static void
unsigned_dec(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;
}
}
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 = "quad_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
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
def_union (definition *defp)
{
token tok;
declaration dec;
case_list *cases;
/* case_list *tcase; */
case_list **tailp;
#if 0
int flag;
#endif
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 */
#if 0
flag = 0;
#endif
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));
}
#if 0
else if (flag)
{
*tailp = cases;
tailp = &cases->next;
cases = ALLOC (case_list);
};
#endif
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 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;
}
