feat: 支持内建函数调用并修复初始化与绑定问题

crates/oxide_vm/tests/builtins_function_tests.rs

@@ -0,0 +1,34 @@
+use oxide_compiler::compiler::Compiler;
+use oxide_types::value::JsValue;
+use oxide_vm::vm::Vm;
+
+fn eval(vm: &mut Vm, source: &str) -> Result<JsValue, String> {
+    let allocator = oxide_parser::Allocator::default();
+    let program =
+        oxide_parser::parse(&allocator, source).map_err(|e| format!("Parse error: {:?}", e))?;
+    let module = Compiler::new()
+        .compile(&program)
+        .map_err(|e| format!("Compile error: {}", e))?;
+    vm.run(&module)
+}
+
+#[test]
+fn function_call_changes_this() {
+    let mut vm = Vm::new();
+    let result = eval(&mut vm, "Math.max.call(null, 10, 5)").unwrap();
+    assert!((result.as_double() - 10.0).abs() < 0.0001);
+}
+
+#[test]
+fn function_apply_changes_this() {
+    let mut vm = Vm::new();
+    let result = eval(&mut vm, "Math.max.apply(null, [10, 5])").unwrap();
+    assert!((result.as_double() - 10.0).abs() < 0.0001);
+}
+
+#[test]
+fn function_bind_creates_wrapper() {
+    let mut vm = Vm::new();
+    let result = eval(&mut vm, "var b = Math.max.bind(null, 1); b(5)").unwrap();
+    assert!((result.as_double() - 5.0).abs() < 0.0001);
+}