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813 lines
18 KiB
C
813 lines
18 KiB
C
/*
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* From: @(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* * Neither the name of Sun Microsystems, Inc. nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
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* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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/*
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* rpc_cout.c, XDR routine outputter for the RPC protocol compiler
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include <string.h>
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#include "rpc_parse.h"
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#include "rpc_util.h"
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#include "proto.h"
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static void emit_enum (definition * def);
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static void emit_program (const definition * def);
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static void emit_union (const definition * def);
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static void emit_struct (definition * def);
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static void emit_typedef (const definition * def);
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static void emit_inline (int indent, declaration * decl, int flag);
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static void emit_single_in_line (int indent, declaration *decl, int flag,
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relation rel);
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static int findtype (const definition * def, const char *type);
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static int undefined (const char *type);
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static void print_generic_header (const char *procname, int pointerp);
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static void print_ifopen (int indent, const char *name);
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static void print_ifarg (const char *arg);
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static void print_ifsizeof (int indent, const char *prefix, const char *type);
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static void print_ifclose (int indent);
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static void print_ifstat (int indent, const char *prefix, const char *type,
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relation rel, const char *amax,
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const char *objname, const char *name);
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static void print_stat (int indent, const declaration * dec);
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static void print_header (const definition * def);
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static void print_trailer (void);
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static char *upcase (const char *str);
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/*
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* Emit the C-routine for the given definition
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*/
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void
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emit (definition * def)
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{
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if (def->def_kind == DEF_CONST)
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{
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return;
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}
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if (def->def_kind == DEF_PROGRAM)
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{
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emit_program (def);
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return;
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}
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if (def->def_kind == DEF_TYPEDEF)
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{
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/* now we need to handle declarations like
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struct typedef foo foo;
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since we don't want this to be expanded
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into 2 calls to xdr_foo */
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if (strcmp (def->def.ty.old_type, def->def_name) == 0)
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return;
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};
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print_header (def);
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switch (def->def_kind)
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{
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case DEF_UNION:
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emit_union (def);
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break;
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case DEF_ENUM:
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emit_enum (def);
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break;
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case DEF_STRUCT:
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emit_struct (def);
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break;
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case DEF_TYPEDEF:
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emit_typedef (def);
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break;
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default:
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/* can't happen */
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break;
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}
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print_trailer ();
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}
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static int
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findtype (const definition * def, const char *type)
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{
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if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST)
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{
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return 0;
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}
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else
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{
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return (streq (def->def_name, type));
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}
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}
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static int
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undefined (const char *type)
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{
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definition *def;
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def = (definition *) FINDVAL (defined, type, findtype);
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return (def == NULL);
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}
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static void
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print_generic_header (const char *procname, int pointerp)
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{
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f_print (fout, "\n");
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f_print (fout, "bool_t\n");
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if (Cflag)
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{
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f_print (fout, "xdr_%s (", procname);
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f_print (fout, "XDR *xdrs, ");
