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/***
* ASM XML Adapter
* Copyright (c) 2004-2011, 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 scouter.org.objectweb.asm.xml;
import java.util.HashMap;
import java.util.Map;
import org.xml.sax.helpers.AttributesImpl;
import scouter.org.objectweb.asm.AnnotationVisitor;
import scouter.org.objectweb.asm.Handle;
import scouter.org.objectweb.asm.Label;
import scouter.org.objectweb.asm.MethodVisitor;
import scouter.org.objectweb.asm.Opcodes;
import scouter.org.objectweb.asm.Type;
import scouter.org.objectweb.asm.TypePath;
import scouter.org.objectweb.asm.util.Printer;
/**
* A {@link MethodVisitor} that generates SAX 2.0 events from the visited
* method.
*
* @see scouter.org.objectweb.asm.xml.SAXClassAdapter
* @see scouter.org.objectweb.asm.xml.Processor
*
* @author Eugene Kuleshov
*/
public final class SAXCodeAdapter extends MethodVisitor {
static final String[] TYPES = { "top", "int", "float", "double", "long",
"null", "uninitializedThis" };
SAXAdapter sa;
int access;
private final Map labelNames;
/**
* Constructs a new {@link SAXCodeAdapter SAXCodeAdapter} object.
*
* @param sa
* content handler that will be used to send SAX 2.0 events.
*/
public SAXCodeAdapter(final SAXAdapter sa, final int access) {
super(Opcodes.ASM5);
this.sa = sa;
this.access = access;
this.labelNames = new HashMap();
}
@Override
public void visitParameter(String name, int access) {
AttributesImpl attrs = new AttributesImpl();
if (name != null) {
attrs.addAttribute("", "name", "name", "", name);
}
StringBuffer sb = new StringBuffer();
SAXClassAdapter.appendAccess(access, sb);
attrs.addAttribute("", "access", "access", "", sb.toString());
sa.addElement("parameter", attrs);
}
@Override
public final void visitCode() {
if ((access & (Opcodes.ACC_ABSTRACT | Opcodes.ACC_INTERFACE | Opcodes.ACC_NATIVE)) == 0) {
sa.addStart("code", new AttributesImpl());
}
}
@Override
public void visitFrame(final int type, final int nLocal,
final Object[] local, final int nStack, final Object[] stack) {
AttributesImpl attrs = new AttributesImpl();
switch (type) {
case Opcodes.F_NEW:
case Opcodes.F_FULL:
if (type == Opcodes.F_NEW) {
attrs.addAttribute("", "type", "type", "", "NEW");
} else {
attrs.addAttribute("", "type", "type", "", "FULL");
}
sa.addStart("frame", attrs);
appendFrameTypes(true, nLocal, local);
appendFrameTypes(false, nStack, stack);
break;
case Opcodes.F_APPEND:
attrs.addAttribute("", "type", "type", "", "APPEND");
sa.addStart("frame", attrs);
appendFrameTypes(true, nLocal, local);
break;
case Opcodes.F_CHOP:
attrs.addAttribute("", "type", "type", "", "CHOP");
attrs.addAttribute("", "count", "count", "",
Integer.toString(nLocal));
sa.addStart("frame", attrs);
break;
case Opcodes.F_SAME:
attrs.addAttribute("", "type", "type", "", "SAME");
sa.addStart("frame", attrs);
break;
case Opcodes.F_SAME1:
attrs.addAttribute("", "type", "type", "", "SAME1");
sa.addStart("frame", attrs);
appendFrameTypes(false, 1, stack);
break;
}
sa.addEnd("frame");
}
private void appendFrameTypes(final boolean local, final int n,
final Object[] types) {
for (int i = 0; i < n; ++i) {
Object type = types[i];
AttributesImpl attrs = new AttributesImpl();
if (type instanceof String) {
attrs.addAttribute("", "type", "type", "", (String) type);
} else if (type instanceof Integer) {
attrs.addAttribute("", "type", "type", "",
TYPES[((Integer) type).intValue()]);
} else {
attrs.addAttribute("", "type", "type", "", "uninitialized");
attrs.addAttribute("", "label", "label", "",
getLabel((Label) type));
}
sa.addElement(local ? "local" : "stack", attrs);
}
}
@Override
