/* ----------------------------------------------------------------------------- 
 * 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.
 *
 * allegrocl.cxx
 *
 * ALLEGROCL language module for SWIG.
 * ----------------------------------------------------------------------------- */

char cvsroot_allegrocl_cxx[] = "$Id: allegrocl.cxx 10453 2008-05-15 21:18:44Z wsfulton $";

#include "swigmod.h"
#include "cparse.h"
#include <ctype.h>

// #define ALLEGROCL_DEBUG
// #define ALLEGROCL_WRAP_DEBUG
// #define ALLEGROCL_TYPE_DEBUG
// #define ALLEGROCL_CLASS_DEBUG

static File *f_cl = 0;
String *f_clhead = NewString("");
String *f_clwrap = NewString("(swig-in-package ())\n\n");
static File *f_cxx;
static File *f_cxx_header = 0;
static File *f_cxx_wrapper = 0;

static String *module_name = 0;
static String *swig_package = 0;

const char *identifier_converter = "identifier-convert-null";

static bool CWrap = true;	// generate wrapper file for C code by default. most correct.
static bool Generate_Wrapper = false;
static bool unique_swig_package = false;

static String *current_namespace = NewString("");
static String *current_package = NewString("");
static Hash *defined_namespace_packages = NewHash();
static Node *in_class = 0;

static Node *first_linked_type = 0;
static Hash *defined_foreign_types = NewHash();
static Hash *defined_foreign_ltypes = NewHash();

static String *anon_type_name = NewString("anontype");
static int anon_type_count = 0;

// stub
String *convert_literal(String *num_param, String *type, bool try_to_split = true);

class ALLEGROCL:public Language {
public:
  virtual void main(int argc, char *argv[]);
  virtual int top(Node *n);
  virtual int functionWrapper(Node *n);
  virtual int namespaceDeclaration(Node *n);
  virtual int constructorHandler(Node *n);
  virtual int destructorHandler(Node *n);
  virtual int globalvariableHandler(Node *n);
  virtual int variableWrapper(Node *n);
  virtual int constantWrapper(Node *n);
  virtual int memberfunctionHandler(Node *n);
  virtual int membervariableHandler(Node *n);
  virtual int classHandler(Node *n);
  virtual int emit_one(Node *n);
  virtual int enumDeclaration(Node *n);
  virtual int enumvalueDeclaration(Node *n);
  virtual int typedefHandler(Node *n);
  virtual int classforwardDeclaration(Node *n);
  virtual int templateDeclaration(Node *n);
  virtual int validIdentifier(String *s);
private:
  int emit_defun(Node *n, File *f_cl);
  int emit_dispatch_defun(Node *n);
  int emit_buffered_defuns(Node *n);
  int cClassHandler(Node *n);
  int cppClassHandler(Node *n);
};
static ALLEGROCL *allegrocl = 0;

static String *trim(String *str) {
  char *c = Char(str);
  while (*c != '\0' && isspace((int) *c))
    ++c;
  String *result = NewString(c);
  Chop(result);
  return result;
}

int is_integer(String *s) {
  char *c = Char(s);
  if (c[0] == '#' && (c[1] == 'x' || c[1] == 'o'))
    c += 2;

  while (*c) {
    if (!isdigit(*c))
      return 0;
    c++;
  }
  return 1;
}

String *class_from_class_or_class_ref(String *type) {
  SwigType *stripped = SwigType_strip_qualifiers(type);
  if (SwigType_isclass(stripped))
    return stripped;

  if (SwigType_ispointer(stripped) || SwigType_isreference(stripped)) {
    // Printf(stderr,"It is a pointer/reference. Is it a class?\n");
    SwigType_pop(stripped);
    if (SwigType_isclass(stripped)) {
      return stripped;
    }
  }
  return 0;
}

String *lookup_defined_foreign_type(String *k) {

#ifdef ALLEGROCL_TYPE_DEBUG
  Printf(stderr, "Looking up defined type '%s'.\n  Found: '%s'\n", k, Getattr(defined_foreign_types, k));
#endif

  return Getattr(defined_foreign_types, k);
}

String *listify_namespace(String *namespaze) {
  if (Len(namespaze) == 0)
    return NewString("()");
  String *result = NewStringf("(\"%s\")", namespaze);
  Replaceall(result, "::", "\" \"");
  return result;
}

String *namespaced_name(Node *n, String *ns = current_namespace) {

  return NewStringf("%s%s%s", ns, (Len(ns) != 0) ? "::" : "", Getattr(n, "sym:name"));
}

// "Namespace::Nested::Class2::Baz" -> "Baz"
static String *strip_namespaces(String *str) {
  char *result = Char(str);
  String *stripped_one;
  while ((stripped_one = Strstr(result, "::")))
    result = Char(stripped_one) + 2;
  return NewString(result);
}

static String *namespace_of(String *str) {
  char *p = Char(str);
  char *start = Char(str);
  char *result = 0;
  String *stripped_one;

  while ((stripped_one = Strstr(p, "::"))) {
    p = Char(stripped_one) + 2;
  }
  if (p > start) {
    int len = p - start - 1;
    result = (char *) malloc(len);
    strncpy(result, start, len - 1);
    result[len - 1] = 0;
  }
  return Char(result);
}

void add_linked_type(Node *n) {
#ifdef ALLEGROCL_CLASS_DEBUG
  Printf(stderr, "Adding linked node of type: %s(%s) %s(%x)\n\n", nodeType(n), Getattr(n, "storage"), Getattr(n, "name"), n);
#endif
  if (!first_linked_type) {
    first_linked_type = n;
    Setattr(n, "allegrocl:last_linked_type", n);
  } else {
    Node *t = Getattr(first_linked_type, "allegrocl:last_linked_type");
    Setattr(t, "allegrocl:next_linked_type", n);
    Setattr(first_linked_type, "allegrocl:last_linked_type", n);
  }
}

void replace_linked_type(Node *old, Node *new_node) {
  Node *prev = Getattr(old, "allegrocl:prev_linked_type");

  Setattr(new_node, "allegrocl:next_linked_type", Getattr(old, "allegrocl:next_linked_type"));
  if (prev)
    Setattr(prev, "allegrocl:next_linked_type", new_node);
  Delattr(old, "allegrocl:next_linked_type");
  Delattr(old, "allegrocl:prev_linked_type");

  // check if we're replacing the first link.
  if (first_linked_type == old) {
    first_linked_type = new_node;
    Setattr(first_linked_type, "allegrocl:last_linked_type", Getattr(old, "allegrocl:last_linked_type"));
  }
  // check if we're replacing the last link.
  if (Getattr(first_linked_type, "allegrocl:last_linked_type") == old)
    Setattr(first_linked_type, "allegrocl:last_linked_type", new_node);
}

void insert_linked_type_at(Node *old, Node *new_node, int before = 1) {
  Node *p = 0;

  if (!first_linked_type) {
    add_linked_type(new_node);
    return;
  }

  if (!before) {
    Setattr(new_node, "allegrocl:next_linked_type", Getattr(old, "allegrocl:next_linked_type"));
    Setattr(old, "allegrocl:next_linked_type", new_node);
    if (Getattr(first_linked_type, "allegrocl:last_linked_type") == old)
      Setattr(first_linked_type, "allegrocl:last_linked_type", new_node);
  } else {
    Node *c = first_linked_type;
    while (c) {
      if (c == old) {
	break;
      } else {
	p = c;
	c = Getattr(c, "allegrocl:next_linked_type");
      }
    }
    if (c == old) {
      Setattr(new_node, "allegrocl:next_linked_type", c);
      if (first_linked_type == c) {
	first_linked_type = new_node;
	Setattr(first_linked_type, "allegrocl:last_linked_type", Getattr(c, "allegrocl:last_linked_type"));
	Delattr(c, "allegrocl:last_linked_type");
      }
      if (p)
	Setattr(p, "allegrocl:next_linked_type", new_node);
    }
  }
}

