2015 lines
73 KiB
Rust
2015 lines
73 KiB
Rust
//! 通过手工指令验证 VM 求值、根生命周期及暂停行为，测试框架直接调用，无需源码解析器。
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//! op/simple/make_code 统一构造已验证代码；错误编码用 EndorCode 直接检验构造阶段拒绝。
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use std::any::Any;
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use std::sync::Arc;
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use std::sync::atomic::{AtomicUsize, Ordering};
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use endor_core::{
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CodeLayout, CompareOp, EndorCode, EndorCodeObject, EndorFunctionObject,
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EndorNativeFunctionObject, ExecutionLimits, Instruction, ObjectPayload, ObjectRef, Opcode,
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Value, Vm, VmError,
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};
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/// 测试辅助，构造完整 u32 操作数逻辑指令，实际扩展前缀由编码器生成。
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fn op(opcode: Opcode, argument: u32) -> Instruction {
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Instruction::new(opcode, argument)
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}
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/// 测试辅助，构造参数为零的无操作数指令，不手写物理编码。
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fn simple(opcode: Opcode) -> Instruction {
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Instruction::simple(opcode)
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}
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/// 测试辅助，创建直接文本 Value，不分配堆字符串。
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fn text(value: &str) -> Value {
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Value::Text(value.into())
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}
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/// 测试辅助，编码并验证指令/常量/布局后分配代码拥有根；失败直接使测试失败。
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fn make_code(
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vm: &mut Vm,
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instructions: &[Instruction],
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constants: Vec<Value>,
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layout: CodeLayout,
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) -> ObjectRef {
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vm.new_code(EndorCode::from_instructions(instructions, constants, layout).unwrap())
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.unwrap()
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}
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/// 其他执行测试复用的最小返回常量代码，根由调用测试归还。
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fn return_constant(vm: &mut Vm, value: Value) -> ObjectRef {
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make_code(
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vm,
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&[op(Opcode::LoadConst, 0), simple(Opcode::ReturnValue)],
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vec![value],
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CodeLayout::default(),
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)
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}
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#[derive(Debug)]
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/// 可选原地赋值测试载荷；只保存 Rust 原子数，不含可变托管对象边。
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struct SharedReference(AtomicUsize);
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impl ObjectPayload for SharedReference {
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/// Store 下转型识别测试载荷；与语言名义类型分开。
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fn as_any(&self) -> &dyn Any {
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self
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}
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/// 测试错误/诊断类别。
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fn kind_name(&self) -> &'static str {
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"shared-reference"
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}
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/// Store 可选旧式原地赋值协议，仅支持同类且先校验后原子更新，不改变托管引用边。
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fn assign_from(&self, source: &dyn ObjectPayload) -> Result<bool, VmError> {
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// 异类载荷返回 false 表示不做原地赋值，不是错误，也不修改目标。
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let Some(source) = source.as_any().downcast_ref::<Self>() else {
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return Ok(false);
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};
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// 先读候选内容再校验，拒绝值不能留下半写状态。
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let value = source.0.load(Ordering::SeqCst);
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// 注入明确协议错误，验证执行器清理而不是静默重绑定。
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if value == 99 {
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return Err(VmError::InvalidArgument("rejected replacement"));
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}
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// 只更新宿主原子状态，不引入未 trace 的托管引用边。
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self.0.store(value, Ordering::SeqCst);
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Ok(true)
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}
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}
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#[test]
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/// 局部与全局赋值都保留共享对象旧身份并更新内容，已有 alias 可见，清理不泄漏根。
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fn opt_in_assignment_keeps_alias_identity_ordinary_values_and_root_accounting() {
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// 同一字节码模板分别覆盖 StoreFast 与 StoreGlobal，避免只测试一条赋值入口。
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for local in [false, true] {
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// 独立 VM 隔离对象计数/全局绑定，清理断言只针对本场景。
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let mut vm = Vm::new().unwrap();
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// 共享目标以 1 初始化，同时另由 alias 持有；赋值后身份应保持。
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let old = vm.allocate(SharedReference(AtomicUsize::new(1))).unwrap();
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// 候选共享值初始化为 2，复制内容到 old 不等于让 alias 指向此新身份。
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let new = vm.allocate(SharedReference(AtomicUsize::new(2))).unwrap();
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// 函数执行环境与名称表索引对应，字典内部边独立于测试外部根。
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let globals = vm.new_dict().unwrap();
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vm.dict_set(globals, text("alias"), Value::Object(old))
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.unwrap();
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// 只切换变量访问策略，操作数零在两类布局中分别代表槽/全局名。
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let (store, load) = if local {
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(Opcode::StoreFast, Opcode::LoadFast)
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} else {
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(Opcode::StoreGlobal, Opcode::LoadGlobal)
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};
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// 操作数和布局在构造时校验，execute 期间测试实际值流与引用行为。
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let code = make_code(
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&mut vm,
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&[
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op(Opcode::LoadConst, 0),
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op(store, 0),
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op(Opcode::LoadConst, 1),
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op(store, 0),
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op(load, 0),
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simple(Opcode::ReturnValue),
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],
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vec![Value::Object(old), Value::Object(new)],
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// 局部模板使用 locals，另一分支使用 names；不能把两类索引混用。
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if local {
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CodeLayout {
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locals: vec!["value".into()],
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..CodeLayout::default()
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}
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} else {
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CodeLayout {
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names: vec!["value".into()],
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..CodeLayout::default()
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}
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},
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);
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// 执行结果拥有根，读取完成后必须单独归还，不能当作纯借用复制。
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let value = vm.execute(code, globals).unwrap();
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assert_eq!(value, Value::Object(old));
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assert_eq!(
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vm.dict_get(globals, &text("alias")).unwrap(),
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Some(Value::Object(old))
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);
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assert_eq!(
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vm.payload::<SharedReference>(old, "shared-reference")
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.unwrap()
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.0
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.load(Ordering::SeqCst),
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2
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);
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// 归还结果根后，代码常量、全局 alias 和测试根仍按各自拥有关系存在。
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vm.release_value(value).unwrap();
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// 归还代码根同时移除常量表内部边，不重复释放常量对象的测试根。
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vm.release(code).unwrap();
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// 移除全局内部边，使后续测试根归还后图真正为空。
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vm.dict_clear(globals).unwrap();
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vm.release(globals).unwrap();
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vm.release(old).unwrap();
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vm.release(new).unwrap();
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assert_eq!(vm.object_count(), 0);
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}
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}
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#[test]
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/// 赋值协议拒绝新值时旧对象内容/全局绑定不变，执行错误根由统一帧清理归还。
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fn failed_opt_in_assignment_preserves_target_and_cleans_execution_roots() {
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// 独立 VM 隔离对象计数/全局绑定，清理断言只针对本场景。
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let mut vm = Vm::new().unwrap();
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// 共享目标以 1 初始化，同时另由 alias 持有；赋值后身份应保持。
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let old = vm.allocate(SharedReference(AtomicUsize::new(1))).unwrap();
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// 以哨兵值 99 触发校验拒绝，不允许污染旧目标值。
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let rejected = vm.allocate(SharedReference(AtomicUsize::new(99))).unwrap();
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// 函数执行环境与名称表索引对应，字典内部边独立于测试外部根。
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let globals = vm.new_dict().unwrap();
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vm.dict_set(globals, text("value"), Value::Object(old))
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.unwrap();
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// 操作数和布局在构造时校验，execute 期间测试实际值流与引用行为。
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let code = make_code(
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&mut vm,
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&[
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op(Opcode::LoadConst, 0),
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op(Opcode::StoreGlobal, 0),
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op(Opcode::LoadConst, 1),
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simple(Opcode::ReturnValue),
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],
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vec![Value::Object(rejected), Value::Nil],
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CodeLayout {
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names: vec!["value".into()],
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..CodeLayout::default()
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},
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);
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assert!(vm.execute(code, globals).is_err());
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assert_eq!(
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vm.payload::<SharedReference>(old, "shared-reference")
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.unwrap()
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.0
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.load(Ordering::SeqCst),
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1
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);
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assert_eq!(
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vm.dict_get(globals, &text("value")).unwrap(),
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Some(Value::Object(old))
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);
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// 归还代码根同时移除常量表内部边，不重复释放常量对象的测试根。
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vm.release(code).unwrap();
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// 移除全局内部边，使后续测试根归还后图真正为空。
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vm.dict_clear(globals).unwrap();
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vm.release(globals).unwrap();
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vm.release(old).unwrap();
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vm.release(rejected).unwrap();
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assert_eq!(vm.object_count(), 0);
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}
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#[test]
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/// 检查四字节参数前缀编码，再用第 256 号常量验证扩展操作数执行与偏移。
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fn wordcode_extended_operands_decode_and_execute_without_truncation() {
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// 只编码操作数不做常量索引验证，用固定字节向量证明高位未被截断。
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let encoded = Instruction::encode_all(&[op(Opcode::LoadConst, 0x01020304)]).unwrap();
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assert_eq!(encoded, vec![255, 1, 255, 2, 255, 3, 1, 4]);
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// 独立 VM 隔离对象计数/全局绑定，清理断言只针对本场景。
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let mut vm = Vm::new().unwrap();
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// 常量表至少 257 项才能合法引用索引 256。
