Null

CodeGen\SwitchIntegralJumpTableEmitter.cs (1)

109if (sortedCaseLabels[0].Key != ConstantValue.Null)

ConstantValue.cs (5)

91public static ConstantValue Nothing { get { return Null; } } 103return Null; 368case ConstantValueTypeDiscriminator.Null: return Null; 426case ConstantValueTypeDiscriminator.String: return Null; 740return ReferenceEquals(this, Null);

MetadataReader\MetadataDecoder.cs (3)

1022value = (type.IsReferenceType || type.TypeKind == TypeKind.Pointer || type.TypeKind == TypeKind.FunctionPointer) ? ConstantValue.Null : ConstantValue.Bad; 1119return ConstantValue.Null; 1132return ConstantValue.Null;

MetadataReader\PEModule.cs (1)

3476return ConstantValue.Null;

Operations\ControlFlowGraphBuilder.cs (1)

3442? ConstantValue.Null

Binder\Binder_Await.cs (1)

369var receiver = new BoundLiteral(node, ConstantValue.Null, awaiterType);

Binder\Binder_Expressions.cs (3)

6245cv = ConstantValue.Null; 6651if (boundLeft.Kind == BoundKind.Literal && ((BoundLiteral)boundLeft).ConstantValueOpt == ConstantValue.Null) 6808if ((boundLeft is BoundDefaultLiteral || boundLeft is BoundDefaultExpression) && boundLeft.ConstantValueOpt == ConstantValue.Null &&

Binder\Binder_Invocation.cs (1)

1366{ IsBad: true } => ConstantValue.Null,

Binder\Binder_Operators.cs (6)

3245if (operand.ConstantValueOpt == ConstantValue.Null || 3385if (operandConstantValue == ConstantValue.Null) 3395(operandConstantValue == null || operandConstantValue == ConstantValue.Null); // a non-null constant is never null 3721operand = new BoundDefaultExpression(operand.Syntax, targetType: null, constantValueOpt: ConstantValue.Null, 3865/// - <see cref="ConstantValue.Null"/> 3886return ConstantValue.Null;

Binder\Binder_Patterns.cs (3)

569if (convertedExpression.Type is null && constantValueOpt != ConstantValue.Null) 598if (expression.ConstantValueOpt == ConstantValue.Null) 662if (constantValue == ConstantValue.Null)

Binder\DecisionDagBuilder.cs (1)

484if (constant.ConstantValue == ConstantValue.Null)

Binder\LockBinder.cs (1)

46if (expr.ConstantValueOpt != ConstantValue.Null || Compilation.FeatureStrictEnabled) // Dev10 allows the null literal.

CodeGen\EmitStatement.cs (1)

1535if (stringConstant == ConstantValue.Null)

Compilation\CSharpCompilation.cs (1)

2012var dumbInstance = new BoundLiteral(syntax, ConstantValue.Null, namedType);

FlowAnalysis\AbstractFlowPass.cs (1)

681return node.ConstantValueOpt == ConstantValue.Null;

FlowAnalysis\DefiniteAssignment.cs (1)

878return value.ConstantValueOpt != ConstantValue.Null;

FlowAnalysis\NullableWalker_Patterns.cs (2)

145bool isExplicitNullCheck = cp.Value.ConstantValueOpt == ConstantValue.Null; 591Debug.Assert(t.Value != ConstantValue.Null);

Lowering\Extensions.cs (1)

80if ((object)expr.Type == null && expr.ConstantValueOpt == ConstantValue.Null)

Lowering\LocalRewriter\LocalRewriter.PatternLocalRewriter.cs (1)

379_factory.Convert(operandType, new BoundLiteral(syntax, ConstantValue.Null, objectType)),

Lowering\LocalRewriter\LocalRewriter_BinaryOperator.cs (3)

1917if (oldNode != null && (loweredLeft.ConstantValueOpt == ConstantValue.Null || loweredRight.ConstantValueOpt == ConstantValue.Null)) 2036MakeLiteral(syntax, ConstantValue.Null, objectType),

Lowering\LocalRewriter\LocalRewriter_ForEachStatement.cs (1)

390right: MakeLiteral(forEachSyntax, constantValue: ConstantValue.Null, type: null),

Lowering\LocalRewriter\LocalRewriter_LockStatement.cs (1)

32Debug.Assert(rewrittenArgument.ConstantValueOpt == ConstantValue.Null);

Lowering\LocalRewriter\LocalRewriter_TupleBinaryOperator.cs (1)

206return new BoundLiteral(expr.Syntax, ConstantValue.Null, expr.Type);

Lowering\LocalRewriter\LocalRewriter_UsingStatement.cs (2)

127if (rewrittenExpression.ConstantValueOpt == ConstantValue.Null) 229if (boundLocal.ConstantValueOpt == ConstantValue.Null)

Lowering\SyntheticBoundNodeFactory.cs (2)

1169BoundExpression nullLiteral = new BoundLiteral(syntax, ConstantValue.Null, type) { WasCompilerGenerated = true }; 1661return RewriteNullableNullEquality(syntax, operatorKind, rewrittenExpr, Literal(ConstantValue.Null, objectType), boolType);

