mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
505 lines
15 KiB
C++
505 lines
15 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/* This Source Code Form is subject to the terms of the Mozilla Public
|
|
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
|
|
* You can obtain one at http://mozilla.org/MPL/2.0/. */
|
|
|
|
#include "mozilla/CheckedInt.h"
|
|
|
|
#include <iostream>
|
|
#include <climits>
|
|
|
|
#ifndef MOZ_CHECKEDINT_USE_MFBT
|
|
# error "MOZ_CHECKEDINT_USE_MFBT should be defined by CheckedInt.h"
|
|
#endif
|
|
|
|
using namespace mozilla;
|
|
|
|
int gIntegerTypesTested = 0;
|
|
int gTestsPassed = 0;
|
|
int gTestsFailed = 0;
|
|
|
|
void verifyImplFunction(bool x, bool expected,
|
|
const char* file, int line,
|
|
int size, bool isTSigned)
|
|
{
|
|
if (x == expected) {
|
|
gTestsPassed++;
|
|
} else {
|
|
gTestsFailed++;
|
|
std::cerr << "Test failed at " << file << ":" << line;
|
|
std::cerr << " with T a ";
|
|
if (isTSigned)
|
|
std::cerr << "signed";
|
|
else
|
|
std::cerr << "unsigned";
|
|
std::cerr << " " << CHAR_BIT*size << "-bit integer type" << std::endl;
|
|
}
|
|
}
|
|
|
|
#define VERIFY_IMPL(x, expected) \
|
|
verifyImplFunction((x), \
|
|
(expected), \
|
|
__FILE__, \
|
|
__LINE__, \
|
|
sizeof(T), \
|
|
detail::IsSigned<T>::value)
|
|
|
|
#define VERIFY(x) VERIFY_IMPL(x, true)
|
|
#define VERIFY_IS_FALSE(x) VERIFY_IMPL(x, false)
|
|
#define VERIFY_IS_VALID(x) VERIFY_IMPL((x).isValid(), true)
|
|
#define VERIFY_IS_INVALID(x) VERIFY_IMPL((x).isValid(), false)
|
|
#define VERIFY_IS_VALID_IF(x,condition) VERIFY_IMPL((x).isValid(), (condition))
|
|
|
|
template<typename T, size_t Size = sizeof(T)>
|
|
struct testTwiceBiggerType
|
|
{
|
|
static void run()
|
|
{
|
|
VERIFY(detail::IsSupported<typename detail::TwiceBiggerType<T>::Type>::value);
|
|
VERIFY(sizeof(typename detail::TwiceBiggerType<T>::Type)
|
|
== 2 * sizeof(T));
|
|
VERIFY(bool(detail::IsSigned<typename detail::TwiceBiggerType<T>::Type>::value)
|
|
== bool(detail::IsSigned<T>::value));
|
|
}
|
|
};
|
|
|
|
template<typename T>
|
|
struct testTwiceBiggerType<T, 8>
|
|
{
|
|
static void run()
|
|
{
|
|
VERIFY_IS_FALSE(detail::IsSupported<
|
|
typename detail::TwiceBiggerType<T>::Type
|
|
>::value);
|
|
}
|
|
};
|
|
|
|
|
|
template<typename T>
|
|
void test()
|
|
{
|
|
static bool alreadyRun = false;
|
|
// Integer types from different families may just be typedefs for types from other families.
|
|
// e.g. int32_t might be just a typedef for int. No point re-running the same tests then.
|
|
if (alreadyRun)
|
|
return;
|
|
alreadyRun = true;
|
|
|
|
VERIFY(detail::IsSupported<T>::value);
|
|
const bool isTSigned = detail::IsSigned<T>::value;
|
|
VERIFY(bool(isTSigned) == !bool(T(-1) > T(0)));
|
|
|
|
testTwiceBiggerType<T>::run();
|
|
|
|
typedef typename detail::UnsignedType<T>::Type unsignedT;
|
|
|
|
VERIFY(sizeof(unsignedT) == sizeof(T));
|
|
VERIFY(detail::IsSigned<unsignedT>::value == false);
|
|
|
|
const CheckedInt<T> max(detail::MaxValue<T>::value);
|
|
const CheckedInt<T> min(detail::MinValue<T>::value);
|
|
|
|
// Check MinValue and MaxValue, since they are custom implementations and a mistake there
|
|
// could potentially NOT be caught by any other tests... while making everything wrong!
