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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#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"
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