Node *find_linked_type_by_name(String *name) {
  Node *p = 0;
  Node *c = first_linked_type;

  // Printf(stderr,"in find_linked_type_by_name '%s'...", name);
  while (c) {
    String *key = Getattr(c, "name");
    if (!Strcmp(key, name)) {
      break;
    } else {
      p = c;
      c = Getattr(c, "allegrocl:next_linked_type");
    }
  }
  // Printf(stderr,"exit find_linked_type_by_name.\n");

  if (p && c)
    Setattr(c, "allegrocl:prev_linked_type", p);
  // Printf(stderr,"find_linked_type_by_name: DONE\n");
  return c;
}

Node *get_primary_synonym_of(Node *n) {
  Node *p = Getattr(n, "allegrocl:synonym-of");
  Node *prim = n;

  // Printf(stderr, "getting primary synonym of %x\n", n);
  while (p) {
    // Printf(stderr, "   found one! %x\n", p);
    prim = p;
    p = Getattr(p, "allegrocl:synonym-of");
  }
  // Printf(stderr,"get_primary_syn: DONE. returning %s(%x)\n", Getattr(prim,"name"),prim);
  return prim;
}

void add_forward_referenced_type(Node *n, int overwrite = 0) {
  String *k = Getattr(n, "name");
  String *name = Getattr(n, "sym:name");
  String *ns = listify_namespace(current_namespace);

  String *val = Getattr(defined_foreign_types, k);

  if (!val || overwrite) {
#ifdef ALLEGROCL_TYPE_DEBUG
    Printf(stderr, "Adding forward reference for %s (overwrite=%d)\n", k, overwrite);
#endif
    Setattr(defined_foreign_types, Copy(k), NewString("forward-reference"));

    String *mangled_lname_gen = NewStringf("#.(swig-insert-id \"%s\" %s :type :class)", name, ns);

    Setattr(defined_foreign_ltypes, Copy(k), mangled_lname_gen);
    //    Printf(f_cl, ";; forward reference stub\n"
    //           "(swig-def-foreign-class \"%s\" (ff:foreign-pointer) (:class ))\n\n"
    //     , name);

#ifdef ALLEGROCL_CLASS_DEBUG
    Printf(stderr, "Linking forward reference type = %s(%x)\n", k, n);
#endif
    add_linked_type(n);
  }
}

void add_defined_foreign_type(Node *n, int overwrite = 0, String *k = 0, String *name = 0, String *ns = current_namespace) {

  String *val;
  String *ns_list = listify_namespace(ns);
  String *templated = n ? Getattr(n, "template") : 0;
  String *cDeclName = n ? Getattr(n, "classDeclaration:name") : 0;

#ifdef ALLEGROCL_CLASS_DEBUG
  Printf(stderr, "IN A-D-F-T. (n=%x, ow=%d, k=%s, name=%s, ns=%s\n", n, overwrite, k, name, ns);
  Printf(stderr, "    templated = '%x', classDecl = '%x'\n", templated, cDeclName);
#endif
  if (n) {
    if (!name)
      name = Getattr(n, "sym:name");
    if (!name)
      name = strip_namespaces(Getattr(n, "name"));
    if (templated) {
      k = namespaced_name(n);
    } else {
      String *kind_of_type = Getattr(n, "kind");

      /*
         For typedefs of the form:

         typedef __xxx { ... } xxx;

         add_defined_foreign_type will be called once via classHandler
         to define the type for 'struct __xxx', and once via typedefHandler
         to associate xxx with 'struct __xxx'. 

         We create the following type to identifier mappings:

         struct __xxx -> (swig-insert-id "xxx")    via classHand
         xxx -> (swig-insert-id "xxx")    via typedefHand

         and all references to this typedef'd struct will appear in 
         generated code as 'xxx'. For non-typedef'd structs, the
         classHand mapping will be

         struct __xxx -> (swig-insert-id "__xxx")
       */
      // Swig_print_node(n);
      String *unnamed = Getattr(n, "unnamed");
      if (kind_of_type && (!Strcmp(kind_of_type, "struct")
			   || !Strcmp(kind_of_type, "union")) && cDeclName && !unnamed) {
	k = NewStringf("%s %s", kind_of_type, cDeclName);
      } else {
	if (!Strcmp(nodeType(n), "enum") && unnamed) {
	  name = NewStringf("%s%d", anon_type_name, anon_type_count++);
	  k = NewStringf("enum %s", name);
	  Setattr(n, "allegrocl:name", name);

	} else {
	  k = k ? k : Getattr(n, "name");
	}
      }
    }
    // Swig_print_node(n);
  }

  if (SwigType_istemplate(name)) {
    String *temp = strip_namespaces(SwigType_templateprefix(name));
    name = NewStringf("%s%s%s", temp, SwigType_templateargs(name), SwigType_templatesuffix(name));
  }

  val = lookup_defined_foreign_type(k);

  int is_fwd_ref = 0;
  if (val)
    is_fwd_ref = !Strcmp(val, "forward-reference");

  if (!val || overwrite || is_fwd_ref) {
#ifdef ALLEGROCL_CLASS_DEBUG
    Printf(stderr, "Adding defined type '%s' = '%s' '%s' (overwrite=%d, in-class=%d)\n", k, ns, name, overwrite, in_class);
#endif
    String *mangled_name_gen = NewStringf("#.(swig-insert-id \"%s\" %s :type :type)", name, ns_list);
    String *mangled_lname_gen = NewStringf("#.(swig-insert-id \"%s\" %s :type :class)", name, ns_list);

    Setattr(defined_foreign_types, Copy(k), Copy(mangled_name_gen));
    Setattr(defined_foreign_ltypes, Copy(k), Copy(mangled_lname_gen));

    if (CPlusPlus) {
      bool cpp_struct = Strstr(k, "struct ") ? true : false;
      bool cpp_union = Strstr(k, "union ") ? true : false;

