#include "config.h"
#include "orbit-idl-c-backend.h"

#include <string.h>
#include <ctype.h>

/* ch = C header */
static void ch_output_types(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_poa(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_itypes (IDL_tree tree, OIDL_C_Info *ci);
static void ch_output_stub_protos(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_skel_protos(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static GSList *ch_build_interfaces (GSList *list, IDL_tree tree);
static void ch_output_method (FILE *of, IDL_tree tree, const char *id);
static void ch_output_imethods_index (GSList *list, OIDL_C_Info *ci);

typedef struct {
    IDL_tree tree;
    GSList  *methods; /* IDLN_OP_DCLs */
} Interface;

/* this is hardcopy from cc_build_interfaces() defined in orbit-idl-c-common.c */
static GSList *
ch_build_interfaces (GSList *list, IDL_tree tree)
{
	if (!tree)
		return list;

	switch (IDL_NODE_TYPE (tree)) {
	case IDLN_MODULE:
		list = ch_build_interfaces (
			list, IDL_MODULE (tree).definition_list);
		break;
	case IDLN_LIST: {
		IDL_tree sub;
		for (sub = tree; sub; sub = IDL_LIST (sub).next)
			list = ch_build_interfaces (
				list, IDL_LIST (sub).data);
		break;
	}
	case IDLN_ATTR_DCL: {
		IDL_tree curitem;
      
		for (curitem = IDL_ATTR_DCL (tree).simple_declarations;
		     curitem; curitem = IDL_LIST (curitem).next) {
			OIDL_Attr_Info *ai = IDL_LIST (curitem).data->data;
	
			list = ch_build_interfaces (list, ai->op1);
			if (ai->op2)
				list = ch_build_interfaces (list, ai->op2);
		}
		break;
	}
	case IDLN_INTERFACE: {
		Interface *i = g_new0 (Interface, 1);

		i->tree = tree;

		list = g_slist_append (list, i);

		list = ch_build_interfaces (list, IDL_INTERFACE(tree).body);

		break;
	}
	case IDLN_OP_DCL: {
		Interface *i;

		g_return_val_if_fail (list != NULL, NULL);

		i = ( g_slist_last(list) )->data;
		i->methods = g_slist_append (i->methods, tree);
		break;
	}
	case IDLN_EXCEPT_DCL:
		break;
	default:
		break;
	}

	return list;
}
                                                                                                   
static void
ch_output_method (FILE *of, IDL_tree tree, const char *id)
{
	char *fullname = NULL;

	fullname = g_strconcat (id, "_", IDL_IDENT (
		IDL_OP_DCL (tree).ident).str, NULL);

	fprintf (of, "\t%s__imethods_index", fullname);

	g_free (fullname);
}

static void
ch_output_imethods_index (GSList *list, OIDL_C_Info *ci)
{
	GSList *l;
	FILE *of = ci->fh;

	for (l = list; l; l = l->next) {
		Interface *i = l->data;
		char      *id;
		GSList    *m;

		id = IDL_ns_ident_to_qstring (IDL_IDENT_TO_NS (
			IDL_INTERFACE (i->tree).ident), "_", 0);

		if (i->methods) {

			fprintf (of, "#ifndef __%s__imethods_index\n", id);
			fprintf (of, "#define __%s__imethods_index\n", id);

			fprintf (of, "typedef enum {\n");

			for (m = i->methods; m; m = m->next) {
				ch_output_method (of, m->data, id);
				if (m->next)
					fprintf(of, ",\n");
				else
					fprintf(of, "\n");
			}

			fprintf (of, "} %s__imethods_index;\n", id);
			fprintf (of, "#endif /* __%s__imethods_index */\n\n", id);
		}

		g_free (id);
	}

	for (l = list; l; l = l->next) {
		g_slist_free (((Interface *)l->data)->methods);
		g_free (l->data);
	}

	g_slist_free (list);
}


void
orbit_idl_output_c_headers (IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  fprintf (ci->fh, OIDL_C_WARNING);
  fprintf(ci->fh, "#ifndef %s%s_H\n", rinfo->header_guard_prefix, ci->c_base_name);
  fprintf(ci->fh, "#define %s%s_H 1\n", rinfo->header_guard_prefix, ci->c_base_name);

  fprintf(ci->fh, "#include <glib.h>\n");
  fprintf(ci->fh, "#define ORBIT_IDL_SERIAL %d\n", ORBIT_CONFIG_SERIAL);
  fprintf(ci->fh, "#include <orbit/orbit-types.h>\n\n");

  fprintf(ci->fh, "#ifdef __cplusplus\n");
  fprintf(ci->fh, "extern \"C\" {\n");
  fprintf(ci->fh, "#endif /* __cplusplus */\n\n");

  /* Do all the typedefs, etc. */
  fprintf(ci->fh, "\n/** typedefs **/\n");
  ch_output_types(tree, rinfo, ci);
  
  if ( ci->do_skel_defs ) {
  	/* Do all the POA structures, etc. */
  	fprintf(ci->fh, "\n/** POA structures **/\n");
  	ch_output_poa(tree, rinfo, ci);

  	fprintf(ci->fh, "\n/** skel prototypes **/\n");
  	ch_output_skel_protos(tree, rinfo, ci);
  }
  fprintf(ci->fh, "\n/** stub prototypes **/\n");
  ch_output_stub_protos(tree, rinfo, ci);

  if ( ci->ext_dcls && ci->ext_dcls->str )
    fputs( ci->ext_dcls->str, ci->fh);	/* this may be huge! */

