| /* |
| * Copyright (C) 2014 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.jack.preprocessor; |
| |
| import com.android.jack.ir.ast.HasModifier; |
| import com.android.jack.ir.ast.JMethod; |
| import com.android.jack.ir.ast.JParameter; |
| import com.android.jack.ir.ast.JType; |
| |
| import java.util.ArrayList; |
| import java.util.Collection; |
| import java.util.Collections; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import javax.annotation.Nonnull; |
| |
| /** |
| * 'method' set. |
| */ |
| public class MethodFilter implements Expression<Collection<JMethod>, Scope> { |
| |
| @Nonnull |
| private final NamePattern name; |
| |
| @Nonnull |
| private Expression<Boolean, HasModifier> modifierExpression = BooleanExpression.getTrue(); |
| |
| @Nonnull |
| private final Expression<Collection<? extends JType>, Scope> returnType; |
| |
| @Nonnull |
| private List<Expression<Collection<? extends JType>, Scope>> argsType = Collections.emptyList(); |
| |
| public MethodFilter( |
| @Nonnull NamePattern name, |
| @Nonnull Expression<Collection<? extends JType>, Scope> returnType) { |
| this.name = name; |
| this.returnType = returnType; |
| } |
| |
| |
| @Override |
| @Nonnull |
| public Collection<JMethod> eval(@Nonnull Scope scope, @Nonnull Context context) { |
| Collection<JMethod> nodes = new ArrayList<JMethod>(); |
| |
| for (Iterator<? extends JMethod> iterator = |
| scope.getNodesByName(JMethod.class, name).iterator(); iterator.hasNext();) { |
| JMethod method = iterator.next(); |
| List<JParameter> params = method.getParams(); |
| if (params.size() == argsType.size()) { |
| SubContext subContext = new SubContext(context); |
| if (modifierExpression.eval(method, subContext).booleanValue()) { |
| SingleTypeScope returnTypeContext = new SingleTypeScope(method.getType()); |
| if (!returnType.eval(returnTypeContext, subContext).isEmpty()) { |
| boolean argsTypeMatched = true; |
| Iterator<Expression<Collection<? extends JType>, Scope>> matchIter = |
| argsType.iterator(); |
| for (Iterator<JParameter> paramIter = params.iterator(); |
| argsTypeMatched && paramIter.hasNext();) { |
| argsTypeMatched = |
| !matchIter.next().eval( |
| new SingleTypeScope(paramIter.next().getType()), subContext).isEmpty(); |
| } |
| if (argsTypeMatched) { |
| nodes.add(method); |
| subContext.push(); |
| } |
| } |
| } |
| |
| } |
| } |
| return nodes; |
| } |
| |
| public void addArg(@Nonnull Expression<Collection<? extends JType>, Scope> arg) { |
| if (argsType.isEmpty()) { |
| argsType = new ArrayList<Expression<Collection<? extends JType>, Scope>>(); |
| } |
| argsType.add(arg); |
| } |
| |
| public void setModifierExpression(@Nonnull Expression<Boolean, HasModifier> expression) { |
| this.modifierExpression = expression; |
| } |
| } |