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js/src/jit-test/tests/debug/Environment-identity-02.js@6474c204b198 (annotated)

js/src/jit-test/tests/debug/Environment-identity-02.js

Wed, 31 Dec 2014 06:09:35 +0100

author

Michael Schloh von Bennewitz <michael@schloh.com>

date

Wed, 31 Dec 2014 06:09:35 +0100

changeset 0

6474c204b198

permissions

-rw-r--r--

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0	1	// frame.environment is different for different activations of a scope.
michael@0	2
michael@0	3	var g = newGlobal();
michael@0	4	var dbg = Debugger(g);
michael@0	5	g.eval("function h() { debugger; }");
michael@0	6	var arr;
michael@0	7	dbg.onDebuggerStatement = function (hframe) {
michael@0	8	var e = hframe.older.environment;
michael@0	9	assertEq(arr.indexOf(e), -1);
michael@0	10	arr.push(e);
michael@0	11	};
michael@0	12
michael@0	13	function test(code, expectedHits) {
michael@0	14	arr = [];
michael@0	15	g.eval(code);
michael@0	16	assertEq(arr.length, expectedHits);
michael@0	17	}
michael@0	18
michael@0	19	// two separate calls to a function
michael@0	20	test("(function () { var f = function (a) { h(); return a; }; f(1); f(2); })();", 2);
michael@0	21
michael@0	22	// recursive calls to a function
michael@0	23	test("(function f(n) { h(); return n < 2 ? 1 : n * f(n - 1); })(3);", 3);
michael@0	24
michael@0	25	// separate visits to a block in the same call frame
michael@0	26	test("(function () { for (var i = 0; i < 3; i++) { let j = i * 4; h(); }})();", 3);
michael@0	27
michael@0	28	// two strict direct eval calls in the same function scope
michael@0	29	test("(function () { 'use strict'; for (var i = 0; i < 3; i++) eval('h();'); })();", 3);