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use std::str::FromStr;
mod number;
use self::number::*;
mod lexer;
use self::lexer::*;
mod parser;
use self::parser::*;
mod eval;
use self::eval::*;
use serde_derive::*;
use serde_yaml;
use serde::de::{self, Deserialize, Deserializer};
#[derive(Debug, Clone)]
pub struct Expression(ParseNode);
impl FromStr for Expression {
type Err = String;
fn from_str(s: &str) -> Result<Expression, Self::Err> {
Ok(Expression(ParseNode::from_str(s)?))
}
}
impl Expression {
pub fn eval(&self, value: i32, bytes: &[u8]) -> Result<Number, String> {
eval(&self.0, value, bytes)
}
}
impl<'de> Deserialize<'de> for Expression {
fn deserialize<D>(deserializer: D) -> Result<Expression, D::Error>
where
D: Deserializer<'de>,
{
let s = String::deserialize(deserializer)?;
Expression::from_str(&s).map_err(de::Error::custom)
}
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn test_lex() {
// println!("{:?}", lex("0xFF + 3").unwrap());
// println!("{:?}", lex("1024 << 0x04").unwrap());
// println!("{:?}", lex("9.32 + ($b1 * $v)").unwrap());
//
// let l = parse_expr(&lex("$b1 * 100 + $b0").unwrap()).unwrap();
// println!("{:?}", l);
// println!("{:?}", eval(&l, 12, &[1, 2, 3, 4, 5, 6, 7, 8]).unwrap());
//
// let lexed_output = lex("~(1 & 2 | 3 ^ 4 & 5 + 10)").unwrap();
// println!("lex: {:?}", lexed_output);
//
// let expr = parse_expr(&lexed_output).unwrap();
// println!("parse: {:#?}", expr);
//
// println!("result: {:?}", eval(&expr, 0, &[]));
}
}