685 lines
15 KiB
C
685 lines
15 KiB
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 or with the express written consent of
|
|
* Sun Microsystems, Inc.
|
|
*
|
|
* 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
|
|
*/
|
|
|
|
/*
|
|
* From: @(#)rpc_parse.c 1.8 89/02/22 (C) 1987 SMI
|
|
*/
|
|
const char parse_rcsid[] =
|
|
"$Id$";
|
|
|
|
/*
|
|
* rpc_parse.c, Parser for the RPC protocol compiler
|
|
* Copyright (C) 1987 Sun Microsystems, Inc.
|
|
*/
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include "rpc/types.h"
|
|
#include "rpc_scan.h"
|
|
#include "rpc_parse.h"
|
|
#include "rpc_util.h"
|
|
#include "proto.h"
|
|
|
|
#define ARGNAME "arg"
|
|
|
|
static void isdefined (definition * defp);
|
|
static void def_struct (definition * defp);
|
|
static void def_program (definition * defp);
|
|
static void def_enum (definition * defp);
|
|
static void def_const (definition * defp);
|
|
static void def_union (definition * defp);
|
|
static void check_type_name (const char *name, int new_type);
|
|
static void def_typedef (definition * defp);
|
|
static void get_declaration (declaration * dec, defkind dkind);
|
|
static void get_prog_declaration (declaration * dec, defkind dkind, int num);
|
|
static void get_type (const char **prefixp, const char **typep, defkind dkind);
|
|
static void unsigned_dec (const char **typep);
|
|
|
|
/*
|
|
* return the next definition you see
|
|
*/
|
|
definition *
|
|
get_definition (void)
|
|
{
|
|
definition *defp;
|
|
token tok;
|
|
|
|
defp = ALLOC (definition);
|
|
get_token (&tok);
|
|
switch (tok.kind)
|
|
{
|
|
case TOK_STRUCT:
|
|
def_struct (defp);
|
|
break;
|
|
case TOK_UNION:
|
|
def_union (defp);
|
|
break;
|
|
case TOK_TYPEDEF:
|
|
def_typedef (defp);
|
|
break;
|
|
case TOK_ENUM:
|
|
def_enum (defp);
|
|
break;
|
|
case TOK_PROGRAM:
|
|
def_program (defp);
|
|
break;
|
|
case TOK_CONST:
|
|
def_const (defp);
|
|
break;
|
|
case TOK_EOF:
|
|
return (NULL);
|
|
default:
|
|
error ("definition keyword expected");
|
|
}
|
|
scan (TOK_SEMICOLON, &tok);
|
|
isdefined (defp);
|
|
return (defp);
|
|
}
|
|
|
|
static void
|
|
isdefined (definition * defp)
|
|
{
|
|
STOREVAL (&defined, defp);
|
|
}
|
|
|
|
static void
|
|
def_struct (definition * defp)
|
|
{
|
|
token tok;
|
|
declaration dec;
|
|
decl_list *decls;
|
|
decl_list **tailp;
|
|
|
|
defp->def_kind = DEF_STRUCT;
|
|
|
|
scan (TOK_IDENT, &tok);
|
|
defp->def_name = tok.str;
|
|
scan (TOK_LBRACE, &tok);
|
|
tailp = &defp->def.st.decls;
|
|
do
|
|
{
|
|
get_declaration (&dec, DEF_STRUCT);
|
|
decls = ALLOC (decl_list);
|
|
decls->decl = dec;
|
|
*tailp = decls;
|
|
tailp = &decls->next;
|
|
scan (TOK_SEMICOLON, &tok);
|
|
peek (&tok);
|
|
}
|
|
while (tok.kind != TOK_RBRACE);
|
|
get_token (&tok);
|
|
*tailp = NULL;
|
|
}
|
|
|
|
static void
|
|
def_program (definition * defp)
|
|
{
|
|
token tok;
|
|
declaration dec;
|
|
decl_list *decls;
|
|
decl_list **tailp;
|
|
version_list *vlist;
|
|
version_list **vtailp;
|
|
proc_list *plist;
|
|
proc_list **ptailp;
