/***
* ASM tests
* Copyright (c) 2002-2005 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.ow2.asm.test.cases;
import java.io.IOException;
import org.ow2.asm.ClassWriter;
import org.ow2.asm.FieldVisitor;
import org.ow2.asm.Label;
import org.ow2.asm.MethodVisitor;
import org.ow2.asm.attrs.CodeComment;
import org.ow2.asm.attrs.Comment;
/**
* Generates a class with non standard attributes. Covers class, field, method
* and code attributes. Also covers the V1_3 class version and the SYNTHETIC
* access flag for classes.
*
* @author Eric Bruneton
*/
public class Attribute extends Generator {
@Override
public void generate(final String dir) throws IOException {
generate(dir, "pkg/Attribute.class", dump());
}
public byte[] dump() {
ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
FieldVisitor fv;
MethodVisitor mv;
cw.visit(V1_3,
ACC_PUBLIC + ACC_SYNTHETIC,
"pkg/Attribute",
null,
"java/lang/Object",
null);
cw.visitAttribute(new Comment());
fv = cw.visitField(ACC_PUBLIC, "f", "I", null, null);
fv.visitAttribute(new Comment());
fv.visitEnd();
mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
mv.visitAttribute(new Comment());
mv.visitCode();
mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V");
/*
* the following instructions are designed so that this method will be
* resized by the method resizing test, in order to cover the code that
* recomputes the code attribute labels in the resizeInstructions method
* (see MethodWriter).
*/
Label l0 = new Label();
mv.visitInsn(ICONST_0);
mv.visitJumpInsn(IFEQ, l0);
// many NOPs will be introduced here by the method resizing test
mv.visitJumpInsn(GOTO, l0);
mv.visitLabel(l0);
mv.visitInsn(RETURN);
mv.visitMaxs(0, 0);
mv.visitAttribute(new CodeComment());
mv.visitEnd();
cw.visitEnd();
return cw.toByteArray();
}
}