Mercurial > hg > truffle
view graal/com.oracle.graal.hotspot/src/com/oracle/graal/hotspot/nodes/CStringNode.java @ 16745:bda327903f96
Truffle: turn off class instance stamps by default.
author | Christian Humer <christian.humer@gmail.com> |
---|---|
date | Mon, 11 Aug 2014 15:44:52 +0200 |
parents | c0b8d395368b |
children | 5d468add216f |
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/* * Copyright (c) 2012, 2014, 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 com.oracle.graal.hotspot.nodes; import com.oracle.graal.api.meta.*; import com.oracle.graal.nodes.calc.*; import com.oracle.graal.nodes.spi.*; import com.oracle.graal.word.*; /** * Converts a compile-time constant Java string into a C string installed with the generated code. */ public final class CStringNode extends FloatingNode implements LIRLowerable { private final String string; private CStringNode(String string) { super(null); this.string = string; } public void generate(NodeLIRBuilderTool gen) { gen.setResult(this, emitCString(gen, string)); } public static AllocatableValue emitCString(NodeLIRBuilderTool gen, String value) { AllocatableValue dst = gen.getLIRGeneratorTool().newVariable(LIRKind.value(gen.getLIRGeneratorTool().target().wordKind)); gen.getLIRGeneratorTool().emitData(dst, toCString(value)); return dst; } /** * Converts a string to a null terminated byte array of ASCII characters. * * @param s a String that must only contain ASCII characters */ public static byte[] toCString(String s) { byte[] bytes = new byte[s.length() + 1]; for (int i = 0; i < s.length(); i++) { assert s.charAt(i) < 128 : "non-ascii string: " + s; bytes[i] = (byte) s.charAt(i); } bytes[s.length()] = 0; return bytes; } @NodeIntrinsic(setStampFromReturnType = true) public static native Word cstring(@ConstantNodeParameter String string); }