VALUE self, VALUE _val) {", NIL);
       }
@@ -2273,7 +2274,7 @@ public:
     if (CPlusPlus) {
       Insert(getfname, 0, "VALUEFUNC(");
       Append(getfname, ")");
-      Insert(setfname, 0, (use_virtual_var) ? "(void (*)(ANYARGS))(" : "VALUEFUNC(");
+      Insert(setfname, 0, (use_virtual_var) ? "VOID_ANYARGS_FUNC(" : "VALUEFUNC(");
       Append(setfname, ")");
     }
 
@@ -2282,7 +2283,7 @@ public:
     case STATIC_VAR:
       /* C++ class variable */
       Printv(s, tab4, "rb_define_singleton_method(", klass->vname, ", \"", klass->strip(iname), "\", ", getfname, ", 0);\n", NIL);
-      if (!GetFlag(n, "feature:immutable")) {
+      if (assignable) {
 	Printv(s, tab4, "rb_define_singleton_method(", klass->vname, ", \"", klass->strip(iname), "=\", ", setfname, ", 1);\n", NIL);
       }
       Printv(klass->init, s, NIL);
@@ -2293,16 +2294,11 @@ public:
       assert(current == NO_CPP);
       if (!useGlobalModule) {
 	Printv(s, tab4, "rb_define_singleton_method(", modvar, ", \"", iname, "\", ", getfname, ", 0);\n", NIL);
-	if (!GetFlag(n, "feature:immutable")) {
+	if (assignable) {
 	  Printv(s, tab4, "rb_define_singleton_method(", modvar, ", \"", iname, "=\", ", setfname, ", 1);\n", NIL);
 	}
       } else {
-	Printv(s, tab4, "rb_define_virtual_variable(\"$", iname, "\", ", getfname, ", ", NIL);
-	if (GetFlag(n, "feature:immutable")) {
-	  Printv(s, tab4, "0);\n", NIL);
-	} else {
-	  Printv(s, tab4, setfname, ");\n", NIL);
-	}
+	Printv(s, tab4, "rb_define_virtual_variable(\"$", iname, "\", ", getfname, ", ", setfname, ");\n", NIL);
       }
       Printv(f_init, s, NIL);
       Delete(s);
-- 
2.26.0

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File 0002-Add-support-for-Ruby-2.7.patch of Package swig (Revision bba03d38f050e7cc8bddb83516e0b6f8)

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