From 9191af3f8d73d2101c46192a4a80c41a19012320 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bla=C5=BE=20Hrastnik?= <blaz@mxxn.io>
Date: Sun, 27 Mar 2022 11:23:58 +0900
Subject: [PATCH] helix-loader + helix-core now compile for WASM

---
 helix-loader/Cargo.toml     |  7 ++++++-
 helix-loader/src/grammar.rs | 11 ++++++++++-
 2 files changed, 16 insertions(+), 2 deletions(-)

diff --git a/helix-loader/Cargo.toml b/helix-loader/Cargo.toml
index 607d1a0ad..c8cbf6d10 100644
--- a/helix-loader/Cargo.toml
+++ b/helix-loader/Cargo.toml
@@ -15,11 +15,16 @@ serde = { version = "1.0", features = ["derive"] }
 toml = "0.5"
 etcetera = "0.3"
 tree-sitter = "0.20"
-libloading = "0.7"
 once_cell = "1.9"
 
 log = "0.4"
 
+# TODO: these two should be on !wasm32 only
+
 # cloning/compiling tree-sitter grammars
 cc = { version = "1" }
 threadpool = { version = "1.0" }
+
+[target.'cfg(not(target_arch = "wasm32"))'.dependencies]
+libloading = "0.7"
+
diff --git a/helix-loader/src/grammar.rs b/helix-loader/src/grammar.rs
index 9d63a2bed..df88f24b4 100644
--- a/helix-loader/src/grammar.rs
+++ b/helix-loader/src/grammar.rs
@@ -1,5 +1,4 @@
 use anyhow::{anyhow, Context, Result};
-use libloading::{Library, Symbol};
 use serde::{Deserialize, Serialize};
 use std::fs;
 use std::time::SystemTime;
@@ -17,6 +16,9 @@ const DYLIB_EXTENSION: &str = "so";
 #[cfg(windows)]
 const DYLIB_EXTENSION: &str = "dll";
 
+#[cfg(target_arch = "wasm32")]
+const DYLIB_EXTENSION: &str = "wasm";
+
 #[derive(Debug, Serialize, Deserialize)]
 struct Configuration {
     #[serde(rename = "use-grammars")]
@@ -57,7 +59,14 @@ pub enum GrammarSource {
 const BUILD_TARGET: &str = env!("BUILD_TARGET");
 const REMOTE_NAME: &str = "origin";
 
+#[cfg(target_arch = "wasm32")]
+pub fn get_language(name: &str) -> Result<Language> {
+    unimplemented!()
+}
+
+#[cfg(not(target_arch = "wasm32"))]
 pub fn get_language(name: &str) -> Result<Language> {
+    use libloading::{Library, Symbol};
     let name = name.to_ascii_lowercase();
     let mut library_path = crate::runtime_dir().join("grammars").join(&name);
     library_path.set_extension(DYLIB_EXTENSION);