Subversion Repositories openrisc

/***

 * ASM XML Adapter

 * Copyright (c) 2004, Eugene Kuleshov

 * 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 org.objectweb.asm.xml;

import java.util.HashMap;

import java.util.Map;

import org.objectweb.asm.AnnotationVisitor;

import org.objectweb.asm.Attribute;

import org.objectweb.asm.MethodVisitor;

import org.objectweb.asm.Opcodes;

import org.objectweb.asm.Label;

import org.objectweb.asm.Type;

import org.objectweb.asm.util.AbstractVisitor;

import org.xml.sax.ContentHandler;

import org.xml.sax.helpers.AttributesImpl;

/**

 * A {@link MethodVisitor} that generates SAX 2.0 events from the visited

 * method.

 *

 * @see org.objectweb.asm.xml.SAXClassAdapter

 * @see org.objectweb.asm.xml.Processor

 *

 * @author Eugene Kuleshov

 */

public final class SAXCodeAdapter extends SAXAdapter implements MethodVisitor {

    private Map labelNames;

    /**

     * Constructs a new {@link SAXCodeAdapter SAXCodeAdapter} object.

     *

     * @param h content handler that will be used to send SAX 2.0 events.

     * @param access

     */

    public SAXCodeAdapter(ContentHandler h, int access) {

        super(h);

        labelNames = new HashMap();

        if ((access & (Opcodes.ACC_ABSTRACT | Opcodes.ACC_INTERFACE | Opcodes.ACC_NATIVE)) == 0)

        {

            addStart("code", new AttributesImpl());

        }

    }

    public final void visitCode() {

    }

    public final void visitInsn(int opcode) {

        addElement(AbstractVisitor.OPCODES[opcode], new AttributesImpl());

    }

    public final void visitIntInsn(int opcode, int operand) {

        AttributesImpl attrs = new AttributesImpl();

        attrs.addAttribute("", "value", "value", "", Integer.toString(operand));

        addElement(AbstractVisitor.OPCODES[opcode], attrs);

    }

    public final void visitVarInsn(int opcode, int var) {

        AttributesImpl attrs = new AttributesImpl();

        attrs.addAttribute("", "var", "var", "", Integer.toString(var));

        addElement(AbstractVisitor.OPCODES[opcode], attrs);

    }

    public final void visitTypeInsn(int opcode, String desc) {

        AttributesImpl attrs = new AttributesImpl();

        attrs.addAttribute("", "desc", "desc", "", desc);

        addElement(AbstractVisitor.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(AbstractVisitor.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(AbstractVisitor.OPCODES[opcode], attrs);

    }

    public final void visitJumpInsn(int opcode, Label label) {

        AttributesImpl attrs = new AttributesImpl();

        attrs.addAttribute("", "label", "label", "", getLabel(label));

        addElement(AbstractVisitor.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(AbstractVisitor.OPCODES[Opcodes.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(AbstractVisitor.OPCODES[Opcodes.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 = AbstractVisitor.OPCODES[Opcodes.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 = AbstractVisitor.OPCODES[Opcodes.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(AbstractVisitor.OPCODES[Opcodes.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");

    }

    public void visitLocalVariable(

        String name,

        String desc,

        String signature,

        Label start,

        Label end,

        int index)

    {

        AttributesImpl attrs = new AttributesImpl();

        attrs.addAttribute("", "name", "name", "", name);

        attrs.addAttribute("", "desc", "desc", "", desc);

        if (signature != null)

            attrs.addAttribute("",

                    "signature",

                    "signature",

                    "",

                    SAXClassAdapter.encode(signature));

        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 AnnotationVisitor visitAnnotationDefault() {

        return new SAXAnnotationAdapter(getContentHandler(),

                "annotationDefault",

                0,

                null,

                null);

    }

    public AnnotationVisitor visitAnnotation(String desc, boolean visible) {

        return new SAXAnnotationAdapter(getContentHandler(),

                "annotation",

                visible ? 1 : -1,

                null,

                desc);

    }

    public AnnotationVisitor visitParameterAnnotation(

        int parameter,

        String desc,

        boolean visible)

    {

        return new SAXAnnotationAdapter(getContentHandler(),

                "parameterAnnotation",

                visible ? 1 : -1,

                parameter,

                desc);

    }

    public void visitEnd() {

        addEnd("method");

    }

    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;

    }

}