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let mut constants = vec![Value::Nil; 257];
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// 将边界索引放置独特值，执行返回可检出仅保留低八位的错误。
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constants[256] = text("extended");
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// 操作数和布局在构造时校验，execute 期间测试实际值流与引用行为。
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let code = make_code(
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&mut vm,
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&[op(Opcode::LoadConst, 256), simple(Opcode::ReturnValue)],
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constants,
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CodeLayout::default(),
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);
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// 借用已验证逻辑指令检查起始/末尾代码单元位置及最大栈高。
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let executable = vm.payload::<EndorCodeObject>(code, "code").unwrap().code();
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assert_eq!(executable.instructions()[0].offset, 0);
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assert_eq!(executable.instructions()[0].next_offset, 2);
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assert_eq!(executable.stack_size(), 1);
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// 函数执行环境与名称表索引对应，字典内部边独立于测试外部根。
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let globals = vm.new_dict().unwrap();
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assert_eq!(vm.execute(code, globals).unwrap(), text("extended"));
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}
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#[test]
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/// 空/截断/未知/前缀过多/无参带数据及跳入前缀中部在执行前拒绝。
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fn malformed_wordcode_and_unaligned_jumps_are_rejected_at_construction() {
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// 各非法物理流独立走 EndorCode 构造，均须返回 InvalidBytecode。
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for bytes in [
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vec![],
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vec![0],
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vec![254, 0],
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vec![255, 1],
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vec![255, 1, 255, 1, 255, 1, 255, 1, 1, 0],
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vec![13, 1],
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] {
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assert!(matches!(
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EndorCode::new(bytes, vec![Value::Nil], vec![], vec![]),
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Err(VmError::InvalidBytecode { .. })
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));
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}
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// 跳转目标 2 位于从代码单元 1 开始的扩展 LOAD_CONST 内部，不能作为逻辑起点。
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// 故意跳至带前缀 LOAD_CONST 的第二单元，而非该逻辑指令首前缀。
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let bytes = vec![14, 1, 255, 1, 1, 0, 13, 0];
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assert!(EndorCode::new(bytes, vec![Value::Nil; 257], vec![], vec![]).is_err());
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assert!(
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EndorCode::from_instructions(
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&[op(Opcode::LoadConst, 1), simple(Opcode::ReturnValue)],
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vec![Value::Nil],
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CodeLayout::default()
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)
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.is_err()
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);
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}
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#[test]
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/// 检查栈下溢、落出代码、变高回边、无 Cell 槽与分支汇合高度不一致。
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fn verifier_rejects_underflow_fallthrough_bad_cells_and_inconsistent_stack_joins() {
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// 每个逻辑指令序列隔离一种栈/控制流/槽布局错误。
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let cases = [
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vec![simple(Opcode::PopTop), simple(Opcode::ReturnValue)],
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vec![op(Opcode::LoadConst, 0)],
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vec![op(Opcode::LoadConst, 0), op(Opcode::JumpBackward, 2)],
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vec![op(Opcode::LoadDeref, 0), simple(Opcode::ReturnValue)],
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vec![
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op(Opcode::LoadConst, 0),
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op(Opcode::PopJumpIfFalse, 2),
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op(Opcode::LoadConst, 0),
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op(Opcode::JumpForward, 1),
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simple(Opcode::Nop),
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op(Opcode::LoadConst, 0),
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simple(Opcode::ReturnValue),
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],
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];
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// 相同常量和空布局下逐例验证，不能用执行时崩溃替代静态拒绝。
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for instructions in cases {
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assert!(
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EndorCode::from_instructions(&instructions, vec![Value::Nil], CodeLayout::default())
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.is_err()
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);
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}
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// 把局部 captured 明确标为 Cell，再用 LoadFast 证明访问操作码必须匹配槽种类。
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let layout = CodeLayout {
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locals: vec!["captured".into()],
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cell_variables: vec!["captured".into()],
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..CodeLayout::default()
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};
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assert!(
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EndorCode::from_instructions(
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&[op(Opcode::LoadFast, 0), simple(Opcode::ReturnValue)],
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vec![],
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layout
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)
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.is_err()
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);
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}
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#[test]
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/// 验证 Load/StoreFast、全局存取和返回构成完整值流，成功不产生错误回溯。
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fn execute_moves_values_between_constants_local_slots_and_globals() {
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// 独立 VM 隔离对象计数/全局绑定，清理断言只针对本场景。
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let mut vm = Vm::new().unwrap();
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assert_eq!(vm.object_count(), 0);
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// 函数执行环境与名称表索引对应，字典内部边独立于测试外部根。
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let globals = vm.new_dict().unwrap();
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// 操作数和布局在构造时校验，execute 期间测试实际值流与引用行为。
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let code = make_code(
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&mut vm,
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&[
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op(Opcode::LoadConst, 0),
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op(Opcode::StoreFast, 0),
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op(Opcode::LoadFast, 0),
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op(Opcode::StoreGlobal, 0),
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op(Opcode::LoadGlobal, 0),
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simple(Opcode::ReturnValue),
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],
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vec![text("hello")],
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CodeLayout {
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locals: vec!["local".into()],
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names: vec!["saved".into()],
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..CodeLayout::default()
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},
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);
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assert_eq!(vm.execute(code, globals).unwrap(), text("hello"));
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assert_eq!(
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vm.dict_get(globals, &text("saved")).unwrap(),
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Some(text("hello"))
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);
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assert!(vm.last_traceback().is_empty());
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// 归还代码根同时移除常量表内部边，不重复释放常量对象的测试根。
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vm.release(code).unwrap();
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vm.release(globals).unwrap();
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assert_eq!(vm.object_count(), 0);
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}
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#[derive(Debug)]
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/// 驱动循环条件的无语言类型原生载荷，Arc 计数器由测试在 VM 外观察。
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struct Tick(Arc<AtomicUsize>);
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impl ObjectPayload for Tick {
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/// Store 下转型识别测试载荷；与语言名义类型分开。
|
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fn as_any(&self) -> &dyn Any {
|
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self
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}
|
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/// 测试错误/诊断类别。
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fn kind_name(&self) -> &'static str {
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"tick"
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}
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/// Tick 旧式原生回调，前三次返回真、第四次为假，驱动可终止的字节码回边循环。
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fn call(&self, arguments: &[Value]) -> Result<Value, VmError> {
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assert!(arguments.is_empty());
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Ok(Value::Bool(self.0.fetch_add(1, Ordering::SeqCst) < 3))
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}
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}
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#[test]
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/// 条件分支从指令末尾计算相对距离，回边重进 tick 调用，最后返回 done。
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fn relative_branches_and_back_edges_execute_a_loop() {
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// 独立 VM 隔离对象计数/全局绑定，清理断言只针对本场景。
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let mut vm = Vm::new().unwrap();
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// VM 外原子计数用于确认循环调用次数，不通过返回文本猜测回边是否执行。
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let count = Arc::new(AtomicUsize::new(0));
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// Tick 回调载荷持有 Rust Arc，返回直接 Bool，无托管捕获边。
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let tick = vm.allocate(Tick(count.clone())).unwrap();
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// 函数执行环境与名称表索引对应，字典内部边独立于测试外部根。
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let globals = vm.new_dict().unwrap();
|
||
vm.dict_set(globals, text("tick"), Value::Object(tick))
|
||
.unwrap();
|
||
// 操作数和布局在构造时校验，execute 期间测试实际值流与引用行为。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadGlobal, 0),
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::Call, 0),
|
||
op(Opcode::PopJumpIfFalse, 1),
|
||
op(Opcode::JumpBackward, 5),
|
||
op(Opcode::LoadConst, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![text("done")],
|
||
CodeLayout {
|
||
names: vec!["tick".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
assert_eq!(vm.execute(code, globals).unwrap(), text("done"));
|
||
assert_eq!(count.load(Ordering::SeqCst), 4);
|
||
}
|
||
|
||
#[test]
|
||
/// 验证直接默认参数和嵌套显式参数的对象结果均新增一份拥有根，归还后恢复原计数。
|
||
fn nested_language_calls_bind_defaults_and_return_owned_argument_objects() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 单参数源码函数只读参数再返回，默认值与显式实参应走相同拥有结果协议。
|
||
let identity = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadFast, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["value".into()],
|
||
locals: vec!["value".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 默认字符串先有测试根，函数默认值表另持内部边。
|
||
let default = vm.new_string("default").unwrap();
|
||
// 创建源码/原生函数拥有根，代码/全局/默认值内部边由分配协议另计。
|
||
let function = vm
|
||
.new_function(
|
||
"identity",
|
||
identity,
|
||
globals,
|
||
vec![Value::Object(default)],
|
||
vec![],
|
||
)
|
||
.unwrap();
|
||
// 保存调用前计数，结果交付多一根，归还结果后必须恢复。
|
||
let before = vm.ref_count(default).unwrap();
|
||
// 函数把已有参数/默认值作为结果，身份不变但结果仍取得独立拥有根。
|
||
let returned = vm.call(function, &[]).unwrap();
|
||
assert_eq!(returned, Value::Object(default));
|
||
assert_eq!(vm.ref_count(default).unwrap(), before + 1);
|
||
// 只归还本次调用结果根，不触碰默认表/常量/测试输入的所有权。
|
||
vm.release_value(returned).unwrap();
|
||
assert_eq!(vm.ref_count(default).unwrap(), before);
|
||
vm.dict_set(globals, text("identity"), Value::Object(function))
|
||
.unwrap();
|
||
// 显式实参放进包装代码常量表，也有独立测试根。
|
||
let argument = vm.new_string("argument").unwrap();
|
||
// 包装指令按函数、Null、参数布局调用 identity，检验跨两个源码帧的引用转交。
|
||
let wrapper = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadGlobal, 0),
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::Call, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Object(argument)],
|
||
CodeLayout {
|
||
names: vec!["identity".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 保存调用前计数，结果交付多一根，归还结果后必须恢复。
|
||
let before = vm.ref_count(argument).unwrap();
|
||
// 临时执行函数与嵌套帧清理后，结果对象仍须保持拥有。
|
||
let returned = vm.execute(wrapper, globals).unwrap();
|
||
assert_eq!(returned, Value::Object(argument));
|
||
assert_eq!(vm.ref_count(argument).unwrap(), before + 1);
|
||
// 只归还本次调用结果根，不触碰默认表/常量/测试输入的所有权。
|
||
vm.release_value(returned).unwrap();
|
||
assert_eq!(vm.ref_count(argument).unwrap(), before);
|
||
}
|
||
|
||
#[test]
|
||
/// 参数过少/过多及异堆参数均在帧提交前拒绝，函数根计数不得因失败增加。
|
||
fn argument_count_and_foreign_argument_failures_do_not_retain_inputs() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 手工已验证代码，操作数布局与后面的参数/自由变量元数据一一对应。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadFast, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["value".into()],
|
||
locals: vec!["value".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 创建源码/原生函数拥有根，代码/全局/默认值内部边由分配协议另计。
|
||
let function = vm
|
||
.new_function("identity", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
assert!(matches!(
|
||
vm.call(function, &[]),
|
||
Err(VmError::ArgumentCount {
|
||
required: 1,
|
||
provided: 0,
|
||
..
