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rpc_hout.c

/* @(#)rpc_hout.c 2.1 88/08/01 4.0 RPCSRC */
/*
 * Sun RPC is a product of Sun Microsystems, Inc. and is provided for
 * unrestricted use provided that this legend is included on all tape
 * media and as a part of the software program in whole or part.  Users
 * may copy or modify Sun RPC without charge, but are not authorized
 * to license or distribute it to anyone else except as part of a product or
 * program developed by the user.
 * 
 * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
 * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
 * 
 * Sun RPC is provided with no support and without any obligation on the
 * part of Sun Microsystems, Inc. to assist in its use, correction,
 * modification or enhancement.
 * 
 * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
 * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
 * OR ANY PART THEREOF.
 * 
 * In no event will Sun Microsystems, Inc. be liable for any lost revenue
 * or profits or other special, indirect and consequential damages, even if
 * Sun has been advised of the possibility of such damages.
 * 
 * Sun Microsystems, Inc.
 * 2550 Garcia Avenue
 * Mountain View, California  94043
 */
#ifndef lint
/*static char sccsid[] = "from: @(#)rpc_hout.c 1.6 87/07/28 (C) 1987 SMI";*/
static char rcsid[] = "$Id: rpc_hout.c,v 1.2 1998/05/12 03:58:45 riley Exp $";
#endif

#include <stdio.h>
#ifdef HAVE_STRINGS_H
#include <strings.h>
#else
#include <string.h>
#endif
#include <stdlib.h>

static void pconstdef(), pstructdef(), puniondef(), pdefine(), pprogramdef(),
         penumdef(), ptypedef(), pdeclaration();

static int undefined2();

extern void pprocdef(/*proc_list *, version_list **/);

/*
 * rpc_hout.c, Header file outputter for the RPC protocol compiler 
 * Copyright (C) 1987, Sun Microsystems, Inc. 
 */
#include <stdio.h>
#include <ctype.h>
#include "rpc_util.h"
#include "rpc_parse.h"


/*
 * Print the C-version of an xdr definition 
 */
void
print_datadef(def)
      definition *def;
{
      if (def->def_kind != DEF_CONST) {
            f_print(fout, "\n");
      }
      switch (def->def_kind) {
      case DEF_STRUCT:
            pstructdef(def);
            break;
      case DEF_UNION:
            puniondef(def);
            break;
      case DEF_ENUM:
            penumdef(def);
            break;
      case DEF_TYPEDEF:
            ptypedef(def);
            break;
      case DEF_PROGRAM:
            pprogramdef(def);
            break;
      case DEF_CONST:
            pconstdef(def);
            break;
      }
      if (def->def_kind != DEF_PROGRAM && def->def_kind != DEF_CONST) {
            f_print(fout, "bool_t xdr_%s (XDR *, %s *);\n", 
                  def->def_name, def->def_name);
      }
      if (def->def_kind != DEF_CONST) {
            f_print(fout, "\n");
      }
}

static void
pconstdef(def)
      definition *def;
{
      pdefine(def->def_name, def->def.co);
}

static void
pstructdef(def)
      definition *def;
{
      decl_list *l;
      char *name = def->def_name;

      f_print(fout, "struct %s {\n", name);
      for (l = def->def.st.decls; l != NULL; l = l->next) {
            pdeclaration(name, &l->decl, 1);
      }
      f_print(fout, "};\n");
      f_print(fout, "typedef struct %s %s;\n", name, name);
}

static void
puniondef(def)
      definition *def;
{
      case_list *l;
      char *name = def->def_name;
      declaration *decl;

      f_print(fout, "struct %s {\n", name);
      decl = &def->def.un.enum_decl;
      if (streq(decl->type, "bool")) {
            f_print(fout, "\tbool_t %s;\n", decl->name);
      } else {
            f_print(fout, "\t%s %s;\n", decl->type, decl->name);
      }
      f_print(fout, "\tunion {\n");
      for (l = def->def.un.cases; l != NULL; l = l->next) {
            pdeclaration(name, &l->case_decl, 2);
      }
      decl = def->def.un.default_decl;
      if (decl && !streq(decl->type, "void")) {
            pdeclaration(name, decl, 2);
      }
      f_print(fout, "\t} %s_u;\n", name);
      f_print(fout, "};\n");
      f_print(fout, "typedef struct %s %s;\n", name, name);
}



static void
pdefine(name, num)
      char *name;
      char *num;
{
      f_print(fout, "#define %s %s\n", name, num);
}

static void
puldefine(name, num)
      char *name;
      char *num;
{
      f_print(fout, "#define %s ((u_long)%s)\n", name, num);
}

static int
define_printed(stop, start)
      proc_list *stop;
      version_list *start;
{
      version_list *vers;
      proc_list *proc;

      for (vers = start; vers != NULL; vers = vers->next) {
            for (proc = vers->procs; proc != NULL; proc = proc->next) {
                  if (proc == stop) {
                        return (0);
                  } else if (streq(proc->proc_name, stop->proc_name)) {
                        return (1);
                  }
            }
      }
      abort();
      /* NOTREACHED */
}

static void
pprogramdef(def)
      definition *def;
{
      version_list *vers;
      proc_list *proc;

      puldefine(def->def_name, def->def.pr.prog_num);
      for (vers = def->def.pr.versions; vers != NULL; vers = vers->next) {
            puldefine(vers->vers_name, vers->vers_num);
            for (proc = vers->procs; proc != NULL; proc = proc->next) {
                  if (!define_printed(proc, def->def.pr.versions)) {
                        puldefine(proc->proc_name, proc->proc_num);
                  }
                  pprocdef(proc, vers);
            }
      }
}

