tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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load-nonsyntactic.js (1445B)

      1 var nonSyntacticEnvironment = { field: 10 };
      2 
      3 var source = `
      4 function f() {
      5    function g() {
      6        function h() {
      7            // Load out of non syntactic environment.
      8            return field;
      9        }
     10        return h();
     11    }
     12    return g();
     13 }
     14 
     15 f()`
     16 
     17 function check(before, after) {
     18    var code = cacheEntry(source);
     19    var res = evaluate(code, before);
     20    assertEq(res, 10);
     21    res = evaluate(code, after);
     22    assertEq(res, 10);
     23 }
     24 
     25 
     26 check({ envChainObject: nonSyntacticEnvironment, saveBytecodeWithDelazifications: true, },
     27    { envChainObject: nonSyntacticEnvironment, loadBytecode: true })
     28 
     29 
     30 try {
     31    var global = newGlobal();
     32    global.field = 10;
     33    check({ envChainObject: nonSyntacticEnvironment, saveBytecodeWithDelazifications: true, },
     34        { global: global, loadBytecode: true })
     35 
     36    // Should have thrown
     37    assertEq(false, true)
     38 } catch (e) {
     39    assertEq(/Incompatible cache contents/.test(e.message), true);
     40 }
     41 
     42 try {
     43    check({ global: global, saveBytecodeWithDelazifications: true },
     44        { envChainObject: nonSyntacticEnvironment, loadBytecode: true })
     45 
     46    // Should have thrown
     47    assertEq(false, true)
     48 } catch (e) {
     49    assertEq(/Incompatible cache contents/.test(e.message), true);
     50 }
     51 
     52 
     53 var nonSyntacticEnvironmentTwo = { field: 10 };
     54 check({ envChainObject: nonSyntacticEnvironment, saveBytecodeWithDelazifications: true, },
     55    { envChainObject: nonSyntacticEnvironmentTwo, loadBytecode: true })