org.sonar.java.model.expression.LambdaExpressionTreeImpl.java Source code

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Here is the source code for org.sonar.java.model.expression.LambdaExpressionTreeImpl.java

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/*
 * SonarQube Java
 * Copyright (C) 2012-2017 SonarSource SA
 * mailto:info AT sonarsource DOT com
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 3 of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this program; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */
package org.sonar.java.model.expression;

import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import org.sonar.java.ast.parser.JavaLexer;
import org.sonar.java.model.AbstractTypedTree;
import org.sonar.java.model.InternalSyntaxToken;
import org.sonar.plugins.java.api.tree.LambdaExpressionTree;
import org.sonar.plugins.java.api.tree.SyntaxToken;
import org.sonar.plugins.java.api.tree.Tree;
import org.sonar.plugins.java.api.tree.TreeVisitor;
import org.sonar.plugins.java.api.tree.VariableTree;

import javax.annotation.Nullable;
import java.util.Collections;
import java.util.List;

public class LambdaExpressionTreeImpl extends AbstractTypedTree implements LambdaExpressionTree {

    @Nullable
    private final InternalSyntaxToken openParenToken;
    private final List<VariableTree> parameters;
    @Nullable
    private final InternalSyntaxToken closeParenToken;
    private final InternalSyntaxToken arrowToken;
    private final Tree body;

    public LambdaExpressionTreeImpl(@Nullable InternalSyntaxToken openParenToken, List<VariableTree> parameters,
            @Nullable InternalSyntaxToken closeParenToken, InternalSyntaxToken arrowToken, Tree body) {
        super(JavaLexer.LAMBDA_EXPRESSION);
        this.openParenToken = openParenToken;
        this.parameters = parameters;
        this.closeParenToken = closeParenToken;
        this.arrowToken = arrowToken;
        this.body = body;
    }

    @Override
    public Kind kind() {
        return Kind.LAMBDA_EXPRESSION;
    }

    @Nullable
    @Override
    public SyntaxToken openParenToken() {
        return openParenToken;
    }

    @Override
    public List<VariableTree> parameters() {
        return parameters;
    }

    @Nullable
    @Override
    public SyntaxToken closeParenToken() {
        return closeParenToken;
    }

    @Override
    public SyntaxToken arrowToken() {
        return arrowToken;
    }

    @Override
    public Tree body() {
        return body;
    }

    @Override
    public void accept(TreeVisitor visitor) {
        visitor.visitLambdaExpression(this);
    }

    @Override
    public Iterable<Tree> children() {
        boolean hasParentheses = openParenToken != null;
        return Iterables.concat(
                hasParentheses ? Collections.singletonList(openParenToken) : Collections.<Tree>emptyList(),
                parameters,
                hasParentheses ? Collections.singletonList(closeParenToken) : Collections.<Tree>emptyList(),
                Lists.newArrayList(arrowToken, body));
    }

}