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.resolve.calls.model;
018    
019    import org.jetbrains.annotations.NotNull;
020    import org.jetbrains.annotations.Nullable;
021    import org.jetbrains.kotlin.psi.KtExpression;
022    import org.jetbrains.kotlin.psi.ValueArgument;
023    
024    import java.util.Collections;
025    import java.util.List;
026    
027    public class ExpressionValueArgument implements ResolvedValueArgument {
028        private final ValueArgument valueArgument;
029    
030        public ExpressionValueArgument(@Nullable ValueArgument valueArgument) {
031            this.valueArgument = valueArgument;
032        }
033    
034        // Nullable when something like f(a, , b) was in the source code
035        @Nullable
036        public ValueArgument getValueArgument() {
037            return valueArgument;
038        }
039    
040        @NotNull
041        @Override
042        public List<ValueArgument> getArguments() {
043            if (valueArgument == null) return Collections.emptyList();
044            return Collections.singletonList(valueArgument);
045        }
046    
047        @Override
048        public String toString() {
049            KtExpression expression = valueArgument.getArgumentExpression();
050            return expression == null ? "no expression" : expression.getText();
051        }
052    }