com.bugvm.objc.Selector Maven / Gradle / Ivy
/*
* Copyright (C) 2012 RoboVM AB
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.bugvm.objc;
import java.util.HashMap;
import java.util.Map;
import com.bugvm.rt.bro.NativeObject;
import com.bugvm.rt.bro.ptr.BytePtr;
/**
* Represents an Objective-C selector.
*/
public final class Selector extends NativeObject {
private static final Map selectors = new HashMap();
private Selector() {
}
public String getName() {
return ObjCRuntime.sel_getName(this).toStringAsciiZ();
}
@Override
public String toString() {
return getName();
}
public static Selector register(String name) {
if (name == null) {
throw new NullPointerException("name");
}
synchronized (selectors) {
Selector sel = selectors.get(name);
if (sel == null) {
sel = ObjCRuntime.sel_registerName(BytePtr.toBytePtrAsciiZ(name));
if (sel == null) {
// sel_registerName should never return nil
throw new IllegalStateException("Objective-C failed to register selector '" + name + "'");
}
selectors.put(name, sel);
}
return sel;
}
}
}