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.NET Decompiler with support for PDB generation, ReadyToRun, Metadata (&more) - cross-platform!
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ILSpy/ICSharpCode.Decompiler.Tests/TestCases/Pretty/LiftedOperators.cs

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// Copyright (c) AlphaSierraPapa for the SharpDevelop Team
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.
using System;
using System.Runtime.InteropServices;
namespace ICSharpCode.Decompiler.Tests.TestCases.Pretty
{
public static class LiftedOperators
{
// C# uses 4 different patterns of IL for lifted operators: bool, other primitive types, decimal, other structs.
// Different patterns are used depending on whether both of the operands are nullable or only the left/right operand is nullable.
// Negation must not be pushed through such comparisons because it would change the semantics (except for equality/inequality).
// A comparison used in a condition differs somewhat from a comparison used as a simple value.
public static void BoolBasic(bool? a, bool? b)
{
if (a == b) {
Console.WriteLine();
}
if (a != b) {
Console.WriteLine();
}
}
public static void BoolComplex(bool? a, Func<bool> x)
{
if (a == x()) {
Console.WriteLine();
}
if (a != x()) {
Console.WriteLine();
}
if (x() == a) {
Console.WriteLine();
}
if (x() != a) {
Console.WriteLine();
}
}
public static void BoolConst(bool? a)
{
if (a == true) {
Console.WriteLine();
}
if (a != true) {
Console.WriteLine();
}
if (a == false) {
Console.WriteLine();
}
if (a != false) {
Console.WriteLine();
}
if (a ?? true) {
Console.WriteLine();
}
if (a ?? false) {
Console.WriteLine();
}
}
public static void BoolValueBasic(bool? a, bool? b)
{
Console.WriteLine(a == b);
Console.WriteLine(a != b);
Console.WriteLine(a & b);
Console.WriteLine(a | b);
Console.WriteLine(a ^ b);
Console.WriteLine(a ?? b);
Console.WriteLine(!a);
a &= b;
a |= b;
a ^= b;
}
public static void BoolValueComplex(bool? a, Func<bool> x)
{
Console.WriteLine(a == x());
Console.WriteLine(a != x());
Console.WriteLine(x() == a);
Console.WriteLine(x() != a);
//Console.WriteLine(a & x()); // we currently can't tell the order
//Console.WriteLine(a | x()); // of the operands in bool [&|] bool?
Console.WriteLine(a ^ x());
Console.WriteLine(a ?? x());
//a &= x(); -- also affected by order of operand problem
//a |= x();
a ^= x();
Console.WriteLine(x() & a);
Console.WriteLine(x() | a);
Console.WriteLine(x() ^ a);
(new bool?[0])[0] ^= x();
(new bool?[0])[0] ^= a;
}
public static void BoolValueConst(bool? a)
{
Console.WriteLine(a == true);
Console.WriteLine(a != true);
Console.WriteLine(a == false);
Console.WriteLine(a != false);
Console.WriteLine(a ?? true);
Console.WriteLine(a ?? false);
}
public static void IntBasic(int? a, int? b)
{
if (a == b) {
Console.WriteLine();
}
if (a != b) {
Console.WriteLine();
}
if (a > b) {
Console.WriteLine();
}
if (a < b) {
Console.WriteLine();
}
if (a >= b) {
Console.WriteLine();
}
if (a <= b) {
Console.WriteLine();
}
if (!(a > b)) {
Console.WriteLine();
}
if (!(a <= b)) {
Console.WriteLine();
}
}
public static void IntComplex(int? a, Func<int> x)
{
if (a == x()) {
Console.WriteLine();
}
if (a != x()) {
Console.WriteLine();
}
if (a > x()) {
Console.WriteLine();
}
if (x() == a) {
Console.WriteLine();
}
if (x() != a) {
Console.WriteLine();
}
if (x() > a) {
Console.WriteLine();
}
if (!(a > x())) {
Console.WriteLine();
}
if (!(a <= x())) {
