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
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
// 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.
#include "src/v8.h"
#include "test/cctest/cctest.h"
namespace {
int* global_use_counts = NULL;
void MockUseCounterCallback(v8::Isolate* isolate,
v8::Isolate::UseCounterFeature feature) {
++global_use_counts[feature];
}
}
TEST(DefineGetterSetterThrowUseCount) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
LocalContext env;
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
global_use_counts = use_counts;
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
// __defineGetter__ and __defineSetter__ do not increment
// kDefineGetterOrSetterWouldThrow on success
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: true });"
"a.__defineGetter__('b', ()=>{});");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: true });"
"a.__defineSetter__('b', ()=>{});");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
// __defineGetter__ and __defineSetter__ do not increment
// kDefineGetterOrSetterWouldThrow on other errors
v8::Local<v8::Value> resultProxyThrow = CompileRun(
"var exception;"
"try {"
"var a = new Proxy({}, { defineProperty: ()=>{throw new Error;} });"
"a.__defineGetter__('b', ()=>{});"
"} catch (e) { exception = e; }"
"exception");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CHECK(resultProxyThrow->IsObject());
resultProxyThrow = CompileRun(
"var exception;"
"try {"
"var a = new Proxy({}, { defineProperty: ()=>{throw new Error;} });"
"a.__defineSetter__('b', ()=>{});"
"} catch (e) { exception = e; }"
"exception");
CHECK_EQ(0, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CHECK(resultProxyThrow->IsObject());
// __defineGetter__ and __defineSetter__ increment
// kDefineGetterOrSetterWouldThrow when they would throw per spec (B.2.2.2)
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: false });"
"a.__defineGetter__('b', ()=>{});");
CHECK_EQ(1, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
CompileRun(
"var a = {};"
"Object.defineProperty(a, 'b', { value: 0, configurable: false });"
"a.__defineSetter__('b', ()=>{});");
CHECK_EQ(2, use_counts[v8::Isolate::kDefineGetterOrSetterWouldThrow]);
}
TEST(AssigmentExpressionLHSIsCall) {
v8::Isolate* isolate = CcTest::isolate();
v8::HandleScope scope(isolate);
LocalContext env;
int use_counts[v8::Isolate::kUseCounterFeatureCount] = {};
global_use_counts = use_counts;
CcTest::isolate()->SetUseCounterCallback(MockUseCounterCallback);
// AssignmentExpressions whose LHS is not a call do not increment counters
CompileRun("function f(){ a = 0; a()[b] = 0; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
CompileRun("function f(){ ++a; ++a()[b]; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
CompileRun("function f(){ 'use strict'; a = 0; a()[b] = 0; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
CompileRun("function f(){ 'use strict'; ++a; ++a()[b]; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
// AssignmentExpressions whose LHS is a call increment appropriate counters
CompileRun("function f(){ a() = 0; }");
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
CompileRun("function f(){ 'use strict'; a() = 0; }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
// UpdateExpressions whose LHS is a call increment appropriate counters
CompileRun("function f(){ ++a(); }");
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy] = 0;
CompileRun("function f(){ 'use strict'; ++a(); }");
CHECK_EQ(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInSloppy]);
CHECK_NE(0, use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict]);
use_counts[v8::Isolate::kAssigmentExpressionLHSIsCallInStrict] = 0;
}
|
