1 files changed, 91 insertions, 0 deletions
diff --git a/src/util/static_cfg.rs b/src/util/static_cfg.rs
new file mode 100644
index 000000000000..1b4864df72c9
--- /dev/null
+++ b/src/util/static_cfg.rs
@@ -0,0 +1,91 @@
+use include_dir::Dir;
+use serde::de;
+
+macro_rules! __static_cfg_include {
+    (toml_file, $filename:expr) => {
+        include_str!($filename)
+    };
+    (toml_dir, $filename:expr) => {
+        include_dir!($filename)
+    };
+    (json_file, $filename:expr) => {
+        include_str!($filename)
+    };
+    (json_dir, $filename:expr) => {
+        include_dir!($filename)
+    };
+}
+
+macro_rules! __static_cfg_type {
+    (toml_file) => (&'static str);
+    (json_file) => (&'static str);
+    (toml_dir) => (include_dir::Dir<'static>);
+    (json_dir) => (include_dir::Dir<'static>);
+}
+
+macro_rules! __static_cfg_parse {
+    (toml_file, $e:expr) => {
+        toml::from_str($e).unwrap()
+    };
+
+    (json_file, $e:expr) => {
+        serde_json::from_str($e).unwrap()
+    };
+
+    (toml_dir, $e:expr) => {
+        crate::util::static_cfg::parse_toml_dir($e)
+    };
+
+    (json_dir, $e:expr) => {
+        crate::util::static_cfg::parse_json_dir($e)
+    };
+}
+
+macro_rules! __static_cfg_inner {
+    ($(#[$attr:meta])* ($($vis:tt)*) static ref $N:ident : $T:ty = $kind:ident($filename:expr); $($t:tt)*) => {
+        // static RAW: &'static str = __static_cfg_include!($kind, $filename);
+        static RAW: __static_cfg_type!($kind) = __static_cfg_include!($kind, $filename);
+        lazy_static! {
+            $(#[$attr])* static ref $N: $T = __static_cfg_parse!($kind, RAW);
+        }
+
+        static_cfg!($($t)*);
+    }
+}
+
+#[macro_export]
+macro_rules! static_cfg {
+    ($(#[$attr:meta])* static ref $N:ident : $T:ty = $kind:ident($filename:expr); $($t:tt)*) => {
+        __static_cfg_inner!($(#[$attr])* () static ref $N : $T = $kind($filename); $($t)*);
+    };
+
+    ($(#[$attr:meta])* pub static ref $N:ident : $T:ty = $kind:ident($filename:expr); $($t:tt)*) => {
+        __static_cfg_inner!($(#[$attr])* (pub) static ref $N : $T = $kind($filename); $($t)*);
+    };
+
+    ($(#[$attr:meta])* pub ($($vis:tt)+) static ref $N:ident : $T:ty = $kind:ident($filename:expr); $($t:tt)*) => {
+        __static_cfg_inner!($(#[$attr])* (pub ($($vis)+)) static ref $N : $T = $kind($filename); $($t)*);
+    };
+
+    () => ()
+}
+
+pub fn parse_toml_dir<'a, T>(d: Dir<'a>) -> Vec<T>
+where
+    T: de::Deserialize<'a>,
+{
+    d.files()
+        .iter()
+        .map(|f| toml::from_str(f.contents_utf8().unwrap()).unwrap())
+        .collect()
+}
+
+pub fn parse_json_dir<'a, T>(d: Dir<'a>) -> Vec<T>
+where
+    T: de::Deserialize<'a>,
+{
+    d.files()
+        .iter()
+        .map(|f| serde_json::from_str(f.contents_utf8().unwrap()).unwrap())
+        .collect()
+}