asm4/test/perf/org/aspectj/apache/bcel/classfile/Signature.java - toolchain/jill - Git at Google

 package org.aspectj.apache.bcel.classfile;

 /* ====================================================================
  * The Apache Software License, Version 1.1
  *
  * Copyright (c) 2001 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 acknowledgment:
  *       "This product includes software developed by the
  *        Apache Software Foundation (http://www.apache.org/)."
  *    Alternately, this acknowledgment may appear in the software itself,
  *    if and wherever such third-party acknowledgments normally appear.
  *
  * 4. The names "Apache" and "Apache Software Foundation" and
  *    "Apache BCEL" 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",
  *    "Apache BCEL", nor may "Apache" appear in their name, without
  *    prior written permission of the Apache Software Foundation.
  *
  * 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/>.
  */

 import java.io.ByteArrayInputStream;
 import java.io.DataInputStream;
 import java.io.DataOutputStream;
 import java.io.IOException;

 import org.apache.bcel.Constants;

 /**
  * This class is derived from <em>Attribute</em> and represents a reference to
  * a <href="http://wwwipd.ira.uka.de/~pizza/gj/">GJ</a> attribute.
  *
  * @version $Id: Signature.java,v 1.2 2006-07-05 15:22:56 ebruneton Exp $
  * @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
  * @see Attribute
  */
 public final class Signature extends Attribute {
     private int signature_index;

     /**
      * Initialize from another object. Note that both objects use the same
      * references (shallow copy). Use clone() for a physical copy.
      *
      * @param c
      */
     public Signature(final Signature c) {
         this(c.getNameIndex(),
                 c.getLength(),
                 c.getSignatureIndex(),
                 c.getConstantPool());
     }

     /**
      * Construct object from file stream.
      *
      * @param name_index Index in constant pool to CONSTANT_Utf8
      * @param length Content length in bytes
      * @param file Input stream
      * @param constant_pool Array of constants
      * @throws IOException
      */
     Signature(
         final int name_index,
         final int length,
         final DataInputStream file,
         final ConstantPool constant_pool) throws IOException
     {
         this(name_index, length, file.readUnsignedShort(), constant_pool);
     }

     /**
      * @param name_index Index in constant pool to CONSTANT_Utf8
      * @param length Content length in bytes
      * @param constant_pool Array of constants
      * @param signature_index Index in constant pool to CONSTANT_Utf8
      */
     public Signature(
         final int name_index,
         final int length,
         final int signature_index,
         final ConstantPool constant_pool)
     {
         super(Constants.ATTR_SIGNATURE, name_index, length, constant_pool);
         this.signature_index = signature_index;
     }

     /**
      * Called by objects that are traversing the nodes of the tree implicitely
      * defined by the contents of a Java class. I.e., the hierarchy of methods,
      * fields, attributes, etc. spawns a tree of objects.
      *
      * @param v Visitor object
      */
     @Override
     public void accept(final Visitor v) {
         // System.err.println("Visiting non-standard Signature object");
         // v.visitSignature(this);
     }

     /**
      * Dump source file attribute to file stream in binary format.
      *
      * @param file Output file stream
      * @throws IOException
      */
     @Override
     public final void dump(final DataOutputStream file) throws IOException {
         super.dump(file);
         file.writeShort(signature_index);
     }

     /**
      * @return Index in constant pool of source file name.
      */
     public final int getSignatureIndex() {
         return signature_index;
     }

     /**
      * @param signature_index
      */
     public final void setSignatureIndex(final int signature_index) {
         this.signature_index = signature_index;
     }

     /**
      * @return GJ signature.
      */
     public final String getSignature() {
         ConstantUtf8 c = (ConstantUtf8) constant_pool.getConstant(signature_index,
                 Constants.CONSTANT_Utf8);
         return c.getBytes();
     }

