be.i8c.codequality.sonar.plugins.sag.webmethods.flow.sslr.FlowParser.java Source code

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Here is the source code for be.i8c.codequality.sonar.plugins.sag.webmethods.flow.sslr.FlowParser.java

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/*
 * i8c
 * Copyright (C) 2016 i8c NV
 * mailto:contact AT i8c DOT be
 *
 * 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 be.i8c.codequality.sonar.plugins.sag.webmethods.flow.sslr;

import com.sonar.sslr.api.AstNode;
import com.sonar.sslr.api.Grammar;
import com.sonar.sslr.impl.Parser;
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.nio.charset.Charset;

public class FlowParser {
    private static final Parser<Grammar> P = FlowParser.create();
    private static FlowConfiguration conf;

    private FlowParser() {
    }

    public static Parser<Grammar> create(FlowConfiguration conf) {
        FlowParser.conf = conf;
        return Parser.builder(FlowGrammar.create()).withLexer(FlowLexer.create(conf)).build();
    }

    public static Parser<Grammar> create() {
        FlowParser.conf = new FlowConfiguration(Charset.defaultCharset());
        return Parser.builder(FlowGrammar.create()).withLexer(FlowLexer.create(FlowParser.conf)).build();
    }

    public static AstNode parseFile(String filePath) {
        AstNode astNode;
        File file = FileUtils.getFile(filePath);
        if (file == null || !file.exists()) {
            throw new AssertionError("The file \"" + filePath + "\" does not exist.");
        }
        astNode = P.parse(file);
        return astNode;
    }

    public static AstNode parseString(String source) {
        return P.parse(source);
    }

}