/*
* From: @(#)rpc_cout.c 1.13 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_cout.c, XDR routine outputter for the RPC protocol compiler
*/
#include <ctype.h>
#include <stdio.h>
#include <string.h>
#include "rpc_parse.h"
#include "rpc_util.h"
#include "proto.h"
static void emit_enum (definition * def);
static void emit_program (const definition * def);
static void emit_union (const definition * def);
static void emit_struct (definition * def);
static void emit_typedef (const definition * def);
static void emit_inline (int indent, declaration * decl, int flag);
static void emit_single_in_line (int indent, declaration *decl, int flag,
relation rel);
static int findtype (const definition * def, const char *type);
static int undefined (const char *type);
static void print_generic_header (const char *procname, int pointerp);
static void print_ifopen (int indent, const char *name);
static void print_ifarg (const char *arg);
static void print_ifsizeof (int indent, const char *prefix, const char *type);
static void print_ifclose (int indent);
static void print_ifstat (int indent, const char *prefix, const char *type,
relation rel, const char *amax,
const char *objname, const char *name);
static void print_stat (int indent, const declaration * dec);
static void print_header (const definition * def);
static void print_trailer (void);
static char *upcase (const char *str);
/*
* Emit the C-routine for the given definition
*/
void
emit (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 don't 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;
default:
/* can't happen */
break;
}
print_trailer ();
}
static int
findtype (const definition * def, const 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 (const char *type)
{
definition *def;
def = (definition *) FINDVAL (defined, type, findtype);
return (def == NULL);
}
static void
print_generic_header (const 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, "XDR *xdrs, ");
f_print (fout, "%s ", procname);
if (pointerp)
f_print (fout, "*");
f_print (fout, "objp)\n{\n");
}
else
{
f_print (fout, "xdr_%s (xdrs, objp)\n", procname);
f_print (fout, "\tXDR *xdrs;\n");
f_print (fout, "\t%s ", procname);
if (pointerp)
f_print (fout, "*");
f_print (fout, "objp;\n{\n");
}
}
static void
print_header (const 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 (inlineflag == 0)
return;
/*May cause lint to complain. but ... */
f_print (fout, "\tregister int32_t *buf;\n\n");
}
static void
print_prog_header (const proc_list * plist)
{
print_generic_header (plist->args.argname, 1);
}
static void
print_trailer (void)
{
f_print (fout, "\treturn TRUE;\n");
f_print (fout, "}\n");
}
static void
print_ifopen (int indent, const char *name)
{
tabify (fout, indent);
f_print (fout, " if (!xdr_%s (xdrs", name);
}
static void
print_ifarg (const char *arg)
{
f_print (fout, ", %s", arg);
}
static void
print_ifsizeof (int indent, const char *prefix, const char *type)
{
if (indent)
{
fprintf (fout, ",\n");
tabify (fout, indent);
}
else
fprintf (fout, ", ");
if (streq (type, "bool"))
fprintf (fout, "sizeof (bool_t), (xdrproc_t) xdr_bool");
else
{
fprintf (fout, "sizeof (");
if (undefined (type) && prefix)
{
f_print (fout, "%s ", prefix);
}
fprintf (fout, "%s), (xdrproc_t) xdr_%s", type, type);
}
}
static void
print_ifclose (int indent)
{
f_print (fout, "))\n");
tabify (fout, indent);
f_print (fout, "\t return FALSE;\n");
}
static void
print_ifstat (int indent, const char *prefix, const char *type, relation rel,
const char *amax, const char *objname, const char *name)
{
const 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);
}
static void
emit_enum (definition * def)
{
(void) def;
print_ifopen (1, "enum");
print_ifarg ("(enum_t *) objp");
print_ifclose (1);
}
static void
emit_program (const 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 (const definition * def)
{
declaration *dflt;
case_list *cl;
declaration *cs;
char *object;
const char *vecformat = "objp->%s_u.%s";
const 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 = alloc (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 = alloc (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 (definition *def, int flag)
{
decl_list *dl;
int i, size;
decl_list *cur = NULL;
decl_list *psav;
bas_type *ptr;
char *sizestr;
const char *plus;
char ptemp[256];
int indent = 1;
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 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 = strdup (ptemp);
else
{
sizestr = realloc (sizestr, strlen (sizestr) +
strlen (ptemp) + 1);
if (sizestr == NULL)
{
f_print (stderr, "Fatal error : no memory \n");
crash ();
};
sizestr = strcat (sizestr, ptemp);
/*build up length of array */
}
}
}
else
{
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 */
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);
fprintf (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 + 1, &cur->decl, flag);
cur = cur->next;
}
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;
}