     /**
      * Extends ByteArrayInputStream to make 'unreading' chars possible.
      */
     private static final class MyByteArrayInputStream extends
             ByteArrayInputStream
     {
         MyByteArrayInputStream(final String data) {
             super(data.getBytes());
         }

         final int mark() {
             return pos;
         }

         final String getData() {
             return new String(buf);
         }

         final void reset(final int p) {
             pos = p;
         }

         final void unread() {
             if (pos > 0) {
                 pos--;
             }
         }
     }

     private static boolean identStart(final int ch) {
         return ch == 'T' || ch == 'L';
     }

     // private static boolean identPart(int ch) {
     // return ch == '/' || ch == ';';
     // }

     private static final void matchIdent(
         final MyByteArrayInputStream in,
         final StringBuffer buf)
     {
         int ch;

         if ((ch = in.read()) == -1) {
             throw new RuntimeException("Illegal signature: " + in.getData()
                     + " no ident, reaching EOF");
         }

         // System.out.println("return from ident:" + (char)ch);

         if (!identStart(ch)) {
             StringBuffer buf2 = new StringBuffer();

             int count = 1;
             while (Character.isJavaIdentifierPart((char) ch)) {
                 buf2.append((char) ch);
                 count++;
                 ch = in.read();
             }

             if (ch == ':') { // Ok, formal parameter
                 in.skip("Ljava/lang/Object".length());
                 buf.append(buf2);

                 ch = in.read();
                 in.unread();
                 // System.out.println("so far:" + buf2 + ":next:" +(char)ch);
             } else {
                 for (int i = 0; i < count; i++) {
                     in.unread();
                 }
             }

             return;
         }

         StringBuffer buf2 = new StringBuffer();
         ch = in.read();

         do {
             buf2.append((char) ch);
             ch = in.read();
             // System.out.println("within ident:"+ (char)ch);

         } while (ch != -1
                 && (Character.isJavaIdentifierPart((char) ch) || ch == '/'));

         buf.append(buf2.toString().replace('/', '.'));

         // System.out.println("regular return ident:"+ (char)ch + ":" + buf2);

         if (ch != -1) {
             in.unread();
         }
     }

     private static final void matchGJIdent(
         final MyByteArrayInputStream in,
         final StringBuffer buf)
     {
         int ch;

         matchIdent(in, buf);

         ch = in.read();
         if (ch == '<' || ch == '(') { // Parameterized or method
             // System.out.println("Enter <");
             buf.append((char) ch);
             matchGJIdent(in, buf);

             while ((ch = in.read()) != '>' && ch != ')') { // List of
                 // parameters
                 if (ch == -1) {
                     throw new RuntimeException("Illegal signature: "
                             + in.getData() + " reaching EOF");
                 }

                 // System.out.println("Still no >");
                 buf.append(", ");
                 in.unread();
                 matchGJIdent(in, buf); // Recursive call
             }

             // System.out.println("Exit >");

             buf.append((char) ch);
         } else {
             in.unread();
         }

         ch = in.read();
         if (identStart(ch)) {
             in.unread();
             matchGJIdent(in, buf);
         } else if (ch == ')') {
             in.unread();
             return;
         } else if (ch != ';') {
             throw new RuntimeException("Illegal signature: " + in.getData()
                     + " read " + (char) ch);
         }
     }

     public static String translate(final String s) {
         // System.out.println("Sig:" + s);
         StringBuffer buf = new StringBuffer();

         matchGJIdent(new MyByteArrayInputStream(s), buf);

         return buf.toString();
     }

     public static final boolean isFormalParameterList(final String s) {
         return s.startsWith("<") && s.indexOf(':') > 0;
     }

     public static final boolean isActualParameterList(final String s) {
         return s.startsWith("L") && s.endsWith(">;");
     }

     /**
      * @return String representation
      */
     @Override
     public final String toString() {
         String s = getSignature();

         return "Signature(" + s + ")";
     }

     /**
      * @param constant_pool
      * @return deep copy of this attribute
      */
     @Override
     public Attribute copy(final ConstantPool constant_pool) {
         return (Signature) clone();
     }
 }
	package org.aspectj.apache.bcel.classfile;