|
|
int num_args;
|
|
bool_t isvoid = FALSE; /* whether first argument is void */
|
|
defp->def_kind = DEF_PROGRAM;
|
|
scan (TOK_IDENT, &tok);
|
|
defp->def_name = tok.str;
|
|
scan (TOK_LBRACE, &tok);
|
|
vtailp = &defp->def.pr.versions;
|
|
tailp = &defp->def.st.decls;
|
|
scan (TOK_VERSION, &tok);
|
|
do
|
|
{
|
|
scan (TOK_IDENT, &tok);
|
|
vlist = ALLOC (version_list);
|
|
vlist->vers_name = tok.str;
|
|
scan (TOK_LBRACE, &tok);
|
|
ptailp = &vlist->procs;
|
|
do
|
|
{
|
|
/* get result type */
|
|
plist = ALLOC (proc_list);
|
|
get_type (&plist->res_prefix, &plist->res_type,
|
|
DEF_PROGRAM);
|
|
if (streq (plist->res_type, "opaque"))
|
|
{
|
|
error ("illegal result type");
|
|
}
|
|
scan (TOK_IDENT, &tok);
|
|
plist->proc_name = tok.str;
|
|
scan (TOK_LPAREN, &tok);
|
|
/* get args - first one */
|
|
num_args = 1;
|
|
isvoid = FALSE;
|
|
/* type of DEF_PROGRAM in the first
|
|
* get_prog_declaration and DEF_STURCT in the next
|
|
* allows void as argument if it is the only argument
|
|
*/
|
|
get_prog_declaration (&dec, DEF_PROGRAM, num_args);
|
|
if (streq (dec.type, "void"))
|
|
isvoid = TRUE;
|
|
decls = ALLOC (decl_list);
|
|
plist->args.decls = decls;
|
|
decls->decl = dec;
|
|
tailp = &decls->next;
|
|
/* get args */
|
|
while (peekscan (TOK_COMMA, &tok))
|
|
{
|
|
num_args++;
|
|
get_prog_declaration (&dec, DEF_STRUCT,
|
|
num_args);
|
|
decls = ALLOC (decl_list);
|
|
decls->decl = dec;
|
|
*tailp = decls;
|
|
if (streq (dec.type, "void"))
|
|
isvoid = TRUE;
|
|
tailp = &decls->next;
|
|
}
|
|
/* multiple arguments are only allowed in newstyle */
|
|
if (!newstyle && num_args > 1)
|
|
{
|
|
error ("only one argument is allowed");
|
|
}
|
|
if (isvoid && num_args > 1)
|
|
{
|
|
error ("illegal use of void in program definition");
|
|
}
|
|
*tailp = NULL;
|
|
scan (TOK_RPAREN, &tok);
|
|
scan (TOK_EQUAL, &tok);
|
|
scan_num (&tok);
|
|
scan (TOK_SEMICOLON, &tok);
|
|
plist->proc_num = tok.str;
|
|
plist->arg_num = num_args;
|
|
*ptailp = plist;
|
|
ptailp = &plist->next;
|
|
peek (&tok);
|
|
}
|
|
while (tok.kind != TOK_RBRACE);
|
|
*ptailp = NULL;
|
|
*vtailp = vlist;
|
|
vtailp = &vlist->next;
|
|
scan (TOK_RBRACE, &tok);
|
|
scan (TOK_EQUAL, &tok);
|
|
scan_num (&tok);
|
|
vlist->vers_num = tok.str;
|
|
/* make the argument structure name for each arg */
|
|
for (plist = vlist->procs; plist != NULL;
|
|
plist = plist->next)
|
|
{
|
|
plist->args.argname = make_argname (plist->proc_name,
|
|
vlist->vers_num);
|
|
/* free the memory ?? */
|
|
}
|
|
scan (TOK_SEMICOLON, &tok);
|
|
scan2 (TOK_VERSION, TOK_RBRACE, &tok);
|
|
}
|
|
while (tok.kind == TOK_VERSION);
|
|
scan (TOK_EQUAL, &tok);
|
|
scan_num (&tok);
|
|
defp->def.pr.prog_num = tok.str;
|
|
*vtailp = NULL;
|
|
}
|
|
|
|
|
|
static void
|
|
def_enum (definition * defp)
|
|
{
|
|
token tok;
|
|
enumval_list *elist;
|
|
enumval_list **tailp;
|
|
|
|
defp->def_kind = DEF_ENUM;
|
|
scan (TOK_IDENT, &tok);
|
|
defp->def_name = tok.str;
|
|
scan (TOK_LBRACE, &tok);
|
|
tailp = &defp->def.en.vals;
