FreeBSD-5.3/usr.bin/rpcgen/rpc_cout.c
/*
* 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
*/
#ident "@(#)rpc_cout.c 1.14 93/07/05 SMI"
#if 0
#ifndef lint
static char sccsid[] = "@(#)rpc_cout.c 1.13 89/02/22 (C) 1987 SMI";
#endif
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/usr.bin/rpcgen/rpc_cout.c,v 1.10 2002/07/21 12:55:03 charnier Exp $");
/*
* rpc_cout.c, XDR routine outputter for the RPC protocol compiler
* Copyright (C) 1987, Sun Microsystems, Inc.
*/
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_util.h"
static void print_header( definition * );
static void print_trailer( void );
static void print_stat( int , declaration * );
static void emit_enum( definition * );
static void emit_program( definition * );
static void emit_union( definition * );
static void emit_struct( definition * );
static void emit_typedef( definition * );
static void emit_inline( int, declaration *, int );
static void emit_single_in_line( int, declaration *, int, relation );
/*
* Emit the C-routine for the given definition
*/
void
emit(def)
definition *def;
{
if (def->def_kind == DEF_CONST) {
return;
}
if (def->def_kind == DEF_PROGRAM) {
emit_program(def);
return;
}
if (def->def_kind == DEF_TYPEDEF) {
/*
* now we need to handle declarations like
* struct typedef foo foo;
* since we dont want this to be expanded into 2 calls to xdr_foo
*/
if (strcmp(def->def.ty.old_type, def->def_name) == 0)
return;
};
print_header(def);
switch (def->def_kind) {
case DEF_UNION:
emit_union(def);
break;
case DEF_ENUM:
emit_enum(def);
break;
case DEF_STRUCT:
emit_struct(def);
break;
case DEF_TYPEDEF:
emit_typedef(def);
break;
/* DEF_CONST and DEF_PROGRAM have already been handled */
default:
break;
}
print_trailer();
}
static int
findtype(def, type)
definition *def;
char *type;
{
if (def->def_kind == DEF_PROGRAM || def->def_kind == DEF_CONST) {
return (0);
} else {
return (streq(def->def_name, type));
}
}
static int
undefined(type)
char *type;
{
definition *def;
def = (definition *) FINDVAL(defined, type, findtype);
return (def == NULL);
}
static void
print_generic_header(procname, pointerp)
char* procname;
int pointerp;
{
f_print(fout, "\n");
f_print(fout, "bool_t\n");
if (Cflag) {
f_print(fout, "xdr_%s(", procname);
f_print(fout, "register XDR *xdrs, ");
f_print(fout, "%s ", procname);
if (pointerp)
f_print(fout, "*");
f_print(fout, "objp)\n{\n\n");
} else {
f_print(fout, "xdr_%s(xdrs, objp)\n", procname);
f_print(fout, "\tregister XDR *xdrs;\n");
f_print(fout, "\t%s ", procname);
if (pointerp)
f_print(fout, "*");
f_print(fout, "objp;\n{\n\n");
}
}
static void
print_header(def)
definition *def;
{
print_generic_header(def->def_name,
def->def_kind != DEF_TYPEDEF ||
!isvectordef(def->def.ty.old_type,
def->def.ty.rel));
/* Now add Inline support */
if (inline == 0)
return;
/* May cause lint to complain. but ... */
f_print(fout, "\tregister long *buf;\n\n");
}
static void
print_prog_header(plist)
proc_list *plist;
{
print_generic_header(plist->args.argname, 1);
}
static void
print_trailer()
{
f_print(fout, "\treturn (TRUE);\n");
f_print(fout, "}\n");
}
static void
print_ifopen(indent, name)
int indent;
char *name;
{
tabify(fout, indent);
f_print(fout, "if (!xdr_%s(xdrs", name);
}
static void
print_ifarg(arg)
char *arg;
{
f_print(fout, ", %s", arg);
}
static void
print_ifsizeof(indent, prefix, type)
int indent;
char *prefix;
char *type;
{
if (indent) {
f_print(fout, ",\n");
tabify(fout, indent);
} else {
f_print(fout, ", ");
}
if (streq(type, "bool")) {
f_print(fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
} else {
f_print(fout, "sizeof (");
if (undefined(type) && prefix) {
f_print(fout, "%s ", prefix);
}
f_print(fout, "%s), (xdrproc_t) xdr_%s", type, type);
}
}
static void
print_ifclose(indent)
int indent;
{
f_print(fout, "))\n");
tabify(fout, indent);
f_print(fout, "\treturn (FALSE);\n");
}
static void
print_ifstat(indent, prefix, type, rel, amax, objname, name)
int indent;
char *prefix;
char *type;
relation rel;
char *amax;
char *objname;
char *name;
{
char *alt = NULL;
switch (rel) {
case REL_POINTER:
print_ifopen(indent, "pointer");
print_ifarg("(char **)");
f_print(fout, "%s", objname);
print_ifsizeof(0, prefix, type);
break;
case REL_VECTOR:
if (streq(type, "string")) {
alt = "string";
} else if (streq(type, "opaque")) {
alt = "opaque";
}
if (alt) {
print_ifopen(indent, alt);
print_ifarg(objname);
} else {
print_ifopen(indent, "vector");
print_ifarg("(char *)");
f_print(fout, "%s", objname);
}
print_ifarg(amax);
if (!alt) {
print_ifsizeof(indent + 1, prefix, type);
}
break;
case REL_ARRAY:
if (streq(type, "string")) {
alt = "string";
} else if (streq(type, "opaque")) {
alt = "bytes";
}
if (streq(type, "string")) {
print_ifopen(indent, alt);
print_ifarg(objname);
} else {
if (alt) {
print_ifopen(indent, alt);
} else {
print_ifopen(indent, "array");
}
print_ifarg("(char **)");
if (*objname == '&') {
f_print(fout, "%s.%s_val, (u_int *) %s.%s_len",
objname, name, objname, name);
} else {
f_print(fout,
"&%s->%s_val, (u_int *) &%s->%s_len",
objname, name, objname, name);
}
}
print_ifarg(amax);
if (!alt) {
print_ifsizeof(indent + 1, prefix, type);
}
break;
case REL_ALIAS:
print_ifopen(indent, type);
print_ifarg(objname);
break;
}
print_ifclose(indent);
}
/* ARGSUSED */
static void
emit_enum(def)
definition *def;
{
print_ifopen(1, "enum");
print_ifarg("(enum_t *)objp");
print_ifclose(1);
}
static void
emit_program(def)
definition *def;
{
decl_list *dl;
version_list *vlist;
proc_list *plist;
for (vlist = def->def.pr.versions; vlist != NULL; vlist = vlist->next)
for (plist = vlist->procs; plist != NULL; plist = plist->next) {
if (!newstyle || plist->arg_num < 2)
continue; /* old style, or single argument */
print_prog_header(plist);
for (dl = plist->args.decls; dl != NULL;
dl = dl->next)
print_stat(1, &dl->decl);
print_trailer();
}
}
static void
emit_union(def)
definition *def;
{
declaration *dflt;
case_list *cl;
declaration *cs;
char *object;
char *vecformat = "objp->%s_u.%s";
char *format = "&objp->%s_u.%s";
print_stat(1, &def->def.un.enum_decl);
f_print(fout, "\tswitch (objp->%s) {\n", def->def.un.enum_decl.name);
for (cl = def->def.un.cases; cl != NULL; cl = cl->next) {
f_print(fout, "\tcase %s:\n", cl->case_name);
if (cl->contflag == 1) /* a continued case statement */
continue;
cs = &cl->case_decl;
if (!streq(cs->type, "void")) {
object = xmalloc(strlen(def->def_name) +
strlen(format) + strlen(cs->name) + 1);
if (isvectordef (cs->type, cs->rel)) {
s_print(object, vecformat, def->def_name,
cs->name);
} else {
s_print(object, format, def->def_name,
cs->name);
}
print_ifstat(2, cs->prefix, cs->type, cs->rel,
cs->array_max, object, cs->name);
free(object);
}
f_print(fout, "\t\tbreak;\n");
}
dflt = def->def.un.default_decl;
if (dflt != NULL) {
if (!streq(dflt->type, "void")) {
f_print(fout, "\tdefault:\n");
object = xmalloc(strlen(def->def_name) +
strlen(format) + strlen(dflt->name) + 1);
if (isvectordef (dflt->type, dflt->rel)) {
s_print(object, vecformat, def->def_name,
dflt->name);
} else {
s_print(object, format, def->def_name,
dflt->name);
}
print_ifstat(2, dflt->prefix, dflt->type, dflt->rel,
dflt->array_max, object, dflt->name);
free(object);
f_print(fout, "\t\tbreak;\n");
} else {
f_print(fout, "\tdefault:\n");
f_print(fout, "\t\tbreak;\n");
}
} else {
f_print(fout, "\tdefault:\n");
f_print(fout, "\t\treturn (FALSE);\n");
}
f_print(fout, "\t}\n");
