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Handle task arguments with default expressions.

This commit is contained in:
Stephen Williams 2013-09-15 13:44:29 -07:00
parent 13bb927d8a
commit d9e1bcf3d0
1 changed files with 25 additions and 21 deletions
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46
elaborate.cc
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@ -3432,22 +3432,6 @@ NetProc* PCallTask::elaborate_build_call_(Design*des, NetScope*scope,
size_t parms_idx = use_this? idx-1 : idx;
if (parms_[parms_idx] == 0 && !gn_system_verilog()) {
cerr << get_fileline() << ": error: "
<< "Missing argument " << (idx+1)
<< " of call to task." << endl;
des->errors += 1;
continue;
}
if (parms_[parms_idx] == 0) {
cerr << get_fileline() << ": sorry: "
<< "Implicit arguments (arg " << (idx+1)
<< ") not supported." << endl;
des->errors += 1;
continue;
}
NetNet*port = def->port(idx);
assert(port->port_type() != NetNet::NOT_A_PORT);
if (port->port_type() == NetNet::POUTPUT)
@ -3457,11 +3441,31 @@ NetProc* PCallTask::elaborate_build_call_(Design*des, NetScope*scope,
unsigned wid = count_lval_width(lv);
ivl_variable_type_t lv_type = lv->expr_type();
NetExpr*rv = elaborate_rval_expr(des, scope, lv_type, wid, parms_ [parms_idx]);
if (NetEEvent*evt = dynamic_cast<NetEEvent*> (rv)) {
cerr << evt->get_fileline() << ": error: An event '"
<< evt->event()->name() << "' can not be a user "
"task argument." << endl;
NetExpr*rv = 0;
if (parms_[parms_idx]) {
rv = elaborate_rval_expr(des, scope, lv_type, wid, parms_ [parms_idx]);
if (NetEEvent*evt = dynamic_cast<NetEEvent*> (rv)) {
cerr << evt->get_fileline() << ": error: An event '"
<< evt->event()->name() << "' can not be a user "
"task argument." << endl;
des->errors += 1;
continue;
}
} else if (def->port_defe(idx)) {
if (! gn_system_verilog()) {
cerr << get_fileline() << ": internal error: "
<< "Found (and using) default task expression "
<< " requires SystemVerilog." << endl;
des->errors += 1;
}
rv = def->port_defe(idx);
} else {
cerr << get_fileline() << ": error: "
<< "Missing argument " << (idx+1)
<< " of call to task." << endl;
des->errors += 1;
continue;
}