Mercurial > hg > graal-compiler
view graal/com.oracle.truffle.api/src/com/oracle/truffle/api/impl/DefaultVirtualFrame.java @ 11279:494b818b527c
Adding "Classpath" exception to the classes in the com.oracle.truffle.api and the com.oracle.truffle.api.dsl package.
author | Thomas Wuerthinger <thomas.wuerthinger@oracle.com> |
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date | Fri, 09 Aug 2013 11:55:20 +0200 |
parents | 3c398866d634 |
children | 51dcddfa25a6 |
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/* * Copyright (c) 2012, 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.impl; import java.util.*; import com.oracle.truffle.api.*; import com.oracle.truffle.api.frame.*; public final class DefaultVirtualFrame implements VirtualFrame { private final FrameDescriptor descriptor; private final PackedFrame caller; private final Arguments arguments; private Object[] locals; private byte[] tags; public DefaultVirtualFrame(FrameDescriptor descriptor, PackedFrame caller, Arguments arguments) { this.descriptor = descriptor; this.caller = caller; this.arguments = arguments; this.locals = new Object[descriptor.getSize()]; this.tags = new byte[descriptor.getSize()]; } @SuppressWarnings("unchecked") @Override public <T extends Arguments> T getArguments(Class<T> clazz) { return (T) arguments; } @Override public PackedFrame getCaller() { return caller; } @Override public PackedFrame pack() { return new DefaultPackedFrame(this); } @Override public MaterializedFrame materialize() { return new DefaultMaterializedFrame(this); } @Override public Object getObject(FrameSlot slot) throws FrameSlotTypeException { verifyGet(slot, FrameSlotKind.Object); return locals[slot.getIndex()]; } @Override public void setObject(FrameSlot slot, Object value) throws FrameSlotTypeException { verifySet(slot, FrameSlotKind.Object); locals[slot.getIndex()] = value; } @Override public boolean getBoolean(FrameSlot slot) throws FrameSlotTypeException { verifyGet(slot, FrameSlotKind.Boolean); return (boolean) locals[slot.getIndex()]; } @Override public void setBoolean(FrameSlot slot, boolean value) throws FrameSlotTypeException { verifySet(slot, FrameSlotKind.Boolean); locals[slot.getIndex()] = value; } @Override public int getInt(FrameSlot slot) throws FrameSlotTypeException { verifyGet(slot, FrameSlotKind.Int); return (int) locals[slot.getIndex()]; } @Override public void setInt(FrameSlot slot, int value) throws FrameSlotTypeException { verifySet(slot, FrameSlotKind.Int); locals[slot.getIndex()] = value; } @Override public long getLong(FrameSlot slot) throws FrameSlotTypeException { verifyGet(slot, FrameSlotKind.Long); return (long) locals[slot.getIndex()]; } @Override public void setLong(FrameSlot slot, long value) throws FrameSlotTypeException { verifySet(slot, FrameSlotKind.Long); locals[slot.getIndex()] = value; } @Override public float getFloat(FrameSlot slot) throws FrameSlotTypeException { verifyGet(slot, FrameSlotKind.Float); return (float) locals[slot.getIndex()]; } @Override public void setFloat(FrameSlot slot, float value) throws FrameSlotTypeException { verifySet(slot, FrameSlotKind.Float); locals[slot.getIndex()] = value; } @Override public double getDouble(FrameSlot slot) throws FrameSlotTypeException { verifyGet(slot, FrameSlotKind.Double); return (double) locals[slot.getIndex()]; } @Override public void setDouble(FrameSlot slot, double value) throws FrameSlotTypeException { verifySet(slot, FrameSlotKind.Double); locals[slot.getIndex()] = value; } @Override public FrameDescriptor getFrameDescriptor() { return this.descriptor; } @Override public Object getValue(FrameSlot slot) { int index = slot.getIndex(); if (index >= tags.length) { assert index >= 0 && index < descriptor.getSize(); return descriptor.getTypeConversion().getDefaultValue(); } byte tag = tags[index]; if (tag == FrameSlotKind.Illegal.ordinal()) { return descriptor.getTypeConversion().getDefaultValue(); } else { return locals[index]; } } private void verifySet(FrameSlot slot, FrameSlotKind accessKind) throws FrameSlotTypeException { FrameSlotKind slotKind = slot.getKind(); if (slotKind != accessKind) { if (slotKind == FrameSlotKind.Illegal) { slot.setKind(accessKind); } else { throw new FrameSlotTypeException(); } } int slotIndex = slot.getIndex(); if (slotIndex >= tags.length) { resize(); } tags[slotIndex] = (byte) accessKind.ordinal(); } private void verifyGet(FrameSlot slot, FrameSlotKind accessKind) throws FrameSlotTypeException { FrameSlotKind slotKind = slot.getKind(); if (slotKind != accessKind) { if (slotKind == FrameSlotKind.Illegal && accessKind == FrameSlotKind.Object) { slot.setKind(FrameSlotKind.Object); this.setObject(slot, descriptor.getTypeConversion().getDefaultValue()); } else { throw new FrameSlotTypeException(); } } int slotIndex = slot.getIndex(); if (slotIndex >= tags.length) { resize(); } if (tags[slotIndex] != accessKind.ordinal()) { descriptor.getTypeConversion().updateFrameSlot(this, slot, getValue(slot)); if (tags[slotIndex] != accessKind.ordinal()) { throw new FrameSlotTypeException(); } } } private void resize() { int newSize = descriptor.getSize(); if (newSize > tags.length) { locals = Arrays.copyOf(locals, newSize); tags = Arrays.copyOf(tags, newSize); } } @Override public boolean isInitialized(FrameSlot slot) { try { return tags[slot.getIndex()] != 0; } catch (ArrayIndexOutOfBoundsException ex) { if (slot.getIndex() >= 0 && slot.getIndex() < descriptor.getSize()) { return false; } throw ex; } } }