diff --git a/include/Lexer.hpp b/include/Lexer.hpp
index fabd3dc..1c1044e 100644
--- a/include/Lexer.hpp
+++ b/include/Lexer.hpp
@@ -204,7 +204,9 @@ namespace std {
             os<<" "<<v[v.size()-1];
         }else{
             os<<"}";
+            return os;
         }
+        os<<"}";
         return os;
     }
 }
\ No newline at end of file
diff --git a/include/Tools.hpp b/include/Tools.hpp
index a6da258..b5b892f 100644
--- a/include/Tools.hpp
+++ b/include/Tools.hpp
@@ -6,14 +6,15 @@
 #include <utility>
 #include <variant>
 #include <vector>
+#include<fstream>
 
 namespace ztl{
     template<class ...Ts>
     void logger(Ts&&...v){
         #ifndef NDEBUG
-        std::cout<<"log[";
+        std::cout<<"log: ";
         (std::cout<<...<<v);
-        std::cout<<"]\n";
+        std::cout<<"\n";
         #endif
     }
 
@@ -76,5 +77,22 @@ namespace ztl{
         }
     };
 
+    inline Result<std::string> get_argv(size_t idx){
+        if(idx>=__argc){
+            return Result<std::string>(Err("argv's index out of range"));
+        }else{
+            return Result<std::string>(std::string(__argv[idx]));
+        }
+    }
+
+    inline Result<std::string> get_string_from_file(const std::string &file_path){
+        std::ifstream file(file_path);
+        if (!file) {
+            return Result<std::string>(Err("Could not open file: " + file_path));
+        }
+        std::string content((std::istreambuf_iterator<char>(file)),
+                            std::istreambuf_iterator<char>());
+        return Result<std::string>(content);
+    }
 }
 
diff --git a/src/main.cpp b/src/main.cpp
index 6ce65bd..63c4a7d 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,6 +1,11 @@
 #include "Lexer.hpp"
-#include <iostream>
+#include "Tools.hpp"
+#include <string>
 
 int main(){
-    
+    std::string content = ztl::get_string_from_file(ztl::get_argv(1).unwrap()).unwrap();
+    ztl::logger("Reading file: ", ztl::get_argv(1).unwrap());
+    ztl::logger("File content:\n", content);
+    std::vector<ztl::lexer::Token> tokens = ztl::lexer::lexer(content);
+    ztl::logger("Tokens parsed:\n", tokens);
 }
\ No newline at end of file
diff --git a/tests/main.ztl b/tests/main.ztl
new file mode 100644
index 0000000..aabbabe
--- /dev/null
+++ b/tests/main.ztl
@@ -0,0 +1 @@
+print("hello world");
\ No newline at end of file