| /******************************************************************************* |
| * Copyright (c) 2005, 2016 IBM Corporation and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v1.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v10.html |
| * |
| *******************************************************************************/ |
| package org.eclipse.dltk.ruby.typeinference.evaluators; |
| |
| import org.eclipse.dltk.ruby.typeinference.RubyTypeInferencingUtils; |
| import org.eclipse.dltk.ti.GoalState; |
| import org.eclipse.dltk.ti.IInstanceContext; |
| import org.eclipse.dltk.ti.ISourceModuleContext; |
| import org.eclipse.dltk.ti.goals.ExpressionTypeGoal; |
| import org.eclipse.dltk.ti.goals.IGoal; |
| import org.eclipse.dltk.ti.types.IEvaluatedType; |
| |
| public class SelfReferenceEvaluator extends RubyMixinGoalEvaluator { |
| |
| private IEvaluatedType result; |
| |
| public SelfReferenceEvaluator(IGoal goal) { |
| super(goal); |
| } |
| |
| private ExpressionTypeGoal getTypedGoal() { |
| return (ExpressionTypeGoal) goal; |
| } |
| |
| private ISourceModuleContext getTypedContext() { |
| return (ISourceModuleContext) goal.getContext(); |
| } |
| |
| @Override |
| public Object produceResult() { |
| return result; |
| } |
| |
| @Override |
| public IGoal[] init() { |
| ISourceModuleContext typedContext = getTypedContext(); |
| if (typedContext instanceof IInstanceContext) { |
| result = ((IInstanceContext) typedContext).getInstanceType(); |
| } else { |
| ExpressionTypeGoal typedGoal = getTypedGoal(); |
| result = RubyTypeInferencingUtils.determineSelfClass(mixinModel, |
| typedContext.getSourceModule(), typedContext.getRootNode(), |
| typedGoal.getExpression().sourceStart()); |
| } |
| // TODO: check if static self type is a descendent of the type from |
| // InstanceContext (and use the descendent in this case) |
| // Assert.isTrue(result != null); |
| return IGoal.NO_GOALS; |
| } |
| |
| @Override |
| public IGoal[] subGoalDone(IGoal subgoal, Object result, GoalState state) { |
| return IGoal.NO_GOALS; |
| } |
| |
| } |