/* |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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/* |
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* This file is available under and governed by the GNU General Public |
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* License version 2 only, as published by the Free Software Foundation. |
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* However, the following notice accompanied the original version of this |
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* file: |
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* |
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* ASM: a very small and fast Java bytecode manipulation framework |
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* Copyright (c) 2000-2011 INRIA, France Telecom |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* 3. Neither the name of the copyright holders nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE |
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF |
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* THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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package jdk.internal.org.objectweb.asm.tree; |
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import java.util.ArrayList; |
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import java.util.Arrays; |
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import java.util.List; |
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import jdk.internal.org.objectweb.asm.AnnotationVisitor; |
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import jdk.internal.org.objectweb.asm.Attribute; |
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import jdk.internal.org.objectweb.asm.ClassVisitor; |
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import jdk.internal.org.objectweb.asm.FieldVisitor; |
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import jdk.internal.org.objectweb.asm.MethodVisitor; |
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import jdk.internal.org.objectweb.asm.ModuleVisitor; |
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import jdk.internal.org.objectweb.asm.Opcodes; |
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import jdk.internal.org.objectweb.asm.TypePath; |
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/** |
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* A node that represents a class. |
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* |
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* @author Eric Bruneton |
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*/ |
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public class ClassNode extends ClassVisitor { |
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/** |
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* The class version. |
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*/ |
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public int version; |
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/** |
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* The class's access flags (see {@link jdk.internal.org.objectweb.asm.Opcodes}). This |
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* field also indicates if the class is deprecated. |
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*/ |
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public int access; |
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/** |
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* The internal name of the class (see |
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* {@link jdk.internal.org.objectweb.asm.Type#getInternalName() getInternalName}). |
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*/ |
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public String name; |
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/** |
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* The signature of the class. May be <tt>null</tt>. |
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*/ |
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public String signature; |
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/** |
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* The internal of name of the super class (see |
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* {@link jdk.internal.org.objectweb.asm.Type#getInternalName() getInternalName}). For |
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* interfaces, the super class is {@link Object}. May be <tt>null</tt>, but |
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* only for the {@link Object} class. |
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*/ |
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public String superName; |
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/** |
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* The internal names of the class's interfaces (see |
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* {@link jdk.internal.org.objectweb.asm.Type#getInternalName() getInternalName}). This |
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* list is a list of {@link String} objects. |
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*/ |
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public List<String> interfaces; |
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/** |
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* The name of the source file from which this class was compiled. May be |
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* <tt>null</tt>. |
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*/ |
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public String sourceFile; |
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/** |
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* Debug information to compute the correspondence between source and |
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* compiled elements of the class. May be <tt>null</tt>. |
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*/ |
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public String sourceDebug; |
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/** |
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* Module information. May be <tt>null</tt>. |
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*/ |
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public ModuleNode module; |
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/** |
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* The internal name of the enclosing class of the class. May be |
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* <tt>null</tt>. |
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*/ |
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public String outerClass; |
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/** |
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* The name of the method that contains the class, or <tt>null</tt> if the |
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* class is not enclosed in a method. |
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*/ |
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public String outerMethod; |
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/** |
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* The descriptor of the method that contains the class, or <tt>null</tt> if |
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* the class is not enclosed in a method. |
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*/ |
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public String outerMethodDesc; |
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/** |
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* The runtime visible annotations of this class. This list is a list of |
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* {@link AnnotationNode} objects. May be <tt>null</tt>. |
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* |
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* @associates jdk.internal.org.objectweb.asm.tree.AnnotationNode |
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* @label visible |
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*/ |
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public List<AnnotationNode> visibleAnnotations; |
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/** |
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* The runtime invisible annotations of this class. This list is a list of |
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* {@link AnnotationNode} objects. May be <tt>null</tt>. |
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* |
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* @associates jdk.internal.org.objectweb.asm.tree.AnnotationNode |
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* @label invisible |
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*/ |
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public List<AnnotationNode> invisibleAnnotations; |
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/** |
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* The runtime visible type annotations of this class. This list is a list |
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* of {@link TypeAnnotationNode} objects. May be <tt>null</tt>. |
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* |
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* @associates jdk.internal.org.objectweb.asm.tree.TypeAnnotationNode |
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* @label visible |
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*/ |
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public List<TypeAnnotationNode> visibleTypeAnnotations; |
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/** |
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* The runtime invisible type annotations of this class. This list is a list |
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* of {@link TypeAnnotationNode} objects. May be <tt>null</tt>. |
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* |
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* @associates jdk.internal.org.objectweb.asm.tree.TypeAnnotationNode |
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* @label invisible |
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*/ |
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public List<TypeAnnotationNode> invisibleTypeAnnotations; |
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/** |
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* The non standard attributes of this class. This list is a list of |
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* {@link Attribute} objects. May be <tt>null</tt>. |
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* |
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* @associates jdk.internal.org.objectweb.asm.Attribute |
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*/ |
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public List<Attribute> attrs; |
