Mercurial > hg > graal-compiler
annotate graal/com.oracle.truffle.api.dsl.test/src/com/oracle/truffle/api/dsl/test/examples/RubyCall.java @ 21480:c2b006c5e15f
Testing the annotation processor using the @ExpectedError annotation as suggested by Christian Humer
author | Jaroslav Tulach <jaroslav.tulach@oracle.com> |
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date | Mon, 25 May 2015 10:36:30 +0200 |
parents | 476374f3fe9a |
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rev | line source |
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1 /* |
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2 * Copyright (c) 2015, 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.api.dsl.test.examples; |
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24 |
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25 import static com.oracle.truffle.api.dsl.test.examples.ExampleNode.*; |
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26 import static org.junit.Assert.*; |
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27 |
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28 import java.util.*; |
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29 |
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30 import org.junit.*; |
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31 |
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32 import com.oracle.truffle.api.*; |
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33 import com.oracle.truffle.api.CompilerDirectives.TruffleBoundary; |
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34 import com.oracle.truffle.api.dsl.*; |
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35 import com.oracle.truffle.api.dsl.internal.*; |
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36 import com.oracle.truffle.api.dsl.test.examples.RubyCallFactory.RubyDispatchNodeGen; |
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37 import com.oracle.truffle.api.dsl.test.examples.RubyCallFactory.RubyHeadNodeGen; |
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38 import com.oracle.truffle.api.dsl.test.examples.RubyCallFactory.RubyLookupNodeGen; |
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39 import com.oracle.truffle.api.frame.*; |
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40 import com.oracle.truffle.api.nodes.*; |
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41 import com.oracle.truffle.api.utilities.*; |
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42 |
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43 /** |
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44 * This example illustrates a simplified version of a Ruby function call semantics (RubyHeadNode). |
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45 * The example usage shows how methods can be redefined in this implementation. |
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46 */ |
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47 @SuppressWarnings("unused") |
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48 public class RubyCall { |
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49 |
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50 @Test |
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51 public void testCall() { |
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52 RubyHeadNode node = RubyHeadNodeGen.create(createArguments(4)); |
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53 CallTarget nodeTarget = createTarget(node); |
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54 final Object firstArgument = "someArgument"; |
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55 |
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56 // dummyMethod is just going to return the some argument of the function |
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57 final Object testMethodName = "getSomeArgument"; |
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58 // implementation returns first argument |
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59 InternalMethod aClassTestMethod = new InternalMethod(ExampleNode.createDummyTarget(3)); |
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60 // implementation returns second argument |
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61 InternalMethod bClassTestMethod = new InternalMethod(ExampleNode.createDummyTarget(4)); |
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62 // implementation returns third argument |
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63 InternalMethod cClassTestMethod = new InternalMethod(ExampleNode.createDummyTarget(5)); |
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64 |
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65 // defines hierarchy C extends B extends A |
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66 RubyClass aClass = new RubyClass("A", null); |
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67 RubyClass bClass = new RubyClass("B", aClass); |
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68 RubyClass cClass = new RubyClass("C", bClass); |
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69 |
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70 RubyObject aInstance = new RubyObject(aClass); |
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71 RubyObject bInstance = new RubyObject(bClass); |
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72 RubyObject cInstance = new RubyObject(cClass); |
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73 |
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74 // undefined method call |
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75 assertEquals(RubyObject.NIL, nodeTarget.call(cInstance, testMethodName, null, new Object[]{firstArgument})); |
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76 |
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77 // method defined in a |
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78 aClass.addMethod(testMethodName, aClassTestMethod); |
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79 assertEquals(firstArgument, nodeTarget.call(aInstance, testMethodName, null, new Object[]{firstArgument})); |
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80 assertEquals(firstArgument, nodeTarget.call(bInstance, testMethodName, null, new Object[]{firstArgument})); |
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81 assertEquals(firstArgument, nodeTarget.call(cInstance, testMethodName, null, new Object[]{firstArgument})); |
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82 |
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83 // method redefined in b |
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84 bClass.addMethod(testMethodName, bClassTestMethod); |
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85 assertEquals(firstArgument, nodeTarget.call(aInstance, testMethodName, null, new Object[]{firstArgument})); |
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86 assertEquals(firstArgument, nodeTarget.call(bInstance, testMethodName, null, new Object[]{null, firstArgument})); |
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87 assertEquals(firstArgument, nodeTarget.call(cInstance, testMethodName, null, new Object[]{null, firstArgument})); |
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88 |
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89 // method redefined in c |
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90 cClass.addMethod(testMethodName, cClassTestMethod); |
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91 assertEquals(firstArgument, nodeTarget.call(aInstance, testMethodName, null, new Object[]{firstArgument})); |
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92 assertEquals(firstArgument, nodeTarget.call(bInstance, testMethodName, null, new Object[]{null, firstArgument})); |
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93 assertEquals(firstArgument, nodeTarget.call(cInstance, testMethodName, null, new Object[]{null, null, firstArgument})); |
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94 |
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95 } |
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96 |
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97 public static class RubyHeadNode extends ExampleNode { |
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98 |
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99 @Child private RubyLookupNode lookup = RubyLookupNodeGen.create(); |
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100 @Child private RubyDispatchNode dispatch = RubyDispatchNodeGen.create(); |
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101 |
