// Copyright (C) 2019-2026 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::CompilerState;
use leo_ast::NodeID;

use leo_span::Symbol;

pub struct PathResolutionVisitor<'a> {
    pub state: &'a mut CompilerState,
    /// The current program.
    pub program: Symbol,
    /// The current module.
    pub module: Vec<Symbol>,
}

impl PathResolutionVisitor<'_> {
    /// Enter module scope with path `module`, execute `func`, and then return to the parent module.
    pub fn in_module_scope<T>(&mut self, module: &[Symbol], func: impl FnOnce(&mut Self) -> T) -> T {
        let parent_module = self.module.clone();
        self.module = module.to_vec();
        let result = func(self);
        self.module = parent_module;
        result
    }

    pub fn in_scope<T>(&mut self, id: NodeID, func: impl FnOnce(&mut Self) -> T) -> T {
        self.state.symbol_table.enter_scope(Some(id));
        let result = func(self);
        self.state.symbol_table.enter_parent();
        result
    }
}
