leo_ast/types/
mapping.rs

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// Copyright (C) 2019-2025 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::Type;

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

/// A mapping type of a key and value type.
#[derive(Clone, Debug, PartialEq, Eq, Hash, Serialize, Deserialize)]
pub struct MappingType {
    pub key: Box<Type>,
    pub value: Box<Type>,
    pub program: Symbol,
}

impl fmt::Display for MappingType {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(f, "({} => {})", self.key, self.value)
    }
}