/**
* Convert the object representation of the class into its class file format.
*
* @exception IOException error writing the class
*/
public ByteArray getFileFormat() throws IOException {
int classFileSize = 4 + (10 * 2);
classFileSize += cptEstimatedSize;
if (interfaces != null) classFileSize += (interfaces.length * 2);
if (field_info != null) classFileSize += field_info.classFileSize();
if (method_info != null) classFileSize += method_info.classFileSize();
if (attribute_info != null) classFileSize += attribute_info.classFileSize();
ClassFormatOutput cfo = new ClassFormatOutput(classFileSize + 200);
put(cfo);
return new ByteArray(cfo.getData(), 0, cfo.size());
}
private void put(ClassFormatOutput out) throws IOException {
/* Write out the header */
out.putU4(VMDescriptor.JAVA_CLASS_FORMAT_MAGIC);
out.putU2(minor_version);
out.putU2(major_version);
// special case checking that the number of constant
// pool entries does not exceed the limit of 65535
// (as it is stored as a U2).
// Special case to allow somewhat easier debugging
// of the resulting failure.
out.putU2("constant_pool", cptEntries.size());
cptPut(out);
out.putU2(access_flags);
out.putU2(this_class);
out.putU2(super_class);
if (interfaces != null) {
int ilen = interfaces.length;
out.putU2(ilen);
for (int i = 0; i < ilen; i++) {
out.putU2(interfaces[i]);
}
} else {
out.putU2(0);
}
if (field_info != null) {
out.putU2(field_info.size());
field_info.put(out);
} else {
out.putU2(0);
}
if (method_info != null) {
out.putU2(method_info.size());
method_info.put(out);
} else {
out.putU2(0);
}
if (attribute_info != null) {
out.putU2(attribute_info.size());
attribute_info.put(out);
} else {
out.putU2(0);
}
}
