/*** * ASM: a very small and fast Java bytecode manipulation framework * Copyright (c) 2000-2011 INRIA, France Telecom * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the copyright holders nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF * THE POSSIBILITY OF SUCH DAMAGE. */ package org.simpleflatmapper.ow2asm; /** * Information about an exception handler block. * * @author Eric Bruneton */ class Handler { /** * Beginning of the exception handler's scope (inclusive). */ Label start; /** * End of the exception handler's scope (exclusive). */ Label end; /** * Beginning of the exception handler's code. */ Label handler; /** * Internal name of the type of exceptions handled by this handler, or * <tt>null</tt> to catch any exceptions. */ String desc; /** * Constant pool index of the internal name of the type of exceptions * handled by this handler, or 0 to catch any exceptions. */ int type; /** * Next exception handler block info. */ Handler next; /** * Removes the range between start and end from the given exception * handlers. * * @param h * an exception handler list. * @param start * the start of the range to be removed. * @param end * the end of the range to be removed. Maybe null. * @return the exception handler list with the start-end range removed. */ static Handler remove(Handler h, Label start, Label end) { if (h == null) { return null; } else { h.next = remove(h.next, start, end); } int hstart = h.start.position; int hend = h.end.position; int s = start.position; int e = end == null ? Integer.MAX_VALUE : end.position; // if [hstart,hend[ and [s,e[ intervals intersect... if (s < hend && e > hstart) { if (s <= hstart) { if (e >= hend) { // [hstart,hend[ fully included in [s,e[, h removed h = h.next; } else { // [hstart,hend[ minus [s,e[ = [e,hend[ h.start = end; } } else if (e >= hend) { // [hstart,hend[ minus [s,e[ = [hstart,s[ h.end = start; } else { // [hstart,hend[ minus [s,e[ = [hstart,s[ + [e,hend[ Handler g = new Handler(); g.start = end; g.end = h.end; g.handler = h.handler; g.desc = h.desc; g.type = h.type; g.next = h.next; h.end = start; h.next = g; } } return h; } }