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use std::{
collections::HashSet,
io::{BufRead, Write},
};
use ast::{QualIdentifier, Term};
use parse::ParseError;
use crate::ast::{Command, GeneralResponse};
pub mod ast;
#[cfg(feature = "cvc5")]
pub mod cvc5;
pub mod lexicon;
mod parse;
#[cfg(test)]
mod tests;
#[cfg(feature = "z3")]
pub mod z3;
#[derive(Debug)]
pub struct Driver<B> {
backend: B,
buf: String,
}
pub trait Backend: BufRead + Write {}
#[derive(Debug, thiserror::Error, miette::Diagnostic)]
pub enum Error {
#[error(transparent)]
#[diagnostic(transparent)]
Parse(
#[from]
#[diagnostic_source]
ParseError,
),
#[error(transparent)]
IO(#[from] std::io::Error),
}
impl<B> Driver<B>
where
B: Backend,
{
pub fn new(backend: B) -> Result<Self, Error> {
let mut driver = Self {
backend,
buf: Default::default(),
};
driver.exec(&Command::SetOption(crate::ast::Option::PrintSuccess(true)))?;
Ok(driver)
}
pub fn exec(&mut self, cmd: &Command) -> Result<GeneralResponse, Error> {
writeln!(self.backend, "{cmd}")?;
self.backend.flush()?;
loop {
let n = self.backend.read_line(&mut self.buf)?;
if n == 0 {
continue;
}
if self.buf.chars().filter(|c| *c == '(').count()
!= self.buf.chars().filter(|c| *c == ')').count()
{
continue;
}
if self.buf.ends_with('\n') {
self.buf.pop();
}
match cmd {
Command::Echo(_) if !self.buf.starts_with("(error") => {
self.buf.insert(0, '"');
self.buf.push('"');
}
_ => {}
}
let res = if cmd.has_response() {
match cmd.parse_response(&self.buf) {
Ok(Some(res)) => GeneralResponse::SpecificSuccessResponse(res),
Ok(None) => GeneralResponse::parse(&self.buf)?,
Err(_) => GeneralResponse::parse(&self.buf)?,
}
} else {
GeneralResponse::parse(&self.buf)?
};
self.buf.clear();
return Ok(res);
}
}
}
impl Term {
pub fn all_consts(&self) -> HashSet<&QualIdentifier> {
match self {
Term::SpecConstant(_) => HashSet::new(),
Term::Identifier(q) => std::iter::once(q).collect(),
Term::Application(q, args) => std::iter::once(q)
.chain(args.iter().flat_map(|arg| arg.all_consts()))
.collect(),
Term::Let(_, _) => todo!(),
Term::Forall(_, _) => HashSet::new(),
Term::Exists(_, _) => todo!(),
Term::Match(_, _) => todo!(),
Term::Annotation(_, _) => todo!(),
}
}
pub fn strip_sort(self) -> Term {
match self {
Term::SpecConstant(_) => self,
Term::Identifier(
QualIdentifier::Identifier(ident) | QualIdentifier::Sorted(ident, _),
) => Term::Identifier(QualIdentifier::Identifier(ident)),
Term::Application(
QualIdentifier::Identifier(ident) | QualIdentifier::Sorted(ident, _),
args,
) => Term::Application(
QualIdentifier::Identifier(ident),
args.into_iter().map(|arg| arg.strip_sort()).collect(),
),
Term::Let(_, _) => todo!(),
Term::Forall(qs, rs) => Term::Forall(qs, rs),
Term::Exists(_, _) => todo!(),
Term::Match(_, _) => todo!(),
Term::Annotation(_, _) => todo!(),
}
}
}