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/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2007 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.commons;
import java.io.FileInputStream;
import java.io.PrintWriter;
import org.objectweb.asm.ClassReader;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.util.ASMifierClassVisitor;
/**
* Sub class of the ASMifier class visitor used to test GeneratorAdapter.
*
* @author Eric Bruneton
*/
public class GASMifierClassVisitor extends ASMifierClassVisitor {
/**
* Prints the ASM source code to generate the given class to the standard
* output. <p> Usage: ASMifierClassVisitor [-debug] <fully qualified
* class name or class file name>
*
* @param args the command line arguments.
*
* @throws Exception if the class cannot be found, or if an IO exception
* occurs.
*/
public static void main(final String[] args) throws Exception {
int i = 0;
int flags = ClassReader.SKIP_DEBUG;
boolean ok = true;
if (args.length < 1 || args.length > 2) {
ok = false;
}
if (ok && args[0].equals("-debug")) {
i = 1;
flags = 0;
if (args.length != 2) {
ok = false;
}
}
if (!ok) {
System.err.println("Prints the ASM code to generate the given class.");
System.err.println("Usage: GASMifierClassVisitor [-debug] "
+ "<fully qualified class name or class file name>");
System.exit(-1);
}
ClassReader cr;
if (args[i].endsWith(".class")) {
cr = new ClassReader(new FileInputStream(args[i]));
} else {
cr = new ClassReader(args[i]);
}
cr.accept(new GASMifierClassVisitor(new PrintWriter(System.out)),
getDefaultAttributes(),
ClassReader.EXPAND_FRAMES | flags);
}
public GASMifierClassVisitor(final PrintWriter pw) {
super(pw);
}
public void visit(
final int version,
final int access,
final String name,
final String signature,
final String superName,
final String[] interfaces)
{
super.visit(version, access, name, signature, superName, interfaces);
int n;
if (name.lastIndexOf('/') != -1) {
n = 1;
} else {
n = 0;
}
text.set(n + 5,
"ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);\n");
text.set(n + 7, "GeneratorAdapter mg;\n");
text.add(n + 1, "import org.objectweb.asm.commons.*;\n");
}
public MethodVisitor visitMethod(
final int access,
final String name,
final String desc,
final String signature,
final String[] exceptions)
{
buf.setLength(0);
buf.append("{\n");
buf.append("mg = new GeneratorAdapter(");
buf.append(access);
buf.append(", ");
buf.append(GASMifierMethodVisitor.getMethod(name, desc));
buf.append(", ");
if (signature == null) {
buf.append("null");
} else {
buf.append('"').append(signature).append('"');
}
buf.append(", ");
if (exceptions != null && exceptions.length > 0) {
buf.append("new Type[] {");
for (int i = 0; i < exceptions.length; ++i) {
buf.append(i == 0 ? " " : ", ");
buf.append(GASMifierMethodVisitor.getType(exceptions[i]));
}
buf.append(" }");
} else {
buf.append("null");
}
buf.append(", cw);\n");
text.add(buf.toString());
GASMifierMethodVisitor acv = new GASMifierMethodVisitor(access, desc);
text.add(acv.getText());
text.add("}\n");
return new LocalVariablesSorter(access, desc, acv);
}
}
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