|
||
})
|
||
));
|
||
assert!(matches!(
|
||
vm.call(function, &[Value::Nil, Value::Nil]),
|
||
Err(VmError::ArgumentCount {
|
||
maximum: 1,
|
||
provided: 2,
|
||
..
|
||
})
|
||
));
|
||
// 另一堆产生真正有效但归属不同的参数，不能当本堆对象保留。
|
||
let mut other = Vm::new().unwrap();
|
||
// 异堆参数在执行源码之前拒绝，不改变当前函数计数。
|
||
let foreign = other.new_object().unwrap();
|
||
// 保存调用前计数，结果交付多一根，归还结果后必须恢复。
|
||
let before = vm.ref_count(function).unwrap();
|
||
assert_eq!(
|
||
vm.call(function, &[Value::Object(foreign)]),
|
||
Err(VmError::ForeignHandle)
|
||
);
|
||
assert_eq!(vm.ref_count(function).unwrap(), before);
|
||
}
|
||
|
||
#[test]
|
||
/// BuildMap 返回根在代码/全局释放后独立保活结果字典和子对象，释放结果才清空图。
|
||
fn freshly_built_maps_and_their_children_survive_frame_cleanup() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 子字符串先由测试根和代码常量持有，最终转由结果字典边保活。
|
||
let child = vm.new_string("owned by result").unwrap();
|
||
// 手工已验证代码，操作数布局与后面的参数/自由变量元数据一一对应。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
op(Opcode::BuildMap, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![text("child"), Value::Object(child)],
|
||
CodeLayout::default(),
|
||
);
|
||
// 归还测试根，代码常量在实际执行前仍维持子对象存活。
|
||
vm.release(child).unwrap();
|
||
// 执行结果拥有根可跨越代码与全局生命周期。
|
||
let result = vm.execute(code, globals).unwrap();
|
||
// 移除代码常量边后，返回图必须自己保留所需对象；不是只靠旧帧保活。
|
||
vm.release(code).unwrap();
|
||
// 归还环境测试根，临时执行函数已清理，结果不能依赖其持续存在。
|
||
vm.release(globals).unwrap();
|
||
// 结果字典只有一份外部根，其 child 值是独立内部强边。
|
||
let Value::Object(dictionary) = result else {
|
||
panic!("expected a map");
|
||
};
|
||
assert_eq!(vm.ref_count(dictionary).unwrap(), 1);
|
||
assert_eq!(
|
||
vm.dict_get(dictionary, &text("child")).unwrap(),
|
||
Some(Value::Object(child))
|
||
);
|
||
assert_eq!(vm.str(child).unwrap(), "owned by result");
|
||
// 结果最后根归还，子对象的最后字典边随之释放，堆应归零。
|
||
vm.release(dictionary).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
/// 原生辅助只借用返回首参数，空参数错误；对象结果拥有根由 VM 补充。
|
||
fn echo(arguments: &[Value]) -> Result<Value, VmError> {
|
||
arguments
|
||
.first()
|
||
.cloned()
|
||
.ok_or(VmError::InvalidArgument("expected an argument"))
|
||
}
|
||
|
||
#[test]
|
||
/// 原生 echo 返回临时 BuildMap 实参，输入弹栈前必须先保留结果根。
|
||
fn native_return_of_a_temporary_argument_is_retained_before_inputs_are_popped() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 创建源码/原生函数拥有根，代码/全局/默认值内部边由分配协议另计。
|
||
let function = vm
|
||
.allocate(EndorNativeFunctionObject::new("echo", echo))
|
||
.unwrap();
|
||
vm.dict_set(globals, text("echo"), Value::Object(function))
|
||
.unwrap();
|
||
// 调用前/后按场景归还测试函数根；全局字典可能仍持有函数内部边。
|
||
vm.release(function).unwrap();
|
||
// 手工已验证代码，操作数布局与后面的参数/自由变量元数据一一对应。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadGlobal, 0),
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::BuildMap, 0),
|
||
op(Opcode::Call, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![],
|
||
CodeLayout {
|
||
names: vec!["echo".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 执行结果拥有根可跨越代码与全局生命周期。
|
||
let result = vm.execute(code, globals).unwrap();
|
||
// 移除代码常量边后，返回图必须自己保留所需对象；不是只靠旧帧保活。
|
||
vm.release(code).unwrap();
|
||
// 归还环境测试根，临时执行函数已清理，结果不能依赖其持续存在。
|
||
vm.release(globals).unwrap();
|
||
assert_eq!(vm.object_count(), 1);
|
||
vm.release_value(result).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
/// 原生辅助恒定报错，使执行器在 Call 处回溯与清理临时参数。
|
||
fn fail(_arguments: &[Value]) -> Result<Value, VmError> {
|
||
Err(VmError::InvalidArgument("host failure"))
|
||
}
|
||
|
||
#[test]
|
||
/// 错误后对象数恢复调用前，回溯保留故障 Call 偏移及显式代码位置元数据。
|
||
fn native_failure_unwinds_temporary_roots_and_keeps_execution_locations() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 创建源码/原生函数拥有根，代码/全局/默认值内部边由分配协议另计。
|
||
let function = vm
|
||
.allocate(EndorNativeFunctionObject::new("fail", fail))
|
||
.unwrap();
|
||
vm.dict_set(globals, text("fail"), Value::Object(function))
|
||
.unwrap();
|
||
// 附显式名称、文件和起始行，用故障回溯断言实际保存的元数据。
|
||
let code = EndorCode::from_instructions(
|
||
&[
|
||
op(Opcode::LoadGlobal, 0),
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::BuildMap, 0),
|
||
op(Opcode::Call, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![],
|
||
CodeLayout {
|
||
names: vec!["fail".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
)
|
||
.unwrap()
|
||
.with_location("outer", "demo.endor", 12);
|
||
// 将已验证代码分配为拥有根，临时执行函数之后另外持代码边。
|
||
let code = vm.new_code(code).unwrap();
|
||
// 记录代码/全局等场景根数，失败后不得残留临时字典、函数或帧根。
|
||
let before = vm.object_count();
|
||
assert_eq!(
|
||
vm.execute(code, globals),
|
||
Err(VmError::InvalidArgument("host failure"))
|
||
);
|
||
assert_eq!(vm.object_count(), before);
|
||
assert_eq!(vm.last_traceback()[0].function, "outer");
|
||
assert_eq!(vm.last_traceback()[0].instruction_offset, 3);
|
||
assert_eq!(vm.last_traceback()[0].filename, "demo.endor");
|
||
assert_eq!(vm.last_traceback()[0].first_line, 12);
|
||
}
|
||
|
||
#[test]
|
||
/// 递归源码调用由显式帧向量推进，触及深度硬上限后全部执行根恢复，环境环可显式回收。
|
||
fn recursion_uses_explicit_frames_and_unwinds_at_the_frame_limit() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 手工已验证代码，操作数布局与后面的参数/自由变量元数据一一对应。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadGlobal, 0),
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::Call, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![],
|
||
CodeLayout {
|
||
names: vec!["recurse".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 创建源码/原生函数拥有根，代码/全局/默认值内部边由分配协议另计。
|
||
let function = vm
|
||
.new_function("recurse", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
vm.dict_set(globals, text("recurse"), Value::Object(function))
|
||
.unwrap();
|
||
// 递归深度会临时保留多份函数根，退出后应恢复精确初始计数。
|
||
let roots = vm.ref_count(function).unwrap();
|
||
assert_eq!(
|
||
vm.call_with_limits(
|
||
function,
|
||
&[],
|
||
ExecutionLimits {
|
||
max_frames: 64,
|
||
max_instructions: 1000
|
||
}
|
||
),
|
||
Err(VmError::ExecutionLimit("frames"))
|
||
);
|
||
assert_eq!(vm.last_traceback().len(), 64);
|
||
assert_eq!(vm.ref_count(function).unwrap(), roots);
|
||
// 调用前/后按场景归还测试函数根；全局字典可能仍持有函数内部边。
|
||
vm.release(function).unwrap();
|
||
// 移除代码常量边后，返回图必须自己保留所需对象；不是只靠旧帧保活。
|
||
vm.release(code).unwrap();
|
||
// 归还环境测试根，临时执行函数已清理，结果不能依赖其持续存在。
|
||
vm.release(globals).unwrap();
|
||
assert_eq!(vm.collect_cycles(), 3);
|
||
}
|
||
|
||
#[test]
|
||
/// 栈高合法的无限回边仍须由硬指令预算终止，不能泄漏临时函数或帧。
|
||
fn instruction_limit_stops_a_valid_infinite_loop_without_leaking_frames() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 手工已验证代码，操作数布局与后面的参数/自由变量元数据一一对应。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::JumpBackward, 1)],
|
||
vec![],
|
||
CodeLayout::default(),
|
||
);
|
||
// 记录代码/全局等场景根数，失败后不得残留临时字典、函数或帧根。
|
||
let before = vm.object_count();
|
||
assert_eq!(
|
||
vm.execute_with_limits(
|
||
code,
|
||
globals,
|
||
ExecutionLimits {
|
||
max_frames: 8,
|
||
max_instructions: 3
|
||
}
|
||
),
|
||
Err(VmError::ExecutionLimit("instructions"))
|
||
);
|
||
assert_eq!(vm.object_count(), before);
