// Copyright (C) 2019-2026 Provable Inc.
// This file is part of the Leo library.

// The Leo library is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.

// The Leo library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License
// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.

use crate::{Mode, Node, NodeID, Type};
use leo_span::Span;

use serde::{Deserialize, Serialize};
use std::fmt;

/// A function output.
#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
pub struct Output {
    /// The mode of the function output.
    pub mode: Mode,
    /// The type of the function output.
    pub type_: Type,
    /// The parameters span from any annotations to its type.
    pub span: Span,
    /// The ID of the node.
    pub id: NodeID,
}

impl Output {
    pub fn type_(&self) -> &Type {
        &self.type_
    }

    pub fn mode(&self) -> Mode {
        self.mode
    }
}

impl fmt::Display for Output {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        if self.mode == Mode::None { write!(f, "{}", self.type_) } else { write!(f, "{} {}", self.mode, self.type_) }
    }
}

crate::simple_node_impl!(Output);