Console.WriteLine();
}
}
public static void IntConst(int? a)
{
if (a == 2) {
Console.WriteLine();
}
if (a != 2) {
Console.WriteLine();
}
if (a > 2) {
Console.WriteLine();
}
if (2 == a) {
Console.WriteLine();
}
if (2 != a) {
Console.WriteLine();
}
if (2 > a) {
Console.WriteLine();
}
}
public static void IntValueBasic(int? a, int? b)
{
Console.WriteLine(a == b);
Console.WriteLine(a != b);
Console.WriteLine(a > b);
Console.WriteLine(!(a > b));
Console.WriteLine(!(a >= b));
Console.WriteLine(a + b);
Console.WriteLine(a - b);
Console.WriteLine(a * b);
Console.WriteLine(a / b);
Console.WriteLine(a % b);
Console.WriteLine(a & b);
Console.WriteLine(a | b);
Console.WriteLine(a ^ b);
Console.WriteLine(a << b);
Console.WriteLine(a >> b);
Console.WriteLine(a ?? b);
Console.WriteLine(-a);
Console.WriteLine(~a);
// TODO:
//Console.WriteLine(a++);
//Console.WriteLine(a--);
Console.WriteLine(++a);
Console.WriteLine(--a);
a += b;
a -= b;
a *= b;
a /= b;
a %= b;
a &= b;
a |= b;
a ^= b;
a <<= b;
a >>= b;
}
public static void IntValueComplex(int? a, Func<int> x)
{
Console.WriteLine(a == x());
Console.WriteLine(a != x());
Console.WriteLine(a > x());
Console.WriteLine(x() == a);
Console.WriteLine(x() != a);
Console.WriteLine(x() > a);
Console.WriteLine(a + x());
Console.WriteLine(a - x());
Console.WriteLine(a * x());
Console.WriteLine(a / x());
Console.WriteLine(a % x());
Console.WriteLine(a & x());
Console.WriteLine(a | x());
Console.WriteLine(a ^ x());
Console.WriteLine(a << x());
Console.WriteLine(a >> x());
Console.WriteLine(a ?? x());
a += x();
a -= x();
a *= x();
a /= x();
a %= x();
a &= x();
a |= x();
a ^= x();
a <<= x();
a >>= x();
Console.WriteLine(x() + a);
(new int?[0])[0] += x();
}
public static void IntValueConst(int? a)
{
Console.WriteLine(a == 2);
Console.WriteLine(a != 2);
Console.WriteLine(a > 2);
Console.WriteLine(2 == a);
Console.WriteLine(2 != a);
Console.WriteLine(2 > a);
Console.WriteLine(a + 2);
Console.WriteLine(a - 2);
Console.WriteLine(a * 2);
Console.WriteLine(a / 2);
Console.WriteLine(a % 2);
Console.WriteLine(a & 2);
Console.WriteLine(a | 2);
Console.WriteLine(a ^ 2);
Console.WriteLine(a << 2);
Console.WriteLine(a >> 2);
Console.WriteLine(a ?? 2);
a += 2;
a -= 2;
a *= 2;
a /= 2;
a %= 2;
a &= 2;
a |= 2;
a ^= 2;
a <<= 2;
a >>= 2;
Console.WriteLine(2 + a);
}
public static void NumberBasic(decimal? a, decimal? b)
{
if (a == b) {
Console.WriteLine();
}
#if ROSLYN
// Roslyn 2.9 started invoking op_Equality even if the source code says 'a != b'
if (!(a == b)) {
Console.WriteLine();
}
#else
if (a != b) {
Console.WriteLine();
}
#endif
if (a > b) {
Console.WriteLine();
}
if (a < b) {
Console.WriteLine();
}
if (a >= b) {
Console.WriteLine();
}
if (a <= b) {
Console.WriteLine();
}
if (!(a > b)) {
Console.WriteLine();
}
if (!(a < b)) {
Console.WriteLine();
}
}
public static void NumberComplex(decimal? a, Func<decimal> x)
{
// Tests deactivated because we insert redundant casts;
// TODO: revisit after decision has been made regarding the type system.
//if (a == x()) {
// Console.WriteLine();
//}
//if (a != x()) {
// Console.WriteLine();
//}
//if (a > x()) {
// Console.WriteLine();
//}
//if (x() == a) {
// Console.WriteLine();
//}
//if (x() != a) {
// Console.WriteLine();
//}
//if (x() > a) {
// Console.WriteLine();
//}
}
public static void NumberConst(decimal? a)
{
// Tests deactivated because we insert redundant casts;
// TODO: revisit after decision has been made regarding the type system.
