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vlog95: add support for emitting nested class L-values

This commit is contained in:
Cary R 2013-12-19 20:38:48 -08:00
parent e4fc5806c4
commit 7fa2a4ccf3
1 changed files with 26 additions and 9 deletions
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35
tgt-vlog95/stmt.c
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@ -214,16 +214,27 @@ static void emit_stmt_lval_darray(ivl_scope_t scope, ivl_lval_t lval,
* Class or class properties are not supported in vlog95, but this assignment
* can be translated correctly.
*/
static void emit_stmt_lval_class(ivl_scope_t scope, ivl_lval_t lval,
ivl_signal_t sig)
static ivl_type_t emit_stmt_lval_class(ivl_scope_t scope, ivl_lval_t lval)
{
ivl_lval_t nest = ivl_lval_nest(lval);
ivl_signal_t sig = ivl_lval_sig(lval);
ivl_type_t type;
int idx = ivl_lval_property_idx(lval);
emit_scope_call_path(scope, ivl_signal_scope(sig));
emit_id(ivl_signal_basename(sig));
if (idx >= 0) {
ivl_type_t sig_type = ivl_signal_net_type(sig);
fprintf(vlog_out, ".%s", ivl_type_prop_name(sig_type, idx));
if (nest) {
type = emit_stmt_lval_class(scope, nest);
assert(type);
} else {
assert(sig);
emit_scope_call_path(scope, ivl_signal_scope(sig));
emit_id(ivl_signal_basename(sig));
type = ivl_signal_net_type(sig);
}
if (idx >= 0) {
fprintf(vlog_out, ".%s", ivl_type_prop_name(type, idx));
return ivl_type_prop_type(type, idx);
} else return 0;
}
static void emit_stmt_lval_piece(ivl_scope_t scope, ivl_lval_t lval)
@ -234,14 +245,20 @@ static void emit_stmt_lval_piece(ivl_scope_t scope, ivl_lval_t lval)
unsigned width = ivl_lval_width(lval);
int msb, lsb;
assert(width > 0);
assert(sig);
/* A class supports a nested L-value so it may not have a signal
* at this level. */
if (! sig) {
(void) emit_stmt_lval_class(scope, lval);
return;
}
switch (ivl_signal_data_type(sig)) {
case IVL_VT_DARRAY:
emit_stmt_lval_darray(scope, lval, sig);
return;
case IVL_VT_CLASS:
emit_stmt_lval_class(scope, lval, sig);
(void) emit_stmt_lval_class(scope, lval);
return;
default:
break;