Merge branch 'master' into library-use-case

# Conflicts:
#	Cargo.toml
#	src/atom_table.rs
#	src/bin/scryer-prolog.rs
#	src/http.rs
#	src/machine/mock_wam.rs
#	src/machine/mod.rs
#	src/machine/system_calls.rs

src/lib.rs

@@ -19,13 +19,13 @@ pub mod codegen;
 mod debray_allocator;
 #[cfg(feature = "ffi")]
 mod ffi;
-mod variable_records;
 mod forms;
 mod heap_iter;
 pub mod heap_print;
 #[cfg(feature = "http")]
 mod http;
 mod indexing;
+mod variable_records;
 #[macro_use]
 pub mod instructions {
     include!(concat!(env!("OUT_DIR"), "/instructions.rs"));
@@ -40,3 +40,19 @@ mod targets;
 pub mod types;
 
 use instructions::instr;
+
+mod rcu;
+
+#[cfg(target_arch = "wasm32")]
+use wasm_bindgen::prelude::*;
+
+#[cfg(target_arch = "wasm32")]
+#[wasm_bindgen]
+pub fn eval_code(s: &str) -> String {
+    use web_sys::console;
+    use machine::mock_wam::*;
+
+    let mut wam = Machine::with_test_streams();
+    let bytes = wam.test_load_string(s);
+    String::from_utf8_lossy(&bytes).to_string()
+}