strings in variables can now be received by get_string_token

and inputs can be directly assigned to a variable

server/Cargo.lock

@@ -457,7 +457,7 @@ dependencies = [
 
 [[package]]
 name = "happening-server"
-version = "0.0.2"
+version = "0.0.3"
 dependencies = [
  "env_logger",
  "log",

server/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "happening-server"
-version = "0.0.2"
+version = "0.0.3"
 edition = "2024"
 license = "GPL-3"
 repository = "https://git.javalsai.tuxcord.net/deadvey/happening/"

server/src/api.rs

@@ -131,6 +131,7 @@ pub fn modify_data // TODO rename
 		character,
 		choices,
 	};
+	debug!("{new_data:?}");
 	queue.push_back(new_data);
 	drop(queue);
 }

server/src/main.rs

@@ -108,9 +108,18 @@ async fn main()
 			error!("Unable to read story file to string: {err}");
 			exit(14);
 		});
+
+	// Tokenise the file
 	let (tokens, labels) = tokenise::tokenise(&file_contents)
 		.unwrap_or_exit("Unable to tokenise data", 15);
-	debug!("{tokens:?}\n{labels:?}");
+	// TESTING
+	//debug!("{tokens:?}\n{labels:?}");
+	for (index,token) in tokens.iter().enumerate() 
+	{
+		debug!("{index}: {token:?}");
+	}
+
+	// Run the syntactic parser
 	let characters_clone2 = Arc::clone(&characters);
 	let happening_stack2 = Arc::clone(&happening_stack);
 	// Run the parsing process for the DSL 

server/src/parsing.rs

@@ -1,4 +1,3 @@
-use std::collections::HashMap;
 use crate::
 {
 	// Internal code
@@ -11,6 +10,7 @@ use crate::
 	Arc,
 	Mutex,
 	VecDeque,
+	HashMap,
 	info,
 	debug,
 	warn,
@@ -41,10 +41,11 @@ pub fn token_parse(
 		// Get the next token
 		match tokens.get(index)
 		{
+			// Keyword, eg IF, CHOICE or GOTO
 			Some(tokenise::Token::Keyword(token)) =>
 			{
 				if token.to_lowercase().as_str() == "end" { return Ok(()); }
-				index = keyword_parse::keyword_parse(tokens, token, index, happening_queue, labels, rx)?;
+				index = keyword_parse::keyword_parse(tokens, token, index, happening_queue, labels, &mut variables, rx)?;
 			},
 			// Ignore closing braces and jump over opening brace blocks
 			Some(tokenise::Token::Bracket((bracket,new_index))) =>
@@ -59,7 +60,7 @@ pub fn token_parse(
 			// Handle a character
 			Some(tokenise::Token::Character(character_name)) =>
 			{
-				index = match character_parse::character_parse(index+1,tokens,character_name.clone(),characters,happening_queue)
+				index = match character_parse::character_parse(index+1,tokens,character_name.clone(),characters,happening_queue,&variables)
 				{
 					Ok(increment) => increment,
 					Err((err,increment)) =>
@@ -72,9 +73,9 @@ pub fn token_parse(
 			// Identifier
 			Some(tokenise::Token::Identifier(name)) =>
 			{
-				index = match identifier_parse::identifier_parse(index+1,name,tokens,&mut variables)
+				index = match identifier_parse::identifier_parse(index+1,name,tokens,&mut variables,rx,happening_queue)
 				{
-					Ok(increment) => increment,
+					Ok((increment,_)) => increment,
 					Err((err,increment)) =>
 					{
 						warn!("{err}");
@@ -82,9 +83,9 @@ pub fn token_parse(
 					},
 				};
 			}
-			Some(_) =>
+			Some(tok) =>
 			{
-				warn!("Unexpected token");
+				warn!("Unexpected token, at index {index}, expected character, keyword or identifier, got {tok:?}");
 				index += 1;
 			},
 			None => return Err("File unexpectedly reached termination point".to_string()),