	/* ====================================================================
	* The Apache Software License, Version 1.1
	*
	* Copyright (c) 2001 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 acknowledgment:
	* "This product includes software developed by the
	* Apache Software Foundation (http://www.apache.org/)."
	* Alternately, this acknowledgment may appear in the software itself,
	* if and wherever such third-party acknowledgments normally appear.
	*
	* 4. The names "Apache" and "Apache Software Foundation" and
	* "Apache BCEL" 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",
	* "Apache BCEL", nor may "Apache" appear in their name, without
	* prior written permission of the Apache Software Foundation.
	*
	* 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/>.
	*/

	import java.io.ByteArrayInputStream;
	import java.io.DataInputStream;
	import java.io.DataOutputStream;
	import java.io.IOException;

	import org.apache.bcel.Constants;

	/**
	* This class is derived from <em>Attribute</em> and represents a reference to
	* a <href="http://wwwipd.ira.uka.de/~pizza/gj/">GJ</a> attribute.
	*
	* @version $Id: Signature.java,v 1.2 2006-07-05 15:22:56 ebruneton Exp $
	* @author <A HREF="mailto:markus.dahm@berlin.de">M. Dahm</A>
	* @see Attribute
	*/
	public final class Signature extends Attribute {
	private int signature_index;

	/**
	* Initialize from another object. Note that both objects use the same
	* references (shallow copy). Use clone() for a physical copy.
	*
	* @param c
	*/
	public Signature(final Signature c) {
	this(c.getNameIndex(),
	c.getLength(),
	c.getSignatureIndex(),
	c.getConstantPool());
	}

	/**
	* Construct object from file stream.
	*
	* @param name_index Index in constant pool to CONSTANT_Utf8
	* @param length Content length in bytes
	* @param file Input stream
	* @param constant_pool Array of constants
	* @throws IOException
	*/
	Signature(
	final int name_index,
	final int length,
	final DataInputStream file,
	final ConstantPool constant_pool) throws IOException
	{
	this(name_index, length, file.readUnsignedShort(), constant_pool);
	}

	/**
	* @param name_index Index in constant pool to CONSTANT_Utf8
	* @param length Content length in bytes
	* @param constant_pool Array of constants
	* @param signature_index Index in constant pool to CONSTANT_Utf8
	*/
	public Signature(
	final int name_index,
	final int length,
	final int signature_index,
	final ConstantPool constant_pool)
	{
	super(Constants.ATTR_SIGNATURE, name_index, length, constant_pool);
	this.signature_index = signature_index;
	}

	/**
	* Called by objects that are traversing the nodes of the tree implicitely
	* defined by the contents of a Java class. I.e., the hierarchy of methods,
	* fields, attributes, etc. spawns a tree of objects.
	*
	* @param v Visitor object
	*/
	@Override
	public void accept(final Visitor v) {
	// System.err.println("Visiting non-standard Signature object");
	// v.visitSignature(this);
	}

	/**
	* Dump source file attribute to file stream in binary format.
	*
	* @param file Output file stream
	* @throws IOException
	*/
	@Override
	public final void dump(final DataOutputStream file) throws IOException {
	super.dump(file);
	file.writeShort(signature_index);
	}

	/**
	* @return Index in constant pool of source file name.
	*/
	public final int getSignatureIndex() {
	return signature_index;
	}

	/**
	* @param signature_index
	*/
	public final void setSignatureIndex(final int signature_index) {
	this.signature_index = signature_index;
	}

	/**
	* @return GJ signature.
	*/
	public final String getSignature() {
	ConstantUtf8 c = (ConstantUtf8) constant_pool.getConstant(signature_index,
	Constants.CONSTANT_Utf8);
	return c.getBytes();
	}

