Examples of org.codehaus.groovy.runtime.callsite.BooleanClosureWrapper

Package org.codehaus.groovy.runtime.callsite

Examples of org.codehaus.groovy.runtime.callsite.BooleanClosureWrapper

org.codehaus.groovy.runtime.callsite.BooleanClosureWrapper
Helper class for internal use only. This allows to call a {@link Closure} and convert the result to a boolean. It will do this by caching the possible "doCall" as well as the "asBoolean" in CallSiteArray fashion. "asBoolean" will not be called if the result is null or a Boolean. In case of null we return false and in case of a Boolean we simply unbox. This logic is designed after the one present in {@link org.codehaus.groovy.runtime.typehandling.DefaultTypeTransformation#castToBoolean(Object)}. The purpose of this class is to avoid the slow "asBoolean" call in that method. {@link BooleanReturningMethodInvoker} is used for caching. @author Jochen "blackdrag" Theodorou

        private boolean exhausted;
        private E next;


        private TakeWhileIterator(Iterator<E> delegate, Closure condition) {
            this.delegate = delegate;
            this.condition = new BooleanClosureWrapper(condition);
            advance();
        }

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                delegate.remove();
            }
        }


        private void prepare() {
            BooleanClosureWrapper bcw = new BooleanClosureWrapper(condition);
            while (delegate.hasNext()) {
                E next = delegate.next();
                if (!bcw.call(next)) {
                    buffer = next;
                    buffering = true;
                    break;
                }
            }

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     * @param closure the closure predicate used for matching
     * @return true if every iteration of the object matches the closure predicate
     * @since 1.0
     */
    public static boolean every(Object self, Closure closure) {
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        for (Iterator iter = InvokerHelper.asIterator(self); iter.hasNext();) {
            if (!bcw.call(iter.next())) {
                return false;
            }
        }
        return true;
    }

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     * @param closure the closure predicate used for matching
     * @return true if every iteration of the object matches the closure predicate
     * @since 2.3.0
     */
    public static <T> boolean every(Iterator<T> self, @ClosureParams(FirstParam.FirstGenericType.class) Closure closure) {
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        while (self.hasNext()) {
            if (!bcw.call(self.next())) {
                return false;
            }
        }
        return true;
    }

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     * @param closure the 1 or 2 arg Closure predicate used for matching
     * @return true if every entry of the map matches the closure predicate
     * @since 1.5.0
     */
    public static <K, V> boolean every(Map<K, V> self, @ClosureParams(value=MapEntryOrKeyValue.class) Closure closure) {
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        for (Map.Entry<K, V> entry : self.entrySet()) {
            if (!bcw.callForMap(entry)) {
                return false;
            }
        }
        return true;
    }

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     * @param closure the closure predicate used for matching
     * @return true   if any iteration for the object matches the closure predicate
     * @since 1.0
     */
    public static boolean any(Object self, Closure closure) {
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        for (Iterator iter = InvokerHelper.asIterator(self); iter.hasNext();) {
            if (bcw.call(iter.next())) return true;
        }
        return false;
    }

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     * @param closure the closure predicate used for matching
     * @return true   if any iteration for the object matches the closure predicate
     * @since 1.0
     */
    public static <T> boolean any(Iterator<T> self, @ClosureParams(FirstParam.FirstGenericType.class) Closure closure) {
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        for (Iterator iter = self; iter.hasNext();) {
            if (bcw.call(iter.next())) return true;
        }
        return false;
    }

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     * @param closure the closure predicate used for matching
     * @return true   if any iteration for the object matches the closure predicate
     * @since 1.0
     */
    public static <T> boolean any(Iterable<T> self, @ClosureParams(FirstParam.FirstGenericType.class) Closure closure) {
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        for (Iterator<T> iter = self.iterator(); iter.hasNext();) {
            if (bcw.call(iter.next())) return true;
        }
        return false;
    }

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     * @param closure the 1 or 2 arg closure predicate used for matching
     * @return true if any entry in the map matches the closure predicate
     * @since 1.5.0
     */
    public static <K, V> boolean any(Map<K, V> self, @ClosureParams(MapEntryOrKeyValue.class) Closure<?> closure) {
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        for (Map.Entry<K, V> entry : self.entrySet()) {
            if (bcw.callForMap(entry)) {
                return true;
            }
        }
        return false;
    }

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     * @return the number of occurrences
     * @since 1.8.0
     */
    public static <T> Number count(Iterator<T> self, @ClosureParams(FirstParam.FirstGenericType.class) Closure closure) {
        long answer = 0;
        BooleanClosureWrapper bcw = new BooleanClosureWrapper(closure);
        while (self.hasNext()) {
            if (bcw.call(self.next())) {
                ++answer;
            }
        }
        // for b/c with Java return an int if we can
        if (answer <= Integer.MAX_VALUE) return (int) answer;

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