/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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/*
 * This file is available under and governed by the GNU General Public
 * License version 2 only, as published by the Free Software Foundation.
 * However, the following notice accompanied the original version of this
 * file:
 *
 * 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 jdk.internal.org.objectweb.asm.tree;

import java.util.ArrayList;
import java.util.List;
import jdk.internal.org.objectweb.asm.AnnotationVisitor;
import jdk.internal.org.objectweb.asm.Attribute;
import jdk.internal.org.objectweb.asm.ClassVisitor;
import jdk.internal.org.objectweb.asm.FieldVisitor;
import jdk.internal.org.objectweb.asm.Opcodes;
import jdk.internal.org.objectweb.asm.TypePath;

A node that represents a field.
Author:
Eric Bruneton/**
 * A node that represents a field.
 *
 * @author Eric Bruneton
 */
public class FieldNode extends FieldVisitor {

    
The field's access flags (see Opcodes). This field also indicates if the field is synthetic and/or deprecated. /**
      * The field's access flags (see {@link jdk.internal.org.objectweb.asm.Opcodes}). This field also indicates if
      * the field is synthetic and/or deprecated.
      */
    public int access;

    
The field's name. /** The field's name. */
    public String name;

    
The field's descriptor (see Type). /** The field's descriptor (see {@link jdk.internal.org.objectweb.asm.Type}). */
    public String desc;

    
The field's signature. May be null. /** The field's signature. May be {@literal null}. */
    public String signature;

    
The field's initial value. This field, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String. /**
      * The field's initial value. This field, which may be {@literal null} if the field does not have
      * an initial value, must be an {@link Integer}, a {@link Float}, a {@link Long}, a {@link Double}
      * or a {@link String}.
      */
    public Object value;

    
The runtime visible annotations of this field. May be null. /** The runtime visible annotations of this field. May be {@literal null}. */
    public List<AnnotationNode> visibleAnnotations;

    
The runtime invisible annotations of this field. May be null. /** The runtime invisible annotations of this field. May be {@literal null}. */
    public List<AnnotationNode> invisibleAnnotations;

    
The runtime visible type annotations of this field. May be null. /** The runtime visible type annotations of this field. May be {@literal null}. */
    public List<TypeAnnotationNode> visibleTypeAnnotations;

    
The runtime invisible type annotations of this field. May be null. /** The runtime invisible type annotations of this field. May be {@literal null}. */
    public List<TypeAnnotationNode> invisibleTypeAnnotations;

    
The non standard attributes of this field. * May be null. /** The non standard attributes of this field. * May be {@literal null}. */
    public List<Attribute> attrs;

    
Constructs a new FieldNode. Subclasses must not use this constructor. Instead, they must use the FieldNode(int, int, String, String, String, Object) version. 
Params:
access – the field's access flags (see Opcodes). This parameter also indicates if the field is synthetic and/or deprecated.
name – the field's name.
descriptor – the field's descriptor (see Type).
signature – the field's signature.
value – the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String.
Throws:
IllegalStateException – If a subclass calls this constructor./**
      * Constructs a new {@link FieldNode}. <i>Subclasses must not use this constructor</i>. Instead,
      * they must use the {@link #FieldNode(int, int, String, String, String, Object)} version.
      *
      * @param access the field's access flags (see {@link jdk.internal.org.objectweb.asm.Opcodes}). This parameter
      *     also indicates if the field is synthetic and/or deprecated.
      * @param name the field's name.
      * @param descriptor the field's descriptor (see {@link jdk.internal.org.objectweb.asm.Type}).
      * @param signature the field's signature.
      * @param value the field's initial value. This parameter, which may be {@literal null} if the
      *     field does not have an initial value, must be an {@link Integer}, a {@link Float}, a {@link
      *     Long}, a {@link Double} or a {@link String}.
      * @throws IllegalStateException If a subclass calls this constructor.
      */
    public FieldNode(
            final int access,
            final String name,
            final String descriptor,
            final String signature,
            final Object value) {
        this(Opcodes.ASM7, access, name, descriptor, signature, value);
        if (getClass() != FieldNode.class) {
            throw new IllegalStateException();
        }
    }

    
Constructs a new FieldNode. Subclasses must not use this constructor.
Params:
api – the ASM API version implemented by this visitor. Must be one of Opcodes.ASM4 or Opcodes.ASM5.
access – the field's access flags (see Opcodes). This parameter also indicates if the field is synthetic and/or deprecated.
name – the field's name.
descriptor – the field's descriptor (see Type).
signature – the field's signature.
value – the field's initial value. This parameter, which may be null if the field does not have an initial value, must be an Integer, a Float, a Long, a Double or a String./**
      * Constructs a new {@link FieldNode}. <i>Subclasses must not use this constructor</i>.
      *
      * @param api the ASM API version implemented by this visitor. Must be one of {@link Opcodes#ASM4}
      *     or {@link Opcodes#ASM5}.
      * @param access the field's access flags (see {@link jdk.internal.org.objectweb.asm.Opcodes}). This parameter
      *     also indicates if the field is synthetic and/or deprecated.
      * @param name the field's name.
      * @param descriptor the field's descriptor (see {@link jdk.internal.org.objectweb.asm.Type}).
      * @param signature the field's signature.
      * @param value the field's initial value. This parameter, which may be {@literal null} if the
      *     field does not have an initial value, must be an {@link Integer}, a {@link Float}, a {@link
      *     Long}, a {@link Double} or a {@link String}.
      */
    public FieldNode(
            final int api,
            final int access,
            final String name,
            final String descriptor,
            final String signature,
            final Object value) {
        super(api);
        this.access = access;
        this.name = name;
        this.desc = descriptor;
        this.signature = signature;
        this.value = value;
    }