      String *cpp_type = 0;
      if (cpp_struct) {
	cpp_type = Copy(k);
	Replaceall(cpp_type, "struct ", "");
      } else if (cpp_union) {
	cpp_type = Copy(k);
	Replaceall(cpp_type, "union ", "");
      }

      if (cpp_struct || cpp_union) {
#ifdef ALLEGROCL_CLASS_DEBUG
	Printf(stderr, " Also adding defined type '%s' = '%s' '%s' (overwrite=%d)\n", cpp_type, ns, name, overwrite);
#endif
	Setattr(defined_foreign_types, Copy(cpp_type), Copy(mangled_name_gen));
	Setattr(defined_foreign_ltypes, Copy(cpp_type), Copy(mangled_lname_gen));
      }
    }
#ifdef ALLEGROCL_CLASS_DEBUG
    Printf(stderr, "looking to add %s/%s(%x) to linked_type_list...\n", k, name, n);
#endif
    if (is_fwd_ref) {
      // Printf(stderr,"*** 1\n");
      add_linked_type(n);
    } else {
      // Printf(stderr,"*** 1-a\n");
      if (SwigType_istemplate(k)) {
	SwigType *resolved = SwigType_typedef_resolve_all(k);
	// Printf(stderr,"*** 1-b\n");
	Node *match = find_linked_type_by_name(resolved);
	Node *new_node = 0;
	// Printf(stderr, "*** temp-1\n");
	if (n) {
	  new_node = n;
	} else {
#ifdef ALLEGROCL_CLASS_DEBUG
	  Printf(stderr, "Creating a new templateInst:\n");
	  Printf(stderr, "       name = %s\n", resolved);
	  Printf(stderr, "   sym:name = %s\n", name);
	  Printf(stderr, "  real-name = %s\n", k);
	  Printf(stderr, "       type = %s\n", resolved);
	  Printf(stderr, "         ns = %s\n\n", ns);
#endif
	  new_node = NewHash();
	  Setattr(new_node, "nodeType", "templateInst");
	  Setattr(new_node, "name", Copy(resolved));
	  Setattr(new_node, "sym:name", Copy(name));
	  Setattr(new_node, "real-name", Copy(k));
	  Setattr(new_node, "type", Copy(resolved));
	  Setattr(new_node, "allegrocl:namespace", ns);
	  Setattr(new_node, "allegrocl:package", ns);
	}

	if (!match) {
	  if (!Strcmp(nodeType(new_node), "templateInst") && in_class) {
	    /* this is an implicit template instantiation found while
	       walking a class. need to insert this into the
	       linked_type list before the current class definition */
#ifdef ALLEGROCL_CLASS_DEBUG
	    Printf(stderr, "trying to insert a templateInst before a class\n");
#endif
	    insert_linked_type_at(in_class, new_node);
#ifdef ALLEGROCL_CLASS_DEBUG
	    Printf(stderr, "DID IT!\n");
#endif
	  } else {
	    // Printf(stderr,"*** 3\n");
	    add_linked_type(new_node);
	  }
	  Setattr(new_node, "allegrocl:synonym:is-primary", "1");
	} else {
	  // a synonym type was found (held in variable 'match')
	  // Printf(stderr, "setting primary synonym of %x to %x\n", new_node, match);
	  if (new_node == match)
	    Printf(stderr, "Hey-4 * - '%s' is a synonym of iteself!\n", Getattr(new_node, "name"));
	  Setattr(new_node, "allegrocl:synonym-of", match);
	  // Printf(stderr,"*** 4\n");
	  add_linked_type(new_node);
	}
      } else {
	Node *match;

	if (!Strcmp(nodeType(n), "cdecl") && !Strcmp(Getattr(n, "storage"), "typedef")) {
	  SwigType *type = SwigType_strip_qualifiers(Getattr(n, "type"));
#ifdef ALLEGROCL_CLASS_DEBUG
	  Printf(stderr, "Examining typedef '%s' for class references.\n", type);
#endif
	  if (SwigType_isclass(type)) {
#ifdef ALLEGROCL_CLASS_DEBUG
	    Printf(stderr, "Found typedef of a class '%s'\n", type);
#endif
	    /* 
	       For the following parsed expression:

	       typedef struct __xxx { ... } xxx;

	       if n is of kind "class" (defining the class 'struct __xxx'
	       then we add n to the linked type list.

	       if n is "cdecl" node of storage "typedef" (to note
	       that xxx is equivalent to 'struct __xxx' then we don't
	       want to add this node to the linked type list.
	     */
	    String *defined_type = lookup_defined_foreign_type(type);
	    String *defined_key_type = lookup_defined_foreign_type(k);

	    if ((Strstr(type, "struct ") || Strstr(type, "union "))
		&& defined_type && !Strcmp(defined_type, defined_key_type)) {
	      // mark as a synonym but don't add to linked_type list
	      // Printf(stderr,"*** 4.8\n");
	      Setattr(n, "allegrocl:synonym", "1");
	    } else {
	      SwigType *lookup_type = SwigType_istemplate(type) ? SwigType_typedef_resolve_all(type) : Copy(type);
	      match = find_linked_type_by_name(lookup_type);
	      if (match) {
		Setattr(n, "allegrocl:synonym", "1");
		Setattr(n, "allegrocl:synonym-of", match);
		Setattr(n, "real-name", Copy(lookup_type));

		// Printf(stderr, "*** pre-5: found match of '%s'(%x)\n", Getattr(match,"name"),match);
		// if(n == match) Printf(stderr, "Hey-5 *** setting synonym of %x to %x\n", n, match);
		// Printf(stderr,"*** 5\n");
		add_linked_type(n);
	      } else {
#ifdef ALLEGROCL_CLASS_DEBUG
		Printf(stderr, "Creating classfoward node for struct stub in typedef.\n");
#endif
		Node *new_node = NewHash();
		String *symname = Copy(type);
		Replaceall(symname, "struct ", "");
		Setattr(new_node, "nodeType", "classforward");
		Setattr(new_node, "name", Copy(type));
		Setattr(new_node, "sym:name", symname);
		Setattr(new_node, "allegrocl:namespace", ns);
		Setattr(new_node, "allegrocl:package", ns);

		String *mangled_new_name = NewStringf("#.(swig-insert-id \"%s\" %s)", symname, ns_list);
		String *mangled_new_lname = NewStringf("#.(swig-insert-id \"%s\" %s :type :class)", symname, ns_list);
		Setattr(defined_foreign_types, Copy(symname), Copy(mangled_new_name));
		Setattr(defined_foreign_ltypes, Copy(symname), Copy(mangled_new_lname));

		// Printf(stderr,"Weird! Can't find the type!\n");
		add_forward_referenced_type(new_node);
		add_linked_type(new_node);

		Setattr(n, "allegrocl:synonym", "1");
		Setattr(n, "allegrocl:synonym-of", new_node);

		add_linked_type(n);
	      }
	      Delete(lookup_type);
	    }
	  } else {
	    // check if it's a pointer or reference to a class.
	    // Printf(stderr,"Checking if '%s' is a p. or r. to a class\n", type);
	    String *class_ref = class_from_class_or_class_ref(type);
	    if (class_ref) {
	      match = find_linked_type_by_name(class_ref);
	      Setattr(n, "allegrocl:synonym", "1");
	      Setattr(n, "allegrocl:synonym-of", match);
	      add_linked_type(n);
	    }
	  }
	  Delete(type);
	  // synonym types have already been added.
	  // Printf(stderr,"*** 10\n");
	  if (!Getattr(n, "allegrocl:synonym"))
	    add_linked_type(n);
	} else if (Getattr(n, "template")) {
	  // Printf(stderr, "this is a class template node(%s)\n", nodeType(n));
	  String *resolved = SwigType_typedef_resolve_all(Getattr(n, "name"));