//if (a == 2m) {
// Console.WriteLine();
//}
//if (a != 2m) {
// Console.WriteLine();
//}
//if (a > 2m) {
// Console.WriteLine();
//}
//if (2m == a) {
// Console.WriteLine();
//}
//if (2m != a) {
// Console.WriteLine();
//}
//if (2m > a) {
// Console.WriteLine();
//}
}
public static void NumberValueBasic(decimal? a, decimal? b)
{
Console.WriteLine(a == b);
#if ROSLYN
// Roslyn 2.9 started invoking op_Equality even if the source code says 'a != b'
Console.WriteLine(!(a == b));
#else
Console.WriteLine(a != b);
#endif
Console.WriteLine(a > b);
Console.WriteLine(!(a > b));
Console.WriteLine(!(a <= b));
Console.WriteLine(a + b);
Console.WriteLine(a - b);
Console.WriteLine(a * b);
Console.WriteLine(a / b);
Console.WriteLine(a % b);
Console.WriteLine(a ?? b);
Console.WriteLine(-a);
// TODO:
//Console.WriteLine(a++);
//Console.WriteLine(a--);
//Console.WriteLine(++a);
//Console.WriteLine(--a);
a += b;
a -= b;
a *= b;
a /= b;
a %= b;
}
public static void NumberValueComplex(decimal? a, Func<decimal> x)
{
// Tests deactivated because we insert redundant casts;
// TODO: revisit after decision has been made regarding the type system.
//Console.WriteLine(a == x());
//Console.WriteLine(a != x());
//Console.WriteLine(a > x());
//Console.WriteLine(x() == a);
//Console.WriteLine(x() != a);
//Console.WriteLine(x() > a);
//Console.WriteLine(a + x());
//Console.WriteLine(a - x());
//Console.WriteLine(a * x());
//Console.WriteLine(a / x());
//Console.WriteLine(a % x());
//Console.WriteLine(a ?? x());
//a += x();
//a -= x();
//a *= x();
//a /= x();
//a %= x();
//Console.WriteLine(x() + a);
//(new decimal?[0])[0] += x();
}
public static void NumberValueConst(decimal? a)
{
// Tests deactivated because we insert redundant casts;
// TODO: revisit after decision has been made regarding the type system.
//Console.WriteLine(a == 2m);
//Console.WriteLine(a != 2m);
//Console.WriteLine(a > 2m);
//Console.WriteLine(2m == a);
//Console.WriteLine(2m != a);
//Console.WriteLine(2m > a);
//Console.WriteLine(a + 2m);
//Console.WriteLine(a - 2m);
//Console.WriteLine(a * 2m);
//Console.WriteLine(a / 2m);
//Console.WriteLine(a % 2m);
//Console.WriteLine(a ?? 2m);
//a += 2m;
//a -= 2m;
//a *= 2m;
//a /= 2m;
//a %= 2m;
//Console.WriteLine(2m + a);
}
public static void CompareWithImplictCast(int? a, long? b)
{
if (a < b) {
Console.WriteLine();
}
if (a == b) {
Console.WriteLine();
}
// TODO: unnecessary cast
//if (a < 10L) {
// Console.WriteLine();
//}
//if (a == 10L) {
// Console.WriteLine();
//}
}
public static void CompareWithSignChange(int? a, int? b)
{
if ((uint?)a < (uint?)b) {
Console.WriteLine();
}
// TODO: unnecessary cast
//if ((uint?)a < 10) {
// Console.WriteLine();
//}
}
public static void StructBasic(TS? a, TS? b)
{
if (a == b) {
Console.WriteLine();
}
if (a != b) {
Console.WriteLine();
}
if (a > b) {
Console.WriteLine();
}
if (a < b) {
Console.WriteLine();
}
if (a >= b) {
Console.WriteLine();
}
if (a <= b) {
Console.WriteLine();
}
if (!(a == b)) {
Console.WriteLine();
}
if (!(a != b)) {
Console.WriteLine();
}
if (!(a > b)) {
Console.WriteLine();
}
}
public static void StructComplex(TS? a, Func<TS> x)
{
// Tests deactivated because we insert redundant casts;
// TODO: revisit after decision has been made regarding the type system.
