#![allow(dead_code)]
#![allow(unused_variables)]
#![allow(non_snake_case)]
#![allow(non_camel_case_types)]
#![allow(unused_parens)]
#![allow(unused_mut)]
#![allow(unused_assignments)]
#![allow(unused_doc_comments)]
#![allow(unused_imports)]
//use std::fmt::Display;
//use std::default::Default;
use std::collections::{HashMap,HashSet,BTreeSet};
use std::cell::{RefCell,Ref,RefMut};
use std::hash::{Hash,Hasher};
use std::io::{self,Read,Write,BufReader,BufRead,Result,Error,ErrorKind};
use std::fs::File;
use std::io::prelude::*;
use crate::{TRACE,Lexer,Lextoken,Stateaction,RuntimeParser};
// function to read file and agument
pub fn augment_file<AT:Default,ET:Default>(filename:&str, parser:&mut RuntimeParser<AT,ET>) -> std::io::Result<()>
{
let outfile = format!("augmented_{}",filename);
let finopt = match File::open(filename) {
Ok(f) => { Some(BufReader::new(f)) },
_ => { return Err(Error::new(ErrorKind::Other,"can't find file")); }
};
let mut fin = finopt.unwrap();
let mut fout = File::create(outfile)?;
let mut line = String::new();
fin.read_line(&mut line)?;
if line.trim()!="//Parser generated by rustlr" {
return Err(Error::new(ErrorKind::Other, "input file was not created by rustlr"));
}
write!(fout,"{}",&line)?;
let mut stop = false;
let mut oktoaugment = true;
while !stop
{
line = String::new();
match fin.read_line(&mut line) {
Ok(n) if n>0 => {},
_ => {stop=true; oktoaugment=false;}
}
if line.trim().len()>21 && &line.trim()[..21]=="}//end of load_extras" {stop=true;}
else {
write!(fout,"{}",&line)?;
}
}//while !stop
//// now augment
if oktoaugment {
//println!("AUGMENTATION STARTED");
for key in parser.trained.keys()
{
let (state,sym) = key;
let enter = parser.trained.get(key).unwrap().trim();
write!(fout," parser.RSM[{}].insert(\"{}\",Stateaction::Error(\"{}\".to_string()));\n",state,sym,enter)?;
}
write!(fout,"}}//end of load_extras: don't change this line as it affects augmentation\n")?;
}
else {return Err(Error::new(ErrorKind::Other,"given file cannot be augmented"));}
Ok(())
}//augment_file
// "//Parser generated by rustlr"
//}//end of load_extras: don't change this line as it affects augmentation