feat: 支持 try-catch 语法字节码执行

crates/oxide_vm/tests/vm_tests.rs

@@ -0,0 +1,77 @@
+use oxide_compiler::compiler::Compiler;
+use oxide_parser::Allocator;
+use oxide_vm::vm::Vm;
+
+fn eval(source: &str) -> String {
+    let allocator = Allocator::default();
+    let program = match oxide_parser::parse(&allocator, source) {
+        Ok(p) => p,
+        Err(e) => return format!("parse error: {}", e[0].message),
+    };
+    let module = match Compiler::new().compile(&program) {
+        Ok(m) => m,
+        Err(e) => return format!("compile error: {e}"),
+    };
+    let mut vm = Vm::new();
+    match vm.run(&module) {
+        Ok(result) => format!("{result}"),
+        Err(e) => format!("vm error: {e}"),
+    }
+}
+
+#[test]
+fn test_throw_caught_by_catch() {
+    assert_eq!(eval("try { throw 42; } catch(e) { e; }"), "42");
+}
+
+#[test]
+fn test_throw_without_catch() {
+    let result = eval("throw 'err';");
+    assert!(
+        result.contains("uncaught"),
+        "expected uncaught, got: {result}"
+    );
+}
+
+#[test]
+fn test_try_finally_normal_path() {
+    assert_eq!(eval("var x = 1; try { x = 2; } finally { x = 3; } x;"), "3");
+}
+
+#[test]
+fn test_try_finally_exception_path() {
+    let result = eval("var x = 0; try { throw 1; } finally { x = 2; }");
+    assert!(
+        result.contains("uncaught"),
+        "expected uncaught, got: {result}"
+    );
+}
+
+#[test]
+fn test_nested_try_inner_catches() {
+    assert_eq!(
+        eval("try { try { throw 1; } catch(e) { e; } } catch(e) { 2; }"),
+        "1"
+    );
+}
+
+#[test]
+fn test_nested_try_outer_catches() {
+    assert_eq!(
+        eval("try { try { throw 1; } catch(e) { throw 2; } } catch(e) { e; }"),
+        "2"
+    );
+}
+
+#[test]
+fn test_try_catch_finally() {
+    assert_eq!(
+        eval("var x = 0; try { x = 1; } catch(e) { x = 2; } finally { x = 3; } x;"),
+        "3"
+    );
+}
+
+#[test]
+fn test_catch_param_binding() {
+    assert_eq!(eval("try { throw 99; } catch(myErr) { myErr; }"), "99");
+}