Class: Hash

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

Overview

:nodoc:

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 538

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

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

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

            return #{Native(`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 536

alias _initialize initialize

#pretty_print(q) ⇒ Object

:nodoc:



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# File 'opal/stdlib/pp.rb', line 365

def pretty_print(q) # :nodoc:
  q.pp_hash self
end

#pretty_print_cycle(q) ⇒ Object

:nodoc:



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# File 'opal/stdlib/pp.rb', line 369

def pretty_print_cycle(q) # :nodoc:
  q.text(empty? ? '{}' : '{...}')
end

#ruby2_keywords_hash(hash) ⇒ Object

call-seq: Hash.ruby2_keywords_hash(hash) -> new_hash

Duplicates a given hash and returns the new hash.



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# File 'opal/stdlib/ruby2_keywords.rb', line 56

def ruby2_keywords_hash(hash)
  hash.dup
end

#ruby2_keywords_hash?(hash) ⇒ Boolean

call-seq: Hash.ruby2_keywords_hash?(hash) -> false

Returns false.

Returns:



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# File 'opal/stdlib/ruby2_keywords.rb', line 46

def ruby2_keywords_hash?(hash)
  false
end

#to_json ⇒ Object 



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# File 'opal/stdlib/json.rb', line 154

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

all values.

Returns:

  • a JavaScript object with the same keys but calling #to_n on



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# File 'opal/stdlib/native.rb', line 581

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`, `value`)};
    }

    return result;
  }
end