Class: Hash

Inherits:
Object
  • 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, #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 23

def initialize(defaults = undefined, &block)
  %x{
    self.none = (defaults === undefined ? nil : defaults);
    self.proc = block;
  }
  self
end

Class Method Details

.[](*objs) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 6

def self.[](*objs)
  `$opal.hash.apply(null, objs)`
end

.allocate ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 10

def self.allocate
  %x{
    var hash = new self._alloc;

    hash.map  = {};
    hash.keys = [];
    hash.none = nil;
    hash.proc = nil;

    return hash;
  }
end

Instance Method Details

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



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# File 'opal/opal/corelib/hash.rb', line 31

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

    if (!other.map || !other.keys) {
      return false;
    }

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

    var map  = self.map,
        map2 = other.map;

    for (var i = 0, length = self.keys.length; i < length; i++) {
      var key = self.keys[i], obj = map[key], obj2 = map2[key];
      if (obj2 === undefined || #{`obj` != `obj2`}) {
        return false;
      }
    }

    return true;
  }
end

#[](key) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 59

def [](key)
  %x{
    var map = self.map;

    if ($opal.hasOwnProperty.call(map, key)) {
      return map[key];
    }

    var proc = #@proc;

    if (proc !== nil) {
      return #{ `proc`.call self, key };
    }

    return #@none;
  }
end

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



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# File 'opal/opal/corelib/hash.rb', line 77

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

    if (!$opal.hasOwnProperty.call(map, key)) {
      self.keys.push(key);
    }

    map[key] = value;

    return value;
  }
end

#assoc(object) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 91

def assoc(object)
  %x{
    var keys = self.keys, key;

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

      if (#{`key` == object}) {
        return [key, self.map[key]];
      }
    }

    return nil;
  }
end

#clear ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 107

def clear
  %x{
    self.map = {};
    self.keys = [];
    return self;
  }
end

#clone ⇒ Object Also known as: dup 



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# File 'opal/opal/corelib/hash.rb', line 115

def clone
  %x{
    var map  = {},
        keys = [];

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

      keys.push(key);
      map[key] = value;
    }

    var hash = new self._klass._alloc();

    hash.map  = map;
    hash.keys = keys;
    hash.none = self.none;
    hash.proc = self.proc;

    return hash;
  }
end

#default(val = undefined) ⇒ Object 



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

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

#default=(object) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 148

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

#default_proc ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 155

def default_proc
  @proc
end

#default_proc=(proc) ⇒ Object 



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

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;
    return (self.proc = proc);
  }
end

#delete(key, &block) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 173

def delete(key, &block)
  %x{
    var map  = self.map, result = map[key];

    if (result != null) {
      delete map[key];
      self.keys.$delete(key);

      return result;
    }

    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 191

def delete_if(&block)
  return enum_for :delete_if unless block

  %x{
    var map = self.map, keys = self.keys, value;

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

      if ((value = block(key, obj)) === $breaker) {
        return $breaker.$v;
      }

      if (value !== false && value !== nil) {
        keys.splice(i, 1);
        delete map[key];

        length--;
        i--;
      }
    }

    return self;
  }
end

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



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# File 'opal/opal/corelib/hash.rb', line 219

def each(&block)
  return enum_for :each unless block

  %x{
    var map  = self.map,
        keys = self.keys;

    for (var i = 0, length = keys.length; i < length; i++) {
      var key   = keys[i],
          value = $opal.$yield1(block, [key, map[key]]);

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

    return self;
  }
end

#each_key(&block) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 239

def each_key(&block)
  return enum_for :each_key unless block

  %x{
    var keys = self.keys;

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

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

    return self;
  }
end

#each_value(&block) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 259

def each_value(&block)
  return enum_for :each_value unless block

  %x{
    var map = self.map, keys = self.keys;

    for (var i = 0, length = keys.length; i < length; i++) {
      if (block(map[keys[i]]) === $breaker) {
        return $breaker.$v;
      }
    }

    return self;
  }
end

#empty? ⇒ Boolean

Returns:



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# File 'opal/opal/corelib/hash.rb', line 275

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

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



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# File 'opal/opal/corelib/hash.rb', line 281

def fetch(key, defaults = undefined, &block)
  %x{
    var value = self.map[key];

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

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

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

      return value;
    }

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

    #{ raise KeyError, "key not found" };
  }
end

#flatten(level = undefined) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 307

def flatten(level=undefined)
  %x{
    var map = self.map, keys = self.keys, result = [];

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

      result.push(key);

      if (value._isArray) {
        if (level == null || level === 1) {
          result.push(value);
        }
        else {
          result = result.concat(#{`value`.flatten(`level - 1`)});
        }
      }
      else {
        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 333

def has_key?(key)
  `$opal.hasOwnProperty.call(self.map, key)`
end

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

Returns:



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# File 'opal/opal/corelib/hash.rb', line 337

def has_value?(value)
  %x{
    for (var assoc in self.map) {
      if (#{`self.map[assoc]` == value}) {
        return true;
      }
    }

    return false;
  }
end

#hash ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 349

def hash
  `self._id`
end

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



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# File 'opal/opal/corelib/hash.rb', line 355

def index(object)
  %x{
    var map = self.map, keys = self.keys;

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

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

    return nil;
  }
end

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



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# File 'opal/opal/corelib/hash.rb', line 371

def indexes(*keys)
  %x{
    var result = [], map = self.map, val;