|
||
assert_eq!(vm.last_traceback().len(), 1);
|
||
}
|
||
|
||
#[test]
|
||
/// 函数捕获创建时内置字典身份，全局同名键仍优先，改写 __builtins__ 不重绑定旧函数。
|
||
fn function_globals_shadow_builtins_and_capture_the_original_builtins_dictionary() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 原内置字典由函数创建时捕获，不因稍后 globals.__builtins__ 改变而替换身份。
|
||
let builtins = vm.new_dict().unwrap();
|
||
vm.dict_set(builtins, text("answer"), text("builtin"))
|
||
.unwrap();
|
||
vm.dict_set(globals, text("__builtins__"), Value::Object(builtins))
|
||
.unwrap();
|
||
// 手工已验证代码，操作数布局与后面的参数/自由变量元数据一一对应。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadGlobal, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
names: vec!["answer".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 创建源码/原生函数拥有根，代码/全局/默认值内部边由分配协议另计。
|
||
let function = vm
|
||
.new_function("read", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
// 新内置字典仅更新 globals 字段，用于证明旧函数仍引用原内置空间。
|
||
let replacement = vm.new_dict().unwrap();
|
||
vm.dict_set(globals, text("__builtins__"), Value::Object(replacement))
|
||
.unwrap();
|
||
// 归还原内置测试根后仍应由函数 captured builtins 强边保活。
|
||
vm.release(builtins).unwrap();
|
||
assert_eq!(vm.call(function, &[]).unwrap(), text("builtin"));
|
||
vm.dict_set(globals, text("answer"), text("global"))
|
||
.unwrap();
|
||
assert_eq!(vm.call(function, &[]).unwrap(), text("global"));
|
||
}
|
||
|
||
#[test]
|
||
/// 多个函数共享同一 Cell，Load/Store/DeleteDeref 对内容变化立即可见，clear 后读取报未绑定。
|
||
fn shared_free_variable_cells_are_read_written_and_deleted_by_bytecode() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 共享槽初值 first，read/write/clear 函数各自持有同一 Cell 强边。
|
||
let cell = vm.new_cell(Some(text("first"))).unwrap();
|
||
// 没有局部槽，唯一自由变量 Cell 位于 localsplus 索引零。
|
||
let read_code = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadDeref, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
free_variables: vec!["x".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 有一个普通参数槽，外部 Cell 追加在索引一，StoreDeref 不能误写局部槽。
|
||
let write_code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadFast, 0),
|
||
op(Opcode::StoreDeref, 1),
|
||
op(Opcode::LoadConst, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Nil],
|
||
CodeLayout {
|
||
parameters: vec!["value".into()],
|
||
locals: vec!["value".into()],
|
||
free_variables: vec!["x".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// DeleteDeref 清空 Cell 而非写 Nil，随后返回直接 Nil。
|
||
let clear_code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::DeleteDeref, 0),
|
||
op(Opcode::LoadConst, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Nil],
|
||
CodeLayout {
|
||
free_variables: vec!["x".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 只读捕获值的函数，共享槽未复制成独立快照。
|
||
let read = vm
|
||
.new_function("read", read_code, globals, vec![], vec![cell])
|
||
.unwrap();
|
||
// 把显式参数写到同一捕获 Cell，其他闭包应立即看到新值。
|
||
let write = vm
|
||
.new_function("write", write_code, globals, vec![], vec![cell])
|
||
.unwrap();
|
||
// 删除同一捕获变量后 read 映射 EmptyCell 为具名 UnboundLocal。
|
||
let clear = vm
|
||
.new_function("clear", clear_code, globals, vec![], vec![cell])
|
||
.unwrap();
|
||
assert_eq!(vm.call(read, &[]).unwrap(), text("first"));
|
||
vm.call(write, &[text("updated")]).unwrap();
|
||
assert_eq!(vm.call(read, &[]).unwrap(), text("updated"));
|
||
vm.call(clear, &[]).unwrap();
|
||
assert_eq!(vm.call(read, &[]), Err(VmError::UnboundLocal("x".into())));
|
||
}
|
||
|
||
#[test]
|
||
/// 参数提升为 Cell 后通过 LoadClosure 返回，原帧与参数测试根释放仍由 Cell 边保活内容。
|
||
fn captured_argument_cells_keep_their_contents_after_the_frame_returns() {
|
||
// 独立 VM 隔离调用帧、全局与根计数断言。
|
||
let mut vm = Vm::new().unwrap();
|
||
// 函数执行环境的拥有根，函数也经载荷强边持有该字典。
|
||
let globals = vm.new_dict().unwrap();
|
||
// 手工已验证代码，操作数布局与后面的参数/自由变量元数据一一对应。
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadClosure, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["x".into()],
|
||
locals: vec!["x".into()],
|
||
cell_variables: vec!["x".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
// 创建源码/原生函数拥有根，代码/全局/默认值内部边由分配协议另计。
|
||
let function = vm
|
||
.new_function("capture", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
// 参数对象有测试根，帧初始化提升 Cell 时另建立内容强边。
|
||
let value = vm.new_string("captured").unwrap();
|
||
// 函数把已有参数/默认值作为结果，身份不变但结果仍取得独立拥有根。
|
||
let returned = vm.call(function, &[Value::Object(value)]).unwrap();
|
||
// 归还原参数测试根，返回的 Cell 内容边仍须保活它。
|
||
vm.release(value).unwrap();
|
||
// LoadClosure 返回的是 Cell 本身，不是 Cell 当前内容。
|
||
let Value::Object(cell) = returned else {
|
||
panic!("expected cell");
|
||
};
|
||
assert_eq!(vm.cell_get(cell).unwrap(), Value::Object(value));
|
||
assert_eq!(vm.str(value).unwrap(), "captured");
|
||
// 最后 Cell 结果根归还后其内容边释放，原字符串身份应立即失效。
|
||
vm.release(cell).unwrap();
|
||
assert!(matches!(vm.object(value), Err(VmError::InvalidHandle)));
|
||
}
|
||
|
||
#[test]
|
||
fn attribute_operations_and_stack_copies_transfer_roots_without_leaks() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadFast, 1),
|
||
op(Opcode::LoadFast, 0),
|
||
op(Opcode::StoreAttr, 0),
|
||
op(Opcode::LoadFast, 0),
|
||
op(Opcode::LoadAttr, 0),
|
||
op(Opcode::Copy, 1),
|
||
op(Opcode::Swap, 2),
|
||
simple(Opcode::PopTop),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["record".into(), "value".into()],
|
||
locals: vec!["record".into(), "value".into()],
|
||
names: vec!["x".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let function = vm
|
||
.new_function("assign", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let record = vm.new_object().unwrap();
|
||
let value = vm.new_string("value").unwrap();
|
||
let returned = vm
|
||
.call(function, &[Value::Object(record), Value::Object(value)])
|
||
.unwrap();
|
||
assert_eq!(vm.ref_count(value).unwrap(), 3); // host, attribute, return value
|
||
vm.release_value(returned).unwrap();
|
||
vm.release(record).unwrap();
|
||
assert_eq!(vm.ref_count(value).unwrap(), 1);
|
||
}
|
||
|
||
#[test]
|
||
fn comparison_truth_and_forward_conditionals_use_runtime_values() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
Instruction::compare(CompareOp::Lt),
|
||
simple(Opcode::ToBool),
|
||
simple(Opcode::UnaryNot),
|
||
op(Opcode::PopJumpIfTrue, 2),
|
||
op(Opcode::LoadConst, 2),
|
||
simple(Opcode::ReturnValue),
|
||
op(Opcode::LoadConst, 3),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![text("a"), text("b"), text("less"), text("other")],
|
||
CodeLayout::default(),
|
||
);
|
||
assert_eq!(vm.execute(code, globals).unwrap(), text("less"));
|
||
}
|
||
|
||
#[test]
|
||
fn unbound_names_deleted_locals_and_invalid_null_values_fail_cleanly() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let missing = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadGlobal, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
names: vec!["missing".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
assert_eq!(
|
||
vm.execute(missing, globals),
|
||
