Class: Hash

Inherits:
Object show all
Includes:
Enumerable
Defined in:
opal/opal/corelib/hash.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods included from Enumerable

#all?, #any?, #chunk, #collect, #collect_concat, #count, #cycle, #detect, #drop, #drop_while, #each_cons, #each_entry, #each_slice, #each_with_index, #each_with_object, #entries, #enumerator_size, #find_all, #find_index, #first, #grep, #group_by, #inject, #lazy, #max, #max_by, #min, #min_by, #minmax, #minmax_by, #none?, #one?, #partition, #reverse_each, #slice_before, #sort, #sort_by, #take, #take_while, #zip

Constructor Details

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

Returns a new instance of Hash


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# File 'opal/opal/corelib/hash.rb', line 75

def initialize(defaults = undefined, &block)
  %x{
    if (defaults !== undefined && block !== nil) {
      #{raise ArgumentError, 'wrong number of arguments (1 for 0)'}
    }
    self.none = (defaults === undefined ? nil : defaults);
    self.proc = block;
  }
  self
end

Class Method Details

.[](*argv) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 9

def self.[](*argv)
  %x{
    var hash, argc = argv.length, i;

    if (argc === 1) {
      hash = #{Opal.coerce_to?(argv[0], Hash, :to_hash)};
      if (hash !== nil) {
        return #{allocate.merge!(`hash`)};
      }

      argv = #{Opal.coerce_to?(argv[0], Array, :to_ary)};
      if (argv === nil) {
        #{raise ArgumentError, 'odd number of arguments for Hash'}
      }

      argc = argv.length;
      hash = #{allocate};

      for (i = 0; i < argc; i++) {
        if (!argv[i].$$is_array) continue;
        switch(argv[i].length) {
        case 1:
          hash.$store(argv[i][0], nil);
          break;
        case 2:
          hash.$store(argv[i][0], argv[i][1]);
          break;
        default:
          #{raise ArgumentError, "invalid number of elements (#{`argv[i].length`} for 1..2)"}
        }
      }

      return hash;
    }

    if (argc % 2 !== 0) {
      #{raise ArgumentError, 'odd number of arguments for Hash'}
    }

    hash = #{allocate};

    for (i = 0; i < argc; i += 2) {
      hash.$store(argv[i], argv[i + 1]);
    }

    return hash;
  }
end

.allocateObject


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# File 'opal/opal/corelib/hash.rb', line 58

def self.allocate
  %x{
    var hash = new self.$$alloc();

    Opal.hash_init(hash);

    hash.none = nil;
    hash.proc = nil;

    return hash;
  }
end

.try_convert(obj) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 71

def self.try_convert(obj)
  Opal.coerce_to?(obj, Hash, :to_hash)
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql?


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# File 'opal/opal/corelib/hash.rb', line 86

def ==(other)
  %x{
    if (self === other) {
      return true;
    }

    if (!other.$$is_hash) {
      return false;
    }

    if (self.$$keys.length !== other.$$keys.length) {
      return false;
    }

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

      if (key.$$is_string) {
        value = self.$$smap[key];
        other_value = other.$$smap[key];
      } else {
        value = key.value;
        other_value = Opal.hash_get(other, key.key);
      }

      if (other_value === undefined || !value['$eql?'](other_value)) {
        return false;
      }
    }

    return true;
  }
end

#[](key) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 120

def [](key)
  %x{
    var value = Opal.hash_get(self, key);

    if (value !== undefined) {
      return value;
    }

    return self.$default(key);
  }
end

#[]=(key, value) ⇒ Object Also known as: store


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# File 'opal/opal/corelib/hash.rb', line 132

def []=(key, value)
  %x{
    Opal.hash_put(self, key, value);
    return value;
  }
end

