/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000,2002,2003 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.util;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.util.attrs.ASMLocalVariableTypeTableAttribute;
import org.objectweb.asm.util.attrs.ASMAnnotationDefaultAttribute;
import org.objectweb.asm.util.attrs.ASMEnclosingMethodAttribute;
import org.objectweb.asm.util.attrs.ASMRuntimeInvisibleAnnotations;
import org.objectweb.asm.util.attrs.ASMRuntimeInvisibleParameterAnnotations;
import org.objectweb.asm.util.attrs.ASMRuntimeVisibleAnnotations;
import org.objectweb.asm.util.attrs.ASMRuntimeVisibleParameterAnnotations;
import org.objectweb.asm.util.attrs.ASMSignatureAttribute;
import org.objectweb.asm.util.attrs.ASMSourceDebugExtensionAttribute;
import org.objectweb.asm.util.attrs.ASMStackMapAttribute;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.List;
/**
* An abstract class visitor that prints the classes it visits.
*
* @author Eric Bruneton, Eugene Kuleshov
*/
public abstract class PrintClassVisitor implements ClassVisitor {
/**
* The text to be printed. Since the code of methods is not necessarily
* visited in sequential order, one method after the other, but can be
* interlaced (some instructions from method one, then some instructions from
* method two, then some instructions from method one again...), it is not
* possible to print the visited instructions directly to a sequential
* stream. A class is therefore printed in a two steps process: a string tree
* is constructed during the visit, and printed to a sequential stream at the
* end of the visit. This string tree is stored in this field, as a string
* list that can contain other string lists, which can themselves contain
* other string lists, and so on.
*/
protected final List text;
/**
* A buffer that can be used to create strings.
*/
protected final StringBuffer buf;
/**
* The print writer to be used to print the class.
*/
protected final PrintWriter pw;
/**
* Constructs a new {@link PrintClassVisitor PrintClassVisitor} object.
*
* @param pw the print writer to be used to print the class.
*/
protected PrintClassVisitor (final PrintWriter pw) {
this.text = new ArrayList();
this.buf = new StringBuffer();
this.pw = pw;
}
public void visitEnd () {
printList(text);
pw.flush();
}
/**
* Prints the given string tree to {@link #pw pw}.
*
* @param l a string tree, i.e., a string list that can contain other string
* lists, and so on recursively.
*/
private void printList (final List l) {
for (int i = 0; i < l.size(); ++i) {
Object o = l.get(i);
if (o instanceof List) {
printList((List)o);
} else {
pw.print(o.toString());
}
}
}
public static Attribute[] getDefaultAttributes () {
try {
return new Attribute[] {
new ASMAnnotationDefaultAttribute(),
new ASMRuntimeInvisibleAnnotations(),
new ASMRuntimeInvisibleParameterAnnotations(),
new ASMRuntimeVisibleAnnotations(),
new ASMRuntimeVisibleParameterAnnotations(),
new ASMStackMapAttribute(),
new ASMSourceDebugExtensionAttribute(),
new ASMSignatureAttribute(),
new ASMEnclosingMethodAttribute(),
new ASMLocalVariableTypeTableAttribute()
};
} catch (Exception e) {
return new Attribute[0];
}
}
}