private Class doParseClass(GroovyCodeSource codeSource) {
validate(codeSource);
Class answer; // Was neither already loaded nor compiling, so compile and add to cache.
CompilationUnit unit = createCompilationUnit(config, codeSource.getCodeSource());
if (recompile != null && recompile || recompile == null && config.getRecompileGroovySource()) {
unit.addFirstPhaseOperation(
TimestampAdder.INSTANCE, CompilePhase.CLASS_GENERATION.getPhaseNumber());
}
SourceUnit su = null;
File file = codeSource.getFile();
if (file != null) {
su = unit.addSource(file);
} else {
URL url = codeSource.getURL();
if (url != null) {
su = unit.addSource(url);
} else {
su = unit.addSource(codeSource.getName(), codeSource.getScriptText());
}
}
ClassCollector collector = createCollector(unit, su);
unit.setClassgenCallback(collector);
int goalPhase = Phases.CLASS_GENERATION;
if (config != null && config.getTargetDirectory() != null) goalPhase = Phases.OUTPUT;
unit.compile(goalPhase);
answer = collector.generatedClass;
String mainClass = su.getAST().getMainClassName();
for (Object o : collector.getLoadedClasses()) {
Class clazz = (Class) o;
String clazzName = clazz.getName();
definePackage(clazzName);
setClassCacheEntry(clazz);
if (clazzName.equals(mainClass)) answer = clazz;
}
return answer;
}
/**
* loads a class from a file or a parent classloader.
*
* @param name of the class to be loaded
* @param lookupScriptFiles if false no lookup at files is done at all
* @param preferClassOverScript if true the file lookup is only done if there is no class
* @param resolve see {@link java.lang.ClassLoader#loadClass(java.lang.String, boolean)}
* @return the class found or the class created from a file lookup
* @throws ClassNotFoundException if the class could not be found
* @throws CompilationFailedException if the source file could not be compiled
*/
public Class loadClass(
final String name, boolean lookupScriptFiles, boolean preferClassOverScript, boolean resolve)
throws ClassNotFoundException, CompilationFailedException {
// look into cache
Class cls = getClassCacheEntry(name);
// enable recompilation?
boolean recompile = isRecompilable(cls);
if (!recompile) return cls;
// try parent loader
ClassNotFoundException last = null;
try {
Class parentClassLoaderClass = super.loadClass(name, resolve);
// always return if the parent loader was successful
if (cls != parentClassLoaderClass) return parentClassLoaderClass;
} catch (ClassNotFoundException cnfe) {
last = cnfe;
} catch (NoClassDefFoundError ncdfe) {
if (ncdfe.getMessage().indexOf("wrong name") > 0) {
last = new ClassNotFoundException(name);
} else {
throw ncdfe;
}
}
// check security manager
SecurityManager sm = System.getSecurityManager();
if (sm != null) {
String className = name.replace('/', '.');
int i = className.lastIndexOf('.');
// no checks on the sun.reflect classes for reflection speed-up
// in particular ConstructorAccessorImpl, MethodAccessorImpl, FieldAccessorImpl and
// SerializationConstructorAccessorImpl
// which are generated at runtime by the JDK
if (i != -1 && !className.startsWith("sun.reflect.")) {
sm.checkPackageAccess(className.substring(0, i));
}
}
// prefer class if no recompilation
if (cls != null && preferClassOverScript) return cls;
// at this point the loading from a parent loader failed
// and we want to recompile if needed.
if (lookupScriptFiles) {
// try groovy file
try {
// check if recompilation already happened.
final Class classCacheEntry = getClassCacheEntry(name);
if (classCacheEntry != cls) return classCacheEntry;
URL source = resourceLoader.loadGroovySource(name);
// if recompilation fails, we want cls==null
Class oldClass = cls;
cls = null;
cls = recompile(source, name, oldClass);
} catch (IOException ioe) {
last = new ClassNotFoundException("IOException while opening groovy source: " + name, ioe);
} finally {
if (cls == null) {
removeClassCacheEntry(name);
} else {
setClassCacheEntry(cls);
}
}
}
if (cls == null) {
// no class found, there should have been an exception before now
if (last == null) throw new AssertionError(true);
throw last;
}
return cls;
}