#ifdef ALLEGROCL_CLASS_DEBUG
	  Printf(stderr, "   looking up %s for linked type match with %s...\n", Getattr(n, "sym:name"), resolved);
#endif
	  match = find_linked_type_by_name(resolved);
	  if (!match) {
#ifdef ALLEGROCL_CLASS_DEBUG
	    Printf(stderr, "found no implicit instantiation of %%template node %s(%x)\n", Getattr(n, "name"), n);
#endif
	    add_linked_type(n);
	  } else {
	    Node *primary = get_primary_synonym_of(match);

	    Setattr(n, "allegrocl:synonym:is-primary", "1");
	    Delattr(primary, "allegrocl:synonym:is-primary");
	    if (n == match)
	      Printf(stderr, "Hey-7 * setting synonym of %x to %x\n (match = %x)", primary, n, match);
	    Setattr(primary, "allegrocl:synonym-of", n);
	    // Printf(stderr,"*** 7\n");
	    add_linked_type(n);
	  }
	} else {
#ifdef ALLEGROCL_CLASS_DEBUG
	  Printf(stderr, "linking type '%s'(%x)\n", k, n);
#endif
	  // Printf(stderr,"*** 8\n");
	  add_linked_type(n);
	}
      }
    }
    Delete(mangled_name_gen);
    Delete(mangled_lname_gen);
  } else {
    Swig_warning(WARN_TYPE_REDEFINED, Getfile(n), Getline(n), "Attempting to store a foreign type that exists: %s (%s)\n", k, val);
  }

  Delete(ns_list);

#ifdef ALLEGROCL_CLASS_DEBUG
  Printf(stderr, "OUT A-D-F-T\n");
#endif
}

void note_implicit_template_instantiation(SwigType *t) {
  // the namespace of the implicit instantiation is not necessarily
  // current_namespace. Attempt to cull this from the type.
#ifdef ALLEGROCL_CLASS_DEBUG
  Printf(stderr, "culling namespace of '%s' from '%s'\n", t, SwigType_templateprefix(t));
#endif
  String *implicit_ns = namespace_of(SwigType_templateprefix(t));
  add_defined_foreign_type(0, 0, t, t, implicit_ns ? implicit_ns : current_namespace);
}

String *get_ffi_type(SwigType *ty, const String_or_char *name) {
  /* lookup defined foreign type.
     if it exists, it will return a form suitable for placing
     into lisp code to generate the def-foreign-type name */

#ifdef ALLEGROCL_TYPE_DEBUG
  Printf(stderr, "inside g_f_t: looking up '%s' '%s'\n", ty, name);
#endif

  String *found_type = lookup_defined_foreign_type(ty);

  if (found_type) {
#ifdef ALLEGROCL_TYPE_DEBUG
    Printf(stderr, "found_type '%s'\n", found_type);
#endif
    return (Strcmp(found_type, "forward-reference") ? Copy(found_type) : NewString(":void"));
  } else {
    Hash *typemap = Swig_typemap_search("ffitype", ty, name, 0);

    if (typemap) {
      String *typespec = Getattr(typemap, "code");

#ifdef ALLEGROCL_TYPE_DEBUG
      Printf(stderr, "g-f-t: found ffitype typemap '%s'\n%s\n", typespec, typemap);
#endif
      return NewString(typespec);
    }

    if (SwigType_istemplate(ty)) {
      note_implicit_template_instantiation(ty);
      return Copy(lookup_defined_foreign_type(ty));
    }
  }
  return 0;
}

String *lookup_defined_foreign_ltype(String *l) {

#ifdef ALLEGROCL_TYPE_DEBUG
  Printf(stderr, "Looking up defined ltype '%s'.\n  Found: '%s'\n", l, Getattr(defined_foreign_ltypes, l));
#endif
  return Getattr(defined_foreign_ltypes, l);
}

/* walk type and return string containing lisp version.
   recursive. */
String *internal_compose_foreign_type(SwigType *ty) {

  SwigType *tok;
  String *ffiType = NewString("");

  // for a function type, need to walk the parm list.
  while (Len(ty) != 0) {
    tok = SwigType_pop(ty);

    if (SwigType_isfunction(tok)) {
      // Generate Function wrapper
      Printf(ffiType, "(:function ");
      // walk parm list
      List *pl = SwigType_parmlist(tok);

      Printf(ffiType, "(");	// start parm list
      for (Iterator i = First(pl); i.item; i = Next(i)) {
	SwigType *f_arg = SwigType_strip_qualifiers(i.item);
	Printf(ffiType, "%s ", internal_compose_foreign_type(f_arg));
	Delete(f_arg);
      }
      Printf(ffiType, ")");	// end parm list.

      // do function return type.
      Printf(ffiType, " %s)", internal_compose_foreign_type(ty));
      break;
    } else if (SwigType_ispointer(tok) || SwigType_isreference(tok)) {
      Printf(ffiType, "(* %s)", internal_compose_foreign_type(ty));
    } else if (SwigType_isarray(tok)) {
      Printf(ffiType, "(:array %s", internal_compose_foreign_type(ty));
      String *atype = NewString("int");
      String *dim = convert_literal(SwigType_array_getdim(tok, 0), atype);
      Delete(atype);
      if (is_integer(dim)) {
	Printf(ffiType, " %s)", dim);
      } else {
	Printf(ffiType, " #| %s |#)", SwigType_array_getdim(tok, 0));
      }
    } else if (SwigType_ismemberpointer(tok)) {
      // temp
      Printf(ffiType, "(* %s)", internal_compose_foreign_type(ty));
    } else {
      String *res = get_ffi_type(tok, "");
      if (res) {
	Printf(ffiType, "%s", res);
      } else {
	SwigType *resolved_type = SwigType_typedef_resolve(tok);
	if (resolved_type) {
	  res = get_ffi_type(resolved_type, "");
	  if (res) {
	  } else {
	    res = internal_compose_foreign_type(resolved_type);
	  }
	  if (res)
	    Printf(ffiType, "%s", res);
	}
//         while(resolved_type) {
//        // the resolved_type may expand into something like p.NS1::NS2::SomeType
//        // for which get_ffi_type will not find any match (due to the p.).
//        // Printf(stderr, "\n  in resolved type loop on '%s'\n", resolved_type);
//           res = get_ffi_type(resolved_type, "");
//           if (res) {
//             Printf(ffiType, "%s", res);
//             break;
//           } else {
//          resolved_type = SwigType_typedef_resolve(resolved_type);
//           }
//       }
	if (!res) {
	  if (Strstr(tok, "struct ")) {
	    Swig_warning(WARN_TYPE_UNDEFINED_CLASS, Getfile(tok), Getline(tok), "Unable to find definition of '%s', assuming forward reference.\n", tok);
	  } else {
	    Printf(stderr, "Unable to compose foreign type of: '%s'\n", tok);
	  }
	  Printf(ffiType, "(* :void)");
	}
      }
    }
  }
  return ffiType;
}

String *compose_foreign_type(SwigType *ty, String *id = 0) {

  Hash *lookup_res = Swig_typemap_search("ffitype", ty, id, 0);
#ifdef ALLEGROCL_TYPE_DEBUG
  Printf(stderr, "compose_foreign_type: ENTER (%s)...\n ", ty);
  String *id_ref = SwigType_str(ty, id);
  Printf(stderr, "looking up typemap for %s, found '%s'(%x)\n",
	 id_ref, lookup_res ? Getattr(lookup_res, "code") : 0, lookup_res);
#endif
  /* should we allow named lookups in the typemap here? YES! */
  /* unnamed lookups should be found in get_ffi_type, called
     by internal_compose_foreign_type(), below. */
  if(id && lookup_res) {
#ifdef ALLEGROCL_TYPE_DEBUG
    Printf(stderr, "compose_foreign_type: EXIT-1 (%s)\n ", Getattr(lookup_res, "code"));
#endif
    return NewString(Getattr(lookup_res, "code"));
  }