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/** |
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* Informations about the inner classes of this class. This list is a list |
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* of {@link InnerClassNode} objects. |
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* |
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* @associates jdk.internal.org.objectweb.asm.tree.InnerClassNode |
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*/ |
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public List<InnerClassNode> innerClasses; |
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/** |
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* The fields of this class. This list is a list of {@link FieldNode} |
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* objects. |
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* |
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* @associates jdk.internal.org.objectweb.asm.tree.FieldNode |
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*/ |
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public List<FieldNode> fields; |
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/** |
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* The methods of this class. This list is a list of {@link MethodNode} |
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* objects. |
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* |
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* @associates jdk.internal.org.objectweb.asm.tree.MethodNode |
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*/ |
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public List<MethodNode> methods; |
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/** |
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* Constructs a new {@link ClassNode}. <i>Subclasses must not use this |
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* constructor</i>. Instead, they must use the {@link #ClassNode(int)} |
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* version. |
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* |
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* @throws IllegalStateException |
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* If a subclass calls this constructor. |
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*/ |
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public ClassNode() { |
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this(Opcodes.ASM6); |
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if (getClass() != ClassNode.class) { |
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throw new IllegalStateException(); |
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} |
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} |
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/** |
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* Constructs a new {@link ClassNode}. |
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* |
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* @param api |
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* the ASM API version implemented by this visitor. Must be one |
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* of {@link Opcodes#ASM4}, {@link Opcodes#ASM5} or {@link Opcodes#ASM6}. |
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*/ |
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public ClassNode(final int api) { |
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super(api); |
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this.interfaces = new ArrayList<String>(); |
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this.innerClasses = new ArrayList<InnerClassNode>(); |
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this.fields = new ArrayList<FieldNode>(); |
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this.methods = new ArrayList<MethodNode>(); |
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} |
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// ------------------------------------------------------------------------ |
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// Implementation of the ClassVisitor abstract class |
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// ------------------------------------------------------------------------ |
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@Override |
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public void visit(final int version, final int access, final String name, |
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final String signature, final String superName, |
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final String[] interfaces) { |
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this.version = version; |
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this.access = access; |
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this.name = name; |
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this.signature = signature; |
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this.superName = superName; |
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if (interfaces != null) { |
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this.interfaces.addAll(Arrays.asList(interfaces)); |
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} |
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} |
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@Override |
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public void visitSource(final String file, final String debug) { |
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sourceFile = file; |
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sourceDebug = debug; |
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} |
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@Override |
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public ModuleVisitor visitModule(final String name, final int access, |
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final String version) { |
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return module = new ModuleNode(name, access, version); |
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} |
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@Override |
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public void visitOuterClass(final String owner, final String name, |
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final String desc) { |
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outerClass = owner; |
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outerMethod = name; |
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outerMethodDesc = desc; |
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} |
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@Override |
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public AnnotationVisitor visitAnnotation(final String desc, |
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final boolean visible) { |
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AnnotationNode an = new AnnotationNode(desc); |
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if (visible) { |
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if (visibleAnnotations == null) { |
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visibleAnnotations = new ArrayList<AnnotationNode>(1); |
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} |
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visibleAnnotations.add(an); |
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} else { |
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if (invisibleAnnotations == null) { |
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invisibleAnnotations = new ArrayList<AnnotationNode>(1); |
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} |
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invisibleAnnotations.add(an); |
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} |
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return an; |
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} |
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@Override |
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public AnnotationVisitor visitTypeAnnotation(int typeRef, |
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TypePath typePath, String desc, boolean visible) { |
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TypeAnnotationNode an = new TypeAnnotationNode(typeRef, typePath, desc); |
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if (visible) { |
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if (visibleTypeAnnotations == null) { |
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visibleTypeAnnotations = new ArrayList<TypeAnnotationNode>(1); |
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} |
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visibleTypeAnnotations.add(an); |
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} else { |
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if (invisibleTypeAnnotations == null) { |
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invisibleTypeAnnotations = new ArrayList<TypeAnnotationNode>(1); |
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} |
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invisibleTypeAnnotations.add(an); |
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} |
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return an; |
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} |
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@Override |
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public void visitAttribute(final Attribute attr) { |
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if (attrs == null) { |
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attrs = new ArrayList<Attribute>(1); |
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} |
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attrs.add(attr); |
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} |
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@Override |
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public void visitInnerClass(final String name, final String outerName, |
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final String innerName, final int access) { |
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InnerClassNode icn = new InnerClassNode(name, outerName, innerName, |
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access); |
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innerClasses.add(icn); |
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} |
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@Override |
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public FieldVisitor visitField(final int access, final String name, |
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final String desc, final String signature, final Object value) { |
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FieldNode fn = new FieldNode(access, name, desc, signature, value); |
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fields.add(fn); |
