425 lines
9.1 KiB
C
425 lines
9.1 KiB
C
/* @(#)rpc_parse.c 2.1 88/08/01 4.0 RPCSRC */
|
|
/*
|
|
* Sun RPC is a product of Sun Microsystems, Inc. and is provided for
|
|
* unrestricted use provided that this legend is included on all tape
|
|
* media and as a part of the software program in whole or part. Users
|
|
* may copy or modify Sun RPC without charge, but are not authorized
|
|
* to license or distribute it to anyone else except as part of a product or
|
|
* program developed by the user.
|
|
*
|
|
* SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE
|
|
* WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE.
|
|
*
|
|
* Sun RPC is provided with no support and without any obligation on the
|
|
* part of Sun Microsystems, Inc. to assist in its use, correction,
|
|
* modification or enhancement.
|
|
*
|
|
* SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE
|
|
* INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC
|
|
* OR ANY PART THEREOF.
|
|
*
|
|
* In no event will Sun Microsystems, Inc. be liable for any lost revenue
|
|
* or profits or other special, indirect and consequential damages, even if
|
|
* Sun has been advised of the possibility of such damages.
|
|
*
|
|
* Sun Microsystems, Inc.
|
|
* 2550 Garcia Avenue
|
|
* Mountain View, California 94043
|
|
*/
|
|
#ifndef lint
|
|
/*static char sccsid[] = "from: @(#)rpc_parse.c 1.4 87/04/28 (C) 1987 SMI";*/
|
|
static char rcsid[] = "$Id: rpc_parse.c,v 1.1 1994/08/07 18:01:32 wollman Exp $";
|
|
#endif
|
|
|
|
/*
|
|
* rpc_parse.c, Parser for the RPC protocol compiler
|
|
* Copyright (C) 1987 Sun Microsystems, Inc.
|
|
*/
|
|
#include <stdio.h>
|
|
#include "rpc_util.h"
|
|
#include "rpc_scan.h"
|
|
#include "rpc_parse.h"
|
|
|
|
static int isdefined(), def_struct(), def_program(), def_enum(), def_const(),
|
|
def_union(), def_typedef(), get_declaration(), get_type(),
|
|
unsigned_dec();
|
|
/*
|
|
* return the next definition you see
|
|
*/
|
|
definition *
|
|
get_definition()
|
|
{
|
|
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);
|
|
break;
|
|
default:
|
|
error("definition keyword expected");
|
|
}
|
|
scan(TOK_SEMICOLON, &tok);
|
|
isdefined(defp);
|
|
return (defp);
|
|
}
|
|
|
|
static
|
|
isdefined(defp)
|
|
definition *defp;
|
|
{
|
|
STOREVAL(&defined, defp);
|
|
}
|
|
|
|
|
|
static
|
|
def_struct(defp)
|
|
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
|
|
def_program(defp)
|
|
definition *defp;
|
|
{
|
|
token tok;
|
|
version_list *vlist;
|
|
version_list **vtailp;
|
|
proc_list *plist;
|
|
proc_list **ptailp;
|
|
|
|
defp->def_kind = DEF_PROGRAM;
|
|
scan(TOK_IDENT, &tok);
|
|
defp->def_name = tok.str;
|
|
scan(TOK_LBRACE, &tok);
|
|
vtailp = &defp->def.pr.versions;
|
|
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 {
|
|
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_type(&plist->arg_prefix, &plist->arg_type, DEF_PROGRAM);
|
|
if (streq(plist->arg_type, "opaque")) {
|
|
error("illegal argument type");
|
|
}
|
|
scan(TOK_RPAREN, &tok);
|
|
scan(TOK_EQUAL, &tok);
|
|
scan_num(&tok);
|
|
scan(TOK_SEMICOLON, &tok);
|
|
plist->proc_num = tok.str;
|
|
*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;
|
|
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
|
|
def_enum(defp)
|
|
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
|
|
def_const(defp)
|
|
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
|
|
def_union(defp)
|
|
definition *defp;
|
|
{
|
|
token tok;
|
|
declaration dec;
|
|
case_list *cases;
|
|
case_list **tailp;
|
|
|
|
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) {
|
|
scan(TOK_IDENT, &tok);
|
|
cases = ALLOC(case_list);
|
|
cases->case_name = tok.str;
|
|
scan(TOK_COLON, &tok);
|
|
get_declaration(&dec, DEF_UNION);
|
|
cases->case_decl = dec;
|
|
*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
|
|
def_typedef(defp)
|
|
definition *defp;
|
|
{
|
|
declaration dec;
|
|
|
|
defp->def_kind = DEF_TYPEDEF;
|
|
get_declaration(&dec, DEF_TYPEDEF);
|
|
defp->def_name = dec.name;
|
|
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
|
|
get_declaration(dec, dkind)
|
|
declaration *dec;
|
|
defkind dkind;
|
|
{
|
|
token tok;
|
|
|
|
get_type(&dec->prefix, &dec->type, dkind);
|
|
dec->rel = REL_ALIAS;
|
|
if (streq(dec->type, "void")) {
|
|
return;
|
|
}
|
|
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
|
|
get_type(prefixp, typep, dkind)
|
|
char **prefixp;
|
|
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_VOID:
|
|
if (dkind != DEF_UNION && dkind != DEF_PROGRAM) {
|
|
error("voids allowed only inside union and program definitions");
|
|
}
|
|
*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
|
|
unsigned_dec(typep)
|
|
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_INT:
|
|
get_token(&tok);
|
|
*typep = "u_int";
|
|
break;
|
|
default:
|
|
*typep = "u_int";
|
|
break;
|
|
}
|
|
}
|