}
static void
inline_struct(def, flag)
definition *def;
int flag;
{
decl_list *dl;
int i, size;
decl_list *cur, *psav;
bas_type *ptr;
char *sizestr, *plus;
char ptemp[256];
int indent = 1;
cur = NULL;
if (flag == PUT)
f_print(fout, "\n\tif (xdrs->x_op == XDR_ENCODE) {\n");
else
f_print(fout, "\t\treturn (TRUE);\n\t} else if (xdrs->x_op == XDR_DECODE) {\n");
i = 0;
size = 0;
sizestr = NULL;
for (dl = def->def.st.decls; dl != NULL; dl = dl->next) { /* xxx */
/* now walk down the list and check for basic types */
if ((dl->decl.prefix == NULL) &&
((ptr = find_type(dl->decl.type)) != NULL) &&
((dl->decl.rel == REL_ALIAS) ||
(dl->decl.rel == REL_VECTOR))){
if (i == 0)
cur = dl;
i++;
if (dl->decl.rel == REL_ALIAS)
size += ptr->length;
else {
/* this code is required to handle arrays */
if (sizestr == NULL)
plus = "";
else
plus = " + ";
if (ptr->length != 1)
s_print(ptemp, "%s%s * %d",
plus, dl->decl.array_max,
ptr->length);
else
s_print(ptemp, "%s%s", plus,
dl->decl.array_max);
/* now concatenate to sizestr !!!! */
if (sizestr == NULL) {
sizestr = xstrdup(ptemp);
}
else{
sizestr = xrealloc(sizestr,
strlen(sizestr)
+strlen(ptemp)+1);
sizestr = strcat(sizestr, ptemp);
/* build up length of array */
}
}
} else {
if (i > 0) {
if (sizestr == NULL && size < inline){
/*
* don't expand into inline code
* if size < inline
*/
while (cur != dl){
print_stat(indent + 1, &cur->decl);
cur = cur->next;
}
} else {
/* were already looking at a xdr_inlineable structure */
tabify(fout, indent + 1);
if (sizestr == NULL)
f_print(fout, "buf = XDR_INLINE(xdrs, %d * BYTES_PER_XDR_UNIT);",
size);
else {
if (size == 0)
f_print(fout,
"buf = XDR_INLINE(xdrs, (%s) * BYTES_PER_XDR_UNIT);",
sizestr);
else
f_print(fout,
"buf = XDR_INLINE(xdrs, (%d + (%s)) * BYTES_PER_XDR_UNIT);",
size, sizestr);
}
f_print(fout, "\n");
tabify(fout, indent + 1);
f_print(fout,
"if (buf == NULL) {\n");
psav = cur;
while (cur != dl){
print_stat(indent + 2, &cur->decl);
cur = cur->next;
}
f_print(fout, "\n\t\t} else {\n");
cur = psav;
while (cur != dl){
emit_inline(indent + 2, &cur->decl, flag);
cur = cur->next;
}
tabify(fout, indent + 1);
f_print(fout, "}\n");
}
}
size = 0;
i = 0;
sizestr = NULL;
print_stat(indent + 1, &dl->decl);
}
}
if (i > 0) {
if (sizestr == NULL && size < inline){
/* don't expand into inline code if size < inline */
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");
}
}
}
static void
emit_struct(def)
definition *def;
{
decl_list *dl;
int j, size, flag;
bas_type *ptr;
int can_inline;
if (inline == 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 >= inline){
can_inline = 1;
break; /* can be inlined */
}
size = 0;
}
if (size >= inline)
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\treturn (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(def)
definition *def;
{
char *prefix = def->def.ty.old_prefix;
char *type = def->def.ty.old_type;
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(indent, dec)
int indent;
declaration *dec;
{
char *prefix = dec->prefix;
char *type = dec->type;
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);
}
char *upcase ();
static void
emit_inline(indent, decl, flag)
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;
}
}
static void
emit_single_in_line(indent, decl, flag, rel)
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") == 0)
{
free(upp_case);
freed = 1;
upp_case = "LONG";
}
if (strcmp(upp_case, "U_INT") == 0)
{
free(upp_case);
freed = 1;
upp_case = "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);
}
char *upcase(str)
char *str;
{
char *ptr, *hptr;
ptr = (char *)xmalloc(strlen(str)+1);
hptr = ptr;
while (*str != '\0')
*ptr++ = toupper(*str++);
*ptr = '\0';
return (hptr);
}