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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
|
// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <qtest.h>
#include <private/qv4instr_moth_p.h>
#include <private/qv4script_p.h>
class tst_v4misc: public QObject
{
Q_OBJECT
private slots:
void tdzOptimizations_data();
void tdzOptimizations();
void parserMisc_data();
void parserMisc();
void subClassing_data();
void subClassing();
void nestingDepth();
};
void tst_v4misc::tdzOptimizations_data()
{
QTest::addColumn<QString>("scriptToCompile");
QTest::newRow("access-after-let") << QString("let x; x = 10;");
QTest::newRow("access-after-const") << QString("const x = 10; print(x);");
QTest::newRow("access-after-let") << QString("for (let x of y) print(x);");
}
void tst_v4misc::tdzOptimizations()
{
QFETCH(QString, scriptToCompile);
QV4::ExecutionEngine v4;
QV4::Script script(&v4, nullptr, /*parse as binding*/false, scriptToCompile);
script.parse();
QVERIFY(!v4.hasException);
const auto function = script.compilationUnit->unitData()->functionAt(0);
const auto *code = function->code();
const auto len = function->codeSize;
const char *end = code + len;
const auto decodeInstruction = [&code]() {
QV4::Moth::Instr::Type type = QV4::Moth::Instr::Type(static_cast<uchar>(*code));
dispatch:
switch (type) {
case QV4::Moth::Instr::Type::Nop:
++code;
type = QV4::Moth::Instr::Type(static_cast<uchar>(*code));
goto dispatch;
case QV4::Moth::Instr::Type::Nop_Wide: /* wide prefix */
++code;
type = QV4::Moth::Instr::Type(0x100 | static_cast<uchar>(*code));
goto dispatch;
#define CASE_AND_GOTO_INSTRUCTION(name, nargs, ...) \
case QV4::Moth::Instr::Type::name: \
MOTH_ADJUST_CODE(qint8, nargs); \
break;
#define CASE_AND_GOTO_WIDE_INSTRUCTION(name, nargs, ...) \
case QV4::Moth::Instr::Type::name##_Wide: \
MOTH_ADJUST_CODE(int, nargs); \
type = QV4::Moth::Instr::Type::name; \
break;
#define MOTH_DECODE_WITHOUT_ARGS(instr) \
INSTR_##instr(CASE_AND_GOTO) \
INSTR_##instr(CASE_AND_GOTO_WIDE)
FOR_EACH_MOTH_INSTR(MOTH_DECODE_WITHOUT_ARGS)
}
return type;
};
while (code < end) {
QV4::Moth::Instr::Type type = decodeInstruction();
QVERIFY(type != QV4::Moth::Instr::Type::DeadTemporalZoneCheck);
}
}
void tst_v4misc::parserMisc_data()
{
QTest::addColumn<QString>("error");
QTest::newRow("8[++i][+++i]") << QString("ReferenceError: Prefix ++ operator applied to value that is not a reference.");
QTest::newRow("`a${1++}`") << QString("ReferenceError: Invalid left-hand side expression in postfix operation");
QTest::newRow("for (var f in ++!binaryMathg) ;") << QString("ReferenceError: Prefix ++ operator applied to value that is not a reference.");
QTest::newRow("for (va() in obj) {}") << QString("ReferenceError: Invalid left-hand side expression for 'in' expression");
QTest::newRow("[1]=7[A=8=9]") << QString("ReferenceError: left-hand side of assignment operator is not an lvalue");
QTest::newRow("var asmvalsLen = asmvals{{{{{ngth}}}}};") << QString("SyntaxError: Expected token `;'");
QTest::newRow("T||9[---L6i]") << QString("ReferenceError: Prefix ++ operator applied to value that is not a reference.");
QTest::newRow("a?b:[---Hi]") << QString("ReferenceError: Prefix ++ operator applied to value that is not a reference.");
QTest::newRow("[``]=1") << QString("ReferenceError: Binding target is not a reference.");
}
void tst_v4misc::parserMisc()
{
QFETCH(QString, error);
QJSEngine engine;
QJSValue result = engine.evaluate(QString::fromUtf8(QTest::currentDataTag()));
QVERIFY(result.isError());
QCOMPARE(result.toString(), error);
}
void tst_v4misc::subClassing_data()
{
QTest::addColumn<QString>("script");
QString code(
"class Foo extends %1 {"
" constructor() { super(); this.reset(); }"
" reset() { }"
"}"
"new Foo();");
QTest::newRow("Array") << code.arg("Array");
QTest::newRow("Boolean") << code.arg("Boolean");
QTest::newRow("Date") << code.arg("Date");
QTest::newRow("Function") << code.arg("Function");
QTest::newRow("Number") << code.arg("Number");
QTest::newRow("Map") << code.arg("Map");
QTest::newRow("Promise") << QString(
"class Foo extends Promise {"
" constructor() { super(Function()); this.reset(); }"
" reset() { }"
"}"
"new Foo();");
QTest::newRow("RegExp") << code.arg("RegExp");
QTest::newRow("Set") << code.arg("Set");
QTest::newRow("String") << code.arg("String");
QTest::newRow("WeakMap") << code.arg("WeakMap");
QTest::newRow("WeakSet") << code.arg("WeakSet");
}
void tst_v4misc::subClassing()
{
QFETCH(QString, script);
QJSEngine engine;
QJSValue result = engine.evaluate(script);
QVERIFY(!result.isError());
}
void tst_v4misc::nestingDepth()
{
{ // left recursive
QString s(40000, '`');
QJSEngine engine;
QJSValue result = engine.evaluate(s);
QVERIFY(result.isError());
QCOMPARE(result.toString(), "SyntaxError: Maximum statement or expression depth exceeded");
}
{ // right recursive
QString s(200000, '-');
s += "\nd";
QJSEngine engine;
QJSValue result = engine.evaluate(s);
QVERIFY(result.isError());
QCOMPARE(result.toString(), "SyntaxError: Maximum statement or expression depth exceeded");
}
}
QTEST_MAIN(tst_v4misc);
#include "tst_v4misc.moc"
|
