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#![allow(incomplete_features)]
#![feature(async_fn_in_trait)]
#![feature(custom_inner_attributes)]
#![feature(lint_reasons)]
#![feature(never_type)]
#![feature(once_cell)]
#![feature(test)]
#![deny(clippy::complexity)]
#![deny(clippy::nursery)]
#![deny(clippy::pedantic)]
#![deny(clippy::perf)]
#![deny(clippy::suspicious)]
#![deny(clippy::alloc_instead_of_core)]
#![deny(clippy::as_underscore)]
#![deny(clippy::clone_on_ref_ptr)]
#![deny(clippy::create_dir)]
#![warn(clippy::dbg_macro)]
#![deny(clippy::default_numeric_fallback)]
#![deny(clippy::default_union_representation)]
#![deny(clippy::deref_by_slicing)]
#![deny(clippy::empty_structs_with_brackets)]
#![deny(clippy::exit)]
#![deny(clippy::expect_used)]
#![deny(clippy::filetype_is_file)]
#![deny(clippy::fn_to_numeric_cast)]
#![deny(clippy::format_push_string)]
#![deny(clippy::get_unwrap)]
#![deny(clippy::if_then_some_else_none)]
#![allow(
clippy::implicit_return,
reason = "returns should be done implicitly, not explicitly"
)]
#![deny(clippy::indexing_slicing)]
#![deny(clippy::large_include_file)]
#![deny(clippy::let_underscore_must_use)]
#![deny(clippy::lossy_float_literal)]
#![deny(clippy::map_err_ignore)]
#![deny(clippy::mem_forget)]
#![deny(clippy::missing_docs_in_private_items)]
#![deny(clippy::missing_trait_methods)]
#![deny(clippy::mod_module_files)]
#![deny(clippy::multiple_inherent_impl)]
#![deny(clippy::mutex_atomic)]
#![deny(clippy::needless_return)]
#![deny(clippy::non_ascii_literal)]
#![deny(clippy::panic_in_result_fn)]
#![deny(clippy::pattern_type_mismatch)]
#![deny(clippy::rc_buffer)]
#![deny(clippy::rc_mutex)]
#![deny(clippy::rest_pat_in_fully_bound_structs)]
#![deny(clippy::same_name_method)]
#![deny(clippy::separated_literal_suffix)]
#![deny(clippy::str_to_string)]
#![deny(clippy::string_add)]
#![deny(clippy::string_slice)]
#![deny(clippy::string_to_string)]
#![allow(
clippy::tabs_in_doc_comments,
reason = "tabs are preferred for this project"
)]
#![deny(clippy::try_err)]
#![deny(clippy::undocumented_unsafe_blocks)]
#![deny(clippy::unnecessary_self_imports)]
#![deny(clippy::unneeded_field_pattern)]
#![deny(clippy::unwrap_in_result)]
#![deny(clippy::unwrap_used)]
#![warn(clippy::use_debug)]
#![deny(clippy::verbose_file_reads)]
#![deny(clippy::wildcard_dependencies)]
#![deny(clippy::wildcard_enum_match_arm)]
#![deny(missing_copy_implementations)]
#![deny(missing_debug_implementations)]
#![deny(missing_docs)]
#![deny(single_use_lifetimes)]
#![deny(unsafe_code)]
#![deny(unused)]
//! Brainfuck RS
//!
//! Implementation of a Brainfuck interpreter written in Rust.
#[cfg(test)]
extern crate test;
mod constants;
mod engine;
pub mod executor;
pub mod lexer;
pub mod parser;
#[cfg(feature = "utilities")]
pub mod utility;
pub use executor::Executor;
pub use lexer::{lex, OperatorCode};
use miette::Diagnostic;
pub use parser::{parse, Instruction};
use thiserror::Error;
/// Top-level error type for Brainfuck interpreter.
#[derive(Debug, Diagnostic, Error)]
pub enum Error {
/// Error occurred when reading input from a file.
#[error(transparent)]
Io(#[from] std::io::Error),
/// An error that occurred while parsing Brainfuck code.
#[diagnostic(transparent)]
#[error(transparent)]
Parser(#[from] parser::Error),
/// An error that occurred during runtime.
#[error(transparent)]
Runtime(#[from] executor::Error),
}
#[cfg(test)]
mod tests {
use test::Bencher;
use super::*;
use crate::constants::TapeInner;
#[test]
fn hello_world() -> Result<(), Error> {
let mut tape: Vec<TapeInner> = vec![0; 1024];
utility::execute_from_file("./test_programs/hello_world.bf", &mut tape)?;
Ok(())
}
#[bench]
fn hello_world_from_hell(b: &mut Bencher) {
b.iter(|| {
let mut tape: Vec<TapeInner> = vec![0; 1024];
#[allow(clippy::expect_used)]
utility::execute_from_file("./test_programs/hello_world.bf", &mut tape)
.expect("failed to run");
});
}
#[test]
fn hello_world_short() -> Result<(), Error> {
let mut tape: Vec<TapeInner> = vec![0; 1024];
utility::execute_from_str(
"--[+++++++<---->>-->+>+>+<<<<]<.>++++[-<++++>>->--<<]>>-.>--..>+.<<<.<<-.>>+>->>.\
+++[.<]",
&mut tape,
)?;
Ok(())
}
}
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