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# [digits].my_digits(base)
# [digits].my_digits([base])		# ex. [9,33,21,1428].undigits([24,60,60]) #=> 123456789
# baseは数値または数値の配列
# ty 0:baseは基数, 1:baseは |ビット数|
class Array
	def undigits(base=10,ty=0)
		if base.is_a?(Array)
			case ty
			when 0
				bs = [*base,1]
				b = 1
				return self.inject(0){|r,i|
					if bs.empty?
#						raise ArgumentError
						return r
					else
						b *= bs.pop.abs
						next b * i + r	if i.is_a?(Integer)
#						raise ArgumentError
						r
					end
				}
			when 1
				bs = base.dup
				b = 0
				return self.inject(0){|r,i|
					if bs.empty?
#						raise ArgumentError
						return r
					else
						ab = bs.pop.abs
						val =  r | ((i & (1 << ab) - 1) << b)
						b += ab
						next val
					end
				}
			end
			raise ArgumentError, 'type'
		end
		raise( ArgumentError, 'base' )	if base.is_a?(Integer).!
		case ty
		when 0
			raise( ArgumentError, 'base' )	if base <= 1
			return self.reverse.inject(0){|r,i|
				next base * r + i	if i.is_a?(Integer)
#				raise ArgumentError
				r
			}
		when 1
			raise( ArgumentError, 'base' )	if base == 0
			ab = base.abs
			msk = (1 << ab) - 1
			b = 0
			return self.inject(0){|r,i|
#				raise ArgumentError	unles i.is_a?(Integer)
				next r	unless i.is_a?(Integer)
				r += (i & msk) << b
				b += ab
				r
			}
		else
			raise ArgumentError
		end
	end
	alias_method :to_i, :undigits
end
 
# baseは数値または数値の配列
# ty 0:baseは基数, 1:baseはビット数、負のビット数は符号拡張する
class Integer
	def my_digits(base=10,ty=0)
		v = self.to_i
		raise ArgumentError	if v < 0
		if base.is_a?(Array)
			return [0]	if v == 0
			case ty
			when 0
				bs = base.dup
				r = []
				while v > 0
					if bs.empty?
						r << v
						break
					else
						b = bs.pop
						v, n = v.divmod(b)
						r << n
					end
				end
				return r
			when 1
				bs = base.dup
				r = []
				while v > 0
					if bs.empty?
#						r << v
						break
					else
						b = bs.pop
						ab = b.abs
						bv = v & ((1 << ab) - 1)
						if b < 0
							xt = 1 << ab-1
							bv = (bv ^ xt) - xt
						end
						r << bv
						v >>= ab
					end
				end
				return r
			end
			raise ArgumentError
		end
		return [0]	if v == 0
		raise( ArgumentError, 'base' )	if base.is_a?(Integer).! # || base <= 1
		ab = base.abs
		if ty == 0 && ab & (ab-1) == 0	# 2のべき乗?
			base = ab.bit_length - 1	# Math.log2(ab).round
			ty = 1
			ab = base		# debug 2019/12/22 13:39 JST
		end
		r = []
		case ty
		when 0
			raise( ArgumentError, 'base' )	if base <= 1
			while v > 0
				v, n = v.divmod(base)
				r << n
			end
			return r
		when 1
			raise( ArgumentError, 'base' )	if base == 0
			msk = (1 << ab) - 1
			xt = 1 << ab - 1
			while v > 0
				r << ((base < 0)? ((v & msk) ^ xt) - xt : v & msk)
				v >>= ab
			end
			return r
		end
		raise ArgumentError
	end
end
 
# 	Hash#bits( bitFieldHash ) -> Integer
class Hash
	def bits( h )
		raise ArgumentError	unless h.is_a?(Hash)
		h.keys.reverse.map{|k| self[k] || 0 }.undigits( h.values, 1 )
	end
end
 
# Integer#unbit( bitFieldHash ) -> {bitValue}
class Integer
	def unbits( h )
		raise ArgumentError	unless h.is_a?(Hash)
		v = self.my_digits( h.values, 1 )
		v.push( *Array.new( h.size-v.size, 0 ) )	if v.size < h.size
		Hash[ *h.keys.map{|ky| [ky,v.pop || 0] }.flatten ]
	end
end
 
