PlaceholderAbstractPart class abstract

Base class for all PlaceholderPart implementations that represent a segment of a parsed placeholder expression.

This class provides common functionality for handling the raw text of the part and recursive resolution of nested placeholders.

Concrete subclasses (e.g., PlaceholderTextPart, PlaceholderPart) must implement resolution behavior by overriding resolve(...).

Example:

class PlaceholderPart extends AbstractPart {
  final String key;

  PlaceholderPart(this.key) : super('\#{#key}');

  @override
  String resolve(PartResolutionContext ctx) {
    return resolveRecursively(ctx, key) ?? ctx.handleUnresolvablePlaceholder(key, text());
  }
}

This class should not be used directly—extend it to define custom parts.

Implemented types
Implementers

Constructors

PlaceholderAbstractPart(String _text)
Base class for all PlaceholderPart implementations that represent a segment of a parsed placeholder expression.
const

Properties

hashCode → int
The hash code for this object.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
resolve(PlaceholderPartResolutionContext resolutionContext) → String
Represents a segment or fragment of a placeholder expression.
inherited
resolveRecursively(PlaceholderPartResolutionContext resolutionContext, String key) → String?
Recursively resolves the placeholder identified by key using the provided resolutionContext.
text() → String
Returns the raw textual representation of this part.
override
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited