[core] Allow null scope.

Signed-off-by: Stéphane Galland <galland@arakhne.org>

eclipse-sarl/plugins/io.sarl.core/src/io/sarl/core/bic.sarl

@@ -474,7 +474,7 @@ capacity DefaultContextInteractions {
 	 * ...
 	 * const mySpawnArgs = ...
 	 * const myAgentAddr = MyAgent.spawn(mySpawnArgs)
-	 * defaultSpace.emit(new StartWorkingEvent, AddressScope::scope(myAgentAddr)
+	 * defaultSpace.emit(new StartWorkingEvent, AddressScope::scope(myAgentAddr))
 	 * </code> 
 	 * <p>The equivalent using receive could be written:
 	 * <code>

eclipse-sarl/plugins/io.sarl.lang.core/src/io/sarl/lang/core/EventSpace.java

@@ -23,6 +23,7 @@
 
 import java.util.UUID;
 
+import org.eclipse.xtext.xbase.lib.Inline;
 import org.eclipse.xtext.xbase.lib.Pure;
 
 /**
@@ -58,6 +59,7 @@ public interface EventSpace extends Space {
 	 *
 	 * @param event - the event to emit in the space.
 	 */
+	@Inline(value = "emit($1, null)")
 	void emit(Event event);
 
 }

sre/io.janusproject/io.janusproject.plugin/src/io/janusproject/kernel/space/AbstractEventSpace.java

@@ -122,10 +122,10 @@ public final void emit(Event event, Scope<Address> scope) {
 		assert event != null;
 		assert event.getSource() != null : "Every event must have a source"; //$NON-NLS-1$
 		assert this.getSpaceID().equals(event.getSource().getSpaceId()) : "The source address must belong to this space"; //$NON-NLS-1$
-
 		try {
-			this.network.publish(scope, event);
-			doEmit(event, scope);
+			final Scope<Address> scopeInstance = (scope == null) ? Scopes.<Address>allParticipants() : scope;
+			this.network.publish(scopeInstance, event);
+			doEmit(event, scopeInstance);
 		} catch (Throwable e) {
 			this.logger.error(Messages.AbstractEventSpace_0, event, scope, e);
 		}
@@ -141,7 +141,7 @@ public final void emit(Event event, Scope<Address> scope) {
 	 * @see #emit(Event, Scope)
 	 */
 	public final void emit(Event event) {
-		emit(event, Scopes.<Address>allParticipants());
+		emit(event, null);
 	}
 
 	/**
@@ -153,6 +153,8 @@ public final void emit(Event event) {
 	 * @param scope - description of the scope of the event, i.e. the receivers of the event.
 	 */
 	protected void doEmit(Event event, Scope<? super Address> scope) {
+		assert scope != null;
+		assert event != null;
 		synchronized (this.participants) {
 			for (final EventListener agent : this.participants.getListeners()) {
 				if (scope.matches(getAddress(agent))) {