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

      if (val != null) {
        result.push(val);
      }
      else {
        result.push(self.none);
      }
    }

    return result;
  }
end

#inspect ⇒ Object Also known as: to_s 



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

def inspect
  %x{
    var inspect = [], keys = self.keys, map = self.map;

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

      if (val === self) {
        inspect.push(#{`key`.inspect} + '=>' + '{...}');
      } else {
        inspect.push(#{`key`.inspect} + '=>' + #{`map[key]`.inspect});
      }
    }

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

#invert ⇒ Object 



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

def invert
  %x{
    var result = $opal.hash(), keys = self.keys, map = self.map,
        keys2 = result.keys, map2 = result.map;

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

      keys2.push(obj);
      map2[obj] = key;
    }

    return result;
  }
end

#keep_if(&block) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 426

def keep_if(&block)
  return enum_for :keep_if unless block

  %x{
    var map = self.map, keys = self.keys, value;

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

      if ((value = block(key, obj)) === $breaker) {
        return $breaker.$v;
      }

      if (value === false || value === nil) {
        keys.splice(i, 1);
        delete map[key];

        length--;
        i--;
      }
    }

    return self;
  }
end

#keys ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 456

def keys
  `self.keys.slice(0)`
end

#length ⇒ Object Also known as: size 



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# File 'opal/opal/corelib/hash.rb', line 460

def length
  `self.keys.length`
end

#merge(other, &block) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 466

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

    var keys = self.keys, map = self.map,
        result = $opal.hash(), keys2 = result.keys, map2 = result.map;

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

      keys2.push(key);
      map2[key] = map[key];
    }

    var keys = other.keys, map = other.map;

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

        if (map2[key] == null) {
          keys2.push(key);
        }

        map2[key] = map[key];
      }
    }
    else {
      for (var i = 0, length = keys.length; i < length; i++) {
        var key = keys[i];

        if (map2[key] == null) {
          keys2.push(key);
          map2[key] = map[key];
        }
        else {
          map2[key] = block(key, map2[key], map[key]);
        }
      }
    }

    return result;
  }
end

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



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# File 'opal/opal/corelib/hash.rb', line 513

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

    var keys = self.keys, map = self.map,
        keys2 = other.keys, map2 = other.map;

    if (block === nil) {
      for (var i = 0, length = keys2.length; i < length; i++) {
        var key = keys2[i];

        if (map[key] == null) {
          keys.push(key);
        }

        map[key] = map2[key];
      }
    }
    else {
      for (var i = 0, length = keys2.length; i < length; i++) {
        var key = keys2[i];

        if (map[key] == null) {
          keys.push(key);
          map[key] = map2[key];
        }
        else {
          map[key] = block(key, map[key], map2[key]);
        }
      }
    }

    return self;
  }
end

#rassoc(object) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 551

def rassoc(object)
  %x{
    var keys = self.keys, map = self.map;

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

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

    return nil;
  }
end

#reject(&block) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 567

def reject(&block)
  return enum_for :reject unless block

  %x{
    var keys = self.keys, map = self.map,
        result = $opal.hash(), map2 = result.map, keys2 = result.keys;

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

      if ((value = block(key, obj)) === $breaker) {
        return $breaker.$v;
      }

      if (value === false || value === nil) {
        keys2.push(key);
        map2[key] = obj;
      }
    }

    return result;
  }
end

#replace(other) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 591

def replace(other)
  %x{
    var map = self.map = {}, keys = self.keys = [];

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

    return self;
  }
end

#select(&block) ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 605

def select(&block)
  return enum_for :select unless block

  %x{
    var keys = self.keys, map = self.map,
        result = $opal.hash(), map2 = result.map, keys2 = result.keys;

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

      if ((value = block(key, obj)) === $breaker) {
        return $breaker.$v;
      }

      if (value !== false && value !== nil) {
        keys2.push(key);
        map2[key] = obj;
      }
    }

    return result;
  }
end

#select!(&block) ⇒ Object 



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

def select!(&block)
  return enum_for :select! unless block

  %x{
    var map = self.map, keys = self.keys, value, result = nil;

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

      if ((value = block(key, obj)) === $breaker) {
        return $breaker.$v;
      }

      if (value === false || value === nil) {
        keys.splice(i, 1);
        delete map[key];

        length--;
        i--;
        result = self
      }
    }

    return result;
  }
end

#shift ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 656

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

    if (keys.length) {
      var key = keys[0], obj = map[key];

      delete map[key];
      keys.splice(0, 1);

      return [key, obj];
    }

    return nil;
  }
end

#to_a ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 677

def to_a
  %x{
    var keys = self.keys, map = self.map, result = [];

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

    return result;
  }
end

#to_h ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 690

def to_h
  %x{
    var hash   = new Opal.Hash._alloc,
        cloned = #{clone};

    hash.map  = cloned.map;
    hash.keys = cloned.keys;
    hash.none = cloned.none;
    hash.proc = cloned.proc;

    return hash;
  }
end

#to_hash ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 704

def to_hash
  self
end

#values ⇒ Object 



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# File 'opal/opal/corelib/hash.rb', line 716

def values
  %x{
    var map    = self.map,
        result = [];

    for (var key in map) {
      result.push(map[key]);
    }

    return result;
  }
end