| /* |
| * Copyright (c) 2016, 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. |
| * |
| * 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 org.graalvm.compiler.replacements.nodes; |
| |
| import java.nio.ByteBuffer; |
| import java.nio.charset.Charset; |
| |
| import org.graalvm.compiler.core.common.type.DataPointerConstant; |
| import org.graalvm.compiler.core.common.type.StampFactory; |
| import org.graalvm.compiler.graph.Node.ConstantNodeParameter; |
| import org.graalvm.compiler.graph.Node.NodeIntrinsic; |
| import org.graalvm.compiler.nodes.ConstantNode; |
| import org.graalvm.compiler.nodes.graphbuilderconf.GraphBuilderContext; |
| import org.graalvm.compiler.word.Word; |
| |
| import jdk.vm.ci.meta.JavaKind; |
| import jdk.vm.ci.meta.ResolvedJavaMethod; |
| |
| /** |
| * Represents a compile-time constant zero-terminated UTF-8 string installed with the generated |
| * code. |
| */ |
| public final class CStringConstant extends DataPointerConstant { |
| |
| private static final Charset UTF8 = Charset.forName("utf8"); |
| |
| private final String string; |
| |
| public CStringConstant(String string) { |
| super(1); |
| assert string != null; |
| this.string = string; |
| } |
| |
| @Override |
| public int getSerializedSize() { |
| return string.getBytes(UTF8).length + 1; |
| } |
| |
| @Override |
| public void serialize(ByteBuffer buffer) { |
| byte[] bytes = string.getBytes(UTF8); |
| buffer.put(bytes); |
| buffer.put((byte) 0); |
| } |
| |
| @Override |
| public String toValueString() { |
| return "c\"" + string + "\""; |
| } |
| |
| public static boolean intrinsify(GraphBuilderContext b, @SuppressWarnings("unused") ResolvedJavaMethod targetMethod, String string) { |
| b.addPush(JavaKind.Object, new ConstantNode(new CStringConstant(string), StampFactory.pointer())); |
| return true; |
| } |
| |
| @NodeIntrinsic |
| public static native Word cstring(@ConstantNodeParameter String string); |
| } |