#assoc(object) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 139

def assoc(object)
  %x{
    for (var i = 0, keys = self.$$keys, length = keys.length, key; i < length; i++) {
      key = keys[i];

      if (key.$$is_string) {
        if (#{`key` == object}) {
          return [key, self.$$smap[key]];
        }
      } else {
        if (#{`key.key` == object}) {
          return [key.key, key.value];
        }
      }
    }

    return nil;
  }
end

#clearObject


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# File 'opal/opal/corelib/hash.rb', line 159

def clear
  %x{
    Opal.hash_init(self);
    return self;
  }
end

#cloneObject Also known as: dup


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# File 'opal/opal/corelib/hash.rb', line 166

def clone
  %x{
    var hash = new self.$$class.$$alloc();

    Opal.hash_init(hash);
    Opal.hash_clone(self, hash);

    return hash;
  }
end

#default(key = undefined) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 177

def default(key = undefined)
  %x{
    if (key !== undefined && #@proc !== nil) {
      return #@proc.$call(self, key);
    }
    return #@none;
  }
end

#default=(object) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 186

def default=(object)
  %x{
    self.proc = nil;
    self.none = object;

    return object;
  }
end

#default_procObject


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# File 'opal/opal/corelib/hash.rb', line 195

def default_proc
  @proc
end

#default_proc=(proc) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 199

def default_proc=(proc)
  %x{
    if (proc !== nil) {
      proc = #{Opal.coerce_to!(proc, Proc, :to_proc)};

      if (#{proc.lambda?} && #{proc.arity.abs} !== 2) {
        #{raise TypeError, 'default_proc takes two arguments'};
      }
    }

    self.none = nil;
    self.proc = proc;

    return proc;
  }
end

#delete(key, &block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 216

def delete(key, &block)
  %x{
    var value = Opal.hash_delete(self, key);

    if (value !== undefined) {
      return value;
    }

    if (block !== nil) {
      return #{block.call(key)};
    }

    return nil;
  }
end

#delete_if(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 232

def delete_if(&block)
  return enum_for(:delete_if){self.size} unless block

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

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

      obj = block(key, value);

      if (obj === $breaker) {
        return $breaker.$v;
      }

      if (obj !== false && obj !== nil) {
        if (Opal.hash_delete(self, key) !== undefined) {
          length--;
          i--;
        }
      }
    }

    return self;
  }
end

#each(&block) ⇒ Object Also known as: each_pair


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# File 'opal/opal/corelib/hash.rb', line 266

def each(&block)
  return enum_for(:each){self.size} unless block

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

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

      obj = Opal.yield1(block, [key, value]);

      if (obj === $breaker) {
        return $breaker.$v;
      }
    }

    return self;
  }
end

#each_key(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 291

def each_key(&block)
  return enum_for(:each_key){self.size} unless block

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

      if (block(key.$$is_string ? key : key.key) === $breaker) {
        return $breaker.$v;
      }
    }

    return self;
  }
end

#each_value(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 309

def each_value(&block)
  return enum_for(:each_value){self.size} unless block

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

      if (block(key.$$is_string ? self.$$smap[key] : key.value) === $breaker) {
        return $breaker.$v;
      }
    }

    return self;
  }
end

#empty?Boolean

Returns:


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# File 'opal/opal/corelib/hash.rb', line 325

def empty?
  `self.$$keys.length === 0`
end

#fetch(key, defaults = undefined, &block) ⇒ Object

Raises:


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# File 'opal/opal/corelib/hash.rb', line 331

def fetch(key, defaults = undefined, &block)
  %x{
    var value = Opal.hash_get(self, key);

    if (value !== undefined) {
      return value;
    }

    if (block !== nil) {
      value = block(key);

      if (value === $breaker) {
        return $breaker.$v;
      }

      return value;
    }

    if (defaults !== undefined) {
      return defaults;
    }
  }

  raise KeyError, "key not found: #{key.inspect}"
end

#flatten(level = 1) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 357

def flatten(level = 1)
  level = Opal.coerce_to!(level, Integer, :to_int)

  %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);

      if (value.$$is_array) {
        if (level === 1) {
          result.push(value);
          continue;
        }

        result = result.concat(#{`value`.flatten(`level - 2`)});
        continue;
      }

      result.push(value);
    }

    return result;
  }
end

#has_key?(key) ⇒ Boolean Also known as: include?, key?, member?

