private void installParameters(boolean isStatic, String className) throws TypeException {
Type type;
// add a binding for the helper so we can call builtin static methods
type = typeGroup.create(helperClass.getName());
Binding ruleBinding = bindings.lookup("$$");
if (ruleBinding != null) {
ruleBinding.setType(type);
} else {
bindings.append(new Binding(this, "$$", type));
}
if (!isStatic) {
Binding recipientBinding = bindings.lookup("$0");
if (recipientBinding != null) {
type = typeGroup.create(className);
if (type.isUndefined()) {
throw new TypeException(
"Rule.installParameters : Rule " + name + " unable to load class " + className);
}
recipientBinding.setType(type);
}
}
String returnTypeName = Type.parseMethodReturnType(triggerDescriptor);
returnType = typeGroup.create(returnTypeName);
Iterator<Binding> iterator = bindings.iterator();
while (iterator.hasNext()) {
Binding binding = iterator.next();
// these bindings are typed via the descriptor installed during trigger injection
// note that the return type has to be done this way because it may represent the
// trigger method return type or the invoke method return type
if (binding.isParam() || binding.isLocalVar() || binding.isReturn()) {
String typeName = binding.getDescriptor();
String[] typeAndArrayBounds = typeName.split("\\[");
Type baseType = typeGroup.create(typeAndArrayBounds[0]);
Type fullType = baseType;
if (baseType.isUndefined()) {
throw new TypeException(
"Rule.installParameters : Rule " + name + " unable to load class " + baseType);
}
for (int i = 1; i < typeAndArrayBounds.length; i++) {
fullType = typeGroup.createArray(fullType);
}
binding.setType(fullType);
} else if (binding.isThrowable()) {
// TODO -- enable a more precise specification of the throwable type
// we need to be able to obtain the type descriptor for the throw operation
binding.setType(typeGroup.ensureType(Throwable.class));
} else if (binding.isParamCount()) {
binding.setType(Type.I);
} else if (binding.isParamArray() || binding.isInvokeParamArray()) {
binding.setType(Type.OBJECT.arrayType());
} else if (binding.isTriggerClass() || binding.isTriggerMethod()) {
binding.setType(Type.STRING);
}
}
}
