Mitigate printing bottleneck (Issue#2)

src/interpreter/functions.rs

@@ -8,6 +8,7 @@ use super::utils::path::Path;
 use super::variables::Variables;
 use super::Literal;
 use super::Str;
+use std::io::{self, Write};
 
 type Args = Vec<String>;
 
@@ -58,9 +59,12 @@ impl Functions for super::Interpreter {
 
     // Functions definitions
     fn r#print(&self, args: &Args) {
-        // mitigate printing bottleneck by using only 1 print
-        // context: i used to have a for loop
-        println!("{}", args.join("\n"));
+        // mitigate printing bottleneck by locking
+        // the stdout and creating a write buffer
+        let stdout = io::stdout(); // get the global stdout entity
+        let mut handle = io::BufWriter::new(stdout.lock());
+        writeln!(handle, "{}", args.join("\n")).unwrap();
+        handle.flush().unwrap();
     }
 
     fn r#create(&self, args: &Args) {

src/interpreter/mod.rs

@@ -37,8 +37,6 @@ impl Interpreter {
             __directory__: dir,
             __recursive__: recursive,
             __ast__: ast,
-
-            // variables needed for runtime
             __file__: String::from(""),
         }
     }

src/main.rs

@@ -13,6 +13,7 @@ mod parser;
 
 fn main() {
     let cli_args: cli::Cli = cli::get_cli_args();
+
     println_on_debug!(
         "\nVoila v{}, DEBUG ENABLED\n
 Debug is always enabled on development versions.
@@ -26,7 +27,6 @@ For more information see the README.\n
     );
 
     let tokens: Vec<lexer::Token> = lexer::lex(&cli_args.source);
-
     let ast: parser::ast::AST = parser::parse(tokens);
     let interpreter = interpreter::run(ast, cli_args.dir, cli_args.recursive);
     block_on(interpreter); // wait interpreter to finish