void
Expression::push_back_ternary_op(const Expression &e1, const Expression &e2) {
Op op;
op.opcode = ExprOpcode::TERNARY_OP;
ops.push_back(op);
op.opcode = ExprOpcode::SKIP;
op.skip_num = e1.get_num_ops() + 1;
ops.push_back(op);
append_expression(e1);
op.skip_num = e2.get_num_ops();
ops.push_back(op);
append_expression(e2);
}
compile_states::States field_after_group_state_handler(CompileStateData& data)
{
if (data.current_expr->get_type() != compiled_expr::FIELD &&
data.current_expr->get_type() != compiled_expr::TAG)
{
throw ExprCompilerError("We're in FIELD_AFTER_GROUP state, but current EXPR is not a FIELD or TAG!");
}
// Creating a new `if' for this field.
append_expression(data);
// Appending a new result.
(*data.result) << " $r" << data.result_counter;
// Increasing result counter.
data.result_counter++;
if (data.next_expr->get_type() == compiled_expr::CONNECTIVE)
{
return compile_states::GROUP;
}
if (data.next_expr->get_type() == compiled_expr::END_CONNECTIVE_GROUP)
{
return compile_states::END_GROUP;
}
else if (data.next_expr->get_type() == compiled_expr::FIELD ||
data.next_expr->get_type() == compiled_expr::TAG)
{
return compile_states::FIELD;
}
// If we reach here, there's nothing else to do.
return compile_states::FINISH;
}
int main(int argc, char const *argv[])
{
Expression_t *a = Term("a"),
*b = Term("b"),
*c = TermLiteral(litInt(5)),
*plus = Plus(a,b),
*mult = Multiply(plus, c);
Expression_print(mult);
append_expression(mult, plus);
puts("");
Expression_printList(mult);
puts("");
return 0;
}
Expression_t *append_expression(Expression_t *e1, Expression_t *e2) {
if (!e1) return e2;
return app_exp(e1, append_expression(e1->next, e2));
}