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use crate::{
exec::{Executor, Interpreter},
realm::Realm,
syntax::{ast::node::Node, lexer::Lexer, parser::Parser},
};
use wasm_bindgen::prelude::*;
#[wasm_bindgen]
extern "C" {
#[wasm_bindgen(js_namespace = console)]
fn log(s: &str);
}
#[wasm_bindgen]
pub fn evaluate(src: &str) -> String {
let mut lexer = Lexer::new(&src);
match lexer.lex() {
Ok(_v) => (),
Err(v) => log(&v.to_string()),
}
let tokens = lexer.tokens;
let node: Node;
match Parser::new(&tokens).parse_all() {
Ok(v) => {
node = v;
}
Err(_v) => {
log("parsing fail");
return String::from("parsing failed");
}
}
let realm = Realm::create();
let mut engine: Interpreter = Executor::new(realm);
let result = engine.run(&node);
match result {
Ok(v) => v.to_string(),
Err(v) => format!("{}: {}", "error", v.to_string()),
}
}