#####################################################################
 
# test v2 2019/12/26
module CheckRet_
	def self.check( f_verbose = false, f_lineNo = false )
		crb = Check_ret_bind_.new.instance_binding
		fl = (f_verbose.is_a?(Hash))? f_verbose[:lineno]  : f_lineNo
		fv = (f_verbose.is_a?(Hash))? f_verbose[:verbose] : f_verbose
		fl &&= fv
		while buff = DATA.gets(chomp:true)
			print "%5d: " % DATA.lineno	if fl
			case
			when /^\s*([^#].*?)#=>(.*)$/ =~ buff
				puts buff	if fv
				syn = $1.strip
				val = $2.strip.sub(/\s*### .*$/,'')
				begin
					ans = eval( syn, crb )
				rescue
					puts "#{DATA.lineno}: #{$!}"
				end
				begin
					if ans != eval( val, crb )
						puts "*** Error : #{syn} #=> #{ans.inspect} != #{val} ***"
					end
				rescue
					puts "#{DATA.lineno}:#=> #{$!}"
				end
			when /^#---/ =~ buff
				puts	if fl
				break	if /^#---\s*END\b/i =~ buff
			when /^\s*#/ =~ buff
				puts buff	if fv
			when buff != ''
				puts buff	if fv
				begin
					eval( buff, crb  )
				rescue
					puts "#{DATA.lineno}: #{$!}"
				end
			else
				puts buff	if fv
			end
		end
	end
 
	private; class Check_ret_bind_; def instance_binding; binding end end
end
 
	CheckRet_.check( lineno:true, verbose:true )
	puts "Done."
 
__END__
	[1, 1, 0, 1, 'hoge'].to_i(2)	#=> 11
	123456789.my_digits([24,60])	#=> [9, 21, 85733]
	123456789.my_digits([24,60,60])	#=> [9,33,21,1428]
 
	Bhms = [24,60,60]
	[9,33,21,1428,'d h:m:s'].undigits(Bhms)		#=> 123456789
	123456789.my_digits(Bhms).undigits(Bhms)	#=> 123456789
	[9,33,21,1428, 9,9,9,9].undigits(Bhms)		#=> 123456789
	[9,33,21].undigits(Bhms) 	#=> 77589
	[9,33].undigits(Bhms)		#=> 1989
	[9].undigits(Bhms)			#=> 9
 
# ==== bit field test ====
 
	0117.my_digits(8)		#=> [7,1,1]
	0117.my_digits(3,1)		#=> [7,1,1] ### 上と同じ 8 == 2**3
 
	[3,3,7].undigits(3,1).to_s(8)	#=> "733"
	[1,3,7,8,0xFFFF,-1].undigits(3,1).to_s(8)	#=> "770731"
 
	0b0011_100_01.my_digits([4,3,2],1)	#=> [1,4,3]
	[1,4,3].undigits([4,3,2],1).to_s(2)	#=> "1110001"
	0b0011_100_01.my_digits([-4,-3,-2],1)	#=> [1,-4,3] ### (-4:符号拡張)
	[1,-4,3].undigits([4,3,2],1).to_s(2)	#=> "1110001"
	[1,-4,3].undigits([-4,-3,-2],1).to_s(2)	#=> "1110001" ### (bit数は絶対値)
 
	0b001111_111_11.my_digits([-4,-3,-2],1)	#=> [-1,-1,-1]
	0b001110_110_10.my_digits([-4,-3,-2],1)	#=> [-2,-2,-2]
	0b001100_100_00.my_digits([-4,-3,-2],1)	#=> [0,-4,-4]
 
	0b011111_111_11.my_digits([-4,-3,-2],1)	#=> [-1,-1,-1] ### (範囲外のビットは無視)
	0b011110_110_10.my_digits([-4,-3,-2],1)	#=> [-2,-2,-2]
	0b011100_100_00.my_digits([-4,-3,-2],1)	#=> [0,-4,-4]
 
	0x0FFF.my_digits(-12,1)			#=> [-1]
	0x0FFF.my_digits([-12],1)		#=> [-1]
	[3,3,7].undigits(-3,1).to_s(8)	#=> "733"
	[9,33,21,1428].undigits([-24,-60,-60])	#=> 123456789 ### (これはraiseすべき?)
 
 
	BFset = { foo:2, bar:3, car:3 }		# ビットフィールド名とビット数
	{}.bits( BFset )					#=> 0    ### 0b00_000_000
	{ foo:1 }.bits( BFset )				#=> 0x40 ### 0b01_000_000
	{ car:1, bar:2 }.bits( BFset )		#=> 17   ### 0b00_010_001
	bh = 17.unbits( BFset ) 			#=> {foo:0, bar:2, car:1}
	bh[ :foo ] = 3
	bh									#=> {:foo=>3, :bar=>2, :car=>1}
	bh.bits( BFset )					#=> 209  ### 0b11_010_001
 
