Add "call"

src/execute.rs

@@ -145,6 +145,10 @@ pub fn execute(stack: &mut Stack, mut origin_stack: Option<&mut Stack>, mod_name
                 let arg = instruction.arg.clone();
                 instructions::modules::exec(stack, arg, mod_name.clone())
             },
+            "call" => {
+                let arg = instruction.arg.clone();
+                instructions::modules::call(stack, arg)
+            },
             "native" => {
                 let arg = instruction.arg.clone();
                 instructions::native::native(stack, arg)

src/instructions/modules.rs

@@ -34,3 +34,27 @@ pub fn exec(mut stack: &mut Stack, arg: String, mod_name: String) {
         stack.memory.push(*item);
     }
 }
+
+pub fn call(mut stack: &mut Stack, mod_name: String) {
+    let len: u16 = stack.memory.pop();
+    let mut rev: String = String::new();
+    for _i in 0..len {
+        rev.push(stack.memory.pop() as u8 as char);
+    }
+    let tocall: String = rev.chars().rev().collect::<String>();
+
+    if mod_name == tocall {
+        eprintln!("{}", RunError::ExecuteItself(tocall.to_string()));
+        std::process::exit(2);
+    }
+
+    let lines = fs::read_to_string(&tocall).expect(&format!("{}", RunError::FailToReadFile));
+    let mut temp_stack = Stack::new(stack.memory.size());
+
+    parse(&mut temp_stack, &lines);
+    execute(&mut temp_stack, Some(&mut stack), tocall.clone());
+
+    for item in temp_stack.memory.iter() {
+        stack.memory.push(*item);
+    }
+}