server/src/parsing/character_parse.rs

@@ -25,6 +25,7 @@ pub fn character_parse
 	character_name: String,
 	characters: &Arc<Mutex<HashMap::<String, character::Character>>>,
 	happening_queue: &Arc<Mutex<VecDeque<api::DataToSend>>>,
+	variables: &HashMap<String, tokenise::Value>,
 ) -> Result<usize,(String,usize)>
 {
 	let mut sum_index: usize = index;
@@ -45,7 +46,7 @@ pub fn character_parse
 		{
 			info!("SAYS command with character {character_name}");
 			sum_index += 1;
-			let output = tokenise::get_string_token(tokens, sum_index)
+			let output = tokenise::get_string_token(tokens, sum_index, variables)
 				.map_err(|err| (err, sum_index))?;
 			debug!("Saying {output}");
 			api::modify_data(happening_queue, "output".to_string(), output, character_name, vec![]);
@@ -58,7 +59,7 @@ pub fn character_parse
 			let feature = tokenise::get_keyword_token(tokens, sum_index)
 				.map_err(|err| (err, sum_index))?;
 			sum_index += 1;
-			let string = tokenise::get_string_token(tokens, sum_index)
+			let string = tokenise::get_string_token(tokens, sum_index,variables)
 				.map_err(|err| (err, sum_index))?;
 			info!("CHANGE command with character {character_name} feature {feature}");
 			let mut characters = characters.lock().unwrap_or_exit("Character Mutex was poisoned",3);

server/src/parsing/identifier_parse.rs

@@ -1,17 +1,18 @@
 use crate::
 {
 	// Internal code
-	character,
 	tokenise,
-	UnwrapOrExit,
-	parsing,
+	api,
 	//Libs
 	HashMap,
+	Arc,
+	Mutex,
 	VecDeque,
-	info,
 	warn,
 	debug,
+	mpsc::Receiver,
 };
+use super::keyword_parse;
 
 #[allow(unused_variables)]
 pub fn identifier_parse
@@ -20,53 +21,146 @@ pub fn identifier_parse
 	identifier: &String,
 	tokens: &[tokenise::Token],
 	variables: &mut HashMap<String, tokenise::Value>,
-) -> Result<usize,(String,usize)>
+	rx: &Receiver<(usize,String)>,
+	happening_queue: &Arc<Mutex<VecDeque<api::DataToSend>>>,
+) -> Result<(usize,bool),(String,usize)>
 {
 	let mut sum_index: usize = index;
-	if ! variables.contains_key(identifier)
-	{
-		variables.insert(identifier.to_string(), tokenise::Value::Null);
-	}
+	let current = variables
+		.entry(identifier.clone())
+		.or_insert(tokenise::Value::Null)
+		.clone();
 	let operator = tokenise::get_operator_token(tokens, sum_index)
 		.map_err(|err| (err, sum_index))?;
 	sum_index += 1;
-	let value = tokenise::get_value_token(tokens, sum_index)
+	let result: bool = match tokenise::get_value_token(tokens, sum_index)
+	{
+		// An value that can be directly assigned to or compared against the variable
+		Ok(value) =>
+		{
+			sum_index += 1;
+			operator_match(&current,value,operator,identifier,variables)
+		},
+		// Another thing like a choice or an input
+		Err(_) =>
+		{
+			if operator != tokenise::Operator::Assignment // Only assignment is valid here
+			{
+				return Err((format!("Unexpected operator: {operator:?} at index {}",sum_index-1),sum_index + 1))
+			};
+			let keyword = tokenise::get_keyword_token(tokens,sum_index)
 				.map_err(|err| (err,sum_index))?;
+			match keyword.to_lowercase().as_str()
+			{
+				"choice" =>
+				{
+					let choice: String;
+					(sum_index, choice) = keyword_parse::choice_parse(tokens, index+1, happening_queue,rx,variables)
+						.map_err(|err| (err,sum_index+1))?;
+					variables.insert(identifier.to_owned(), tokenise::Value::String(choice));
+				},
+				"input" =>
+				{
+					api::modify_data(happening_queue, "input".to_string(), String::new(), String::new(), Vec::new());
+					let input = match rx.recv()
+					{
+						Ok((_,input)) => input,
+						Err(err) =>
+						{
+							warn!("Error receiving input from client, defaulting to choice \"\" {err}");
+							"".to_string()
+						}
+					};
+					variables.insert(identifier.to_owned(), tokenise::Value::String(input));
+				},
+				_ =>
+				{
+					warn!("Unexpected keyword {keyword}");
+				},
+			}
+			false
+		},
+	};
+	debug!("{variables:?}");
+	Ok((sum_index,result))
+}
+
+fn operator_match
+(
+	current: &tokenise::Value,
+	value: tokenise::Value,
+	operator: tokenise::Operator,
+	identifier: &String,
+	variables: &mut HashMap<String, tokenise::Value>
+)
+-> bool
+{
+	// Operator match box
 	match operator
 	{
 		// Changing a value
 		tokenise::Operator::Assignment =>
 		{
-			variables.insert(identifier.to_string(), value);
+			variables.insert(identifier.to_owned(), value);
 		} ,
 		tokenise::Operator::Add =>
 		{
-			let current = variables.get(identifier).unwrap();
 			let result: tokenise::Value = match (value.clone(), current)
 			{
 				(tokenise::Value::Integer(int1),tokenise::Value::Integer(int2)) => tokenise::Value::Integer(int1 + int2),
 				(tokenise::Value::String(str1),tokenise::Value::String(str2)) => tokenise::Value::String(format!("{str1}{str2}")),
-				_ => value.clone(), // otherwise invalid
+				_ => value, // otherwise invalid
 
