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extern crate regex;
mod token;
mod lexer;
mod error;
mod environment;
pub mod extension;
pub mod node;
pub mod parser;
pub mod operator;
pub mod value;
pub mod runtime;
pub use error::{ Error, Result };
pub use lexer::{ Lexer };
pub use lexer::iter::TokenIter;
pub use environment::{ CompiledEnvironment, Environment };
pub use token::Token;
pub use token::Value as TokenValue;
pub trait Expect<V> {
type Output;
fn expect(&mut self, expected: V) -> Self::Output;
}