void
pprocdef(proc, vp)
      proc_list *proc;
      version_list *vp;
{
      f_print(fout, "extern ");
      if (proc->res_prefix) {
            if (streq(proc->res_prefix, "enum")) {
                  f_print(fout, "enum ");
            } else {
                  f_print(fout, "struct ");
            }
      }
      if (streq(proc->res_type, "bool")) {
            f_print(fout, "bool_t *");
      } else if (streq(proc->res_type, "string")) {
            f_print(fout, "char **");
      } else {
            f_print(fout, "%s *", fixtype(proc->res_type));
      }
      pvname(proc->proc_name, vp->vers_num);
      f_print(fout, "();\n");
}

static void
penumdef(def)
      definition *def;
{
      char *name = def->def_name;
      enumval_list *l;
      char *last = NULL;
      int count = 0;

      f_print(fout, "enum %s {\n", name);
      for (l = def->def.en.vals; l != NULL; l = l->next) {
            f_print(fout, "\t%s", l->name);
            if (l->assignment) {
                  f_print(fout, " = %s", l->assignment);
                  last = l->assignment;
                  count = 1;
            } else {
                  if (last == NULL) {
                        f_print(fout, " = %d", count++);
                  } else {
                        f_print(fout, " = %s + %d", last, count++);
                  }
            }
            f_print(fout, ",\n");
      }
      f_print(fout, "};\n");
      f_print(fout, "typedef enum %s %s;\n", name, name);
}

static void
ptypedef(def)
      definition *def;
{
      char *name = def->def_name;
      char *old = def->def.ty.old_type;
      char prefix[8];   /* enough to contain "struct ", including NUL */
      relation rel = def->def.ty.rel;

      if (strncmp (old, "byte_", 5) == 0) {
            old += 5;
      }

      if (!streq(name, old)) {
            if (streq(old, "string")) {
                  old = "char";
                  rel = REL_POINTER;
            } else if (streq(old, "opaque")) {
                  old = "char";
            } else if (streq(old, "bool")) {
                  old = "bool_t";
            }
            if (undefined2(old, name) && def->def.ty.old_prefix) {
                  s_print(prefix, "%s ", def->def.ty.old_prefix);
            } else {
                  prefix[0] = 0;
            }
            f_print(fout, "typedef ");
            switch (rel) {
            case REL_ARRAY:
                  f_print(fout, "struct {\n");
                  f_print(fout, "\tu_int %s_len;\n", name);
                  f_print(fout, "\t%s%s *%s_val;\n", prefix, old, name);
                  f_print(fout, "} %s", name);
                  break;
            case REL_ARRAY2:
                  f_print(fout, "%s *%s\n", prefix, name);
                  break;
            case REL_POINTER:
                  f_print(fout, "%s%s *%s", prefix, old, name);
                  break;
            case REL_VECTOR:
                  f_print(fout, "%s%s %s[%s]", prefix, old, name,
                        def->def.ty.array_max);
                  break;
            case REL_ALIAS:
                  f_print(fout, "%s%s %s", prefix, old, name);
                  break;
            }
            f_print(fout, ";\n");
      }
}


static void
pdeclaration(name, dec, tab)
      char *name;
      declaration *dec;
      int tab;
{
      char buf[8];      /* enough to hold "struct ", include NUL */
      char *prefix;
      char *type;

      if (streq(dec->type, "void")) {
            return;
      }
      tabify(fout, tab);
      if (streq(dec->type, name) && !dec->prefix) {
            f_print(fout, "struct ");
      }
      if (streq(dec->type, "string")) {
            f_print(fout, "char *%s", dec->name);
      } else {
            prefix = "";
            if (streq(dec->type, "bool")) {
                  type = "bool_t";
            } else if (streq(dec->type, "opaque")) {
                  type = "char";
            } else {
                  if (dec->prefix) {
                        s_print(buf, "%s ", dec->prefix);
                        prefix = buf;
                  }
                  if (strncmp(dec->type, "byte_", 5) == 0) {
                        type = dec->type + 5;
                  }
                  else {
                        type = dec->type;
                  }
            }
            switch (dec->rel) {
            case REL_ALIAS:
                  f_print(fout, "%s%s %s", prefix, type, dec->name);
                  break;
            case REL_VECTOR:
                  f_print(fout, "%s%s %s[%s]", prefix, type, dec->name,
                        dec->array_max);
                  break;
            case REL_POINTER:
                  f_print(fout, "%s%s *%s", prefix, type, dec->name);
                  break;
            case REL_ARRAY:
                  f_print(fout, "struct {\n");
                  tabify(fout, tab);
                  f_print(fout, "\tu_int %s_len;\n", dec->name);
                  tabify(fout, tab);
                  f_print(fout, "\t%s%s *%s_val;\n", prefix, type, dec->name);
                  tabify(fout, tab);
                  f_print(fout, "} %s", dec->name);
                  break;
            case REL_ARRAY2:
                  f_print(fout, "%s%s *%s", prefix, type, dec->name);
                  break;
            }
      }
      f_print(fout, ";\n");
}



static int
undefined2(type, stop)
      char *type;
      char *stop;
{
      list *l;
      definition *def;

      for (l = defined; l != NULL; l = l->next) {
            def = (definition *) l->val;
            if (def->def_kind != DEF_PROGRAM) {
                  if (streq(def->def_name, stop)) {
                        return (1);
                  } else if (streq(def->def_name, type)) {
                        return (0);
                  }
            }
      }
      return (1);
}

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