187 /**
188 * Result object indicating overflow, meaning that there is insufficient
189 * room in the output buffer.
190 */
191 public static final CoderResult OVERFLOW
192 = new CoderResult(CR_OVERFLOW, 0);
193
194 private static abstract class Cache {
195
196 private Map<Integer,WeakReference<CoderResult>> cache = null;
197
198 protected abstract CoderResult create(int len);
199
200 private synchronized CoderResult get(int len) {
201 if (len <= 0)
202 throw new IllegalArgumentException("Non-positive length");
203 Integer k = len;
204 WeakReference<CoderResult> w;
205 CoderResult e = null;
206 if (cache == null) {
207 cache = new HashMap<Integer,WeakReference<CoderResult>>();
208 } else if ((w = cache.get(k)) != null) {
209 e = w.get();
210 }
211 if (e == null) {
212 e = create(len);
213 cache.put(k, new WeakReference<CoderResult>(e));
214 }
215 return e;
216 }
217
218 }
219
220 private static Cache malformedCache
221 = new Cache() {
222 public CoderResult create(int len) {
223 return new CoderResult(CR_MALFORMED, len);
224 }};
225
226 /**
227 * Static factory method that returns the unique object describing a
228 * malformed-input error of the given length.
229 *
230 * @param length
231 * The given length
232 *
233 * @return The requested coder-result object
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187 /**
188 * Result object indicating overflow, meaning that there is insufficient
189 * room in the output buffer.
190 */
191 public static final CoderResult OVERFLOW
192 = new CoderResult(CR_OVERFLOW, 0);
193
194 private static abstract class Cache {
195
196 private Map<Integer,WeakReference<CoderResult>> cache = null;
197
198 protected abstract CoderResult create(int len);
199
200 private synchronized CoderResult get(int len) {
201 if (len <= 0)
202 throw new IllegalArgumentException("Non-positive length");
203 Integer k = len;
204 WeakReference<CoderResult> w;
205 CoderResult e = null;
206 if (cache == null) {
207 cache = new HashMap<>();
208 } else if ((w = cache.get(k)) != null) {
209 e = w.get();
210 }
211 if (e == null) {
212 e = create(len);
213 cache.put(k, new WeakReference<>(e));
214 }
215 return e;
216 }
217
218 }
219
220 private static Cache malformedCache
221 = new Cache() {
222 public CoderResult create(int len) {
223 return new CoderResult(CR_MALFORMED, len);
224 }};
225
226 /**
227 * Static factory method that returns the unique object describing a
228 * malformed-input error of the given length.
229 *
230 * @param length
231 * The given length
232 *
233 * @return The requested coder-result object
|