/**
* Look up the byte code definition of the named class.
*
* <p>Created: Mar 30, 2004
*
* @param className
* @return - byte code for the class definition.
*/
private byte[] lookupClassData(String className) {
if (isJar(moduleParentLocator)) {
String fileName;
if (LECCMachineConfiguration.generateBytecode()) {
fileName = className.replace('.', '/') + COMPRESSED_CLASS_FILE_EXTENSION;
} else {
fileName = className.replace('.', '/') + CLASS_FILE_EXTENSION;
}
return loadJarData((ProgramResourceLocator.File) moduleParentLocator, fileName);
} else {
ProgramResourceLocator.File fileLocator;
if (LECCMachineConfiguration.generateBytecode()) {
String extension =
className.substring(className.lastIndexOf('.') + 1)
+ CALClassLoader.COMPRESSED_CLASS_FILE_EXTENSION;
fileLocator = ((ProgramResourceLocator.Folder) moduleParentLocator).extendFile(extension);
} else {
String extension =
className.substring(className.lastIndexOf('.') + 1)
+ CALClassLoader.CLASS_FILE_EXTENSION;
fileLocator = ((ProgramResourceLocator.Folder) moduleParentLocator).extendFile(extension);
}
byte[] fileData = loadFileData(fileLocator);
if (LECCMachineConfiguration.generateBytecode()) {
if (fileData == null) {
return null;
}
// uncompress the data..
inflater.reset();
inflater.setInput(fileData);
// Reusing this baos should be ok, since its only other use is in loadFileData(), which
// we've finished calling.
ByteArrayOutputStream baos = threadLocalByteArrayOutputStream.get();
baos.reset();
try {
// Reusing this bytearray should be ok, since its only other use is in loadFileData(),
// which we've finished calling.
byte[] buf = threadLocalByteArray.get();
while (!inflater.finished()) {
int len = inflater.inflate(buf);
baos.write(buf, 0, len);
}
} catch (DataFormatException e) {
// Can't read the compressed class..
// return null;
throw new IllegalStateException("Can't read compressed class: " + className);
}
return baos.toByteArray();
// Not necessary to close the ByteArrayOutputStream.
} else {
// Source generator.
return fileData;
}
}
}