    // -----------------------------------------------------------------------------------------------
    // Implementation of the FieldVisitor abstract class
    // -----------------------------------------------------------------------------------------------

    @Override
    public AnnotationVisitor visitAnnotation(final String descriptor, final boolean visible) {
        AnnotationNode annotation = new AnnotationNode(descriptor);
        if (visible) {
            if (visibleAnnotations == null) {
                visibleAnnotations = new ArrayList<AnnotationNode>(1);
            }
            visibleAnnotations.add(annotation);
        } else {
            if (invisibleAnnotations == null) {
                invisibleAnnotations = new ArrayList<AnnotationNode>(1);
            }
            invisibleAnnotations.add(annotation);
        }
        return annotation;
    }

    @Override
    public AnnotationVisitor visitTypeAnnotation(
            final int typeRef, final TypePath typePath, final String descriptor, final boolean visible) {
        TypeAnnotationNode typeAnnotation = new TypeAnnotationNode(typeRef, typePath, descriptor);
        if (visible) {
            if (visibleTypeAnnotations == null) {
                visibleTypeAnnotations = new ArrayList<TypeAnnotationNode>(1);
            }
            visibleTypeAnnotations.add(typeAnnotation);
        } else {
            if (invisibleTypeAnnotations == null) {
                invisibleTypeAnnotations = new ArrayList<TypeAnnotationNode>(1);
            }
            invisibleTypeAnnotations.add(typeAnnotation);
        }
        return typeAnnotation;
    }

    @Override
    public void visitAttribute(final Attribute attribute) {
        if (attrs == null) {
            attrs = new ArrayList<Attribute>(1);
        }
        attrs.add(attribute);
    }

    @Override
    public void visitEnd() {
        // Nothing to do.
    }

    // -----------------------------------------------------------------------------------------------
    // Accept methods
    // -----------------------------------------------------------------------------------------------

    
Checks that this field node is compatible with the given ASM API version. This method checks
that this node, and all its children recursively, do not contain elements that were introduced
in more recent versions of the ASM API than the given version.
Params:
api – an ASM API version. Must be one of Opcodes.ASM4, Opcodes.ASM5, Opcodes.ASM6 or Opcodes.ASM7./**
      * Checks that this field node is compatible with the given ASM API version. This method checks
      * that this node, and all its children 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},
      *     {@link Opcodes#ASM6} or {@link Opcodes#ASM7}.
      */
    public void check(final int api) {
        if (api == Opcodes.ASM4) {
            if (visibleTypeAnnotations != null && !visibleTypeAnnotations.isEmpty()) {
                throw new UnsupportedClassVersionException();
            }
            if (invisibleTypeAnnotations != null && !invisibleTypeAnnotations.isEmpty()) {
                throw new UnsupportedClassVersionException();
            }
        }
    }

    
Makes the given class visitor visit this field.
Params:
classVisitor – a class visitor./**
      * Makes the given class visitor visit this field.
      *
      * @param classVisitor a class visitor.
      */
    public void accept(final ClassVisitor classVisitor) {
        FieldVisitor fieldVisitor = classVisitor.visitField(access, name, desc, signature, value);
        if (fieldVisitor == null) {
            return;
        }
        // Visit the annotations.
        if (visibleAnnotations != null) {
            for (int i = 0, n = visibleAnnotations.size(); i < n; ++i) {
                AnnotationNode annotation = visibleAnnotations.get(i);
                annotation.accept(fieldVisitor.visitAnnotation(annotation.desc, true));
            }
        }
        if (invisibleAnnotations != null) {
            for (int i = 0, n = invisibleAnnotations.size(); i < n; ++i) {
                AnnotationNode annotation = invisibleAnnotations.get(i);
                annotation.accept(fieldVisitor.visitAnnotation(annotation.desc, false));
            }
        }
        if (visibleTypeAnnotations != null) {
            for (int i = 0, n = visibleTypeAnnotations.size(); i < n; ++i) {
                TypeAnnotationNode typeAnnotation = visibleTypeAnnotations.get(i);
                typeAnnotation.accept(
                        fieldVisitor.visitTypeAnnotation(
                                typeAnnotation.typeRef, typeAnnotation.typePath, typeAnnotation.desc, true));
            }
        }
        if (invisibleTypeAnnotations != null) {
            for (int i = 0, n = invisibleTypeAnnotations.size(); i < n; ++i) {
                TypeAnnotationNode typeAnnotation = invisibleTypeAnnotations.get(i);
                typeAnnotation.accept(
                        fieldVisitor.visitTypeAnnotation(
                                typeAnnotation.typeRef, typeAnnotation.typePath, typeAnnotation.desc, false));
            }
        }
        // Visit the non standard attributes.
        if (attrs != null) {
            for (int i = 0, n = attrs.size(); i < n; ++i) {
                fieldVisitor.visitAttribute(attrs.get(i));
            }
        }
        fieldVisitor.visitEnd();
    }
}