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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/builtins/SLPrintlnBuiltin.java @ 21469:286aef83a9a7

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Replacing PrintStream with PrintWriter in the simple language
author Jaroslav Tulach <jaroslav.tulach@oracle.com>
date Fri, 22 May 2015 18:12:01 +0200
parents b4e38f4ca414
children
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1 /*
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2 * Copyright (c) 2012, 2014, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 */
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23 package com.oracle.truffle.sl.builtins;
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24
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25 import java.io.*;
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26
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27 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary;
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28 import com.oracle.truffle.api.dsl.*;
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29 import com.oracle.truffle.api.nodes.*;
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30 import com.oracle.truffle.api.source.*;
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31 import com.oracle.truffle.sl.runtime.*;
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32
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33 /**
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34 * Builtin function to write a value to the {@link SLContext#getOutput() standard output}. The
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35 * different specialization leverage the typed {@code println} methods available in Java, i.e.,
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36 * primitive values are printed without converting them to a {@link String} first.
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37 * <p>
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38 * Printing involves a lot of Java code, so we need to tell the optimizing system that it should not
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39 * unconditionally inline everything reachable from the println() method. This is done via the
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40 * {@link TruffleBoundary} annotations.
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41 */
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42 @NodeInfo(shortName = "println")
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43 public abstract class SLPrintlnBuiltin extends SLBuiltinNode {
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44
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45 public SLPrintlnBuiltin() {
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46 super(new NullSourceSection("SL builtin", "println"));
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47 }
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48
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49 @Specialization
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50 public long println(long value) {
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51 doPrint(getContext().getOutput(), value);
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52 return value;
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53 }
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54
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55 @TruffleBoundary
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56 private static void doPrint(PrintWriter out, long value) {
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57 out.println(value);
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58 }
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59
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60 @Specialization
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61 public boolean println(boolean value) {
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62 doPrint(getContext().getOutput(), value);
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63 return value;
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64 }
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65
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66 @TruffleBoundary
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67 private static void doPrint(PrintWriter out, boolean value) {
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68 out.println(value);
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69 }
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70
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71 @Specialization
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72 public String println(String value) {
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73 doPrint(getContext().getOutput(), value);
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74 return value;
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75 }
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76
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77 @TruffleBoundary
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78 private static void doPrint(PrintWriter out, String value) {
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79 out.println(value);
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80 }
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81
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82 @Specialization
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83 public Object println(Object value) {
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84 doPrint(getContext().getOutput(), value);
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85 return value;
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86 }
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87
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88 @TruffleBoundary
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89 private static void doPrint(PrintWriter out, Object value) {
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90 out.println(value);
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91 }
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92 }