2180if (ITypeSymbolHelpers.IsBooleanType(operation.Type) && 2181ITypeSymbolHelpers.IsBooleanType(operation.LeftOperand.Type) && 2182ITypeSymbolHelpers.IsBooleanType(operation.RightOperand.Type)) 2188ITypeSymbolHelpers.IsNullableOfBoolean(operation.Type) && 2189ITypeSymbolHelpers.IsNullableOfBoolean(operation.LeftOperand.Type) && 2190ITypeSymbolHelpers.IsNullableOfBoolean(operation.RightOperand.Type)) 2195else if (ITypeSymbolHelpers.IsObjectType(operation.Type) && 2196ITypeSymbolHelpers.IsObjectType(operation.LeftOperand.Type) && 2197ITypeSymbolHelpers.IsObjectType(operation.RightOperand.Type)) 2201else if (ITypeSymbolHelpers.IsDynamicType(operation.Type) && 2202(ITypeSymbolHelpers.IsDynamicType(operation.LeftOperand.Type) || 2203ITypeSymbolHelpers.IsDynamicType(operation.RightOperand.Type))) 2275ITypeSymbolHelpers.IsBooleanType(operation.Type) && 2276ITypeSymbolHelpers.IsBooleanType(operation.Operand.Type); 2498if (ITypeSymbolHelpers.IsBooleanType(left.Type)) 2503else if (ITypeSymbolHelpers.IsDynamicType(left.Type) || unaryOperatorMethod != null) 2508(ITypeSymbolHelpers.IsBooleanType(unaryOperatorMethod.ReturnType) && 2509(ITypeSymbolHelpers.IsNullableType(left.Type) || !ITypeSymbolHelpers.IsNullableType(unaryOperatorMethod.Parameters[0].Type)))) 2535if (!ITypeSymbolHelpers.IsDynamicType(left.Type)) 2595if (ITypeSymbolHelpers.IsNullableType(left.Type)) 2597if (unaryOperatorMethod == null ? isLifted : !ITypeSymbolHelpers.IsNullableType(unaryOperatorMethod.Parameters[0].Type)) 2603Debug.Assert(unaryOperatorMethod == null || !ITypeSymbolHelpers.IsNullableType(unaryOperatorMethod.Parameters[0].Type)); 2607else if (unaryOperatorMethod != null && ITypeSymbolHelpers.IsNullableType(unaryOperatorMethod.Parameters[0].Type)) 2612if (unaryOperatorMethod != null && ITypeSymbolHelpers.IsBooleanType(unaryOperatorMethod.ReturnType)) 2714Debug.Assert(ITypeSymbolHelpers.IsBooleanType(condition.Type)); 2763ITypeSymbolHelpers.IsBooleanType(binOp.Type) && 2764ITypeSymbolHelpers.IsBooleanType(binOp.LeftOperand.Type) && 2765ITypeSymbolHelpers.IsBooleanType(binOp.RightOperand.Type); 2876if (ITypeSymbolHelpers.IsBooleanType(condition.Type)) 2881if (ITypeSymbolHelpers.IsBooleanType(conditional.WhenTrue.Type) && 2882ITypeSymbolHelpers.IsBooleanType(conditional.WhenFalse.Type)) 2901if (ITypeSymbolHelpers.IsBooleanType(condition.Type)) 2905if (ITypeSymbolHelpers.IsBooleanType(coalesce.WhenNull.Type)) 3017if (ITypeSymbolHelpers.IsNullableType(valueTypeOpt) && 3018(!testConversion.IsIdentity || !ITypeSymbolHelpers.IsNullableType(operation.Type))) 3324Debug.Assert(ITypeSymbolHelpers.IsBooleanType(booleanType)); 3342Debug.Assert(ITypeSymbolHelpers.IsNullableType(valueType)); 3365Debug.Assert(ITypeSymbolHelpers.IsNullableType(value.Type)); 3367MakeInvalidOperation(ITypeSymbolHelpers.GetNullableUnderlyingType(value.Type), value); 3440if (ITypeSymbolHelpers.IsNullableType(operation.Type) && !ITypeSymbolHelpers.IsNullableType(currentConditionalAccess.WhenNotNull.Type)) 3468(operation.Type.IsReferenceType && !ITypeSymbolHelpers.IsNullableType(operation.Type)) 3556if (ITypeSymbolHelpers.IsNullableType(testExpressionType)) 4158else if (ITypeSymbolHelpers.IsNullableType(resource.Type)) 4180((value.Type!.Equals(iDisposable) || (!value.Type.IsReferenceType && !ITypeSymbolHelpers.IsNullableType(value.Type))) && disposeArguments.IsDefaultOrEmpty)); 4217return type?.IsValueType == true && !ITypeSymbolHelpers.IsNullableType(type); 4766ITypeSymbol? stepEnumUnderlyingTypeOrSelf = ITypeSymbolHelpers.GetEnumUnderlyingTypeOrSelf(operation.StepValue.Type); 4926!ITypeSymbolHelpers.IsSignedIntegralType(stepEnumUnderlyingTypeOrSelf) && 4927!ITypeSymbolHelpers.IsUnsignedIntegralType(stepEnumUnderlyingTypeOrSelf)) 4931if (ITypeSymbolHelpers.IsNullableType(stepValue.Type)) 4937ITypeSymbol? stepValueEnumUnderlyingTypeOrSelf = ITypeSymbolHelpers.GetEnumUnderlyingTypeOrSelf(stepValue.Type); 4939if (ITypeSymbolHelpers.IsNumericType(stepValueEnumUnderlyingTypeOrSelf)) 5094if (ITypeSymbolHelpers.IsUnsignedIntegralType(stepEnumUnderlyingTypeOrSelf)) 5114if (comparisonKind == BinaryOperatorKind.None && ITypeSymbolHelpers.IsSignedIntegralType(stepEnumUnderlyingTypeOrSelf)) 5160if (ITypeSymbolHelpers.IsNullableType(operation.LimitValue.Type)) 5331bool isNullable = ITypeSymbolHelpers.IsNullableType(operation.StepValue.Type); 5391Debug.Assert(ITypeSymbolHelpers.IsNullableType(controlVariableReferenceForIncrement.Type)); 5564bool leftIsNullable = ITypeSymbolHelpers.IsNullableType(operation.Value.Type); 5565bool rightIsNullable = ITypeSymbolHelpers.IsNullableType(compareWith.Type); 5675Debug.Assert(ITypeSymbolHelpers.IsNullableType(type)); 5676Debug.Assert(ITypeSymbolHelpers.GetNullableUnderlyingType(type).Equals(operand.Type));

137if (ITypeSymbolHelpers.IsNullableType(type)) 139type = ITypeSymbolHelpers.GetNullableUnderlyingType(type);

83!ITypeSymbolHelpers.IsNullableType(type) && !type.IsValueType) 227if (ITypeSymbolHelpers.IsNullableType(symbol) && !symbol.IsDefinition)

18else if (type.IsReferenceType || type.TypeKind == TypeKind.Pointer || ITypeSymbolHelpers.IsNullableType(type))