build/tincan.js
function XUserDefinedEncoder(options) {
    var fatal = options.fatal;
    /**
     * @param {Stream} stream Input stream.
     * @param {number} code_point Next code point read from the stream.
     * @return {(number|!Array.<number>)} Byte(s) to emit.
     */
    this.handler = function(stream, code_point) {
      // 1.If code point is end-of-stream, return finished.
      if (code_point === end_of_stream)
        return finished;

      // 2. If code point is an ASCII code point, return a byte whose
      // value is code point.
      if (isASCIICodePoint(code_point))
        return code_point;

      // 3. If code point is in the range U+F780 to U+F7FF, return a
      // byte whose value is code point − 0xF780 + 0x80.
      if (inRange(code_point, 0xF780, 0xF7FF))
        return code_point - 0xF780 + 0x80;

      // 4. Return error with code point.
      return encoderError(code_point);
    };
  }
function XUserDefinedEncoder(options) {
    var fatal = options.fatal;
    /**
     * @param {Stream} stream Input stream.
     * @param {number} code_point Next code point read from the stream.
     * @return {(number|!Array.<number>)} Byte(s) to emit.
     */
    this.handler = function(stream, code_point) {
      // 1.If code point is end-of-stream, return finished.
      if (code_point === end_of_stream)
        return finished;

      // 2. If code point is an ASCII code point, return a byte whose
      // value is code point.
      if (isASCIICodePoint(code_point))
        return code_point;

      // 3. If code point is in the range U+F780 to U+F7FF, return a
      // byte whose value is code point − 0xF780 + 0x80.
      if (inRange(code_point, 0xF780, 0xF7FF))
        return code_point - 0xF780 + 0x80;

      // 4. Return error with code point.
      return encoderError(code_point);
    };
  }
function XUserDefinedEncoder ( options ) { var fatal = options . fatal ; /**
     * @param {Stream} stream Input stream.
     * @param {number} code_point Next code point read from the stream.
     * @return {(number|!Array.<number>)} Byte(s) to emit.
     */ this . handler = function ( stream , code_point ) { // 1.If code point is end-of-stream, return finished. if ( code_point === end_of_stream ) return finished ; // 2. If code point is an ASCII code point, return a byte whose // value is code point. if ( isASCIICodePoint ( code_point ) ) return code_point ; // 3. If code point is in the range U+F780 to U+F7FF, return a // byte whose value is code point − 0xF780 + 0x80. if ( inRange ( code_point , 0xF780 , 0xF7FF ) ) return code_point - 0xF780 + 0x80 ; // 4. Return error with code point. return encoderError ( code_point ) ; } ; }
15.5.2 x-user-defined encoder 
@constructor
@implements {Encoder}
@param {{fatal: boolean}} options
15 . 5 . 2 x - user - defined encoder