/* * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package com.oracle.truffle.api.frame; /** @since 0.8 or earlier */ public final class FrameUtil { /** * @deprecated accidentally public - don't use * @since 0.8 or earlier */ @Deprecated public FrameUtil() { } /** * Read a frame slot that is guaranteed to be of the desired kind (either previously checked by * a guard or statically known). * * @param frameSlot the slot of the variable * @throws IllegalStateException if the slot kind does not match * @see Frame#getObject(FrameSlot) * @since 0.8 or earlier */ public static Object getObjectSafe(Frame frame, FrameSlot frameSlot) { try { return frame.getObject(frameSlot); } catch (FrameSlotTypeException e) { throw new IllegalStateException(); } } /** * Read a frame slot that is guaranteed to be of the desired kind (either previously checked by * a guard or statically known). * * @param frameSlot the slot of the variable * @throws IllegalStateException if the slot kind does not match * @see Frame#getByte(FrameSlot) * @since 0.8 or earlier */ public static byte getByteSafe(Frame frame, FrameSlot frameSlot) { try { return frame.getByte(frameSlot); } catch (FrameSlotTypeException e) { throw new IllegalStateException(); } } /** * Read a frame slot that is guaranteed to be of the desired kind (either previously checked by * a guard or statically known). * * @param frameSlot the slot of the variable * @throws IllegalStateException if the slot kind does not match * @see Frame#getBoolean(FrameSlot) * @since 0.8 or earlier */ public static boolean getBooleanSafe(Frame frame, FrameSlot frameSlot) { try { return frame.getBoolean(frameSlot); } catch (FrameSlotTypeException e) { throw new IllegalStateException(); } } /** * Read a frame slot that is guaranteed to be of the desired kind (either previously checked by * a guard or statically known). * * @param frameSlot the slot of the variable * @throws IllegalStateException if the slot kind does not match * @see Frame#getInt(FrameSlot) * @since 0.8 or earlier */ public static int getIntSafe(Frame frame, FrameSlot frameSlot) { try { return frame.getInt(frameSlot); } catch (FrameSlotTypeException e) { throw new IllegalStateException(); } } /** * Read a frame slot that is guaranteed to be of the desired kind (either previously checked by * a guard or statically known). * * @param frameSlot the slot of the variable * @throws IllegalStateException if the slot kind does not match * @see Frame#getLong(FrameSlot) * @since 0.8 or earlier */ public static long getLongSafe(Frame frame, FrameSlot frameSlot) { try { return frame.getLong(frameSlot); } catch (FrameSlotTypeException e) { throw new IllegalStateException(); } } /** * Read a frame slot that is guaranteed to be of the desired kind (either previously checked by * a guard or statically known). * * @param frameSlot the slot of the variable * @throws IllegalStateException if the slot kind does not match * @see Frame#getDouble(FrameSlot) * @since 0.8 or earlier */ public static double getDoubleSafe(Frame frame, FrameSlot frameSlot) { try { return frame.getDouble(frameSlot); } catch (FrameSlotTypeException e) { throw new IllegalStateException(); } } /** * Read a frame slot that is guaranteed to be of the desired kind (either previously checked by * a guard or statically known). * * @param frameSlot the slot of the variable * @throws IllegalStateException if the slot kind does not match * @see Frame#getFloat(FrameSlot) * @since 0.8 or earlier */ public static float getFloatSafe(Frame frame, FrameSlot frameSlot) { try { return frame.getFloat(frameSlot); } catch (FrameSlotTypeException e) { throw new IllegalStateException(); } } }