Err(VmError::NameNotFound("missing".into()))
|
||
);
|
||
let deleted = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::StoreFast, 0),
|
||
op(Opcode::DeleteFast, 0),
|
||
op(Opcode::LoadFast, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Nil],
|
||
CodeLayout {
|
||
locals: vec!["x".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
assert_eq!(
|
||
vm.execute(deleted, globals),
|
||
Err(VmError::UnboundLocal("x".into()))
|
||
);
|
||
let null = make_code(
|
||
&mut vm,
|
||
&[simple(Opcode::PushNull), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout::default(),
|
||
);
|
||
assert!(matches!(
|
||
vm.execute(null, globals),
|
||
Err(VmError::InvalidBytecode { .. })
|
||
));
|
||
let success = return_constant(&mut vm, Value::Nil);
|
||
assert_eq!(vm.execute(success, globals).unwrap(), Value::Nil);
|
||
assert!(vm.last_traceback().is_empty());
|
||
}
|
||
|
||
#[test]
|
||
fn failed_map_construction_cleans_both_partial_map_and_temporary_input() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::BuildMap, 0),
|
||
op(Opcode::BuildMap, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Number(1_i64.into())],
|
||
CodeLayout::default(),
|
||
);
|
||
let before = vm.object_count();
|
||
assert_eq!(
|
||
vm.execute(code, globals),
|
||
Err(VmError::UnsupportedOperation("numeric hash"))
|
||
);
|
||
assert_eq!(vm.object_count(), before);
|
||
}
|
||
|
||
#[test]
|
||
fn implicit_receiver_slot_is_distinct_from_the_null_call_marker() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let function = vm
|
||
.allocate(EndorNativeFunctionObject::new("echo", echo))
|
||
.unwrap();
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
op(Opcode::Call, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Object(function), Value::Nil],
|
||
CodeLayout::default(),
|
||
);
|
||
// Nil is an actual implicit argument here, not the internal NULL marker.
|
||
assert_eq!(vm.execute(code, globals).unwrap(), Value::Nil);
|
||
}
|
||
|
||
#[test]
|
||
fn function_creation_operands_round_trip_and_require_all_inputs() {
|
||
assert_eq!(
|
||
Instruction::encode_all(&[Instruction::make_function(1, 1)]).unwrap(),
|
||
vec![255, 1, 255, 0, 28, 1]
|
||
);
|
||
assert_eq!(
|
||
Instruction::encode_all(&[Instruction::make_function(u16::MAX, u16::MAX)]).unwrap(),
|
||
vec![255, 255, 255, 255, 255, 255, 28, 255]
|
||
);
|
||
let code = EndorCode::from_instructions(
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 0),
|
||
Instruction::make_function(1, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Nil],
|
||
CodeLayout::default(),
|
||
)
|
||
.unwrap();
|
||
assert_eq!(
|
||
code.instructions()[3].instruction,
|
||
Instruction::make_function(1, 1)
|
||
);
|
||
assert_eq!(code.instructions()[3].next_offset, 6);
|
||
assert_eq!(code.stack_size(), 3);
|
||
for (defaults, closure) in [(0, 0), (1, 0), (0, 1), (1, 1), (u16::MAX, u16::MAX)] {
|
||
assert!(matches!(
|
||
EndorCode::from_instructions(
|
||
&[
|
||
Instruction::make_function(defaults, closure),
|
||
simple(Opcode::ReturnValue)
|
||
],
|
||
vec![],
|
||
CodeLayout::default(),
|
||
),
|
||
Err(VmError::InvalidBytecode { .. })
|
||
));
|
||
}
|
||
for creation in [
|
||
Instruction::make_function(1, 0),
|
||
Instruction::make_function(0, 1),
|
||
] {
|
||
assert!(
|
||
EndorCode::from_instructions(
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
creation,
|
||
simple(Opcode::ReturnValue)
|
||
],
|
||
vec![Value::Nil],
|
||
CodeLayout::default(),
|
||
)
|
||
.is_err()
|
||
);
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn bytecode_defines_global_functions_and_calls_them_with_defaults() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let inner = EndorCode::from_instructions(
|
||
&[op(Opcode::LoadFast, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["value".into()],
|
||
locals: vec!["value".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
)
|
||
.unwrap()
|
||
.with_location("identity", "functions.endor", 2);
|
||
let inner = vm.new_code(inner).unwrap();
|
||
let module = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
Instruction::make_function(1, 0),
|
||
op(Opcode::StoreGlobal, 0),
|
||
op(Opcode::LoadGlobal, 0),
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::Call, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![text("default"), Value::Object(inner)],
|
||
CodeLayout {
|
||
names: vec!["identity".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
vm.release(inner).unwrap();
|
||
assert_eq!(vm.execute(module, globals).unwrap(), text("default"));
|
||
let Some(Value::Object(first)) = vm.dict_get(globals, &text("identity")).unwrap() else {
|
||
panic!("expected a function");
|
||
};
|
||
vm.retain(first).unwrap();
|
||
let data = vm
|
||
.payload::<EndorFunctionObject>(first, "function")
|
||
.unwrap();
|
||
assert_eq!(data.name(), "identity");
|
||
assert_eq!(data.code(), inner);
|
||
assert_eq!(data.globals(), globals);
|
||
assert_eq!(
|
||
vm.call(first, &[text("explicit")]).unwrap(),
|
||
text("explicit")
|
||
);
|
||
assert_eq!(vm.execute(module, globals).unwrap(), text("default"));
|
||
let Some(Value::Object(second)) = vm.dict_get(globals, &text("identity")).unwrap() else {
|
||
panic!("expected a second function");
|
||
};
|
||
assert_ne!(first, second);
|
||
assert_eq!(
|
||
vm.payload::<EndorFunctionObject>(second, "function")
|
||
.unwrap()
|
||
.code(),
|
||
inner
|
||
);
|
||
vm.release(first).unwrap();
|
||
vm.release(module).unwrap();
|
||
vm.release(globals).unwrap();
|
||
// The global function, its code and its globals form a collectible cycle.
|
||
assert_eq!(vm.collect_cycles(), 3);
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn bytecode_function_defaults_keep_temporary_objects_alive_after_factory_returns() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let inner = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadFast, 1), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["required".into(), "defaulted".into(), "tag".into()],
|
||
locals: vec!["required".into(), "defaulted".into(), "tag".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let factory = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::BuildMap, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
op(Opcode::LoadConst, 0),
|
||
Instruction::make_function(2, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Object(inner), text("tag")],
|
||
CodeLayout::default(),
|
||
);
|
||
vm.release(inner).unwrap();
|
||
let Value::Object(function) = vm.execute(factory, globals).unwrap() else {
|
||
panic!("expected a function");
|
||
};
|
||
vm.release(factory).unwrap();
|
||
vm.release(globals).unwrap();
|
||
assert!(matches!(
|
||
vm.call(function, &[]),
|
||
Err(VmError::ArgumentCount { required: 1, .. })
|
||
));
|
||
let first = vm.call(function, &[Value::Nil]).unwrap();
|
||
let second = vm.call(function, &[Value::Nil]).unwrap();
|
||
assert_eq!(first, second); // Defaults are evaluated once per creation.