  SwigType *temp = SwigType_strip_qualifiers(ty);
  String *res = internal_compose_foreign_type(temp);
  Delete(temp);

#ifdef ALLEGROCL_TYPE_DEBUG
  Printf(stderr, "compose_foreign_type: EXIT (%s)\n ", res);
#endif

  return res;
}

void update_package_if_needed(Node *n, File *f = f_clwrap) {
#ifdef ALLEGROCL_DEBUG
  Printf(stderr, "update_package: ENTER... \n");
  Printf(stderr, "  current_package = '%s'\n", current_package);
  Printf(stderr, "     node_package = '%s'\n", Getattr(n, "allegrocl:package"));
  Printf(stderr, "   node(%x) = '%s'\n", n, Getattr(n, "name"));
#endif
  String *node_package = Getattr(n, "allegrocl:package");
  if (Strcmp(current_package, node_package)) {
    String *lispy_package = listify_namespace(node_package);

    Delete(current_package);
    current_package = Copy(node_package);
    Printf(f, "\n(swig-in-package %s)\n", lispy_package);
    Delete(lispy_package);
  }
#ifdef ALLEGROCL_DEBUG
  Printf(stderr, "update_package: EXIT.\n");
#endif
}

static String *mangle_name(Node *n, char const *prefix = "ACL", String *ns = current_namespace) {
  String *suffix = Getattr(n, "sym:overname");
  String *pre_mangled_name = NewStringf("%s_%s__%s%s", prefix, ns, Getattr(n, "sym:name"), suffix);
  String *mangled_name = Swig_name_mangle(pre_mangled_name);
  Delete(pre_mangled_name);
  return mangled_name;
}

/* utilities */

/* remove a pointer from ffitype. non-destructive. 
   (* :char) ==> :char
   (* (:array :int 30)) ==> (:array :int 30) */
String *dereference_ffitype(String *ffitype) {
   char *start;
   char *temp = Char(ffitype);
   String *reduced_type = 0;

   if(temp && temp[0] == '(' && temp[1] == '*') {
      temp += 2;

      // walk past start of pointer references
      while(*temp == ' ') temp++;
      start = temp;
      // temp = Char(reduced_type);
      reduced_type = NewString(start);
      temp = Char(reduced_type);
      // walk to end of string. remove closing paren
      while(*temp != '\0') temp++;
      *(--temp) = '\0';
   }

   return reduced_type ? reduced_type : Copy(ffitype);
}

/* returns new string w/ parens stripped */
String *strip_parens(String *string) {
  string = Copy(string);
  Replaceall(string, "(", "");
  Replaceall(string, ")", "");
  return string;
}

int ALLEGROCL::validIdentifier(String *s) {
  char *c = Char(s);

  bool got_dot = false;
  bool only_dots = true;

  /* Check that s is a valid common lisp symbol. There's a lot of leeway here.
     A common lisp symbol is essentially any token that's not a number and
     does not consist of only dots. 

     We are expressly not allowing spaces in identifiers here, but spaces
     could be added via the identifier converter. */
  while (*c) {
    if (*c == '.') {
      got_dot = true;
    } else {
      only_dots = false;
    }
    if (!isgraph(*c))
      return 0;
    c++;
  }

  return (got_dot && only_dots) ? 0 : 1;
}

String *infix_to_prefix(String *val, char split_op, const String *op, String *type) {
  List *ored = Split(val, split_op, -1);

  // some float hackery
  if (((split_op == '+') || (split_op == '-')) && Len(ored) == 2 &&
      (SwigType_type(type) == T_FLOAT || SwigType_type(type) == T_DOUBLE || SwigType_type(type) == T_LONGDOUBLE)) {
    // check that we're not splitting a float
    String *possible_result = convert_literal(val, type, false);
    if (possible_result)
      return possible_result;

  }
  // try parsing the split results. if any part fails, kick out.
  bool part_failed = false;
  if (Len(ored) > 1) {
    String *result = NewStringf("(%s", op);
    for (Iterator i = First(ored); i.item; i = Next(i)) {
      String *converted = convert_literal(i.item, type);
      if (converted) {
	Printf(result, " %s", converted);
	Delete(converted);
      } else {
	part_failed = true;
	break;
      }
    }
    Printf(result, ")");
    Delete(ored);
    return part_failed ? 0 : result;
  } else {
    Delete(ored);
  }
  return 0;
}

/* To be called by code generating the lisp interface
   Will return a containing the literal based on type.
   Will return null if there are problems.

   try_to_split defaults to true (see stub above).
 */
String *convert_literal(String *literal, String *type, bool try_to_split) {
  String *num_param = Copy(literal);
  String *trimmed = trim(num_param);
  String *num = strip_parens(trimmed), *res = 0;
  char *s = Char(num);

  String *ns = listify_namespace(current_namespace);

  // very basic parsing of infix expressions.
  if (try_to_split) {
    if ((res = infix_to_prefix(num, '|', "logior", type)))
      return res;
    if ((res = infix_to_prefix(num, '&', "logand", type)))
      return res;
    if ((res = infix_to_prefix(num, '^', "logxor", type)))
      return res;
    if ((res = infix_to_prefix(num, '*', "*", type)))
      return res;
    if ((res = infix_to_prefix(num, '/', "/", type)))
      return res;
    if ((res = infix_to_prefix(num, '+', "+", type)))
      return res;
    if ((res = infix_to_prefix(num, '-', "-", type)))
      return res;
    //  if( (res = infix_to_prefix(num, '<<', "ash", type)) ) return res;  
  }

  if (SwigType_type(type) == T_FLOAT || SwigType_type(type) == T_DOUBLE || SwigType_type(type) == T_LONGDOUBLE) {
    // Use CL syntax for float literals 
    String *oldnum = Copy(num);

    // careful. may be a float identifier or float constant.
    char *num_start = Char(num);
    char *num_end = num_start + strlen(num_start) - 1;

    bool is_literal = isdigit(*num_start) || (*num_start == '.');

    String *lisp_exp = 0;
    if (is_literal) {
      if (*num_end == 'f' || *num_end == 'F') {
	lisp_exp = NewString("f");
      } else {
	lisp_exp = NewString("d");
      }

      if (*num_end == 'l' || *num_end == 'L' || *num_end == 'f' || *num_end == 'F') {
	*num_end = '\0';
	num_end--;
      }

      int exponents = Replaceall(num, "e", lisp_exp) + Replaceall(num, "E", lisp_exp);

      if (!exponents)
	Printf(num, "%s0", lisp_exp);

      if (exponents > 1 || (exponents + Replaceall(num, ".", ".") == 0)) {
	// Printf(stderr, "Can't parse '%s' as type '%s'.\n", oldnum, type);
	Delete(num);
	num = 0;
      }
    } else {
      String *id = NewStringf("#.(swig-insert-id \"%s\" %s :type :constant)",
			      num, ns);
      Delete(num);
      num = id;
    }

