Add host prelude embedding API

2026-06-16 11:06:56 +09:00
parent 6316939438
commit e23b31da46
7 changed files with 427 additions and 3 deletions
@@ -0,0 +1,38 @@
+use decodal_core::{Data, EmptyLoader, Engine, HostValue};
+
+fn main() -> decodal_core::Result<()> {
+    let mut engine = Engine::new(EmptyLoader);
+
+    engine.bind_global(
+        "Service",
+        HostValue::object([
+            ("name", HostValue::string_type()),
+            ("port", HostValue::int_type().gt(443).default_int(8443)?),
+            ("enabled", HostValue::bool_type().default_bool(true)?),
+        ]),
+    )?;
+
+    let module = engine.add_root_source(
+        "embedded-main",
+        "embedded-main",
+        r#"
+        Service & {
+          name = "api";
+          port = 9443;
+        }
+        "#,
+    )?;
+
+    let value = engine.eval_module(module)?;
+    let data = engine.materialize(&value)?;
+
+    if let Data::Object(fields) = data {
+        assert_eq!(fields[0].value, Data::String(String::from("api")));
+        assert_eq!(fields[1].value, Data::Int(9443));
+        assert_eq!(fields[2].value, Data::Bool(true));
+    } else {
+        panic!("expected object");
+    }
+
+    Ok(())
+}