| /*** |
| * ASM: a very small and fast Java bytecode manipulation framework |
| * Copyright (c) 2000-2007 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 com.google.gwt.dev.asm; |
| |
| /** |
| * An {@link FieldVisitor} that generates Java fields in bytecode form. |
| * |
| * @author Eric Bruneton |
| */ |
| final class FieldWriter implements FieldVisitor { |
| |
| /** |
| * Next field writer (see {@link ClassWriter#firstField firstField}). |
| */ |
| FieldWriter next; |
| |
| /** |
| * The class writer to which this field must be added. |
| */ |
| private final ClassWriter cw; |
| |
| /** |
| * Access flags of this field. |
| */ |
| private final int access; |
| |
| /** |
| * The index of the constant pool item that contains the name of this |
| * method. |
| */ |
| private final int name; |
| |
| /** |
| * The index of the constant pool item that contains the descriptor of this |
| * field. |
| */ |
| private final int desc; |
| |
| /** |
| * The index of the constant pool item that contains the signature of this |
| * field. |
| */ |
| private int signature; |
| |
| /** |
| * The index of the constant pool item that contains the constant value of |
| * this field. |
| */ |
| private int value; |
| |
| /** |
| * The runtime visible annotations of this field. May be <tt>null</tt>. |
| */ |
| private AnnotationWriter anns; |
| |
| /** |
| * The runtime invisible annotations of this field. May be <tt>null</tt>. |
| */ |
| private AnnotationWriter ianns; |
| |
| /** |
| * The non standard attributes of this field. May be <tt>null</tt>. |
| */ |
| private Attribute attrs; |
| |
| // ------------------------------------------------------------------------ |
| // Constructor |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Constructs a new {@link FieldWriter}. |
| * |
| * @param cw the class writer to which this field must be added. |
| * @param access the field's access flags (see {@link Opcodes}). |
| * @param name the field's name. |
| * @param desc the field's descriptor (see {@link Type}). |
| * @param signature the field's signature. May be <tt>null</tt>. |
| * @param value the field's constant value. May be <tt>null</tt>. |
| */ |
| FieldWriter( |
| final ClassWriter cw, |
| final int access, |
| final String name, |
| final String desc, |
| final String signature, |
| final Object value) |
| { |
| if (cw.firstField == null) { |
| cw.firstField = this; |
| } else { |
| cw.lastField.next = this; |
| } |
| cw.lastField = this; |
| this.cw = cw; |
| this.access = access; |
| this.name = cw.newUTF8(name); |
| this.desc = cw.newUTF8(desc); |
| if (ClassReader.SIGNATURES && signature != null) { |
| this.signature = cw.newUTF8(signature); |
| } |
| if (value != null) { |
| this.value = cw.newConstItem(value).index; |
| } |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Implementation of the FieldVisitor interface |
| // ------------------------------------------------------------------------ |
| |
| public AnnotationVisitor visitAnnotation( |
| final String desc, |
| final boolean visible) |
| { |
| if (!ClassReader.ANNOTATIONS) { |
| return null; |
| } |
| ByteVector bv = new ByteVector(); |
| // write type, and reserve space for values count |
| bv.putShort(cw.newUTF8(desc)).putShort(0); |
| AnnotationWriter aw = new AnnotationWriter(cw, true, bv, bv, 2); |
| if (visible) { |
| aw.next = anns; |
| anns = aw; |
| } else { |
| aw.next = ianns; |
| ianns = aw; |
| } |
| return aw; |
| } |
| |
| public void visitAttribute(final Attribute attr) { |
| attr.next = attrs; |
| attrs = attr; |
| } |
| |
| public void visitEnd() { |
| } |
| |
| // ------------------------------------------------------------------------ |
| // Utility methods |
| // ------------------------------------------------------------------------ |
| |
| /** |
| * Returns the size of this field. |
| * |
| * @return the size of this field. |
| */ |
| int getSize() { |
| int size = 8; |
| if (value != 0) { |
| cw.newUTF8("ConstantValue"); |
| size += 8; |
| } |
| if ((access & Opcodes.ACC_SYNTHETIC) != 0 |
| && (cw.version & 0xffff) < Opcodes.V1_5) |
| { |
| cw.newUTF8("Synthetic"); |
| size += 6; |
| } |
| if ((access & Opcodes.ACC_DEPRECATED) != 0) { |
| cw.newUTF8("Deprecated"); |
| size += 6; |
| } |
| if (ClassReader.SIGNATURES && signature != 0) { |
| cw.newUTF8("Signature"); |
| size += 8; |
| } |
| if (ClassReader.ANNOTATIONS && anns != null) { |
| cw.newUTF8("RuntimeVisibleAnnotations"); |
| size += 8 + anns.getSize(); |
| } |
| if (ClassReader.ANNOTATIONS && ianns != null) { |
| cw.newUTF8("RuntimeInvisibleAnnotations"); |
| size += 8 + ianns.getSize(); |
| } |
| if (attrs != null) { |
| size += attrs.getSize(cw, null, 0, -1, -1); |
| } |
| return size; |
| } |
| |
| /** |
| * Puts the content of this field into the given byte vector. |
| * |
| * @param out where the content of this field must be put. |
| */ |
| void put(final ByteVector out) { |
| out.putShort(access).putShort(name).putShort(desc); |
| int attributeCount = 0; |
| if (value != 0) { |
| ++attributeCount; |
| } |
| if ((access & Opcodes.ACC_SYNTHETIC) != 0 |
| && (cw.version & 0xffff) < Opcodes.V1_5) |
| { |
| ++attributeCount; |
| } |
| if ((access & Opcodes.ACC_DEPRECATED) != 0) { |
| ++attributeCount; |
| } |
| if (ClassReader.SIGNATURES && signature != 0) { |
| ++attributeCount; |
| } |
| if (ClassReader.ANNOTATIONS && anns != null) { |
| ++attributeCount; |
| } |
| if (ClassReader.ANNOTATIONS && ianns != null) { |
| ++attributeCount; |
| } |
| if (attrs != null) { |
| attributeCount += attrs.getCount(); |
| } |
| out.putShort(attributeCount); |
| if (value != 0) { |
| out.putShort(cw.newUTF8("ConstantValue")); |
| out.putInt(2).putShort(value); |
| } |
| if ((access & Opcodes.ACC_SYNTHETIC) != 0 |
| && (cw.version & 0xffff) < Opcodes.V1_5) |
| { |
| out.putShort(cw.newUTF8("Synthetic")).putInt(0); |
| } |
| if ((access & Opcodes.ACC_DEPRECATED) != 0) { |
| out.putShort(cw.newUTF8("Deprecated")).putInt(0); |
| } |
| if (ClassReader.SIGNATURES && signature != 0) { |
| out.putShort(cw.newUTF8("Signature")); |
| out.putInt(2).putShort(signature); |
| } |
| if (ClassReader.ANNOTATIONS && anns != null) { |
| out.putShort(cw.newUTF8("RuntimeVisibleAnnotations")); |
| anns.put(out); |
| } |
| if (ClassReader.ANNOTATIONS && ianns != null) { |
| out.putShort(cw.newUTF8("RuntimeInvisibleAnnotations")); |
| ianns.put(out); |
| } |
| if (attrs != null) { |
| attrs.put(cw, null, 0, -1, -1, out); |
| } |
| } |
| } |