//if (a == x()) {
// Console.WriteLine();
//}
//if (a != x()) {
// Console.WriteLine();
//}
//if (a > x()) {
// Console.WriteLine();
//}
//if (x() == a) {
// Console.WriteLine();
//}
//if (x() != a) {
// Console.WriteLine();
//}
//if (x() > a) {
// Console.WriteLine();
//}
}
public static void StructValueBasic(TS? a, TS? b, int? i)
{
Console.WriteLine(a == b);
Console.WriteLine(a != b);
Console.WriteLine(a > b);
Console.WriteLine(!(a == b));
Console.WriteLine(!(a != b));
Console.WriteLine(!(a > b));
Console.WriteLine(a + b);
Console.WriteLine(a - b);
Console.WriteLine(a * b);
Console.WriteLine(a / b);
Console.WriteLine(a % b);
Console.WriteLine(a & b);
Console.WriteLine(a | b);
Console.WriteLine(a ^ b);
Console.WriteLine(a << i);
Console.WriteLine(a >> i);
Console.WriteLine(a ?? b);
Console.WriteLine(+a);
Console.WriteLine(-a);
Console.WriteLine(!a);
Console.WriteLine(~a);
// TODO:
//Console.WriteLine(a++);
//Console.WriteLine(a--);
//Console.WriteLine(++a);
//Console.WriteLine(--a);
//Console.WriteLine((int?)a);
a += b;
a -= b;
a *= b;
a /= b;
a %= b;
a &= b;
a |= b;
a ^= b;
a <<= i;
a >>= i;
}
public static void StructValueComplex(TS? a, Func<TS> x, Func<int> i)
{
// Tests deactivated because we insert redundant casts;
// TODO: revisit after decision has been made regarding the type system.
//Console.WriteLine(a == x());
//Console.WriteLine(a != x());
//Console.WriteLine(a > x());
//Console.WriteLine(x() == a);
//Console.WriteLine(x() != a);
//Console.WriteLine(x() > a);
//Console.WriteLine(a + x());
//Console.WriteLine(a - x());
//Console.WriteLine(a * x());
//Console.WriteLine(a / x());
//Console.WriteLine(a % x());
//Console.WriteLine(a & x());
//Console.WriteLine(a | x());
//Console.WriteLine(a ^ x());
//Console.WriteLine(a << i());
//Console.WriteLine(a >> i());
//Console.WriteLine(a ?? x());
//a += x();
//a -= x();
//a *= x();
//a /= x();
//a %= x();
//a &= x();
//a |= x();
//a ^= x();
//a <<= i();
//a >>= i();
//Console.WriteLine(x() + a);
//(new TS?[0])[0] += x();
}
public static bool RetEq(int? a, int? b)
{
return a == b;
}
public static bool RetEqConv(long? a, int? b)
{
return a == b;
}
public static bool RetEqConst(long? a)
{
return a == 10;
}
public static bool RetIneqConst(long? a)
{
return a != 10;
}
public static bool RetLt(int? a, int? b)
{
return a < b;
}
public static bool RetLtConst(int? a)
{
return a < 10;
}
public static bool RetLtConv(long? a, int? b)
{
return a < b;
}
public static bool RetNotLt(int? a, int? b)
{
return !(a < b);
}
}
// dummy structure for testing custom operators
[StructLayout(LayoutKind.Sequential, Size = 1)]
public struct TS
{
// unary
public static TS operator +(TS a)
{
throw null;
}
public static TS operator -(TS a)
{
throw null;
}
public static TS operator !(TS a)
{
throw null;
}
public static TS operator ~(TS a)
{
throw null;
}
public static TS operator ++(TS a)
{
throw null;
}
public static TS operator --(TS a)
{
throw null;
}
public static explicit operator int(TS a)
{
throw null;
}
// binary
public static TS operator +(TS a, TS b)
{
throw null;
}
public static TS operator -(TS a, TS b)
{
throw null;
}
public static TS operator *(TS a, TS b)
{
throw null;
}
public static TS operator /(TS a, TS b)
{
throw null;
}
public static TS operator %(TS a, TS b)
{
throw null;
}
public static TS operator &(TS a, TS b)
{
throw null;
}
public static TS operator |(TS a, TS b)
{
throw null;
}
