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/***
* ASM: a very small and fast Java bytecode manipulation framework
* Copyright (c) 2000-2011 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 org.objectweb.asm.tree;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import org.objectweb.asm.AnnotationVisitor;
import org.objectweb.asm.Attribute;
import org.objectweb.asm.ClassVisitor;
import org.objectweb.asm.FieldVisitor;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.ModuleVisitor;
import org.objectweb.asm.Opcodes;
import org.objectweb.asm.TypePath;
/**
* A node that represents a class.
*
* @author Eric Bruneton
*/
public class ClassNode extends ClassVisitor {
/**
* The class version.
*/
public int version;
/**
* The class's access flags (see {@link org.objectweb.asm.Opcodes}). This
* field also indicates if the class is deprecated.
*/
public int access;
/**
* The internal name of the class (see
* {@link org.objectweb.asm.Type#getInternalName() getInternalName}).
*/
public String name;
/**
* The signature of the class. May be null.
*/
public String signature;
/**
* The internal of name of the super class (see
* {@link org.objectweb.asm.Type#getInternalName() getInternalName}). For
* interfaces, the super class is {@link Object}. May be null, but
* only for the {@link Object} class.
*/
public String superName;
/**
* The internal names of the class's interfaces (see
* {@link org.objectweb.asm.Type#getInternalName() getInternalName}). This
* list is a list of {@link String} objects.
*/
public List interfaces;
/**
* The name of the source file from which this class was compiled. May be
* null.
*/
public String sourceFile;
/**
* Debug information to compute the correspondence between source and
* compiled elements of the class. May be null.
*/
public String sourceDebug;
/**
* Module information. May be null.
*/
public ModuleNode module;
/**
* The internal name of the enclosing class of the class. May be
* null.
*/
public String outerClass;
/**
* The name of the method that contains the class, or null if the
* class is not enclosed in a method.
*/
public String outerMethod;
/**
* The descriptor of the method that contains the class, or null if
* the class is not enclosed in a method.
*/
public String outerMethodDesc;
/**
* The runtime visible annotations of this class. This list is a list of
* {@link AnnotationNode} objects. May be null.
*
* @associates org.objectweb.asm.tree.AnnotationNode
* @label visible
*/
public List visibleAnnotations;
/**
* The runtime invisible annotations of this class. This list is a list of
* {@link AnnotationNode} objects. May be null.
*
* @associates org.objectweb.asm.tree.AnnotationNode
* @label invisible
*/
public List invisibleAnnotations;
/**
* The runtime visible type annotations of this class. This list is a list
* of {@link TypeAnnotationNode} objects. May be null.
*
* @associates org.objectweb.asm.tree.TypeAnnotationNode
* @label visible
*/
public List visibleTypeAnnotations;
/**
* The runtime invisible type annotations of this class. This list is a list
* of {@link TypeAnnotationNode} objects. May be null.
*
* @associates org.objectweb.asm.tree.TypeAnnotationNode
* @label invisible
*/
public List invisibleTypeAnnotations;
/**
* The non standard attributes of this class. This list is a list of
* {@link Attribute} objects. May be null.
*
* @associates org.objectweb.asm.Attribute
*/
public List attrs;
/**
* Informations about the inner classes of this class. This list is a list
* of {@link InnerClassNode} objects.
*
* @associates org.objectweb.asm.tree.InnerClassNode
*/
public List innerClasses;
/**
* The fields of this class. This list is a list of {@link FieldNode}
* objects.
*
* @associates org.objectweb.asm.tree.FieldNode
*/
public List fields;
/**
* The methods of this class. This list is a list of {@link MethodNode}
* objects.
*
* @associates org.objectweb.asm.tree.MethodNode
*/
public List methods;
/**
* Constructs a new {@link ClassNode}. Subclasses must not use this
* constructor. Instead, they must use the {@link #ClassNode(int)}
* version.
*
* @throws IllegalStateException
* If a subclass calls this constructor.
*/
public ClassNode() {
this(Opcodes.ASM6);
if (getClass() != ClassNode.class) {
throw new IllegalStateException();
}
}
/**
* Constructs a new {@link ClassNode}.
*
* @param api
* the ASM API version implemented by this visitor. Must be one
* of {@link Opcodes#ASM4}, {@link Opcodes#ASM5} or {@link Opcodes#ASM6}.