  if (rinfo->idata) {
    /* FIXME: hackish ? */
    fprintf(ci->fh, "#include <orbit/orb-core/orbit-interface.h>\n\n");

    ch_output_itypes(tree, ci);
  }

  if (rinfo->idata) {
	GSList *list = NULL;
	fprintf (ci->fh, "\n/** IMethods index */\n\n");
                                                                                                           
	list = ch_build_interfaces (list, tree);
	ch_output_imethods_index (list, ci);
  }

  fprintf(ci->fh, "#ifndef __ORBIT_IMETHODS_INDEX\n");
  fprintf(ci->fh, "#define __ORBIT_IMETHODS_INDEX\n");
  fprintf(ci->fh, "#define ORBIT_IMETHODS_INDEX(m) (m ## __imethods_index)\n");
  fprintf(ci->fh, "#endif /* __ORBIT_IMETHODS_INDEX */\n\n");

  fprintf(ci->fh, "#ifdef __cplusplus\n");
  fprintf(ci->fh, "}\n");
  fprintf(ci->fh, "#endif /* __cplusplus */\n\n");

  fprintf(ci->fh, "#ifndef EXCLUDE_ORBIT_H\n");
  fprintf(ci->fh, "#include <orbit/orbit.h>\n\n");
  fprintf(ci->fh, "#endif /* EXCLUDE_ORBIT_H */\n");

  fprintf(ci->fh, "#endif\n");

  fprintf(ci->fh, "#undef ORBIT_IDL_SERIAL\n");
}

static void
ch_output_var(IDL_tree val, IDL_tree name, OIDL_C_Info *ci)
{
  orbit_cbe_write_typespec(ci->fh, val);

  fprintf(ci->fh, " ");
  switch(IDL_NODE_TYPE(name)) {
  case IDLN_IDENT:
    fprintf(ci->fh, "%s", IDL_IDENT(name).str);
    break;
  case IDLN_TYPE_ARRAY:
    {
      IDL_tree curitem;

      fprintf(ci->fh, "%s", IDL_IDENT(IDL_TYPE_ARRAY(name).ident).str);
      for(curitem = IDL_TYPE_ARRAY(name).size_list; curitem; curitem = IDL_LIST(curitem).next) {
	fprintf(ci->fh, "[%" IDL_LL "d]", IDL_INTEGER(IDL_LIST(curitem).data).value);
      }
    }
    break;
  default:
    g_error("Weird varname - %s", IDL_tree_type_names[IDL_NODE_TYPE(name)]);
    break;
  }
  fprintf(ci->fh, ";\n");
}

static void ch_output_interface(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_type_struct(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_type_enum(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_type_dcl(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_native(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_type_union(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_codefrag(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_output_const_dcl(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_prep(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci);
static void ch_type_alloc_and_tc(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci, gboolean do_alloc);

static void
ch_output_types (IDL_tree       tree,
		 OIDL_Run_Info *rinfo,
		 OIDL_C_Info   *ci)
{
	if (!tree)
		return;

	switch (IDL_NODE_TYPE (tree)) {
	case IDLN_EXCEPT_DCL: {
		char *id;

		id = IDL_ns_ident_to_qstring (
			IDL_IDENT_TO_NS (IDL_EXCEPT_DCL (tree).ident), "_", 0);

		fprintf (ci->fh, "#undef ex_%s\n", id);
		fprintf (ci->fh, "#define ex_%s \"%s\"\n",
				id, IDL_IDENT (IDL_EXCEPT_DCL (tree).ident).repo_id);

		g_free (id);

		ch_output_type_struct (tree, rinfo, ci);
		}
		break;
	case IDLN_FORWARD_DCL:
	case IDLN_INTERFACE:
		ch_output_interface (tree, rinfo, ci);
		break;
	case IDLN_TYPE_STRUCT:
		ch_output_type_struct (tree, rinfo, ci);
		break;
	case IDLN_TYPE_ENUM:
		ch_output_type_enum (tree, rinfo, ci);
		break;
	case IDLN_TYPE_DCL:
		ch_output_type_dcl (tree, rinfo, ci);
		break;
	case IDLN_TYPE_UNION:
		ch_output_type_union (tree, rinfo, ci);
		break;
	case IDLN_CODEFRAG:
		ch_output_codefrag (tree, rinfo, ci);
		break;
	case IDLN_SRCFILE: {
		if (rinfo->onlytop) {
			char *idlfn = IDL_SRCFILE (tree).filename;

			if (!IDL_SRCFILE (tree).seenCnt &&
			    !IDL_SRCFILE(tree).isTop    &&
			    !IDL_SRCFILE(tree).wasInhibit) {
				gchar *hfn, *htail;

				hfn   = g_path_get_basename (idlfn);
				htail = strrchr (hfn,'.');

				g_assert (htail && strlen (htail) >= 2);

				htail [1] = 'h';
				htail [2] = 0;

				fprintf (ci->fh, "#include \"%s\"\n", hfn);

				g_free (hfn);
			}

		fprintf (ci->fh, "/* from IDL source file \"%s\" "
				 "(seen %d, isTop %d, wasInhibit %d) */ \n", 
					idlfn,
					IDL_SRCFILE (tree).seenCnt,
					IDL_SRCFILE (tree).isTop,
					IDL_SRCFILE (tree).wasInhibit);
		}
		}
		break;
	case IDLN_CONST_DCL:
		ch_output_const_dcl (tree, rinfo, ci);
		break;
	case IDLN_NATIVE:
		ch_output_native (tree, rinfo, ci);
		break;
	default:
		break;
	}

