rpc_tblout.c

/*
 * From: @(#)rpc_tblout.c 1.4 89/02/22
 *
 * Copyright (c) 2010, Oracle America, Inc.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above
 *       copyright notice, this list of conditions and the following
 *       disclaimer in the documentation and/or other materials
 *       provided with the distribution.
 *     * Neither the name of the "Oracle America, Inc." nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
 *   FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
 *   COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
 *   INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 *   DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
 *   GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 *   INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 *   WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 *   NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
 * rpc_tblout.c, Dispatch table outputter for the RPC protocol compiler
 */
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_util.h"
#include "proto.h"

#define TABSIZE		8
#define TABCOUNT	5
#define TABSTOP		(TABSIZE*TABCOUNT)

static const char tabstr[TABCOUNT + 1] = "\t\t\t\t\t";

static const char tbl_hdr[] = "struct rpcgen_table %s_table[] = {\n";
static const char tbl_end[] = "};\n";

static const char null_entry[] = "\n\t(char *(*)())0,\n\
 \t(xdrproc_t) xdr_void,\t\t\t0,\n\
 \t(xdrproc_t) xdr_void,\t\t\t0,\n";


static const char tbl_nproc[] = "int %s_nproc =\n\tsizeof(%s_table)/sizeof(%s_table[0]);\n\n";

static void write_table (const definition * def);
static void printit (const char *prefix, const char *type);

void
write_tables (void)
{
  list *l;
  definition *def;

  f_print (fout, "\n");
  for (l = defined; l != NULL; l = l->next)
    {
      def = (definition *) l->val;
      if (def->def_kind == DEF_PROGRAM)
	{
	  write_table (def);
	}
    }
}

static void
write_table (const definition * def)
{
  version_list *vp;
  proc_list *proc;
  int current;
  int expected;
  char progvers[100];
  int warning;

  for (vp = def->def.pr.versions; vp != NULL; vp = vp->next)
    {
      warning = 0;
      s_print (progvers, "%s_%s",
	       locase (def->def_name), vp->vers_num);
      /* print the table header */
      f_print (fout, tbl_hdr, progvers);

      if (nullproc (vp->procs))
	{
	  expected = 0;
	}
      else
	{
	  expected = 1;
	  f_print (fout, null_entry);
	}
      for (proc = vp->procs; proc != NULL; proc = proc->next)
	{
	  current = atoi (proc->proc_num);
	  if (current != expected++)
	    {
	      f_print (fout,
		       "\n/*\n * WARNING: table out of order\n */\n");
	      if (warning == 0)
		{
		  f_print (stderr,
			   "WARNING %s table is out of order\n",
			   progvers);
		  warning = 1;
		  nonfatalerrors = 1;
		}
	      expected = current + 1;
	    }
	  f_print (fout, "\n\t(char *(*)())RPCGEN_ACTION(");

	  /* routine to invoke */
	  if (Cflag && !newstyle)
	    pvname_svc (proc->proc_name, vp->vers_num);
	  else
	    {
	      if (newstyle)
		f_print (fout, "_");	/* calls internal func */
	      pvname (proc->proc_name, vp->vers_num);
	    }
	  f_print (fout, "),\n");

	  /* argument info */
	  if (proc->arg_num > 1)
	    printit ((char *) NULL, proc->args.argname);
	  else
	    /* do we have to do something special for newstyle */
	    printit (proc->args.decls->decl.prefix,
		     proc->args.decls->decl.type);
	  /* result info */
	  printit (proc->res_prefix, proc->res_type);
	}

      /* print the table trailer */
      f_print (fout, tbl_end);
      f_print (fout, tbl_nproc, progvers, progvers, progvers);
    }
}

static void
printit (const char *prefix, const char *type)
{
  int len;
  int tabs;


  len = fprintf (fout, "\txdr_%s,", stringfix (type));
  /* account for leading tab expansion */
  len += TABSIZE - 1;
  /* round up to tabs required */
  tabs = (TABSTOP - len + TABSIZE - 1) / TABSIZE;
  f_print (fout, "%s", &tabstr[TABCOUNT - tabs]);

  if (streq (type, "void"))
    {
      f_print (fout, "0");
    }
  else
    {
      f_print (fout, "sizeof ( ");
      /* XXX: should "follow" be 1 ??? */
      ptype (prefix, type, 0);
      f_print (fout, ")");
    }
  f_print (fout, ",\n");
}