	BFset2 = { foo:2, bar:-3, car:-3 }
	bh = 0xFF.unbits( BFset2 ) 			#=> {foo:3, bar:-1, car:-1}
	bh[ :car ] = 0
	bh.bits( BFset )					#=> 0xF8  ### 0b11_111_000

# [digits].my_digits(base)
# [digits].my_digits([base])		# ex. [9,33,21,1428].undigits([24,60,60]) #=> 123456789
# baseは数値または数値の配列
# ty 0:baseは基数, 1:baseは |ビット数|
class Array
	def undigits(base=10,ty=0)
		if base.is_a?(Array)
			case ty
			when 0
				bs = [*base,1]
				b = 1
				return self.inject(0){|r,i|
					if bs.empty?
#						raise ArgumentError
						return r
					else
						b *= bs.pop.abs
						next b * i + r	if i.is_a?(Integer)
#						raise ArgumentError
						r
					end
				}
			when 1
				bs = base.dup
				b = 0
				return self.inject(0){|r,i|
					if bs.empty?
#						raise ArgumentError
						return r
					else
						ab = bs.pop.abs
						val =  r | ((i & (1 << ab) - 1) << b)
						b += ab
						next val
					end
				}
			end
			raise ArgumentError, 'type'
		end
		raise( ArgumentError, 'base' )	if base.is_a?(Integer).!
		case ty
		when 0
			raise( ArgumentError, 'base' )	if base <= 1
			return self.reverse.inject(0){|r,i|
				next base * r + i	if i.is_a?(Integer)
#				raise ArgumentError
				r
			}
		when 1
			raise( ArgumentError, 'base' )	if base == 0
			ab = base.abs
			msk = (1 << ab) - 1
			b = 0
			return self.inject(0){|r,i|
#				raise ArgumentError	unles i.is_a?(Integer)
				next r	unless i.is_a?(Integer)
				r += (i & msk) << b
				b += ab
				r
			}
		else
			raise ArgumentError
		end
	end
	alias_method :to_i, :undigits
end

# baseは数値または数値の配列
# ty 0:baseは基数, 1:baseはビット数、負のビット数は符号拡張する
class Integer
	def my_digits(base=10,ty=0)
		v = self.to_i
		raise ArgumentError	if v < 0
		if base.is_a?(Array)
			return [0]	if v == 0
			case ty
			when 0
				bs = base.dup
				r = []
				while v > 0
					if bs.empty?
						r << v
						break
					else
						b = bs.pop
						v, n = v.divmod(b)
						r << n
					end
				end
				return r
			when 1
				bs = base.dup
				r = []
				while v > 0
					if bs.empty?
#						r << v
						break
					else
						b = bs.pop
						ab = b.abs
						bv = v & ((1 << ab) - 1)
						if b < 0
							xt = 1 << ab-1
							bv = (bv ^ xt) - xt
						end
						r << bv
						v >>= ab
					end
				end
				return r
			end
			raise ArgumentError
		end
		return [0]	if v == 0
		raise( ArgumentError, 'base' )	if base.is_a?(Integer).! # || base <= 1
		ab = base.abs
		if ty == 0 && ab & (ab-1) == 0	# 2のべき乗?
			base = ab.bit_length - 1	# Math.log2(ab).round
			ty = 1
			ab = base		# debug 2019/12/22 13:39 JST
		end
		r = []
		case ty
		when 0
			raise( ArgumentError, 'base' )	if base <= 1
			while v > 0
				v, n = v.divmod(base)
				r << n
			end
			return r
		when 1
			raise( ArgumentError, 'base' )	if base == 0
			msk = (1 << ab) - 1
			xt = 1 << ab - 1
			while v > 0
				r << ((base < 0)? ((v & msk) ^ xt) - xt : v & msk)
				v >>= ab
			end
			return r
		end
		raise ArgumentError
	end
end

# 	Hash#bits( bitFieldHash ) -> Integer
class Hash
	def bits( h )
		raise ArgumentError	unless h.is_a?(Hash)
		h.keys.reverse.map{|k| self[k] || 0 }.undigits( h.values, 1 )
	end
end

# Integer#unbit( bitFieldHash ) -> {bitValue}
class Integer
	def unbits( h )
		raise ArgumentError	unless h.is_a?(Hash)
		v = self.my_digits( h.values, 1 )
		v.push( *Array.new( h.size-v.size, 0 ) )	if v.size < h.size
		Hash[ *h.keys.map{|ky| [ky,v.pop || 0] }.flatten ]
	end
end