	switch (IDL_NODE_TYPE (tree)) {
	case IDLN_MODULE:
		ch_output_types (IDL_MODULE (tree).definition_list, rinfo, ci);
		break;
	case IDLN_LIST: {
		IDL_tree sub;

		for (sub = tree; sub; sub = IDL_LIST (sub).next) {
			ch_output_types (IDL_LIST (sub).data, rinfo, ci);
		}
		}
		break;
	case IDLN_INTERFACE:
		ch_output_types (IDL_INTERFACE (tree).body, rinfo, ci);
		break;
	default:
		break;
	}
}

static void
ch_output_interface(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
    char *fullname;
    fullname = orbit_cbe_get_typespec_str(tree);
    fprintf(ci->fh, "#if !defined(ORBIT_DECL_%s) && !defined(_%s_defined)\n#define ORBIT_DECL_%s 1\n#define _%s_defined 1\n", fullname, fullname, fullname, fullname);

    if ( tree->declspec & IDLF_DECLSPEC_PIDL ) {
        /* PIDL interfaces are not normal CORBA Objects */
    	fprintf(ci->fh, "typedef struct %s_type *%s;\n", fullname, fullname);
	fprintf(ci->fh, "#ifndef TC_%s\n", fullname);
	fprintf(ci->fh, "#  define TC_%s TC_CORBA_Object\n", fullname);
	fprintf(ci->fh, "#endif\n");
    } else {
    	fprintf(ci->fh, "#define %s__freekids CORBA_Object__freekids\n", fullname);
    	fprintf(ci->fh, "typedef CORBA_Object %s;\n", fullname);
    	fprintf(ci->fh, "extern CORBA_unsigned_long %s__classid;\n", fullname);
	ch_type_alloc_and_tc(tree, rinfo, ci, FALSE);
    }

    fprintf(ci->fh, "#endif\n");
    g_free(fullname);
}

static void
ch_output_type_enum (IDL_tree       tree,
		     OIDL_Run_Info *rinfo,
		     OIDL_C_Info   *ci)
{
	IDL_tree  l;
	char     *enumid;

	/* CORBA spec says to do
	 * typedef unsigned int enum_name;
	 * and then #defines for each enumerator.
	 * This works just as well and seems cleaner.
	 */

	enumid = IDL_ns_ident_to_qstring (
			IDL_IDENT_TO_NS (IDL_TYPE_ENUM (tree).ident), "_", 0);
	fprintf (ci->fh, "#if !defined(_%s_defined)\n#define _%s_defined 1\n", enumid, enumid);
	fprintf (ci->fh, "typedef enum {\n");

	for (l = IDL_TYPE_ENUM (tree).enumerator_list; l; l = IDL_LIST (l).next) {
		char *id;

		id = IDL_ns_ident_to_qstring (
			IDL_IDENT_TO_NS (IDL_LIST (l).data), "_", 0);

		fprintf (ci->fh, "  %s%s\n", id, IDL_LIST (l).next ? "," : "");

		g_free (id);
	}

	fprintf (ci->fh, "} %s;\n", enumid);

	ch_type_alloc_and_tc (tree, rinfo, ci, FALSE);

	fprintf (ci->fh, "#endif\n");

	g_free (enumid);
}

static void
ch_output_type_dcl(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
	IDL_tree  l;

	ch_prep (IDL_TYPE_DCL (tree).type_spec, rinfo, ci);

	for (l = IDL_TYPE_DCL (tree).dcls; l; l = IDL_LIST (l).next) {
		char *ctmp = NULL;

		IDL_tree ent = IDL_LIST (l).data;

		switch (IDL_NODE_TYPE(ent)) {
		case IDLN_IDENT:
			ctmp = IDL_ns_ident_to_qstring (
					IDL_IDENT_TO_NS (ent), "_", 0);
			break;
		case IDLN_TYPE_ARRAY:
			ctmp = IDL_ns_ident_to_qstring (
					IDL_IDENT_TO_NS (IDL_TYPE_ARRAY (ent).ident), "_", 0);
			break;
		default:
			g_assert_not_reached ();
			break;
		}

		fprintf (ci->fh, "#if !defined(_%s_defined)\n#define _%s_defined 1\n", ctmp, ctmp);
		fprintf (ci->fh, "typedef ");
		orbit_cbe_write_typespec (ci->fh, IDL_TYPE_DCL (tree).type_spec);

		switch (IDL_NODE_TYPE (ent)) {
		case IDLN_IDENT:
			fprintf (ci->fh, " %s;\n", ctmp);
			fprintf (ci->fh, "#define %s_marshal(x,y,z) ", ctmp);
			orbit_cbe_write_typespec (ci->fh, IDL_TYPE_DCL (tree).type_spec);
			fprintf (ci->fh, "_marshal((x),(y),(z))\n");

			fprintf (ci->fh, "#define %s_demarshal(x,y,z,i) ", ctmp);
			orbit_cbe_write_typespec (ci->fh, IDL_TYPE_DCL (tree).type_spec);
			fprintf (ci->fh, "_demarshal((x),(y),(z),(i))\n");
			break;
		case IDLN_TYPE_ARRAY: {
			IDL_tree sub;

			fprintf (ci->fh, " %s", ctmp);
			for (sub = IDL_TYPE_ARRAY (ent).size_list; sub; sub = IDL_LIST (sub).next)
				fprintf (ci->fh, "[%" IDL_LL "d]",
					 IDL_INTEGER (IDL_LIST (sub).data).value);

