commit e39f94bd25d2d2a09f0918b8d719bdaacde62e91
Author: Félix Baylac-Jacqué <felix@alternativebit.fr>
Date:   Wed Nov 3 21:22:04 2021 +0100

    Reference read
    
    Perf:
    
    $ time target/release/fast-fantoir FANTOIR0721
    
    real    0m0,608s
    user    0m0,526s
    sys     0m0,081s
    
    $ time target/debug/fast-fantoir FANTOIR0721
    
    real    0m11,664s
    user    0m11,549s
    sys     0m0,113s
    
    I highly suspect the release build to optimize out the useless file
    read, partially explaining the *MASSIVE* perf difference between the
    release build and the debug one.
    
    This gives up a baseline speed order though. We should probably be
    able to stay below 1 minute to generate the DB.

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..ea8c4bf
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+/target
diff --git a/Cargo.lock b/Cargo.lock
new file mode 100644
index 0000000..2bc6de9
--- /dev/null
+++ b/Cargo.lock
@@ -0,0 +1,7 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "fast-fantoir"
+version = "0.1.0"
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..19a6c7c
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,8 @@
+[package]
+name = "fast-fantoir"
+version = "0.1.0"
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/shell.nix b/shell.nix
new file mode 100644
index 0000000..d075ab8
--- /dev/null
+++ b/shell.nix
@@ -0,0 +1,5 @@
+{ pkgs ? import <nixpkgs> {} }:
+
+pkgs.mkShell {
+  nativeBuildInputs = [ pkgs.rustc pkgs.cargo ];
+}
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..e5558e0
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,19 @@
+use std::fs::File;
+use std::io::{BufReader, BufRead};
+
+fn main() -> std::io::Result<()> {
+    let fantoir_path = std::env::args().nth(1).unwrap();
+    let file = match File::open(&fantoir_path) {
+        Err(err) => panic!("Cannot read file {}: {}", fantoir_path, err),
+        Ok(file) => file,
+    };
+    let reader = BufReader::new(file);
+
+    for line in reader.lines() {
+        match line {
+            Ok(_l) => (),
+            Err(err) => panic!("Cannot read line: {}", err),
+        }
+    };
+    Ok(())
+}
diff --git a/src/main.rs~ b/src/main.rs~
new file mode 100644
index 0000000..e7a11a9
--- /dev/null
+++ b/src/main.rs~
@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}