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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.ruby.runtime.*;
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15 import com.oracle.truffle.ruby.runtime.core.*;
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16 import com.oracle.truffle.ruby.runtime.methods.*;
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17 import com.oracle.truffle.ruby.runtime.objects.*;
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18
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19 /**
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20 * The head of a chain of dispatch nodes. Can be used with {@link CallNode} or on its own.
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21 */
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22 public class DispatchHeadNode extends DispatchNode {
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23
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24 private final RubyContext context;
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25 private final String name;
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26 private final boolean isSplatted;
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27
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28 @Child protected UnboxedDispatchNode dispatch;
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29
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30 public DispatchHeadNode(RubyContext context, SourceSection sourceSection, String name, boolean isSplatted) {
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31 super(context, sourceSection);
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32
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33 assert context != null;
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34 assert name != null;
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35
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36 this.context = context;
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37 this.name = name;
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38 this.isSplatted = isSplatted;
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39
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40 final UninitializedDispatchNode uninitializedDispatch = new UninitializedDispatchNode(context, sourceSection, name);
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41 dispatch = adoptChild(new UninitializedBoxingDispatchNode(context, sourceSection, uninitializedDispatch));
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42 }
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43
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44 public Object dispatch(VirtualFrame frame, Object receiverObject, RubyProc blockObject, Object... argumentsObjects) {
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45 return dispatch.dispatch(frame, receiverObject, blockObject, argumentsObjects);
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46 }
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47
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48 /**
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49 * Replace the entire dispatch chain with a fresh chain. Used when the situation has changed in
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50 * such a significant way that it's best to start again rather than add new specializations to
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51 * the chain. Used for example when methods appear to have been monkey-patched.
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52 */
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53 public Object respecialize(VirtualFrame frame, String reason, Object receiverObject, RubyProc blockObject, Object... argumentObjects) {
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54 CompilerAsserts.neverPartOfCompilation();
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55
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56 replace(new DispatchHeadNode(context, getSourceSection(), name, isSplatted), reason);
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57
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58 final RubyBasicObject receiverBasicObject = context.getCoreLibrary().box(receiverObject);
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59
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60 final RubyMethod method = lookup(frame, receiverBasicObject, name);
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61 return method.call(frame.pack(), receiverBasicObject, blockObject, argumentObjects);
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62 }
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63
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64 public UnboxedDispatchNode getDispatch() {
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65 return dispatch;
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66 }
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67
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68 }
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