0N/A/*
2362N/A * Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
0N/A * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
0N/A *
0N/A * This code is free software; you can redistribute it and/or modify it
0N/A * under the terms of the GNU General Public License version 2 only, as
2362N/A * published by the Free Software Foundation. Oracle designates this
0N/A * particular file as subject to the "Classpath" exception as provided
2362N/A * by Oracle in the LICENSE file that accompanied this code.
0N/A *
0N/A * This code is distributed in the hope that it will be useful, but WITHOUT
0N/A * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
0N/A * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
0N/A * version 2 for more details (a copy is included in the LICENSE file that
0N/A * accompanied this code).
0N/A *
0N/A * You should have received a copy of the GNU General Public License version
0N/A * 2 along with this work; if not, write to the Free Software Foundation,
0N/A * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
0N/A *
2362N/A * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2362N/A * or visit www.oracle.com if you need additional information or have any
2362N/A * questions.
0N/A */
0N/A
0N/Apackage sun.reflect;
0N/A
0N/Aimport java.util.Iterator;
0N/Aimport java.util.List;
0N/Aimport java.util.ArrayList;
0N/A
0N/A/** Allows forward references in bytecode streams emitted by
0N/A ClassFileAssembler. Assumes that the start of the method body is
0N/A the first byte in the assembler's buffer. May be used at more than
0N/A one branch site. */
0N/A
0N/Aclass Label {
0N/A static class PatchInfo {
0N/A PatchInfo(ClassFileAssembler asm,
0N/A short instrBCI,
0N/A short patchBCI,
0N/A int stackDepth)
0N/A {
0N/A this.asm = asm;
0N/A this.instrBCI = instrBCI;
0N/A this.patchBCI = patchBCI;
0N/A this.stackDepth = stackDepth;
0N/A }
0N/A // This won't work for more than one assembler anyway, so this is
0N/A // unnecessary
0N/A ClassFileAssembler asm;
0N/A short instrBCI;
0N/A short patchBCI;
0N/A int stackDepth;
0N/A }
0N/A private List/*<PatchInfo>*/ patches = new ArrayList();
0N/A
0N/A public Label() {
0N/A }
0N/A
0N/A void add(ClassFileAssembler asm,
0N/A short instrBCI,
0N/A short patchBCI,
0N/A int stackDepth)
0N/A {
0N/A patches.add(new PatchInfo(asm, instrBCI, patchBCI, stackDepth));
0N/A }
0N/A
0N/A public void bind() {
0N/A for (Iterator iter = patches.iterator(); iter.hasNext(); ) {
0N/A PatchInfo patch = (PatchInfo) iter.next();
0N/A short curBCI = patch.asm.getLength();
0N/A short offset = (short) (curBCI - patch.instrBCI);
0N/A patch.asm.emitShort(patch.patchBCI, offset);
0N/A patch.asm.setStack(patch.stackDepth);
0N/A }
0N/A }
0N/A}