    Delete(oldnum);
    Delete(trimmed);
    Delete(ns);
    return num;
  } else if (SwigType_type(type) == T_CHAR) {
    /* Use CL syntax for character literals */
    Delete(num);
    Delete(trimmed);
    return NewStringf("#\\%s", num_param);
  } else if (SwigType_type(type) == T_STRING) {
    /* Use CL syntax for string literals */
    Delete(num);
    Delete(trimmed);
    return NewStringf("\"%s\"", num_param);
  } else if (Len(num) >= 1 && (isdigit(s[0]) || s[0] == '+' || s[0] == '-')) {
    /* use CL syntax for numbers */
    String *oldnum = Copy(num);
    int usuffixes = Replaceall(num, "u", "") + Replaceall(num, "U", "");
    int lsuffixes = Replaceall(num, "l", "") + Replaceall(num, "L", "");
    if (usuffixes > 1 || lsuffixes > 1) {
      Printf(stderr, "Weird!! number %s looks invalid.\n", oldnum);
      SWIG_exit(EXIT_FAILURE);
    }
    s = Char(num);
    if (s[0] == '0' && Len(num) >= 2) {
      /*octal or hex */
      res = NewStringf("#%c%s", tolower(s[1]) == 'x' ? 'x' : 'o', s + 2);
      Delete(num);
    } else {
      res = num;
    }
    Delete(oldnum);
    Delete(trimmed);
    return res;
  } else if (allegrocl->validIdentifier(num)) {
    /* convert C/C++ identifiers to CL symbols */
    res = NewStringf("#.(swig-insert-id \"%s\" %s :type :constant)", num, ns);
    Delete(num);
    Delete(trimmed);
    Delete(ns);
    return res;
  } else {
    Delete(trimmed);
    return num;
  }
}


void emit_stub_class(Node *n) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_stub_class: ENTER... '%s'(%x)\n", Getattr(n, "sym:name"), n);
#endif


  String *name = Getattr(n, "sym:name");

  if (Getattr(n, "allegrocl:synonym:already-been-stubbed"))
    return;

  if (SwigType_istemplate(name)) {
    String *temp = strip_namespaces(SwigType_templateprefix(name));
    name = NewStringf("%s%s%s", temp, SwigType_templateargs(name), SwigType_templatesuffix(name));

    Delete(temp);
  } else {
    name = strip_namespaces(name);
  }

  // Printf(f_clhead, ";; from emit-stub-class\n");
  update_package_if_needed(n, f_clhead);
  Printf(f_clhead, ";; class template stub.\n");
  Printf(f_clhead, "(swig-def-foreign-stub \"%s\")\n", name);

  Setattr(n, "allegrocl:synonym:already-been-stubbed", "1");

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_stub_class: EXIT\n");
#endif
}

void emit_synonym(Node *synonym) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_synonym: ENTER... \n");
#endif

  // Printf(stderr,"in emit_synonym for %s(%x)\n", Getattr(synonym,"name"),synonym);
  int is_tempInst = !Strcmp(nodeType(synonym), "templateInst");
  String *synonym_type;

  Node *of = get_primary_synonym_of(synonym);

  if (is_tempInst) {
    // Printf(stderr, "*** using real-name '%s'\n", Getattr(synonym,"real-name"));
    synonym_type = Getattr(synonym, "real-name");
  } else {
    // Printf(stderr, "*** using name '%s'\n", Getattr(synonym,"name"));
    synonym_type = Getattr(synonym, "name");
  }

  String *synonym_ns = listify_namespace(Getattr(synonym, "allegrocl:namespace"));
  String *syn_ltype, *syn_type, *of_ltype;
  // String *of_cdeclname = Getattr(of,"allegrocl:classDeclarationName");
  String *of_ns = Getattr(of, "allegrocl:namespace");
  String *of_ns_list = listify_namespace(of_ns);
  // String *of_name = of_cdeclname ? NewStringf("struct %s", Getattr(of,"name")) : NewStringf("%s::%s", of_ns, Getattr(of,"sym:name"));
  // String *of_name = NewStringf("%s::%s", of_ns, Getattr(of,"sym:name"));
  String *of_name = namespaced_name(of, of_ns);

  if (CPlusPlus && !Strcmp(nodeType(synonym), "cdecl")) {
	  syn_ltype = NewStringf("#.(swig-insert-id \"%s\" %s :type :class)",
				 strip_namespaces(Getattr(synonym, "real-name")), synonym_ns);
	  syn_type = NewStringf("#.(swig-insert-id \"%s\" %s :type :type)",
				strip_namespaces(Getattr(synonym, "real-name")), synonym_ns);
  } else {
	  syn_ltype = lookup_defined_foreign_ltype(synonym_type);
	  syn_type = lookup_defined_foreign_type(synonym_type);
  }

  of_ltype = lookup_defined_foreign_ltype(of_name);

  // Printf(f_clhead,";; from emit-synonym\n");
  Printf(f_clhead, "(swig-def-synonym-type %s\n   %s\n   %s)\n", syn_ltype, of_ltype, syn_type);

  Delete(synonym_ns);
  Delete(of_ns_list);
  Delete(of_name);

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_synonym: EXIT\n");
#endif
}

void emit_full_class(Node *n) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_full_class: ENTER... \n");
#endif

  String *name = Getattr(n, "sym:name");
  String *kind = Getattr(n, "kind");

  // Printf(stderr,"in emit_full_class: '%s'(%x).", Getattr(n,"name"),n);
  if (Getattr(n, "allegrocl:synonym-of")) {
    // Printf(stderr,"but it's a synonym of something.\n");
    update_package_if_needed(n, f_clhead);
    emit_synonym(n);
    return;
  }
  // collect superclasses
  String *bases = Getattr(n, "bases");
  String *supers = NewString("(");
  if (bases) {
    int first = 1;
    for (Iterator i = First(bases); i.item; i = Next(i)) {
      if (!first)
	Printf(supers, " ");
      String *s = lookup_defined_foreign_ltype(Getattr(i.item, "name"));
      // String *name = Getattr(i.item,"name");
      if (s) {
	Printf(supers, "%s", s);
      } else {
#ifdef ALLEGROCL_TYPE_DEBUG
	Printf(stderr, "emit_templ_inst: did not find ltype for base class %s (%s)", Getattr(i.item, "name"), Getattr(n, "allegrocl:namespace"));
#endif
      }
    }
  } else {
    Printf(supers, "ff:foreign-pointer");
  }

  Printf(supers, ")");

  // Walk children to generate type definition.
  String *slotdefs = NewString("   ");

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "  walking children...\n");
#endif

  Node *c;
  for (c = firstChild(n); c; c = nextSibling(c)) {
    String *storage_type = Getattr(c, "storage");
    if ((!Strcmp(nodeType(c), "cdecl") && (!storage_type || Strcmp(storage_type, "typedef")))) {
      String *access = Getattr(c, "access");

      // hack. why would decl have a value of "variableHandler" and now "0"?
      String *childDecl = Getattr(c, "decl");
      // Printf(stderr,"childDecl = '%s' (%s)\n", childDecl, Getattr(c,"view"));
      if (!Strcmp(childDecl, "0"))
	childDecl = NewString("");

      SwigType *childType;
      String *cname;

