org.sonar.squidbridge.metrics.ResourceParser.java Source code

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Here is the source code for org.sonar.squidbridge.metrics.ResourceParser.java

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/*
 * SSLR Squid Bridge
 * Copyright (C) 2010-2016 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.squidbridge.metrics;

import org.sonar.squidbridge.test.miniC.MiniCAstScanner;

import org.sonar.squidbridge.api.SourceFile;
import org.sonar.squidbridge.indexer.QueryByType;
import org.sonar.squidbridge.AstScanner;
import org.sonar.squidbridge.SquidAstVisitor;
import com.sonar.sslr.api.Grammar;
import org.apache.commons.io.FileUtils;

import java.io.File;

import static org.fest.assertions.Assertions.assertThat;

public class ResourceParser {

    public static SourceFile scanFile(String filePath, SquidAstVisitor<Grammar>... visitors) {
        return scanFile(filePath, false, visitors);
    }

    public static SourceFile scanFileIgnoreHeaderComments(String filePath, SquidAstVisitor<Grammar>... visitors) {
        return scanFile(filePath, true, visitors);
    }

    private static SourceFile scanFile(String filePath, boolean ignoreHeaderComments,
            SquidAstVisitor<Grammar>... visitors) {
        AstScanner<Grammar> scanner = ignoreHeaderComments ? MiniCAstScanner.createIgnoreHeaderComments(visitors)
                : MiniCAstScanner.create(visitors);
        File file = FileUtils.toFile(ResourceParser.class.getResource(filePath));
        if (file == null || !file.exists()) {
            throw new IllegalArgumentException("The file located under \"" + filePath + "\" was not found.");
        }
        scanner.scanFile(file);
        assertThat(scanner.getIndex().search(new QueryByType(SourceFile.class)).size()).isEqualTo(1);
        return (SourceFile) scanner.getIndex().search(new QueryByType(SourceFile.class)).iterator().next();
    }

}