/***
* ASM XML Adapter
* Copyright (c) 2000,2002,2003 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 oracle.toplink.libraries.asm.xml;
import java.util.HashMap;
import java.util.Map;
import oracle.toplink.libraries.asm.Attribute;
import oracle.toplink.libraries.asm.CodeVisitor;
import oracle.toplink.libraries.asm.Constants;
import oracle.toplink.libraries.asm.Label;
import oracle.toplink.libraries.asm.Type;
import oracle.toplink.libraries.asm.util.PrintCodeVisitor;
import org.xml.sax.Attributes;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
/**
* A {@link oracle.toplink.libraries.asm.CodeVisitor CodeVisitor} that generates SAX 2.0
* events from the visited code.
*
* @see oracle.toplink.libraries.asm.xml.SAXClassAdapter
* @see oracle.toplink.libraries.asm.xml.Processor
*
* @author Eugene Kuleshov
*/
public final class SAXCodeAdapter implements CodeVisitor {
private ContentHandler h;
private Map labelNames;
/**
* Constructs a new {@link SAXCodeAdapter SAXCodeAdapter} object.
*
* @param h content handler that will be used to send SAX 2.0 events.
*/
public SAXCodeAdapter( ContentHandler h) {
this.h = h;
labelNames = new HashMap();
}
public final void visitInsn( int opcode) {
addElement( PrintCodeVisitor.OPCODES[ opcode], new AttributesImpl());
}
public final void visitIntInsn( int opcode, int operand) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "value", "value", "", Integer.toString( operand));
addElement( PrintCodeVisitor.OPCODES[ opcode], attrs);
}
public final void visitVarInsn( int opcode, int var) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "var", "var", "", Integer.toString( var));
addElement( PrintCodeVisitor.OPCODES[ opcode], attrs);
}
public final void visitTypeInsn( int opcode, String desc) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "desc", "desc", "", desc);
addElement( PrintCodeVisitor.OPCODES[ opcode], attrs);
}
public final void visitFieldInsn( int opcode, String owner, String name, String desc) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "owner", "owner", "", owner);
attrs.addAttribute( "", "name", "name", "", name);
attrs.addAttribute( "", "desc", "desc", "", desc);
addElement( PrintCodeVisitor.OPCODES[ opcode], attrs);
}
public final void visitMethodInsn( int opcode, String owner, String name, String desc) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "owner", "owner", "", owner);
attrs.addAttribute( "", "name", "name", "", name);
attrs.addAttribute( "", "desc", "desc", "", desc);
addElement( PrintCodeVisitor.OPCODES[ opcode], attrs);
}
public final void visitJumpInsn( int opcode, Label label) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "label", "label", "", getLabel( label));
addElement( PrintCodeVisitor.OPCODES[ opcode], attrs);
}
public final void visitLabel( Label label) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "name", "name", "", getLabel( label));
addElement( "Label", attrs);
}
public final void visitLdcInsn( Object cst) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "cst", "cst", "", SAXClassAdapter.encode( cst.toString()));
attrs.addAttribute( "", "desc", "desc", "", Type.getDescriptor( cst.getClass()));
addElement( PrintCodeVisitor.OPCODES[ Constants.LDC], attrs);
}
public final void visitIincInsn( int var, int increment) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "var", "var", "", Integer.toString( var));
attrs.addAttribute( "", "inc", "inc", "", Integer.toString( increment));
addElement( PrintCodeVisitor.OPCODES[ Constants.IINC], attrs);
}
public final void visitTableSwitchInsn( int min, int max, Label dflt, Label[] labels) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "min", "min", "", Integer.toString( min));
attrs.addAttribute( "", "max", "max", "", Integer.toString( max));
attrs.addAttribute( "", "dflt", "dflt", "", getLabel( dflt));
String o = PrintCodeVisitor.OPCODES[ Constants.TABLESWITCH];
addStart( o, attrs);
for( int i = 0; i < labels.length; i++) {
AttributesImpl att2 = new AttributesImpl();
att2.addAttribute( "", "name", "name", "", getLabel( labels[ i]));
addElement( "label", att2);
}
addEnd( o);
}
public final void visitLookupSwitchInsn( Label dflt, int[] keys, Label[] labels) {
AttributesImpl att = new AttributesImpl();
att.addAttribute( "", "dflt", "dflt", "", getLabel( dflt));
String o = PrintCodeVisitor.OPCODES[ Constants.LOOKUPSWITCH];
addStart( o, att);
for( int i = 0; i < labels.length; i++) {
AttributesImpl att2 = new AttributesImpl();
att2.addAttribute( "", "name", "name", "", getLabel( labels[ i]));
att2.addAttribute( "", "key", "key", "", Integer.toString( keys[ i]));
addElement( "label", att2);
}
addEnd( o);
}
public final void visitMultiANewArrayInsn( String desc, int dims) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "desc", "desc", "", desc);
attrs.addAttribute( "", "dims", "dims", "", Integer.toString( dims));
addElement( PrintCodeVisitor.OPCODES[ Constants.MULTIANEWARRAY], attrs);
}
public final void visitTryCatchBlock( Label start, Label end, Label handler, String type) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "start", "start", "", getLabel( start));
attrs.addAttribute( "", "end", "end", "", getLabel( end));
attrs.addAttribute( "", "handler", "handler", "", getLabel( handler));
if( type!=null) attrs.addAttribute( "", "type", "type", "", type);
addElement( "TryCatch", attrs);
}
public final void visitMaxs( int maxStack, int maxLocals) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "maxStack", "maxStack", "", Integer.toString( maxStack));
attrs.addAttribute( "", "maxLocals", "maxLocals", "", Integer.toString( maxLocals));
addElement( "Max", attrs);
addEnd( "code");
addEnd( "method");
// TODO ensure it it is ok to close method element here
}
public final void visitLocalVariable( String name, String desc, Label start, Label end, int index) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "name", "name", "", name);
attrs.addAttribute( "", "desc", "desc", "", desc);
attrs.addAttribute( "", "start", "start", "", getLabel( start));
attrs.addAttribute( "", "end", "end", "", getLabel( end));
attrs.addAttribute( "", "var", "var", "", Integer.toString( index));
addElement( "LocalVar", attrs);
}
public final void visitLineNumber( int line, Label start) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute( "", "line", "line", "", Integer.toString( line));
attrs.addAttribute( "", "start", "start", "", getLabel( start));
addElement( "LineNumber", attrs);
}
public final void visitAttribute( Attribute attr) {
// TODO Auto-generated SAXCodeAdapter.visitAttribute
}
private final String getLabel( Label label) {
String name = (String) labelNames.get( label);
if( name==null) {
name = Integer.toString( labelNames.size());
labelNames.put( label, name);
}
return name;
}
private final void addElement( String name, Attributes attrs) {
addStart( name, attrs);
addEnd( name);
}
private final void addStart( String name, Attributes attrs) {
try {
h.startElement( "", name, name, attrs);
} catch( SAXException ex) {
throw new RuntimeException( ex.toString());
}
}
private final void addEnd( String name) {
try {
h.endElement( "", name, name);
} catch( SAXException ex) {
throw new RuntimeException( ex.toString());
}
}
}
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