| /******************************************************************************* |
| * 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; |
| |
| import org.eclipse.dltk.evaluation.types.UnknownType; |
| import org.eclipse.dltk.ti.DefaultTypeInferencer; |
| import org.eclipse.dltk.ti.EvaluatorStatistics; |
| import org.eclipse.dltk.ti.IPruner; |
| import org.eclipse.dltk.ti.goals.AbstractTypeGoal; |
| import org.eclipse.dltk.ti.goals.IGoal; |
| import org.eclipse.dltk.ti.types.IEvaluatedType; |
| |
| public class RubyTypeInferencer extends DefaultTypeInferencer { |
| |
| private class SimplestRubyPruner implements IPruner { |
| |
| private long timeStart; |
| private final long timeLimit; |
| |
| public SimplestRubyPruner(long timeLimit) { |
| super(); |
| this.timeLimit = timeLimit; |
| } |
| |
| @Override |
| public void init() { |
| this.timeStart = System.currentTimeMillis(); |
| } |
| |
| @Override |
| public boolean prune(IGoal goal, EvaluatorStatistics stat) { |
| long currentTime = System.currentTimeMillis(); |
| if (timeLimit != -1 && currentTime - timeStart > timeLimit) |
| return true; |
| if (stat != null) { |
| if (stat.getSubGoalsDoneSuccessful() > 5) |
| return true; |
| } |
| return false; |
| } |
| |
| } |
| |
| public RubyTypeInferencer() { |
| super(new RubyEvaluatorFactory()); |
| } |
| |
| @Override |
| public synchronized IEvaluatedType evaluateType(AbstractTypeGoal goal, |
| int timeLimit) { |
| IEvaluatedType type = super.evaluateType(goal, new SimplestRubyPruner( |
| timeLimit)); |
| if (type == null || type instanceof UnknownType) { |
| // All things in ruby are instances of Object |
| type = new RubyClassType("Object"); //$NON-NLS-1$ |
| } |
| return type; |
| } |
| |
| @Override |
| public synchronized Object evaluateGoal(IGoal goal, IPruner pruner) { |
| return super.evaluateGoal(goal, pruner); |
| } |
| |
| } |