Added some basic parsing ability, need to add the network calls
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pub struct Character
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{
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name: String,
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}
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impl Character
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{
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pub fn new(new_name: String) -> Character
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{
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Character
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{
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name: new_name,
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}
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}
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}
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@@ -0,0 +1,4 @@
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Indentation style: Allman
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Indentation characters: Tabs
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Maximum indents: 8
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Maximum lines per file: 200
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+17
-1
@@ -1,3 +1,19 @@
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use std::fs;
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use std::collections::HashMap;
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mod parsing;
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mod character;
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fn main() {
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println!("Hello, world!");
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let mut characters = HashMap::<String, character::Character>::new();
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let file_contents: String = fs::read_to_string("stories/story.ha").unwrap();
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// Split the file contents into tokens
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let tokens: Vec<&str> = file_contents
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.split_whitespace()
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.collect();
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// Run the parsing process
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match parsing::token_parse(&tokens, &mut characters) {
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Ok(()) => println!("Program exited successfully"),
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Err(error) => println!("{}", error),
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}
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}
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@@ -0,0 +1,85 @@
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use std::collections::HashMap;
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use crate::character;
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mod strings;
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// Parse the tokens in a file
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// Returns success or an error string
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pub fn token_parse(
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tokens: &Vec<&str>,
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mut characters: &mut HashMap::<String, character::Character>
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) -> ( Result<(),&'static str> )
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{
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let mut index: usize = 0;
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// Run an infinite loop
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loop
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{
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match tokens.get(index) {
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Some(token) => {
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// The instructions are related to characters
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if token.chars().next().unwrap() == '@'
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{
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let character_name: String = token.chars().skip(1).collect();
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// If the character doesn't exist, then create it
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if ! characters.contains_key(&character_name)
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{
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let new_character = character::Character::new(character_name.clone());
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characters.insert(character_name.clone(),new_character);
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}
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println!("Doing something with a character: {}", character_name);
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// The index is incremented to after the character's instructions
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index += match character_parse(index+1, &tokens, character_name, &mut characters)
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{
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Ok(increment) => increment,
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Err(error) => return Err(error),
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}
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}
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// Miscelleneous instructions
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if token.to_lowercase() == "end"
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{
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return Ok(());
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}
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index += 1;
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},
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None => return Err("File reached termination point")
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}
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}
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}
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// Parsing character related instructions
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fn character_parse(index: usize, tokens: &Vec<&str>, character_name: String, characters: &mut HashMap::<String, character::Character>) ->
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( Result<usize,&'static str> )
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{
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let mut sum_index: usize = index;
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loop
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{
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match tokens.get(sum_index)
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{
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Some(token) => {
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match token.to_lowercase().as_str()
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{
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// The character is saying something, so grab the text and pass it
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// to the client
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"says" =>
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{
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match strings::extract_quoted(&tokens[sum_index+1..])
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{
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Some(output_string) =>
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{
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println!("{}", output_string);
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return Ok(sum_index - index);
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},
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None => return Err("Unable to read string"),
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}
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},
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// Catch all condition, if the instruction is unrecognised as a
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// character command
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&_ => return Err("Invalid command"),
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}
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},
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None => return Err("File reached termination point")
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}
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sum_index += 1;
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}
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}
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Binary file not shown.
@@ -0,0 +1,25 @@
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pub fn extract_quoted(parts: &[&str]) -> Option<String> {
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let mut vec_string = Vec::new();
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for part in parts
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{
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println!("{}",part);
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if part.chars().next_back().unwrap() == '"'
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{
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vec_string.push(*part);
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let final_string: String = vec_string.join(" ");
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let final_string: String = final_string
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.chars()
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.skip(1)
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.take(
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final_string.chars()
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.count() - 2)
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.collect();
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return Some(final_string);
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}
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else
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{
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vec_string.push(*part);
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}
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}
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None
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}
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