|
|
do
|
|
{
|
|
scan (TOK_IDENT, &tok);
|
|
elist = ALLOC (enumval_list);
|
|
elist->name = tok.str;
|
|
elist->assignment = NULL;
|
|
scan3 (TOK_COMMA, TOK_RBRACE, TOK_EQUAL, &tok);
|
|
if (tok.kind == TOK_EQUAL)
|
|
{
|
|
scan_num (&tok);
|
|
elist->assignment = tok.str;
|
|
scan2 (TOK_COMMA, TOK_RBRACE, &tok);
|
|
}
|
|
*tailp = elist;
|
|
tailp = &elist->next;
|
|
}
|
|
while (tok.kind != TOK_RBRACE);
|
|
*tailp = NULL;
|
|
}
|
|
|
|
static void
|
|
def_const (definition * defp)
|
|
{
|
|
token tok;
|
|
|
|
defp->def_kind = DEF_CONST;
|
|
scan (TOK_IDENT, &tok);
|
|
defp->def_name = tok.str;
|
|
scan (TOK_EQUAL, &tok);
|
|
scan2 (TOK_IDENT, TOK_STRCONST, &tok);
|
|
defp->def.co = tok.str;
|
|
}
|
|
|
|
static void
|
|
def_union (definition *defp)
|
|
{
|
|
token tok;
|
|
declaration dec;
|
|
case_list *cases;
|
|
/* case_list *tcase; */
|
|
case_list **tailp;
|
|
int flag;
|
|
|
|
defp->def_kind = DEF_UNION;
|
|
scan (TOK_IDENT, &tok);
|
|
defp->def_name = tok.str;
|
|
scan (TOK_SWITCH, &tok);
|
|
scan (TOK_LPAREN, &tok);
|
|
get_declaration (&dec, DEF_UNION);
|
|
defp->def.un.enum_decl = dec;
|
|
tailp = &defp->def.un.cases;
|
|
scan (TOK_RPAREN, &tok);
|
|
scan (TOK_LBRACE, &tok);
|
|
scan (TOK_CASE, &tok);
|
|
while (tok.kind == TOK_CASE)
|
|
{
|
|
scan2 (TOK_IDENT, TOK_CHARCONST, &tok);
|
|
cases = ALLOC (case_list);
|
|
cases->case_name = tok.str;
|
|
scan (TOK_COLON, &tok);
|
|
/* now peek at next token */
|
|
flag = 0;
|
|
if (peekscan (TOK_CASE, &tok))
|
|
{
|
|
|
|
do
|
|
{
|
|
scan2 (TOK_IDENT, TOK_CHARCONST, &tok);
|
|
cases->contflag = 1; /* continued case statement */
|
|
*tailp = cases;
|
|
tailp = &cases->next;
|
|
cases = ALLOC (case_list);
|
|
cases->case_name = tok.str;
|
|
scan (TOK_COLON, &tok);
|
|
|
|
}
|
|
while (peekscan (TOK_CASE, &tok));
|
|
}
|
|
else if (flag)
|
|
{
|
|
|
|
*tailp = cases;
|
|
tailp = &cases->next;
|
|
cases = ALLOC (case_list);
|
|
};
|
|
|
|
get_declaration (&dec, DEF_UNION);
|
|
cases->case_decl = dec;
|
|
cases->contflag = 0; /* no continued case statement */
|
|
*tailp = cases;
|
|
tailp = &cases->next;
|
|
scan (TOK_SEMICOLON, &tok);
|
|
|
|
scan3 (TOK_CASE, TOK_DEFAULT, TOK_RBRACE, &tok);
|
|
}
|
|
*tailp = NULL;
|
|
if (tok.kind == TOK_DEFAULT)
|
|
{
|
|
scan (TOK_COLON, &tok);
|
|
get_declaration (&dec, DEF_UNION);
|
|
defp->def.un.default_decl = ALLOC (declaration);
|
|
*defp->def.un.default_decl = dec;
|
|
scan (TOK_SEMICOLON, &tok);
|
|
scan (TOK_RBRACE, &tok);
|
|
}
|
|
else
|
|
{
|
|
defp->def.un.default_decl = NULL;
|
|
}
|
|
}
|
|
|
|
static const char *reserved_words[] =
|
|
{
|
|
"array",
|
|
"bytes",
|
|
"destroy",
|
|
"free",
|
|
"getpos",
|
|
"inline",
|
|
"pointer",
|
|
"reference",
|
|
"setpos",
|
|
"sizeof",
|
|
"union",
|
|
"vector",
|
|
NULL
|
|
};
|
|
|
|
static const char *reserved_types[] =
|
|
{
|
|
"opaque",
|
|
"string",
|
|
NULL
|
|
};
|
|
|
|
/*
|
|
* check that the given name is not one that would eventually result in
|
|
* xdr routines that would conflict with internal XDR routines.
