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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.snapscript.asm.tree;
import java.util.ArrayList;
import java.util.List;
import org.snapscript.asm.AnnotationVisitor;
import org.snapscript.asm.Attribute;
import org.snapscript.asm.ClassVisitor;
import org.snapscript.asm.FieldVisitor;
import org.snapscript.asm.Opcodes;
import org.snapscript.asm.TypePath;
/**
* A node that represents a field.
*
* @author Eric Bruneton
*/
public class FieldNode extends FieldVisitor {
/**
* The field's access flags (see {@link org.snapscript.asm.Opcodes}). This
* field also indicates if the field is synthetic and/or deprecated.
*/
public int access;
/**
* The field's name.
*/
public String name;
/**
* The field's descriptor (see {@link org.snapscript.asm.Type}).
*/
public String desc;
/**
* The field's signature. May be 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 {@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. 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 field. 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 field. 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 field. 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 field. This list is a list of
* {@link Attribute} objects. May be null.
*
* @associates org.objectweb.asm.Attribute
*/
public List attrs;
/**
* Constructs a new {@link FieldNode}. Subclasses must not use this
* constructor. Instead, they must use the
* {@link #FieldNode(int, int, String, String, String, Object)} version.
*
* @param access
* the field's access flags (see
* {@link org.snapscript.asm.Opcodes}). This parameter also
* indicates if the field is synthetic and/or deprecated.
* @param name
* the field's name.
* @param desc
* the field's descriptor (see {@link org.snapscript.asm.Type
* Type}).
* @param signature
* the field's signature.
* @param value
* the field's initial value. This parameter, which may be
* 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 desc,
final String signature, final Object value) {
this(Opcodes.ASM5, access, name, desc, signature, value);
if (getClass() != FieldNode.class) {
throw new IllegalStateException();
}
}
/**
* Constructs a new {@link FieldNode}. Subclasses must not use this
* constructor.
*
* @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 org.snapscript.asm.Opcodes}). This parameter also
* indicates if the field is synthetic and/or deprecated.
* @param name
* the field's name.
* @param desc
* the field's descriptor (see {@link org.snapscript.asm.Type
* Type}).
* @param signature
* the field's signature.
* @param value
* the field's initial value. This parameter, which may be
* 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 desc, final String signature, final Object value) {
super(api);
this.access = access;
this.name = name;
this.desc = desc;
this.signature = signature;
this.value = value;
}
// ------------------------------------------------------------------------
// Implementation of the FieldVisitor abstract class
// ------------------------------------------------------------------------
@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 visitEnd() {
}
// ------------------------------------------------------------------------
// Accept methods
// ------------------------------------------------------------------------
/**
* Checks that this field 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} or
* {@link Opcodes#ASM5}.
*/
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();
}
}
}
/**
* Makes the given class visitor visit this field.
*
* @param cv
* a class visitor.
*/
public void accept(final ClassVisitor cv) {
FieldVisitor fv = cv.visitField(access, name, desc, signature, value);
if (fv == null) {
return;
}
int i, n;
n = visibleAnnotations == null ? 0 : visibleAnnotations.size();
for (i = 0; i < n; ++i) {
AnnotationNode an = visibleAnnotations.get(i);
an.accept(fv.visitAnnotation(an.desc, true));
}
n = invisibleAnnotations == null ? 0 : invisibleAnnotations.size();
for (i = 0; i < n; ++i) {
AnnotationNode an = invisibleAnnotations.get(i);
an.accept(fv.visitAnnotation(an.desc, false));
}
n = visibleTypeAnnotations == null ? 0 : visibleTypeAnnotations.size();
for (i = 0; i < n; ++i) {
TypeAnnotationNode an = visibleTypeAnnotations.get(i);
an.accept(fv.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(fv.visitTypeAnnotation(an.typeRef, an.typePath, an.desc,
false));
}
n = attrs == null ? 0 : attrs.size();
for (i = 0; i < n; ++i) {
fv.visitAttribute(attrs.get(i));
}
fv.visitEnd();
}
}
