text: /**
   * Base class for pretty printing for expectation results.
   */
  jasmine.PrettyPrinter = function() {
    this.ppNestLevel_ = 0;
  };
  
  /**
   * Formats a value in a nice, human-readable string.
   *
   * @param value
   */
  jasmine.PrettyPrinter.prototype.format = function(value) {
    if (this.ppNestLevel_ > 40) {
      throw new Error('jasmine.PrettyPrinter: format() nested too deeply!');
    }
  
    this.ppNestLevel_++;
    try {
      if (value === jasmine.undefined) {
        this.emitScalar('undefined');
      } else if (value === null) {
        this.emitScalar('null');
      } else if (value === jasmine.getGlobal()) {
        this.emitScalar('<global>');
      } else if (value instanceof jasmine.Matchers.Any) {
        this.emitScalar(value.toString());
      } else if (typeof value === 'string') {
        this.emitString(value);
      } else if (jasmine.isSpy(value)) {
        this.emitScalar("spy on " + value.identity);
      } else if (value instanceof RegExp) {
        this.emitScalar(value.toString());
      } else if (typeof value === 'function') {
        this.emitScalar('Function');
      } else if (typeof value.nodeType === 'number') {
        this.emitScalar('HTMLNode');
      } else if (value instanceof Date) {
        this.emitScalar('Date(' + value + ')');
      } else if (value.__Jasmine_been_here_before__) {
        this.emitScalar('<circular reference: ' + (jasmine.isArray_(value) ? 'Array' : 'Object') + '>');
      } else if (jasmine.isArray_(value) || typeof value == 'object') {
        value.__Jasmine_been_here_before__ = true;
        if (jasmine.isArray_(value)) {
          this.emitArray(value);
        } else {
          this.emitObject(value);
        }
        delete value.__Jasmine_been_here_before__;
      } else {
        this.emitScalar(value.toString());
      }
    } finally {
      this.ppNestLevel_--;
    }
  };
  
  jasmine.PrettyPrinter.prototype.iterateObject = function(obj, fn) {
    for (var property in obj) {
      if (property == '__Jasmine_been_here_before__') continue;
      fn(property, obj.__lookupGetter__ ? (obj.__lookupGetter__(property) != null) : false);
    }
  };
  
  jasmine.PrettyPrinter.prototype.emitArray = jasmine.unimplementedMethod_;
  jasmine.PrettyPrinter.prototype.emitObject = jasmine.unimplementedMethod_;
  jasmine.PrettyPrinter.prototype.emitScalar = jasmine.unimplementedMethod_;
  jasmine.PrettyPrinter.prototype.emitString = jasmine.unimplementedMethod_;
  
  jasmine.StringPrettyPrinter = function() {
    jasmine.PrettyPrinter.call(this);
  
    this.string = '';
  };
  jasmine.util.inherit(jasmine.StringPrettyPrinter, jasmine.PrettyPrinter);
  
  jasmine.StringPrettyPrinter.prototype.emitScalar = function(value) {
    this.append(value);
  };
  
  jasmine.StringPrettyPrinter.prototype.emitString = function(value) {
    this.append("'" + value + "'");
  };
  
  jasmine.StringPrettyPrinter.prototype.emitArray = function(array) {
    this.append('[ ');
    for (var i = 0; i < array.length; i++) {
      if (i > 0) {
        this.append(', ');
      }
      this.format(array[i]);
    }
    this.append(' ]');
  };
  
  jasmine.StringPrettyPrinter.prototype.emitObject = function(obj) {
    var self = this;
    this.append('{ ');
    var first = true;
  
    this.iterateObject(obj, function(property, isGetter) {
      if (first) {
        first = false;
      } else {
        self.append(', ');
      }
  
      self.append(property);
      self.append(' : ');
      if (isGetter) {
        self.append('<getter>');
      } else {
        self.format(obj[property]);
      }
    });
  
    this.append(' }');
  };
  
  jasmine.StringPrettyPrinter.prototype.append = function(value) {
    this.string += value;
  };
  