	/**
	* Extends ByteArrayInputStream to make 'unreading' chars possible.
	*/
	private static final class MyByteArrayInputStream extends
	ByteArrayInputStream
	{
	MyByteArrayInputStream(final String data) {
	super(data.getBytes());
	}

	final int mark() {
	return pos;
	}

	final String getData() {
	return new String(buf);
	}

	final void reset(final int p) {
	pos = p;
	}

	final void unread() {
	if (pos > 0) {
	pos--;
	}
	}
	}

	private static boolean identStart(final int ch) {
	return ch == 'T' \|\| ch == 'L';
	}

	// private static boolean identPart(int ch) {
	// return ch == '/' \|\| ch == ';';
	// }

	private static final void matchIdent(
	final MyByteArrayInputStream in,
	final StringBuffer buf)
	{
	int ch;

	if ((ch = in.read()) == -1) {
	throw new RuntimeException("Illegal signature: " + in.getData()
	+ " no ident, reaching EOF");
	}

	// System.out.println("return from ident:" + (char)ch);

	if (!identStart(ch)) {
	StringBuffer buf2 = new StringBuffer();

	int count = 1;
	while (Character.isJavaIdentifierPart((char) ch)) {
	buf2.append((char) ch);
	count++;
	ch = in.read();
	}

	if (ch == ':') { // Ok, formal parameter
	in.skip("Ljava/lang/Object".length());
	buf.append(buf2);

	ch = in.read();
	in.unread();
	// System.out.println("so far:" + buf2 + ":next:" +(char)ch);
	} else {
	for (int i = 0; i < count; i++) {
	in.unread();
	}
	}

	return;
	}

	StringBuffer buf2 = new StringBuffer();
	ch = in.read();

	do {
	buf2.append((char) ch);
	ch = in.read();
	// System.out.println("within ident:"+ (char)ch);

	} while (ch != -1
	&& (Character.isJavaIdentifierPart((char) ch) \|\| ch == '/'));

	buf.append(buf2.toString().replace('/', '.'));

	// System.out.println("regular return ident:"+ (char)ch + ":" + buf2);

	if (ch != -1) {
	in.unread();
	}
	}

	private static final void matchGJIdent(
	final MyByteArrayInputStream in,
	final StringBuffer buf)
	{
	int ch;

	matchIdent(in, buf);

	ch = in.read();
	if (ch == '<' \|\| ch == '(') { // Parameterized or method
	// System.out.println("Enter <");
	buf.append((char) ch);
	matchGJIdent(in, buf);

	while ((ch = in.read()) != '>' && ch != ')') { // List of
	// parameters
	if (ch == -1) {
	throw new RuntimeException("Illegal signature: "
	+ in.getData() + " reaching EOF");
	}

	// System.out.println("Still no >");
	buf.append(", ");
	in.unread();
	matchGJIdent(in, buf); // Recursive call
	}

	// System.out.println("Exit >");

	buf.append((char) ch);
	} else {
	in.unread();
	}

	ch = in.read();
	if (identStart(ch)) {
	in.unread();
	matchGJIdent(in, buf);
	} else if (ch == ')') {
	in.unread();
	return;
	} else if (ch != ';') {
	throw new RuntimeException("Illegal signature: " + in.getData()
	+ " read " + (char) ch);
	}
	}

	public static String translate(final String s) {
	// System.out.println("Sig:" + s);
	StringBuffer buf = new StringBuffer();

	matchGJIdent(new MyByteArrayInputStream(s), buf);

	return buf.toString();
	}

	public static final boolean isFormalParameterList(final String s) {
	return s.startsWith("<") && s.indexOf(':') > 0;
	}

	public static final boolean isActualParameterList(final String s) {
	return s.startsWith("L") && s.endsWith(">;");
	}

	/**
	* @return String representation
	*/
	@Override
	public final String toString() {
	String s = getSignature();

	return "Signature(" + s + ")";
	}

	/**
	* @param constant_pool
	* @return deep copy of this attribute
	*/
	@Override
	public Attribute copy(final ConstantPool constant_pool) {
	return (Signature) clone();
	}
	}