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102 @Specialization |
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103 public Object doCall(VirtualFrame frame, RubyObject receiverObject, Object methodName, Object blockObject, Object... argumentsObjects) { |
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104 InternalMethod method = lookup.executeLookup(receiverObject, methodName); |
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105 |
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106 Object[] packedArguments = new Object[argumentsObjects.length + 3]; |
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107 packedArguments[0] = method; |
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108 packedArguments[1] = receiverObject; |
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109 packedArguments[2] = blockObject; |
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110 System.arraycopy(argumentsObjects, 0, packedArguments, 3, argumentsObjects.length); |
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111 |
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112 return dispatch.executeDispatch(frame, method, packedArguments); |
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113 } |
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114 } |
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115 |
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116 public abstract static class RubyLookupNode extends Node { |
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117 |
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118 public abstract InternalMethod executeLookup(RubyObject receiver, Object method); |
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119 |
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120 @Specialization(guards = "receiver.getRubyClass() == cachedClass", assumptions = "cachedClass.getDependentAssumptions()") |
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121 protected static InternalMethod cachedLookup(RubyObject receiver, Object name, // |
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122 @Cached("receiver.getRubyClass()") RubyClass cachedClass, // |
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123 @Cached("genericLookup(receiver, name)") InternalMethod cachedLookup) { |
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124 return cachedLookup; |
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125 } |
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126 |
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127 @Specialization(contains = "cachedLookup") |
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128 protected static InternalMethod genericLookup(RubyObject receiver, Object name) { |
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129 return receiver.getRubyClass().lookup(name); |
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130 } |
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131 |
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132 } |
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133 |
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134 @ImportStatic(InternalMethod.class) |
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135 public abstract static class RubyDispatchNode extends Node { |
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136 |
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137 public abstract Object executeDispatch(VirtualFrame frame, InternalMethod function, Object[] packedArguments); |
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138 |
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139 /* |
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140 * Please note that cachedMethod != METHOD_MISSING is invoked once at specialization |
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141 * instantiation. It is never executed on the fast path. |
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142 */ |
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143 @Specialization(guards = {"method == cachedMethod", "cachedMethod != METHOD_MISSING"}) |
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144 protected static Object directCall(VirtualFrame frame, InternalMethod method, Object[] arguments, // |
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145 @Cached("method") InternalMethod cachedMethod, // |
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146 @Cached("create(cachedMethod.getTarget())") DirectCallNode callNode) { |
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147 return callNode.call(frame, arguments); |
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148 } |
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149 |
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150 /* |
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151 * The method == METHOD_MISSING can fold if the RubyLookup results just in a single entry |
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152 * returning the constant METHOD_MISSING. |
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153 */ |
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154 @Specialization(guards = "method == METHOD_MISSING") |
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155 protected static Object methodMissing(VirtualFrame frame, InternalMethod method, Object[] arguments) { |
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156 // a real implementation would do a call to a method named method_missing here |
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157 return RubyObject.NIL; |
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158 } |
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159 |
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160 @Specialization(contains = "directCall", guards = "method != METHOD_MISSING") |
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161 protected static Object indirectCall(VirtualFrame frame, InternalMethod method, Object[] arguments, // |
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162 @Cached("create()") IndirectCallNode callNode) { |
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163 return callNode.call(frame, method.getTarget(), arguments); |
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164 } |
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165 |
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166 @Override |
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167 public String toString() { |
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168 return ((SpecializedNode) this).getSpecializationNode().toString(); |
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169 } |
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170 } |
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171 |
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172 public static final class RubyObject { |
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173 |
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174 public static final RubyObject NIL = new RubyObject(null); |
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175 |
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176 private final RubyClass rubyClass; |
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177 |
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178 public RubyObject(RubyClass rubyClass) { |
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179 this.rubyClass = rubyClass; |
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180 } |
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181 |
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182 public RubyClass getRubyClass() { |
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183 return rubyClass; |
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184 } |
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185 |
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186 @Override |
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187 public String toString() { |
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188 return "RubyObject[class=" + rubyClass + "]"; |
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189 } |
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190 |
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191 } |
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192 |
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193 public static final class RubyClass /* this would extend RubyModule */{ |
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194 |
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195 private final String name; |