			fprintf (ci->fh, ";\n");
			fprintf (ci->fh, "typedef ");
			orbit_cbe_write_typespec (ci->fh, IDL_TYPE_DCL (tree).type_spec);
			fprintf (ci->fh, " %s_slice", ctmp);
			for (sub = IDL_LIST (IDL_TYPE_ARRAY (ent).size_list).next;
			     sub; sub = IDL_LIST (sub).next)
				fprintf (ci->fh, "[%" IDL_LL "d]", IDL_INTEGER (IDL_LIST (sub).data).value);
			fprintf(ci->fh, ";\n");
			}
			break;
		default:
			break;
		}

		ch_type_alloc_and_tc (ent, rinfo, ci, TRUE);
		fprintf (ci->fh, "#endif\n");
		g_free (ctmp);
	}
}

static void
ch_output_native(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
    char *ctmp;
    IDL_tree id = IDL_NATIVE(tree).ident;
    ctmp = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(id), "_", 0);
    fprintf(ci->fh, "#if !defined(_%s_defined)\n#define _%s_defined 1\n", ctmp, ctmp);
    fprintf(ci->fh, "typedef struct %s_type *%s;\n", ctmp, ctmp);
    /* Dont even think about emitting a typecode. */
    fprintf(ci->fh, "#endif\n");
    g_free(ctmp);
}

static void
ch_output_type_struct(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  char *id;
  IDL_tree cur, curmem;

  id = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_TYPE_STRUCT(tree).ident), 
    "_", 0);
  fprintf(ci->fh, "#if !defined(_%s_defined)\n#define _%s_defined 1\n", id, id);
  /* put typedef out first for recursive seq */
  fprintf(ci->fh, "typedef struct %s_type %s;\n", id, id);

  /* Scan for any nested decls */
  for(cur = IDL_TYPE_STRUCT(tree).member_list; cur; cur = IDL_LIST(cur).next) {
    IDL_tree ts;
    ts = IDL_MEMBER(IDL_LIST(cur).data).type_spec;
    ch_prep(ts, rinfo, ci);
  }

  fprintf(ci->fh, "struct %s_type {\n", id);

  for(cur = IDL_TYPE_STRUCT(tree).member_list; cur; cur = IDL_LIST(cur).next) {
    for(curmem = IDL_MEMBER(IDL_LIST(cur).data).dcls; curmem; curmem = IDL_LIST(curmem).next) {
      ch_output_var(IDL_MEMBER(IDL_LIST(cur).data).type_spec, IDL_LIST(curmem).data, ci);
    }
  }
  if(!IDL_TYPE_STRUCT(tree).member_list)
    fprintf(ci->fh, "int dummy;\n");
  fprintf(ci->fh, "};\n\n");

  ch_type_alloc_and_tc(tree, rinfo, ci, TRUE);

  fprintf(ci->fh, "#endif\n");

  g_free(id);
}


static void
ch_output_type_union(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  char *id;
  IDL_tree curitem;

  if (IDL_NODE_TYPE (IDL_TYPE_UNION (tree).switch_type_spec) == IDLN_TYPE_ENUM)
    ch_output_type_enum (IDL_TYPE_UNION (tree).switch_type_spec, rinfo, ci);

  id = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_TYPE_UNION(tree).ident), "_", 0);
  fprintf(ci->fh, "#if !defined(_%s_defined)\n#define _%s_defined 1\n", id, id);
  fprintf(ci->fh, "typedef struct %s_type %s;\n", id, id);

  /* Scan for any nested decls */
  for(curitem = IDL_TYPE_UNION(tree).switch_body; curitem; curitem = IDL_LIST(curitem).next) {
    IDL_tree member = IDL_CASE_STMT(IDL_LIST(curitem).data).element_spec;
    ch_prep(IDL_MEMBER(member).type_spec, rinfo, ci);
  }

  fprintf(ci->fh, "struct %s_type {\n", id);
  orbit_cbe_write_typespec(ci->fh, IDL_TYPE_UNION(tree).switch_type_spec);
  fprintf(ci->fh, " _d;\nunion {\n");

  for(curitem = IDL_TYPE_UNION(tree).switch_body; curitem; curitem = IDL_LIST(curitem).next) {
    IDL_tree member;

    member = IDL_CASE_STMT(IDL_LIST(curitem).data).element_spec;
    ch_output_var(IDL_MEMBER(member).type_spec,
		  IDL_LIST(IDL_MEMBER(member).dcls).data,
		  ci);
  }

  fprintf(ci->fh, "} _u;\n};\n");

  ch_type_alloc_and_tc(tree, rinfo, ci, TRUE);

  fprintf(ci->fh, "#endif\n");

  g_free(id);
}

static void
ch_output_codefrag(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  GSList *list;

  for(list = IDL_CODEFRAG(tree).lines; list;
      list = g_slist_next(list)) {
    if(!strncmp(list->data,
		"#pragma include_defs",
		sizeof("#pragma include_defs")-1)) {
	char *ctmp, *cte;
	ctmp = ((char *)list->data) + sizeof("#pragma include_defs");
	while(*ctmp && (isspace((int)*ctmp) || *ctmp == '"')) ctmp++;
	cte = ctmp;
	while(*cte && !isspace((int)*cte) && *cte != '"') cte++;
	*cte = '\0';
      fprintf(ci->fh, "#include <%s>\n", ctmp);
    } else
      fprintf(ci->fh, "%s\n", (char *)list->data);
  }
}

static void
ch_output_const_dcl(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
	char    *id;
	IDL_tree ident;
	IDL_tree typespec;

	ident = IDL_CONST_DCL (tree).ident;
	id = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS (ident), "_", 0);

	fprintf(ci->fh, "#ifndef %s\n", id);
	fprintf(ci->fh, "#define %s ", id);

