// 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::{ast::Rule, common::Identifier, expressions::Expression, statements::Statement, SpanDef};

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

#[derive(Clone, Debug, FromPest, PartialEq, Serialize)]
#[pest_ast(rule(Rule::statement_for))]
pub struct ForStatement<'ast> {
    pub index: Identifier<'ast>,
    pub start: Expression<'ast>,
    pub stop: Expression<'ast>,
    pub statements: Vec<Statement<'ast>>,
    #[pest_ast(outer())]
    #[serde(with = "SpanDef")]
    pub span: Span<'ast>,
}

impl<'ast> fmt::Display for ForStatement<'ast> {
    fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
        write!(
            f,
            "for {} in {}..{} {{ {:#?} }}",
            self.index, self.start, self.stop, self.statements
        )
    }
}