| /* |
| * The Apache Software License, Version 1.1 |
| * |
| * Copyright (c) 2001-2002 The Apache Software Foundation. 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. The end-user documentation included with the redistribution, if |
| * any, must include the following acknowlegement: |
| * "This product includes software developed by the |
| * Apache Software Foundation (http://www.apache.org/)." |
| * Alternately, this acknowlegement may appear in the software itself, |
| * if and wherever such third-party acknowlegements normally appear. |
| * |
| * 4. The names "The Jakarta Project", "Ant", and "Apache Software |
| * Foundation" must not be used to endorse or promote products derived |
| * from this software without prior written permission. For written |
| * permission, please contact apache@apache.org. |
| * |
| * 5. Products derived from this software may not be called "Apache" |
| * nor may "Apache" appear in their names without prior written |
| * permission of the Apache Group. |
| * |
| * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 APACHE SOFTWARE FOUNDATION OR |
| * ITS 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. |
| * ==================================================================== |
| * |
| * This software consists of voluntary contributions made by many |
| * individuals on behalf of the Apache Software Foundation. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| */ |
| package org.apache.tools.ant.taskdefs.optional.sitraka.bytecode; |
| |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| |
| import org.apache.tools.ant.taskdefs.optional.depend.constantpool.ConstantPool; |
| import org.apache.tools.ant.taskdefs.optional.sitraka.bytecode.attributes.AttributeInfo; |
| |
| /** |
| * Method info structure. |
| * @todo give a more appropriate name to methods. |
| * |
| * @author <a href="sbailliez@imediation.com">Stephane Bailliez</a> |
| */ |
| public final class MethodInfo { |
| private int access_flags; |
| private int loc = -1; |
| private String name; |
| private String descriptor; |
| |
| public MethodInfo() { |
| } |
| |
| public void read(ConstantPool constantPool, DataInputStream dis) throws IOException { |
| access_flags = dis.readShort(); |
| |
| int name_index = dis.readShort(); |
| name = Utils.getUTF8Value(constantPool, name_index); |
| |
| int descriptor_index = dis.readShort(); |
| descriptor = Utils.getUTF8Value(constantPool, descriptor_index); |
| |
| int attributes_count = dis.readUnsignedShort(); |
| for (int i = 0; i < attributes_count; i++) { |
| int attr_id = dis.readShort(); |
| String attr_name = Utils.getUTF8Value(constantPool, attr_id); |
| int len = dis.readInt(); |
| if (AttributeInfo.CODE.equals(attr_name)) { |
| readCode(constantPool, dis); |
| } else { |
| dis.skipBytes(len); |
| } |
| } |
| |
| } |
| |
| protected void readCode(ConstantPool constantPool, DataInputStream dis) throws IOException { |
| // skip max_stack (short), max_local (short) |
| dis.skipBytes(2 * 2); |
| |
| // skip bytecode... |
| int bytecode_len = dis.readInt(); |
| dis.skip(bytecode_len); |
| |
| // skip exceptions... 1 exception = 4 short. |
| int exception_count = dis.readShort(); |
| dis.skipBytes(exception_count * 4 * 2); |
| |
| // read attributes... |
| int attributes_count = dis.readUnsignedShort(); |
| for (int i = 0; i < attributes_count; i++) { |
| int attr_id = dis.readShort(); |
| String attr_name = Utils.getUTF8Value(constantPool, attr_id); |
| int len = dis.readInt(); |
| if (AttributeInfo.LINE_NUMBER_TABLE.equals(attr_name)) { |
| // we're only interested in lines of code... |
| loc = dis.readShort(); |
| // skip the table which is 2*loc*short |
| dis.skip(loc * 2 * 2); |
| } else { |
| dis.skipBytes(len); |
| } |
| } |
| } |
| |
| public int getAccessFlags() { |
| return access_flags; |
| } |
| |
| public String getName() { |
| return name; |
| } |
| |
| public String getDescriptor() { |
| return descriptor; |
| } |
| |
| public String getFullSignature() { |
| return getReturnType() + " " + getShortSignature(); |
| } |
| |
| public String getShortSignature() { |
| StringBuffer buf = new StringBuffer(getName()); |
| buf.append("("); |
| String[] params = getParametersType(); |
| for (int i = 0; i < params.length; i++) { |
| buf.append(params[i]); |
| if (i != params.length - 1) { |
| buf.append(", "); |
| } |
| } |
| buf.append(")"); |
| return buf.toString(); |
| } |
| |
| public String getReturnType() { |
| return Utils.getMethodReturnType(getDescriptor()); |
| } |
| |
| public String[] getParametersType() { |
| return Utils.getMethodParams(getDescriptor()); |
| } |
| |
| public int getNumberOfLines() { |
| return loc; |
| } |
| |
| public String getAccess() { |
| return Utils.getMethodAccess(access_flags); |
| } |
| |
| public String toString() { |
| StringBuffer sb = new StringBuffer(); |
| sb.append("Method: ").append(getAccess()).append(" "); |
| sb.append(getFullSignature()); |
| return sb.toString(); |
| } |
| } |
| |
| |