LongBitsToDoubleOnIntCheck.java example

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sonar-java-master
/*
 * SonarQube Java
 * Copyright (C) 2012-2016 SonarSource SA
 * mailto:contact 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.checks;

import com.google.common.collect.ImmutableList;
import org.sonar.check.Rule;
import org.sonar.java.checks.helpers.MethodsHelper;
import org.sonar.java.checks.methods.AbstractMethodDetection;
import org.sonar.java.matcher.MethodMatcher;
import org.sonar.plugins.java.api.semantic.Type;
import org.sonar.plugins.java.api.tree.MethodInvocationTree;

import java.util.List;

@Rule(key = "S2127")
public class LongBitsToDoubleOnIntCheck extends AbstractMethodDetection {

  @Override
  protected List<MethodMatcher> getMethodInvocationMatchers() {
    return ImmutableList.<MethodMatcher>builder()
      .add(MethodMatcher.create().typeDefinition("java.lang.Double").name("longBitsToDouble").addParameter("long"))
      .build();
  }

  @Override
  protected void onMethodInvocationFound(MethodInvocationTree mit) {
    Type symbolType = mit.arguments().get(0).symbolType();
    if (!(symbolType.is("long") || symbolType.is("java.lang.Long"))) {
      reportIssue(MethodsHelper.methodName(mit), "Remove this \"Double.longBitsToDouble\" call.");
    }
  }
}