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js/src/jit-test/tests/debug/Script-getLineOffsets-04.js@6474c204b198 (annotated)

js/src/jit-test/tests/debug/Script-getLineOffsets-04.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	// getLineOffsets works with instructions reachable only by breaking out of a loop or switch.
michael@0	2
michael@0	3	var g = newGlobal();
michael@0	4	g.line0 = null;
michael@0	5	var dbg = Debugger(g);
michael@0	6	var where;
michael@0	7	dbg.onDebuggerStatement = function (frame) {
michael@0	8	var s = frame.eval("f").return.script;
michael@0	9	var lineno = g.line0 + where;
michael@0	10	var offs = s.getLineOffsets(lineno);
michael@0	11	for (var i = 0; i < offs.length; i++) {
michael@0	12	assertEq(s.getOffsetLine(offs[i]), lineno);
michael@0	13	s.setBreakpoint(offs[i], {hit: function () { g.log += 'B'; }});
michael@0	14	}
michael@0	15	g.log += 'A';
michael@0	16	};
michael@0	17
michael@0	18	function test(s) {
michael@0	19	var count = (s.split(/\n/).length - 1); // number of newlines in s
michael@0	20	g.log = '';
michael@0	21	where = 3 + count + 1;
michael@0	22	g.eval("line0 = Error().lineNumber;\n" +
michael@0	23	"debugger;\n" + // line0 + 1
michael@0	24	"function f(i) {\n" + // line0 + 2
michael@0	25	s + // line0 + 3 ... line0 + where - 2
michael@0	26	" log += '?';\n" + // line0 + where - 1
michael@0	27	" log += '!';\n" + // line0 + where
michael@0	28	"}\n");
michael@0	29	g.f(0);
michael@0	30	assertEq(g.log, 'A?B!');
michael@0	31	}
michael@0	32
michael@0	33	test("i = 128;\n" +
michael@0	34	"for (;;) {\n" +
michael@0	35	" var x = i - 10;;\n" +
michael@0	36	" if (x < 0)\n" +
michael@0	37	" break;\n" +
michael@0	38	" i >>= 2;\n" +
michael@0	39	"}\n");
michael@0	40
michael@0	41	test("while (true)\n" +
michael@0	42	" if (++i === 2) break;\n");
michael@0	43
michael@0	44	test("do {\n" +
michael@0	45	" if (++i === 2) break;\n" +
michael@0	46	"} while (true);\n");
michael@0	47
michael@0	48	test("switch (i) {\n" +
michael@0	49	" case 2: return 7;\n" +
michael@0	50	" case 1: return 8;\n" +
michael@0	51	" case 0: break;\n" +
michael@0	52	" default: return -i;\n" +
michael@0	53	"}\n");