#####################################################################

# test v2 2019/12/26
module CheckRet_
	def self.check( f_verbose = false, f_lineNo = false )
		crb = Check_ret_bind_.new.instance_binding
		fl = (f_verbose.is_a?(Hash))? f_verbose[:lineno]  : f_lineNo
		fv = (f_verbose.is_a?(Hash))? f_verbose[:verbose] : f_verbose
		fl &&= fv
		while buff = DATA.gets(chomp:true)
			print "%5d: " % DATA.lineno	if fl
			case
			when /^\s*([^#].*?)#=>(.*)$/ =~ buff
				puts buff	if fv
				syn = $1.strip
				val = $2.strip.sub(/\s*### .*$/,'')
				begin
					ans = eval( syn, crb )
				rescue
					puts "#{DATA.lineno}: #{$!}"
				end
				begin
					if ans != eval( val, crb )
						puts "*** Error : #{syn} #=> #{ans.inspect} != #{val} ***"
					end
				rescue
					puts "#{DATA.lineno}:#=> #{$!}"
				end
			when /^#---/ =~ buff
				puts	if fl
				break	if /^#---\s*END\b/i =~ buff
			when /^\s*#/ =~ buff
				puts buff	if fv
			when buff != ''
				puts buff	if fv
				begin
					eval( buff, crb  )
				rescue
					puts "#{DATA.lineno}: #{$!}"
				end
			else
				puts buff	if fv
			end
		end
	end

	private; class Check_ret_bind_; def instance_binding; binding end end
end

	CheckRet_.check( lineno:true, verbose:true )
	puts "Done."

__END__
	[1, 1, 0, 1, 'hoge'].to_i(2)	#=> 11
	123456789.my_digits([24,60])	#=> [9, 21, 85733]
	123456789.my_digits([24,60,60])	#=> [9,33,21,1428]

	Bhms = [24,60,60]
	[9,33,21,1428,'d h:m:s'].undigits(Bhms)		#=> 123456789
	123456789.my_digits(Bhms).undigits(Bhms)	#=> 123456789
	[9,33,21,1428, 9,9,9,9].undigits(Bhms)		#=> 123456789
	[9,33,21].undigits(Bhms) 	#=> 77589
	[9,33].undigits(Bhms)		#=> 1989
	[9].undigits(Bhms)			#=> 9

# ==== bit field test ====

	0117.my_digits(8)		#=> [7,1,1]
	0117.my_digits(3,1)		#=> [7,1,1] ### 上と同じ 8 == 2**3

	[3,3,7].undigits(3,1).to_s(8)	#=> "733"
	[1,3,7,8,0xFFFF,-1].undigits(3,1).to_s(8)	#=> "770731"

	0b0011_100_01.my_digits([4,3,2],1)	#=> [1,4,3]
	[1,4,3].undigits([4,3,2],1).to_s(2)	#=> "1110001"
	0b0011_100_01.my_digits([-4,-3,-2],1)	#=> [1,-4,3] ### (-4:符号拡張)
	[1,-4,3].undigits([4,3,2],1).to_s(2)	#=> "1110001"
	[1,-4,3].undigits([-4,-3,-2],1).to_s(2)	#=> "1110001" ### (bit数は絶対値)

	0b001111_111_11.my_digits([-4,-3,-2],1)	#=> [-1,-1,-1]
	0b001110_110_10.my_digits([-4,-3,-2],1)	#=> [-2,-2,-2]
	0b001100_100_00.my_digits([-4,-3,-2],1)	#=> [0,-4,-4]

	0b011111_111_11.my_digits([-4,-3,-2],1)	#=> [-1,-1,-1] ### (範囲外のビットは無視)
	0b011110_110_10.my_digits([-4,-3,-2],1)	#=> [-2,-2,-2]
	0b011100_100_00.my_digits([-4,-3,-2],1)	#=> [0,-4,-4]

	0x0FFF.my_digits(-12,1)			#=> [-1]
	0x0FFF.my_digits([-12],1)		#=> [-1]
	[3,3,7].undigits(-3,1).to_s(8)	#=> "733"
	[9,33,21,1428].undigits([-24,-60,-60])	#=> 123456789 ### (これはraiseすべき?)


