Interface KotlinParameterElement

All Superinterfaces:

AnnotatedElement, AnnotationMetadata, AnnotationMetadataDelegate, AnnotationMetadataProvider, AnnotationSource, Described, Element, MutableAnnotationMetadataDelegate<Element>, Named, ParameterElement, TypedElement

public interface KotlinParameterElement
extends ParameterElement

Represents a Kotlin parameter to a method or constructor.

Implementing this interface additionally signals that defaulted parameters follow Kotlin's calling convention: a defaults bitmask plus the synthetic $default overload. It is therefore not a general marker for optional parameters — use ParameterElement.hasDefault() for that, and io.micronaut.inject.writer.ParameterDefaultValueProvider for languages that evaluate the default in the caller.

Since:

4.1.0

Author:

Denis Stepanov

Field Summary

Fields inherited from interface AnnotationMetadata

CLASS_NAME_SUFFIX, EMPTY_METADATA, VALUE_MEMBER

Fields inherited from interface AnnotationSource

EMPTY

Fields inherited from interface Element

EMPTY_ELEMENT_ARRAY

Fields inherited from interface MutableAnnotationMetadataDelegate

EMPTY

Fields inherited from interface ParameterElement

ZERO_PARAMETER_ELEMENTS

Method Summary

Modifier and Type	Method	Description
boolean	hasDefault()	Whether the parameter declares a default value in the source language, and is therefore optional at the call site.

Methods inherited from interface AnnotatedElement

isDeclaredNonNull, isDeclaredNullable, isNonNull, isNullable

Methods inherited from interface AnnotationMetadata

enumValuesSet, enumValuesSet, getValues, hasDeclaredStereotype, hasStereotypeNonRepeating, isAnnotationPresent, isDeclaredAnnotationPresent

Methods inherited from interface AnnotationMetadataDelegate

booleanValue, booleanValue, booleanValue, booleanValue, classValue, classValue, classValue, classValue, classValues, classValues, classValues, classValues, copyAnnotationMetadata, doubleValue, doubleValue, doubleValue, enumValue, enumValue, enumValue, enumValue, enumValues, enumValues, enumValues, enumValues, findAnnotation, findAnnotation, findDeclaredAnnotation, findDeclaredAnnotation, findRepeatableAnnotation, findRepeatableAnnotation, getAnnotation, getAnnotation, getAnnotationNameByStereotype, getAnnotationNameByStereotype, getAnnotationNames, getAnnotationNamesByStereotype, getAnnotationNamesByStereotype, getAnnotationType, getAnnotationType, getAnnotationTypeByStereotype, getAnnotationTypeByStereotype, getAnnotationTypesByStereotype, getAnnotationTypesByStereotype, getAnnotationTypesByStereotype, getAnnotationValuesByName, getAnnotationValuesByStereotype, getAnnotationValuesByType, getDeclaredAnnotation, getDeclaredAnnotation, getDeclaredAnnotationNameByStereotype, getDeclaredAnnotationNames, getDeclaredAnnotationNamesByStereotype, getDeclaredAnnotationTypeByStereotype, getDeclaredAnnotationTypeByStereotype, getDeclaredAnnotationValuesByName, getDeclaredAnnotationValuesByType, getDeclaredMetadata, getDeclaredStereotypeAnnotationNames, getDefaultValue, getDefaultValue, getDefaultValue, getDefaultValue, getDefaultValues, getStereotypeAnnotationNames, getTargetAnnotationMetadata, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValue, getValues, getValues, hasAnnotation, hasAnnotation, hasDeclaredAnnotation, hasDeclaredAnnotation, hasDeclaredStereotype, hasDeclaredStereotype, hasDeclaredStereotype, hasEvaluatedExpressions, hasPropertyExpressions, hasSimpleAnnotation, hasSimpleDeclaredAnnotation, hasStereotype, hasStereotype, hasStereotype, hasStereotype, intValue, intValue, intValue, isAnnotationPresent, isDeclaredAnnotationPresent, isEmpty, isFalse, isFalse, isPresent, isPresent, isRepeatableAnnotation, isRepeatableAnnotation, isTrue, isTrue, longValue, longValue, stringValue, stringValue, stringValue, stringValue, stringValues, stringValues, stringValues, stringValues, synthesize, synthesize, synthesizeAll, synthesizeAnnotationsByType, synthesizeDeclared, synthesizeDeclared, synthesizeDeclared, synthesizeDeclaredAnnotationsByType

Methods inherited from interface AnnotationMetadataProvider

getAnnotationMetadata

Methods inherited from interface Element

annotate, annotate, annotate, annotate, annotate, getDescription, getDocumentation, getDocumentation, getModifiers, getName, getNativeType, getSimpleName, isAbstract, isFinal, isPackagePrivate, isPrivate, isProtected, isPublic, isStatic, isSynthetic, removeAnnotation, removeAnnotation, removeAnnotationIf, removeStereotype, removeStereotype

Methods inherited from interface ParameterElement

getDescription, getMethodElement, getType, withAnnotationMetadata

Methods inherited from interface TypedElement

getArrayDimensions, getGenericType, isArray, isPrimitive, isVoid

Method Details

hasDefault

boolean hasDefault()

Description copied from interface: ParameterElement

Whether the parameter declares a default value in the source language, and is therefore optional at the call site.

This reports only that a default exists. How the value is obtained is language specific and is deliberately not part of this contract:

• some languages evaluate the default in the caller, in which case the language module may contribute an io.micronaut.inject.writer.ParameterDefaultValueProvider to supply it;
• others evaluate it in the callee and require a dedicated calling convention, as KotlinParameterElement does.

Specified by:

hasDefault in interface ParameterElement

Returns:

True if the parameter has a default value