Returns:


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# File 'opal/opal/corelib/hash.rb', line 392

def has_key?(key)
  `Opal.hash_get(self, key) !== undefined`
end

#has_value?(value) ⇒ Boolean Also known as: value?

Returns:


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# File 'opal/opal/corelib/hash.rb', line 396

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

      if (#{`(key.$$is_string ? self.$$smap[key] : key.value)` == value}) {
        return true;
      }
    }

    return false;
  }
end

#hashObject


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# File 'opal/opal/corelib/hash.rb', line 410

def hash
  %x{
    var top = (Opal.hash_ids === undefined),
        hash_id = self.$object_id(),
        result = ['Hash'],
        key, item;

    try {
      if (top) {
        Opal.hash_ids = {};
      }

      if (Opal.hash_ids.hasOwnProperty(hash_id)) {
        return 'self';
      }

      for (key in Opal.hash_ids) {
        if (Opal.hash_ids.hasOwnProperty(key)) {
          item = Opal.hash_ids[key];
          if (#{eql?(`item`)}) {
            return 'self';
          }
        }
      }

      Opal.hash_ids[hash_id] = self;

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

        if (key.$$is_string) {
          result.push([key, self.$$smap[key].$hash()]);
        } else {
          result.push([key.key_hash, key.value.$hash()]);
        }
      }

      return result.sort().join();

    } finally {
      if (top) {
        delete Opal.hash_ids;
      }
    }
  }
end

#index(object) ⇒ Object Also known as: key


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# File 'opal/opal/corelib/hash.rb', line 459

def index(object)
  %x{
    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;
      }

      if (#{`value` == object}) {
        return key;
      }
    }

    return nil;
  }
end

#indexes(*args) ⇒ Object Also known as: indices, values_at


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# File 'opal/opal/corelib/hash.rb', line 480

def indexes(*args)
  %x{
    var result = [];

    for (var i = 0, length = args.length, key, value; i < length; i++) {
      key = args[i];
      value = Opal.hash_get(self, key);

      if (value === undefined) {
        result.push(#{default});
        continue;
      }

      result.push(value);
    }

    return result;
  }
end

#inspectObject Also known as: to_s


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# File 'opal/opal/corelib/hash.rb', line 504

def inspect
  %x{
    var top = (inspect_ids === undefined),
        hash_id = self.$object_id(),
        result = [];

    try {
      if (top) {
        inspect_ids = {};
      }

      if (inspect_ids.hasOwnProperty(hash_id)) {
        return '{...}';
      }

      inspect_ids[hash_id] = true;

      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.$inspect() + '=>' + value.$inspect());
      }

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

    } finally {
      if (top) {
        inspect_ids = undefined;
      }
    }
  }
end

#invertObject


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# File 'opal/opal/corelib/hash.rb', line 544

def invert
  %x{
    var hash = Opal.hash();

    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;
      }

      Opal.hash_put(hash, value, key);
    }

    return hash;
  }
end

#keep_if(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 565

def keep_if(&block)
  return enum_for(:keep_if){self.size} unless block

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

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

      obj = block(key, value);

      if (obj === $breaker) {
        return $breaker.$v;
      }

      if (obj === false || obj === nil) {
        if (Opal.hash_delete(self, key) !== undefined) {
          length--;
          i--;
        }
      }
    }

    return self;
  }
end

#keysObject


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# File 'opal/opal/corelib/hash.rb', line 601

def keys
  %x{
    var result = [];

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

      if (key.$$is_string) {
        result.push(key);
      } else {
        result.push(key.key);
      }
    }

    return result;
  }
end

#lengthObject Also known as: size


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# File 'opal/opal/corelib/hash.rb', line 619

def length
  `self.$$keys.length`
end

#merge(other, &block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 625

def merge(other, &block)
  dup.merge!(other, &block)
end

#merge!(other, &block) ⇒ Object Also known as: update


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# File 'opal/opal/corelib/hash.rb', line 629

def merge!(other, &block)
  %x{
    if (!#{Hash === other}) {
      other = #{Opal.coerce_to!(other, Hash, :to_hash)};
    }

    var i, other_keys = other.$$keys, length = other_keys.length, key, value, other_value;

    if (block === nil) {
      for (i = 0; i < length; i++) {
        key = other_keys[i];

