protected void addTimeStamp(ClassNode node) {
if (node.getDeclaredField(Verifier.__TIMESTAMP)
== null) { // in case if verifier visited the call already
FieldNode timeTagField =
new FieldNode(
Verifier.__TIMESTAMP,
ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC,
ClassHelper.long_TYPE,
// "",
node,
new ConstantExpression(System.currentTimeMillis()));
// alternatively, FieldNode timeTagField = SourceUnit.createFieldNode("public static final
// long __timeStamp = " + System.currentTimeMillis() + "L");
timeTagField.setSynthetic(true);
node.addField(timeTagField);
timeTagField =
new FieldNode(
Verifier.__TIMESTAMP__ + String.valueOf(System.currentTimeMillis()),
ACC_PUBLIC | ACC_STATIC | ACC_SYNTHETIC,
ClassHelper.long_TYPE,
// "",
node,
new ConstantExpression((long) 0));
// alternatively, FieldNode timeTagField = SourceUnit.createFieldNode("public static final
// long __timeStamp = " + System.currentTimeMillis() + "L");
timeTagField.setSynthetic(true);
node.addField(timeTagField);
}
}
public InnerLoader(GroovyClassLoader delegate) {
super(delegate);
this.delegate = delegate;
timeStamp = System.currentTimeMillis();
}
/**
* 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;
}
/**
* Parses the given text into a Java class capable of being run
*
* @param text the text of the script/class to parse
* @return the main class defined in the given script
*/
public Class parseClass(String text) throws CompilationFailedException {
return parseClass(
text, "script" + System.currentTimeMillis() + Math.abs(text.hashCode()) + ".groovy");
}
