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Elaborate the null darray literal as a null expression. 

This leads to the correct code being generated in the vvp
code generator.
This commit is contained in:
Stephen Williams 2013-09-29 15:05:32 -07:00
parent 18c338ad09
commit cd85a42acc
1 changed files with 10 additions and 0 deletions
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10
elab_expr.cc
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@ -200,6 +200,16 @@ unsigned PEAssignPattern::test_width(Design*des, NetScope*scope, width_mode_t&mo
NetExpr*PEAssignPattern::elaborate_expr(Design*des, NetScope*scope,
ivl_type_t ntype, unsigned flags) const
{
// Special case: If this is an empty pattern (i.e. '{}) and
// the expected type is a DARRAY, then convert this to a null
// handle. Internally, Icarus Verilog uses this to represent
// nil dynamic arrays.
if (parms_.size() == 0 && ntype->base_type()==IVL_VT_DARRAY) {
NetENull*tmp = new NetENull;
tmp->set_line(*this);
return tmp;
}
cerr << get_fileline() << ": sorry: I don't know how to elaborate "
<< "assignment_pattern expressions yet." << endl;
cerr << get_fileline() << ": : Expression is: " << *this