fp_t ast_fun_call_expr::eval(symbol_table& sym)
{
list<fp_t> args;
for (auto _ex : *_exs)
args.push_back(_ex->eval(sym));
sym.open_scope();
ptr<ast_fun_def> _fd = sym.get_fun_def(_id);
auto arg_it = args.begin();
for (auto _param_id : *(_fd->_ids))
sym.set_var(_param_id, *arg_it++);
maybe_fp_t ret = _fd->_bl->exec(sym);
sym.close_scope();
if (not ret.is_valid)
{
// runtime error
cerr << MYLANGA_RUNTIME_ERROR << " | " << \
"La función \'" << *_id << "\' se ejecutó sin retornar un valor." << endl;
MYLANGA_END_ABRUPTLY();
}
return ret.value;
}
void ast_plot_cmd::plot(symbol_table& sym)
{
sym.open_scope();
fp_t range_from = _ex1->eval(sym),
range_step = _ex2->eval(sym),
range_to = _ex3->eval(sym);
for (fp_t x = range_from; x <= range_to; x += range_step)
{
sym.set_var(_id, x);
fp_t x_value = _ex_x->eval(sym),
y_value = _ex_y->eval(sym);
cout << x_value << " " << y_value << endl;
}
sym.close_scope();
}
maybe_fp_t ast_var_assign_stmt::exec(symbol_table& sym)
{
sym.set_var(_id, _ex->eval(sym));
return maybe_fp_t();
}