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annotate graal/com.oracle.truffle.sl/src/com/oracle/truffle/sl/runtime/SLContext.java @ 14800:f19d64d2cf69
Add LIRControlFlowGraph.
author | Josef Eisl <josef.eisl@jku.at> |
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date | Thu, 13 Mar 2014 17:19:48 +0100 |
parents | afd6fa5e8229 |
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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.runtime; |
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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.dsl.*; |
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28 import com.oracle.truffle.api.frame.*; |
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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.builtins.*; |
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32 import com.oracle.truffle.sl.nodes.*; |
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33 import com.oracle.truffle.sl.nodes.local.*; |
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34 import com.oracle.truffle.sl.parser.*; |
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35 |
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36 /** |
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37 * The run-time state of SL during execution. One context is instantiated before any source code is |
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38 * parsed, and this context is passed around to all methods that need access to it. For example, the |
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39 * context is used during {@link SLNodeFactory parsing} and by {@link SLBuiltinNode#getContext() |
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40 * builtin functions}. |
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41 * <p> |
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42 * It would be an error to have two different context instances during the execution of one script. |
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43 * However, if two separate scripts run in one Java VM at the same time, they have a different |
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44 * context. Therefore, the context is not a singleton. |
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45 */ |
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46 public final class SLContext { |
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47 private final SourceManager sourceManager; |
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48 private final BufferedReader input; |
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49 private final PrintStream output; |
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50 private final SLFunctionRegistry functionRegistry; |
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51 |
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52 public SLContext(SourceManager sourceManager, BufferedReader input, PrintStream output) { |
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53 this.sourceManager = sourceManager; |
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54 this.input = input; |
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55 this.output = output; |
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56 this.functionRegistry = new SLFunctionRegistry(); |
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57 |
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58 installBuiltins(); |
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59 } |
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60 |
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61 /** |
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62 * Returns the source manger that controls all SL source code that is executed. |
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63 */ |
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64 public SourceManager getSourceManager() { |
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65 return sourceManager; |
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66 } |
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67 |
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68 /** |
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69 * Returns the default input, i.e., the source for the {@link SLReadlnBuiltin}. To allow unit |
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70 * testing, we do not use {@link System#in} directly. |
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71 */ |
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72 public BufferedReader getInput() { |
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73 return input; |
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74 } |
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75 |
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76 /** |
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77 * The default default, i.e., the output for the {@link SLPrintlnBuiltin}. To allow unit |
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78 * testing, we do not use {@link System#out} directly. |
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79 */ |
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80 public PrintStream getOutput() { |
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81 return output; |
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82 } |
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83 |
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84 /** |
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85 * Returns the registry of all functions that are currently defined. |
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86 */ |
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87 public SLFunctionRegistry getFunctionRegistry() { |
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88 return functionRegistry; |
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89 } |
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90 |
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91 /** |
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92 * Adds all builtin functions to the {@link SLFunctionRegistry}. This method lists all |
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93 * {@link SLBuiltinNode builtin implementation classes}. |
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94 */ |
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95 private void installBuiltins() { |
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96 installBuiltin(SLReadlnBuiltinFactory.getInstance()); |
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97 installBuiltin(SLPrintlnBuiltinFactory.getInstance()); |
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98 installBuiltin(SLNanoTimeBuiltinFactory.getInstance()); |
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99 installBuiltin(SLDefineFunctionBuiltinFactory.getInstance()); |
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100 } |
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101 |
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102 private void installBuiltin(NodeFactory<? extends SLBuiltinNode> factory) { |
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103 /* |
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104 * The builtin node factory is a class that is automatically generated by the Truffle DSL. |
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105 * The signature returned by the factory reflects the signature of the @Specialization |
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106 * methods in the builtin classes. |
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107 */ |
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108 int argumentCount = factory.getExecutionSignature().size(); |
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109 SLExpressionNode[] argumentNodes = new SLExpressionNode[argumentCount]; |
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110 /* |
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111 * Builtin functions are like normal functions, i.e., the arguments are passed in as an |
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112 * Object[] array encapsulated in SLArguments. A SLReadArgumentNode extracts a parameter |
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113 * from this array. |
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114 */ |
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115 for (int i = 0; i < argumentCount; i++) { |
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116 argumentNodes[i] = new SLReadArgumentNode(i); |
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117 } |
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118 /* Instantiate the builtin node. This node performs the actual functionality. */ |
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119 SLBuiltinNode builtinBodyNode = factory.createNode(argumentNodes, this); |
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120 /* The name of the builtin function is specified via an annotation on the node class. */ |
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121 String name = builtinBodyNode.getClass().getAnnotation(NodeInfo.class).shortName(); |
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122 /* Wrap the builtin in a RootNode. Truffle requires all AST to start with a RootNode. */ |
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123 SLRootNode rootNode = new SLRootNode(new FrameDescriptor(), builtinBodyNode, name); |
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124 |
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125 /* Register the builtin function in our function registry. */ |
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126 getFunctionRegistry().register(name, rootNode); |
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127 } |
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128 } |