private ActionBlock OnAssign(AssignActionBlock block)
{
var assign = block.AssignExpression;
var variable = assign.Target as VariableReferenceExpression;
if (variable == null) CannotOptimize(assign);
if (HasBeenAlreadyAssignedTo(variable)) CannotOptimize(assign.Expression);
_variables.Add(GetVariableIndex(variable), assign.Expression);
return block.Next;
}
void WriteAssign (AssignActionBlock block)
{
WriteExpression (block.AssignExpression);
}