Class: Hash

Inherits:
Object show all
Defined in:
opal/stdlib/json.rb,
opal/stdlib/native.rb

Instance Method Summary collapse

Constructor Details

#initialize(defaults = undefined, &block) ⇒ Hash

Returns a new instance of Hash



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# File 'opal/stdlib/native.rb', line 527

def initialize(defaults = undefined, &block)
  %x{
    if (defaults !== undefined && defaults.constructor === Object) {
      var smap = self.$$smap,
          keys = self.$$keys,
          key, value;

      for (key in defaults) {
        value = defaults[key];

        if (value && value.constructor === Object) {
          smap[key] = #{Hash.new(`value`)};
        } else if (value && value.$$is_array) {
          value = value.map(function(item) {
            if (item && item.constructor === Object) {
              return #{Hash.new(`item`)};
            }

            return item;
          });
          smap[key] = value
        } else {
          smap[key] = #{Native(`value`)};
        }

        keys.push(key);
      }

      return self;
    }

    return #{_initialize(defaults, &block)};
  }
end

Instance Method Details

#_initialize ⇒ Object 



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# File 'opal/stdlib/native.rb', line 525

alias_method :_initialize, :initialize

#to_json ⇒ Object 



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# File 'opal/stdlib/json.rb', line 142

def to_json
  %x{
    var result = [];

    for (var i = 0, keys = self.$$keys, length = keys.length, key, value; i < length; i++) {
      key = keys[i];

      if (key.$$is_string) {
        value = self.$$smap[key];
      } else {
        value = key.value;
        key = key.key;
      }

      result.push(#{`key`.to_s.to_json} + ':' + #{`value`.to_json});
    }

    return '{' + result.join(', ') + '}';
  }
end

#to_n ⇒ Object

Public: Returns a JavaScript object with the same keys but calling #to_n on all values.



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# File 'opal/stdlib/native.rb', line 564

def to_n
  %x{
    var result = {},
        keys = self.$$keys,
        smap = self.$$smap,
        key, value;

    for (var i = 0, length = keys.length; i < length; i++) {
      key = keys[i];

      if (key.$$is_string) {
        value = smap[key];
      } else {
        key = key.key;
        value = key.value;
      }

      result[key] = #{Native.try_convert(`value`)};
    }

    return result;
  }
end