85 lines
1.7 KiB
Rust
85 lines
1.7 KiB
Rust
use itertools::Itertools;
|
|
use schala_lib::{ProgrammingLanguageInterface, EvalOptions, ReplOutput};
|
|
|
|
pub struct Rukka { }
|
|
|
|
impl Rukka {
|
|
pub fn new() -> Rukka { Rukka { } }
|
|
}
|
|
|
|
impl ProgrammingLanguageInterface for Rukka {
|
|
fn get_language_name(&self) -> String {
|
|
"Rukka".to_string()
|
|
}
|
|
|
|
fn get_source_file_suffix(&self) -> String {
|
|
format!("rukka")
|
|
}
|
|
|
|
fn evaluate_in_repl(&mut self, input: &str, _eval_options: &EvalOptions) -> ReplOutput {
|
|
let mut output = ReplOutput::default();
|
|
output.add_output(parse(input).and_then(|x| eval(x)).unwrap());
|
|
output
|
|
}
|
|
}
|
|
|
|
fn eval(ast: Sexp) -> Result<String, String> {
|
|
Ok(format!("Everything is ()"))
|
|
}
|
|
|
|
enum Token {
|
|
LParen,
|
|
RParen,
|
|
Symbol(String)
|
|
}
|
|
|
|
fn tokenize(input: &str) -> Vec<Token> {
|
|
let mut iter = input.chars().peekable();
|
|
let mut tokens = Vec::new();
|
|
loop {
|
|
match iter.next() {
|
|
None => break,
|
|
Some('(') => tokens.push(LParen),
|
|
Some(')') => tokens.push(RParen),
|
|
Some(c) if c.is_whitespace() => continue,
|
|
Some(c) => {
|
|
let mut sym = String::new();
|
|
loop {
|
|
match iter.peek() {
|
|
None | Some('(') | Some(')') => break,
|
|
Some(c) if c.is_whitespace() => break,
|
|
Some(c) => sym.push_char(c),
|
|
}
|
|
iter.next();
|
|
}
|
|
tokens.push(Symbol(sym));
|
|
}
|
|
}
|
|
}
|
|
tokens
|
|
}
|
|
|
|
fn parse(input: &str) -> Result<Sexp, String> {
|
|
let _tokens = tokenize(input);
|
|
Ok(Sexp::Atom(AtomT::Number(1)))
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
enum Sexp {
|
|
Atom(AtomT),
|
|
List(Vec<Sexp>),
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
enum AtomT {
|
|
Symbol(String),
|
|
Number(u64),
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
struct List<'a> {
|
|
next: Option<&'a List<'a>>,
|
|
data: usize
|
|
}
|
|
|