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js/src/jit-test/tests/debug/Script-getLineOffsets-06.js@6474c204b198 (annotated)

js/src/jit-test/tests/debug/Script-getLineOffsets-06.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 extended instructions, such as JSOP_GOTOX.
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.script;
michael@0	9	var offs;
michael@0	10	var lineno = g.line0 + where;
michael@0	11	offs = s.getLineOffsets(lineno);
michael@0	12	for (var i = 0; i < offs.length; i++) {
michael@0	13	assertEq(s.getOffsetLine(offs[i]), lineno);
michael@0	14	s.setBreakpoint(offs[i], {hit: function (frame) { g.log += 'B'; }});
michael@0	15	}
michael@0	16	g.log += 'A';
michael@0	17	};
michael@0	18
michael@0	19	function test(s) {
michael@0	20	assertEq(s.charAt(s.length - 1) !== '\n', true);
michael@0	21	var count = s.split(/\n/).length; // number of lines in s
michael@0	22	g.i = 0;
michael@0	23	g.log = '';
michael@0	24	where = 1 + count;
michael@0	25	g.eval("line0 = Error().lineNumber;\n" +
michael@0	26	"debugger;\n" + // line0 + 1
michael@0	27	s + // line0 + 2 ... line0 + where
michael@0	28	" log += 'C';\n");
michael@0	29	assertEq(g.log, 'ABC');
michael@0	30	}
michael@0	31
michael@0	32	function repeat(s) {
michael@0	33	return Array((1 << 14) + 1).join(s); // 16K copies of s
michael@0	34	}
michael@0	35	var long_expr = "i" + repeat(" + i");
michael@0	36	var long_throw_stmt = "throw " + long_expr + ";\n";
michael@0	37
michael@0	38	// long break (JSOP_GOTOX)
michael@0	39	test("for (;;) {\n" +
michael@0	40	" if (i === 0)\n" +
michael@0	41	" break;\n" +
michael@0	42	" " + long_throw_stmt +
michael@0	43	"}");
michael@0	44
michael@0	45	// long continue (JSOP_GOTOX)
michael@0	46	test("do {\n" +
michael@0	47	" if (i === 0)\n" +
michael@0	48	" continue;\n" +
michael@0	49	" " + long_throw_stmt +
michael@0	50	"} while (i !== 0);");
michael@0	51
michael@0	52	// long if consequent (JSOP_IFEQX)
michael@0	53	test("if (i === 2) {\n" +
michael@0	54	" " + long_throw_stmt +
michael@0	55	"}");
michael@0	56
michael@0	57	// long catch-block with finally (JSOP_GOSUBX)
michael@0	58	test("try {\n" +
michael@0	59	" i = 0;\n" +
michael@0	60	"} catch (exc) {\n" +
michael@0	61	" throw " + long_expr + ";\n" +
michael@0	62	"} finally {\n" +
michael@0	63	" i = 1;\n" +
michael@0	64	"}");
michael@0	65
michael@0	66	// long case (JSOP_TABLESWITCHX)
michael@0	67	test("switch (i) {\n" +
michael@0	68	" default:\n" +
michael@0	69	" case 1: " + long_throw_stmt +
michael@0	70	" case 0: i++; }");
michael@0	71
michael@0	72	test("switch (i) {\n" +
michael@0	73	" case 1: case 2: case 3: " + long_throw_stmt +
michael@0	74	" default: i++; }");
michael@0	75
michael@0	76	// long case (JSOP_LOOKUPSWITCHX)
michael@0	77	test("switch ('' + i) {\n" +
michael@0	78	" default:\n" +
michael@0	79	" case '1': " + long_throw_stmt +
michael@0	80	" case '0': i++; }");
michael@0	81
michael@0	82	test("switch (i) {\n" +
michael@0	83	" case '1': case '2': case '3': " + long_throw_stmt +
michael@0	84	" default: i++; }");
michael@0	85
michael@0	86	// long case or case-expression (JSOP_CASEX)
michael@0	87	test("switch (i) {\n" +
michael@0	88	" case i + 1 - i:\n" +
michael@0	89	" default:\n" +
michael@0	90	" " + long_throw_stmt +
michael@0	91	" case i + i:\n" +
michael@0	92	" i++; break; }");
michael@0	93
michael@0	94	// long case when JSOP_CASE is used (JSOP_DEFAULTX)
michael@0	95	test("switch (i) {\n" +
michael@0	96	" case i + 1 - i:\n" +
michael@0	97	" " + long_throw_stmt +
michael@0	98	" default:\n" +
michael@0	99	" i++; break; }");