private static int checkSingleArgument(
String subroutineName,
Class expectedType,
ArgumentsList arguments,
List<LispObject> args,
int argsCounter,
int i) {
try {
if (!(expectedType.isInstance(args.get(argsCounter)))) {
if (expectedType.equals(LispList.class)
&& args.get(argsCounter).equals(LispSymbol.ourNil)) {
arguments.setValue(i, LispList.list());
return argsCounter + 1;
}
if (expectedType.equals(LispSymbol.class)
&& args.get(argsCounter).equals(LispSymbol.ourNil)) {
arguments.setValue(i, LispSymbol.ourNil);
return argsCounter + 1;
}
if (arguments.isOptional(i)) return -1;
throw new WrongTypeArgumentException(expectedType.getSimpleName(), args.get(argsCounter));
}
arguments.setValue(i, args.get(argsCounter));
return argsCounter + 1;
} catch (IndexOutOfBoundsException e) {
if (arguments.isOptional(i)) return -1;
throw new WrongNumberOfArgumentsException(subroutineName, i);
}
}
private static int checkParameterizedType(
String subroutineName,
ParameterizedType expectedType,
ArgumentsList arguments,
List<LispObject> args,
int argsCounter,
int i) {
Type rawType = expectedType.getRawType();
Type expectedTypeArguments = expectedType.getActualTypeArguments()[0];
try {
if (((Class) rawType).isInstance(args.get(argsCounter))) {
Type actualTypeArguments =
((ParameterizedType) (Type) args.get(argsCounter).getClass())
.getActualTypeArguments()[0];
if (!expectedTypeArguments.equals(actualTypeArguments)) {
throw new WrongTypeArgumentException(
((Class) rawType).getSimpleName()
+ "<"
+ ((Class) expectedTypeArguments).getSimpleName()
+ ">",
args.get(argsCounter));
}
arguments.setValue(i, args.get(argsCounter));
return argsCounter + 1;
} else {
if (arguments.isOptional(i)) return -1;
throw new WrongTypeArgumentException(expectedType.toString(), args.get(argsCounter));
}
} catch (IndexOutOfBoundsException e) {
if (arguments.isOptional(i)) return -1;
throw new WrongNumberOfArgumentsException(subroutineName, i);
}
}