|
|
*/
|
|
static void
|
|
check_type_name (const char *name, int new_type)
|
|
{
|
|
int i;
|
|
char tmp[100];
|
|
|
|
for (i = 0; reserved_words[i] != NULL; i++)
|
|
{
|
|
if (strcmp (name, reserved_words[i]) == 0)
|
|
{
|
|
sprintf (tmp,
|
|
"illegal (reserved) name :\'%s\' in type definition", name);
|
|
error (tmp);
|
|
}
|
|
}
|
|
if (new_type)
|
|
{
|
|
for (i = 0; reserved_types[i] != NULL; i++)
|
|
{
|
|
if (strcmp (name, reserved_types[i]) == 0)
|
|
{
|
|
sprintf (tmp,
|
|
"illegal (reserved) name :\'%s\' in type definition", name);
|
|
error (tmp);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
def_typedef (definition * defp)
|
|
{
|
|
declaration dec;
|
|
|
|
defp->def_kind = DEF_TYPEDEF;
|
|
get_declaration (&dec, DEF_TYPEDEF);
|
|
defp->def_name = dec.name;
|
|
check_type_name (dec.name, 1);
|
|
defp->def.ty.old_prefix = dec.prefix;
|
|
defp->def.ty.old_type = dec.type;
|
|
defp->def.ty.rel = dec.rel;
|
|
defp->def.ty.array_max = dec.array_max;
|
|
}
|
|
|
|
static void
|
|
get_declaration (declaration * dec, defkind dkind)
|
|
{
|
|
token tok;
|
|
|
|
get_type (&dec->prefix, &dec->type, dkind);
|
|
dec->rel = REL_ALIAS;
|
|
if (streq (dec->type, "void"))
|
|
{
|
|
return;
|
|
}
|
|
|
|
check_type_name (dec->type, 0);
|
|
|
|
scan2 (TOK_STAR, TOK_IDENT, &tok);
|
|
if (tok.kind == TOK_STAR)
|
|
{
|
|
dec->rel = REL_POINTER;
|
|
scan (TOK_IDENT, &tok);
|
|
}
|
|
dec->name = tok.str;
|
|
if (peekscan (TOK_LBRACKET, &tok))
|
|
{
|
|
if (dec->rel == REL_POINTER)
|
|
{
|
|
error ("no array-of-pointer declarations -- use typedef");
|
|
}
|
|
dec->rel = REL_VECTOR;
|
|
scan_num (&tok);
|
|
dec->array_max = tok.str;
|
|
scan (TOK_RBRACKET, &tok);
|
|
}
|
|
else if (peekscan (TOK_LANGLE, &tok))
|
|
{
|
|
if (dec->rel == REL_POINTER)
|
|
{
|
|
error ("no array-of-pointer declarations -- use typedef");
|
|
}
|
|
dec->rel = REL_ARRAY;
|
|
if (peekscan (TOK_RANGLE, &tok))
|
|
{
|
|
dec->array_max = "~0"; /* unspecified size, use max */
|
|
}
|
|
else
|
|
{
|
|
scan_num (&tok);
|
|
dec->array_max = tok.str;
|
|
scan (TOK_RANGLE, &tok);
|
|
}
|
|
}
|
|
if (streq (dec->type, "opaque"))
|
|
{
|
|
if (dec->rel != REL_ARRAY && dec->rel != REL_VECTOR)
|
|
{
|
|
error ("array declaration expected");
|
|
}
|
|
}
|
|
else if (streq (dec->type, "string"))
|
|
{
|
|
if (dec->rel != REL_ARRAY)
|
|
{
|
|
error ("variable-length array declaration expected");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
get_prog_declaration (declaration * dec, defkind dkind, int num /* arg number */ )
|
|
{
|
|
token tok;
|
|
char name[10]; /* argument name */
|
|
|
|
if (dkind == DEF_PROGRAM)
|
|
{
|
|
peek (&tok);
|
|
if (tok.kind == TOK_RPAREN)
|
|
{ /* no arguments */
|
|
dec->rel = REL_ALIAS;
|
|
dec->type = "void";
|
|
dec->prefix = NULL;
|
|
dec->name = NULL;
|
|
return;
|
|
}
|
|
}
|
|
get_type (&dec->prefix, &dec->type, dkind);
|
|
dec->rel = REL_ALIAS;
|
|
if (peekscan (TOK_IDENT, &tok)) /* optional name of argument */
|
|
strcpy (name, tok.str);
|
|
else
|
|
sprintf (name, "%s%d", ARGNAME, num); /* default name of argument */