      // don't include types for private slots (yet). spr33959.
      if(access && Strcmp(access,"public")) {
	      childType = NewStringf("int");
	      cname = NewString("nil");
      } else {
	      childType = NewStringf("%s%s", childDecl, Getattr(c, "type"));
	      cname = Copy(Getattr(c, "name"));
      }

      if (!SwigType_isfunction(childType)) {
	// Printf(slotdefs, ";;; member functions don't appear as slots.\n ");
	// Printf(slotdefs, ";; ");
	String *ns = listify_namespace(Getattr(n, "allegrocl:package"));

#ifdef ALLEGROCL_WRAP_DEBUG
	Printf(stderr, "slot name = '%s' ns = '%s' class-of '%s' and type = '%s'\n", cname, ns, name, childType);
#endif
	Printf(slotdefs, "(#.(swig-insert-id \"%s\" %s :type :slot :class \"%s\") %s)", cname, ns, name, compose_foreign_type(childType));
	Delete(ns);
	if (access && Strcmp(access, "public"))
	  Printf(slotdefs, " ;; %s member", access);

	Printf(slotdefs, "\n   ");
      }
      Delete(childType);
      Delete(cname);
    }
  }

  String *ns_list = listify_namespace(Getattr(n, "allegrocl:namespace"));
  update_package_if_needed(n, f_clhead);
  Printf(f_clhead, "(swig-def-foreign-class \"%s\"\n %s\n  (:%s\n%s))\n\n", name, supers, kind, slotdefs);

  Delete(supers);
  Delete(ns_list);

  Setattr(n, "allegrocl:synonym:already-been-stubbed", "1");
#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_full_class: EXIT\n");
#endif

}

void emit_class(Node *n) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_class: ENTER... '%s'(%x)\n", Getattr(n, "sym:name"), n);
#endif

  int is_tempInst = !Strcmp(nodeType(n), "templateInst");

  String *ns_list = listify_namespace(Getattr(n, "allegrocl:namespace"));
  String *name = Getattr(n, is_tempInst ? "real-name" : "name");

  if (SwigType_istemplate(name)) {
    String *temp = strip_namespaces(SwigType_templateprefix(name));
    name = NewStringf("%s%s%s", temp, SwigType_templateargs(name), SwigType_templatesuffix(name));

    Delete(temp);
  } else {
    name = strip_namespaces(name);
  }

  if (Getattr(n, "allegrocl:synonym:is-primary")) {
    // Printf(stderr,"  is primary... ");
    if (is_tempInst) {
      emit_stub_class(n);
    } else {
      emit_full_class(n);
    }
  } else {
    // Node *primary = Getattr(n,"allegrocl:synonym-of");
    Node *primary = get_primary_synonym_of(n);
    if (primary && (primary != n)) {
      // Printf(stderr,"  emitting synonym... ");
      emit_stub_class(primary);
      update_package_if_needed(n, f_clhead);
      emit_synonym(n);
    } else {
      emit_full_class(n);
    }
  }
  // Printf(stderr,"DONE\n");
  Delete(name);
  Delete(ns_list);

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_class: EXIT\n");
#endif
}

void emit_typedef(Node *n) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_typedef: ENTER... \n");
#endif

  String *name;
  String *sym_name = Getattr(n, "sym:name");
  String *type = NewStringf("%s%s", Getattr(n, "decl"), Getattr(n, "type"));
  String *lisp_type = compose_foreign_type(type);
  Delete(type);
  Node *in_class = Getattr(n, "allegrocl:typedef:in-class");

  // Printf(stderr,"in emit_typedef: '%s'(%x).",Getattr(n,"name"),n);
  if (Getattr(n, "allegrocl:synonym-of")) {
    // Printf(stderr," but it's a synonym of something.\n");
    emit_synonym(n);
    return;
  }

  if (in_class) {
    String *class_name = Getattr(in_class, "name");
    if (SwigType_istemplate(class_name)) {
      String *temp = strip_namespaces(SwigType_templateprefix(class_name));
      class_name = NewStringf("%s%s%s", temp, SwigType_templateargs(class_name), SwigType_templatesuffix(class_name));
      Delete(temp);
    }

    name = NewStringf("%s__%s", class_name, sym_name);
    Setattr(n, "allegrocl:in-class", in_class);
  } else {
    name = sym_name ? Copy(sym_name) : Copy(Getattr(n, "name"));
  }

  // leave these in for now. might want to change these to def-foreign-class at some point.
//  Printf(f_clhead, ";; %s\n", SwigType_typedef_resolve_all(lisp_type));
  // Swig_print_node(n);
  Printf(f_clhead, "(swig-def-foreign-type \"%s\"\n  %s)\n", name, lisp_type);

  Delete(name);

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_typedef: EXIT\n");
#endif
}

void emit_enum_type_no_wrap(Node *n) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_enum_type_no_wrap: ENTER... \n");
#endif

  String *unnamed = Getattr(n, "unnamed");
  String *name;
  //  SwigType *enumtype;

  name = unnamed ? Getattr(n, "allegrocl:name") : Getattr(n, "sym:name");
  SwigType *tmp = NewStringf("enum %s", unnamed ? unnamed : name);

  Hash *typemap = Swig_typemap_search("ffitype", tmp, 0, 0);
  String *enumtype = Getattr(typemap, "code");
  // enumtype = compose_foreign_type(tmp);
  Delete(tmp);

  if (name) {
    String *ns = listify_namespace(current_namespace);

    Printf(f_clhead, "(swig-def-foreign-type \"%s\" %s)\n", name, enumtype);
    Delete(ns);

    // walk children.
    Node *c;
    for (c = firstChild(n); c; c = nextSibling(c)) {
      if (!Getattr(c, "error")) {
	String *val = Getattr(c, "enumvalue");
	if (!val)
	  val = Getattr(c, "enumvalueex");
	String *converted_val = convert_literal(val, Getattr(c, "type"));
	String *valname = Getattr(c, "sym:name");

	if (converted_val) {
	  Printf(f_clhead, "(swig-defconstant \"%s\" %s)\n", valname, converted_val);
	  Delete(converted_val);
	} else {
	  Swig_warning(WARN_LANG_DISCARD_CONST, Getfile(n), Getline(n), "Unable to parse enum value '%s'. Setting to NIL\n", val);
	  Printf(f_clhead, "(swig-defconstant \"%s\" nil #| %s |#)\n", valname, val);
	}
      }
    }
  }
  Printf(f_clhead, "\n");

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_enum_type_no_wrap: EXIT\n");
#endif

}

void emit_enum_type(Node *n) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_enum_type: ENTER... \n");
#endif

  if (!Generate_Wrapper) {
    emit_enum_type_no_wrap(n);
    return;
  }

  String *unnamed = Getattr(n, "unnamed");
  String *name;
  // SwigType *enumtype;

  name = unnamed ? Getattr(n, "allegrocl:name") : Getattr(n, "sym:name");
  SwigType *tmp = NewStringf("enum %s", unnamed ? unnamed : name);
  // SwigType *tmp = NewStringf("enum ACL_SWIG_ENUM_NAME");

  Hash *typemap = Swig_typemap_search("ffitype", tmp, 0, 0);
  String *enumtype = Getattr(typemap, "code");

  // enumtype = compose_foreign_type(tmp);
  Delete(tmp);

  if (name) {
    String *ns = listify_namespace(current_namespace);

