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// ASM: a very small and fast Java bytecode manipulation framework
// Copyright (c) 2000-2011 INRIA, France Telecom
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
// 1. Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// 2. Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// 3. Neither the name of the copyright holders nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
// THE POSSIBILITY OF SUCH DAMAGE.
package org.objectweb.asm.benchmarks;
import org.aspectj.apache.bcel.Constants;
import org.aspectj.apache.bcel.classfile.ConstantPool;
import org.aspectj.apache.bcel.generic.ArrayType;
import org.aspectj.apache.bcel.generic.ClassGen;
import org.aspectj.apache.bcel.generic.InstructionFactory;
import org.aspectj.apache.bcel.generic.InstructionList;
import org.aspectj.apache.bcel.generic.MethodGen;
import org.aspectj.apache.bcel.generic.Type;
/**
* A "Hello World!" class generator using the AspectJ BCEL library.
*
* @author Eric Bruneton
*/
public class AspectjBcelGenerator extends Generator {
private static final Type PRINT_STREAM_TYPE = Type.getType("Ljava/io/PrintStream;");
@Override
public byte[] generateClass() {
ClassGen classGen =
new ClassGen(
"HelloWorld", "java/lang/Object", "HelloWorld.java", Constants.ACC_PUBLIC, null);
classGen.addEmptyConstructor(Constants.ACC_PUBLIC);
ConstantPool constantPoolGen = classGen.getConstantPool();
InstructionList insnList = new InstructionList();
InstructionFactory insnFactory = new InstructionFactory(classGen);
MethodGen methodGen =
new MethodGen(
Constants.ACC_STATIC | Constants.ACC_PUBLIC,
Type.VOID,
new Type[] {new ArrayType(Type.STRING, 1)},
null,
"main",
"HelloWorld",
insnList,
constantPoolGen);
insnList.append(insnFactory.createGetStatic("java/lang/System", "out", PRINT_STREAM_TYPE));
insnList.append(insnFactory.createConstant("Hello world!"));
insnList.append(
insnFactory.createInvoke(
"java.io.PrintStream",
"println",
Type.VOID,
new Type[] {Type.STRING},
Constants.INVOKESPECIAL));
methodGen.setMaxStack();
classGen.addMethod(methodGen.getMethod());
return classGen.getJavaClass().getBytes();
}
}
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