	orbit_cbe_write_const(ci->fh,
			      IDL_CONST_DCL(tree).const_exp);

	typespec = orbit_cbe_get_typespec (IDL_CONST_DCL(tree).const_type);
	if (IDL_NODE_TYPE (typespec) == IDLN_TYPE_INTEGER &&
	    !IDL_TYPE_INTEGER (typespec).f_signed)
		fprintf(ci->fh, "U");

	fprintf(ci->fh, "\n");
	fprintf(ci->fh, "#endif /* !%s */\n\n", id);

	g_free(id);
}

static void
ch_prep_fixed(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  char *ctmp;

  ctmp = orbit_cbe_get_typespec_str(tree);
  fprintf(ci->fh,
	  "typedef struct { CORBA_unsigned_short _digits; CORBA_short _scale; CORBA_char _value[%d]; } %s;\n",
	  (int) (IDL_INTEGER(IDL_TYPE_FIXED(tree).positive_int_const).value + 2)/2,
	  ctmp);
  g_free(ctmp);

  ch_type_alloc_and_tc(tree, rinfo, ci, TRUE);
}

static void
ch_prep_sequence(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  char *ctmp, *fullname, *fullname_def, *ctmp2;
  IDL_tree tts;
  gboolean separate_defs, fake_if;
  IDL_tree fake_seq = NULL;

  tts = orbit_cbe_get_typespec(IDL_TYPE_SEQUENCE(tree).simple_type_spec);
  ctmp = orbit_cbe_get_typespec_str(IDL_TYPE_SEQUENCE(tree).simple_type_spec);
  ctmp2 = orbit_cbe_get_typespec_str(tts);
  fake_if = (IDL_NODE_TYPE(tts) == IDLN_INTERFACE);
  if(fake_if)
    {
      g_free(ctmp2);
      ctmp2 = g_strdup("CORBA_Object");
    }
  separate_defs = strcmp(ctmp, ctmp2);
  fullname = orbit_cbe_get_typespec_str(tree);

  if(separate_defs)
    {
      if(fake_if)
	tts = IDL_type_object_new();
      fake_seq = IDL_type_sequence_new(tts, NULL);
      IDL_NODE_UP(fake_seq) = IDL_NODE_UP(tree);
      ch_prep_sequence(fake_seq, rinfo, ci);
      fullname_def = g_strdup_printf("CORBA_sequence_%s", ctmp2);
      if(!fake_if)
	IDL_TYPE_SEQUENCE(fake_seq).simple_type_spec = NULL;
    }
  else
    fullname_def = g_strdup(fullname);

  if(IDL_NODE_TYPE(IDL_TYPE_SEQUENCE(tree).simple_type_spec)
     == IDLN_TYPE_SEQUENCE)
    ch_prep_sequence(IDL_TYPE_SEQUENCE(tree).simple_type_spec, rinfo, ci);

  /* NOTE: ORBIT_DECL_%s protects redef of everything (struct,TC,externs)
   * while _%s_defined protects only the struct */

  fprintf(ci->fh, "#if !defined(ORBIT_DECL_%s)\n#define ORBIT_DECL_%s 1\n",
	  fullname, fullname);
  if ( ci->do_impl_hack )
      orbit_cbe_id_define_hack(ci->fh, "ORBIT_IMPL", fullname, ci->c_base_name);

  if(separate_defs)
    {
      fprintf(ci->fh, "#if !defined(_%s_defined)\n#define _%s_defined 1\n",
	      fullname, fullname);
      if(!strcmp(ctmp, "CORBA_RepositoryId"))
	fprintf(ci->fh, "/* CRACKHEADS */\n");
      fprintf(ci->fh, "typedef %s %s;\n", fullname_def, fullname);
      fprintf(ci->fh, "#endif\n");
      ch_type_alloc_and_tc(tree, rinfo, ci, FALSE);
      fprintf(ci->fh, "#define %s__alloc %s__alloc\n",
	      fullname, fullname_def);
      fprintf(ci->fh, "#define %s__freekids %s__freekids\n",
	      fullname, fullname_def);
      fprintf(ci->fh, "#define CORBA_sequence_%s_allocbuf CORBA_sequence_%s_allocbuf\n",
	      ctmp, ctmp2);
      fprintf(ci->fh, "#define %s_marshal(x,y,z) %s_marshal((x),(y),(z))\n", fullname, fullname_def);

      fprintf(ci->fh, "#define %s_demarshal(x,y,z,i) %s_demarshal((x),(y),(z),(i))\n", fullname, fullname_def);
      IDL_tree_free(fake_seq);
    }
  else
    {
      char *tc, *member_type;

      fprintf(ci->fh, "#if !defined(_%s_defined)\n#define _%s_defined 1\n",
	      fullname, fullname);
      fprintf(ci->fh, "typedef struct { CORBA_unsigned_long _maximum, _length; ");
      orbit_cbe_write_typespec(ci->fh, IDL_TYPE_SEQUENCE(tree).simple_type_spec);
      fprintf(ci->fh, "* _buffer; CORBA_boolean _release; } ");
      orbit_cbe_write_typespec(ci->fh, tree);
      fprintf(ci->fh, ";\n#endif\n");
      ch_type_alloc_and_tc(tree, rinfo, ci, TRUE);

      tc = orbit_cbe_get_typecode_name (orbit_cbe_get_typespec (tree));
      member_type = orbit_cbe_type_is_builtin (IDL_TYPE_SEQUENCE (tree).simple_type_spec) ?
				ctmp + strlen ("CORBA_") : ctmp;

