feat: Implement basic interpreter and update documentation

README.md

@@ -2,8 +2,30 @@
 
 Benvenuto! Welcome to Trallalelo Lang, the most whimsical and brain-tickling programming language inspired by the finest Italian-flavored brainrot.
 
-## Documentation
+## Getting Started
 
-(Coming soon)
+To run a Trallalelo program, you need to have Rust installed. Then, you can use the following command:
+
+```bash
+cargo run -- <file_name>.tralla
+```
+
+## Syntax
+
+A Trallalelo program must start with `Tralalero Tralala` and end with `Bombardiro Crocodilo`.
+
+## Keywords
+
+### `Tralalero Tralala`
+
+This is the entry point of the program. It must be the first line of your code.
+
+### `Bombardiro Crocodilo`
+
+This is the exit point of the program. It must be the last line of your code.
+
+### `Matteeeo bambini gusini "<message>"`
+
+This command prints a message to the console. The message must be enclosed in double quotes.
 
 ## Ciao!

hello_world.tralla

@@ -0,0 +1,3 @@
+Tralalero Tralala
+Matteeeo bambini gusini "Hello, World!"
+Bombardiro Crocodilo

src/main.rs

@@ -1,3 +1,42 @@
+use std::env;
+use std::fs;
+
 fn main() {
-    println!("Hello, world!");
+    let args: Vec<String> = env::args().collect();
+    if args.len() < 2 {
+        println!("Please provide a file to run");
+        return;
+    }
+
+    let file_path = &args[1];
+    let content = fs::read_to_string(file_path).expect("Could not read the file");
+
+    let lines: Vec<&str> = content.lines().collect();
+
+    if lines.is_empty() || lines[0] != "Tralalero Tralala" {
+        println!("The program must start with 'Tralalero Tralala'");
+        return;
+    }
+
+    if lines.last() != Some(&"Bombardiro Crocodilo") {
+        println!("The program must end with 'Bombardiro Crocodilo'");
+        return;
+    }
+
+    for line in lines.iter().skip(1).rev().skip(1).rev() {
+        parse_and_execute(line);
+    }
+}
+
+fn parse_and_execute(line: &str) {
+    if line.starts_with("Matteeeo bambini gusini") {
+        let parts: Vec<&str> = line.splitn(2, ' ').collect();
+        if parts.len() > 1 {
+            let string_to_print = parts[1]
+                .trim_start_matches("bambini gusini")
+                .trim()
+                .trim_matches('"');
+            println!("{}", string_to_print);
+        }
+    }
 }