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- /*
- * Javassist, a Java-bytecode translator toolkit.
- * Copyright (C) 1999-2006 Shigeru Chiba. All Rights Reserved.
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. Alternatively, the contents of this file may be used under
- * the terms of the GNU Lesser General Public License Version 2.1 or later.
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- */
-
- package javassist.bytecode;
-
- import java.io.PrintWriter;
- import javassist.Modifier;
- import java.util.List;
-
- /**
- * A utility class for priting the contents of a class file.
- * It prints a constant pool table, fields, and methods in a
- * human readable representation.
- */
- public class ClassFileWriter {
- /**
- * Prints the contents of a class file to the standard output stream.
- */
- public static void print(ClassFile cf) {
- print(cf, new PrintWriter(System.out, true));
- }
-
- /**
- * Prints the contents of a class file.
- */
- public static void print(ClassFile cf, PrintWriter out) {
- List list;
- int n;
-
- /* 0x0020 (SYNCHRONIZED) means ACC_SUPER if the modifiers
- * are of a class.
- */
- int mod
- = AccessFlag.toModifier(cf.getAccessFlags()
- & ~AccessFlag.SYNCHRONIZED);
- out.println("major: " + cf.major + ", minor: " + cf.minor
- + " modifiers: " + Integer.toHexString(cf.getAccessFlags()));
- out.println(Modifier.toString(mod) + " class "
- + cf.getName() + " extends " + cf.getSuperclass());
-
- String[] infs = cf.getInterfaces();
- if (infs != null && infs.length > 0) {
- out.print(" implements ");
- out.print(infs[0]);
- for (int i = 1; i < infs.length; ++i)
- out.print(", " + infs[i]);
-
- out.println();
- }
-
- out.println();
- list = cf.getFields();
- n = list.size();
- for (int i = 0; i < n; ++i) {
- FieldInfo finfo = (FieldInfo)list.get(i);
- int acc = finfo.getAccessFlags();
- out.println(Modifier.toString(AccessFlag.toModifier(acc))
- + " " + finfo.getName() + "\t"
- + finfo.getDescriptor());
- printAttributes(finfo.getAttributes(), out, 'f');
- }
-
- out.println();
- list = cf.getMethods();
- n = list.size();
- for (int i = 0; i < n; ++i) {
- MethodInfo minfo = (MethodInfo)list.get(i);
- int acc = minfo.getAccessFlags();
- out.println(Modifier.toString(AccessFlag.toModifier(acc))
- + " " + minfo.getName() + "\t"
- + minfo.getDescriptor());
- printAttributes(minfo.getAttributes(), out, 'm');
- out.println();
- }
-
- out.println();
- printAttributes(cf.getAttributes(), out, 'c');
- }
-
- static void printAttributes(List list, PrintWriter out, char kind) {
- if (list == null)
- return;
-
- int n = list.size();
- for (int i = 0; i < n; ++i) {
- AttributeInfo ai = (AttributeInfo)list.get(i);
- if (ai instanceof CodeAttribute) {
- CodeAttribute ca = (CodeAttribute)ai;
- out.println("attribute: " + ai.getName() + ": "
- + ai.getClass().getName());
- out.println("max stack " + ca.getMaxStack()
- + ", max locals " + ca.getMaxLocals()
- + ", " + ca.getExceptionTable().size()
- + " catch blocks");
- out.println("<code attribute begin>");
- printAttributes(ca.getAttributes(), out, kind);
- out.println("<code attribute end>");
- }
- else if (ai instanceof StackMapTable) {
- out.println("<stack map table begin>");
- StackMapTable.Printer.print((StackMapTable)ai, out);
- out.println("<stack map table end>");
- }
- else if (ai instanceof SignatureAttribute) {
- SignatureAttribute sa = (SignatureAttribute)ai;
- String sig = sa.getSignature();
- out.println("signature: " + sig);
- try {
- String s;
- if (kind == 'c')
- s = SignatureAttribute.toClassSignature(sig).toString();
- else if (kind == 'm')
- s = SignatureAttribute.toMethodSignature(sig).toString();
- else
- s = SignatureAttribute.toFieldSignature(sig).toString();
-
- out.println(" " + s);
- }
- catch (BadBytecode e) {
- out.println(" syntax error");
- }
- }
- else
- out.println("attribute: " + ai.getName()
- + " (" + ai.get().length + " byte): "
- + ai.getClass().getName());
- }
- }
- }
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