LogMessageConcatenationCheck.java

/*
 * Copyright (c) 2014 Cisco Systems, Inc. and others.  All rights reserved.
 *
 * This program and the accompanying materials are made available under the
 * terms of the Eclipse Public License v1.0 which accompanies this distribution,
 * and is available at http://www.eclipse.org/legal/epl-v10.html
 */

package org.opendaylight.yangtools.checkstyle;

import com.puppycrawl.tools.checkstyle.api.AbstractCheck;
import com.puppycrawl.tools.checkstyle.api.DetailAST;
import com.puppycrawl.tools.checkstyle.api.TokenTypes;

public class LogMessageConcatenationCheck extends AbstractCheck {

    private static final String LOG_MESSAGE = "Log message contains string concatenation.";

    @Override
    public int[] getDefaultTokens() {
        return new int[]{TokenTypes.METHOD_CALL};
    }

    @Override
    public void visitToken(DetailAST ast) {
        final String methodName = CheckLoggingUtil.getMethodName(ast);
        if (CheckLoggingUtil.isLogMethod(methodName)) {
            DetailAST plus = ast.findFirstToken(TokenTypes.ELIST).getFirstChild().findFirstToken(TokenTypes.PLUS);
            if (plus != null) {
                while (plus.getChildCount(TokenTypes.PLUS) != 0) {
                    plus = plus.findFirstToken(TokenTypes.PLUS);
                }
                if (plus.getChildCount(TokenTypes.STRING_LITERAL) != 2) {
                    log(ast.getLineNo(), LOG_MESSAGE);
                }
            }
        }
    }
}