Java Code Examples for com.googlecode.totallylazy.Option#none()

The following examples show how to use com.googlecode.totallylazy.Option#none() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: StaticMemberCompleter.java    From java-repl with Apache License 2.0 6 votes vote down vote up 
private Option<Pair<String, Sequence<String>>> parseExpression(Pair<String, Sequence<String>> expression) {
    Option<Class<?>> expressionClass = evaluator.classFrom(expression.first());

    if (!expressionClass.isEmpty()) {
        return some(expression);
    }

    if (expression.first().contains(".")) {
        final String packagePart = expression.first().substring(0, expression.first().lastIndexOf("."));
        final String classPart = expression.first().substring(expression.first().lastIndexOf(".") + 1);

        return parseExpression(pair(packagePart, expression.second().cons(classPart)));
    }

    return Option.none();

}
Example 2
Source File: Creator.java    From yatspec with Apache License 2.0 5 votes vote down vote up 
public static Option<? extends Class<?>> optionalClass(String name) {
    try {
        return Option.some(Class.forName(name));
    } catch (ClassNotFoundException e) {
        return Option.none();
    }
}
Example 3
Source File: PersistentList.java    From totallylazy with Apache License 2.0 5 votes vote down vote up 
@tailrec
default Option<T> lastOption() {
    if(isEmpty()) return Option.none();
    PersistentList<T> tail = tail();
    if(tail.isEmpty()) return headOption();
    return tail.lastOption();
}
Example 4
Source File: covered_covered_t.java    From coming with MIT License 4 votes vote down vote up 
private Option<java.lang.reflect.Type> typeFor(Expression expression) {
    return (expression instanceof AssignmentWithType)
            ? Option.some(((AssignmentWithType) expression).type())
            : Option.<java.lang.reflect.Type>none();
}
Example 5
Source File: covered_covered_s.java    From coming with MIT License 4 votes vote down vote up 
private Option<java.lang.reflect.Type> typeFor(Expression expression) {
    return (expression instanceof AssignmentWithType)
            ? Option.some(((AssignmentWithType) expression).type())
            : Option.<java.lang.reflect.Type>none();
}
Example 6
Source File: TreeSet.java    From totallylazy with Apache License 2.0 4 votes vote down vote up 
@Override
public Option<T> headOption() {
    return isEmpty()
            ? Option.<T>none()
            : some(head());
}
Example 7
Source File: TreeList.java    From totallylazy with Apache License 2.0 4 votes vote down vote up 
@Override
public Option<T> headOption() {
    return isEmpty()
            ? Option.<T>none()
            : some(head());
}
Example 8
Source File: HashTreeMap.java    From totallylazy with Apache License 2.0 4 votes vote down vote up 
@Override
public Option<Pair<K, V>> headOption() {
    if(isEmpty()) return Option.none();
    return Option.some(head());
}
Example 9
Source File: AbstractSegment.java    From totallylazy with Apache License 2.0 4 votes vote down vote up 
@Override
public Option<T> headOption() {
    return isEmpty()
            ? Option.<T>none()
            : some(head());
}
Example 10
Source File: Evaluator.java    From java-repl with Apache License 2.0 4 votes vote down vote up 
private Option<java.lang.reflect.Type> typeFor(Expression expression) {
    return (expression instanceof AssignmentWithType)
            ? Option.some(((AssignmentWithType) expression).type())
            : Option.<java.lang.reflect.Type>none();
}