| // 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.apache.tapestry5.internal.plastic.asm.tree; |
| |
| import java.util.List; |
| import org.apache.tapestry5.internal.plastic.asm.AnnotationVisitor; |
| import org.apache.tapestry5.internal.plastic.asm.Attribute; |
| import org.apache.tapestry5.internal.plastic.asm.ClassVisitor; |
| import org.apache.tapestry5.internal.plastic.asm.FieldVisitor; |
| import org.apache.tapestry5.internal.plastic.asm.Opcodes; |
| import org.apache.tapestry5.internal.plastic.asm.TypePath; |
| |
| /** |
| * A node that represents a field. |
| * |
| * @author Eric Bruneton |
| */ |
| public class FieldNode extends FieldVisitor { |
| |
| /** |
| * The field's access flags (see {@link org.apache.tapestry5.internal.plastic.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.apache.tapestry5.internal.plastic.asm.Type}). */ |
| public String desc; |
| |
| /** The field's signature. May be {@literal null}. */ |
| public String signature; |
| |
| /** |
| * 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 {@literal null}. */ |
| public List<AnnotationNode> visibleAnnotations; |
| |
| /** 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 {@literal null}. */ |
| public List<TypeAnnotationNode> visibleTypeAnnotations; |
| |
| /** 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 {@literal null}. */ |
| public List<Attribute> attrs; |
| |
| /** |
| * 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 org.apache.tapestry5.internal.plastic.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 org.apache.tapestry5.internal.plastic.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(/* latest api = */ Opcodes.ASM8, access, name, descriptor, signature, value); |
| if (getClass() != FieldNode.class) { |
| throw new IllegalStateException(); |
| } |
| } |
| |
| /** |
| * Constructs a new {@link FieldNode}. |
| * |
| * @param api the ASM API version implemented by this visitor. Must be one of {@link |
| * Opcodes#ASM4}, {@link Opcodes#ASM5}, {@link Opcodes#ASM6}, {@link Opcodes#ASM7} or {@link |
| * Opcodes#ASM8}. |
| * @param access the field's access flags (see {@link org.apache.tapestry5.internal.plastic.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 org.apache.tapestry5.internal.plastic.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) { |
| visibleAnnotations = Util.add(visibleAnnotations, annotation); |
| } else { |
| invisibleAnnotations = Util.add(invisibleAnnotations, 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) { |
| visibleTypeAnnotations = Util.add(visibleTypeAnnotations, typeAnnotation); |
| } else { |
| invisibleTypeAnnotations = Util.add(invisibleTypeAnnotations, typeAnnotation); |
| } |
| return typeAnnotation; |
| } |
| |
| @Override |
| public void visitAttribute(final Attribute attribute) { |
| attrs = Util.add(attrs, 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. |
| * |
| * @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. |
| * |
| * @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(); |
| } |
| } |