|
|
|
|
unsignedT bit = 1;
|
|
unsignedT unsignedMinValue(min.value());
|
|
unsignedT unsignedMaxValue(max.value());
|
|
for (size_t i = 0; i < sizeof(T) * CHAR_BIT - 1; i++)
|
|
{
|
|
VERIFY((unsignedMinValue & bit) == 0);
|
|
bit <<= 1;
|
|
}
|
|
VERIFY((unsignedMinValue & bit) == (isTSigned ? bit : unsignedT(0)));
|
|
VERIFY(unsignedMaxValue == unsignedT(~unsignedMinValue));
|
|
|
|
const CheckedInt<T> zero(0);
|
|
const CheckedInt<T> one(1);
|
|
const CheckedInt<T> two(2);
|
|
const CheckedInt<T> three(3);
|
|
const CheckedInt<T> four(4);
|
|
|
|
/* Addition / subtraction checks */
|
|
|
|
VERIFY_IS_VALID(zero + zero);
|
|
VERIFY(zero + zero == zero);
|
|
VERIFY_IS_FALSE(zero + zero == one); // Check that == doesn't always return true
|
|
VERIFY_IS_VALID(zero + one);
|
|
VERIFY(zero + one == one);
|
|
VERIFY_IS_VALID(one + one);
|
|
VERIFY(one + one == two);
|
|
|
|
const CheckedInt<T> maxMinusOne = max - one;
|
|
const CheckedInt<T> maxMinusTwo = max - two;
|
|
VERIFY_IS_VALID(maxMinusOne);
|
|
VERIFY_IS_VALID(maxMinusTwo);
|
|
VERIFY_IS_VALID(maxMinusOne + one);
|
|
VERIFY_IS_VALID(maxMinusTwo + one);
|
|
VERIFY_IS_VALID(maxMinusTwo + two);
|
|
VERIFY(maxMinusOne + one == max);
|
|
VERIFY(maxMinusTwo + one == maxMinusOne);
|
|
VERIFY(maxMinusTwo + two == max);
|
|
|
|
VERIFY_IS_VALID(max + zero);
|
|
VERIFY_IS_VALID(max - zero);
|
|
VERIFY_IS_INVALID(max + one);
|
|
VERIFY_IS_INVALID(max + two);
|
|
VERIFY_IS_INVALID(max + maxMinusOne);
|
|
VERIFY_IS_INVALID(max + max);
|
|
|
|
const CheckedInt<T> minPlusOne = min + one;
|
|
const CheckedInt<T> minPlusTwo = min + two;
|
|
VERIFY_IS_VALID(minPlusOne);
|
|
VERIFY_IS_VALID(minPlusTwo);
|
|
VERIFY_IS_VALID(minPlusOne - one);
|
|
VERIFY_IS_VALID(minPlusTwo - one);
|
|
VERIFY_IS_VALID(minPlusTwo - two);
|
|
VERIFY(minPlusOne - one == min);
|
|
VERIFY(minPlusTwo - one == minPlusOne);
|
|
VERIFY(minPlusTwo - two == min);
|
|
|
|
const CheckedInt<T> minMinusOne = min - one;
|
|
VERIFY_IS_VALID(min + zero);
|
|
VERIFY_IS_VALID(min - zero);
|
|
VERIFY_IS_INVALID(min - one);
|
|
VERIFY_IS_INVALID(min - two);
|
|
VERIFY_IS_INVALID(min - minMinusOne);
|
|
VERIFY_IS_VALID(min - min);
|
|
|
|
const CheckedInt<T> maxOverTwo = max / two;
|
|
VERIFY_IS_VALID(maxOverTwo + maxOverTwo);
|
|
VERIFY_IS_VALID(maxOverTwo + one);
|
|
VERIFY((maxOverTwo + one) - one == maxOverTwo);
|
|
VERIFY_IS_VALID(maxOverTwo - maxOverTwo);
|
|
VERIFY(maxOverTwo - maxOverTwo == zero);
|
|
|
|
const CheckedInt<T> minOverTwo = min / two;
