public static ClassFile loadClass(string className,StackFrame frame)
{
if (classCache[className] == null){
// try {
string classFileName = className + ".class";
string path = classFileName;
if (log.IsDebugEnabled) log.Debug(String.Format("Trying {0}",path));
if (!File.Exists(path)){
path = "openjdk/" + path;
if (log.IsDebugEnabled) log.DebugFormat("Trying {0}",path);
}
BinaryReader reader = new BinaryReader(File.OpenRead(path),System.Text.Encoding.UTF8);
ClassFile classFile = new ClassFile(reader);
classCache[className] = classFile;
string superClassName = classFile.GetSuperClassName();
if (superClassName != null){
ClassFile superClass = loadClass(superClassName);
classFile.SetSuperClassFile(superClass);
}
bool initialized = doInitialize(classFile,frame);
if (! initialized){
throw new ToyVMException("Unable to initialize " + classFile,frame);
}
// } catch (ToyVMException e){
// throw e;
// } catch (Exception e){
// if (! (e is ToyVMException)){
// throw new ToyVMException("Error",e,frame);
// }
// }
if (ClassLoadedEvent != null){
ClassLoadedEvent(className);
}
}
return (ClassFile) classCache[className];
}
protected static bool doInitialize(ClassFile theClass,StackFrame frame)
{
if (! theClass.isInitialized()){
if (log.IsDebugEnabled) log.Debug(String.Format("Initializing {0}",theClass));
string superClassName = theClass.GetSuperClassName();
if (superClassName != null) { // got to the top
if (log.IsDebugEnabled) log.Debug(String.Format("Need to initialize {0}",superClassName));
ClassFile superClass = (ClassFile) classCache[superClassName];
if (! doInitialize(superClass,frame)){
return false;
}
}
// TODO: According to the spec, this should be in "textual order"
if (log.IsDebugEnabled) log.DebugFormat("Executing static initializer");
theClass.staticInitialize(frame);
// now we can initialize the original class
if (log.IsDebugEnabled) log.DebugFormat("Loading fields...");
FieldInfo[] fields = theClass.getFields();
if (fields != null){
foreach (FieldInfo field in fields){
if (field == null) {
throw new Exception("FIeld is null?");
}
if (field.isStatic()){
if (log.IsDebugEnabled) log.DebugFormat("Static initializing {0}",field);
}
}
}
theClass.setInitialized(true);
return true;
}
return true;
}