爱特每羊队
123 lines
3.6 KiB
Rust
123 lines
3.6 KiB
Rust
use oxide_compiler::compiler::Compiler;
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use oxide_parser::Allocator;
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use oxide_vm::vm::Vm;
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fn eval(source: &str) -> String {
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let allocator = Allocator::default();
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let program = match oxide_parser::parse(&allocator, source) {
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Ok(p) => p,
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Err(e) => return format!("parse error: {}", e[0].message),
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};
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let module = match Compiler::new().compile(&program) {
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Ok(m) => m,
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Err(e) => return format!("compile error: {e}"),
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};
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let mut vm = Vm::new();
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match vm.run(&module) {
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Ok(result) => format!("{result}"),
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Err(e) => format!("vm error: {e}"),
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}
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}
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// 非简单 `??`（带副作用操作数）后跟带标签的构造不得把下游 label id 移位
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// （否则 emit 期报 `Label ... not found`）。
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#[test]
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fn coalesce_nonsimple_then_if() {
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assert_eq!(
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eval("function a(){return null;} function b(){return 2;} var v=a()??b(); if(v>0){v=v+10;} v"),
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"12"
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);
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}
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#[test]
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fn coalesce_nonsimple_then_while() {
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assert_eq!(
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eval("function a(){return null;} function b(){return 3;} var v=a()??b(); var c=0; while(c<v){c=c+1;} c"),
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"3"
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);
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}
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// 含跳转的构造（if/loop）后跟被提升的函数声明：
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// 计数 pass 必须与 emit pass 采用相同的函数提升顺序，
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// 否则构造的跳转目标越过提升的函数体，程序运行时无限循环。
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#[test]
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fn if_then_hoisted_function() {
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assert_eq!(eval("if(false){} function f(){return 1} f()"), "1");
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}
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#[test]
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fn for_of_then_hoisted_function() {
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assert_eq!(eval("var r=0; for(const x of [1,2,3]) r+=x; function f(){return 100} r + f()"), "106");
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}
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#[test]
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fn while_then_hoisted_function() {
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assert_eq!(eval("var n=0; while(n<3){n=n+1;} function f(){return 100} n + f()"), "103");
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}
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// 提升的函数声明先于它闭包的 `var` 语句发射，
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// 因此计数 pass 必须同时登记顶层 `var` 名（不只是函数名）；
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// 否则提升的函数体无法解析外层 var（"Identifier not defined"）。
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#[test]
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fn hoisted_function_reads_outer_var() {
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assert_eq!(eval("var s=3; function f(){return s} f()"), "3");
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}
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#[test]
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fn hoisted_function_reads_outer_var_and_function() {
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assert_eq!(eval("var s=3; function g(){return 5} function f(){return g()+s} f()"), "8");
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}
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#[test]
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fn coalesce_nonsimple_then_for() {
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assert_eq!(
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eval("function a(){return null;} var v=a()??4; var s=0; for(var i=0;i<v;i=i+1){s=s+i;} s"),
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"6"
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);
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}
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#[test]
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fn coalesce_nonsimple_short_circuits_on_value() {
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// 0 不是 nullish，因此 `a() ?? b()` 为 0，循环不会运行。
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assert_eq!(
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eval("function a(){return 0;} function b(){return 9;} var v=a()??b(); var c=0; while(c<v){c=c+1;} c"),
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"0"
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);
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}
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// 静态成员复合赋值不得相对 emitter 多计（多出的 +1 会漂移其后循环的跳转目标）。
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#[test]
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fn static_member_compound_assign_then_loop() {
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assert_eq!(eval("var o={x:1}; o.x+=2; var c=0; while(c<3){c=c+1;} c"), "3");
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}
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#[test]
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fn static_member_compound_assign_in_loop() {
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assert_eq!(eval("var o={x:0}; var c=0; while(o.x<3){o.x+=1; c=c+1;} c"), "3");
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}
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// 回归：简单 coalesce、嵌套 coalesce、And/Or、复合成员值、普通赋值。
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#[test]
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fn simple_coalesce_regression() {
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assert_eq!(eval("var x = null ?? 5; x"), "5");
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}
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#[test]
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fn nested_coalesce_regression() {
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assert_eq!(eval("function a(){return null;} var v = a() ?? a() ?? 7; v"), "7");
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}
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#[test]
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fn logical_and_nonsimple_regression() {
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assert_eq!(eval("function a(){return 1;} function b(){return 2;} var v=a()&&b(); if(v>0){} v"), "2");
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}
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#[test]
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fn compound_member_value_regression() {
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assert_eq!(eval("var o={x:10}; o.x-=3; o.x"), "7");
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}
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