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f_print (fout, "%s ", procname);
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if (pointerp)
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f_print (fout, "*");
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f_print (fout, "objp)\n{\n");
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}
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else
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{
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f_print (fout, "xdr_%s (xdrs, objp)\n", procname);
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f_print (fout, "\tXDR *xdrs;\n");
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f_print (fout, "\t%s ", procname);
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if (pointerp)
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f_print (fout, "*");
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f_print (fout, "objp;\n{\n");
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}
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}
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static void
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print_header (const definition * def)
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{
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print_generic_header (def->def_name,
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def->def_kind != DEF_TYPEDEF ||
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!isvectordef (def->def.ty.old_type,
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def->def.ty.rel));
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/* Now add Inline support */
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if (inlineflag == 0)
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return;
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/*May cause lint to complain. but ... */
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f_print (fout, "\tregister int32_t *buf;\n\n");
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}
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static void
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print_prog_header (const proc_list * plist)
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{
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print_generic_header (plist->args.argname, 1);
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}
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static void
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print_trailer (void)
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{
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f_print (fout, "\treturn TRUE;\n");
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f_print (fout, "}\n");
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}
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static void
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print_ifopen (int indent, const char *name)
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{
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tabify (fout, indent);
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f_print (fout, " if (!xdr_%s (xdrs", name);
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}
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static void
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print_ifarg (const char *arg)
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{
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f_print (fout, ", %s", arg);
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}
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static void
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print_ifsizeof (int indent, const char *prefix, const char *type)
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{
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if (indent)
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{
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fprintf (fout, ",\n");
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tabify (fout, indent);
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}
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else
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fprintf (fout, ", ");
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if (streq (type, "bool"))
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fprintf (fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
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else
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{
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fprintf (fout, "sizeof (");
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if (undefined (type) && prefix)
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{
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f_print (fout, "%s ", prefix);
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}
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fprintf (fout, "%s), (xdrproc_t) xdr_%s", type, type);
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}
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}
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static void
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print_ifclose (int indent)
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{
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f_print (fout, "))\n");
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tabify (fout, indent);
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f_print (fout, "\t return FALSE;\n");
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}
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static void
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print_ifstat (int indent, const char *prefix, const char *type, relation rel,
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const char *amax, const char *objname, const char *name)
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{
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const char *alt = NULL;
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switch (rel)
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{
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case REL_POINTER:
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print_ifopen (indent, "pointer");
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print_ifarg ("(char **)");
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f_print (fout, "%s", objname);
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print_ifsizeof (0, prefix, type);
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break;
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case REL_VECTOR:
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if (streq (type, "string"))
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{
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alt = "string";
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}
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else if (streq (type, "opaque"))
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{
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alt = "opaque";
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}
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if (alt)
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{
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print_ifopen (indent, alt);
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print_ifarg (objname);
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}
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else
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{
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print_ifopen (indent, "vector");
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print_ifarg ("(char *)");
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f_print (fout, "%s", objname);
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}
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print_ifarg (amax);
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if (!alt)
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{
