js/src/jit-test/tests/debug/breakpoint-11.js@6474c204b198 (annotated)
js/src/jit-test/tests/debug/breakpoint-11.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 | // Setting a breakpoint in a generator function works, and we can |
| michael@0 | 2 | // traverse the stack and evaluate expressions in the context of older |
| michael@0 | 3 | // generator frames. |
| michael@0 | 4 | |
| michael@0 | 5 | var g = newGlobal(); |
| michael@0 | 6 | var dbg = Debugger(g); |
| michael@0 | 7 | dbg.onDebuggerStatement = function (frame) { |
| michael@0 | 8 | function hit(frame) { |
| michael@0 | 9 | assertEq(frame.generator, true); |
| michael@0 | 10 | assertEq(frame.older.generator, true); |
| michael@0 | 11 | frame.older.eval("q += 16"); |
| michael@0 | 12 | } |
| michael@0 | 13 | |
| michael@0 | 14 | var s = frame.script; |
| michael@0 | 15 | var offs = s.getLineOffsets(g.line0 + 9); |
| michael@0 | 16 | for (var i = 0; i < offs.length; i++) |
| michael@0 | 17 | s.setBreakpoint(offs[i], {hit: hit}); |
| michael@0 | 18 | }; |
| michael@0 | 19 | |
| michael@0 | 20 | g.eval("line0 = Error().lineNumber;\n" + |
| michael@0 | 21 | "function* g(x) {\n" + // + 1 |
| michael@0 | 22 | " var q = 10;\n" + // + 2 |
| michael@0 | 23 | " yield* x;\n" + // + 3 |
| michael@0 | 24 | " return q;\n" + // + 4 |
| michael@0 | 25 | "}\n" + // + 5 |
| michael@0 | 26 | "function* range(n) {\n" + // + 6 |
| michael@0 | 27 | " debugger;\n" + // + 7 |
| michael@0 | 28 | " for (var i = 0; i < n; i++)\n" + // + 8 |
| michael@0 | 29 | " yield i;\n" + // + 9 <-- breakpoint |
| michael@0 | 30 | " return;\n" + // so that line 9 only has the yield |
| michael@0 | 31 | "}"); |
| michael@0 | 32 | |
| michael@0 | 33 | g.eval("var iter = g(range(2))"); |
| michael@0 | 34 | g.eval("var first = iter.next().value"); |
| michael@0 | 35 | g.eval("var second = iter.next().value"); |
| michael@0 | 36 | g.eval("var third = iter.next().value"); |
| michael@0 | 37 | |
| michael@0 | 38 | assertEq(g.first, 0); |
| michael@0 | 39 | assertEq(g.second, 1); |
| michael@0 | 40 | assertEq(g.third, 42); |