|
|
VERIFY_IS_VALID(minOverTwo + minOverTwo);
|
|
VERIFY_IS_VALID(minOverTwo + one);
|
|
VERIFY((minOverTwo + one) - one == minOverTwo);
|
|
VERIFY_IS_VALID(minOverTwo - minOverTwo);
|
|
VERIFY(minOverTwo - minOverTwo == zero);
|
|
|
|
VERIFY_IS_INVALID(min - one);
|
|
VERIFY_IS_INVALID(min - two);
|
|
|
|
if (isTSigned) {
|
|
VERIFY_IS_INVALID(min + min);
|
|
VERIFY_IS_INVALID(minOverTwo + minOverTwo + minOverTwo);
|
|
VERIFY_IS_INVALID(zero - min + min);
|
|
VERIFY_IS_INVALID(one - min + min);
|
|
}
|
|
|
|
/* Unary operator- checks */
|
|
|
|
const CheckedInt<T> negOne = -one;
|
|
const CheckedInt<T> negTwo = -two;
|
|
|
|
if (isTSigned) {
|
|
VERIFY_IS_VALID(-max);
|
|
VERIFY_IS_INVALID(-min);
|
|
VERIFY(-max - min == one);
|
|
VERIFY_IS_VALID(-max - one);
|
|
VERIFY_IS_VALID(negOne);
|
|
VERIFY_IS_VALID(-max + negOne);
|
|
VERIFY_IS_VALID(negOne + one);
|
|
VERIFY(negOne + one == zero);
|
|
VERIFY_IS_VALID(negTwo);
|
|
VERIFY_IS_VALID(negOne + negOne);
|
|
VERIFY(negOne + negOne == negTwo);
|
|
} else {
|
|
VERIFY_IS_INVALID(-max);
|
|
VERIFY_IS_VALID(-min);
|
|
VERIFY(min == zero);
|
|
VERIFY_IS_INVALID(negOne);
|
|
}
|
|
|
|
/* multiplication checks */
|
|
|
|
VERIFY_IS_VALID(zero * zero);
|
|
VERIFY(zero * zero == zero);
|
|
VERIFY_IS_VALID(zero * one);
|
|
VERIFY(zero * one == zero);
|
|
VERIFY_IS_VALID(one * zero);
|
|
VERIFY(one * zero == zero);
|
|
VERIFY_IS_VALID(one * one);
|
|
VERIFY(one * one == one);
|
|
VERIFY_IS_VALID(one * three);
|
|
VERIFY(one * three == three);
|
|
VERIFY_IS_VALID(two * two);
|
|
VERIFY(two * two == four);
|
|
|
|
VERIFY_IS_INVALID(max * max);
|
|
VERIFY_IS_INVALID(maxOverTwo * max);
|
|
VERIFY_IS_INVALID(maxOverTwo * maxOverTwo);
|
|
|
|
const CheckedInt<T> maxApproxSqrt(T(T(1) << (CHAR_BIT*sizeof(T)/2)));
|
|
|
|
VERIFY_IS_VALID(maxApproxSqrt);
|
|
VERIFY_IS_VALID(maxApproxSqrt * two);
|
|
VERIFY_IS_INVALID(maxApproxSqrt * maxApproxSqrt);
|
|
VERIFY_IS_INVALID(maxApproxSqrt * maxApproxSqrt * maxApproxSqrt);
|
|
|
|
if (isTSigned) {
|
|
VERIFY_IS_INVALID(min * min);
|
|
VERIFY_IS_INVALID(minOverTwo * min);
|
|
VERIFY_IS_INVALID(minOverTwo * minOverTwo);
|
|
|
|
const CheckedInt<T> minApproxSqrt = -maxApproxSqrt;
|
|
|
|
VERIFY_IS_VALID(minApproxSqrt);
|
|
VERIFY_IS_VALID(minApproxSqrt * two);
|
|
VERIFY_IS_INVALID(minApproxSqrt * maxApproxSqrt);
|
|
VERIFY_IS_INVALID(minApproxSqrt * minApproxSqrt);
|
|
}
|
|
|
|
// make sure to check all 4 paths in signed multiplication validity check.