      fprintf (ci->fh, "#define CORBA_sequence_%s_allocbuf(l) "
		       "((%s*)ORBit_small_allocbuf (%s, (l)))\n",
		       member_type, member_type, tc);

      g_free (tc);
    }

  fprintf(ci->fh, "#endif\n");

  g_free(ctmp2);
  g_free(ctmp);
  g_free(fullname);
  g_free(fullname_def);
}

static
void ch_prep (IDL_tree       tree,
	      OIDL_Run_Info *rinfo,
	      OIDL_C_Info   *ci)
{
	switch (IDL_NODE_TYPE (tree)) {
	case IDLN_TYPE_SEQUENCE:
		ch_prep_sequence (tree, rinfo, ci);
		break;
	case IDLN_TYPE_FIXED:
		ch_prep_fixed (tree, rinfo, ci);
		break;
	case IDLN_TYPE_STRUCT:
		ch_output_type_struct (tree, rinfo, ci);
		break;
	case IDLN_TYPE_ENUM:
		ch_output_type_enum (tree, rinfo, ci);
		break;
	default:
		break;
	}
}

static void
ch_type_alloc_and_tc(IDL_tree tree, OIDL_Run_Info *rinfo,
		     OIDL_C_Info *ci, gboolean do_alloc)
{
  char *ctmp;
  IDL_tree tts;

  ctmp = orbit_cbe_get_typespec_str(tree);

  if ( ci->do_impl_hack ) {
      fprintf(ci->fh, "#if !defined(TC_IMPL_TC_%s_0)\n", ctmp);
      orbit_cbe_id_define_hack(ci->fh, "TC_IMPL_TC", ctmp, ci->c_base_name);
  }

  fprintf (ci->fh, "#ifdef ORBIT_IDL_C_IMODULE_%s\n", ci->c_base_name);
  fprintf (ci->fh, "static\n");
  fprintf (ci->fh, "#else\n");
  fprintf (ci->fh, "extern\n");
  fprintf (ci->fh, "#endif\n");
  fprintf (ci->fh, "ORBIT2_MAYBE_CONST struct CORBA_TypeCode_struct TC_%s_struct;\n", ctmp);

  fprintf (ci->fh, "#define TC_%s ((CORBA_TypeCode)&TC_%s_struct)\n", ctmp, ctmp);
  if (ci->do_impl_hack)
      fprintf (ci->fh, "#endif\n");

  if(do_alloc) {
      char *tc;

      tts = orbit_cbe_get_typespec(tree);

      tc = orbit_cbe_get_typecode_name (tts);

      fprintf (ci->fh, "#define %s__alloc() ((%s%s *)ORBit_small_alloc (%s))\n",
		   ctmp, ctmp, (IDL_NODE_TYPE(tree) == IDLN_TYPE_ARRAY)?"_slice":"", tc);

      fprintf (ci->fh, "#define %s__freekids(m,d) ORBit_small_freekids (%s,(m),(d))\n", ctmp, tc);

      if ( IDL_NODE_TYPE(tts) == IDLN_TYPE_SEQUENCE )
      {
	char *member_type = orbit_cbe_get_typespec_str(IDL_TYPE_SEQUENCE(tts).simple_type_spec);
	char *member_name = orbit_cbe_type_is_builtin (IDL_TYPE_SEQUENCE (tts).simple_type_spec) ?
	  member_type + strlen ("CORBA_") : member_type;
	
	fprintf (ci->fh, "#define %s_allocbuf(l) "
		 "((%s*)ORBit_small_allocbuf (%s, (l)))\n",
		 ctmp, member_name, tc);
	
	g_free (member_type);
      }
	
      g_free (tc);
  }

  g_free(ctmp);
}

/************************/
static void
cbe_header_interface_print_vepv(IDL_tree node, FILE *of)
{
  char *id = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_INTERFACE(node).ident),
				     "_", 0);
  fprintf(of, "  POA_%s__epv *%s_epv;\n", id, id);
  g_free(id);

}

static void
ch_output_poa(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  if(!tree) return;

  if ( tree->declspec & IDLF_DECLSPEC_PIDL )
	return;

  switch(IDL_NODE_TYPE(tree)) {
  case IDLN_MODULE:
    ch_output_poa(IDL_MODULE(tree).definition_list, rinfo, ci);
    break;
  case IDLN_LIST:
    {
      IDL_tree sub;

      for(sub = tree; sub; sub = IDL_LIST(sub).next) {
	ch_output_poa(IDL_LIST(sub).data, rinfo, ci);
      }
    }
    break;
  case IDLN_INTERFACE:
    {
      IDL_tree sub;
      char *id;


      id = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_INTERFACE(tree).ident), "_", 0);

      fprintf(ci->fh, "#ifndef _defined_POA_%s\n#define _defined_POA_%s 1\n", 
        id, id);

