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JMockit is a Java toolkit for automated developer testing.
It contains APIs for the creation of the objects to be tested, for mocking dependencies, and for faking external
APIs; JUnit (4 & 5) and TestNG test runners are supported.
It also contains an advanced code coverage tool.
/*
* 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 mockit.external.asm;
import javax.annotation.*;
/**
* A {@link FieldVisitor} that generates Java fields in bytecode form.
*/
final class FieldWriter extends FieldVisitor
{
/**
* The class writer to which this field must be added.
*/
@Nonnull 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 field.
*/
@Nonnegative private final int name;
/**
* The index of the constant pool item that contains the descriptor of this field.
*/
@Nonnegative private final int desc;
/**
* The index of the constant pool item that contains the signature of this field.
*/
@Nonnegative private final int signature;
/**
* The index of the constant pool item that contains the constant value of this field.
*/
@Nonnegative private final int value;
/**
* 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 JavaType}).
* @param signature the field's signature.
* @param value the field's constant value.
*/
FieldWriter(
@Nonnull ClassWriter cw, int access, @Nonnull String name, @Nonnull String desc, @Nullable String signature,
@Nullable Object value
) {
this.cw = cw;
cp = cw.cp;
this.access = access;
this.name = cp.newUTF8(name);
this.desc = cp.newUTF8(desc);
this.signature = signature == null ? 0 : cp.newUTF8(signature);
this.value = value == null ? 0 : cp.newConstItem(value).index;
}
// ------------------------------------------------------------------------
// Implementation of the FieldVisitor base class
// ------------------------------------------------------------------------
@Nonnull @Override
public AnnotationVisitor visitAnnotation(@Nonnull String desc) {
return addAnnotation(desc);
}
// ------------------------------------------------------------------------
// Utility methods
// ------------------------------------------------------------------------
/**
* Returns the size of this field.
*/
@Nonnegative
int getSize() {
int size = 8;
if (value != 0) {
cp.newUTF8("ConstantValue");
size += 8;
}
if (isSynthetic()) {
cp.newUTF8("Synthetic");
size += 6;
}
if (Access.isDeprecated(access)) {
cp.newUTF8("Deprecated");
size += 6;
}
if (signature != 0) {
cp.newUTF8("Signature");
size += 8;
}
size += getAnnotationsSize();
return size;
}
private boolean isSynthetic() {
return cw.isSynthetic(access);
}
/**
* Puts the content of this field into the given byte vector.
*
* @param out where the content of this field must be put.
*/
void put(@Nonnull ByteVector out) {
int accessFlag = Access.computeFlag(access, 0);
out.putShort(accessFlag);
out.putShort(name);
out.putShort(desc);
int attributeCount = 0;
if (value != 0) {
++attributeCount;
}
boolean synthetic = isSynthetic();
if (synthetic) {
++attributeCount;
}
boolean deprecated = Access.isDeprecated(access);
if (deprecated) {
++attributeCount;
}
if (signature != 0) {
++attributeCount;
}
if (annotations != null) {
++attributeCount;
}
out.putShort(attributeCount);
if (value != 0) {
out.putShort(cp.newUTF8("ConstantValue"));
out.putInt(2).putShort(value);
}
if (synthetic) {
out.putShort(cp.newUTF8("Synthetic")).putInt(0);
}
if (deprecated) {
out.putShort(cp.newUTF8("Deprecated")).putInt(0);
}
if (signature != 0) {
out.putShort(cp.newUTF8("Signature"));
out.putInt(2).putShort(signature);
}
putAnnotations(out);
}
}