001    /*
002     * Copyright 2010-2015 JetBrains s.r.o.
003     *
004     * Licensed under the Apache License, Version 2.0 (the "License");
005     * you may not use this file except in compliance with the License.
006     * You may obtain a copy of the License at
007     *
008     * http://www.apache.org/licenses/LICENSE-2.0
009     *
010     * Unless required by applicable law or agreed to in writing, software
011     * distributed under the License is distributed on an "AS IS" BASIS,
012     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013     * See the License for the specific language governing permissions and
014     * limitations under the License.
015     */
016    
017    package org.jetbrains.kotlin.js.translate.intrinsic.functions.factories;
018    
019    import com.google.common.base.Predicate;
020    import com.google.common.collect.Lists;
021    import com.intellij.openapi.util.Pair;
022    import org.jetbrains.annotations.NotNull;
023    import org.jetbrains.annotations.Nullable;
024    import org.jetbrains.kotlin.descriptors.FunctionDescriptor;
025    import org.jetbrains.kotlin.js.translate.intrinsic.functions.basic.BuiltInPropertyIntrinsic;
026    import org.jetbrains.kotlin.js.translate.intrinsic.functions.basic.FunctionIntrinsic;
027    
028    import java.util.List;
029    
030    public abstract class CompositeFIF implements FunctionIntrinsicFactory {
031        @NotNull
032        public static final BuiltInPropertyIntrinsic LENGTH_PROPERTY_INTRINSIC = new BuiltInPropertyIntrinsic("length");
033    
034        @NotNull
035        private final List<Pair<Predicate<FunctionDescriptor>, FunctionIntrinsic>> patternsAndIntrinsics = Lists.newArrayList();
036    
037        protected CompositeFIF() {
038        }
039    
040        @Nullable
041        @Override
042        public FunctionIntrinsic getIntrinsic(@NotNull FunctionDescriptor descriptor) {
043            for (Pair<Predicate<FunctionDescriptor>, FunctionIntrinsic> entry : patternsAndIntrinsics) {
044                if (entry.first.apply(descriptor)) {
045                    return entry.second;
046                }
047            }
048            return null;
049        }
050    
051        protected void add(@NotNull Predicate<FunctionDescriptor> pattern, @NotNull FunctionIntrinsic intrinsic) {
052            patternsAndIntrinsics.add(Pair.create(pattern, intrinsic));
053        }
054     }