mirror of
https://github.com/pjh456/OxideJS.git
synced 2026-10-24 02:31:13 +08:00
101 lines
4.3 KiB
Rust
101 lines
4.3 KiB
Rust
//! 模块命名空间 @@toStringTag Symbol 键与自身键枚举口径：
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//! 命名空间标签以 well-known symbol 键写入，`Reflect.ownKeys` 的 Symbol 段跟在
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//! 字符串段之后，字符串枚举面（getOwnPropertyNames / Object.keys）不受污染。
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use std::sync::Arc;
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use oxide_compiler::compiler::Compiler;
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use oxide_emit::module::{ModuleKind, ModuleSourceLoader, ResolvedModule};
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use oxide_vm::vm::Vm;
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/// 文件加载器：base_dir/specifier join 后读源（依赖模块经真实文件解析）。
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struct FileLoader;
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impl ModuleSourceLoader for FileLoader {
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fn resolve(
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&mut self, base_dir: &str, specifier: &str, _attributes: &[(&str, &str)],
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) -> Result<ResolvedModule, String> {
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let full = std::path::Path::new(base_dir).join(specifier);
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let source = std::fs::read_to_string(&full).map_err(|e| format!("cannot read {specifier}: {e}"))?;
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Ok(ResolvedModule {
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source,
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path: full.to_string_lossy().into_owned(),
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kind: ModuleKind::Js,
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})
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}
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}
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/// 测试结束删除临时目录，避免在 crate 树残留文件。
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struct Cleanup(std::path::PathBuf);
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impl Drop for Cleanup {
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fn drop(&mut self) {
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let _ = std::fs::remove_dir_all(&self.0);
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}
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}
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/// 同一 VM 续跑脚本并返回字符串完成值（读 global 探针用）。
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fn probe_str(vm: &mut Vm, source: &str) -> String {
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let allocator = oxide_parser::Allocator::default();
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let program = oxide_parser::parse(&allocator, source).expect("parse");
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let module = Compiler::new().compile(&program).expect("compile");
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let value = vm.run(&Arc::new(module)).expect("probe run");
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vm.lookup_str(value).unwrap_or_default()
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}
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/// 编译并运行带依赖的模块，返回其探针字符串。
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fn run_namespace_module(dir: &std::path::Path) -> String {
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let allocator = oxide_parser::Allocator::default();
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let source = std::fs::read_to_string(dir.join("main.mjs")).expect("read main");
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let program = oxide_parser::parse_module(&allocator, &source).expect("parse module");
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let module = Compiler::new()
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.compile_module(&program, dir.join("main.mjs").to_string_lossy().as_ref(), &mut FileLoader)
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.expect("compile module");
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let mut vm = Vm::new();
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vm.run(&Arc::new(module)).expect("module run");
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probe_str(&mut vm, "globalThis.__ns")
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}
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#[test]
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fn namespace_to_string_tag_symbol_key_and_own_keys() {
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// 命名空间标签按 Symbol.toStringTag Symbol 键暴露：描述符值/属性正确，
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// 字符串导出按 UTF-16 单元序排序，Symbol 段排在字符串段之后，
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// 字符串枚举面不含标签。
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let cwd = std::env::current_dir().expect("cwd");
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let dir = cwd.join("__module_namespace__");
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std::fs::create_dir_all(&dir).expect("mkdir");
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std::fs::write(dir.join("dep.mjs"), "export const b = 1;\nexport const a = 2;\nexport default 3;")
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.expect("write dep");
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std::fs::write(
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dir.join("main.mjs"),
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"import * as ns from './dep.mjs';\n \
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var desc = Object.getOwnPropertyDescriptor(ns, Symbol.toStringTag);\n \
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globalThis.__ns = [\n \
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ns[Symbol.toStringTag],\n \
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typeof ns[Symbol.toStringTag],\n \
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Object.prototype.toString.call(ns),\n \
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Object.getOwnPropertySymbols(ns).length,\n \
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Object.getOwnPropertySymbols(ns)[0] === Symbol.toStringTag,\n \
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Object.getOwnPropertyNames(ns).length,\n \
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Object.getOwnPropertyNames(ns).join(','),\n \
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Reflect.ownKeys(ns).length,\n \
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Reflect.ownKeys(ns).indexOf(Symbol.toStringTag),\n \
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Symbol.toStringTag in ns,\n \
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Reflect.has(ns, Symbol.toStringTag),\n \
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Object.prototype.hasOwnProperty.call(ns, Symbol.toStringTag),\n \
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desc.writable,\n \
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desc.enumerable,\n \
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desc.configurable,\n \
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Object.getOwnPropertyNames(ns).indexOf('@@toStringTag'),\n \
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Object.keys(ns).length,\n \
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].join('|');",
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)
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.expect("write main");
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let _cleanup = Cleanup(dir.clone());
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let result = run_namespace_module(&dir);
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assert_eq!(
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result, "Module|string|[object Module]|1|true|3|a,b,default|4|3|true|true|true|false|false|false|-1|3",
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"命名空间标签 Symbol 键与自身键枚举面不符"
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);
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}
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