 			};
-			variables.insert(identifier.to_string(), result);
+			variables.insert(identifier.to_owned(), result);
 		},
 		tokenise::Operator::Sub =>
 		{
-			let current = variables.get(identifier).unwrap();
 			let result: tokenise::Value = match (value.clone(), current)
 			{
 				(tokenise::Value::Integer(int1),tokenise::Value::Integer(int2)) => tokenise::Value::Integer(int2 - int1),
-				_ => value.clone(), // otherwise invalid
+				_ => value, // otherwise invalid
 
 			};
-			// TODO comparisons :DDD
-			variables.insert(identifier.to_string(), result);
+			variables.insert(identifier.to_owned(), result);
 		},
-		_ => (),
+		// Comparisons, return a boolean
+		tokenise::Operator::Comparison(comp) =>
+		{
+			let result = match (current, &value)
+			{
+				// Integer
+				(tokenise::Value::Integer(current), tokenise::Value::Integer(comparing)) =>
+				{
+					match comp
+					{
+						tokenise::Comparison::Equate =>			current == comparing,
+						tokenise::Comparison::Greater =>		current > comparing,
+						tokenise::Comparison::Less =>			current < comparing,
+						tokenise::Comparison::GreaterOrEqual =>	current >= comparing,
+						tokenise::Comparison::LessOrEqual =>	current <= comparing,
 					}
-	debug!("{variables:?}");
-	sum_index += 1;
-	Ok(sum_index)
+				},
+				// String
+				(tokenise::Value::String(current), tokenise::Value::String(comparing)) =>
+				{
+					match comp
+					{
+						tokenise::Comparison::Equate =>			current == comparing,
+						tokenise::Comparison::Greater =>		current > comparing,
+						tokenise::Comparison::Less =>			current < comparing,
+						tokenise::Comparison::GreaterOrEqual =>	current >= comparing,
+						tokenise::Comparison::LessOrEqual =>	current <= comparing,
+					}
+				},
+				_ => {
+					warn!("Invalid comparison of {current:?} and {value:?}, evaluating false");
+					false
+				},
+			};
+			debug!("Comparison {current:?} comp {value:?} evaluates to {result}");
+			return result;
+		}
+	}
+	true
 }
-

server/src/parsing/keyword_parse.rs

@@ -12,6 +12,7 @@ use crate::
 	info,
 	mpsc::Receiver,
 };
+use super::identifier_parse;
 