      /* First, do epv for this interface, then vepv, then servant */
      fprintf(ci->fh, "typedef struct {\n");
      fprintf(ci->fh, "  void *_private;\n");
      for(sub = IDL_INTERFACE(tree).body; sub; sub = IDL_LIST(sub).next) {
	IDL_tree cur;

	cur = IDL_LIST(sub).data;

	switch(IDL_NODE_TYPE(cur)) {
	case IDLN_OP_DCL:
	  orbit_cbe_op_write_proto(ci->fh, cur, "", TRUE);
	  fprintf(ci->fh, ";\n");
	  break;
	case IDLN_ATTR_DCL:
	  {
	    OIDL_Attr_Info *ai;
	    IDL_tree curitem;

	    for(curitem = IDL_ATTR_DCL(cur).simple_declarations; curitem; curitem = IDL_LIST(curitem).next) {
	      ai = IDL_LIST(curitem).data->data;
	      
	      orbit_cbe_op_write_proto(ci->fh, ai->op1, "", TRUE);
	      fprintf(ci->fh, ";\n");
	      
	      if(ai->op2) {
		orbit_cbe_op_write_proto(ci->fh, ai->op2, "", TRUE);
		fprintf(ci->fh, ";\n");
	      }
	    }
	  }
	  break;
	default:
	  break;
	}
      }

      fprintf(ci->fh, "} POA_%s__epv;\n", id);

      fprintf(ci->fh, "typedef struct {\n");
      fprintf(ci->fh, "  PortableServer_ServantBase__epv *_base_epv;\n");
      IDL_tree_traverse_parents(tree, (GFunc)cbe_header_interface_print_vepv, ci->fh);
      fprintf(ci->fh, "} POA_%s__vepv;\n", id);

      fprintf(ci->fh, "typedef struct {\n");
      fprintf(ci->fh, "  void *_private;\n");
      fprintf(ci->fh, "  POA_%s__vepv *vepv;\n", id);
      fprintf(ci->fh, "} POA_%s;\n", id);

      fprintf(ci->fh,
	      "extern void POA_%s__init(PortableServer_Servant servant, CORBA_Environment *ev);\n", id);
      fprintf(ci->fh,
	      "extern void POA_%s__fini(PortableServer_Servant servant, CORBA_Environment *ev);\n", id);

      fprintf(ci->fh, "#endif /* _defined_POA_%s */\n", id);

      g_free(id);
    }
    break;
  default:
    break;
  }
}

/************************/
typedef struct {
  FILE *of;
  IDL_tree realif;
} InheritedOutputInfo;
static void ch_output_inherited_protos(IDL_tree curif, InheritedOutputInfo *ioi);

static void
ch_output_stub_protos(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  if(!tree) return;


  switch(IDL_NODE_TYPE(tree)) {
  case IDLN_MODULE:
    ch_output_stub_protos(IDL_MODULE(tree).definition_list, rinfo, ci);
    break;
  case IDLN_LIST:
    {
      IDL_tree sub;

      for(sub = tree; sub; sub = IDL_LIST(sub).next) {
	ch_output_stub_protos(IDL_LIST(sub).data, rinfo, ci);
      }
    }
    break;
  case IDLN_INTERFACE:
    {
      IDL_tree sub;

      if(IDL_INTERFACE(tree).inheritance_spec) {
	InheritedOutputInfo ioi;
	ioi.of = ci->fh;
	ioi.realif = tree;
	IDL_tree_traverse_parents(IDL_INTERFACE(tree).inheritance_spec, (GFunc)ch_output_inherited_protos, &ioi);
      }

      for(sub = IDL_INTERFACE(tree).body; sub; sub = IDL_LIST(sub).next) {
	IDL_tree cur;

	cur = IDL_LIST(sub).data;

	switch(IDL_NODE_TYPE(cur)) {
	case IDLN_OP_DCL:
	  orbit_idl_check_oneway_op (cur);
	  orbit_cbe_op_write_proto(ci->fh, cur, "", FALSE);
	  fprintf(ci->fh, ";\n");
	  break;
	case IDLN_ATTR_DCL:
	  {
	    OIDL_Attr_Info *ai;
	    IDL_tree curitem;

	    for(curitem = IDL_ATTR_DCL(cur).simple_declarations; curitem; curitem = IDL_LIST(curitem).next) {
	      ai = IDL_LIST(curitem).data->data;
	      
	      orbit_cbe_op_write_proto(ci->fh, ai->op1, "", FALSE);
	      fprintf(ci->fh, ";\n");
	      
	      if(ai->op2) {
		orbit_cbe_op_write_proto(ci->fh, ai->op2, "", FALSE);
		fprintf(ci->fh, ";\n");
	      }
	    }
	  }
	  break;
	default:
	  break;
	}
      }
    }
    break;
  default:
    break;
  }
}

static void
ch_output_inherited_protos(IDL_tree curif, InheritedOutputInfo *ioi)
{
  char *id, *realid;
  IDL_tree curitem;

  if(curif == ioi->realif)
    return;

  realid = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_INTERFACE(ioi->realif).ident), "_", 0);
  id = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_INTERFACE(curif).ident), "_", 0);

  for(curitem = IDL_INTERFACE(curif).body; curitem; curitem = IDL_LIST(curitem).next) {
    IDL_tree curop = IDL_LIST(curitem).data;

    switch(IDL_NODE_TYPE(curop)) {
    case IDLN_OP_DCL:
      fprintf(ioi->of, "#define %s_%s %s_%s\n",
	      realid, IDL_IDENT(IDL_OP_DCL(curop).ident).str,
	      id, IDL_IDENT(IDL_OP_DCL(curop).ident).str);
      break;
    case IDLN_ATTR_DCL:
      {
	IDL_tree curitem;