public final void visitInsn(final int opcode) {
sa.addElement(Printer.OPCODES[opcode], new AttributesImpl());
}
@Override
public final void visitIntInsn(final int opcode, final int operand) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "value", "value", "", Integer.toString(operand));
sa.addElement(Printer.OPCODES[opcode], attrs);
}
@Override
public final void visitVarInsn(final int opcode, final int var) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "var", "var", "", Integer.toString(var));
sa.addElement(Printer.OPCODES[opcode], attrs);
}
@Override
public final void visitTypeInsn(final int opcode, final String type) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "desc", "desc", "", type);
sa.addElement(Printer.OPCODES[opcode], attrs);
}
@Override
public final void visitFieldInsn(final int opcode, final String owner,
final String name, final String desc) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "owner", "owner", "", owner);
attrs.addAttribute("", "name", "name", "", name);
attrs.addAttribute("", "desc", "desc", "", desc);
sa.addElement(Printer.OPCODES[opcode], attrs);
}
@Override
public final void visitMethodInsn(final int opcode, final String owner,
final String name, final String desc, final boolean itf) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "owner", "owner", "", owner);
attrs.addAttribute("", "name", "name", "", name);
attrs.addAttribute("", "desc", "desc", "", desc);
attrs.addAttribute("", "itf", "itf", "", itf ? "true" : "false");
sa.addElement(Printer.OPCODES[opcode], attrs);
}
@Override
public void visitInvokeDynamicInsn(String name, String desc, Handle bsm,
Object... bsmArgs) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "name", "name", "", name);
attrs.addAttribute("", "desc", "desc", "", desc);
attrs.addAttribute("", "bsm", "bsm", "",
SAXClassAdapter.encode(bsm.toString()));
sa.addStart("INVOKEDYNAMIC", attrs);
for (int i = 0; i < bsmArgs.length; i++) {
sa.addElement("bsmArg", getConstantAttribute(bsmArgs[i]));
}
sa.addEnd("INVOKEDYNAMIC");
}
@Override
public final void visitJumpInsn(final int opcode, final Label label) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "label", "label", "", getLabel(label));
sa.addElement(Printer.OPCODES[opcode], attrs);
}
@Override
public final void visitLabel(final Label label) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "name", "name", "", getLabel(label));
sa.addElement("Label", attrs);
}
@Override
public final void visitLdcInsn(final Object cst) {
sa.addElement(Printer.OPCODES[Opcodes.LDC], getConstantAttribute(cst));
}
private static AttributesImpl getConstantAttribute(final Object cst) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "cst", "cst", "",
SAXClassAdapter.encode(cst.toString()));
attrs.addAttribute("", "desc", "desc", "",
Type.getDescriptor(cst.getClass()));
return attrs;
}
@Override
public final void visitIincInsn(final int var, final int increment) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "var", "var", "", Integer.toString(var));
attrs.addAttribute("", "inc", "inc", "", Integer.toString(increment));
sa.addElement(Printer.OPCODES[Opcodes.IINC], attrs);
}
@Override
public final void visitTableSwitchInsn(final int min, final int max,
final Label dflt, final 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 = Printer.OPCODES[Opcodes.TABLESWITCH];
sa.addStart(o, attrs);
for (int i = 0; i < labels.length; i++) {
AttributesImpl att2 = new AttributesImpl();
att2.addAttribute("", "name", "name", "", getLabel(labels[i]));
sa.addElement("label", att2);
}
sa.addEnd(o);
}
@Override
public final void visitLookupSwitchInsn(final Label dflt, final int[] keys,