|
|
|
|
dec->name = (char *) strdup (name);
|
|
|
|
if (streq (dec->type, "void"))
|
|
{
|
|
return;
|
|
}
|
|
|
|
if (streq (dec->type, "opaque"))
|
|
{
|
|
error ("opaque -- illegal argument type");
|
|
}
|
|
if (peekscan (TOK_STAR, &tok))
|
|
{
|
|
if (streq (dec->type, "string"))
|
|
{
|
|
error ("pointer to string not allowed in program arguments\n");
|
|
}
|
|
dec->rel = REL_POINTER;
|
|
if (peekscan (TOK_IDENT, &tok)) /* optional name of argument */
|
|
dec->name = strdup (tok.str);
|
|
}
|
|
if (peekscan (TOK_LANGLE, &tok))
|
|
{
|
|
if (!streq (dec->type, "string"))
|
|
{
|
|
error ("arrays cannot be declared as arguments to procedures -- use typedef");
|
|
}
|
|
dec->rel = REL_ARRAY;
|
|
if (peekscan (TOK_RANGLE, &tok))
|
|
{
|
|
dec->array_max = "~0"; /* unspecified size, use max */
|
|
}
|
|
else
|
|
{
|
|
scan_num (&tok);
|
|
dec->array_max = tok.str;
|
|
scan (TOK_RANGLE, &tok);
|
|
}
|
|
}
|
|
if (streq (dec->type, "string"))
|
|
{
|
|
if (dec->rel != REL_ARRAY)
|
|
{ /* .x specifies just string as
|
|
* type of argument
|
|
* - make it string<>
|
|
*/
|
|
dec->rel = REL_ARRAY;
|
|
dec->array_max = "~0"; /* unspecified size, use max */
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
get_type (const char **prefixp, const char **typep, defkind dkind)
|
|
{
|
|
token tok;
|
|
|
|
*prefixp = NULL;
|
|
get_token (&tok);
|
|
switch (tok.kind)
|
|
{
|
|
case TOK_IDENT:
|
|
*typep = tok.str;
|
|
break;
|
|
case TOK_STRUCT:
|
|
case TOK_ENUM:
|
|
case TOK_UNION:
|
|
*prefixp = tok.str;
|
|
scan (TOK_IDENT, &tok);
|
|
*typep = tok.str;
|
|
break;
|
|
case TOK_UNSIGNED:
|
|
unsigned_dec (typep);
|
|
break;
|
|
case TOK_SHORT:
|
|
*typep = "short";
|
|
(void) peekscan (TOK_INT, &tok);
|
|
break;
|
|
case TOK_LONG:
|
|
*typep = "long";
|
|
(void) peekscan (TOK_INT, &tok);
|
|
break;
|
|
case TOK_HYPER:
|
|
*typep = "int64_t";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_VOID:
|
|
if (dkind != DEF_UNION && dkind != DEF_PROGRAM)
|
|
{
|
|
error ("voids allowed only inside union and program definitions with one argument");
|
|
}
|
|
*typep = tok.str;
|
|
break;
|
|
case TOK_STRING:
|
|
case TOK_OPAQUE:
|
|
case TOK_CHAR:
|
|
case TOK_INT:
|
|
case TOK_FLOAT:
|
|
case TOK_DOUBLE:
|
|
case TOK_BOOL:
|
|
*typep = tok.str;
|
|
break;
|
|
default:
|
|
error ("expected type specifier");
|
|
}
|
|
}
|
|
|
|
static void
|
|
unsigned_dec (const char **typep)
|
|
{
|
|
token tok;
|
|
|
|
peek (&tok);
|
|
switch (tok.kind)
|
|
{
|
|
case TOK_CHAR:
|
|
get_token (&tok);
|
|
*typep = "u_char";
|
|
break;
|
|
case TOK_SHORT:
|
|
get_token (&tok);
|
|
*typep = "u_short";
|
|
(void) peekscan (TOK_INT, &tok);
|
|
break;
|
|
case TOK_LONG:
|
|
get_token (&tok);
|
|
*typep = "u_long";
|
|
(void) peekscan (TOK_INT, &tok);
|
|
break;
|
|
case TOK_HYPER:
|
|
get_token (&tok);
|
|
*typep = "uint64_t";
|
|
(void) peekscan(TOK_INT, &tok);
|
|
break;
|
|
case TOK_INT:
|
|
get_token (&tok);
|
|
*typep = "u_int";
|
|
break;
|
|
default:
|
|
*typep = "u_int";
|
|
break;
|
|
}
|
|
}
|