|
||
let Value::Object(default) = first else {
|
||
panic!("expected a default map");
|
||
};
|
||
assert_eq!(vm.ref_count(default).unwrap(), 3); // Function and two results.
|
||
vm.release(function).unwrap();
|
||
vm.release_value(first).unwrap();
|
||
assert_eq!(vm.ref_count(default).unwrap(), 1);
|
||
vm.release_value(second).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn bytecode_nested_functions_share_cells_and_bind_defaults_after_outer_returns() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let read = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadDeref, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
free_variables: vec!["x".into(), "sentinel".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let write = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadFast, 0),
|
||
op(Opcode::StoreDeref, 1),
|
||
op(Opcode::LoadDeref, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["value".into()],
|
||
locals: vec!["value".into()],
|
||
free_variables: vec!["x".into(), "sentinel".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let outer = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadClosure, 0),
|
||
op(Opcode::LoadClosure, 1),
|
||
op(Opcode::LoadConst, 1),
|
||
Instruction::make_function(0, 2),
|
||
op(Opcode::LoadConst, 2),
|
||
op(Opcode::LoadConst, 3),
|
||
op(Opcode::LoadClosure, 0),
|
||
op(Opcode::LoadClosure, 1),
|
||
op(Opcode::LoadConst, 4),
|
||
Instruction::make_function(1, 2),
|
||
op(Opcode::BuildMap, 2),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![
|
||
text("read"),
|
||
Value::Object(read),
|
||
text("write"),
|
||
text("default"),
|
||
Value::Object(write),
|
||
],
|
||
CodeLayout {
|
||
parameters: vec!["x".into(), "sentinel".into()],
|
||
locals: vec!["x".into(), "sentinel".into()],
|
||
cell_variables: vec!["x".into(), "sentinel".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let outer_function = vm
|
||
.new_function("outer", outer, globals, vec![], vec![])
|
||
.unwrap();
|
||
let Value::Object(pair) = vm
|
||
.call(outer_function, &[text("first"), text("sentinel")])
|
||
.unwrap()
|
||
else {
|
||
panic!("expected a function pair");
|
||
};
|
||
for reference in [read, write, outer, outer_function, globals] {
|
||
vm.release(reference).unwrap();
|
||
}
|
||
let Some(Value::Object(read)) = vm.dict_get(pair, &text("read")).unwrap() else {
|
||
panic!("expected read");
|
||
};
|
||
let Some(Value::Object(write)) = vm.dict_get(pair, &text("write")).unwrap() else {
|
||
panic!("expected write");
|
||
};
|
||
assert_eq!(
|
||
vm.payload::<EndorFunctionObject>(read, "function")
|
||
.unwrap()
|
||
.closure(),
|
||
vm.payload::<EndorFunctionObject>(write, "function")
|
||
.unwrap()
|
||
.closure(),
|
||
);
|
||
assert_eq!(vm.collect_cycles(), 0);
|
||
assert_eq!(vm.call(read, &[]).unwrap(), text("first"));
|
||
assert_eq!(vm.call(write, &[text("updated")]).unwrap(), text("updated"));
|
||
assert_eq!(vm.call(read, &[]).unwrap(), text("updated"));
|
||
assert_eq!(vm.call(write, &[]).unwrap(), text("default"));
|
||
assert_eq!(vm.call(read, &[]).unwrap(), text("default"));
|
||
vm.release(pair).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn bytecode_function_creation_rejects_bad_inputs_without_leaking_roots() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let plain = return_constant(&mut vm, Value::Nil);
|
||
let captured = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadDeref, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
free_variables: vec!["x".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let cell = vm.new_cell(None).unwrap();
|
||
let mismatch = VmError::InvalidArgument("function defaults or closure do not match code");
|
||
let cases = [
|
||
(
|
||
vec![op(Opcode::LoadConst, 0), Instruction::make_function(0, 0)],
|
||
vec![Value::Nil],
|
||
VmError::ObjectKindMismatch("code"),
|
||
),
|
||
(
|
||
vec![op(Opcode::BuildMap, 0), Instruction::make_function(0, 0)],
|
||
vec![],
|
||
VmError::ObjectKindMismatch("code"),
|
||
),
|
||
(
|
||
vec![simple(Opcode::PushNull), Instruction::make_function(0, 0)],
|
||
vec![],
|
||
invalid_null(),
|
||
),
|
||
(
|
||
vec![
|
||
op(Opcode::BuildMap, 0),
|
||
op(Opcode::LoadConst, 0),
|
||
Instruction::make_function(1, 0),
|
||
],
|
||
vec![Value::Object(plain)],
|
||
mismatch.clone(),
|
||
),
|
||
(
|
||
vec![op(Opcode::LoadConst, 0), Instruction::make_function(0, 0)],
|
||
vec![Value::Object(captured)],
|
||
mismatch.clone(),
|
||
),
|
||
(
|
||
vec![
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
Instruction::make_function(0, 1),
|
||
],
|
||
vec![Value::Object(cell), Value::Object(plain)],
|
||
mismatch,
|
||
),
|
||
(
|
||
vec![
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
Instruction::make_function(0, 1),
|
||
],
|
||
vec![Value::Nil, Value::Object(captured)],
|
||
VmError::ObjectKindMismatch("cell"),
|
||
),
|
||
(
|
||
vec![
|
||
op(Opcode::BuildMap, 0),
|
||
op(Opcode::LoadConst, 0),
|
||
Instruction::make_function(0, 1),
|
||
],
|
||
vec![Value::Object(captured)],
|
||
VmError::ObjectKindMismatch("cell"),
|
||
),
|
||
(
|
||
vec![
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::LoadConst, 0),
|
||
Instruction::make_function(0, 1),
|
||
],
|
||
vec![Value::Object(captured)],
|
||
invalid_null(),
|
||
),
|
||
(
|
||
vec![
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::LoadConst, 0),
|
||
Instruction::make_function(1, 0),
|
||
],
|
||
vec![Value::Object(plain)],
|
||
invalid_null(),
|
||
),
|
||
];
|
||
for (mut instructions, constants, expected) in cases {
|
||
instructions.push(simple(Opcode::ReturnValue));
|
||
let code = make_code(&mut vm, &instructions, constants, CodeLayout::default());
|
||
let count = vm.object_count();
|
||
let roots =
|
||
[plain, captured, cell, globals].map(|reference| vm.ref_count(reference).unwrap());
|
||
let error = vm.execute(code, globals).unwrap_err();
|
||
if matches!(expected, VmError::InvalidBytecode { .. }) {
|
||
assert!(matches!(
|
||
error,
|
||
VmError::InvalidBytecode {
|
||
reason: "NULL call marker used as a value",
|
||
..
