PatternItr Class — netty Architecture

Source Code

microbench/src/main/java/io/netty/buffer/AllocationPatternSimulator.java lines 664–697

    private static final class PatternItr {
        private final int[] pattern;
        private int index;
        private boolean hasData;
        private int size;
        private int frequency;

        PatternItr(int[] pattern) {
            this.pattern = pattern;
        }

        public boolean next() {
            if (index < pattern.length) {
                size = pattern[index++];
                frequency = pattern[index++];
                return hasData = true;
            }
            return hasData = false;
        }

        public int size() {
            if (!hasData) {
                throw new IllegalStateException();
            }
            return size;
        }

        public int frequency() {
            if (!hasData) {
                throw new IllegalStateException();
            }
            return frequency;
        }
    }