// There is a set of methods for each positional argument, with the following
  // general form:
  //
  // void set_argN_data(void* data)
  //   Sets the buffer of type T for positional argument N. May be called in
  //   any AllocMode. Must be called before Run to have an effect. Must be
  //   called in AllocMode::RESULTS_PROFILES_AND_TEMPS_ONLY for each positional
  //   argument, to set the argument buffers.
  //

    b.clear();
  }

  static void flip(Buffer b) {
    b.flip();
  }

  static void limit(Buffer b, int limit) {
    b.limit(limit);
  }

  static void position(Buffer b, int position) {
    b.position(position);
  }

  private Java8Compatibility() {}

    b.clear();
  }

  static void flip(Buffer b) {
    b.flip();
  }

  static void limit(Buffer b, int limit) {
    b.limit(limit);
  }

  static void position(Buffer b, int position) {
    b.position(position);
  }

  private Java8Compatibility() {}

	return ctxt.PosTable.Pos(xpos)
}

// AllPos invokes do with every position in the inlining call stack for xpos,
// from outermost to innermost. That is, xpos corresponds to f inlining g inlining h,
// AllPos invokes do with the position in f, then the position in g, then the position in h.
func (ctxt *Link) AllPos(xpos src.XPos, do func(src.Pos)) {
	pos := ctxt.InnermostPos(xpos)

	token.RBRACE:    true,
}

// safePos returns a valid file position for a given position: If pos
// is valid to begin with, safePos returns pos. If pos is out-of-range,
// safePos returns the EOF position.
//
// This is hack to work around "artificial" end positions in the AST which
// are computed by adding 1 to (presumably valid) token positions. If the
// token positions are invalid due to parse errors, the resulting end position

    b.flip();
  }

  static void limit(Buffer b, int limit) {
    b.limit(limit);
  }

  static void mark(Buffer b) {
    b.mark();
  }

  static void position(Buffer b, int position) {
    b.position(position);
  }

  static void reset(Buffer b) {
    b.reset();
  }

  private Java8Compatibility() {}

	"unicode"
	"unicode/utf8"
)

// Position is a value that represents a source position.
// A position is valid if Line > 0.
type Position struct {
	Filename string // filename, if any
	Offset   int    // byte offset, starting at 0
	Line     int    // line number, starting at 1
	Column   int    // column number, starting at 1 (character count per line)
}

// IsValid reports whether the position is valid.

// The position Pos, if valid, points to the beginning of
// the offending token, and the error condition is described
// by Msg.
type Error struct {
	Pos token.Position
	Msg string
}

// Error implements the error interface.
func (e Error) Error() string {
	if e.Pos.Filename != "" || e.Pos.IsValid() {
		// don't print "<unknown position>"

    b.clear();
  }

  static void flip(Buffer b) {
    b.flip();
  }

  static void limit(Buffer b, int limit) {
    b.limit(limit);
  }

  static void position(Buffer b, int position) {
    b.position(position);
  }

  private Java8Compatibility() {}

    b.flip();
  }

  static void limit(Buffer b, int limit) {
    b.limit(limit);
  }

  static void mark(Buffer b) {
    b.mark();
  }

  static void position(Buffer b, int position) {
    b.position(position);
  }

  static void reset(Buffer b) {
    b.reset();
  }

  private Java8Compatibility() {}