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Issue 919703003: WIP: Implement ES6 Spread-calls (Closed) Base URL: https://chromium.googlesource.com/v8/v8.git@master
Patch Set: Flag calls as spread calls in parser, error on spread intrinsics/construct calls Created 5 years, 10 months ago
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1 // Copyright 2014 the V8 project authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 (function testSpreadCallsStrict() {
6 "use strict"
7 function countArgs() { return arguments.length; }
8
9 // Test argument counting with different iterables
10 assertEquals(0, countArgs(...""));
11 assertEquals(1, countArgs(..."t"));
12 assertEquals(2, countArgs(..."te"));
13 assertEquals(3, countArgs(..."tes"));
14 assertEquals(4, countArgs(..."test"));
15 assertEquals(4, countArgs(..."tes", ..."t"));
16 assertEquals(4, countArgs("t", ..."es", "t"));
17 assertEquals(5, countArgs(..."test!"));
18 assertEquals(5, countArgs(..."tes", ..."t!"));
19 assertEquals(6, countArgs(..."test!!"));
20 assertEquals(6, countArgs(..."tes", ..."t!!"));
21
22 assertEquals(1, countArgs(...[1]));
23 assertEquals(2, countArgs(...[1, 2]));
24 assertEquals(3, countArgs(...[1, 2, 3]));
25 assertEquals(4, countArgs(...[1, 2, 3, 4]));
26 assertEquals(5, countArgs(...[1, 2, 3, 4, 5]));
27 assertEquals(6, countArgs(...[1, 2, 3, 4, 5, 6]));
28
29 assertEquals(1, countArgs(...new Set([1])));
30 assertEquals(2, countArgs(...new Set([1, 2])));
31 assertEquals(3, countArgs(...new Set([1, 2, 3])));
32 assertEquals(4, countArgs(...new Set([1, 2, 3, 4])));
33 assertEquals(5, countArgs(...new Set([1, 2, 3, 4, 5])));
34 assertEquals(6, countArgs(...new Set([1, 2, 3, 4, 5, 6])));
35
36 assertEquals(3, countArgs(...(function*(){ yield 1; yield 2; yield 3; })()));
37
38 // Test values
39 function sum() {
40 var sum = arguments[0];
41 for (var i = 1; i < arguments.length; ++i) {
42 sum += arguments[i];
43 }
44 return sum;
45 }
46
47 assertEquals(void 0, sum(...""));
48 assertEquals(void 0, sum(...[]));
49 assertEquals(void 0, sum(...new Set));
50 assertEquals(void 0, sum(...(function*() { })()));
51
52 assertEquals("test", sum(..."test"));
53 assertEquals(10, sum(...[1, 2, 3, 4]));
54 assertEquals(10, sum(...[1, 2, 3], 4));
55 assertEquals(10, sum(1, ...[2, 3], 4));
56 assertEquals(10, sum(1, ...[2, 3], ...[4]));
57 assertEquals(10, sum(1, 2, ...[3, 4]));
58 assertEquals(10, sum(...new Set([1, 2, 3, 4])));
59 assertEquals(10, sum(...(function*() {
60 yield 1;
61 yield 2;
62 yield 3;
63 yield 4;
64 })()));
65
66 // nested spreads
67 function makeArray() {
68 var result = [];
69 for (var i = 0; i < arguments.length; ++i) {
70 result.push(arguments[i]);
71 }
72 return result;
73 }
74 assertEquals(10, sum(...makeArray(...[1, 2, 3, 4])));
75 assertEquals("test!!!", sum(...makeArray(..."test!!!")));
76 })();
77
78
79 (function testSpreadCallsSloppy() {
80 function countArgs() { return arguments.length; }
81
82 // Test argument counting with different iterables
83 assertEquals(0, countArgs(...""));
84 assertEquals(1, countArgs(..."t"));
85 assertEquals(2, countArgs(..."te"));
86 assertEquals(3, countArgs(..."tes"));
87 assertEquals(4, countArgs(..."test"));
88 assertEquals(4, countArgs(..."tes", ..."t"));
89 assertEquals(4, countArgs("t", ..."es", "t"));
90 assertEquals(5, countArgs(..."test!"));
91 assertEquals(5, countArgs(..."tes", ..."t!"));
92 assertEquals(6, countArgs(..."test!!"));
93 assertEquals(6, countArgs(..."tes", ..."t!!"));
94
95 assertEquals(1, countArgs(...[1]));
96 assertEquals(2, countArgs(...[1, 2]));
97 assertEquals(3, countArgs(...[1, 2, 3]));
98 assertEquals(4, countArgs(...[1, 2, 3, 4]));
99 assertEquals(5, countArgs(...[1, 2, 3, 4, 5]));
100 assertEquals(6, countArgs(...[1, 2, 3, 4, 5, 6]));
101
102 assertEquals(1, countArgs(...new Set([1])));
103 assertEquals(2, countArgs(...new Set([1, 2])));
104 assertEquals(3, countArgs(...new Set([1, 2, 3])));
105 assertEquals(4, countArgs(...new Set([1, 2, 3, 4])));
106 assertEquals(5, countArgs(...new Set([1, 2, 3, 4, 5])));
107 assertEquals(6, countArgs(...new Set([1, 2, 3, 4, 5, 6])));
108
109 assertEquals(3, countArgs(...(function*(){ yield 1; yield 2; yield 3; })()));
110
111 // Test values
112 function sum() {
113 var sum = arguments[0];
114 for (var i = 1; i < arguments.length; ++i) {
115 sum += arguments[i];
116 }
117 return sum;
118 }
119
120 assertEquals(void 0, sum(...""));
121 assertEquals(void 0, sum(...[]));
122 assertEquals(void 0, sum(...new Set));
123 assertEquals(void 0, sum(...(function*() { })()));
124
125 assertEquals("test", sum(..."test"));
126 assertEquals(10, sum(...[1, 2, 3, 4]));
127 assertEquals(10, sum(...[1, 2, 3], 4));
128 assertEquals(10, sum(1, ...[2, 3], 4));
129 assertEquals(10, sum(1, ...[2, 3], ...[4]));
130 assertEquals(10, sum(1, 2, ...[3, 4]));
131 assertEquals(10, sum(...new Set([1, 2, 3, 4])));
132 assertEquals(10, sum(...(function*() {
133 yield 1;
134 yield 2;
135 yield 3;
136 yield 4;
137 })()));
138
139 // nested spreads
140 function makeArray() {
141 var result = [];
142 for (var i = 0; i < arguments.length; ++i) {
143 result.push(arguments[i]);
144 }
145 return result;
146 }
147 assertEquals(10, sum(...makeArray(...[1, 2, 3, 4])));
148 assertEquals("test!!!", sum(...makeArray(..."test!!!")));
149 })();
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