public static MethodInfo createAnnotationMethod(
byte classFileBytes[], int offsets[], int offset) {
MethodInfo methodInfo = new MethodInfo(classFileBytes, offsets, offset);
int attributesCount = methodInfo.u2At(6);
int readOffset = 8;
AnnotationInfo[] annotations = null;
Object defaultValue = null;
for (int i = 0; i < attributesCount; i++) {
// check the name of each attribute
int utf8Offset =
methodInfo.constantPoolOffsets[methodInfo.u2At(readOffset)] - methodInfo.structOffset;
char[] attributeName = methodInfo.utf8At(utf8Offset + 3, methodInfo.u2At(utf8Offset + 1));
if (attributeName.length > 0) {
switch (attributeName[0]) {
case 'A':
if (CharOperation.equals(
attributeName, AttributeNamesConstants.AnnotationDefaultName)) {
// readOffset + 6 so the offset is at the start of the 'member_value' entry
// u2 attribute_name_index + u4 attribute_length = + 6
AnnotationInfo info =
new AnnotationInfo(
methodInfo.reference,
methodInfo.constantPoolOffsets,
readOffset + 6 + methodInfo.structOffset);
defaultValue = info.decodeDefaultValue();
}
break;
case 'S':
if (CharOperation.equals(AttributeNamesConstants.SignatureName, attributeName))
methodInfo.signatureUtf8Offset =
methodInfo.constantPoolOffsets[methodInfo.u2At(readOffset + 6)]
- methodInfo.structOffset;
break;
case 'R':
AnnotationInfo[] methodAnnotations = null;
if (CharOperation.equals(
attributeName, AttributeNamesConstants.RuntimeVisibleAnnotationsName)) {
methodAnnotations = decodeMethodAnnotations(readOffset, true, methodInfo);
} else if (CharOperation.equals(
attributeName, AttributeNamesConstants.RuntimeInvisibleAnnotationsName)) {
methodAnnotations = decodeMethodAnnotations(readOffset, false, methodInfo);
}
if (methodAnnotations != null) {
if (annotations == null) {
annotations = methodAnnotations;
} else {
int length = annotations.length;
AnnotationInfo[] newAnnotations =
new AnnotationInfo[length + methodAnnotations.length];
System.arraycopy(annotations, 0, newAnnotations, 0, length);
System.arraycopy(
methodAnnotations, 0, newAnnotations, length, methodAnnotations.length);
annotations = newAnnotations;
}
}
break;
}
}
readOffset += (6 + methodInfo.u4At(readOffset + 2));
}
methodInfo.attributeBytes = readOffset;
if (defaultValue != null) {
if (annotations != null) {
return new AnnotationMethodInfoWithAnnotations(methodInfo, defaultValue, annotations);
}
return new AnnotationMethodInfo(methodInfo, defaultValue);
}
if (annotations != null) return new MethodInfoWithAnnotations(methodInfo, annotations);
return methodInfo;
}
