- Improve the runtime type sytesm

- Update all languages to new type system
- Add DohSortList function
- Fix mzscheme Examples/Makefile


git-svn-id: https://swig.svn.sourceforge.net/svnroot/swig/trunk@6930 626c5289-ae23-0410-ae9c-e8d60b6d4f22

SWIG/Lib/swiginit.swg

@@ -0,0 +1,147 @@
+/*************************************************************************
+ * Type initialization:
+ * This problem is tough by the requirement that no dynamic 
+ * memory is used. Also, since swig_type_info structures store pointers to 
+ * swig_cast_info structures and swig_cast_info structures store pointers back
+ * to swig_type_info structures, we need some lookup code at initialization. 
+ * The idea is that swig generates all the structures that are needed. 
+ * The runtime then collects these partially filled structures. 
+ * The SWIG_InitializeModule function takes these initial arrays out of 
+ * swig_module, and does all the lookup, filling in the swig_module.types
+ * array with the correct data and linking the correct swig_cast_info
+ * structures together.
+
+ * The generated swig_type_info structures are assigned staticly to an initial 
+ * array. We just loop though that array, and handle each type individually.
+ * First we lookup if this type has been already loaded, and if so, use the
+ * loaded structure instead of the generated one. Then we have to fill in the
+ * cast linked list. The cast data is initially stored in something like a
+ * two-dimensional array. Each row corresponds to a type (there are the same
+ * number of rows as there are in the swig_type_initial array). Each entry in
+ * a column is one of the swig_cast_info structures for that type.
+ * The cast_initial array is actually an array of arrays, because each row has
+ * a variable number of columns. So to actually build the cast linked list,
+ * we find the array of casts associated with the type, and loop through it 
+ * adding the casts to the list. The one last trick we need to do is making
+ * sure the type pointer in the swig_cast_info struct is correct.
+
+ * First off, we lookup the cast->type name to see if it is already loaded. 
+ * There are three cases to handle:
+ *  1) If the cast->type has already been loaded AND the type we are adding
+ *     casting info to has not been loaded (it is in this module), THEN we
+ *     replace the cast->type pointer with the type pointer that has already
+ *     been loaded.
+ *  2) If BOTH types (the one we are adding casting info to, and the 
+ *     cast->type) are loaded, THEN the cast info has already been loaded by
+ *     the previous module so we just ignore it.
+ *  3) Finally, if cast->type has not already been loaded, then we add that
+ *     swig_cast_info to the linked list (because the cast->type) pointer will
+ *     be correct.
+**/
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+SWIGRUNTIME void
+SWIG_InitializeModule(void *clientdata) {
+  swig_type_info *type, *ret;
+  swig_cast_info *cast;
+  int i;
+  swig_module_info *module_head;
+  static int init_run = 0;
+
+  if (init_run) return;
+  init_run = 1;
+
+  /* Initialize the swig_module */
+  swig_module.type_initial = swig_type_initial;
+  swig_module.cast_initial = swig_cast_initial;
+
+  /* Try and load any already created modules */
+  module_head = SWIG_GetModule(clientdata);
+  if (module_head) {
+    swig_module.next = module_head->next;
+    module_head->next = &swig_module;
+  } else {
+    /* This is the first module loaded */
+    swig_module.next = &swig_module;
+    SWIG_SetModule(clientdata, &swig_module);
+  }
+		 
+  /* Now work on filling in swig_module.types */
+  for (i = 0; i < swig_module.size; ++i) {
+    type = 0;
+
+    /* if there is another module already loaded */
+    if (swig_module.next != &swig_module) {
+      type = SWIG_MangledTypeQueryModule(swig_module.next, &swig_module, swig_module.type_initial[i]->name);
+    }
+    if (type) {
+      /* Overwrite clientdata field */
+      if (swig_module.type_initial[i]->clientdata) type->clientdata = swig_module.type_initial[i]->clientdata;
+    } else {
+      type = swig_module.type_initial[i];
+    }
+
+    /* Insert casting types */
+    cast = swig_module.cast_initial[i];
+    while (cast->type) {
+    
+      /* Don't need to add information already in the list */
+      ret = 0;
+      if (swig_module.next != &swig_module) {
+        ret = SWIG_MangledTypeQueryModule(swig_module.next, &swig_module, cast->type->name);
+      }
+      if (ret && type == swig_module.type_initial[i]) {
+        cast->type = ret;
+        ret = 0;
+      }
+      
+      if (!ret) {
+        if (type->cast) {
+          type->cast->prev = cast;
+          cast->next = type->cast;
+        }
+        type->cast = cast;
+      }
+
+      cast++;
+    }
+
+    /* Set entry in modules->types array equal to the type */
+    swig_module.types[i] = type;
+  }
+}
+
+/* This function will propagate the clientdata field of type to
+* any new swig_type_info structures that have been added into the list
+* of equivalent types.  It is like calling
+* SWIG_TypeClientData(type, clientdata) a second time.
+*/
+SWIGRUNTIME void
+SWIG_PropagateClientData() {
+  int i;
+  swig_cast_info *equiv;
+  static int init_run = 0;
+
+  if (init_run) return;
+  init_run = 1;
+
+  for (i = 0; i < swig_module.size; i++) {
+    if (swig_module.types[i]->clientdata) {
+      equiv = swig_module.types[i]->cast;
+      while (equiv) {
+        if (!equiv->converter) {
+          if (equiv->type && !equiv->type->clientdata)
+            SWIG_TypeClientData(equiv->type, swig_module.types[i]->clientdata);
+        }
+        equiv = equiv->next;
+      }
+    }
+  }
+}
+
+#ifdef __cplusplus
+}
+#endif