 pub fn keyword_parse(
 	tokens: &[tokenise::Token],
@@ -19,6 +20,7 @@ pub fn keyword_parse(
 	mut index: usize,
 	happening_queue: &Arc<Mutex<VecDeque<api::DataToSend>>>,
 	labels: &HashMap<String, usize>,
+	variables: &mut HashMap<String, tokenise::Value>,
 	rx: &Receiver<(usize,String)>,
 )
 -> Result<usize, String>
@@ -28,18 +30,54 @@ pub fn keyword_parse(
 	{
 		"choice" =>
 		{
-			let choice_indeces = choice_parse(tokens, index, happening_queue)?;
-			debug!("{choice_indeces:?}");
-			let choice = match rx.recv()
+			(index,_) = choice_parse(tokens, index, happening_queue, rx,variables)?;
+		},
+		"if" =>
 		{
-				Ok((choice,_)) => choice_indeces[choice],
-				Err(err) =>
+			// TODO can this go in a function?
+			let mut keyword = "if".to_string();
+			while keyword == "if" || keyword == "elif" || keyword == "else" // TODO less beefy??
 			{
-					warn!("Error receiving choice from client, defaulting to choice 0 {err}");
-					0
+				index += 1;
+				let mut result: bool = true;
+				if keyword != "else"
+				{
+					let identifier = tokenise::get_identifier_token(tokens, index)?;
+					(index,result) = match identifier_parse::identifier_parse(index+1, &identifier, tokens, variables,rx,happening_queue)
+					{
+						Ok((increment, result)) => (increment,result),
+						Err((err,increment)) =>
+						{
+							warn!("{err}");
+							(increment,false)
+						}
+					}
+				}
+				if result { index += 1; break; }
+				index = tokenise::get_closing_index(tokens,index)?;
+				index += 1;
+				keyword = match tokenise::get_keyword_token(tokens,index)
+				{
+					Ok(keyword) => keyword,
+					Err(_) => break,
+				}
+			}
+		},
+		"else" =>
+		{
+			index += 1;
+			index = tokenise::get_closing_index(tokens, index)?;
+		},
+		"elif" =>
+		{
+			loop
+			{
+				index += 1;
+				let Ok(new_index) = tokenise::get_closing_index(tokens, index)
+				else { continue; };
+				index = new_index;
+				break
 			}
-			};
-			index = choice;
 		},
 		"or" =>
 		{
@@ -70,8 +108,15 @@ pub fn keyword_parse(
 	Ok(index)
 }
 
-fn choice_parse(tokens: &[tokenise::Token], mut index: usize, happening_queue: &Arc<Mutex<VecDeque<api::DataToSend>>>,)
--> Result<Vec<usize>, String>
+pub fn choice_parse
+(
+	tokens: &[tokenise::Token],
+	mut index: usize,
+	happening_queue: &Arc<Mutex<VecDeque<api::DataToSend>>>,
+	rx: &Receiver<(usize,String)>,
+	variables: &HashMap<String,tokenise::Value>,
+)
+-> Result<(usize,String), String>
 {
 	let mut next_token: String = "or".to_string();
 	let mut choices: Vec<String> = Vec::new();
@@ -81,7 +126,7 @@ fn choice_parse(tokens: &[tokenise::Token], mut index: usize, happening_queue: &
 		index += 1;
 		choices.push
 		(
-			tokenise::get_string_token(tokens, index)?
+			tokenise::get_string_token(tokens, index,variables)?
 		);
 		index += 1;
 		choice_indeces.push(index+1);
@@ -96,6 +141,16 @@ fn choice_parse(tokens: &[tokenise::Token], mut index: usize, happening_queue: &
 			Err(_) => break,
 		}
 	};
-	api::modify_data(happening_queue, "choice".to_string(), String::new(), String::new(), choices);
-	Ok(choice_indeces)
+	api::modify_data(happening_queue, "choice".to_string(), String::new(), String::new(), choices.clone());
+	debug!("{choice_indeces:?}");
+	let choice = match rx.recv()
+	{
+		Ok((choice,_)) => choice,
+		Err(err) =>
+		{
+			warn!("Error receiving choice from client, defaulting to choice 0 {err}");
+			0
+		}
+	};
+	Ok((choice_indeces[choice],choices[choice].clone()))
 }

server/src/tokenise.rs

@@ -13,7 +13,7 @@ pub enum Token
 	Bracket((Bracket,usize)), // Stores the index of the matching deliminator
 	Character(String),
 }
-#[derive(Debug,Clone)]
+#[derive(Debug,Clone,PartialEq,Eq)]
 pub enum Value
 {
 	String(String),
@@ -28,43 +28,35 @@ pub enum Bracket
 	Closing,
 }
 