    Printf(f_clhead, "(swig-def-foreign-type \"%s\" %s)\n", name, enumtype);
    Delete(ns);

    // walk children.
    Node *c;
    for(c = firstChild(n); c; c=nextSibling(c)) {
      String *mangled_name = mangle_name(c, "ACL_ENUM", Getattr(c,"allegrocl:package"));
      Printf(f_clhead, "(swig-defvar \"%s\" \"%s\" :type :constant :ftype :signed-long)\n", Getattr(c, "sym:name"), mangled_name);
      Delete(mangled_name);
    }
  }
#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_enum_type: EXIT\n");
#endif

}

void emit_default_linked_type(Node *n) {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_default_linked_type: ENTER... \n");
#endif

  // catchall for non class types.
  if (!Strcmp(nodeType(n), "classforward")) {
    Printf(f_clhead, ";; forward referenced stub.\n");
    Printf(f_clhead, "(swig-def-foreign-class \"%s\" (ff:foreign-pointer) (:class ))\n\n", Getattr(n, "sym:name"));
  } else if (!Strcmp(nodeType(n), "enum")) {
    emit_enum_type(n);
  } else {
    Printf(stderr, "Don't know how to emit node type '%s' named '%s'\n", nodeType(n), Getattr(n, "name"));
  }

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_default_linked_type: EXIT\n");
#endif

}

void dump_linked_types(File *f) {
  Node *n = first_linked_type;
  int i = 0;
  while (n) {
    Printf(f, "%d: (%x) node '%s' name '%s'\n", i++, n, nodeType(n), Getattr(n, "sym:name"));

    Node *t = Getattr(n, "allegrocl:synonym-of");
    if (t)
      Printf(f, "     synonym-of %s(%x)\n", Getattr(t, "name"), t);
    n = Getattr(n, "allegrocl:next_linked_type");
  }
}

void emit_linked_types() {

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_linked_types: ENTER... ");
#endif

  Node *n = first_linked_type;

  while (n) {
    String *node_type = nodeType(n);

    // Printf(stderr,"emitting node %s(%x) of type %s.", Getattr(n,"name"),n, nodeType(n));
    if (!Strcmp(node_type, "class") || !Strcmp(node_type, "templateInst")) {
      // may need to emit a stub, so it will update the package itself.
      // Printf(stderr," Passing to emit_class.");
      emit_class(n);
    } else if (!Strcmp(nodeType(n), "cdecl")) {
      // Printf(stderr," Passing to emit_typedef.");
      update_package_if_needed(n, f_clhead);
      emit_typedef(n);
    } else {
      // Printf(stderr," Passing to default_emitter.");
      update_package_if_needed(n, f_clhead);
      emit_default_linked_type(n);
    }

    n = Getattr(n, "allegrocl:next_linked_type");
    // Printf(stderr,"returned.\n");
  }

#ifdef ALLEGROCL_WRAP_DEBUG
  Printf(stderr, "emit_linked_types: EXIT\n");
#endif
}

extern "C" Language *swig_allegrocl(void) {
  return (allegrocl = new ALLEGROCL());
}

void ALLEGROCL::main(int argc, char *argv[]) {
  int i;

  SWIG_library_directory("allegrocl");
  SWIG_config_file("allegrocl.swg");

  for (i = 1; i < argc; i++) {
    if (!strcmp(argv[i], "-identifier-converter")) {
      char *conv = argv[i + 1];

      if (!conv)
	Swig_arg_error();

      Swig_mark_arg(i);
      Swig_mark_arg(i + 1);
      i++;

      /* check for built-ins */
      if (!strcmp(conv, "lispify")) {
	identifier_converter = "identifier-convert-lispify";
      } else if (!strcmp(conv, "null")) {
	identifier_converter = "identifier-convert-null";
      } else {
	/* Must be user defined */
	char *idconv = new char[strlen(conv) + 1];
	strcpy(idconv, conv);
	identifier_converter = idconv;
      }
    } else if (!strcmp(argv[i], "-cwrap")) {
      CWrap = true;
      Swig_mark_arg(i);
    } else if (!strcmp(argv[i], "-nocwrap")) {
      CWrap = false;
      Swig_mark_arg(i);
    } else if (!strcmp(argv[i], "-isolate")) {
      unique_swig_package = true;
      Swig_mark_arg(i);
    }

    if (!strcmp(argv[i], "-help")) {
      fprintf(stdout, "Allegro CL Options (available with -allegrocl)\n");
      fprintf(stdout,
	      "    -identifier-converter <type or funcname>\n"
	      "\tSpecifies the type of conversion to do on C identifiers to convert\n"
	      "\tthem to symbols.  There are two built-in converters:  'null' and\n"
	      "\t 'lispify'.  The default is 'null'.  If you supply a name other\n"
	      "\tthan one of the built-ins, then a function by that name will be\n"
	      "\tcalled to convert identifiers to symbols.\n"
	      "\n"
	      "   -[no]cwrap\n"
	      "\tTurn on or turn off generation of an intermediate C file when\n" "\tcreating a C interface. By default this is only done for C++ code.\n");

    }

  }

  allow_overloading();
}

int ALLEGROCL::top(Node *n) {
  module_name = Getattr(n, "name");
  String *cxx_filename = Getattr(n, "outfile");
  String *cl_filename = NewString("");

  swig_package = unique_swig_package ? NewStringf("swig.%s", module_name) : NewString("swig");

  Printf(cl_filename, "%s%s.cl", SWIG_output_directory(), Swig_file_basename(Getattr(n,"infile")));

  f_cl = NewFile(cl_filename, "w");
  if (!f_cl) {
    Printf(stderr, "Unable to open %s for writing\n", cl_filename);
    SWIG_exit(EXIT_FAILURE);
  }

  Generate_Wrapper = CPlusPlus || CWrap;

  if (Generate_Wrapper) {
    f_cxx = NewFile(cxx_filename, "w");
    if (!f_cxx) {
      Close(f_cl);
      Delete(f_cl);
      Printf(stderr, "Unable to open %s for writing\n", cxx_filename);
      SWIG_exit(EXIT_FAILURE);
    }
  } else
    f_cxx = NewString("");

  f_cxx_header = f_cxx;
  f_cxx_wrapper = NewString("");

  Swig_register_filebyname("header", f_cxx_header);
  Swig_register_filebyname("wrapper", f_cxx_wrapper);
  Swig_register_filebyname("runtime", f_cxx);
  Swig_register_filebyname("lisp", f_clwrap);
  Swig_register_filebyname("lisphead", f_cl);

  Printf(f_cl, ";; This is an automatically generated file.  Make changes in\n"
	 ";; the definition file, not here.\n\n"
	 "(defpackage :%s\n"
	 "  (:use :common-lisp :ff :excl)\n"
	 "  (:export #:*swig-identifier-converter* #:*swig-module-name*\n"
	 "           #:*void* #:*swig-export-list*))\n"
	 "(in-package :%s)\n\n"
	 "(eval-when (compile load eval)\n"
	 "  (defparameter *swig-identifier-converter* '%s)\n"
	 "  (defparameter *swig-module-name* :%s))\n\n", swig_package, swig_package, identifier_converter, module_name);
  Printf(f_cl, "(defpackage :%s\n" "  (:use :commo…