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/*
 * SonarQube Java
 * Copyright (C) 2012-2024 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 Sonar Source-Available License Version 1, as published by SonarSource SA.
 *
 * 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 Sonar Source-Available License for more details.
 *
 * You should have received a copy of the Sonar Source-Available License
 * along with this program; if not, see https://sonarsource.com/license/ssal/
 */
package org.sonar.java.model.statement;

import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.annotation.Nullable;
import org.sonarsource.analyzer.commons.collections.ListUtils;
import org.sonar.java.model.InternalSyntaxToken;
import org.sonar.java.model.JavaTree;
import org.sonar.plugins.java.api.tree.ExpressionTree;
import org.sonar.plugins.java.api.tree.IfStatementTree;
import org.sonar.plugins.java.api.tree.StatementTree;
import org.sonar.plugins.java.api.tree.SyntaxToken;
import org.sonar.plugins.java.api.tree.Tree;
import org.sonar.plugins.java.api.tree.TreeVisitor;

public class IfStatementTreeImpl extends JavaTree implements IfStatementTree {

  private InternalSyntaxToken ifKeyword;
  private InternalSyntaxToken openParenToken;
  private ExpressionTree condition;
  private InternalSyntaxToken closeParenToken;
  private StatementTree thenStatement;
  @Nullable
  private final InternalSyntaxToken elseKeyword;
  @Nullable
  private final StatementTree elseStatement;

  public IfStatementTreeImpl(InternalSyntaxToken ifKeyword, InternalSyntaxToken openParenToken, ExpressionTree condition, InternalSyntaxToken closeParenToken,
    StatementTree thenStatement, @Nullable InternalSyntaxToken elseKeyword, @Nullable StatementTree elseStatement) {
    this.ifKeyword = ifKeyword;
    this.openParenToken = openParenToken;
    this.condition = condition;
    this.closeParenToken = closeParenToken;
    this.thenStatement = thenStatement;
    this.elseKeyword = elseKeyword;
    this.elseStatement = elseStatement;
  }

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

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

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

  @Override
  public ExpressionTree condition() {
    return condition;
  }

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

  @Override
  public StatementTree thenStatement() {
    return thenStatement;
  }

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

  @Nullable
  @Override
  public StatementTree elseStatement() {
    return elseStatement;
  }

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

  @Override
  public List children() {
    return ListUtils.concat(
      Arrays.asList(ifKeyword, openParenToken, condition, closeParenToken, thenStatement),
      elseKeyword != null ? Arrays.asList(elseKeyword, elseStatement) : Collections.emptyList());
  }
}