sourcetext.h

Go to the documentation of this file.

/* Copyright (C) 2012 Oliver Lemke <olemke@core-dump.info>

   This program is free software; you can redistribute it and/or modify it
   under the terms of the GNU General Public License as published by the
   Free Software Foundation; either version 2, 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 General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
   USA. */

#ifndef sourcetext_h
#define sourcetext_h

#include "array.h"
#include "exceptions.h"
#include "mystring.h"

class SourceText {
 public:
  SourceText()
      : mLine(0), mColumn(0), mLineBreak(false) { /* Nothing to be done here. */
  }

  void AppendFile(const String& name);

  char Current() {
    if (reachedEot()) throw Eot("", this->File(), this->Line(), this->Column());

    return mText[mLine][mColumn];
  }

  bool reachedEot() {
    return (mLine >= mText.nelem() ||
            (mLine == mText.nelem() - 1 && mColumn >= mText[mLine].nelem()));
  }

  void AdvanceChar();

  void AdvanceLine();

  const String& File();

  Index Line() { return GetSourceLine(mLine); };

  Index MarkedLine() { return GetSourceLine(mMarkedLine); };

  Index LineRaw() { return mLine; }

  Index ColumnRaw() { return mColumn; }

  Index Column() { return mColumn + 1; }

  Index MarkedColumn() { return mMarkedColumn + 1; }

  void SetPosition(Index line, Index column) {
    mLine = line;
    mColumn = column;
  }

  void SetMark() {
    mMarkedLine = mLine;
    mMarkedColumn = mColumn;
  }

  void Init();

  bool& LineBreak() { return mLineBreak; }

  bool LineBreak() const { return mLineBreak; }

  friend std::ostream& operator<<(std::ostream& os, const SourceText& text);

 private:
  Index GetSourceLine(const Index line);

  ArrayOfString mText;

  Index mLine;

  Index mColumn;

  Index mMarkedLine;

  Index mMarkedColumn;

  ArrayOfIndex mSfLine;

  ArrayOfString mSfName;

  bool mLineBreak;
};

#endif /* sourcetext_h */