001    /*
002     * Copyright 2010-2013 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.k2js.translate.intrinsic.functions.basic;
018    
019    import com.google.dart.compiler.backend.js.ast.JsExpression;
020    import org.jetbrains.annotations.NotNull;
021    import org.jetbrains.annotations.Nullable;
022    import org.jetbrains.k2js.translate.context.TranslationContext;
023    
024    import java.util.List;
025    
026    /**
027     * Base for intrinsics that substitute standard function calls like Int#plus, Float#minus ... etc
028     */
029    public abstract class FunctionIntrinsic {
030    
031        @NotNull
032        public static final FunctionIntrinsic NO_INTRINSIC = new FunctionIntrinsic() {
033            @Override
034            public boolean exists() {
035                return false;
036            }
037    
038            @NotNull
039            @Override
040            public JsExpression apply(@Nullable JsExpression receiver,
041                    @NotNull List<JsExpression> arguments,
042                    @NotNull TranslationContext context) {
043                throw new UnsupportedOperationException("FunctionIntrinsic#NO_INTRINSIC_#apply");
044            }
045        };
046    
047        @NotNull
048        public abstract JsExpression apply(@Nullable JsExpression receiver, @NotNull List<JsExpression> arguments,
049                @NotNull TranslationContext context);
050    
051        public boolean exists() {
052            return true;
053        }
054    }