public void generateClass(ClassVisitor v) {
ClassEmitter ce = new ClassEmitter(v);
Method newInstance = ReflectUtils.findNewInstance(keyInterface);
if (!newInstance.getReturnType().equals(Object.class)) {
throw new IllegalArgumentException("newInstance method must return Object");
}
Type[] parameterTypes = TypeUtils.getTypes(newInstance.getParameterTypes());
ce.begin_class(
Constants.V1_2,
Constants.ACC_PUBLIC,
getClassName(),
KEY_FACTORY,
new Type[] {Type.getType(keyInterface)},
Constants.SOURCE_FILE);
EmitUtils.null_constructor(ce);
EmitUtils.factory_method(ce, ReflectUtils.getSignature(newInstance));
int seed = 0;
CodeEmitter e =
ce.begin_method(Constants.ACC_PUBLIC, TypeUtils.parseConstructor(parameterTypes), null);
e.load_this();
e.super_invoke_constructor();
e.load_this();
for (int i = 0; i < parameterTypes.length; i++) {
seed += parameterTypes[i].hashCode();
ce.declare_field(
Constants.ACC_PRIVATE | Constants.ACC_FINAL, getFieldName(i), parameterTypes[i], null);
e.dup();
e.load_arg(i);
e.putfield(getFieldName(i));
}
e.return_value();
e.end_method();
// hash code
e = ce.begin_method(Constants.ACC_PUBLIC, HASH_CODE, null);
int hc = (constant != 0) ? constant : PRIMES[(int) (Math.abs(seed) % PRIMES.length)];
int hm = (multiplier != 0) ? multiplier : PRIMES[(int) (Math.abs(seed * 13) % PRIMES.length)];
e.push(hc);
for (int i = 0; i < parameterTypes.length; i++) {
e.load_this();
e.getfield(getFieldName(i));
EmitUtils.hash_code(e, parameterTypes[i], hm, customizer);
}
e.return_value();
e.end_method();
// equals
e = ce.begin_method(Constants.ACC_PUBLIC, EQUALS, null);
Label fail = e.make_label();
e.load_arg(0);
e.instance_of_this();
e.if_jump(e.EQ, fail);
for (int i = 0; i < parameterTypes.length; i++) {
e.load_this();
e.getfield(getFieldName(i));
e.load_arg(0);
e.checkcast_this();
e.getfield(getFieldName(i));
EmitUtils.not_equals(e, parameterTypes[i], fail, customizer);
}
e.push(1);
e.return_value();
e.mark(fail);
e.push(0);
e.return_value();
e.end_method();
// toString
e = ce.begin_method(Constants.ACC_PUBLIC, TO_STRING, null);
e.new_instance(Constants.TYPE_STRING_BUFFER);
e.dup();
e.invoke_constructor(Constants.TYPE_STRING_BUFFER);
for (int i = 0; i < parameterTypes.length; i++) {
if (i > 0) {
e.push(", ");
e.invoke_virtual(Constants.TYPE_STRING_BUFFER, APPEND_STRING);
}
e.load_this();
e.getfield(getFieldName(i));
EmitUtils.append_string(e, parameterTypes[i], EmitUtils.DEFAULT_DELIMITERS, customizer);
}
e.invoke_virtual(Constants.TYPE_STRING_BUFFER, TO_STRING);
e.return_value();
e.end_method();
ce.end_class();
}