|
|
// test positive * positive
|
|
VERIFY_IS_VALID(max * one);
|
|
VERIFY(max * one == max);
|
|
VERIFY_IS_INVALID(max * two);
|
|
VERIFY_IS_VALID(maxOverTwo * two);
|
|
VERIFY((maxOverTwo + maxOverTwo) == (maxOverTwo * two));
|
|
|
|
if (isTSigned) {
|
|
// test positive * negative
|
|
VERIFY_IS_VALID(max * negOne);
|
|
VERIFY_IS_VALID(-max);
|
|
VERIFY(max * negOne == -max);
|
|
VERIFY_IS_VALID(one * min);
|
|
VERIFY_IS_INVALID(max * negTwo);
|
|
VERIFY_IS_VALID(maxOverTwo * negTwo);
|
|
VERIFY_IS_VALID(two * minOverTwo);
|
|
VERIFY_IS_VALID((maxOverTwo + one) * negTwo);
|
|
VERIFY_IS_INVALID((maxOverTwo + two) * negTwo);
|
|
VERIFY_IS_INVALID(two * (minOverTwo - one));
|
|
|
|
// test negative * positive
|
|
VERIFY_IS_VALID(min * one);
|
|
VERIFY_IS_VALID(minPlusOne * one);
|
|
VERIFY_IS_INVALID(min * two);
|
|
VERIFY_IS_VALID(minOverTwo * two);
|
|
VERIFY(minOverTwo * two == min);
|
|
VERIFY_IS_INVALID((minOverTwo - one) * negTwo);
|
|
VERIFY_IS_INVALID(negTwo * max);
|
|
VERIFY_IS_VALID(minOverTwo * two);
|
|
VERIFY(minOverTwo * two == min);
|
|
VERIFY_IS_VALID(negTwo * maxOverTwo);
|
|
VERIFY_IS_INVALID((minOverTwo - one) * two);
|
|
VERIFY_IS_VALID(negTwo * (maxOverTwo + one));
|
|
VERIFY_IS_INVALID(negTwo * (maxOverTwo + two));
|
|
|
|
// test negative * negative
|
|
VERIFY_IS_INVALID(min * negOne);
|
|
VERIFY_IS_VALID(minPlusOne * negOne);
|
|
VERIFY(minPlusOne * negOne == max);
|
|
VERIFY_IS_INVALID(min * negTwo);
|
|
VERIFY_IS_INVALID(minOverTwo * negTwo);
|
|
VERIFY_IS_INVALID(negOne * min);
|
|
VERIFY_IS_VALID(negOne * minPlusOne);
|
|
VERIFY(negOne * minPlusOne == max);
|
|
VERIFY_IS_INVALID(negTwo * min);
|
|
VERIFY_IS_INVALID(negTwo * minOverTwo);
|
|
}
|
|
|
|
/* Division checks */
|
|
|
|
VERIFY_IS_VALID(one / one);
|
|
VERIFY(one / one == one);
|
|
VERIFY_IS_VALID(three / three);
|
|
VERIFY(three / three == one);
|
|
VERIFY_IS_VALID(four / two);
|
|
VERIFY(four / two == two);
|
|
VERIFY((four*three)/four == three);
|
|
|
|
// Check that div by zero is invalid
|
|
VERIFY_IS_INVALID(zero / zero);
|
|
VERIFY_IS_INVALID(one / zero);
|
|
VERIFY_IS_INVALID(two / zero);
|
|
VERIFY_IS_INVALID(negOne / zero);
|
|
VERIFY_IS_INVALID(max / zero);
|
|
VERIFY_IS_INVALID(min / zero);
|
|
|
|
if (isTSigned) {
|
|
// Check that min / -1 is invalid
|
|
VERIFY_IS_INVALID(min / negOne);
|
|
|
|
// Check that the test for div by -1 isn't banning other numerators than min
|
|
VERIFY_IS_VALID(one / negOne);
|
|
VERIFY_IS_VALID(zero / negOne);
|
|
VERIFY_IS_VALID(negOne / negOne);
|
|
VERIFY_IS_VALID(max / negOne);
|
|
}
|
|
|
|
/* Check that invalidity is correctly preserved by arithmetic ops */
|
|