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196 private final RubyClass parent; // this would be a RubyModule |
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197 private final CyclicAssumption unmodified; |
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198 private final Map<Object, InternalMethod> methods = new HashMap<>(); |
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199 private Assumption[] cachedDependentAssumptions; |
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200 private final int depth; |
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201 |
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202 public RubyClass(String name, RubyClass parent) { |
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203 this.name = name; |
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204 this.parent = parent; |
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205 this.unmodified = new CyclicAssumption("unmodified class " + name); |
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206 |
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207 // lookup depth for array allocation |
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208 RubyClass clazz = parent; |
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209 int currentDepth = 1; |
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210 while (clazz != null) { |
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211 currentDepth++; |
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212 clazz = clazz.parent; |
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213 } |
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214 this.depth = currentDepth; |
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215 } |
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216 |
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217 @TruffleBoundary |
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218 public InternalMethod lookup(Object methodName) { |
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219 InternalMethod method = methods.get(methodName); |
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220 if (method == null) { |
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221 if (parent != null) { |
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222 return parent.lookup(methodName); |
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223 } else { |
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224 return InternalMethod.METHOD_MISSING; |
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225 } |
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226 } else { |
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227 return method; |
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228 } |
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229 } |
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230 |
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231 @TruffleBoundary |
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232 public void addMethod(Object methodName, InternalMethod method) { |
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233 // check for existing method omitted for simplicity |
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234 this.methods.put(methodName, method); |
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235 this.unmodified.invalidate(); |
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236 } |
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237 |
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238 /* |
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239 * Method collects all unmodified assumptions in the class hierarchy. The result is cached |
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240 * per class to void recreation per call site. |
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241 */ |
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242 @TruffleBoundary |
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243 public Assumption[] getDependentAssumptions() { |
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244 Assumption[] dependentAssumptions = cachedDependentAssumptions; |
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245 if (dependentAssumptions != null) { |
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246 // we can use the cached dependent assumptions only if they are still valid |
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247 for (Assumption assumption : cachedDependentAssumptions) { |
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248 if (!assumption.isValid()) { |
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249 dependentAssumptions = null; |
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250 break; |
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251 } |
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252 } |
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253 } |
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254 if (dependentAssumptions == null) { |
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255 cachedDependentAssumptions = dependentAssumptions = createDependentAssumptions(); |
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256 } |
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257 return dependentAssumptions; |
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258 } |
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259 |
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260 @Override |
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261 public String toString() { |
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262 return "RubyClass[name=" + name + "]"; |
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263 } |
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264 |
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265 private Assumption[] createDependentAssumptions() { |
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266 Assumption[] dependentAssumptions; |
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267 RubyClass clazz = this; |
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268 dependentAssumptions = new Assumption[depth]; |
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269 |
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270 // populate array |
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271 int index = 0; |
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272 do { |
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273 dependentAssumptions[index] = clazz.unmodified.getAssumption(); |
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274 index++; |
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275 clazz = clazz.parent; |
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276 } while (clazz != null); |
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277 return dependentAssumptions; |
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278 } |
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279 } |
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280 |
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281 public static final class InternalMethod { |
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282 |
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283 public static final InternalMethod METHOD_MISSING = new InternalMethod(null); |
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284 |
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285 private final CallTarget target; |
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286 |
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287 public InternalMethod(CallTarget target) { |
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288 this.target = target; |
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289 } |
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290 |
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291 public CallTarget getTarget() { |
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292 return target; |
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293 } |
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294 |
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295 @Override |
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296 public String toString() { |
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297 return "InternalMethod[target=" + getTarget() + "]"; |
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298 } |
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299 |
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300 } |
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301 |
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302 } |