ExpressionRewriter class¶

Defined in

Namespace: ReactiveUI Assembly: ReactiveUI.Core.dll Full name: ReactiveUI.ExpressionRewriter Modifiers: public sealed

Summary¶

View source

        Rewrites and validates expression trees used by ReactiveUI binding infrastructure, normalizing
        supported constructs into a consistent shape.

Applies to

net10.0, net10.0-maccatalyst26.0, net10.0-desktop1.0, net10.0-browserwasm1.0, net10.0-tvos26.0, net10.0-windows10.0.19041, net10.0-macos26.0, net10.0-ios26.0, net10.0-android36.0, net9.0, net9.0-tvos18.0, net9.0-macos15.0, net9.0-maccatalyst18.0, net9.0-windows10.0.19041, net9.0-ios18.0, net9.0-desktop1.0, net8.0, net8.0-windows10.0.19041, net8.0-ios18.0, net8.0-maccatalyst18.0, net8.0-macos15.0, net8.0-tvos18.0, net8.0-ios17.5, net8.0-maccatalyst17.5, net8.0-macos14.5, netstandard2.1, net481, net462, net471

Class hierarchy

classDiagram
class ExpressionRewriter
class ExpressionVisitor
ExpressionVisitor <|-- ExpressionRewriter

Inherits from: ExpressionVisitor

Remarks¶

This visitor intentionally supports a constrained set of expression node types. Unsupported shapes are rejected with actionable exceptions to help callers correct their expressions.

Supported rewrites include:

ArrayIndex is rewritten into an indexer access (get_Item / Item).
Call to a special-name indexer method (get_Item) is rewritten into an IndexExpression.
ArrayLength is rewritten into member access to Length.
Convert is stripped.

Index expressions are only supported when all indices are constants.

Constructors¶

Name	Summary
.ctor

Methods¶

Name	Summary
Visit	Visits the specified expression node and rewrites supported shapes into their normalized form.
VisitBinary	Visits a BinaryExpression representing an array or indexer access and rewrites it as an appropriate expression tree...
VisitUnary	Visits a UnaryExpression node and rewrites it as needed for expression tree processing.
VisitMethodCall	Visits a method call expression representing an indexer access and rewrites it as an index expression if all arguments are constant.
VisitIndex	Validates that index expressions only use constant arguments, then defers to the base visitor.

Inherited members