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// Copyright (C) 2019-2020 Aleo Systems 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::{
    access::{ArrayAccess, MemberAccess, TupleAccess},
    ast::Rule,
};

use pest_ast::FromPest;
use serde::Serialize;
use std::fmt;

#[derive(Clone, Debug, FromPest, PartialEq, Serialize)]
#[pest_ast(rule(Rule::access_assignee))]
pub enum AssigneeAccess<'ast> {
    Array(ArrayAccess<'ast>),
    Tuple(TupleAccess<'ast>),
    Member(MemberAccess<'ast>),
}

impl<'ast> fmt::Display for AssigneeAccess<'ast> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        match *self {
            AssigneeAccess::Array(ref array) => write!(f, "[{}]", array.expression),
            AssigneeAccess::Tuple(ref tuple) => write!(f, ".{}", tuple.number),
            AssigneeAccess::Member(ref member) => write!(f, ".{}", member.identifier),
        }
    }
}