added comment and newline cleaning

src/main.rs

@@ -10,7 +10,7 @@ fn main() {
     println!("{:?}", preprocessor::preprocess(file));
 }
 
-fn parse_and_interpret(code: String) {
+//fn parse_and_interpret(code: String) {
 
-}
+//}
 

src/preprocessor.rs

@@ -1,5 +1,28 @@
-pub fn preprocess(raw_code: String) -> String {
-    let lines = raw_code.split(' ');
-    for &line in lines {
+use lazy_static::lazy_static;
+use fancy_regex::Regex;
+
+pub fn preprocess(raw_code: String) {
+    lazy_static! {
+        static ref COMMENT_RE: Regex = Regex::new(r"(\]\].*?\[\[|&&.*\n|``(.|\n)*?´´)").unwrap();
     }
+
+    let code = COMMENT_RE.replace_all(&raw_code, "");
+    let code = remove_empty_lines(code.to_string());
+    println!("{}", &code)
 }
+
+pub fn remove_empty_lines(text: String) -> String {
+    let text: Vec<&str> = text.split('\n').collect();
+
+    let mut out = String::new();
+    for line in text {
+        if !line.trim().is_empty() {
+            out += line;
+            out.push('\n');
+        }
+    }
+
+    out
+}
+
+