write out types for grammars under LanguageConfiguration

helix-core/src/indent.rs

@@ -445,6 +445,7 @@ where
                 indent_query: OnceCell::new(),
                 textobject_query: OnceCell::new(),
             }],
+            grammar: vec![],
         });
 
         // set runtime path so we can find the queries

helix-core/src/syntax.rs

@@ -75,6 +75,7 @@ where
 #[serde(deny_unknown_fields)]
 pub struct Configuration {
     pub language: Vec<LanguageConfiguration>,
+    pub grammar: Vec<GrammarConfiguration>,
 }
 
 // largely based on tree-sitter/cli/src/loader.rs
@@ -147,6 +148,25 @@ pub struct IndentQuery {
     pub outdent: HashSet<String>,
 }
 
+#[derive(Debug, Serialize, Deserialize)]
+pub struct GrammarConfiguration {
+    #[serde(rename = "name")]
+    pub grammar_id: String, // c-sharp, rust
+    pub source: GrammarSource,
+    pub path: Option<String>,
+}
+
+#[derive(Debug, Serialize, Deserialize)]
+#[serde(rename_all = "lowercase")]
+pub enum GrammarSource {
+    #[serde(rename = "path")]
+    Local(String),
+    Git {
+        remote: String,
+        rev: String,
+    },
+}
+
 #[derive(Debug)]
 pub struct TextObjectQuery {
     pub query: Query,
@@ -1849,7 +1869,10 @@ mod test {
         .map(String::from)
         .collect();
 
-        let loader = Loader::new(Configuration { language: vec![] });
+        let loader = Loader::new(Configuration {
+            language: vec![],
+            grammar: vec![],
+        });
 
         let language = get_language(&crate::RUNTIME_DIR, "Rust").unwrap();
         let config = HighlightConfiguration::new(