/**
 * Copyright (C) 2010 STMicroelectronics
 * Copyright (C) 2013 Schneider-Electric
 *
 * This file is part of "Mind Compiler" 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, see <http://www.gnu.org/licenses/>.
 *
 * Contact: mind@ow2.org
 *
 * Authors: Matthieu Leclercq
 * Contributors: Stephane Seyvoz
 */

package org.ow2.mind.preproc.parser;

import java.io.PrintStream;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.antlr.runtime.Parser;
import org.antlr.runtime.RecognitionException;
import org.antlr.runtime.RecognizerSharedState;
import org.antlr.runtime.TokenStream;
import org.ow2.mind.error.ErrorManager;
import org.ow2.mind.preproc.CPLChecker;

public abstract class AbstractCPLParser extends Parser {

  static final Pattern sourceLinePattern = Pattern
                                             .compile("#(\\ |\\t)*(line(\\ |\\t)*)?(\\d+)\"(.*)\"");
  static final int     lineIndex         = 4;
  static final int     fileIndex         = 5;

  public void processSourceLine(final String token) {
    final Matcher matcher = sourceLinePattern.matcher(token);
    final int line = Integer.parseInt(matcher.group(lineIndex));
    final String file = matcher.group(fileIndex);

    // To be considered: keep latest processed file String in memory
    // to contextualize line info ?
    if (file != null)
      // standard behavior
      System.out.printf("Line:%d File:%s\n", line, file);
    else
      // alternative needed by some (rare) families of compilers (not writing
      // file info in certain places)
      System.out.printf("Line:%d\n", line);
  }

  public AbstractCPLParser(final TokenStream input,
      final RecognizerSharedState state) {
    super(input, state);
  }

  public AbstractCPLParser(final TokenStream input) {
    super(input);
  }

  protected PrintStream  out           = System.out;
  protected PrintStream  headerOut     = null;
  protected boolean      singletonMode = false;
  protected CPLChecker   cplChecker    = null;
  protected ErrorManager errorManager  = null;

  public void setOutputStream(final PrintStream out) {
    this.out = out;
  }

  public void setHeaderOutputStream(final PrintStream out) {
    this.headerOut = out;
  }

  public void setSingletonMode(final boolean singletonMode) {
    this.singletonMode = singletonMode;
  }

  public void setCplChecker(final CPLChecker cplChecker) {
    this.cplChecker = cplChecker;
  }

  public void setErrorManager(final ErrorManager errorManager) {
    this.errorManager = errorManager;
  }

  public abstract void preprocess() throws RecognitionException;
}