Package gnu.regexp

Class CharIndexedStringBuffer

java.lang.Object
gnu.regexp.CharIndexedStringBuffer
All Implemented Interfaces:
CharIndexed, Serializable

class CharIndexedStringBuffer extends Object implements CharIndexed, Serializable
  • Constructor Details

    • CharIndexedStringBuffer

      CharIndexedStringBuffer(StringBuffer str, int index)
  • Method Details

    • charAt

      public char charAt(int index)
      Description copied from interface: CharIndexed
      Returns the character at the given offset past the current cursor position in the input. The index of the current position is zero. It is possible for this method to be called with a negative index. This happens when using the '^' operator in multiline matching mode or the '\b' or '\<' word boundary operators. In any case, the lower bound is currently fixed at -2 (for '^' with a two-character newline).
      Specified by:
      charAt in interface CharIndexed
      Parameters:
      index - the offset position in the character field to examine
      Returns:
      the character at the specified index, or the OUT_OF_BOUNDS character defined by this interface.
    • isValid

      public boolean isValid()
      Description copied from interface: CharIndexed
      Returns true if the most recent move() operation placed the cursor position at a valid position in the input.
      Specified by:
      isValid in interface CharIndexed
    • move

      public boolean move(int index)
      Description copied from interface: CharIndexed
      Shifts the input buffer by a given number of positions. Returns true if the new cursor position is valid.
      Specified by:
      move in interface CharIndexed