Esempio n. 1
0
 @CompilerDirectives.SlowPath
 @Specialization(order = 1)
 public Object getIndex(RubyString string, int index, UndefinedPlaceholder undefined) {
   final String javaString = string.toString();
   final int normalisedIndex = ArrayUtilities.normaliseIndex(javaString.length(), index);
   return getContext().makeString(javaString.charAt(normalisedIndex));
 }
Esempio n. 2
0
    @CompilerDirectives.SlowPath
    @Specialization(order = 2)
    public Object getIndex(RubyString string, FixnumRange range, UndefinedPlaceholder undefined) {
      final String javaString = string.toString();

      final int stringLength = javaString.length();

      if (range.doesExcludeEnd()) {
        final int begin = ArrayUtilities.normaliseIndex(stringLength, range.getBegin());
        final int exclusiveEnd =
            ArrayUtilities.normaliseExclusiveIndex(stringLength, range.getExclusiveEnd());
        return getContext().makeString(javaString.substring(begin, exclusiveEnd));
      } else {
        final int begin = ArrayUtilities.normaliseIndex(stringLength, range.getBegin());
        final int inclusiveEnd =
            ArrayUtilities.normaliseIndex(stringLength, range.getInclusiveEnd());
        return getContext().makeString(javaString.substring(begin, inclusiveEnd + 1));
      }
    }