|
|
const CheckedInt<T> someInvalid = max + max;
|
|
VERIFY_IS_INVALID(someInvalid + zero);
|
|
VERIFY_IS_INVALID(someInvalid - zero);
|
|
VERIFY_IS_INVALID(zero + someInvalid);
|
|
VERIFY_IS_INVALID(zero - someInvalid);
|
|
VERIFY_IS_INVALID(-someInvalid);
|
|
VERIFY_IS_INVALID(someInvalid * zero);
|
|
VERIFY_IS_INVALID(someInvalid * one);
|
|
VERIFY_IS_INVALID(zero * someInvalid);
|
|
VERIFY_IS_INVALID(one * someInvalid);
|
|
VERIFY_IS_INVALID(someInvalid / zero);
|
|
VERIFY_IS_INVALID(someInvalid / one);
|
|
VERIFY_IS_INVALID(zero / someInvalid);
|
|
VERIFY_IS_INVALID(one / someInvalid);
|
|
VERIFY_IS_INVALID(someInvalid + someInvalid);
|
|
VERIFY_IS_INVALID(someInvalid - someInvalid);
|
|
VERIFY_IS_INVALID(someInvalid * someInvalid);
|
|
VERIFY_IS_INVALID(someInvalid / someInvalid);
|
|
|
|
/* Check that mixing checked integers with plain integers in expressions is allowed */
|
|
|
|
VERIFY(one + T(2) == three);
|
|
VERIFY(2 + one == three);
|
|
{
|
|
CheckedInt<T> x = one;
|
|
x += 2;
|
|
VERIFY(x == three);
|
|
}
|
|
VERIFY(two - 1 == one);
|
|
VERIFY(2 - one == one);
|
|
{
|
|
CheckedInt<T> x = two;
|
|
x -= 1;
|
|
VERIFY(x == one);
|
|
}
|
|
VERIFY(one * 2 == two);
|
|
VERIFY(2 * one == two);
|
|
{
|
|
CheckedInt<T> x = one;
|
|
x *= 2;
|
|
VERIFY(x == two);
|
|
}
|
|
VERIFY(four / 2 == two);
|
|
VERIFY(4 / two == two);
|
|
{
|
|
CheckedInt<T> x = four;
|
|
x /= 2;
|
|
VERIFY(x == two);
|
|
}
|
|
|
|
VERIFY(one == 1);
|
|
VERIFY(1 == one);
|
|
VERIFY_IS_FALSE(two == 1);
|
|
VERIFY_IS_FALSE(1 == two);
|
|
VERIFY_IS_FALSE(someInvalid == 1);
|
|
VERIFY_IS_FALSE(1 == someInvalid);
|
|
|
|
/* Check that construction of CheckedInt from an integer value of a mismatched type is checked */
|
|
|
|
#define VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(U) \
|
|
{ \
|
|
bool isUSigned = detail::IsSigned<U>::value; \
|
|
VERIFY_IS_VALID(CheckedInt<T>(U(0))); \
|
|
VERIFY_IS_VALID(CheckedInt<T>(U(1))); \
|
|
VERIFY_IS_VALID(CheckedInt<T>(U(100))); \
|
|
if (isUSigned) \
|
|
VERIFY_IS_VALID_IF(CheckedInt<T>(U(-1)), isTSigned); \
|
|
if (sizeof(U) > sizeof(T)) \
|
|
VERIFY_IS_INVALID(CheckedInt<T>(U(detail::MaxValue<T>::value) + one.value())); \
|
|
VERIFY_IS_VALID_IF(CheckedInt<T>(detail::MaxValue<U>::value), \
|
|
(sizeof(T) > sizeof(U) || ((sizeof(T) == sizeof(U)) && (isUSigned || !isTSigned)))); \
|
|
VERIFY_IS_VALID_IF(CheckedInt<T>(detail::MinValue<U>::value), \
|
|
isUSigned == false ? 1 : \
|
|
bool(isTSigned) == false ? 0 : \
|
|
sizeof(T) >= sizeof(U)); \
|
|
}
