Module: Enumerable

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# File 'opal/opal/corelib/enumerable.rb', line 16
def all?(pattern = undefined, &block)
 if `pattern !== undefined`
 each do |*value|
 comparable = `comparableForPattern(value)`
 return false unless pattern.public_send(:===, *comparable)
 end
 elsif block_given?
 each do |*value|
 unless yield(*value)
 return false
 end
 end
 else
 each do |*value|
 unless Opal .destructure (value)
 return false
 end
 end
 end
 true
end

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# File 'opal/opal/corelib/enumerable.rb', line 40
def any?(pattern = undefined, &block)
 if `pattern !== undefined`
 each do |*value|
 comparable = `comparableForPattern(value)`
 return true if pattern.public_send(:===, *comparable)
 end
 elsif block_given?
 each do |*value|
 if yield(*value)
 return true
 end
 end
 else
 each do |*value|
 if Opal .destructure (value)
 return true
 end
 end
 end
 false
end

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# File 'opal/opal/corelib/enumerable.rb', line 64
def chunk(&block)
 return to_enum(:chunk) { enumerator_size } unless block_given?
 ::Enumerator .new  do |yielder|
 %x{
 var previous = nil, accumulate = [];
 function releaseAccumulate() {
 if (accumulate.length > 0) {
 #{yielder.yield(`previous`, `accumulate`)}
 }
 }
 self.$each.$$p = function(value) {
 var key = Opal.yield1(block, value);
 if (key === nil) {
 releaseAccumulate();
 accumulate = [];
 previous = nil;
 } else {
 if (previous === nil || previous === key) {
 accumulate.push(value);
 } else {
 releaseAccumulate();
 accumulate = [value];
 }
 previous = key;
 }
 }
 self.$each();
 releaseAccumulate();
 }
 end
end

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# File 'opal/opal/corelib/enumerable.rb', line 103
def chunk_while(&block)
 raise ArgumentError , 'no block given' unless block_given?
 slice_when { |before, after| !(yield before, after) }
end

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# File 'opal/opal/corelib/enumerable.rb', line 109
def collect(&block)
 return enum_for(:collect) { enumerator_size } unless block_given?
 %x{
 var result = [];
 self.$each.$$p = function() {
 var value = Opal.yieldX(block, arguments);
 result.push(value);
 };
 self.$each();
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 127
def collect_concat(&block)
 return enum_for(:collect_concat) { enumerator_size } unless block_given?
 map { |item| yield item }.flatten(1)
end

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# File 'opal/opal/corelib/enumerable.rb', line 132
def count(object = undefined, &block)
 result = 0
 %x{
 if (object != null && block !== nil) {
 #{warn('warning: given block not used')}
 }
 }
 if `object != null`
 block = proc do |*args|
 Opal .destructure (args) == object
 end
 elsif block.nil?
 block = proc { true }
 end
 each do |*args|
 `result++` if `Opal.yieldX(block, args)`
 end
 result
end

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# File 'opal/opal/corelib/enumerable.rb', line 156
def cycle(n = nil, &block)
 unless block_given?
 return enum_for(:cycle, n) do
 if n.nil?
 respond_to?(:size) ? Float ::INFINITY  : nil
 else
 n = Opal .coerce_to! (n, Integer , :to_int)
 n > 0 ? enumerator_size * n : 0
 end
 end
 end
 unless n.nil?
 n = Opal .coerce_to!  n, Integer , :to_int
 return if `n <= 0`
 end
 %x{
 var result,
 all = [], i, length, value;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 all.push(param);
 }
 self.$each();
 if (result !== undefined) {
 return result;
 }
 if (all.length === 0) {
 return nil;
 }
 if (n === nil) {
 while (true) {
 for (i = 0, length = all.length; i < length; i++) {
 value = Opal.yield1(block, all[i]);
 }
 }
 }
 else {
 while (n > 1) {
 for (i = 0, length = all.length; i < length; i++) {
 value = Opal.yield1(block, all[i]);
 }
 n--;
 }
 }
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 214
def detect(ifnone = undefined, &block)
 return enum_for :detect, ifnone unless block_given?
 each do |*args|
 value = Opal .destructure (args)
 if yield(value)
 return value
 end
 end
 %x{
 if (ifnone !== undefined) {
 if (typeof(ifnone) === 'function') {
 return ifnone();
 } else {
 return ifnone;
 }
 }
 }
 nil
end

