Delen via


ICoalesceOperation Interface

Definition

Represents a coalesce operation with two operands: (1) Value, which is the first operand that is unconditionally evaluated and is the result of the operation if non null. (2) WhenNull, which is the second operand that is conditionally evaluated and is the result of the operation if Value is null.

Current usage: (1) C# null-coalescing expression "Value ?? WhenNull". (2) VB binary conditional expression "If(Value, WhenNull)".

public interface class ICoalesceOperation : Microsoft::CodeAnalysis::IOperation
public interface ICoalesceOperation : Microsoft.CodeAnalysis.IOperation
type ICoalesceOperation = interface
    interface IOperation
Public Interface ICoalesceOperation
Implements IOperation
Implements

Remarks

This node is associated with the following operation kinds:

This interface is reserved for implementation by its associated APIs. We reserve the right to change it in the future.

Properties

ChildOperations

An enumerable of child operations for this operation.

(Inherited from IOperation)
Children
Obsolete.

An array of child operations for this operation. Deprecated: please use ChildOperations.

(Inherited from IOperation)
ConstantValue

If the operation is an expression that evaluates to a constant value, HasValue is true and Value is the value of the expression. Otherwise, HasValue is false.

(Inherited from IOperation)
IsImplicit

Set to True if compiler generated /implicitly computed by compiler code

(Inherited from IOperation)
Kind

Identifies the kind of the operation.

(Inherited from IOperation)
Language

The source language of the IOperation. Possible values are CSharp and VisualBasic.

(Inherited from IOperation)
Parent

IOperation that has this operation as a child. Null for the root.

(Inherited from IOperation)
SemanticModel

Optional semantic model that was used to generate this operation. Non-null for operations generated from source with GetOperation(SyntaxNode, CancellationToken) API and operation callbacks made to analyzers. Null for operations inside a ControlFlowGraph.

(Inherited from IOperation)
Syntax

Syntax that was analyzed to produce the operation.

(Inherited from IOperation)
Type

Result type of the operation, or null if the operation does not produce a result.

(Inherited from IOperation)
Value

Operation to be unconditionally evaluated.

ValueConversion

Conversion associated with Value when it is not null/Nothing. Identity if result type of the operation is the same as type of Value. Otherwise, if type of Value is nullable, then conversion is applied to an unwrapped Value, otherwise to the Value itself.

WhenNull

Operation to be conditionally evaluated if Value evaluates to null/Nothing.

Methods

Accept(OperationVisitor) (Inherited from IOperation)
Accept<TArgument,TResult>(OperationVisitor<TArgument,TResult>, TArgument) (Inherited from IOperation)

Extension Methods

Descendants(IOperation)

Returns all the descendant operations of the given operation in evaluation order.

DescendantsAndSelf(IOperation)

Returns all the descendant operations of the given operation including the given operation in evaluation order.

Applies to