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// Copyright 2017 The nom-lua project developers
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

//#![deny(missing_docs)]
//#![deny(warnings)]
#![doc(test(attr(allow(unused_variables), deny(warnings))))]

#[macro_use]
extern crate nom;

#[macro_use]
extern crate hexf_parse;

#[cfg(feature="graphviz")]
extern crate dot;

// this is going to be usefull when looking at this crate
// https://www.lua.org/manual/5.3/manual.html#9

macro_rules! ast_panic_test {
    ($name: ident, $func: ident, $input: expr) => {
        #[test]
        #[should_panic]
        fn $name () {
            use super::*;
            $func($input.as_bytes()).unwrap().1;
        }
    }
}

macro_rules! ast_test {
    ($name: ident, $func: ident, $input: expr, $output: expr) => {
        #[test]
        fn $name () {
            use super::*;
            assert_eq!($func($input.as_bytes()).unwrap().1, $output);
        }
    }
}

macro_rules! ast_valid {
    ($name: ident, $func: ident, $input: expr) => {
        #[test]
        fn $name () {
            use super::*;
            assert!(match $func($input.as_bytes()).unwrap().1 {
                _ => true,
            });
        }
    }
}

macro_rules! ast_invalid {
    ($name: ident, $func: ident, $input: expr) => {
        #[test]
        #[should_panic]
        fn $name () {
            use super::*;
            $func($input.as_bytes()).unwrap().1;
        }
    }
}

macro_rules! astb {
    ($name: ident, $($a: expr),*) => {
        $name($(Box::new($a)),*)
    };
}

macro_rules! ast {
    ($name: ident) => {
        $name
    };
    ($name: ident, $($a: expr),*) => {
        $name($($a),*)
    };
}



use function::parse_block;
pub use ast::ASTNode;
use std::io::Read;

pub mod ast;
pub mod op;
pub mod number;
pub mod exp;
pub mod string;
pub mod name;
pub mod var;
pub mod field;
pub mod statement;
pub mod function;

pub use nom::IResult;

//named!(pub parse_chunk<ASTNode>, ws!(parse_block));
use exp::parse_exp;
named!(pub parse_chunk<ASTNode>, dbg_dmp!(ws!(parse_exp)));

// TODO: Implement our own Error type
pub fn parse_string<'a, T: Into<&'a [u8]>>(s: T) -> Option<ASTNode> {
    match parse_chunk(s.into()) {
        IResult::Done(_, a) => Some(a),
        _ => None
    }
}

pub fn parse<T: Read>(mut s: T) -> Option<ASTNode> {
    let mut buf = vec![];
    s.read_to_end(&mut buf);
    buf.pop(); //Remove EOF
    match parse_chunk(&buf) {
        IResult::Done(_, a) => Some(a),
        _ => None
    }
}