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print_ifsizeof (indent + 1, prefix, type);
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}
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break;
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case REL_ARRAY:
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if (streq (type, "string"))
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{
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alt = "string";
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}
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else if (streq (type, "opaque"))
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{
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alt = "bytes";
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}
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if (streq (type, "string"))
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{
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print_ifopen (indent, alt);
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print_ifarg (objname);
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}
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else
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{
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if (alt)
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{
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print_ifopen (indent, alt);
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}
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else
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{
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print_ifopen (indent, "array");
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}
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print_ifarg ("(char **)");
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if (*objname == '&')
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{
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f_print (fout, "%s.%s_val, (u_int *) %s.%s_len",
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objname, name, objname, name);
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}
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else
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{
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f_print (fout, "&%s->%s_val, (u_int *) &%s->%s_len",
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objname, name, objname, name);
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}
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}
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print_ifarg (amax);
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if (!alt)
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{
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print_ifsizeof (indent + 1, prefix, type);
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}
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break;
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case REL_ALIAS:
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print_ifopen (indent, type);
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print_ifarg (objname);
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break;
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}
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print_ifclose (indent);
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}
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static void
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emit_enum (definition * def)
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{
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(void) def;
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print_ifopen (1, "enum");
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print_ifarg ("(enum_t *) objp");
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print_ifclose (1);
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}
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static void
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emit_program (const definition * def)
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{
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decl_list *dl;
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version_list *vlist;
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proc_list *plist;
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for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
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for (plist = vlist->procs; plist != NULL; plist = plist->next)
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{
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if (!newstyle || plist->arg_num < 2)
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continue; /* old style, or single argument */
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print_prog_header (plist);
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for (dl = plist->args.decls; dl != NULL;
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dl = dl->next)
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print_stat (1, &dl->decl);
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print_trailer ();
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}
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}
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static void
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emit_union (const definition * def)
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{
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declaration *dflt;
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case_list *cl;
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declaration *cs;
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char *object;
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const char *vecformat = "objp->%s_u.%s";
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const char *format = "&objp->%s_u.%s";
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print_stat (1, &def->def.un.enum_decl);
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f_print (fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
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for (cl = def->def.un.cases; cl != NULL; cl = cl->next)
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{
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f_print (fout, "\tcase %s:\n", cl->case_name);
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if (cl->contflag == 1) /* a continued case statement */
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continue;
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cs = &cl->case_decl;
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if (!streq (cs->type, "void"))
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{
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object = alloc (strlen (def->def_name) + strlen (format) +
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strlen (cs->name) + 1);
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if (isvectordef (cs->type, cs->rel))
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{
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s_print (object, vecformat, def->def_name,
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cs->name);
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}
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else
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{
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s_print (object, format, def->def_name,
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cs->name);
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}
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print_ifstat (2, cs->prefix, cs->type, cs->rel, cs->array_max,
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object, cs->name);
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free (object);
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}
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f_print (fout, "\t\tbreak;\n");