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# File 'opal/opal/corelib/enumerable.rb', line 237
def drop(number)
 number = Opal .coerce_to  number, Integer , :to_int
 if `number < 0`
 raise ArgumentError , 'attempt to drop negative size'
 end
 %x{
 var result = [],
 current = 0;
 self.$each.$$p = function() {
 if (number <= current) {
 result.push(#{Opal .destructure (`arguments`)});
 }
 current++;
 };
 self.$each()
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 262
def drop_while(&block)
 return enum_for :drop_while unless block_given?
 %x{
 var result = [],
 dropping = true;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)};
 if (dropping) {
 var value = Opal.yield1(block, param);
 if (#{Opal .falsy?(`value`)}) {
 dropping = false;
 result.push(param);
 }
 }
 else {
 result.push(param);
 }
 };
 self.$each();
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 291
def each_cons(n, &block)
 if `arguments.length != 1`
 raise ArgumentError , "wrong number of arguments (#{`arguments.length`} for 1)"
 end
 n = Opal .try_convert  n, Integer , :to_int
 if `n <= 0`
 raise ArgumentError , 'invalid size'
 end
 unless block_given?
 return enum_for(:each_cons, n) do
 enum_size = enumerator_size
 if enum_size.nil?
 nil
 elsif enum_size == 0 || enum_size < n
 0
 else
 enum_size - n + 1
 end
 end
 end
 %x{
 var buffer = [], result = nil;
 self.$each.$$p = function() {
 var element = #{Opal .destructure (`arguments`)};
 buffer.push(element);
 if (buffer.length > n) {
 buffer.shift();
 }
 if (buffer.length == n) {
 Opal.yield1(block, buffer.slice(0, n));
 }
 }
 self.$each();
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 335
def each_entry(*data, &block)
 unless block_given?
 return to_enum(:each_entry, *data) { enumerator_size }
 end
 %x{
 self.$each.$$p = function() {
 var item = #{Opal .destructure (`arguments`)};
 Opal.yield1(block, item);
 }
 self.$each.apply(self, data);
 return self;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 353
def each_slice(n, &block)
 n = Opal .coerce_to  n, Integer , :to_int
 if `n <= 0`
 raise ArgumentError , 'invalid slice size'
 end
 return enum_for(:each_slice, n) { respond_to?(:size) ? (size / n).ceil : nil } unless block_given?
 %x{
 var result,
 slice = []
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)};
 slice.push(param);
 if (slice.length === n) {
 Opal.yield1(block, slice);
 slice = [];
 }
 };
 self.$each();
 if (result !== undefined) {
 return result;
 }
 // our "last" group, if smaller than n then won't have been yielded
 if (slice.length > 0) {
 Opal.yield1(block, slice);
 }
 }
 nil
end

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# File 'opal/opal/corelib/enumerable.rb', line 392
def each_with_index(*args, &block)
 return enum_for(:each_with_index, *args) { enumerator_size } unless block_given?
 %x{
 var result,
 index = 0;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)};
 block(param, index);
 index++;
 };
 self.$each.apply(self, args);
 if (result !== undefined) {
 return result;
 }
 }
 self
end

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# File 'opal/opal/corelib/enumerable.rb', line 417
def each_with_object(object, &block)
 return enum_for(:each_with_object, object) { enumerator_size } unless block_given?
 %x{
 var result;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)};
 block(param, object);
 };
 self.$each();
 if (result !== undefined) {
 return result;
 }
 }
 object
end

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# File 'opal/opal/corelib/enumerable.rb', line 439
def entries(*args)
 %x{
 var result = [];
 self.$each.$$p = function() {
 result.push(#{Opal .destructure (`arguments`)});
 };
 self.$each.apply(self, args);
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 666
def enumerator_size
 respond_to?(:size) ? size : nil
end

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# File 'opal/opal/corelib/enumerable.rb', line 455
def find_all(&block)
 return enum_for(:find_all) { enumerator_size } unless block_given?
 %x{
 var result = [];
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 if (#{Opal .truthy?(`value`)}) {
 result.push(param);
 }
 };
 self.$each();
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 476
def find_index(object = undefined, &block)
 return enum_for :find_index if `object === undefined && block === nil`
 %x{
 if (object != null && block !== nil) {
 #{warn('warning: given block not used')}
 }
 }
 index = 0
 if `object != null`
 each do |*value|
 if Opal .destructure (value) == object
 return index
 end
 `index += 1`
 end
 else
 each do |*value|
 if yield(*value)
 return index
 end
 `index += 1`
 end
 end
 nil
end

