Add LICENSE (#19)

Author: TitanNano

.github/workflows/ci.yaml

@@ -85,4 +85,23 @@ jobs:
           cache-on-failure: true
       - name: Tests
         run: |
-          cargo test
+          cargo test
+
+  license:
+    runs-on: "ubuntu-22.04"
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Install ENV
+        run: |
+          eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
+          brew install nushell
+
+      - name: Check License Headers
+        run: |
+          eval "$(/home/linuxbrew/.linuxbrew/bin/brew shellenv)"
+          ./license_header.nu
+          git diff
+          test $(git diff | wc -l) -eq 0

LICENSE

@@ -1,3 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
 use darling::{ast::Data, util, FromAttributes, FromDeriveInput, FromField, FromMeta};
 use proc_macro2::{Span, TokenStream};
 use quote::quote;

derive/src/attribute_ops.rs

@@ -1,3 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
 use proc_macro2::TokenStream;
 use quote::{quote, quote_spanned, ToTokens};
 use syn::{parse_macro_input, spanned::Spanned, FnArg, ImplItem, ItemImpl, ReturnType, Type};

derive/src/impl_attribute.rs

@@ -1,3 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
 mod attribute_ops;
 mod impl_attribute;
 mod type_paths;

derive/src/lib.rs

@@ -1,3 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
 use proc_macro2::TokenStream;
 use quote::quote;
 

derive/src/type_paths.rs

@@ -0,0 +1,32 @@
+#!/usr/bin/env nu
+
+let source_root = $env.FILE_PWD
+
+let license_notice = "/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+" | lines
+
+let license_length = $license_notice | length
+
+def read_file [path: string]: nothing -> list<string> {
+  open --raw $path | lines
+}
+
+def lines []: string -> list<string> {
+  split row "\n"
+}
+
+def main []: nothing -> nothing {
+  for file in (ls $"($source_root)/**/*.rs") {
+    let current_header = read_file $file.name | first $license_length
+   
+    if $current_header == $license_notice {
+      continue
+    }
+
+    read_file $file.name | prepend $license_notice | str join "\n" |  save -f $file.name
+  }
+}

license_header.nu

@@ -1,3 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
 pub trait Apply: Sized {
     fn apply<F: FnOnce(&mut Self)>(mut self, cb: F) -> Self {
         cb(&mut self);

rust-script/src/apply.rs

@@ -1,3 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
 mod apply;
 mod script_registry;
 mod shared;

rust-script/src/lib.rs

@@ -1,3 +1,9 @@
+/*
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
 use std::collections::BTreeMap;
 
 use abi_stable::{