feat: 支持 JSON 成员方法

crates/oxide_vm/src/vm.rs

@@ -670,6 +670,38 @@ fn bind_math(kernel: &Arc<OxideKernel>, global: &mut JsObject) {
     global.bump_generation();
 }
 
+fn bind_json(kernel: &Arc<OxideKernel>, global: &mut JsObject) {
+    let json_ptr = kernel.builtin_world().json_object.as_ptr() as *mut JsObject;
+    let json = unsafe { &mut *json_ptr };
+
+    bind_method!(
+        kernel.builtin_world(),
+        json,
+        kernel.string_forge().as_ref(),
+        kernel.shape_forge().as_ref(),
+        "parse",
+        crate::builtins::json::json_parse,
+        1
+    );
+    bind_method!(
+        kernel.builtin_world(),
+        json,
+        kernel.string_forge().as_ref(),
+        kernel.shape_forge().as_ref(),
+        "stringify",
+        crate::builtins::json::json_stringify,
+        1
+    );
+
+    let si_j = kernel.string_forge().intern("JSON").0;
+    let j_shape = kernel.shape_forge().make_shape(global.shape_id(), si_j);
+    let j_val =
+        JsValue::from_js_object(kernel.builtin_world().json_object.as_ptr() as *mut JsObject);
+    global.set_shape_id(j_shape);
+    global.ensure_hash_props().push(Box::new(j_val));
+    global.bump_generation();
+}
+
 fn bind_function(kernel: &Arc<OxideKernel>) {
     let function_methods = FunctionMethods {
         call: crate::builtins::function::function_call as *const (),
@@ -693,6 +725,7 @@ pub fn init_kernel_builtins(kernel: &Arc<OxideKernel>) {
     bind_string(kernel, global);
     bind_number(kernel, global);
     bind_math(kernel, global);
+    bind_json(kernel, global);
     bind_function(kernel);
 }