zdm/event-bus
zdm/event-bus
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Remove USE_PARAMETER #35

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kske merged 4 commits from f/remove-use-parameter into develop 2022-01-13 14:40:14 +01:00
Conversation 0 Commits 4 Files Changed 6 +7 -24
3 changed files with 7 additions and 24 deletions
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10
core/src/main/java/dev/kske/eventbus/core/Event.java
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@ -30,13 +30,5 @@ public @interface Event {
* @return the event type accepted by the handler * @return the event type accepted by the handler
* @since 1.0.0 * @since 1.0.0
*/ */
Class<?> value() default USE_PARAMETER.class; Class<?> value() default void.class;
/**
* Signifies that the event type the handler listens to is determined by the type of its only
* parameter.
*
* @since 0.0.3
*/
static final class USE_PARAMETER {}
} }

3
core/src/main/java/dev/kske/eventbus/core/handler/ReflectiveEventHandler.java
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@ -3,7 +3,6 @@ package dev.kske.eventbus.core.handler;
import java.lang.reflect.*; import java.lang.reflect.*;
import dev.kske.eventbus.core.*; import dev.kske.eventbus.core.*;
import dev.kske.eventbus.core.Event.USE_PARAMETER;
/** /**
* An event handler wrapping a method annotated with {@link Event} and executing it using * An event handler wrapping a method annotated with {@link Event} and executing it using
@ -37,7 +36,7 @@ public final class ReflectiveEventHandler implements EventHandler {
boolean defPolymorphism, int defPriority) throws EventBusException { boolean defPolymorphism, int defPriority) throws EventBusException {
this.listener = listener; this.listener = listener;
this.method = method; this.method = method;
useParameter = annotation.value() == USE_PARAMETER.class; useParameter = annotation.value() == void.class;
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delvh commented 2022-01-13 13:39:24 +01:00
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|| annotation.value == Void.class

`|| annotation.value == Void.class`
kske commented 2022-01-13 14:40:00 +01:00
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That wouldn't be the default type though. Yes, using Void as an event type doesn't make much sense, but it is possible, which isn't the case for void.

That wouldn't be the default type though. Yes, using `Void` as an event type doesn't make much sense, but it is possible, which isn't the case for `void`.
👍 1
// Check handler signature // Check handler signature
if (method.getParameterCount() == 0 && useParameter) if (method.getParameterCount() == 0 && useParameter)

18
proc/src/main/java/dev/kske/eventbus/proc/EventProcessor.java
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@ -47,13 +47,12 @@ public class EventProcessor extends AbstractProcessor {
// Task failed successfully // Task failed successfully
eventType = e.getTypeMirror(); eventType = e.getTypeMirror();
useParameter = processingEnv.getTypeUtils().isSameType(eventType, useParameter = eventType.getKind() == TypeKind.VOID;
getTypeMirror(Event.USE_PARAMETER.class));
} }
// Check handler signature // Check handler signature
boolean pass = false; boolean pass = false;
if (useParameter && eventHandler.getParameters().size() == 0) if (useParameter && eventHandler.getParameters().isEmpty())
error(eventHandler, "The method or the annotation must define the event type"); error(eventHandler, "The method or the annotation must define the event type");
else if (!useParameter && eventHandler.getParameters().size() == 1) else if (!useParameter && eventHandler.getParameters().size() == 1)
error(eventHandler, error(eventHandler,
@ -100,14 +99,15 @@ public class EventProcessor extends AbstractProcessor {
boolean hasListenerPriority = listenerPriority != null; boolean hasListenerPriority = listenerPriority != null;
// Effective polymorphism // Effective polymorphism
boolean polymorphic = boolean polymorphic =
hasListenerPolymorphic ? listenerPolymorphic.value() : defPolymorphic; hasListenerPolymorphic ? listenerPolymorphic.value() : defPolymorphic;
boolean hasHandlerPolymorphic = eventHandler.getAnnotation(Polymorphic.class) != null; boolean hasHandlerPolymorphic = eventHandler.getAnnotation(Polymorphic.class) != null;
if (hasHandlerPolymorphic) if (hasHandlerPolymorphic)
polymorphic = eventHandler.getAnnotation(Polymorphic.class).value(); polymorphic = eventHandler.getAnnotation(Polymorphic.class).value();
// Effective priority // Effective priority
int priority = hasListenerPriority ? listenerPriority.value() : defPriority; int priority =
hasListenerPriority ? listenerPriority.value() : defPriority;
boolean hasHandlerPriority = eventHandler.getAnnotation(Priority.class) != null; boolean hasHandlerPriority = eventHandler.getAnnotation(Priority.class) != null;
if (hasHandlerPriority) if (hasHandlerPriority)
priority = eventHandler.getAnnotation(Priority.class).value(); priority = eventHandler.getAnnotation(Priority.class).value();
@ -137,14 +137,6 @@ public class EventProcessor extends AbstractProcessor {
} }
} }
private TypeMirror getTypeMirror(Class<?> clazz) {
return getTypeElement(clazz).asType();
}
private TypeElement getTypeElement(Class<?> clazz) {
return processingEnv.getElementUtils().getTypeElement(clazz.getCanonicalName());
}
private void warning(Element e, String msg, Object... args) { private void warning(Element e, String msg, Object... args) {
processingEnv.getMessager().printMessage(Kind.WARNING, String.format(msg, args), e); processingEnv.getMessager().printMessage(Kind.WARNING, String.format(msg, args), e);
} }