Switch indentation to tabs

rustfmt.toml

@@ -1 +1 @@
-tab_spaces=2
+hard_tabs=true

src/evaluator.rs

@@ -221,7 +221,9 @@ fn evaluate_node(ast_node: &AstNode) -> Result<Number, String> {
 				Factorial => {
 					let result = factorial(child_answer.value);
 					if result.is_nan() {
-            return Err("Can only perform factorial on integers from 0 to 1000".to_string());
+						return Err(
+							"Can only perform factorial on integers from 0 to 1000".to_string()
+						);
 					}
 					Ok(Number::new(result, child_answer.unit))
 				}

src/lib.rs

@@ -262,13 +262,17 @@ pub fn eval(
 					let eval_start = Instant::now();
 					match evaluator::evaluate(&ast) {
 						Ok(answer) => {
-              let eval_time = Instant::now().duration_since(eval_start).as_nanos() as f32;
+							let eval_time =
+								Instant::now().duration_since(eval_start).as_nanos() as f32;
 
 							if verbose {
 								println!("Evaluated value: {} {:?}", answer.value, answer.unit);
 								println!("\u{23f1}  {:.3}ms lexing", lex_time / 1000.0 / 1000.0);
 								println!("\u{23f1}  {:.3}ms parsing", parse_time / 1000.0 / 1000.0);
-                println!("\u{23f1}  {:.3}ms evaluation", eval_time / 1000.0 / 1000.0);
+								println!(
+									"\u{23f1}  {:.3}ms evaluation",
+									eval_time / 1000.0 / 1000.0
+								);
 							}
 
 							Ok(answer)

src/parser.rs

@@ -349,7 +349,8 @@ pub fn parse_level_7(tokens: &[Token], pos: usize) -> Result<(AstNode, usize), S
 				)),
 			}
 		}
-    Token::Operator(LeftParen) => parse_level_1(tokens, pos + 1).and_then(|(node, next_pos)| {
+		Token::Operator(LeftParen) => {
+			parse_level_1(tokens, pos + 1).and_then(|(node, next_pos)| {
 				if let Some(&Token::Operator(RightParen)) = tokens.get(next_pos) {
 					let mut paren_node = AstNode::new(Token::Paren);
 					paren_node.children.push(node);
@@ -361,7 +362,8 @@ pub fn parse_level_7(tokens: &[Token], pos: usize) -> Result<(AstNode, usize), S
 						tokens.get(next_pos)
 					))
 				}
-    }),
+			})
+		}
 		_ => Err(format!(
 			"Unexpected token {:?}, expected paren or number",
 			token