-#[derive(Debug, Clone)]
+#[derive(Debug, Clone,PartialEq)]
 pub enum Operator
 {
 	// Changing a value
 	Assignment,
 	Add,
 	Sub,
+	Comparison(Comparison),
+}
+
 // Comparing a value
-	Comparison,
+#[derive(Debug,Clone,PartialEq)]
+pub enum Comparison
+{
+	Equate,
 	Greater,
 	Less,
 	GreaterOrEqual,
 	LessOrEqual,
 }
 
+
+// TODO error reporting for all of these
 pub fn get_operator_token(tokens: &[Token], index: usize)
 -> Result<Operator, String>
 {
 	match tokens.get(index) {
 		Some(Token::Operator(op)) => Ok(op.clone()),
-		Some(_) => Err("Unexpected token".to_string()),
-		None => Err("File unexpectedly reached termination point".to_string()),
-	}
-}
-pub fn get_string_token(tokens: &[Token], index: usize)
--> Result<String, String>
-{
-	match tokens.get(index) {
-		Some(Token::Value(val)) =>
-		{
-			match val
-			{
-				Value::String(s) => Ok(s.clone()),
-				_ => Err("Unexpected value type".to_string()),
-			}
-		},
-		Some(_) => Err("Unexpected token".to_string()),
+		Some(tok) => Err(format!("Unexpected token at index {index}, expected operator, got {tok:?}")),
 		None => Err("File unexpectedly reached termination point".to_string()),
 	}
 }
@@ -73,7 +65,7 @@ pub fn get_keyword_token(tokens: &[Token], index: usize)
 {
 	match tokens.get(index) {
 		Some(Token::Keyword(s)) => Ok(s.clone()),
-		Some(_) => Err("Unexpected token".to_string()),
+		Some(tok) => Err(format!("Unexpected token at index {index}, expected keyword, got {tok:?}")),
 		None => Err("File unexpectedly reached termination point".to_string()),
 	}
 }
@@ -82,7 +74,7 @@ pub fn get_closing_index(tokens: &[Token], index: usize)
 {
 	match tokens.get(index) {
 		Some(Token::Bracket((_, index))) => Ok(*index), // TODO check for closing
-		Some(_) => Err("Unexpected token".to_string()),
+		Some(tok) => Err(format!("Unexpected token at index {index}, expected opening brace, got {tok:?}")),
 		None => Err("File unexpectedly reached termination point".to_string()),
 	}
 }
@@ -91,7 +83,44 @@ pub fn get_value_token(tokens: &[Token], index: usize)
 {
 	match tokens.get(index) {
 		Some(Token::Value(val)) => Ok(val.clone()),
-		Some(_) => Err("Unexpected token".to_string()),
+		Some(tok) => Err(format!("Unexpected token at index {index}, expected value (int, string or boolean), got {tok:?}")),
+		None => Err("File unexpectedly reached termination point".to_string()),
+	}
+}
+pub fn get_identifier_token(tokens: &[Token], index: usize)
+-> Result<String, String>
+{
+	match tokens.get(index) {
+		Some(Token::Identifier(s)) => Ok(s.clone()),
+		Some(tok) => Err(format!("Unexpected token at index {index}, expected identifier, got {tok:?}")),
+		None => Err("File unexpectedly reached termination point".to_string()),
+	}
+}
+pub fn get_string_token(tokens: &[Token], index: usize, variables: &HashMap<String, Value>)
+-> Result<String, String>
+{
+	match tokens.get(index) {
+		// Either get string directly
+		Some(Token::Value(val)) =>
+		{
+			match val
+			{
+				Value::String(s) => Ok(s.clone()),
+				_ => Err("Unexpected value type".to_string()),
+			}
+		},
+		// Or get the string that the identifier references
+		Some(Token::Identifier(iden)) =>
+		{
+			let val = variables.get(iden)
+				.ok_or(format!("Variable {iden} not initialised"))?;
+			match val
+			{
+				Value::String(s) => Ok(s.clone()),
+				_ => Err("Unexpected value type".to_string()),
+			}
+		},
+		Some(tok) => Err(format!("Unexpected token at index {index}, expected string value, got {tok:?}")),
 		None => Err("File unexpectedly reached termination point".to_string()),
 	}
 }
@@ -118,22 +147,18 @@ pub fn tokenise(file_contents: &str)
 			"=" => Some(Operator::Assignment),
 			"+" => Some(Operator::Add),
 			"-" => Some(Operator::Sub),
-			"==" => Some(Operator::Comparison),
-			">" => Some(Operator::Greater),
-			"<" => Some(Operator::Less),
-			">=" => Some(Operator::GreaterOrEqual),
-			"<=" => Some(Operator::LessOrEqual),
+			"==" => Some(Operator::Comparison(Comparison::Equate)),
+			">" => Some(Operator::Comparison(Comparison::Greater)),
+			"<" => Some(Operator::Comparison(Comparison::Less)),
+			">=" => Some(Operator::Comparison(Comparison::GreaterOrEqual)),
+			"<=" => Some(Operator::Comparison(Comparison::LessOrEqual)),
 			_ => None,
 		};
-		match op
-		{
-			Some(op) =>
+		if let Some(op) = op
 		{
 			tokenised_data.push(Token::Operator(op));
 			index += 1;
 			continue // skip the rest of this loop
-			},
-			None => (),
 		}
 		// Characters
 		if item.starts_with('@')
@@ -151,18 +176,26 @@ pub fn tokenise(file_contents: &str)
 			item = new_item;
 			tokenised_data.push(Token::Value(Value::String(item)));
 		}
+		else if let Ok(value) = item.parse::<i64>()
+		{
+			tokenised_data.push(Token::Value(Value::Integer(value))); // unwrap is fine here because I checked
+		}
+		else if item == "true"
+		{
+			tokenised_data.push(Token::Value(Value::Bool(true)));
+		}
+		else if item == "false"
+		{
+			tokenised_data.push(Token::Value(Value::Bool(false)));
+		}
 		// variable/identifier
-		else if item.starts_with("$")
+		else if item.starts_with('$')
 		{
 			let mut chars = item.chars();
 			chars.next();
 			tokenised_data.push(Token::Identifier(chars.as_str().to_string()));
 		}
 		// Integer
-		else if item.parse::<i64>().is_ok()
-		{
-			tokenised_data.push(Token::Value(Value::Integer(item.parse::<i64>().unwrap()))); // unwrap is fine here because I checked
-		}
 		// Labels
 		else if item.ends_with(':')
 		{

