// Copyright 2019 TiKV Project Authors. Licensed under Apache-2.0.

//! This crate implements a simple SQL query engine to work with TiDB pushed down executors.
//!
//! The query engine is able to scan and understand rows stored by TiDB, run against a
//! series of executors and then return the execution result. The query engine is provided via
//! TiKV Coprocessor interface. However standalone UDF functions are also exported and can be used
//! standalone.

#![feature(proc_macro_hygiene)]
#![feature(specialization)]
#![feature(const_mut_refs)]
#![feature(const_fn_trait_bound)]
#![feature(const_fn_fn_ptr_basics)]
#![feature(iter_order_by)]
#![feature(test)]
#![feature(int_error_matching)]
#![feature(decl_macro)]
#![feature(str_internals)]
#![feature(const_loop)]
#![feature(const_if_match)]
#![feature(ptr_offset_from)]
// FIXME: rustc says there are redundant semicolons here but isn't
// saying where as of nightly-2019-09-05
// See https://github.com/rust-lang/rust/issues/63967
#![allow(redundant_semicolon)]
// FIXME: ditto. probably a result of the above
#![allow(clippy::no_effect)]
#![feature(box_patterns)]
#![feature(matches_macro)]

#[macro_use]
extern crate failure;
#[macro_use]
extern crate num_derive;
#[macro_use]
extern crate static_assertions;
#[macro_use(error, debug, warn)]
extern crate slog_global;
#[macro_use(box_err, box_try, try_opt)]
extern crate tikv_util;

#[cfg(test)]
extern crate test;

#[macro_use]
mod macros;

pub mod aggr_fn;
pub mod batch;
pub mod codec;
pub mod error;
pub mod execute_stats;
pub mod executor;
pub mod expr;
pub mod expr_util;
pub mod metrics;
pub mod rpn_expr;
pub mod storage;
pub mod util;
pub use self::error::{Error, Result};