*/
public ClassNode(final int api) {
super(api);
this.interfaces = new ArrayList();
this.innerClasses = new ArrayList();
this.fields = new ArrayList();
this.methods = new ArrayList();
}
// ------------------------------------------------------------------------
// Implementation of the ClassVisitor abstract class
// ------------------------------------------------------------------------
@Override
public void visit(final int version, final int access, final String name,
final String signature, final String superName,
final String[] interfaces) {
this.version = version;
this.access = access;
this.name = name;
this.signature = signature;
this.superName = superName;
if (interfaces != null) {
this.interfaces.addAll(Arrays.asList(interfaces));
}
}
@Override
public void visitSource(final String file, final String debug) {
sourceFile = file;
sourceDebug = debug;
}
@Override
public ModuleVisitor visitModule() {
return module = new ModuleNode();
}
@Override
public void visitOuterClass(final String owner, final String name,
final String desc) {
outerClass = owner;
outerMethod = name;
outerMethodDesc = desc;
}
@Override
public AnnotationVisitor visitAnnotation(final String desc,
final boolean visible) {
AnnotationNode an = new AnnotationNode(desc);
if (visible) {
if (visibleAnnotations == null) {
visibleAnnotations = new ArrayList(1);
}
visibleAnnotations.add(an);
} else {
if (invisibleAnnotations == null) {
invisibleAnnotations = new ArrayList(1);
}
invisibleAnnotations.add(an);
}
return an;
}
@Override
public AnnotationVisitor visitTypeAnnotation(int typeRef,
TypePath typePath, String desc, boolean visible) {
TypeAnnotationNode an = new TypeAnnotationNode(typeRef, typePath, desc);
if (visible) {
if (visibleTypeAnnotations == null) {
visibleTypeAnnotations = new ArrayList(1);
}
visibleTypeAnnotations.add(an);
} else {
if (invisibleTypeAnnotations == null) {
invisibleTypeAnnotations = new ArrayList(1);
}
invisibleTypeAnnotations.add(an);
}
return an;
}
@Override
public void visitAttribute(final Attribute attr) {
if (attrs == null) {
attrs = new ArrayList(1);
}
attrs.add(attr);
}
@Override
public void visitInnerClass(final String name, final String outerName,
final String innerName, final int access) {
InnerClassNode icn = new InnerClassNode(name, outerName, innerName,
access);
innerClasses.add(icn);
}
@Override
public FieldVisitor visitField(final int access, final String name,
final String desc, final String signature, final Object value) {
FieldNode fn = new FieldNode(access, name, desc, signature, value);
fields.add(fn);
return fn;
}
@Override
public MethodVisitor visitMethod(final int access, final String name,
final String desc, final String signature, final String[] exceptions) {
MethodNode mn = new MethodNode(access, name, desc, signature,
exceptions);
methods.add(mn);
return mn;
}
@Override
public void visitEnd() {
}
// ------------------------------------------------------------------------
// Accept method
// ------------------------------------------------------------------------
/**
* Checks that this class node is compatible with the given ASM API version.
* This methods checks that this node, and all its nodes recursively, do not
* contain elements that were introduced in more recent versions of the ASM
* API than the given version.
*
* @param api
* an ASM API version. Must be one of {@link Opcodes#ASM4},
* {@link Opcodes#ASM5} or {@link Opcodes#ASM6}.
*/
public void check(final int api) {
if (api == Opcodes.ASM4) {
if (visibleTypeAnnotations != null
&& visibleTypeAnnotations.size() > 0) {
throw new RuntimeException();
}
if (invisibleTypeAnnotations != null
&& invisibleTypeAnnotations.size() > 0) {
throw new RuntimeException();
}
for (FieldNode f : fields) {
f.check(api);
}
for (MethodNode m : methods) {
m.check(api);
}
}
}
/**
* Makes the given class visitor visit this class.
*
* @param cv
* a class visitor.
*/
public void accept(final ClassVisitor cv) {
// visits header
String[] interfaces = new String[this.interfaces.size()];
this.interfaces.toArray(interfaces);
cv.visit(version, access, name, signature, superName, interfaces);
// visits source
if (sourceFile != null || sourceDebug != null) {
cv.visitSource(sourceFile, sourceDebug);
}
// visits outer class
if (outerClass != null) {
cv.visitOuterClass(outerClass, outerMethod, outerMethodDesc);
}
// visits attributes
int i, n;
n = visibleAnnotations == null ? 0 : visibleAnnotations.size();
for (i = 0; i < n; ++i) {
AnnotationNode an = visibleAnnotations.get(i);
an.accept(cv.visitAnnotation(an.desc, true));
}
n = invisibleAnnotations == null ? 0 : invisibleAnnotations.size();
for (i = 0; i < n; ++i) {
AnnotationNode an = invisibleAnnotations.get(i);
an.accept(cv.visitAnnotation(an.desc, false));
}
n = visibleTypeAnnotations == null ? 0 : visibleTypeAnnotations.size();
for (i = 0; i < n; ++i) {
TypeAnnotationNode an = visibleTypeAnnotations.get(i);
an.accept(cv.visitTypeAnnotation(an.typeRef, an.typePath, an.desc,
true));
}
n = invisibleTypeAnnotations == null ? 0 : invisibleTypeAnnotations
.size();
for (i = 0; i < n; ++i) {
TypeAnnotationNode an = invisibleTypeAnnotations.get(i);
an.accept(cv.visitTypeAnnotation(an.typeRef, an.typePath, an.desc,
false));
}
n = attrs == null ? 0 : attrs.size();
for (i = 0; i < n; ++i) {
cv.visitAttribute(attrs.get(i));
}
// visits inner classes
for (i = 0; i < innerClasses.size(); ++i) {
innerClasses.get(i).accept(cv);
}
// visits fields
for (i = 0; i < fields.size(); ++i) {
fields.get(i).accept(cv);
}
// visits methods
for (i = 0; i < methods.size(); ++i) {
methods.get(i).accept(cv);
}
// visits end
cv.visitEnd();
}
}