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

        Opal.hash_put(self, key, other_value);
      }

      return self;
    }

    for (i = 0; i < length; i++) {
      key = other_keys[i];

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

      value = Opal.hash_get(self, key);

      if (value === undefined) {
        Opal.hash_put(self, key, other_value);
        continue;
      }

      Opal.hash_put(self, key, block(key, value, other_value));
    }

    return self;
  }
end

#rassoc(object) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 678

def rassoc(object)
  %x{
    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;
      }

      if (#{`value` == object}) {
        return [key, value];
      }
    }

    return nil;
  }
end

#rehashObject


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# File 'opal/opal/corelib/hash.rb', line 699

def rehash
  %x{
    Opal.hash_rehash(self);
    return self;
  }
end

#reject(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 706

def reject(&block)
  return enum_for(:reject){self.size} unless block

  %x{
    var hash = Opal.hash();

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

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

      obj = block(key, value);

      if (obj === $breaker) {
        return $breaker.$v;
      }

      if (obj === false || obj === nil) {
        Opal.hash_put(hash, key, value);
      }
    }

    return hash;
  }
end

#reject!(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 737

def reject!(&block)
  return enum_for(:reject!){self.size} unless block

  %x{
    var changes_were_made = false;

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

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

      obj = block(key, value);

      if (obj === $breaker) {
        return $breaker.$v;
      }

      if (obj !== false && obj !== nil) {
        if (Opal.hash_delete(self, key) !== undefined) {
          changes_were_made = true;
          length--;
          i--;
        }
      }
    }

    return changes_were_made ? self : nil;
  }
end

#replace(other) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 772

def replace(other)
  other = Opal.coerce_to!(other, Hash, :to_hash)

  %x{
    Opal.hash_init(self);

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

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

      Opal.hash_put(self, key, other_value);
    }
  }

  if other.default_proc
    self.default_proc = other.default_proc
  else
    self.default = other.default
  end

  self
end

#select(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 801

def select(&block)
  return enum_for(:select){self.size} unless block

  %x{
    var hash = Opal.hash();

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

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

      obj = block(key, value);

      if (obj === $breaker) {
        return $breaker.$v;
      }

      if (obj !== false && obj !== nil) {
        Opal.hash_put(hash, key, value);
      }
    }

    return hash;
  }
end

#select!(&block) ⇒ Object


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# File 'opal/opal/corelib/hash.rb', line 832

def select!(&block)
  return enum_for(:select!){self.size} unless block

  %x{
    var result = nil;

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

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

      obj = block(key, value);

      if (obj === $breaker) {
        return $breaker.$v;
      }

      if (obj === false || obj === nil) {
        if (Opal.hash_delete(self, key) !== undefined) {
          length--;
          i--;
        }
        result = self;
      }
    }

    return result;
  }
end

#shiftObject


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# File 'opal/opal/corelib/hash.rb', line 867

def shift
  %x{
    var keys = self.$$keys,
        key;

    if (keys.length > 0) {
      key = keys[0];

      key = key.$$is_string ? key : key.key;

      return [key, Opal.hash_delete(self, key)];
    }

    return self.$default(nil);
  }
end

#to_aObject


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# File 'opal/opal/corelib/hash.rb', line 888

def to_a
  %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, value]);
    }

    return result;
  }
end

#to_hObject


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# File 'opal/opal/corelib/hash.rb', line 909

def to_h
  %x{
    if (self.$$class === Opal.Hash) {
      return self;
    }

    var hash = new Opal.Hash.$$alloc();

    Opal.hash_init(hash);
    Opal.hash_clone(self, hash);

    return hash;
  }
end

#to_hashObject


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# File 'opal/opal/corelib/hash.rb', line 924

def to_hash
  self
end

#valuesObject


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# File 'opal/opal/corelib/hash.rb', line 936

def values
  %x{
    var result = [];

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

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

    return result;
  }
end