public Method lookupJavaMethod(
IEvaluator<Result<IValue>> eval,
FunctionDeclaration func,
Environment env,
boolean hasReflectiveAccess) {
if (!func.isAbstract()) {
throw new NonAbstractJavaFunction(func);
}
String className = getClassName(func);
String name = Names.name(func.getSignature().getName());
if (className.length() == 0) { // TODO: Can this ever be thrown since the Class instance has
// already been identified via the javaClass tag.
throw new MissingTag(JAVA_CLASS_TAG, func);
}
for (ClassLoader loader : loaders) {
try {
Class<?> clazz = loader.loadClass(className);
Parameters parameters = func.getSignature().getParameters();
Class<?>[] javaTypes = getJavaTypes(parameters, env, hasReflectiveAccess);
try {
Method m;
if (javaTypes.length > 0) { // non-void
m = clazz.getMethod(name, javaTypes);
} else {
m = clazz.getMethod(name);
}
return m;
} catch (SecurityException e) {
throw RuntimeExceptionFactory.permissionDenied(
vf.string(e.getMessage()), eval.getCurrentAST(), eval.getStackTrace());
} catch (NoSuchMethodException e) {
throw new UndeclaredJavaMethod(e.getMessage(), func);
}
} catch (ClassNotFoundException e) {
continue;
}
}
throw new UndeclaredJavaMethod(className + "." + name, func);
}
private String getClassName(FunctionDeclaration declaration) {
Tags tags = declaration.getTags();
if (tags.hasTags()) {
for (Tag tag : tags.getTags()) {
if (Names.name(tag.getName()).equals(JAVA_CLASS_TAG)) {
if (tag.hasContents()) {
String contents = ((TagString.Lexical) tag.getContents()).getString();
if (contents.length() > 2 && contents.startsWith("{")) {
contents = contents.substring(1, contents.length() - 1);
}
return contents;
}
}
}
}
return "";
}