stories/characters.json

@@ -10,7 +10,7 @@
 		"pronoun_deppos": "His",
 		"pronoun_indpos": "His",
 		"pronoun_reflex": "Himself",
-		"head_shape": "",
+		"head_shape": "normal-male",
 		"hair_style": "",
 		"torso_shape": "",
 		"arm_shape": "",

stories/story.ha

@@ -1,10 +1,20 @@
-@tim says "hello world, it's a good day"
-@tim change name "Timothy Fineshooter"
+$name = input
+@tim says "hello"
+@tim says $name
 $x = 3
 $x + 1
-$x - 2
+if $x == 4 {
+	@tim says "5"
+}
+elif $x < 5 {
+
+	@tim says "<5"
+}
+else {
+	@tim says "whar"
+}
 label:
-choice "choice numero uno" {
+$choice_string = choice "choice numero uno" {
 	@tim says "super sad"
 }
 or "choice numero duo" {

test-client/main.py

@@ -44,6 +44,12 @@ def choice(choices):
 		print("Invalid choice, defaulting to 0")
 	requests.post(api_url, json=choice);
 
+def get_input():
+	api_url = "http://localhost:20264/input"
+	input_string = input()
+	requests.post(api_url, json=input_string);
+	
+
 # Character outputs text to the user
 def output(character, text):
 	print(character["name"], "says")