| /* Copyright (C) 2003 Vladimir Roubtsov. All rights reserved. |
| * |
| * This program and the accompanying materials are made available under |
| * the terms of the Common Public License v1.0 which accompanies this distribution, |
| * and is available at http://www.eclipse.org/legal/cpl-v10.html |
| * |
| * $Id: LineNumber_info.java,v 1.1.1.1 2004/05/09 16:57:48 vlad_r Exp $ |
| */ |
| package com.vladium.jcd.cls.attribute; |
| |
| import java.io.IOException; |
| |
| import com.vladium.jcd.compiler.IClassFormatOutput; |
| import com.vladium.jcd.lib.UDataInputStream; |
| import com.vladium.jcd.lib.UDataOutputStream; |
| |
| // ---------------------------------------------------------------------------- |
| /** |
| * This class represents a line_number_table entry contained by |
| * {@link LineNumberTableAttribute_info} attribute. Each entry contains the |
| * following items: |
| * <PRE> |
| * start_pc |
| * </PRE> |
| * The value of the start_pc item must indicate the index into the code array |
| * at which the code for a new line in the original source file begins. The |
| * value of start_pc must be less than the value of the code_length item of |
| * the {@link CodeAttribute_info} attribute of which this LineNumberTable |
| * is an attribute.<P> |
| * <PRE> |
| * line_number |
| * </PRE> |
| * The value of the line_number item must give the corresponding line number |
| * in the original source file. |
| * |
| * @author Vlad Roubtsov, (C) 2003 |
| */ |
| public |
| final class LineNumber_info implements Cloneable, IClassFormatOutput |
| { |
| // public: ................................................................ |
| |
| public int m_start_pc, m_line_number; |
| |
| |
| public LineNumber_info (final int start_pc, final int line_number) |
| { |
| m_start_pc = start_pc; |
| m_line_number = line_number; |
| } |
| |
| public String toString () |
| { |
| return "line_number_info: [start_pc = " + m_start_pc + ", line_number = " + m_line_number + "]"; |
| } |
| |
| // Cloneable: |
| |
| /** |
| * Performs a deep copy. |
| */ |
| public Object clone () |
| { |
| try |
| { |
| return super.clone (); |
| } |
| catch (CloneNotSupportedException e) |
| { |
| throw new InternalError (e.toString ()); |
| } |
| } |
| |
| // IClassFormatOutput: |
| |
| public void writeInClassFormat (final UDataOutputStream out) throws IOException |
| { |
| out.writeU2 (m_start_pc); |
| out.writeU2 (m_line_number); |
| } |
| |
| // protected: ............................................................. |
| |
| // package: ............................................................... |
| |
| |
| LineNumber_info (final UDataInputStream bytes) throws IOException |
| { |
| m_start_pc = bytes.readU2 (); |
| m_line_number = bytes.readU2 (); |
| } |
| |
| // private: ............................................................... |
| |
| } // end of class |
| // ---------------------------------------------------------------------------- |