/*
* 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 org.sonar.check.Rule;
import org.sonar.java.model.expression.BinaryExpressionTreeImpl;
import org.sonar.plugins.java.api.JavaFileScanner;
import org.sonar.plugins.java.api.JavaFileScannerContext;
import org.sonar.plugins.java.api.tree.BaseTreeVisitor;
import org.sonar.plugins.java.api.tree.BinaryExpressionTree;
import org.sonar.plugins.java.api.tree.Tree;
@Rule(key = "S2164")
public class MathOnFloatCheck extends BaseTreeVisitor implements JavaFileScanner {
private JavaFileScannerContext context;
@Override
public void scanFile(JavaFileScannerContext context) {
this.context = context;
scan(context.getTree());
}
@Override
public void visitBinaryExpression(BinaryExpressionTree tree) {
if (tree.is(Tree.Kind.PLUS, Tree.Kind.MINUS, Tree.Kind.MULTIPLY, Tree.Kind.DIVIDE)) {
BinaryExpressionTreeImpl expressionTree = (BinaryExpressionTreeImpl) tree;
if (expressionTree.symbolType().is("float")) {
context.reportIssue(this, tree, "Use a \"double\" or \"BigDecimal\" instead.");
// do not look for other issues in sub-tree
return;
}
}
super.visitBinaryExpression(tree);
}
}