1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
|
// Copyright 2016 the V8 project authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
// Flags: --allow-natives-syntax --harmony-tailcalls --harmony-proxies
"use strict";
Error.prepareStackTrace = (e,s) => s;
function CheckStackTrace(expected) {
var stack = (new Error()).stack;
assertEquals("CheckStackTrace", stack[0].getFunctionName());
for (var i = 0; i < expected.length; i++) {
assertEquals(expected[i].name, stack[i + 1].getFunctionName());
}
}
// Tail call proxy function when caller does not have an arguments
// adaptor frame.
(function test() {
// Caller and callee have same number of arguments.
function f1(a) {
CheckStackTrace([f1, test]);
return 10 + a;
}
var p1 = new Proxy(f1, {});
function g1(a) { return p1(2); }
assertEquals(12, g1(1));
// Caller has more arguments than callee.
function f2(a) {
CheckStackTrace([f2, test]);
return 10 + a;
}
var p2 = new Proxy(f2, {});
function g2(a, b, c) { return p2(2); }
assertEquals(12, g2(1, 2, 3));
// Caller has less arguments than callee.
function f3(a, b, c) {
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
var p3 = new Proxy(f3, {});
function g3(a) { return p3(2, 3, 4); }
assertEquals(19, g3(1));
// Callee has arguments adaptor frame.
function f4(a, b, c) {
CheckStackTrace([f4, test]);
return 10 + a;
}
var p4 = new Proxy(f4, {});
function g4(a) { return p4(2); }
assertEquals(12, g4(1));
})();
// Tail call proxy function when caller has an arguments adaptor frame.
(function test() {
// Caller and callee have same number of arguments.
function f1(a) {
CheckStackTrace([f1, test]);
return 10 + a;
}
var p1 = new Proxy(f1, {});
function g1(a) { return p1(2); }
assertEquals(12, g1());
// Caller has more arguments than callee.
function f2(a) {
CheckStackTrace([f2, test]);
return 10 + a;
}
var p2 = new Proxy(f2, {});
function g2(a, b, c) { return p2(2); }
assertEquals(12, g2());
// Caller has less arguments than callee.
function f3(a, b, c) {
CheckStackTrace([f3, test]);
return 10 + a + b + c;
}
var p3 = new Proxy(f3, {});
function g3(a) { return p3(2, 3, 4); }
assertEquals(19, g3());
// Callee has arguments adaptor frame.
function f4(a, b, c) {
CheckStackTrace([f4, test]);
return 10 + a;
}
var p4 = new Proxy(f4, {});
function g4(a) { return p4(2); }
assertEquals(12, g4());
})();
|
