ASMSupport教程4.10 instanceof操作符生成

import java.io.PrintStream; import java.util.ArrayList; import java.util.HashMap; import java.util.List;

public class InstanceofOperatorGenerateExample { public static void main(String[] args) { System.out.println("String" instanceof CharSequence); System.out.println(new ArrayList() instanceof List); System.out.println(new HashMap() instanceof List); } }</pre><!-- Code inserted with Steve Dunn's Windows Live Writer Code Formatter Plugin. http://dunnhq.com --></div>

import java.util.ArrayList; import java.util.HashMap; import java.util.List;

import jw.asmsupport.block.method.common.StaticMethodBody; import jw.asmsupport.clazz.AClass; import jw.asmsupport.clazz.AClassFactory; import jw.asmsupport.creator.ClassCreator; import jw.asmsupport.definition.value.Value; import jw.asmsupport.definition.variable.LocalVariable;

import org.objectweb.asm.Opcodes;

import example.AbstractExample;

public class InstanceofOperatorGenerate1 extends AbstractExample {

1public static void main(String[] args) {
2    
3    ClassCreator creator = new ClassCreator(Opcodes.V1_5, Opcodes.ACC_PUBLIC , "generated.operators.InstanceofOperatorGenerateExample", null, null);
4	
5	/*
6	 * 生成一个main方法
7	 */
8	creator.createStaticMethod("main", new AClass[]{AClassFactory.getProductClass(String[].class)}, new String[]{"args"}, null, null,
9			Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC, new StaticMethodBody(){
10
11		@Override
12		public void generateBody(LocalVariable... argus) {
13			invoke(systemOut, "println", instanceOf(Value.value("String"), AClassFactory.getProductClass(CharSequence.class)));
14			invoke(systemOut, "println", instanceOf(invokeConstructor(AClassFactory.getProductClass(ArrayList.class)),
15					AClassFactory.getProductClass(List.class)));
16			invoke(systemOut, "println", instanceOf(invokeConstructor(AClassFactory.getProductClass(HashMap.class)),
17					AClassFactory.getProductClass(List.class)));
18			runReturn();
19		}
20    });
21	generate(creator);
22}

}</pre><!-- Code inserted with Steve Dunn's Windows Live Writer Code Formatter Plugin. http://dunnhq.com --></div>