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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.methods;
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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.nodes.*;
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16 import com.oracle.truffle.ruby.runtime.*;
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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
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20 /**
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21 * Define a method. That is, store the definition of a method and when executed produce the
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22 * executable object that results.
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23 */
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24 @NodeInfo(shortName = "method-def")
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25 public class MethodDefinitionNode extends RubyNode {
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26
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27 protected final String name;
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28 protected final UniqueMethodIdentifier uniqueIdentifier;
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29
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30 protected final FrameDescriptor frameDescriptor;
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31 protected final RubyRootNode pristineRootNode;
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32
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33 protected final CallTarget callTarget;
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34
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35 protected final boolean requiresDeclarationFrame;
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36
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37 public MethodDefinitionNode(RubyContext context, SourceSection sourceSection, String name, UniqueMethodIdentifier uniqueIdentifier, FrameDescriptor frameDescriptor,
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38 boolean requiresDeclarationFrame, RubyRootNode pristineRootNode, CallTarget callTarget) {
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39 super(context, sourceSection);
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40 this.name = name;
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41 this.uniqueIdentifier = uniqueIdentifier;
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42 this.frameDescriptor = frameDescriptor;
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43 this.requiresDeclarationFrame = requiresDeclarationFrame;
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44 this.pristineRootNode = pristineRootNode;
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45 this.callTarget = callTarget;
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46 }
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47
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48 public RubyMethod executeMethod(VirtualFrame frame) {
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49 CompilerDirectives.transferToInterpreter();
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50
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51 MaterializedFrame declarationFrame;
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52
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53 if (requiresDeclarationFrame) {
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54 declarationFrame = frame.materialize();
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55 } else {
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56 declarationFrame = null;
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57 }
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58
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59 final FrameSlot visibilitySlot = frame.getFrameDescriptor().findFrameSlot(RubyModule.VISIBILITY_FRAME_SLOT_ID);
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60
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61 Visibility visibility;
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62
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63 if (visibilitySlot == null) {
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64 visibility = Visibility.PUBLIC;
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65 } else {
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66 Object visibilityObject;
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67
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68 try {
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69 visibilityObject = frame.getObject(visibilitySlot);
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70 } catch (FrameSlotTypeException e) {
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71 throw new RuntimeException(e);
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72 }
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73
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74 if (visibilityObject instanceof Visibility) {
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75 visibility = (Visibility) visibilityObject;
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76 } else {
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77 visibility = Visibility.PUBLIC;
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78 }
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79 }
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80
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81 final InlinableMethodImplementation methodImplementation = new InlinableMethodImplementation(callTarget, declarationFrame, frameDescriptor, pristineRootNode, false, false);
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82 return new RubyMethod(getSourceSection(), null, uniqueIdentifier, null, name, visibility, false, methodImplementation);
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83 }
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84
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85 @Override
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86 public Object execute(VirtualFrame frame) {
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87 return executeMethod(frame);
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88 }
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89
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90 }
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