use of org.mozilla.javascript.annotations.JSGetter in project hackpad by dropbox.
the class ScriptableObject method buildClassCtor.
static <T extends Scriptable> BaseFunction buildClassCtor(Scriptable scope, Class<T> clazz, boolean sealed, boolean mapInheritance) throws IllegalAccessException, InstantiationException, InvocationTargetException {
Method[] methods = FunctionObject.getMethodList(clazz);
for (int i = 0; i < methods.length; i++) {
Method method = methods[i];
if (!method.getName().equals("init"))
continue;
Class<?>[] parmTypes = method.getParameterTypes();
if (parmTypes.length == 3 && parmTypes[0] == ScriptRuntime.ContextClass && parmTypes[1] == ScriptRuntime.ScriptableClass && parmTypes[2] == Boolean.TYPE && Modifier.isStatic(method.getModifiers())) {
Object[] args = { Context.getContext(), scope, sealed ? Boolean.TRUE : Boolean.FALSE };
method.invoke(null, args);
return null;
}
if (parmTypes.length == 1 && parmTypes[0] == ScriptRuntime.ScriptableClass && Modifier.isStatic(method.getModifiers())) {
Object[] args = { scope };
method.invoke(null, args);
return null;
}
}
// If we got here, there isn't an "init" method with the right
// parameter types.
Constructor<?>[] ctors = clazz.getConstructors();
Constructor<?> protoCtor = null;
for (int i = 0; i < ctors.length; i++) {
if (ctors[i].getParameterTypes().length == 0) {
protoCtor = ctors[i];
break;
}
}
if (protoCtor == null) {
throw Context.reportRuntimeError1("msg.zero.arg.ctor", clazz.getName());
}
Scriptable proto = (Scriptable) protoCtor.newInstance(ScriptRuntime.emptyArgs);
String className = proto.getClassName();
// Set the prototype's prototype, trying to map Java inheritance to JS
// prototype-based inheritance if requested to do so.
Scriptable superProto = null;
if (mapInheritance) {
Class<? super T> superClass = clazz.getSuperclass();
if (ScriptRuntime.ScriptableClass.isAssignableFrom(superClass) && !Modifier.isAbstract(superClass.getModifiers())) {
Class<? extends Scriptable> superScriptable = extendsScriptable(superClass);
String name = ScriptableObject.defineClass(scope, superScriptable, sealed, mapInheritance);
if (name != null) {
superProto = ScriptableObject.getClassPrototype(scope, name);
}
}
}
if (superProto == null) {
superProto = ScriptableObject.getObjectPrototype(scope);
}
proto.setPrototype(superProto);
// Find out whether there are any methods that begin with
// "js". If so, then only methods that begin with special
// prefixes will be defined as JavaScript entities.
final String functionPrefix = "jsFunction_";
final String staticFunctionPrefix = "jsStaticFunction_";
final String getterPrefix = "jsGet_";
final String setterPrefix = "jsSet_";
final String ctorName = "jsConstructor";
Member ctorMember = findAnnotatedMember(methods, JSConstructor.class);
if (ctorMember == null) {
ctorMember = findAnnotatedMember(ctors, JSConstructor.class);
}
if (ctorMember == null) {
ctorMember = FunctionObject.findSingleMethod(methods, ctorName);
}
if (ctorMember == null) {
if (ctors.length == 1) {
ctorMember = ctors[0];
} else if (ctors.length == 2) {
if (ctors[0].getParameterTypes().length == 0)
ctorMember = ctors[1];
else if (ctors[1].getParameterTypes().length == 0)
ctorMember = ctors[0];
}
if (ctorMember == null) {
throw Context.reportRuntimeError1("msg.ctor.multiple.parms", clazz.getName());
}
}
FunctionObject ctor = new FunctionObject(className, ctorMember, scope);
if (ctor.isVarArgsMethod()) {
throw Context.reportRuntimeError1("msg.varargs.ctor", ctorMember.getName());
}
ctor.initAsConstructor(scope, proto);
Method finishInit = null;
HashSet<String> staticNames = new HashSet<String>(), instanceNames = new HashSet<String>();
for (Method method : methods) {
if (method == ctorMember) {
continue;
}
String name = method.getName();
if (name.equals("finishInit")) {
Class<?>[] parmTypes = method.getParameterTypes();
if (parmTypes.length == 3 && parmTypes[0] == ScriptRuntime.ScriptableClass && parmTypes[1] == FunctionObject.class && parmTypes[2] == ScriptRuntime.ScriptableClass && Modifier.isStatic(method.getModifiers())) {
finishInit = method;
continue;
}
}
// ignore any compiler generated methods.
if (name.indexOf('$') != -1)
continue;
if (name.equals(ctorName))
continue;
Annotation annotation = null;
String prefix = null;
if (method.isAnnotationPresent(JSFunction.class)) {
annotation = method.getAnnotation(JSFunction.class);
} else if (method.isAnnotationPresent(JSStaticFunction.class)) {
annotation = method.getAnnotation(JSStaticFunction.class);
} else if (method.isAnnotationPresent(JSGetter.class)) {
annotation = method.getAnnotation(JSGetter.class);
} else if (method.isAnnotationPresent(JSSetter.class)) {
continue;
}
if (annotation == null) {
if (name.startsWith(functionPrefix)) {
prefix = functionPrefix;
} else if (name.startsWith(staticFunctionPrefix)) {
prefix = staticFunctionPrefix;
} else if (name.startsWith(getterPrefix)) {
prefix = getterPrefix;
} else if (annotation == null) {
// we deal with that when we see the getter
continue;
}
}
boolean isStatic = annotation instanceof JSStaticFunction || prefix == staticFunctionPrefix;
HashSet<String> names = isStatic ? staticNames : instanceNames;
String propName = getPropertyName(name, prefix, annotation);
if (names.contains(propName)) {
throw Context.reportRuntimeError2("duplicate.defineClass.name", name, propName);
}
names.add(propName);
name = propName;
if (annotation instanceof JSGetter || prefix == getterPrefix) {
if (!(proto instanceof ScriptableObject)) {
throw Context.reportRuntimeError2("msg.extend.scriptable", proto.getClass().toString(), name);
}
Method setter = findSetterMethod(methods, name, setterPrefix);
int attr = ScriptableObject.PERMANENT | ScriptableObject.DONTENUM | (setter != null ? 0 : ScriptableObject.READONLY);
((ScriptableObject) proto).defineProperty(name, null, method, setter, attr);
continue;
}
if (isStatic && !Modifier.isStatic(method.getModifiers())) {
throw Context.reportRuntimeError("jsStaticFunction must be used with static method.");
}
FunctionObject f = new FunctionObject(name, method, proto);
if (f.isVarArgsConstructor()) {
throw Context.reportRuntimeError1("msg.varargs.fun", ctorMember.getName());
}
defineProperty(isStatic ? ctor : proto, name, f, DONTENUM);
if (sealed) {
f.sealObject();
}
}
// Call user code to complete initialization if necessary.
if (finishInit != null) {
Object[] finishArgs = { scope, ctor, proto };
finishInit.invoke(null, finishArgs);
}
// Seal the object if necessary.
if (sealed) {
ctor.sealObject();
if (proto instanceof ScriptableObject) {
((ScriptableObject) proto).sealObject();
}
}
return ctor;
}
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