luke/iverilog
1
0
Fork 0
mirror of https://github.com/steveicarus/iverilog.git synced 2026-08-29 01:03:29 +02:00
Code Issues Packages Projects Releases Wiki Activity

Support nested l-value objects

Browse Source 
This allows for syntax like a.b.c where a is a class with member
b, which is a class with member c, and so on. The handling is mostly
for the support of compound objects like classes.
This commit is contained in:
Stephen Williams
2013-11-22 19:54:42 -08:00
parent 37ac1ed474
commit fa8d35ae9c
14 changed files with 199 additions and 68 deletions
Download Patch File Download Diff File Expand all files Collapse all files
tgt-stub/statement.c
+54 -1
View File
@@ -76,8 +76,59 @@ static unsigned show_assign_lval_class(ivl_lval_t lval, unsigned ind)
return ivl_lval_width(lval);
}
unsigned width_of_type(ivl_type_t net)
{
switch (ivl_type_packed_dimensions(net)) {
case 0:
return 1;
case 1: {
int msb = ivl_type_packed_msb(net,0);
int lsb = ivl_type_packed_lsb(net,0);
if (msb > lsb)
return msb-lsb+1;
else
return lsb-msb+1;
}
default:
return 0;
}
}
static ivl_type_t show_assign_lval_nest(ivl_lval_t lval, unsigned ind)
{
ivl_type_t sub_type;
if (ivl_lval_nest(lval)) {
fprintf(out, "%*s{nested lval property=%d}\n", ind, "",
ivl_lval_property_idx(lval));
sub_type = show_assign_lval_nest(ivl_lval_nest(lval), ind+4);
} else {
assert(ivl_lval_sig(lval));
ivl_signal_t sig = ivl_lval_sig(lval);
fprintf(out, "%*s{name=%s property=%d, signal width=%u l-value width=%u}\n",
ind, "",
ivl_signal_name(sig),
ivl_lval_property_idx(lval),
ivl_signal_width(sig),
ivl_lval_width(lval));
sub_type = ivl_signal_net_type(sig);
}
assert(ivl_type_base(sub_type) == IVL_VT_CLASS);
ivl_type_t lval_type = ivl_type_prop_type(sub_type, ivl_lval_property_idx(lval));
return lval_type;
}
static unsigned show_assign_lval(ivl_lval_t lval, unsigned ind)
{
ivl_lval_t lval_nest = ivl_lval_nest(lval);
if (lval_nest) {
ivl_type_t net_type = show_assign_lval_nest(lval, ind);
return width_of_type(net_type);
}
ivl_signal_t sig = ivl_lval_sig(lval);
assert(sig);
@@ -254,6 +305,7 @@ void show_statement(ivl_statement_t net, unsigned ind)
{
unsigned idx;
char opcode = 0;
unsigned lwid = 0;
const ivl_statement_type_t code = ivl_statement_type(net);
switch (code) {
@@ -270,13 +322,14 @@ void show_statement(ivl_statement_t net, unsigned ind)
ivl_stmt_lwidth(net), opcode);
for (idx = 0 ; idx < ivl_stmt_lvals(net) ; idx += 1)
show_assign_lval(ivl_stmt_lval(net, idx), ind+4);
lwid += show_assign_lval(ivl_stmt_lval(net, idx), ind+4);
if (ivl_stmt_delay_expr(net))
show_expression(ivl_stmt_delay_expr(net), idx+4);
if (ivl_stmt_rval(net))
show_expression(ivl_stmt_rval(net), ind+4);
fprintf(out, "%*sTotal l-value width is %u\n", ind+2, "", lwid);
break;
case IVL_ST_ASSIGN_NB: