private void markUnreferenced(Declarations d)
{
foreach (VarDecl vd in d.getAllVars())
{
vd.Referenced = false;
}
}
private void discardUnreferenced(Declarations d)
{
VarDecl[] vds = d.getAllVars().ToArray();
foreach (VarDecl vd in vds)
{
if (!vd.Referenced)
{
d.removeVar(vd);
}
}
}