Add helix-syntax as a wrapper around tree-sitter parsers.

1 files changed, 87 insertions, 0 deletions

diff --git a/helix-syntax/src/lib.rs b/helix-syntax/src/lib.rs
new file mode 100644
index 00000000..1ca36ca6
--- /dev/null
+++ b/helix-syntax/src/lib.rs
@@ -0,0 +1,87 @@
+use enum_iterator::IntoEnumIterator;
+use tree_sitter::Language;
+
+#[macro_export]
+macro_rules! mk_extern {
+    ( $( $name:ident ),* ) => {
+        $(
+            extern "C" { pub fn $name() -> Language; }
+        )*
+    };
+}
+
+#[macro_export]
+macro_rules! mk_enum {
+    ( $( $camel:ident ),* ) => {
+        #[derive(Clone, Debug, IntoEnumIterator, PartialEq)]
+        pub enum LANG {
+            $(
+                $camel,
+            )*
+        }
+    };
+}
+
+#[macro_export]
+macro_rules! mk_get_language {
+    ( $( ($camel:ident, $name:ident) ),* ) => {
+        pub fn get_language(lang: &LANG) -> Language {
+            unsafe {
+                match lang {
+                    $(
+                        LANG::$camel => $name(),
+                    )*
+                }
+            }
+        }
+    };
+}
+
+#[macro_export]
+macro_rules! mk_get_language_name {
+    ( $( $camel:ident ),* ) => {
+        pub fn get_language_name(lang: &LANG) -> &'static str {
+            match lang {
+                $(
+                    LANG::$camel => stringify!($camel),
+                )*
+            }
+        }
+    };
+}
+
+#[macro_export]
+macro_rules! mk_langs {
+    ( $( ($camel:ident, $name:ident) ),* ) => {
+        mk_extern!($( $name ),*);
+        mk_enum!($( $camel ),*);
+        mk_get_language!($( ($camel, $name) ),*);
+        mk_get_language_name!($( $camel ),*);
+    };
+}
+
+mk_langs!(
+    // 1) Name for enum
+    // 2) tree-sitter function to call to get a Language
+    (Agda, tree_sitter_agda),
+    (Bash, tree_sitter_bash),
+    (C, tree_sitter_c),
+    (CSharp, tree_sitter_c_sharp),
+    // (Cpp, tree_sitter_cpp),
+    (Css, tree_sitter_css),
+    (Go, tree_sitter_go),
+    (Haskell, tree_sitter_haskell),
+    (Html, tree_sitter_html),
+    (Java, tree_sitter_java),
+    (Javascript, tree_sitter_javascript),
+    (Json, tree_sitter_json),
+    (Julia, tree_sitter_julia),
+    (Php, tree_sitter_php),
+    (Python, tree_sitter_python),
+    (Ruby, tree_sitter_ruby),
+    (Rust, tree_sitter_rust),
+    (Scala, tree_sitter_scala),
+    (Swift, tree_sitter_swift),
+    (Tsx, tree_sitter_tsx),
+    (Typescript, tree_sitter_typescript)
+);