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13514
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1 /*
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2 * Copyright (c) 2013 Oracle and/or its affiliates. All rights reserved. This
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3 * code is released under a tri EPL/GPL/LGPL license. You can use it,
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4 * redistribute it and/or modify it under the terms of the:
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5 *
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6 * Eclipse Public License version 1.0
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7 * GNU General Public License version 2
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8 * GNU Lesser General Public License version 2.1
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9 */
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10 package com.oracle.truffle.ruby.nodes.call;
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11
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12 import com.oracle.truffle.api.*;
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13 import com.oracle.truffle.api.frame.*;
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14 import com.oracle.truffle.api.nodes.*;
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15 import com.oracle.truffle.ruby.runtime.*;
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16 import com.oracle.truffle.ruby.runtime.core.*;
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17 import com.oracle.truffle.ruby.runtime.methods.*;
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18
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19 /**
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20 * A node in the dispatch chain that comes before the boxing point and caches a method on a Java
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21 * object, matching it by looking at the class and assuming it has not been modified.
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22 */
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23 public class CachedUnboxedDispatchNode extends UnboxedDispatchNode {
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24
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25 private final Class expectedClass;
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26 private final Assumption unmodifiedAssumption;
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27 private final RubyMethod method;
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28
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29 @Child protected UnboxedDispatchNode next;
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30
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31 public CachedUnboxedDispatchNode(RubyContext context, SourceSection sourceSection, Class expectedClass, Assumption unmodifiedAssumption, RubyMethod method, UnboxedDispatchNode next) {
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32 super(context, sourceSection);
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33
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34 assert expectedClass != null;
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35 assert unmodifiedAssumption != null;
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36 assert method != null;
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37
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38 this.expectedClass = expectedClass;
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39 this.unmodifiedAssumption = unmodifiedAssumption;
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40 this.method = method;
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41 this.next = adoptChild(next);
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42 }
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43
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44 @Override
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45 public Object dispatch(VirtualFrame frame, Object receiverObject, RubyProc blockObject, Object[] argumentsObjects) {
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46 // Check the class is what we expect
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47
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48 if (receiverObject.getClass() != expectedClass) {
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49 return next.dispatch(frame, receiverObject, blockObject, argumentsObjects);
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50 }
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51
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52 // Check the class has not been modified
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53
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54 try {
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55 unmodifiedAssumption.check();
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56 } catch (InvalidAssumptionException e) {
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57 return respecialize("class modified", frame, receiverObject, blockObject, argumentsObjects);
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58 }
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59
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60 // Call the method
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61
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62 return method.call(frame.pack(), receiverObject, blockObject, argumentsObjects);
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63 }
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64
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65 @Override
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66 public void setNext(UnboxedDispatchNode next) {
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67 this.next = adoptChild(next);
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68 }
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69
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70 }
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