	/* We don't use OIDL_Attr_Info here because inherited ops may go back into trees that are output-inhibited
	   and therefore don't have the OIDL_Attr_Info generated on them */

	for(curitem = IDL_ATTR_DCL(curop).simple_declarations; curitem; curitem = IDL_LIST(curitem).next) {
	  IDL_tree ident;

	  ident = IDL_LIST(curitem).data;
	  
	  fprintf(ioi->of, "#define %s__get_%s %s__get_%s\n",
		  realid, IDL_IDENT(ident).str,
		  id, IDL_IDENT(ident).str);

	  if(!IDL_ATTR_DCL(curop).f_readonly)
	    fprintf(ioi->of, "#define %s__set_%s %s__set_%s\n",
		    realid, IDL_IDENT(ident).str,
		    id, IDL_IDENT(ident).str);
	}
      }
      break;
	default:
	  break;
    }
  }

  g_free(id);
  g_free(realid);
}

static void
doskel(IDL_tree cur, OIDL_Run_Info *rinfo, char *ifid, OIDL_C_Info *ci)
{
  char *id;

  id = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_OP_DCL(cur).ident), "_", 0);

  fprintf(ci->fh, "void _ORBIT_skel_small_%s("
	    "POA_%s *_ORBIT_servant, "
	    "gpointer _ORBIT_retval, "
	    "gpointer *_ORBIT_args, "
	    "CORBA_Context ctx,"
	    "CORBA_Environment *ev, ", id, ifid);
  orbit_cbe_op_write_proto(ci->fh, cur, "_impl_", TRUE);
  fprintf(ci->fh, ");\n");

  g_free(id);
}

static void
ch_output_skel_protos(IDL_tree tree, OIDL_Run_Info *rinfo, OIDL_C_Info *ci)
{
  if(!tree) return;

  if ( tree->declspec & IDLF_DECLSPEC_PIDL )
	return;

  switch(IDL_NODE_TYPE(tree)) {
  case IDLN_MODULE:
    ch_output_skel_protos(IDL_MODULE(tree).definition_list, rinfo, ci);
    break;
  case IDLN_LIST:
    {
      IDL_tree sub;

      for(sub = tree; sub; sub = IDL_LIST(sub).next) {
	ch_output_skel_protos(IDL_LIST(sub).data, rinfo, ci);
      }
    }
    break;
  case IDLN_INTERFACE:
    {
      IDL_tree sub;
      char *ifid;

      ifid = IDL_ns_ident_to_qstring(IDL_IDENT_TO_NS(IDL_INTERFACE(tree).ident), "_", 0);

      for(sub = IDL_INTERFACE(tree).body; sub; sub = IDL_LIST(sub).next) {
	IDL_tree cur;

	cur = IDL_LIST(sub).data;

	switch(IDL_NODE_TYPE(cur)) {
	case IDLN_OP_DCL:
	  doskel(cur, rinfo, ifid, ci);
	  break;
	case IDLN_ATTR_DCL:
	  {
	    OIDL_Attr_Info *ai = cur->data;
	    IDL_tree curitem;

	    for(curitem = IDL_ATTR_DCL(cur).simple_declarations; curitem; curitem = IDL_LIST(curitem).next) {
	      ai = IDL_LIST(curitem).data->data;
	      
	      doskel(ai->op1, rinfo, ifid, ci);
	      if(ai->op2)
		doskel(ai->op2, rinfo, ifid, ci);
	    }
	  }
	  break;
	default:
	  break;
	}
      }
      g_free(ifid);
    }
    break;
  default:
    break;
  }
}

static void
ch_output_itypes (IDL_tree tree, OIDL_C_Info *ci)
{
	static int num_methods = 0;

	if (!tree)
		return;

	switch(IDL_NODE_TYPE(tree)) {
	case IDLN_MODULE:
		ch_output_itypes (IDL_MODULE(tree).definition_list, ci);
		break;
	case IDLN_LIST: {
		IDL_tree sub;
		for (sub = tree; sub; sub = IDL_LIST(sub).next)
			ch_output_itypes (IDL_LIST(sub).data, ci);
	}
	break;
	case IDLN_ATTR_DCL: {
		OIDL_Attr_Info *ai = tree->data;

		IDL_tree curitem;
      
		for(curitem = IDL_ATTR_DCL(tree).simple_declarations; curitem;
		    curitem = IDL_LIST(curitem).next) {
			ai = IDL_LIST(curitem).data->data;
	
			ch_output_itypes (ai->op1, ci);
			if(ai->op2)
				ch_output_itypes (ai->op2, ci);
		}
	}
	break;

	case IDLN_INTERFACE: {
		char  *id;

		id = IDL_ns_ident_to_qstring (IDL_IDENT_TO_NS (
			IDL_INTERFACE (tree).ident), "_", 0);

		ch_output_itypes (IDL_INTERFACE(tree).body, ci);
      
		fprintf (ci->fh, "#ifdef ORBIT_IDL_C_IMODULE_%s\n",
			 ci->c_base_name);
		fprintf (ci->fh, "static \n");
		fprintf (ci->fh, "#else\n");
		fprintf (ci->fh, "extern \n");
		fprintf (ci->fh, "#endif\n");
		fprintf (ci->fh, "ORBit_IInterface %s__iinterface;\n", id);

		fprintf (ci->fh, "#define %s_IMETHODS_LEN %d\n", id, num_methods);

		if (num_methods == 0)
			fprintf (ci->fh, "#define %s__imethods (ORBit_IMethod*) NULL\n", id);
		else {
			fprintf (ci->fh, "#ifdef ORBIT_IDL_C_IMODULE_%s\n",
				 ci->c_base_name);
			fprintf (ci->fh, "static \n");
			fprintf (ci->fh, "#else\n");
			fprintf (ci->fh, "extern \n");
			fprintf (ci->fh, "#endif\n");
			fprintf (ci->fh, "ORBit_IMethod %s__imethods[%s_IMETHODS_LEN];\n", id, id);
		}


		num_methods = 0;

		break;
	}

	case IDLN_OP_DCL:
		num_methods++;
		break;
	default:
		break;
	}
}