	BFset = { foo:2, bar:3, car:3 }		# ビットフィールド名とビット数
	{}.bits( BFset )					#=> 0    ### 0b00_000_000
	{ foo:1 }.bits( BFset )				#=> 0x40 ### 0b01_000_000
	{ car:1, bar:2 }.bits( BFset )		#=> 17   ### 0b00_010_001
	bh = 17.unbits( BFset ) 			#=> {foo:0, bar:2, car:1}
	bh[ :foo ] = 3
	bh									#=> {:foo=>3, :bar=>2, :car=>1}
	bh.bits( BFset )					#=> 209  ### 0b11_010_001

	BFset2 = { foo:2, bar:-3, car:-3 }
	bh = 0xFF.unbits( BFset2 ) 			#=> {foo:3, bar:-1, car:-1}
	bh[ :car ] = 0
	bh.bits( BFset )					#=> 0xF8  ### 0b11_111_000


Success #stdin #stdout 0.01s 6604KB

stdin

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Standard input is empty

stdout

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  215: 	[1, 1, 0, 1, 'hoge'].to_i(2)	#=> 11
  216: 	123456789.my_digits([24,60])	#=> [9, 21, 85733]
  217: 	123456789.my_digits([24,60,60])	#=> [9,33,21,1428]
  218: 
  219: 	Bhms = [24,60,60]
  220: 	[9,33,21,1428,'d h:m:s'].undigits(Bhms)		#=> 123456789
  221: 	123456789.my_digits(Bhms).undigits(Bhms)	#=> 123456789
  222: 	[9,33,21,1428, 9,9,9,9].undigits(Bhms)		#=> 123456789
  223: 	[9,33,21].undigits(Bhms) 	#=> 77589
  224: 	[9,33].undigits(Bhms)		#=> 1989
  225: 	[9].undigits(Bhms)			#=> 9
  226: 
  227: # ==== bit field test ====
  228: 
  229: 	0117.my_digits(8)		#=> [7,1,1]
  230: 	0117.my_digits(3,1)		#=> [7,1,1] ### 上と同じ 8 == 2**3
  231: 
  232: 	[3,3,7].undigits(3,1).to_s(8)	#=> "733"
  233: 	[1,3,7,8,0xFFFF,-1].undigits(3,1).to_s(8)	#=> "770731"
  234: 
  235: 	0b0011_100_01.my_digits([4,3,2],1)	#=> [1,4,3]
  236: 	[1,4,3].undigits([4,3,2],1).to_s(2)	#=> "1110001"
  237: 	0b0011_100_01.my_digits([-4,-3,-2],1)	#=> [1,-4,3] ### (-4:符号拡張)
  238: 	[1,-4,3].undigits([4,3,2],1).to_s(2)	#=> "1110001"
  239: 	[1,-4,3].undigits([-4,-3,-2],1).to_s(2)	#=> "1110001" ### (bit数は絶対値)
  240: 
  241: 	0b001111_111_11.my_digits([-4,-3,-2],1)	#=> [-1,-1,-1]
  242: 	0b001110_110_10.my_digits([-4,-3,-2],1)	#=> [-2,-2,-2]
  243: 	0b001100_100_00.my_digits([-4,-3,-2],1)	#=> [0,-4,-4]
  244: 
  245: 	0b011111_111_11.my_digits([-4,-3,-2],1)	#=> [-1,-1,-1] ### (範囲外のビットは無視)
  246: 	0b011110_110_10.my_digits([-4,-3,-2],1)	#=> [-2,-2,-2]
  247: 	0b011100_100_00.my_digits([-4,-3,-2],1)	#=> [0,-4,-4]
  248: 
  249: 	0x0FFF.my_digits(-12,1)			#=> [-1]
  250: 	0x0FFF.my_digits([-12],1)		#=> [-1]
  251: 	[3,3,7].undigits(-3,1).to_s(8)	#=> "733"
  252: 	[9,33,21,1428].undigits([-24,-60,-60])	#=> 123456789 ### (これはraiseすべき?)
  253: 
  254: 
  255: 	BFset = { foo:2, bar:3, car:3 }		# ビットフィールド名とビット数
  256: 	{}.bits( BFset )					#=> 0    ### 0b00_000_000
  257: 	{ foo:1 }.bits( BFset )				#=> 0x40 ### 0b01_000_000
  258: 	{ car:1, bar:2 }.bits( BFset )		#=> 17   ### 0b00_010_001
  259: 	bh = 17.unbits( BFset ) 			#=> {foo:0, bar:2, car:1}
  260: 	bh[ :foo ] = 3
  261: 	bh									#=> {:foo=>3, :bar=>2, :car=>1}
  262: 	bh.bits( BFset )					#=> 209  ### 0b11_010_001
  263: 
  264: 	BFset2 = { foo:2, bar:-3, car:-3 }
  265: 	bh = 0xFF.unbits( BFset2 ) 			#=> {foo:3, bar:-1, car:-1}
  266: 	bh[ :car ] = 0
  267: 	bh.bits( BFset )					#=> 0xF8  ### 0b11_111_000
Done.

https://ideone.com/xvXVfv

digits / undigits ver2

language:

Ruby (ruby 2.5.5)

created:

visibility:

public

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