Files
happening/src/parsing.rs
T

111 lines
3.0 KiB
Rust

use std::collections::HashMap;
use crate::character;
use crate::api;
use crate::mpsc::*;
use std::{thread};
use std::sync::{Arc,Mutex};
use std::time::Duration;
mod strings;
// Parse the tokens in a file
// Returns success or an error string
pub async fn token_parse(
tokens: &Vec<&str>,
mut characters: &mut HashMap::<String, character::Character>,
data_to_send: Arc<Mutex<api::Data_to_send>>,
rx: &Receiver<u8>,
) -> Result<(),String>
{
let mut index: usize = 0;
// Run an infinite loop
loop
{
match rx.try_recv()
{
Ok(_) =>
{
match tokens.get(index) {
Some(token) => {
// The instructions are related to characters
if token.chars().next().unwrap() == '@'
{
let character_name: String = token.chars().skip(1).collect();
// If the character doesn't exist, then create it
if ! characters.contains_key(&character_name)
{
let new_character = character::Character::new(character_name.clone());
characters.insert(character_name.clone(),new_character);
}
println!("Doing something with a character: {}", character_name);
// The index is incremented to after the character's instructions
index += match character_parse(index+1, &tokens, character_name, &mut characters, &data_to_send, &rx).await
{
Ok(increment) => {
increment
},
Err(error) => return Err(error),
}
}
// Miscelleneous instructions
if token.to_lowercase() == "end"
{
return Ok(()) // quit
}
},
None => return Err(String::from("File reached termination point")),
}
index += 1;
},
Err(_) => thread::sleep(Duration::from_millis(4000)),
}
}
}
// Parsing character related instructions
async fn character_parse
(
index: usize,
tokens: &Vec<&str>,
character_name: String,
characters: &mut HashMap::<String, character::Character>,
data_to_send: &Arc<Mutex<api::Data_to_send>>,
rx: &Receiver<u8>,
) -> Result<usize,String>
{
let mut sum_index: usize = index;
loop
{
// Ensure the index is valid (the index is not beyond the vector)
let _ = match tokens.get(sum_index)
{
Some(token) => {
match token.to_lowercase().as_str()
{
// The character is saying something, so grab the text and pass it
// to the client
"says" =>
{
match strings::extract_quoted(&tokens[sum_index+1..])
{
Some(output_string) =>
{
println!("{}", output_string);
let mut data = data_to_send.lock().unwrap();
data.action_type = String::from("output");
data.content = output_string;
data.character = character_name.clone();
},
None => return Err(String::from("Unable to read string")),
}
},
// Catch all condition, if the instruction is unrecognised as a
// character command
_ => return Err(String::from("Invalid command")),
}
},
None => return Err(String::from("File reached termination point"))
};
sum_index += 1;
}
}