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comparison: js/src/jit-test/tests/debug/Environment-identity-01.js
js/src/jit-test/tests/debug/Environment-identity-01.js
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- 6474c204b198
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| -1:000000000000 | 0:e1860608a072 |
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| 1 // The value of frame.environment is the same Environment object at different | |
| 2 // times within a single visit to a scope. | |
| 3 | |
| 4 var g = newGlobal(); | |
| 5 var dbg = Debugger(g); | |
| 6 g.eval("function h() { debugger; }"); | |
| 7 var hits, env; | |
| 8 dbg.onDebuggerStatement = function (hframe) { | |
| 9 var frame = hframe.older; | |
| 10 var e = frame.environment; | |
| 11 | |
| 12 // frame.environment is at least cached from one moment to the next. | |
| 13 assertEq(e, frame.environment); | |
| 14 | |
| 15 // frame.environment is cached from statement to statement within a call frame. | |
| 16 if (env === undefined) | |
| 17 env = e; | |
| 18 else | |
| 19 assertEq(e, env); | |
| 20 | |
| 21 hits++; | |
| 22 }; | |
| 23 | |
| 24 hits = 0; | |
| 25 env = undefined; | |
| 26 g.eval("function f() { (function () { var i = 0; h(); var j = 2; h(); })(); }"); | |
| 27 g.f(); | |
| 28 assertEq(hits, 2); | |
| 29 | |
| 30 hits = 0; | |
| 31 env = undefined; | |
| 32 g.eval("function f2() { { let i = 0; h(); let j = 2; h(); } }"); | |
| 33 g.f2(); | |
| 34 assertEq(hits, 2); | |
| 35 | |
| 36 hits = 0; | |
| 37 env = undefined; | |
| 38 g.eval("function f3() { { let i; for (i = 0; i < 2; i++) h(); } }"); | |
| 39 g.f3(); | |
| 40 assertEq(hits, 2); |
