mockit.external.asm4.FieldWriter Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jmockit Show documentation
Show all versions of jmockit Show documentation
JMockit is a Java toolkit for developer (unit/integration) testing.
It contains mocking APIs and other tools, supporting both JUnit and TestNG.
The mocking APIs allow all kinds of Java code, without testability restrictions, to be tested
in isolation from selected dependencies.
/***
* 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 mockit.external.asm4;
/**
* An {@link FieldVisitor} that generates Java fields in bytecode form.
*
* @author Eric Bruneton
*/
final class FieldWriter extends FieldVisitor {
/**
* 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 null.
*/
private AnnotationWriter anns;
/**
* The runtime invisible annotations of this field. May be null.
*/
private AnnotationWriter ianns;
/**
* The non standard attributes of this field. May be null.
*/
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 null.
* @param value the field's constant value. May be null.
*/
FieldWriter(
final ClassWriter cw,
final int access,
final String name,
final String desc,
final String signature,
final Object value)
{
super(Opcodes.ASM4);
if (cw.firstField == null) {
cw.firstField = this;
} else {
cw.lastField.fv = 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 abstract class
// ------------------------------------------------------------------------
@Override
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;
}
@Override
public void visitAttribute(final Attribute attr) {
attr.next = attrs;
attrs = attr;
}
@Override
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 || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0))
{
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) {
int mask = Opcodes.ACC_DEPRECATED
| ClassWriter.ACC_SYNTHETIC_ATTRIBUTE
| ((access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) / (ClassWriter.ACC_SYNTHETIC_ATTRIBUTE / Opcodes.ACC_SYNTHETIC));
out.putShort(access & ~mask).putShort(name).putShort(desc);
int attributeCount = 0;
if (value != 0) {
++attributeCount;
}
if ((access & Opcodes.ACC_SYNTHETIC) != 0
&& ((cw.version & 0xFFFF) < Opcodes.V1_5 || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0))
{
++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 || (access & ClassWriter.ACC_SYNTHETIC_ATTRIBUTE) != 0))
{
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);
}
}
}