mirror of https://gerrit.osmocom.org/asn1c
137 lines
2.8 KiB
C
137 lines
2.8 KiB
C
#include "asn1fix_internal.h"
|
|
|
|
/*
|
|
* Check the validity of an enumeration.
|
|
*/
|
|
int
|
|
asn1f_fix_enum(arg_t *arg) {
|
|
asn1p_expr_t *expr = arg->expr;
|
|
asn1p_expr_t *ev;
|
|
asn1_integer_t max_value = -1;
|
|
int rvalue = 0;
|
|
asn1p_expr_t *ext_marker = NULL; /* "..." position */
|
|
int ret;
|
|
|
|
if(expr->expr_type != ASN_BASIC_ENUMERATED)
|
|
return 0; /* Just ignore it */
|
|
|
|
DEBUG("%s(%s)", __func__, expr->Identifier);
|
|
|
|
/*
|
|
* 1. Scan the enumeration values in search for inconsistencies.
|
|
*/
|
|
TQ_FOR(ev, &(expr->members), next) {
|
|
asn1_integer_t eval;
|
|
|
|
if(ev->value)
|
|
DEBUG("\tItem %s(%s)", ev->Identifier,
|
|
asn1f_printable_value(ev->value));
|
|
else
|
|
DEBUG("\tItem %s", ev->Identifier);
|
|
|
|
/*
|
|
* 1.1 Found an extension mark "...", check correctness.
|
|
*/
|
|
if(ev->expr_type == A1TC_EXTENSIBLE) {
|
|
if(ext_marker) {
|
|
arg->eh(1,
|
|
"Enumeration %s at line %d: "
|
|
"Second extension marker is not allowed",
|
|
expr->Identifier,
|
|
ev->_lineno);
|
|
rvalue = -1;
|
|
} else {
|
|
/*
|
|
* Remember the marker's position.
|
|
*/
|
|
ext_marker = ev;
|
|
}
|
|
continue;
|
|
} else if(ev->Identifier == NULL
|
|
|| ev->expr_type != A1TC_UNIVERVAL) {
|
|
FATAL(
|
|
"Enumeration %s at line %d: "
|
|
"Unsupported enumeration element %s",
|
|
expr->Identifier,
|
|
ev->_lineno,
|
|
ev->Identifier?ev->Identifier:"<anonymous>");
|
|
rvalue = -1;
|
|
continue;
|
|
}
|
|
|
|
/*
|
|
* 1.2 Compute the value of the enumeration element.
|
|
*/
|
|
if(ev->value) {
|
|
switch(ev->value->type) {
|
|
case ATV_INTEGER:
|
|
eval = ev->value->value.v_integer;
|
|
break;
|
|
case ATV_REFERENCED:
|
|
FATAL("HERE HERE HERE", 1);
|
|
rvalue = -1;
|
|
continue;
|
|
break;
|
|
default:
|
|
FATAL("ENUMERATED type %s at line %d "
|
|
"contain element %s(%s) at line %d",
|
|
expr->Identifier, expr->_lineno,
|
|
ev->Identifier,
|
|
asn1f_printable_value(ev->value),
|
|
ev->_lineno);
|
|
rvalue = -1;
|
|
continue;
|
|
}
|
|
} else {
|
|
eval = max_value + 1;
|
|
ev->value = asn1p_value_fromint(eval);
|
|
if(ev->value == NULL) {
|
|
rvalue = -1;
|
|
continue;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 1.3 Check the applicability of this value.
|
|
*/
|
|
if(eval <= max_value) {
|
|
if(ext_marker) {
|
|
/*
|
|
* Enumeration is allowed to be unordered
|
|
* before the first marker.
|
|
*/
|
|
FATAL(
|
|
"Enumeration %s at line %d: "
|
|
"Explicit value \"%s(%lld)\" "
|
|
"is not greater "
|
|
"than previous values (max %lld)",
|
|
expr->Identifier,
|
|
ev->_lineno,
|
|
ev->Identifier,
|
|
eval,
|
|
max_value);
|
|
rvalue = -1;
|
|
}
|
|
} else if(eval > max_value) {
|
|
max_value = eval;
|
|
}
|
|
|
|
/*
|
|
* 1.4 Check that all identifiers before the current one
|
|
* differs from it.
|
|
*/
|
|
ret = asn1f_check_unique_expr_child(arg, ev, NULL);
|
|
RET2RVAL(ret, rvalue);
|
|
}
|
|
|
|
|
|
/*
|
|
* 2. Reorder the first half (before optional "...") of the
|
|
* identifiers alphabetically.
|
|
*/
|
|
// TODO
|
|
|
|
return rvalue;
|
|
}
|
|
|