js/src/jit-test/tests/debug/Frame-onStep-04.js

Sat, 03 Jan 2015 20:18:00 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Sat, 03 Jan 2015 20:18:00 +0100
branch
TOR_BUG_3246
changeset 7
129ffea94266
permissions
-rw-r--r--

Conditionally enable double key logic according to:
private browsing mode or privacy.thirdparty.isolate preference and
implement in GetCookieStringCommon and FindCookie where it counts...
With some reservations of how to convince FindCookie users to test
condition and pass a nullptr when disabling double key logic.

michael@0 1 // When a recursive function has many frames on the stack, onStep may be set or
michael@0 2 // not independently on each frame.
michael@0 3
michael@0 4 var g = newGlobal();
michael@0 5 g.eval("function f(x) {\n" +
michael@0 6 " if (x > 0)\n" +
michael@0 7 " f(x - 1);\n" +
michael@0 8 " else\n" +
michael@0 9 " debugger;\n" +
michael@0 10 " return x;\n" +
michael@0 11 "}");
michael@0 12
michael@0 13 var dbg = Debugger(g);
michael@0 14 var seen = [0, 0, 0, 0, 0, 0, 0, 0];
michael@0 15 function step() {
michael@0 16 seen[this.arguments[0]] = 1;
michael@0 17 }
michael@0 18 dbg.onEnterFrame = function (frame) {
michael@0 19 // Turn on stepping for even-numbered frames.
michael@0 20 var x = frame.arguments[0];
michael@0 21 if (x % 2 === 0)
michael@0 22 frame.onStep = step;
michael@0 23 };
michael@0 24 dbg.onDebuggerStatement = function (frame) {
michael@0 25 // This is called with 8 call frames on the stack, 7 down to 0.
michael@0 26 // At this point we should have seen all the even-numbered frames.
michael@0 27 assertEq(seen.join(""), "10101010");
michael@0 28
michael@0 29 // Now reset seen to see which frames fire onStep on the way out.
michael@0 30 seen = [0, 0, 0, 0, 0, 0, 0, 0];
michael@0 31 };
michael@0 32
michael@0 33 g.f(7);
michael@0 34 assertEq(seen.join(""), "10101010");

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