|
||
}
|
||
));
|
||
} else {
|
||
assert_eq!(error, expected);
|
||
}
|
||
assert_eq!(vm.object_count(), count);
|
||
assert_eq!(
|
||
[plain, captured, cell, globals].map(|reference| vm.ref_count(reference).unwrap()),
|
||
roots
|
||
);
|
||
vm.release(code).unwrap();
|
||
}
|
||
for reference in [plain, captured, cell, globals] {
|
||
vm.release(reference).unwrap();
|
||
}
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
fn invalid_null() -> VmError {
|
||
VmError::InvalidBytecode {
|
||
offset: 0,
|
||
reason: "NULL call marker used as a value",
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn bytecode_functions_capture_builtins_at_creation_and_share_live_globals() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let original = vm.new_dict().unwrap();
|
||
let replacement = vm.new_dict().unwrap();
|
||
vm.dict_set(original, text("answer"), text("original"))
|
||
.unwrap();
|
||
vm.dict_set(replacement, text("answer"), text("replacement"))
|
||
.unwrap();
|
||
vm.dict_set(globals, text("__builtins__"), Value::Object(original))
|
||
.unwrap();
|
||
let inner = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadGlobal, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
names: vec!["answer".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let factory = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
Instruction::make_function(0, 0),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Object(inner)],
|
||
CodeLayout::default(),
|
||
);
|
||
let Value::Object(first) = vm.execute(factory, globals).unwrap() else {
|
||
panic!("expected first function");
|
||
};
|
||
vm.dict_set(globals, text("__builtins__"), Value::Object(replacement))
|
||
.unwrap();
|
||
let Value::Object(second) = vm.execute(factory, globals).unwrap() else {
|
||
panic!("expected second function");
|
||
};
|
||
for reference in [original, replacement, factory, inner, globals] {
|
||
vm.release(reference).unwrap();
|
||
}
|
||
assert_eq!(vm.call(first, &[]).unwrap(), text("original"));
|
||
assert_eq!(vm.call(second, &[]).unwrap(), text("replacement"));
|
||
vm.dict_set(globals, text("answer"), text("global"))
|
||
.unwrap();
|
||
assert_eq!(vm.call(first, &[]).unwrap(), text("global"));
|
||
assert_eq!(vm.call(second, &[]).unwrap(), text("global"));
|
||
vm.release(first).unwrap();
|
||
vm.release(second).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn later_execution_failure_releases_a_new_function_and_its_temporary_default() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let inner = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadFast, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
parameters: vec!["value".into()],
|
||
locals: vec!["value".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let fail = vm
|
||
.allocate(EndorNativeFunctionObject::new("fail", fail))
|
||
.unwrap();
|
||
let factory = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
simple(Opcode::PushNull),
|
||
op(Opcode::BuildMap, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
Instruction::make_function(1, 0),
|
||
op(Opcode::Call, 1),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Object(fail), Value::Object(inner)],
|
||
CodeLayout::default(),
|
||
);
|
||
vm.release(fail).unwrap();
|
||
vm.release(inner).unwrap();
|
||
let count = vm.object_count();
|
||
assert_eq!(
|
||
vm.execute(factory, globals),
|
||
Err(VmError::InvalidArgument("host failure"))
|
||
);
|
||
assert_eq!(vm.object_count(), count);
|
||
vm.release(factory).unwrap();
|
||
vm.release(globals).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn suspended_read_only_call_keeps_roots_and_releases_them_on_completion() {
|
||
use endor_core::ExecutionProgress;
|
||
let mut vm = Vm::new().unwrap();
|
||
let shared = vm.new_object().unwrap();
|
||
vm.set_attr(shared, "value", Value::Number(7_i64.into()))
|
||
.unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let mut instructions = vec![simple(Opcode::Nop); 16];
|
||
instructions.extend([op(Opcode::LoadConst, 0), simple(Opcode::ReturnValue)]);
|
||
let code = make_code(
|
||
&mut vm,
|
||
&instructions,
|
||
vec![Value::Object(shared)],
|
||
CodeLayout::default(),
|
||
);
|
||
let function = vm
|
||
.new_function("sliced", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let mut progress = vm
|
||
.start_read_only_call(
|
||
function,
|
||
&[],
|
||
ExecutionLimits {
|
||
max_frames: 8,
|
||
max_instructions: 100,
|
||
},
|
||
1,
|
||
)
|
||
.unwrap();
|
||
assert!(matches!(
|
||
progress,
|
||
ExecutionProgress::Pending { instructions: 1 }
|
||
));
|
||
assert!(
|
||
vm.set_attr(shared, "value", Value::Number(8_i64.into()))
|
||
.is_err()
|
||
);
|
||
assert!(vm.call(function, &[]).is_err());
|
||
vm.release(function).unwrap();
|
||
vm.release(code).unwrap();
|
||
vm.release(globals).unwrap();
|
||
vm.release(shared).unwrap();
|
||
vm.collect_cycles();
|
||
loop {
|
||
match progress {
|
||
ExecutionProgress::Pending { .. } => progress = vm.resume_read_only_call(2).unwrap(),
|
||
ExecutionProgress::Complete {
|
||
value,
|
||
instructions,
|
||
..
|
||
} => {
|
||
assert_eq!(instructions, 18);
|
||
assert_eq!(value, Value::Object(shared));
|
||
assert_eq!(
|
||
vm.get_attr(shared, "value").unwrap(),
|
||
Value::Number(7_i64.into())
|
||
);
|
||
vm.release_value(value).unwrap();
|
||
break;
|
||
}
|
||
}
|
||
}
|
||
assert!(!vm.has_suspended_call());
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn suspended_call_cancellation_and_total_budget_restore_read_only_state() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let shared = vm.new_object().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let mut instructions = vec![simple(Opcode::Nop); 8];
|
||
instructions.extend([op(Opcode::LoadConst, 0), simple(Opcode::ReturnValue)]);
|
||
let code = make_code(
|
||
&mut vm,
|
||
&instructions,
|
||
vec![Value::Object(shared)],
|
||
CodeLayout::default(),
|
||
);
|
||
let function = vm
|
||
.new_function("budget", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let roots = vm.ref_count(function).unwrap();
|
||
vm.start_read_only_call(
|
||
function,
|
||
&[],
|
||
ExecutionLimits {
|
||
max_frames: 8,
|
||
max_instructions: 3,
|
||
},
|
||
1,
|
||
)
|
||
.unwrap();
|
||
assert!(vm.resume_read_only_call(0).is_err());
|
||
assert!(vm.has_suspended_call());
|
||
vm.resume_read_only_call(1).unwrap();
|
||
assert_eq!(
|
||
vm.resume_read_only_call(1).unwrap_err(),
|
||
VmError::ExecutionLimit("instructions")
|
||
);
|
||
assert!(!vm.has_suspended_call());
|
||
assert_eq!(vm.ref_count(function).unwrap(), roots);
|
||
vm.set_attr(shared, "after", Value::Bool(true)).unwrap();
|
||
vm.start_read_only_call(function, &[], ExecutionLimits::default(), 1)
|
||
.unwrap();
|
||
assert!(vm.cancel_read_only_call().unwrap());
|
||
assert!(!vm.cancel_read_only_call().unwrap());
|
||
assert_eq!(vm.ref_count(function).unwrap(), roots);
|
||
vm.set_attr(shared, "after", Value::Bool(false)).unwrap();
|
||
vm.release(function).unwrap();
|
||
vm.release(code).unwrap();
|
||
vm.release(globals).unwrap();
|
||
vm.release(shared).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn managed_coroutines_interleave_without_replaying_writes() {
|
||
use endor_core::CoroutineProgress;
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::StoreGlobal, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
op(Opcode::StoreGlobal, 1),
|
||
op(Opcode::LoadConst, 2),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![text("first"), text("second"), Value::Nil],
|
||
CodeLayout {
|
||
names: vec!["x".into(), "y".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let function = vm
|
||
.new_function("work", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let first = vm
|
||
.new_coroutine(function, &[], ExecutionLimits::default())
|
||
.unwrap();
|
||
let second = vm
|
||
.new_coroutine(function, &[], ExecutionLimits::default())
|
||
.unwrap();
|
||
assert!(matches!(
|
||
vm.resume_coroutine(first, 2).unwrap(),
|
||
CoroutineProgress::Pending { instructions: 2 }
|
||
));
|
||
assert!(matches!(
|
||
vm.resume_coroutine(second, 2).unwrap(),
|
||
CoroutineProgress::Pending { instructions: 2 }
|
||
));
|
||
vm.dict_set(globals, text("x"), text("interleaved"))
|
||
.unwrap();
|
||
assert!(matches!(
|
||
vm.resume_coroutine(first, 16).unwrap(),
|
||
CoroutineProgress::Complete {
|
||
value: Value::Nil,
|
||
instructions: 6
|
||
}
|
||
));
|
||
assert_eq!(
|
||
vm.dict_get(globals, &text("x")).unwrap(),
|
||
Some(text("interleaved"))
|
||
);
|
||
assert_eq!(
|
||
vm.dict_get(globals, &text("y")).unwrap(),
|
||
Some(text("second"))
|
||
);
|
||
assert!(vm.cancel_coroutine(second).unwrap());
|
||
assert!(!vm.cancel_coroutine(second).unwrap());
|
||
assert!(vm.resume_coroutine(first, 1).is_err());
|
||
for object in [first, second, function, code, globals] {
|
||
vm.release(object).unwrap();
|
||
}
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn parked_coroutine_cycles_are_collectable_without_cancellation() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let code = return_constant(&mut vm, Value::Nil);
|
||
let function = vm
|
||
.new_function("cycle", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let coroutine = vm
|
||
.new_coroutine(function, &[], ExecutionLimits::default())
|
||
.unwrap();
|
||
vm.dict_set(globals, text("task"), Value::Object(coroutine))
|
||
.unwrap();
|
||
for object in [coroutine, function, code, globals] {
|
||
vm.release(object).unwrap();
|
||
}
|
||
assert!(vm.collect_cycles() > 0);
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn managed_coroutine_hard_budget_accumulates_and_error_releases_frames() {
|
||
use endor_core::CoroutineProgress;
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
// Reaching ReturnValue at the limit succeeds; keep a third instruction
|
||
// beyond the hard limit to exercise failure before the next Pending yield.
|
||
let code = vm
|
||
.new_code(
|
||
EndorCode::from_instructions(
|
||
&[
|
||
Instruction::simple(Opcode::Nop),
|
||
Instruction::new(Opcode::LoadConst, 0),
|
||
Instruction::simple(Opcode::ReturnValue),
|
||
],
|
||
vec![Value::Nil],
|
||
CodeLayout::default(),
|
||
)
|
||
.unwrap(),
|
||
)
|
||
.unwrap();
|
||
let function = vm
|
||
.new_function("limited", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let coroutine = vm
|
||
.new_coroutine(
|
||
function,
|
||
&[],
|
||
ExecutionLimits {
|
||
max_frames: 4,
|
||
// The second resume reaches the cumulative limit before
|
||
// the third instruction, without replaying the first.
