#include "zen/config.hpp"

#include "bolt/Text.hpp"
#include "bolt/ByteString.hpp"

namespace bolt {

TextFile::TextFile(ByteString Path, ByteString Text):
  Path(Path), Text(Text) {
    LineOffsets.push_back(0);
    for (size_t I = 0; I < Text.size(); I++) {
      auto Chr = Text[I];
      if (Chr == '\n') {
        LineOffsets.push_back(I+1);
      }
    }
    LineOffsets.push_back(Text.size());
  }

size_t TextFile::getLineCount() const {
  return LineOffsets.size();
}

size_t TextFile::getStartOffset(size_t Line) const {
  return LineOffsets[Line-1];
}

size_t TextFile::getLine(size_t Offset) const {
  ZEN_ASSERT(Offset < Text.size());
  for (size_t I = 0; I < LineOffsets.size(); ++I) {
    if (LineOffsets[I] > Offset) {
      return I;
    }
  }
  ZEN_UNREACHABLE
}

size_t TextFile::getColumn(size_t Offset) const {
  auto Line = getLine(Offset);
  auto StartOffset = getStartOffset(Line);
  return Offset - StartOffset + 1 ;
}

ByteString TextFile::getPath() const {
  return Path;
}

ByteString TextFile::getText() const {
  return Text;
}

}