Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/nodes/SLExpressionNode.java @ 18130:b4e38f4ca414
Truffle: rename @SlowPath to @TruffleBoundary.
author | Christian Humer <christian.humer@gmail.com> |
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date | Tue, 21 Oct 2014 00:22:51 +0200 |
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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.nodes; |
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24 |
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25 import java.math.*; |
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26 |
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27 import com.oracle.truffle.api.dsl.*; |
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28 import com.oracle.truffle.api.frame.*; |
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29 import com.oracle.truffle.api.instrument.*; |
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30 import com.oracle.truffle.api.nodes.*; |
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31 import com.oracle.truffle.api.source.*; |
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32 import com.oracle.truffle.sl.nodes.instrument.*; |
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33 import com.oracle.truffle.sl.runtime.*; |
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34 |
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35 /** |
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36 * Base class for all SL nodes that produce a value and therefore benefit from type specialization. |
14906 | 37 * The annotation {@link TypeSystemReference} specifies the SL types. Specifying it here defines the |
38 * type system for all subclasses. | |
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39 */ |
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40 @TypeSystemReference(SLTypes.class) |
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41 @NodeInfo(description = "The abstract base node for all expressions") |
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42 public abstract class SLExpressionNode extends SLStatementNode { |
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43 |
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44 public SLExpressionNode(SourceSection src) { |
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45 super(src); |
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46 } |
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47 |
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48 /** |
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49 * The execute method when no specialization is possible. This is the most general case, |
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50 * therefore it must be provided by all subclasses. |
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51 */ |
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52 public abstract Object executeGeneric(VirtualFrame frame); |
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53 |
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54 /** |
14906 | 55 * When we use an expression at places where a {@link SLStatementNode statement} is already |
56 * sufficient, the return value is just discarded. | |
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57 */ |
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58 @Override |
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59 public void executeVoid(VirtualFrame frame) { |
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60 executeGeneric(frame); |
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61 } |
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62 |
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63 /* |
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64 * Execute methods for specialized types. They all follow the same pattern: they call the |
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65 * generic execution method and then expect a result of their return type. Type-specialized |
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66 * subclasses overwrite the appropriate methods. |
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67 */ |
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68 |
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69 public long executeLong(VirtualFrame frame) throws UnexpectedResultException { |
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70 return SLTypesGen.SLTYPES.expectLong(executeGeneric(frame)); |
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71 } |
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72 |
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73 public BigInteger executeBigInteger(VirtualFrame frame) throws UnexpectedResultException { |
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74 return SLTypesGen.SLTYPES.expectBigInteger(executeGeneric(frame)); |
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75 } |
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76 |
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77 public boolean executeBoolean(VirtualFrame frame) throws UnexpectedResultException { |
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78 return SLTypesGen.SLTYPES.expectBoolean(executeGeneric(frame)); |
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79 } |
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80 |
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81 public String executeString(VirtualFrame frame) throws UnexpectedResultException { |
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82 return SLTypesGen.SLTYPES.expectString(executeGeneric(frame)); |
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83 } |
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84 |
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85 public SLFunction executeFunction(VirtualFrame frame) throws UnexpectedResultException { |
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86 return SLTypesGen.SLTYPES.expectSLFunction(executeGeneric(frame)); |
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87 } |
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88 |
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89 public SLNull executeNull(VirtualFrame frame) throws UnexpectedResultException { |
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90 return SLTypesGen.SLTYPES.expectSLNull(executeGeneric(frame)); |
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91 } |
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92 |
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93 @Override |
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94 public Probe probe() { |
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95 Node parent = getParent(); |
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96 |
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97 if (parent == null) { |
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98 throw new IllegalStateException("Cannot probe a node without a parent"); |
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99 } |
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100 |
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101 if (parent instanceof SLExpressionWrapper) { |
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102 return ((SLExpressionWrapper) parent).getProbe(); |
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103 } |
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104 |
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105 // Create a new wrapper/probe with this node as its child. |
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106 final SLExpressionWrapper wrapper = new SLExpressionWrapper(getRootNodeSLContext(this), this); |
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107 |
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108 // Replace this node in the AST with the wrapper |
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109 this.replace(wrapper); |
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110 |
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111 return wrapper.getProbe(); |
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112 } |
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113 } |