233                 || Pattern.matches(
234                         "jdk/internal/org/objectweb/asm/util/Check" + member + "Adapter(\\$.*)?", internalName);
235     }
236 
237     static void checkIsPreview(final InputStream classInputStream) {
238         if (classInputStream == null) {
239             throw new IllegalStateException("Bytecode not available, can't check class version");
240         }
241         int minorVersion;
242         try (DataInputStream callerClassStream = new DataInputStream(classInputStream); ) {
243             callerClassStream.readInt();
244             minorVersion = callerClassStream.readUnsignedShort();
245         } catch (IOException ioe) {
246             throw new IllegalStateException("I/O error, can't check class version", ioe);
247         }
248         if (minorVersion != 0xFFFF) {
249             throw new IllegalStateException(
250                     "ASM9_EXPERIMENTAL can only be used by classes compiled with --enable-preview");
251         }
252     }
253 }
254 

233                 || Pattern.matches(
234                         "jdk/internal/org/objectweb/asm/util/Check" + member + "Adapter(\\$.*)?", internalName);
235     }
236 
237     static void checkIsPreview(final InputStream classInputStream) {
238         if (classInputStream == null) {
239             throw new IllegalStateException("Bytecode not available, can't check class version");
240         }
241         int minorVersion;
242         try (DataInputStream callerClassStream = new DataInputStream(classInputStream); ) {
243             callerClassStream.readInt();
244             minorVersion = callerClassStream.readUnsignedShort();
245         } catch (IOException ioe) {
246             throw new IllegalStateException("I/O error, can't check class version", ioe);
247         }
248         if (minorVersion != 0xFFFF) {
249             throw new IllegalStateException(
250                     "ASM9_EXPERIMENTAL can only be used by classes compiled with --enable-preview");
251         }
252     }
253 }