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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.control.*;
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17 import com.oracle.truffle.ruby.runtime.core.*;
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18 import com.oracle.truffle.ruby.runtime.methods.*;
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19 import com.oracle.truffle.ruby.runtime.objects.*;
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20
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21 /**
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22 * Any node in the dispatch chain.
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23 */
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24 public class DispatchNode extends Node {
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25
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26 private final RubyContext context;
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27
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28 public DispatchNode(RubyContext context, SourceSection sourceSection) {
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29 super(sourceSection);
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30
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31 assert context != null;
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32 assert sourceSection != null;
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33
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34 this.context = context;
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35 }
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36
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37 /**
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38 * Get the depth of this node in the dispatch chain. The first node below
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39 * {@link DispatchHeadNode} is at depth 1.
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40 */
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41 public int getDepth() {
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42 int depth = 1;
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43 Node parent = this.getParent();
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44
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45 while (!(parent instanceof DispatchHeadNode)) {
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46 parent = parent.getParent();
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47 depth++;
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48 }
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49
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50 return depth;
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51 }
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52
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53 public Object respecialize(String reason, VirtualFrame frame, Object receiverObject, RubyProc blockObject, Object... argumentsObjects) {
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54 CompilerAsserts.neverPartOfCompilation();
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55
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56 final int depth = getDepth();
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57 final DispatchHeadNode head = (DispatchHeadNode) NodeUtil.getNthParent(this, depth);
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58
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59 return head.respecialize(frame, reason, receiverObject, blockObject, argumentsObjects);
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60 }
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61
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62 /**
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63 * The central point for method lookup.
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64 */
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65 protected RubyMethod lookup(VirtualFrame frame, RubyBasicObject receiverBasicObject, String name) {
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66 final RubyMethod method = receiverBasicObject.getLookupNode().lookupMethod(name);
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67
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68 final RubyBasicObject self = context.getCoreLibrary().box(frame.getArguments(RubyArguments.class).getSelf());
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69
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70 if (method == null || method.isUndefined()) {
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71 CompilerDirectives.transferToInterpreter();
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72 throw new RaiseException(context.getCoreLibrary().nameErrorNoMethod(name, receiverBasicObject.toString()));
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73 }
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74
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75 if (!method.isVisibleTo(self)) {
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76 CompilerDirectives.transferToInterpreter();
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77 throw new RaiseException(context.getCoreLibrary().noMethodError(name, receiverBasicObject.toString()));
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78 }
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79
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80 return method;
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81 }
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82
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83 public RubyContext getContext() {
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84 return context;
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85 }
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86
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87 }
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