serene-rust-implementation/bootstrap/src/types/symbol.rs

62 lines
1.6 KiB
Rust

/* Serene --- Yet an other Lisp
*
* Copyright (c) 2020 Sameer Rahmani <lxsameer@gnu.org>
*
* This program 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 2 of the License.
*
* This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
*/
use crate::ast::Node;
use std::fmt;
#[derive(Debug, Clone)]
pub struct Symbol {
pub name: String,
/// This field holds the ns specifier part of the symbol. For example
/// in case of `somens/somesym`, this field will hold `somens`.
pub target_ns: Option<String>,
}
impl Symbol {
pub fn new(name: String, target_ns: Option<String>) -> Symbol {
Symbol { name, target_ns }
}
pub fn is_ns_qualified(&self) -> bool {
!self.target_ns.is_none()
}
pub fn is_def(&self) -> bool {
self.name == "def"
}
}
impl PartialEq for Symbol {
fn eq(&self, other: &Self) -> bool {
self.name == other.name
}
}
impl Eq for Symbol {}
impl Node for Symbol {
fn get_type_str(&self) -> &str {
"Symbol"
}
}
impl fmt::Display for Symbol {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(f, "{}", &self.name)
}
}