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(int8_t)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(uint8_t)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(int16_t)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(uint16_t)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(int32_t)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(uint32_t)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(int64_t)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(uint64_t)
|
|
|
|
typedef signed char signedChar;
|
|
typedef unsigned char unsignedChar;
|
|
typedef unsigned short unsignedShort;
|
|
typedef unsigned int unsignedInt;
|
|
typedef unsigned long unsignedLong;
|
|
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(char)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(signedChar)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(unsignedChar)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(short)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(unsignedShort)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(int)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(unsignedInt)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(long)
|
|
VERIFY_CONSTRUCTION_FROM_INTEGER_TYPE(unsignedLong)
|
|
|
|
/* Test increment/decrement operators */
|
|
|
|
CheckedInt<T> x, y;
|
|
x = one;
|
|
y = x++;
|
|
VERIFY(x == two);
|
|
VERIFY(y == one);
|
|
x = one;
|
|
y = ++x;
|
|
VERIFY(x == two);
|
|
VERIFY(y == two);
|
|
x = one;
|
|
y = x--;
|
|
VERIFY(x == zero);
|
|
VERIFY(y == one);
|
|
x = one;
|
|
y = --x;
|
|
VERIFY(x == zero);
|
|
VERIFY(y == zero);
|
|
x = max;
|
|
VERIFY_IS_VALID(x++);
|
|
x = max;
|
|
VERIFY_IS_INVALID(++x);
|
|
x = min;
|
|
VERIFY_IS_VALID(x--);
|
|
x = min;
|
|
VERIFY_IS_INVALID(--x);
|
|
|
|
gIntegerTypesTested++;
|
|
}
|
|
|
|
int main()
|
|
{
|
|
test<int8_t>();
|
|
test<uint8_t>();
|
|
test<int16_t>();
|
|
test<uint16_t>();
|
|
test<int32_t>();
|
|
test<uint32_t>();
|
|
test<int64_t>();
|
|
test<uint64_t>();
|
|
|
|
test<char>();
|
|
test<signed char>();
|
|
test<unsigned char>();
|
|
test<short>();
|
|
test<unsigned short>();
|
|
test<int>();
|
|
test<unsigned int>();
|
|
test<long>();
|
|
test<unsigned long>();
|
|
|
|
const int MIN_TYPES_TESTED = 9;
|
|
if (gIntegerTypesTested < MIN_TYPES_TESTED) {
|
|
std::cerr << "Only " << gIntegerTypesTested << " have been tested. "
|
|
<< "This should not be less than " << MIN_TYPES_TESTED << "."
|
|
<< std::endl;
|
|
gTestsFailed++;
|
|
}
|
|
|
|
std::cerr << gTestsFailed << " tests failed, "
|
|
<< gTestsPassed << " tests passed out of "
|
|
<< gTestsFailed + gTestsPassed
|
|
<< " tests, covering " << gIntegerTypesTested
|
|
<< " distinct integer types." << std::endl;
|
|
|
|
return gTestsFailed > 0;
|
|
}
|