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
017package org.jetbrains.jet.lang.resolve.calls.model;
018
019import org.jetbrains.annotations.NotNull;
020import org.jetbrains.annotations.Nullable;
021import org.jetbrains.jet.lang.psi.JetExpression;
022import org.jetbrains.jet.lang.psi.ValueArgument;
023
024import java.util.Collections;
025import java.util.List;
026
027public 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        JetExpression expression = valueArgument.getArgumentExpression();
050        return expression == null ? "no expression" : expression.getText();
051    }
052}