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return fn; |
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} |
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@Override |
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public MethodVisitor visitMethod(final int access, final String name, |
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final String desc, final String signature, final String[] exceptions) { |
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MethodNode mn = new MethodNode(access, name, desc, signature, |
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exceptions); |
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methods.add(mn); |
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return mn; |
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} |
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@Override |
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public void visitEnd() { |
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} |
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// ------------------------------------------------------------------------ |
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// Accept method |
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// ------------------------------------------------------------------------ |
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/** |
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* Checks that this class node is compatible with the given ASM API version. |
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* This methods checks that this node, and all its nodes recursively, do not |
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* contain elements that were introduced in more recent versions of the ASM |
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* API than the given version. |
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* |
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* @param api |
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* an ASM API version. Must be one of {@link Opcodes#ASM4}, |
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* {@link Opcodes#ASM5} or {@link Opcodes#ASM6}. |
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*/ |
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public void check(final int api) { |
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if (api < Opcodes.ASM6) { |
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if (module != null) { |
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throw new RuntimeException(); |
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} |
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} |
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if (api < Opcodes.ASM5) { |
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if (visibleTypeAnnotations != null |
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&& visibleTypeAnnotations.size() > 0) { |
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throw new RuntimeException(); |
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} |
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if (invisibleTypeAnnotations != null |
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&& invisibleTypeAnnotations.size() > 0) { |
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throw new RuntimeException(); |
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} |
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} |
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// checks attributes |
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int i, n; |
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n = visibleAnnotations == null ? 0 : visibleAnnotations.size(); |
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for (i = 0; i < n; ++i) { |
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visibleAnnotations.get(i).check(api); |
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} |
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n = invisibleAnnotations == null ? 0 : invisibleAnnotations.size(); |
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for (i = 0; i < n; ++i) { |
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invisibleAnnotations.get(i).check(api); |
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} |
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n = visibleTypeAnnotations == null ? 0 : visibleTypeAnnotations.size(); |
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for (i = 0; i < n; ++i) { |
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visibleTypeAnnotations.get(i).check(api); |
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} |
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n = invisibleTypeAnnotations == null ? 0 : invisibleTypeAnnotations |
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.size(); |
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for (i = 0; i < n; ++i) { |
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invisibleTypeAnnotations.get(i).check(api); |
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} |
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for (FieldNode f : fields) { |
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f.check(api); |
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} |
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for (MethodNode m : methods) { |
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m.check(api); |
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} |
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} |
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/** |
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* Makes the given class visitor visit this class. |
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* |
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* @param cv |
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* a class visitor. |
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*/ |
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public void accept(final ClassVisitor cv) { |
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// visits header |
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String[] interfaces = new String[this.interfaces.size()]; |
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this.interfaces.toArray(interfaces); |
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cv.visit(version, access, name, signature, superName, interfaces); |
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// visits source |
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if (sourceFile != null || sourceDebug != null) { |
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cv.visitSource(sourceFile, sourceDebug); |
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} |
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// visits module |
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if (module != null) { |
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module.accept(cv); |
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} |
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// visits outer class |
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if (outerClass != null) { |
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cv.visitOuterClass(outerClass, outerMethod, outerMethodDesc); |
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} |
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// visits attributes |
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int i, n; |
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n = visibleAnnotations == null ? 0 : visibleAnnotations.size(); |
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for (i = 0; i < n; ++i) { |
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AnnotationNode an = visibleAnnotations.get(i); |
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an.accept(cv.visitAnnotation(an.desc, true)); |
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} |
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n = invisibleAnnotations == null ? 0 : invisibleAnnotations.size(); |
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for (i = 0; i < n; ++i) { |
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AnnotationNode an = invisibleAnnotations.get(i); |
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an.accept(cv.visitAnnotation(an.desc, false)); |
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} |
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n = visibleTypeAnnotations == null ? 0 : visibleTypeAnnotations.size(); |
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for (i = 0; i < n; ++i) { |
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TypeAnnotationNode an = visibleTypeAnnotations.get(i); |
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an.accept(cv.visitTypeAnnotation(an.typeRef, an.typePath, an.desc, |
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true)); |
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} |
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n = invisibleTypeAnnotations == null ? 0 : invisibleTypeAnnotations |
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.size(); |
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for (i = 0; i < n; ++i) { |
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TypeAnnotationNode an = invisibleTypeAnnotations.get(i); |
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an.accept(cv.visitTypeAnnotation(an.typeRef, an.typePath, an.desc, |
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false)); |
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} |
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n = attrs == null ? 0 : attrs.size(); |
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for (i = 0; i < n; ++i) { |
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cv.visitAttribute(attrs.get(i)); |
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} |
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// visits inner classes |
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for (i = 0; i < innerClasses.size(); ++i) { |
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innerClasses.get(i).accept(cv); |
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} |
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// visits fields |
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for (i = 0; i < fields.size(); ++i) { |
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fields.get(i).accept(cv); |
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} |
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// visits methods |
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for (i = 0; i < methods.size(); ++i) { |
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methods.get(i).accept(cv); |
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} |
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// visits end |
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cv.visitEnd(); |
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} |
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} |