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# File 'opal/opal/corelib/enumerable.rb', line 508
def first(number = undefined)
 if `number === undefined`
 each do |value|
 return value
 end
 else
 result = []
 number = Opal .coerce_to  number, Integer , :to_int
 if `number < 0`
 raise ArgumentError , 'attempt to take negative size'
 end
 if `number == 0`
 return []
 end
 current = 0
 each do |*args|
 `result.push(#{Opal .destructure (args)})`
 if `number <= ++current`
 return result
 end
 end
 result
 end
end

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# File 'opal/opal/corelib/enumerable.rb', line 541
def grep(pattern, &block)
 result = []
 each do |*value|
 cmp = `comparableForPattern(value)`
 next unless pattern.__send__(:===, *cmp)
 if block_given?
 value = [value] if value.length > 1
 value = yield(*value)
 elsif value.length <= 1
 value = value[0]
 end
 result.push(value)
 end
 result
end

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# File 'opal/opal/corelib/enumerable.rb', line 560
def grep_v(pattern, &block)
 result = []
 each do |*value|
 cmp = `comparableForPattern(value)`
 next if pattern.__send__(:===, *cmp)
 if block_given?
 value = [value] if value.length > 1
 value = yield(*value)
 elsif value.length <= 1
 value = value[0]
 end
 result.push(value)
 end
 result
end

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# File 'opal/opal/corelib/enumerable.rb', line 579
def group_by(&block)
 return enum_for(:group_by) { enumerator_size } unless block_given?
 hash = {}
 %x{
 var result;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 #{(hash[`value`] ||= []) << `param`};
 }
 self.$each();
 if (result !== undefined) {
 return result;
 }
 }
 hash
end

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# File 'opal/opal/corelib/enumerable.rb', line 604
def include?(obj)
 each do |*args|
 if Opal .destructure (args) == obj
 return true
 end
 end
 false
end

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# File 'opal/opal/corelib/enumerable.rb', line 614
def inject(object = undefined, sym = undefined, &block)
 %x{
 var result = object;
 if (block !== nil && sym === undefined) {
 self.$each.$$p = function() {
 var value = #{Opal .destructure (`arguments`)};
 if (result === undefined) {
 result = value;
 return;
 }
 value = Opal.yieldX(block, [result, value]);
 result = value;
 };
 }
 else {
 if (sym === undefined) {
 if (!#{Symbol  === object}) {
 #{raise TypeError , "#{object.inspect} is not a Symbol"};
 }
 sym = object;
 result = undefined;
 }
 self.$each.$$p = function() {
 var value = #{Opal .destructure (`arguments`)};
 if (result === undefined) {
 result = value;
 return;
 }
 result = #{`result`.__send__ sym, `value`};
 };
 }
 self.$each();
 return result == undefined ? nil : result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 660
def lazy
 Enumerator ::Lazy .new (self, enumerator_size) do |enum, *args|
 enum.yield(*args)
 end
end

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# File 'opal/opal/corelib/enumerable.rb', line 672
def max(n = undefined, &block)
 %x{
 if (n === undefined || n === nil) {
 var result, value;
 self.$each.$$p = function() {
 var item = #{Opal .destructure (`arguments`)};
 if (result === undefined) {
 result = item;
 return;
 }
 if (block !== nil) {
 value = Opal.yieldX(block, [item, result]);
 } else {
 value = #{`item` <=> `result`};
 }
 if (value === nil) {
 #{raise ArgumentError , 'comparison failed'};
 }
 if (value > 0) {
 result = item;
 }
 }
 self.$each();
 if (result === undefined) {
 return nil;
 } else {
 return result;
 }
 }
 }
 n = Opal .coerce_to (n, Integer , :to_int)
 sort(&block).reverse.first(n)
end

