Null

CodeGen\SwitchIntegralJumpTableEmitter.cs (1)

116if (sortedCaseLabels[0].Key != ConstantValue.Null)

ConstantValue.cs (5)

93public static ConstantValue Nothing { get { return Null; } } 105return Null; 372case ConstantValueTypeDiscriminator.Null: return Null; 430case ConstantValueTypeDiscriminator.String: return Null; 744return 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)

3757return ConstantValue.Null;

Operations\ControlFlowGraphBuilder.cs (1)

3459? ConstantValue.Null

Binder\Binder_Await.cs (1)

370var receiver = new BoundLiteral(node, ConstantValue.Null, awaiterType);

Binder\Binder_Expressions.cs (3)

7363cv = ConstantValue.Null; 7771if (boundLeft.Kind == BoundKind.Literal && ((BoundLiteral)boundLeft).ConstantValueOpt == ConstantValue.Null) 7944if ((boundLeft is BoundDefaultLiteral || boundLeft is BoundDefaultExpression) && boundLeft.ConstantValueOpt == ConstantValue.Null &&

Binder\Binder_Invocation.cs (1)

1675{ IsBad: true } => ConstantValue.Null,

Binder\Binder_Operators.cs (6)

4715if (operand.ConstantValueOpt == ConstantValue.Null || 4855if (operandConstantValue == ConstantValue.Null) 4865(operandConstantValue == null || operandConstantValue == ConstantValue.Null); // a non-null constant is never null 5220operand = new BoundDefaultExpression(operand.Syntax, targetType: null, constantValueOpt: ConstantValue.Null, 5364/// - <see cref="ConstantValue.Null"/> 5390return ConstantValue.Null;

Binder\Binder_Patterns.cs (3)

579if (convertedExpression.Type is null && constantValueOpt != ConstantValue.Null) 608if (expression.ConstantValueOpt == ConstantValue.Null) 672if (constantValue == ConstantValue.Null)

Binder\DecisionDagBuilder.cs (1)

487if (constant.ConstantValue == ConstantValue.Null)

Binder\LockBinder.cs (1)

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

CodeGen\EmitStatement.cs (1)

1564if (stringConstant == ConstantValue.Null)

Compilation\CSharpCompilation.cs (1)

2214var dumbInstance = new BoundLiteral(syntax, ConstantValue.Null, namedType);

FlowAnalysis\AbstractFlowPass.cs (1)

687return node.ConstantValueOpt == ConstantValue.Null;

FlowAnalysis\DefiniteAssignment.cs (1)

909return value.ConstantValueOpt != ConstantValue.Null;

FlowAnalysis\NullableWalker_Patterns.cs (2)

167bool isExplicitNullCheck = cp.Value.ConstantValueOpt == ConstantValue.Null; 631Debug.Assert(t.Value != ConstantValue.Null);

Lowering\Extensions.cs (1)

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

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

383_factory.Convert(operandType, new BoundLiteral(syntax, ConstantValue.Null, objectType)),

Lowering\LocalRewriter\LocalRewriter_BinaryOperator.cs (3)

2015if (oldNode != null && (loweredLeft.ConstantValueOpt == ConstantValue.Null || loweredRight.ConstantValueOpt == ConstantValue.Null)) 2134MakeLiteral(syntax, ConstantValue.Null, objectType),

Lowering\LocalRewriter\LocalRewriter_ForEachStatement.cs (1)

454right: MakeLiteral(forEachSyntax, constantValue: ConstantValue.Null, type: null),

Lowering\LocalRewriter\LocalRewriter_LockStatement.cs (1)

35Debug.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)

128if (rewrittenExpression.ConstantValueOpt == ConstantValue.Null) 230if (boundLocal.ConstantValueOpt == ConstantValue.Null)

Lowering\SyntheticBoundNodeFactory.cs (2)

1250BoundExpression nullLiteral = new BoundLiteral(syntax, ConstantValue.Null, type) { WasCompilerGenerated = true }; 1803return RewriteNullableNullEquality(syntax, operatorKind, rewrittenExpr, Literal(ConstantValue.Null, objectType), boolType);

Symbols\Source\SourceComplexParameterSymbol.cs (1)

412var value = convertedExpression.ConstantValueOpt ?? ConstantValue.Null;

Symbols\TypeSymbolExtensions.cs (1)

638return ConstantValue.Null;

CodeGen\CodeGenOverridingAndHiding.cs (1)

4123Assert.Equal(ConstantValue.Null, parameterB.ExplicitDefaultConstantValue);

Attributes\AttributeTests_WellKnownAttributes.cs (1)

532Assert.Equal(ConstantValue.Null, constantValue);

Semantics\ConstantTests.cs (1)

4025nullConst = 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,