Fix build

asklyphe-frontend/src/math.rs

@@ -20,13 +20,19 @@ pub fn calculate(query: &str) -> Option<Calculation> {
 #[derive(Debug)]
 enum Token {
 	Op(Op),
-	Atom(f64),
+	Atom(Atom),
 /*	Number(f64),
 	Func(Func),*/
 }
 
 #[derive(Debug)]
 enum Op {
+	BinOp(BinOp),
+	Func(Func), // A function is an Op that takes whatever the next thing is and binds it, either the next number or whatever is in parens
+}
+
+#[derive(Debug)]
+enum BinOp {
 	Add,
 	Subtract,
 	Multiply,
@@ -34,12 +40,12 @@ enum Op {
 	Exponent,
 	LParen,
 	RParen,
-	Func(Func)
 }
 
 #[derive(Debug)]
 enum Atom {
-	Number(f64),
+	Number(f64), // TODO: use the unlimited precision floats library instead
+	Const(Const),
 }
 
 #[derive(Debug)]
@@ -58,6 +64,12 @@ enum Func {
 	SquareRoot,
 }
 
+#[derive(Debug)]
+enum Const {
+	Pi,
+	E,
+}
+
 #[derive(Debug)]
 enum LexErr {
 	Eof,
@@ -75,7 +87,7 @@ struct Lexer<'a> {
 // TODO: refactor with iterator that returns Option(Token) where one token option is Eof (or a enum of Token(Token) and Eof, or just Option(Option(Token)))
 impl Lexer<'_> {
 
-	fn new(data: &str) -> Lexer { Lexer {data, data_ptr: data, idx: 0} }
+	fn new(data: &str) -> Lexer<'_> { Lexer {data, data_ptr: data, idx: 0} }
 	
 	fn next(&mut self) -> Result<Token, LexErr> {
 		match self.data.chars().nth(self.idx) {
@@ -86,22 +98,22 @@ impl Lexer<'_> {
 				// TODO: make more efficient
 				self.data_ptr = &self.data[self.idx..];
 				match val {
-					'+' => Ok(Token::Add),
-					'-' => Ok(Token::Subtract),
-					'×' | '*' => Ok(Token::Multiply),
-					'÷' | '/' => Ok(Token::Divide),
-					'^' => Ok(Token::Exponent),
-					'(' => Ok(Token::LParen),
-					')' => Ok(Token::RParen),
+					'+' => Ok(Token::Op(Op::BinOp(BinOp::Add))),
+					'-' => Ok(Token::Op(Op::BinOp(BinOp::Subtract))),
+					'×' | '*' => Ok(Token::Op(Op::BinOp(BinOp::Multiply))),
+					'÷' | '/' => Ok(Token::Op(Op::BinOp(BinOp::Divide))),
+					'^' => Ok(Token::Op(Op::BinOp(BinOp::Exponent))),
+					'(' => Ok(Token::Op(Op::BinOp(BinOp::LParen))),
+					')' => Ok(Token::Op(Op::BinOp(BinOp::RParen))),
 					_ if val.is_whitespace() => self.next(),
-					// TODO: parse - as part of number so I can do '1 + -1' and similar
+					// TODO: maybe parse '-' as part of number so I can do '1 + -1' and similar
 					_ if val.is_digit(10) => {
 						let start = self.idx - 1;
 
 						self.data_ptr.chars().take_while(|c| c.is_digit(10)).for_each(|_| self.idx += 1);//.next().unwrap_or(' ').is_digit(10) {self.idx += 1;}
 
 						match self.data[start..self.idx].parse() {
-							Ok(val) => Ok(Token::Number(val)),
+							Ok(val) => Ok(Token::Atom(Atom::Number(val))),
 							Err(e) => Err(LexErr::Invalid),
 						}
 					},
@@ -149,8 +161,8 @@ impl Parser<'_> {
 	}
 
 	fn parse_expr(&mut self, min_bp: f64) -> Result<Expr, ParseErr> {
-		while let Ok(val) = self.lexer.next() {debug!("token: {:?}", )}
-		match self.lex.next().ok()? {
+		while let Ok(val) = self.lex.next() {debug!("token: {:?}", val)}
+		match self.lex.next().err() {
 			
 			_ => return Err(ParseErr::Invalid),
 		}