|
||
max_instructions: 2,
|
||
},
|
||
)
|
||
.unwrap();
|
||
assert!(matches!(
|
||
vm.resume_coroutine(coroutine, 1).unwrap(),
|
||
CoroutineProgress::Pending { instructions: 1 }
|
||
));
|
||
assert!(matches!(
|
||
vm.resume_coroutine(coroutine, 1),
|
||
Err(VmError::ExecutionLimit("instructions"))
|
||
));
|
||
assert!(!vm.last_traceback().is_empty());
|
||
assert!(!vm.cancel_coroutine(coroutine).unwrap());
|
||
for object in [coroutine, function, code, globals] {
|
||
vm.release(object).unwrap();
|
||
}
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[derive(Debug)]
|
||
struct AwaitGate {
|
||
ready: Arc<std::sync::atomic::AtomicBool>,
|
||
value: Value,
|
||
}
|
||
impl ObjectPayload for AwaitGate {
|
||
fn as_any(&self) -> &dyn Any {
|
||
self
|
||
}
|
||
fn kind_name(&self) -> &'static str {
|
||
"await-gate"
|
||
}
|
||
fn trace(&self, visit: &mut dyn FnMut(ObjectRef)) {
|
||
if let Value::Object(reference) = self.value {
|
||
visit(reference);
|
||
}
|
||
}
|
||
fn poll_await(&self) -> Result<endor_core::AwaitPoll, VmError> {
|
||
Ok(if self.ready.load(Ordering::Acquire) {
|
||
endor_core::AwaitPoll::Ready(self.value.clone())
|
||
} else {
|
||
endor_core::AwaitPoll::Pending
|
||
})
|
||
}
|
||
}
|
||
|
||
#[test]
|
||
fn await_keeps_operand_and_owned_object_result_without_replaying_prefix() {
|
||
use endor_core::CoroutineProgress;
|
||
let mut vm = Vm::new().unwrap();
|
||
let ready = Arc::new(std::sync::atomic::AtomicBool::new(false));
|
||
let value = vm.new_object().unwrap();
|
||
vm.set_attr(value, "marker", text("kept")).unwrap();
|
||
let gate = vm
|
||
.allocate(AwaitGate {
|
||
ready: ready.clone(),
|
||
value: Value::Object(value),
|
||
})
|
||
.unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[
|
||
op(Opcode::LoadConst, 0),
|
||
op(Opcode::StoreGlobal, 0),
|
||
op(Opcode::LoadConst, 1),
|
||
simple(Opcode::Await),
|
||
simple(Opcode::ReturnValue),
|
||
],
|
||
vec![text("prefix"), Value::Object(gate)],
|
||
CodeLayout {
|
||
names: vec!["step".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let function = vm
|
||
.new_function("awaited", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let coroutine = vm
|
||
.new_coroutine(function, &[], ExecutionLimits::default())
|
||
.unwrap();
|
||
assert!(
|
||
matches!(vm.resume_coroutine(coroutine, 64).unwrap(), CoroutineProgress::Waiting { awaitable, .. } if awaitable == gate)
|
||
);
|
||
vm.release(value).unwrap();
|
||
vm.release(gate).unwrap();
|
||
vm.dict_set(globals, text("step"), text("interleaved"))
|
||
.unwrap();
|
||
vm.collect_cycles();
|
||
ready.store(true, Ordering::Release);
|
||
let CoroutineProgress::Complete { value: result, .. } =
|
||
vm.resume_coroutine(coroutine, 64).unwrap()
|
||
else {
|
||
panic!("ready await must complete")
|
||
};
|
||
assert_eq!(
|
||
vm.dict_get(globals, &text("step")).unwrap(),
|
||
Some(text("interleaved"))
|
||
);
|
||
for object in [coroutine, function, code, globals] {
|
||
vm.release(object).unwrap();
|
||
}
|
||
let Value::Object(reference) = result else {
|
||
panic!("owned object result")
|
||
};
|
||
assert_eq!(vm.get_attr(reference, "marker").unwrap(), text("kept"));
|
||
vm.release_value(result).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|
||
|
||
#[test]
|
||
fn named_reads_ignore_unrelated_globals_but_track_missing_shadow_and_payload_kind() {
|
||
let mut vm = Vm::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
let builtins = vm.new_dict().unwrap();
|
||
vm.dict_set(builtins, text("name"), text("builtin"))
|
||
.unwrap();
|
||
vm.dict_set(globals, text("__builtins__"), Value::Object(builtins))
|
||
.unwrap();
|
||
let code = make_code(
|
||
&mut vm,
|
||
&[op(Opcode::LoadGlobal, 0), simple(Opcode::ReturnValue)],
|
||
vec![],
|
||
CodeLayout {
|
||
names: vec!["name".into()],
|
||
..CodeLayout::default()
|
||
},
|
||
);
|
||
let function = vm
|
||
.new_function("read-name", code, globals, vec![], vec![])
|
||
.unwrap();
|
||
let endor_core::ExecutionProgress::Complete {
|
||
value,
|
||
reads,
|
||
dependencies,
|
||
..
|
||
} = vm
|
||
.start_read_only_call(function, &[], ExecutionLimits::default(), 64)
|
||
.unwrap()
|
||
else {
|
||
panic!("complete")
|
||
};
|
||
assert_eq!(value, text("builtin"));
|
||
assert!(reads.contains(&globals) && reads.contains(&builtins));
|
||
vm.release_value(value).unwrap();
|
||
vm.dict_set(globals, text("_"), text("unrelated")).unwrap();
|
||
let (value, synchronous) = vm
|
||
.call_read_only_precise_with_limits(function, &[], ExecutionLimits::default())
|
||
.unwrap();
|
||
assert_eq!(value, text("builtin"));
|
||
assert_eq!(synchronous.dependencies, dependencies);
|
||
assert_eq!(synchronous.objects, reads);
|
||
vm.release_value(value).unwrap();
|
||
let (value, conservative) = vm
|
||
.call_read_only_with_limits(function, &[], ExecutionLimits::default())
|
||
.unwrap();
|
||
assert_eq!(conservative, reads);
|
||
vm.release_value(value).unwrap();
|
||
assert!(
|
||
dependencies
|
||
.iter()
|
||
.all(|dependency| vm.object_store().read_dependency_valid(dependency))
|
||
);
|
||
vm.dict_set(globals, text("name"), text("shadow")).unwrap();
|
||
assert!(
|
||
dependencies
|
||
.iter()
|
||
.any(|dependency| !vm.object_store().read_dependency_valid(dependency))
|
||
);
|
||
vm.dict_delete(globals, &text("name")).unwrap();
|
||
assert!(
|
||
dependencies
|
||
.iter()
|
||
.all(|dependency| vm.object_store().read_dependency_valid(dependency))
|
||
);
|
||
vm.dict_set(builtins, text("name"), text("changed"))
|
||
.unwrap();
|
||
assert!(
|
||
dependencies
|
||
.iter()
|
||
.any(|dependency| !vm.object_store().read_dependency_valid(dependency))
|
||
);
|
||
for object in [function, code, globals, builtins] {
|
||
vm.release(object).unwrap();
|
||
}
|
||
assert_eq!(vm.object_count(), 0);
|
||
assert!(
|
||
dependencies
|
||
.iter()
|
||
.any(|dependency| !vm.object_store().read_dependency_valid(dependency))
|
||
);
|
||
}
|
||
|
||
#[test]
|
||
fn precise_nested_regions_replay_borrowed_dependencies_without_hiding_full_dict_reads() {
|
||
let mut vm = endor_core::ObjectStore::new().unwrap();
|
||
let globals = vm.new_dict().unwrap();
|
||
vm.dict_set(globals, text("name"), text("value")).unwrap();
|
||
let scope = vm.begin_read_only();
|
||
let token = vm.begin_read_tracking().unwrap();
|
||
vm.dict_get_name(globals, "name").unwrap();
|
||
let tracked = vm.end_read_tracking_precise(token).unwrap();
|
||
assert!(
|
||
tracked
|
||
.accesses
|
||
.iter()
|
||
.any(|access| access.object == globals)
|
||
);
|
||
for dependency in &tracked.dependencies {
|
||
assert!(vm.read_dependency_valid(dependency));
|
||
}
|
||
let reads = vm.end_read_only_precise(scope).unwrap();
|
||
vm.dict_set(globals, text("other"), Value::Nil).unwrap();
|
||
assert!(
|
||
reads
|
||
.dependencies
|
||
.iter()
|
||
.all(|dependency| vm.read_dependency_valid(dependency))
|
||
);
|
||
let scope = vm.begin_read_only();
|
||
vm.dict_items(globals).unwrap();
|
||
let reads = vm.end_read_only_precise(scope).unwrap();
|
||
vm.dict_set(globals, text("third"), Value::Nil).unwrap();
|
||
assert!(
|
||
reads
|
||
.dependencies
|
||
.iter()
|
||
.any(|dependency| !vm.read_dependency_valid(dependency))
|
||
);
|
||
vm.release(globals).unwrap();
|
||
assert_eq!(vm.object_count(), 0);
|
||
}
|