leo_ast/expressions/unit.rs
1// Copyright (C) 2019-2025 Provable Inc.
2// This file is part of the Leo library.
3
4// The Leo library is free software: you can redistribute it and/or modify
5// it under the terms of the GNU General Public License as published by
6// the Free Software Foundation, either version 3 of the License, or
7// (at your option) any later version.
8
9// The Leo library is distributed in the hope that it will be useful,
10// but WITHOUT ANY WARRANTY; without even the implied warranty of
11// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12// GNU General Public License for more details.
13
14// You should have received a copy of the GNU General Public License
15// along with the Leo library. If not, see <https://www.gnu.org/licenses/>.
16
17use super::*;
18
19/// Represents a unit expression.
20#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize)]
21pub struct UnitExpression {
22 /// The span of the unit expression.
23 pub span: Span,
24 /// The ID of the node.
25 pub id: NodeID,
26}
27
28impl fmt::Display for UnitExpression {
29 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
30 f.write_str("()")
31 }
32}
33
34impl From<UnitExpression> for Expression {
35 fn from(value: UnitExpression) -> Self {
36 Expression::Unit(value)
37 }
38}
39
40crate::simple_node_impl!(UnitExpression);