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}
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dflt = def->def.un.default_decl;
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if (dflt != NULL)
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{
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if (!streq (dflt->type, "void"))
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{
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f_print (fout, "\tdefault:\n");
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object = alloc (strlen (def->def_name) + strlen (format) +
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strlen (dflt->name) + 1);
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if (isvectordef (dflt->type, dflt->rel))
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{
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s_print (object, vecformat, def->def_name,
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dflt->name);
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}
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else
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{
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s_print (object, format, def->def_name,
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dflt->name);
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}
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print_ifstat (2, dflt->prefix, dflt->type, dflt->rel,
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dflt->array_max, object, dflt->name);
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free (object);
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f_print (fout, "\t\tbreak;\n");
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}
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#ifdef __GNU_LIBRARY__
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else
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{
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f_print (fout, "\tdefault:\n");
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f_print (fout, "\t\tbreak;\n");
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}
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#endif
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}
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else
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{
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f_print (fout, "\tdefault:\n");
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f_print (fout, "\t\treturn FALSE;\n");
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}
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f_print (fout, "\t}\n");
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}
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static void
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inline_struct (definition *def, int flag)
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{
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decl_list *dl;
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int i, size;
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decl_list *cur = NULL;
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decl_list *psav;
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bas_type *ptr;
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char *sizestr;
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const char *plus;
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char ptemp[256];
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int indent = 1;
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if (flag == PUT)
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f_print (fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
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else
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f_print (fout,
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"\t\treturn TRUE;\n\t} else if (xdrs->x_op == XDR_DECODE) {\n");
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i = 0;
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size = 0;
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sizestr = NULL;
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for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
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{ /* xxx */
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/* now walk down the list and check for basic types */
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if ((dl->decl.prefix == NULL) &&
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((ptr = find_type (dl->decl.type)) != NULL) &&
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((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
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{
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if (i == 0)
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cur = dl;
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++i;
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if (dl->decl.rel == REL_ALIAS)
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size += ptr->length;
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else
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{
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/* this is required to handle arrays */
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if (sizestr == NULL)
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plus = "";
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else
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plus = "+ ";
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if (ptr->length != 1)
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s_print (ptemp, " %s %s * %d", plus, dl->decl.array_max,
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ptr->length);
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else
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s_print (ptemp, " %s%s ", plus, dl->decl.array_max);
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|
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/*now concatenate to sizestr !!!! */
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if (sizestr == NULL)
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sizestr = strdup (ptemp);
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else
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{
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sizestr = realloc (sizestr, strlen (sizestr) +
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strlen (ptemp) + 1);
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if (sizestr == NULL)
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{
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f_print (stderr, "Fatal error : no memory \n");
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crash ();
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};
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sizestr = strcat (sizestr, ptemp);
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/*build up length of array */
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}
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}
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}
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else
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{
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if (i > 0)
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{
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if (sizestr == NULL && size < inlineflag)
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{
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/* don't expand into inline code if size < inlineflag */
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while (cur != dl)
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{
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print_stat (indent + 1, &cur->decl);
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cur = cur->next;
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}
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}
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else