Symbols\Source\SourceComplexParameterSymbol.cs (1)

404var value = convertedExpression.ConstantValueOpt ?? ConstantValue.Null;

Symbols\TypeSymbolExtensions.cs (1)

573return ConstantValue.Null;

CodeGen\CodeGenOverridingAndHiding.cs (1)

4119Assert.Equal(ConstantValue.Null, parameterB.ExplicitDefaultConstantValue);

Attributes\AttributeTests_WellKnownAttributes.cs (1)

531Assert.Equal(ConstantValue.Null, constantValue);

Rewriters\LocalDeclarationRewriter.cs (1)

146return new BoundLiteral(syntax, ConstantValue.Null, byteArrayType);

Semantics\ConstantTests.cs (1)

4006nullConst = ConstantValue.Null;

Semantics\NamedAndOptionalTests.cs (5)

2143Assert.Equal(ConstantValue.Null, parameters[1].ExplicitDefaultConstantValue); 2194Assert.Equal(ConstantValue.Null, parameters[1].ExplicitDefaultConstantValue); 2213Assert.Equal(ConstantValue.Null, parameters[4].ExplicitDefaultConstantValue); 2219Assert.Equal(ConstantValue.Null, parameters[5].ExplicitDefaultConstantValue); 2359Assert.Equal(ConstantValue.Null, parameters[1].ExplicitDefaultConstantValue);

PDB\PdbHelpers.cs (3)

101(SpecialType.System_String, 0) => ConstantValue.Null, 104(SpecialType.System_Object, 0) => ConstantValue.Null, 107(SpecialType.None, 0) when type.IsReferenceType => ConstantValue.Null,

Analysis\InitializerRewriter.vb (1)

77New BoundLiteral(syntax, ConstantValue.Null, Nothing),

Binding\Binder_Expressions.vb (1)

4430cv = ConstantValue.Null

Binding\Binder_Invocation.vb (4)

3207defaultConstantValue = ConstantValue.Null 3260defaultArgument = New BoundLiteral(syntax, ConstantValue.Null, Nothing) 3272Dim argument = New BoundLiteral(syntax, ConstantValue.Null, param.Type).MakeCompilerGenerated() 3280defaultArgument = New BoundLiteral(syntax, ConstantValue.Null, Nothing)

Lowering\SyntheticBoundNodeFactory.vb (3)

814Dim nullLiteral As BoundExpression = New BoundLiteral(_syntax, ConstantValue.Null, Nothing) 821Dim nullLiteral As BoundExpression = New BoundLiteral(_syntax, ConstantValue.Null, type) 826Dim nullLiteral As BoundExpression = New BoundLiteral(_syntax, ConstantValue.Null, Nothing)

Symbols\Source\SourceParameterSymbol.vb (1)

430Return ConstantValue.Null

Rewriters\LocalDeclarationRewriter.vb (1)

74Dim customTypeInfoPayload = New BoundLiteral(syntax, ConstantValue.Null, byteArrayType)

Semantics\Conversions.vb (17)

Semantics\OptionalArgumentTests.vb (2)

2327Assert.Equal(ConstantValue.Null, parameters(1).ExplicitDefaultConstantValue) 2416Assert.Equal(ConstantValue.Null, parameters(1).ExplicitDefaultConstantValue)

Semantics\OverloadResolution.vb (6)

197Dim longConst As BoundExpression = New BoundConversion(_syntaxNode, New BoundLiteral(_syntaxNode, ConstantValue.Null, Nothing), ConversionKind.Widening, True, True, ConstantValue.Create(-1L), c1.GetSpecialType(System_Int64), Nothing) 202Dim doubleConst As BoundExpression = New BoundConversion(_syntaxNode, New BoundLiteral(_syntaxNode, ConstantValue.Null, Nothing), ConversionKind.Widening, True, True, ConstantValue.Create(0.0R), c1.GetSpecialType(System_Double), Nothing) 2883Dim DoubleMaxValue As BoundExpression = New BoundConversion(_syntaxNode, New BoundLiteral(_syntaxNode, ConstantValue.Null, Nothing), ConversionKind.Widening, True, True, ConstantValue.Create(Double.MaxValue), c1.GetSpecialType(System_Double), Nothing) 2884Dim IntegerMaxValue As BoundExpression = New BoundConversion(_syntaxNode, New BoundLiteral(_syntaxNode, ConstantValue.Null, Nothing), ConversionKind.Widening, True, True, ConstantValue.Create(Integer.MaxValue), c1.GetSpecialType(System_Int32), Nothing) 3074Dim DoubleMaxValue As BoundExpression = New BoundConversion(_syntaxNode, New BoundLiteral(_syntaxNode, ConstantValue.Null, Nothing), ConversionKind.Widening, True, True, ConstantValue.Create(Double.MaxValue), c1.GetSpecialType(System_Double), Nothing) 3075Dim IntegerMaxValue As BoundExpression = New BoundConversion(_syntaxNode, New BoundLiteral(_syntaxNode, ConstantValue.Null, Nothing), ConversionKind.Widening, True, True, ConstantValue.Create(Integer.MaxValue), c1.GetSpecialType(System_Int32), Nothing)