public static TS operator ^(TS a, TS b)
{
throw null;
}
public static TS operator <<(TS a, int b)
{
throw null;
}
public static TS operator >>(TS a, int b)
{
throw null;
}
// comparisons
public static bool operator ==(TS a, TS b)
{
throw null;
}
public static bool operator !=(TS a, TS b)
{
throw null;
}
public static bool operator <(TS a, TS b)
{
throw null;
}
public static bool operator <=(TS a, TS b)
{
throw null;
}
public static bool operator >(TS a, TS b)
{
throw null;
}
public static bool operator >=(TS a, TS b)
{
throw null;
}
public override bool Equals(object obj)
{
throw null;
}
public override int GetHashCode()
{
throw null;
}
}
internal class LiftedImplicitConversions
{
public int? ExtendI4(byte? b)
{
return b;
}
public int? ExtendToI4(sbyte? b)
{
return b;
}
public long? ExtendI8(byte? b)
{
return b;
}
public long? ExtendToI8(sbyte? b)
{
return b;
}
public long? ExtendI8(int? b)
{
return b;
}
public long? ExtendToI8(uint? b)
{
return b;
}
// TODO: unnecessary cast
//public double? ToFloat(int? b)
//{
// return b;
//}
//public long? InArithmetic(uint? b)
//{
// return 100L + b;
//}
public long? AfterArithmetic(uint? b)
{
return 100 + b;
}
// TODO: unnecessary cast
//public static double? InArithmetic2(float? nf, double? nd, float f)
//{
// return nf + nd + f;
//}
public static long? InArithmetic3(int? a, long? b, int? c, long d)
{
return a + b + c + d;
}
}
internal class LiftedExplicitConversions
{
private static void Print<T>(T? x) where T : struct
{
Console.WriteLine(x);
}
public static void UncheckedCasts(int? i4, long? i8, float? f)
{
Print((byte?)i4);
Print((short?)i4);
Print((uint?)i4);
Print((uint?)i8);
Print((uint?)f);
}
public static void CheckedCasts(int? i4, long? i8, float? f)
{
checked {
Print((byte?)i4);
Print((short?)i4);
Print((uint?)i4);
Print((uint?)i8);
//Print((uint?)f); TODO
}
}
}
internal class NullCoalescingTests
{
private static void Print<T>(T x)
{
Console.WriteLine(x);
}
public static void Objects(object a, object b)
{
Print(a ?? b);
}
public static void Nullables(int? a, int? b)
{
Print(a ?? b);
}
public static void NullableWithNonNullableFallback(int? a, int b)
{
Print(a ?? b);
}
public static void NullableWithImplicitConversion(short? a, int? b)
{
Print(a ?? b);
}
public static void NullableWithImplicitConversionAndNonNullableFallback(short? a, int b)
{
// TODO: unnecessary cast
//Print(a ?? b);
}
public static void Chain(int? a, int? b, int? c, int d)
{
Print(a ?? b ?? c ?? d);
}
public static void ChainWithImplicitConversions(int? a, short? b, long? c, byte d)
{
// TODO: unnecessary casts
//Print(a ?? b ?? c ?? d);
}
public static void ChainWithComputation(int? a, short? b, long? c, byte d)
{
// TODO: unnecessary casts
//Print((a + 1) ?? (b + 2) ?? (c + 3) ?? (d + 4));
}
public static object ReturnObjects(object a, object b)
{
return a ?? b;
}
public static int? ReturnNullables(int? a, int? b)
{
return a ?? b;
}
public static int ReturnNullableWithNonNullableFallback(int? a, int b)
{
return a ?? b;
}
public static int ReturnChain(int? a, int? b, int? c, int d)
{
return a ?? b ?? c ?? d;
}
public static long ReturnChainWithImplicitConversions(int? a, short? b, long? c, byte d)
{
//TODO: unnecessary casts
//return a ?? b ?? c ?? d;
return 0L;
}
public static long ReturnChainWithComputation(int? a, short? b, long? c, byte d)
{
//TODO: unnecessary casts
//return (a + 1) ?? (b + 2) ?? (c + 3) ?? (d + 4);
return 0L;
}
}
}