Docsv3.20.2
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Class

ParameterDescriptor

abstract

One modifier parameter: the unit through which markup tokens, rule defaults, the modifier field, and per-range ownership resolve to a single value.

Remarks

A descriptor is a static identity declared once per (modifier type, parameter) in the modifier's nested Param class and aggregated by Descriptors. The cascade resolves, weakest first: the modifier field, the rule's default token, the explicit markup token, and finally owned values composed on top. Its invalidation is the field's own declared change notification, so a write through any stage raises exactly what a field write raises.

Derived Types(1)

Types that inherit from ParameterDescriptor.

C
ParameterDescriptor<TModifier, TValue>
Typed descriptor of one TModifier parameter.
public string Id{ get }

Stable identifier persisted by rule bindings — the backing field name.

public string DisplayName{ get }

Human-readable name for editor surfaces.

public int Slot{ get }

Markup slot among the declaring type's own parameters, or -1 when the parameter has no markup presence; SlotOn gives its slot on a concrete modifier.

public Type ValueType{ get }

Concrete value type.

public IPropertyValueAdapter SerializedValues{ get }

Serialized value storage selected by this parameter's generated accessor.

public Type ModifierType{ get }

Modifier type declaring this parameter.

public ParameterCompositions SupportedCompositions{ get; set }

Operations owned values may compose with.

public abstract void Invalidate()

Raises the owning modifier's declared invalidation for this parameter.

public static ParameterDescriptor Find()

Finds a descriptor by Id in a modifier's declared set, or null.

public static ParameterDescriptor<TModifier,TValue> From()

Creates a descriptor at one of its declaring type's own markup slots; -1 declares a parameter without markup presence.

public static ParameterDescriptor<TModifier,TValue> Custom()

Creates a descriptor over explicit delegates, for parameters whose root lives in nested state rather than a direct field of the modifier.

public static ParameterDescriptor<TModifier,TValue> FromEnum()

Creates a descriptor for an enum parameter, parsed by member name or unique initial, at one of its declaring type's own markup slots; -1 declares a parameter without markup presence.

public int SlotOn()

Positional markup slot of this parameter on modifier's concrete type. A subclass's own parameters precede inherited ones in the markup contract, so a base-declared parameter sits later on a subclass range than Slot says.

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