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# File 'opal/opal/corelib/enumerable.rb', line 715
def max_by(&block)
 return enum_for(:max_by) { enumerator_size } unless block
 %x{
 var result,
 by;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 if (result === undefined) {
 result = param;
 by = value;
 return;
 }
 if (#{`value` <=> `by`} > 0) {
 result = param
 by = value;
 }
 };
 self.$each();
 return result === undefined ? nil : result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 746
def min(&block)
 %x{
 var result;
 if (block !== nil) {
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)};
 if (result === undefined) {
 result = param;
 return;
 }
 var value = block(param, result);
 if (value === nil) {
 #{raise ArgumentError , 'comparison failed'};
 }
 if (value < 0) {
 result = param;
 }
 };
 }
 else {
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)};
 if (result === undefined) {
 result = param;
 return;
 }
 if (#{Opal .compare (`param`, `result`)} < 0) {
 result = param;
 }
 };
 }
 self.$each();
 return result === undefined ? nil : result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 791
def min_by(&block)
 return enum_for(:min_by) { enumerator_size } unless block
 %x{
 var result,
 by;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 if (result === undefined) {
 result = param;
 by = value;
 return;
 }
 if (#{`value` <=> `by`} < 0) {
 result = param
 by = value;
 }
 };
 self.$each();
 return result === undefined ? nil : result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 820
def minmax(&block)
 block ||= proc { |a, b| a <=> b }
 %x{
 var min = nil, max = nil, first_time = true;
 self.$each.$$p = function() {
 var element = #{Opal .destructure (`arguments`)};
 if (first_time) {
 min = max = element;
 first_time = false;
 } else {
 var min_cmp = #{block.call(`min`, `element`)};
 if (min_cmp === nil) {
 #{raise ArgumentError , 'comparison failed'}
 } else if (min_cmp > 0) {
 min = element;
 }
 var max_cmp = #{block.call(`max`, `element`)};
 if (max_cmp === nil) {
 #{raise ArgumentError , 'comparison failed'}
 } else if (max_cmp < 0) {
 max = element;
 }
 }
 }
 self.$each();
 return [min, max];
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 856
def minmax_by(&block)
 raise NotImplementedError 
end

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# File 'opal/opal/corelib/enumerable.rb', line 860
def none?(pattern = undefined, &block)
 if `pattern !== undefined`
 each do |*value|
 comparable = `comparableForPattern(value)`
 return false if pattern.public_send(:===, *comparable)
 end
 elsif block_given?
 each do |*value|
 if yield(*value)
 return false
 end
 end
 else
 each do |*value|
 item = Opal .destructure (value)
 return false if item
 end
 end
 true
end

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# File 'opal/opal/corelib/enumerable.rb', line 884
def one?(pattern = undefined, &block)
 count = 0
 if `pattern !== undefined`
 each do |*value|
 comparable = `comparableForPattern(value)`
 if pattern.public_send(:===, *comparable)
 count += 1
 return false if count > 1
 end
 end
 elsif block_given?
 each do |*value|
 next unless yield(*value)
 count += 1
 return false if count > 1
 end
 else
 each do |*value|
 next unless Opal .destructure (value)
 count += 1
 return false if count > 1
 end
 end
 count == 1
end

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# File 'opal/opal/corelib/enumerable.rb', line 915
def partition(&block)
 return enum_for(:partition) { enumerator_size } unless block_given?
 %x{
 var truthy = [], falsy = [], result;
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 if (#{Opal .truthy?(`value`)}) {
 truthy.push(param);
 }
 else {
 falsy.push(param);
 }
 };
 self.$each();
 return [truthy, falsy];
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 941
def reject(&block)
 return enum_for(:reject) { enumerator_size } unless block_given?
 %x{
 var result = [];
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 if (#{Opal .falsy?(`value`)}) {
 result.push(param);
 }
 };
 self.$each();
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 962
def reverse_each(&block)
 return enum_for(:reverse_each) { enumerator_size } unless block_given?
 %x{
 var result = [];
 self.$each.$$p = function() {
 result.push(arguments);
 };
 self.$each();
 for (var i = result.length - 1; i >= 0; i--) {
 Opal.yieldX(block, result[i]);
 }
 return result;
 }
end

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# File 'opal/opal/corelib/enumerable.rb', line 1048
def slice_after(pattern = undefined, &block)
 if `pattern === undefined && block === nil`
 raise ArgumentError , 'both pattern and block are given'
 end
 if `pattern !== undefined && block !== nil || arguments.length > 1`
 raise ArgumentError , "wrong number of arguments (#{`arguments.length`} expected 1)"
 end
 if `pattern !== undefined`
 block = proc { |e| pattern === e }
 end
 Enumerator .new  do |yielder|
 %x{
 var accumulate;
 self.$each.$$p = function() {
 var element = #{Opal .destructure (`arguments`)},
 end_chunk = Opal.yield1(block, element);
 if (accumulate == null) {
 accumulate = [];
 }
 if (#{Opal .truthy?(`end_chunk`)}) {
 accumulate.push(element);
 #{yielder.yield(`accumulate`)};
 accumulate = null;
 } else {
 accumulate.push(element)
 }
 }
 self.$each();
 if (accumulate != null) {
 #{yielder.yield(`accumulate`)};
 }
 }
 end
end

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# File 'opal/opal/corelib/enumerable.rb', line 984
def slice_before(pattern = undefined, &block)
 if `pattern === undefined && block === nil`
 raise ArgumentError , 'both pattern and block are given'
 end
 if `pattern !== undefined && block !== nil || arguments.length > 1`
 raise ArgumentError , "wrong number of arguments (#{`arguments.length`} expected 1)"
 end
 Enumerator .new  do |e|
 %x{
 var slice = [];
 if (block !== nil) {
 if (pattern === undefined) {
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = Opal.yield1(block, param);
 if (#{Opal .truthy?(`value`)} && slice.length > 0) {
 #{e << `slice`};
 slice = [];
 }
 slice.push(param);
 };
 }
 else {
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = block(param, #{pattern.dup});
 if (#{Opal .truthy?(`value`)} && slice.length > 0) {
 #{e << `slice`};
 slice = [];
 }
 slice.push(param);
 };
 }
 }
 else {
 self.$each.$$p = function() {
 var param = #{Opal .destructure (`arguments`)},
 value = #{pattern === `param`};
 if (#{Opal .truthy?(`value`)} && slice.length > 0) {
 #{e << `slice`};
 slice = [];
 }
 slice.push(param);
 };
 }
 self.$each();
 if (slice.length > 0) {
 #{e << `slice`};
 }
 }
 end
end

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# File 'opal/opal/corelib/enumerable.rb', line 1091
def slice_when(&block)
 raise ArgumentError , 'wrong number of arguments (0 for 1)' unless block_given?
 Enumerator .new  do |yielder|
 %x{
 var slice = nil, last_after = nil;
 self.$each_cons.$$p = function() {
 var params = #{Opal .destructure (`arguments`)},
 before = params[0],
 after = params[1],
 match = Opal.yieldX(block, [before, after]);
 last_after = after;
 if (slice === nil) {
 slice = [];
 }
 if (#{Opal .truthy?(`match`)}) {
 slice.push(before);
 #{yielder.yield(`slice`)};
 slice = [];
 } else {
 slice.push(before);
 }
 }
 self.$each_cons(2);
 if (slice !== nil) {
 slice.push(last_after);
 #{yielder.yield(`slice`)};
 }
 }
 end
end

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# File 'opal/opal/corelib/enumerable.rb', line 1129
def sort(&block)
 ary = to_a
 block = ->(a, b) { a <=> b } unless block_given?
 ary.sort(&block)
end

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# File 'opal/opal/corelib/enumerable.rb', line 1135
def sort_by(&block)
 return enum_for(:sort_by) { enumerator_size } unless block_given?
 dup = map do
 arg = Opal .destructure (`arguments`)
 [yield(arg), arg]
 end
 dup.sort! { |a, b| `a[0]` <=> `b[0]` }
 dup.map! { |i| `i[1]` }
end

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# File 'opal/opal/corelib/enumerable.rb', line 1146
def sum(initial = 0)
 result = initial
 each do |*args|
 item = if block_given?
 yield(*args)
 else
 Opal .destructure (args)
 end
 result += item
 end
 result
end

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# File 'opal/opal/corelib/enumerable.rb', line 1161
def take(num)
 first(num)
end

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# File 'opal/opal/corelib/enumerable.rb', line 1165
def take_while(&block)
 return enum_for :take_while unless block
 result = []
 each do |*args|
 value = Opal .destructure (args)
 unless yield(value)
 return result
 end
 `result.push(value)`
 end
end

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# File 'opal/opal/corelib/enumerable.rb', line 1181
def uniq(&block)
 hash = {}
 each do |*args|
 value = Opal .destructure (args)
 produced = if block_given?
 yield(value)
 else
 value
 end
 unless hash.key?(produced)
 hash[produced] = value
 end
 end
 hash.values
end

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# File 'opal/opal/corelib/enumerable.rb', line 1203
def zip(*others, &block)
 to_a.zip(*others)
end