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// Copyright (C) 2019-2024 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::{Block, Expression, Node, NodeID, Statement};
use leo_span::Span;
use serde::{Deserialize, Serialize};
use std::fmt;
/// An `if condition block (else next)?` statement.
#[derive(Clone, PartialEq, Eq, Serialize, Deserialize, Debug)]
pub struct ConditionalStatement {
/// The `bool`-typed condition deciding what to evaluate.
pub condition: Expression,
/// The block to evaluate in case `condition` yields `true`.
pub then: Block,
/// The statement, if any, to evaluate when `condition` yields `false`.
pub otherwise: Option<Box<Statement>>,
/// The span from `if` to `next` or to `block`.
pub span: Span,
/// The ID of the node.
pub id: NodeID,
}
impl fmt::Display for ConditionalStatement {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
write!(f, "if ({}) {}", self.condition, self.then)?;
match self.otherwise.as_ref() {
Some(n_or_e) => write!(f, " else {n_or_e}"),
None => write!(f, ""),
}
}
}
crate::simple_node_impl!(ConditionalStatement);