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{
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/* were already looking at a xdr_inlineable structure */
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tabify (fout, indent + 1);
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if (sizestr == NULL)
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f_print (fout, "buf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);", size);
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else if (size == 0)
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f_print (fout,
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"buf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
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sizestr);
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else
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f_print (fout,
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"buf = XDR_INLINE (xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
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size, sizestr);
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f_print (fout, "\n");
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tabify (fout, indent + 1);
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fprintf (fout, "if (buf == NULL) {\n");
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psav = cur;
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while (cur != dl)
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{
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print_stat (indent + 2, &cur->decl);
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cur = cur->next;
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}
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f_print (fout, "\n\t\t} else {\n");
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cur = psav;
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while (cur != dl)
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{
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emit_inline (indent + 1, &cur->decl, flag);
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cur = cur->next;
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}
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tabify (fout, indent + 1);
|
|
f_print (fout, "}\n");
|
|
}
|
|
}
|
|
size = 0;
|
|
i = 0;
|
|
free (sizestr);
|
|
sizestr = NULL;
|
|
print_stat (indent + 1, &dl->decl);
|
|
}
|
|
}
|
|
if (i > 0)
|
|
{
|
|
if (sizestr == NULL && size < inlineflag)
|
|
{
|
|
/* don't expand into inline code if size < inlineflag */
|
|
while (cur != dl)
|
|
{
|
|
print_stat (indent + 1, &cur->decl);
|
|
cur = cur->next;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
/* were already looking at a xdr_inlineable structure */
|
|
if (sizestr == NULL)
|
|
f_print (fout,
|
|
"\t\tbuf = XDR_INLINE (xdrs, %d * BYTES_PER_XDR_UNIT);",
|
|
size);
|
|
else if (size == 0)
|
|
f_print (fout,
|
|
"\t\tbuf = XDR_INLINE (xdrs, (%s) * BYTES_PER_XDR_UNIT);",
|
|
sizestr);
|
|
else
|
|
f_print (fout,
|
|
"\t\tbuf = XDR_INLINE (xdrs, (%d + %s)* BYTES_PER_XDR_UNIT);",
|
|
size, sizestr);
|
|
f_print (fout, "\n\t\tif (buf == NULL) {\n");
|
|
psav = cur;
|
|
while (cur != NULL)
|
|
{
|
|
print_stat (indent + 2, &cur->decl);
|
|
cur = cur->next;
|
|
}
|
|
f_print (fout, "\t\t} else {\n");
|
|
|
|
cur = psav;
|
|
while (cur != dl)
|
|
{
|
|
emit_inline (indent + 2, &cur->decl, flag);
|
|
cur = cur->next;
|
|
}
|
|
f_print (fout, "\t\t}\n");
|
|
}
|
|
}
|
|
}
|
|
|
|
/* this may be const. i haven't traced this one through yet. */
|
|
|
|
static void
|
|
emit_struct (definition * def)
|
|
{
|
|
decl_list *dl;
|
|
int j, size, flag;
|
|
bas_type *ptr;
|
|
int can_inline;
|
|
|
|
|
|
if (inlineflag == 0)
|
|
{
|
|
/* No xdr_inlining at all */
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
print_stat (1, &dl->decl);
|
|
return;
|
|
}
|
|
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
if (dl->decl.rel == REL_VECTOR)
|
|
{
|
|
f_print (fout, "\tint i;\n");
|
|
break;
|
|
}
|
|
|
|
size = 0;
|
|
can_inline = 0;
|
|
/*
|
|
* Make a first pass and see if inling is possible.
|
|
*/
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
if ((dl->decl.prefix == NULL) &&
|
|
((ptr = find_type (dl->decl.type)) != NULL) &&
|
|
((dl->decl.rel == REL_ALIAS) || (dl->decl.rel == REL_VECTOR)))
|
|
{
|
|
if (dl->decl.rel == REL_ALIAS)
|
|
size += ptr->length;
|
|
else
|
|
{
|
|
can_inline = 1;
|
|
break; /* can be inlined */
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (size >= inlineflag)
|
|
{
|
|
can_inline = 1;
|
|
break; /* can be inlined */
|
|
}
|
|
size = 0;
|
|
}
|
|
if (size > inlineflag)
|
|
can_inline = 1;
|
|
|
|
if (can_inline == 0)
|
|
{ /* can not inline, drop back to old mode */
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
print_stat (1, &dl->decl);
|
|
return;
|
|
};
|
|
|
|
flag = PUT;
|
|
for (j = 0; j < 2; j++)
|
|
{
|
|
inline_struct (def, flag);
|
|
if (flag == PUT)
|
|
flag = GET;
|
|
}
|
|
|
|
f_print (fout, "\t return TRUE;\n\t}\n\n");
|
|
|
|
/* now take care of XDR_FREE case */
|
|
|
|
for (dl = def->def.st.decls; dl != NULL; dl = dl->next)
|
|
print_stat (1, &dl->decl);
|
|
}
|
|
|
|
static void
|
|
emit_typedef (const definition * def)
|
|
{
|
|
const char *prefix = def->def.ty.old_prefix;
|
|
const char *type = def->def.ty.old_type;
|
|
const char *amax = def->def.ty.array_max;
|
|
relation rel = def->def.ty.rel;
|
|
|
|
print_ifstat (1, prefix, type, rel, amax, "objp", def->def_name);
|
|
}
|
|
|
|
static void
|
|
print_stat (int indent, const declaration * dec)
|
|
{
|
|
const char *prefix = dec->prefix;
|
|
const char *type = dec->type;
|
|
const char *amax = dec->array_max;
|
|
relation rel = dec->rel;
|
|
char name[256];
|
|
|
|
if (isvectordef (type, rel))
|
|
{
|
|
s_print (name, "objp->%s", dec->name);
|
|
}
|
|
else
|
|
{
|
|
s_print (name, "&objp->%s", dec->name);
|
|
}
|
|
print_ifstat (indent, prefix, type, rel, amax, name, dec->name);
|
|
}
|
|
|
|
|
|
static void
|
|
emit_inline (int indent, declaration * decl, int flag)
|
|
{
|
|
switch (decl->rel)
|
|
{
|
|
case REL_ALIAS:
|
|
emit_single_in_line (indent, decl, flag, REL_ALIAS);
|
|
break;
|
|
case REL_VECTOR:
|
|
tabify (fout, indent);
|
|
f_print (fout, "{\n");
|
|
tabify (fout, indent + 1);
|
|
f_print (fout, "register %s *genp;\n\n", decl->type);
|
|
tabify (fout, indent + 1);
|
|
f_print (fout,
|
|
"for (i = 0, genp = objp->%s;\n", decl->name);
|
|
tabify (fout, indent + 2);
|
|
f_print (fout, "i < %s; ++i) {\n", decl->array_max);
|
|
emit_single_in_line (indent + 2, decl, flag, REL_VECTOR);
|
|
tabify (fout, indent + 1);
|
|
f_print (fout, "}\n");
|
|
tabify (fout, indent);
|
|
f_print (fout, "}\n");
|
|
break;
|
|
default:
|
|
break;
|
|
/* ?... do nothing I guess */
|
|
}
|
|
}
|
|
|
|
static void
|
|
emit_single_in_line (int indent, declaration *decl, int flag, relation rel)
|
|
{
|
|
char *upp_case;
|
|
int freed = 0;
|
|
|
|
tabify (fout, indent);
|
|
if (flag == PUT)
|
|
f_print (fout, "IXDR_PUT_");
|
|
else
|
|
{
|
|
if (rel == REL_ALIAS)
|
|
f_print (fout, "objp->%s = IXDR_GET_", decl->name);
|
|
else
|
|
f_print (fout, "*genp++ = IXDR_GET_");
|
|
}
|
|
|
|
upp_case = upcase (decl->type);
|
|
|
|
/* hack - XX */
|
|
if (!strcmp (upp_case, "INT"))
|
|
{
|
|
free (upp_case);
|
|
freed = 1;
|
|
/* Casting is safe since the `freed' flag is set. */
|
|
upp_case = (char *) "LONG";
|
|
}
|
|
|
|
if (!strcmp (upp_case, "U_INT"))
|
|
{
|
|
free (upp_case);
|
|
freed = 1;
|
|
/* Casting is safe since the `freed' flag is set. */
|
|
upp_case = (char *) "U_LONG";
|
|
}
|
|
|
|
if (flag == PUT)
|
|
{
|
|
if (rel == REL_ALIAS)
|
|
f_print (fout, "%s(buf, objp->%s);\n", upp_case, decl->name);
|
|
else
|
|
f_print (fout, "%s(buf, *genp++);\n", upp_case);
|
|
}
|
|
else
|
|
{
|
|
f_print (fout, "%s(buf);\n", upp_case);
|
|
}
|
|
|
|
if (!freed)
|
|
free (upp_case);
|
|
}
|
|
|
|
|
|
static char *
|
|
upcase (const char *str)
|
|
{
|
|
char *ptr, *hptr;
|
|
ptr = malloc (strlen (str) + 1);
|
|
if (ptr == NULL)
|
|
{
|
|
f_print (stderr, "malloc failed\n");
|
|
exit (1);
|
|
}
|
|
hptr = ptr;
|
|
while (*str != '\0')
|
|
*ptr++ = toupper (*str++);
|
|
|
|
*ptr = '\0';
|
|
return hptr;
|
|
}
|