final Label[] labels) {
AttributesImpl att = new AttributesImpl();
att.addAttribute("", "dflt", "dflt", "", getLabel(dflt));
String o = Printer.OPCODES[Opcodes.LOOKUPSWITCH];
sa.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]));
sa.addElement("label", att2);
}
sa.addEnd(o);
}
@Override
public final void visitMultiANewArrayInsn(final String desc, final int dims) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "desc", "desc", "", desc);
attrs.addAttribute("", "dims", "dims", "", Integer.toString(dims));
sa.addElement(Printer.OPCODES[Opcodes.MULTIANEWARRAY], attrs);
}
@Override
public final void visitTryCatchBlock(final Label start, final Label end,
final Label handler, final 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);
}
sa.addElement("TryCatch", attrs);
}
@Override
public final void visitMaxs(final int maxStack, final int maxLocals) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "maxStack", "maxStack", "",
Integer.toString(maxStack));
attrs.addAttribute("", "maxLocals", "maxLocals", "",
Integer.toString(maxLocals));
sa.addElement("Max", attrs);
sa.addEnd("code");
}
@Override
public void visitLocalVariable(final String name, final String desc,
final String signature, final Label start, final Label end,
final 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));
sa.addElement("LocalVar", attrs);
}
@Override
public final void visitLineNumber(final int line, final Label start) {
AttributesImpl attrs = new AttributesImpl();
attrs.addAttribute("", "line", "line", "", Integer.toString(line));
attrs.addAttribute("", "start", "start", "", getLabel(start));
sa.addElement("LineNumber", attrs);
}
@Override
public AnnotationVisitor visitAnnotationDefault() {
return new SAXAnnotationAdapter(sa, "annotationDefault", 0, null, null);
}
@Override
public AnnotationVisitor visitAnnotation(final String desc,
final boolean visible) {
return new SAXAnnotationAdapter(sa, "annotation", visible ? 1 : -1,
null, desc);
}
@Override
public AnnotationVisitor visitTypeAnnotation(int typeRef,
TypePath typePath, String desc, boolean visible) {
return new SAXAnnotationAdapter(sa, "typeAnnotation", visible ? 1 : -1,
null, desc, typeRef, typePath);
}
@Override
public AnnotationVisitor visitParameterAnnotation(final int parameter,
final String desc, final boolean visible) {
return new SAXAnnotationAdapter(sa, "parameterAnnotation", visible ? 1
: -1, parameter, desc);
}
@Override
public AnnotationVisitor visitInsnAnnotation(int typeRef,
TypePath typePath, String desc, boolean visible) {
return new SAXAnnotationAdapter(sa, "insnAnnotation", visible ? 1 : -1,
null, desc, typeRef, typePath);
}
@Override
public AnnotationVisitor visitTryCatchAnnotation(int typeRef,
TypePath typePath, String desc, boolean visible) {
return new SAXAnnotationAdapter(sa, "tryCatchAnnotation", visible ? 1
: -1, null, desc, typeRef, typePath);
}
@Override
public AnnotationVisitor visitLocalVariableAnnotation(int typeRef,
TypePath typePath, Label[] start, Label[] end, int[] index,
String desc, boolean visible) {
String[] s = new String[start.length];
String[] e = new String[end.length];
for (int i = 0; i < s.length; ++i) {
s[i] = getLabel(start[i]);
}
for (int i = 0; i < e.length; ++i) {
e[i] = getLabel(end[i]);
}
return new SAXAnnotationAdapter(sa, "localVariableAnnotation",
visible ? 1 : -1, null, desc, typeRef, typePath, s, e, index);
}
@Override
public void visitEnd() {
sa.addEnd("method");
}
private final String getLabel(final Label label) {
String name = labelNames.get(label);
if (name == null) {
name = Integer.toString(labelNames.size());
labelNames.put(label, name);
}
return name;
}
}
