sbarati@apple.com | c0722da | 2015-11-20 02:37:47 +0000 | [diff] [blame] | 1 | function assert(b) { |
| 2 | if (!b) |
| 3 | throw new Error("Bad assertion") |
| 4 | } |
| 5 | noInline(assert); |
| 6 | |
| 7 | function foo(a, ...b) { |
| 8 | return b; |
| 9 | } |
| 10 | noInline(foo); |
| 11 | |
| 12 | function bar(a, ...b) { |
| 13 | return a + b[0]; |
| 14 | } |
| 15 | noInline(bar); |
| 16 | |
| 17 | function baz(a, ...b) { |
| 18 | function capture() { return b; } |
| 19 | assert(b[0] === capture()[0]); |
| 20 | return a + b[0]; |
| 21 | } |
| 22 | noInline(baz); |
| 23 | |
| 24 | function jaz(a, ...b) { |
| 25 | function capture() { return a + b[0]; } |
| 26 | assert(capture() === a + b[0]); |
| 27 | return a + b[0]; |
| 28 | } |
| 29 | noInline(jaz); |
| 30 | |
| 31 | function kaz(a = 10, ...b) { |
| 32 | return a + b[0] |
| 33 | } |
| 34 | noInline(kaz); |
| 35 | |
| 36 | function raz(a = 10, ...b) { |
| 37 | function capture() { return a + b[0]; } |
| 38 | assert(capture() === a + b[0]); |
| 39 | return a + b[0]; |
| 40 | } |
| 41 | noInline(raz); |
| 42 | |
| 43 | function restLength(a, ...b) { |
| 44 | return b.length; |
| 45 | } |
| 46 | noInline(restLength); |
| 47 | |
| 48 | function testArgumentsObject(...args) { |
| 49 | assert(args.length === arguments.length); |
| 50 | for (let i = 0; i < args.length; i++) |
| 51 | assert(args[i] === arguments[i]); |
| 52 | } |
| 53 | noInline(testArgumentsObject); |
| 54 | |
| 55 | function strictModeLikeArgumentsObject(a, ...args) { |
| 56 | assert(arguments[0] === a); |
| 57 | a = "a"; |
| 58 | assert(arguments[0] !== a); |
| 59 | assert(arguments[0] === 20); |
| 60 | assert(arguments.length === 2); |
| 61 | assert(args.length === 1); |
| 62 | assert(arguments[1] === args[0]); |
| 63 | arguments[1] = "b"; |
| 64 | assert(args[0] !== "b"); |
| 65 | } |
| 66 | noInline(strictModeLikeArgumentsObject); |
| 67 | |
| 68 | for (let i = 0; i < 10000; i++) { |
| 69 | let a1 = foo(10, 20); |
| 70 | assert(a1 instanceof Array); |
| 71 | assert(a1.length === 1); |
| 72 | assert(a1[0] === 20); |
| 73 | |
| 74 | let a2 = foo(10); |
| 75 | assert(a2 instanceof Array); |
| 76 | assert(a2.length === 0); |
| 77 | |
| 78 | let a3 = bar(10, 20); |
| 79 | assert(a3 === 30); |
| 80 | |
| 81 | let a4 = baz(10, 20); |
| 82 | assert(a4 === 30); |
| 83 | |
| 84 | let a5 = jaz("hello", "world"); |
| 85 | assert(a5 === "helloworld"); |
| 86 | |
| 87 | let a6 = kaz(undefined, 40); |
| 88 | assert(a6 === 50); |
| 89 | |
| 90 | let a7 = kaz(undefined, 40); |
| 91 | assert(a7 === 50); |
| 92 | |
| 93 | assert(restLength() === 0); |
| 94 | assert(restLength(1) === 0); |
| 95 | assert(restLength(1, 1) === 1); |
| 96 | assert(restLength(1, 1, 1) === 2); |
| 97 | assert(restLength(1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1) === 20); |
| 98 | |
| 99 | let obj = {foo: 40}; |
| 100 | testArgumentsObject("hello", obj, 100, 12.34, "world", obj, [1, 2, 3]); |
| 101 | |
| 102 | strictModeLikeArgumentsObject(20, 30); |
| 103 | } |