class Parser::Lexer::StackState
Public Class Methods
new(name)
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# File lib/parser/lexer/stack_state.rb, line 6 def initialize(name) @name = name.freeze clear end
Public Instance Methods
active?()
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# File lib/parser/lexer/stack_state.rb, line 34 def active? @stack[0] == 1 end
clear()
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# File lib/parser/lexer/stack_state.rb, line 11 def clear @stack = 0 end
empty?()
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# File lib/parser/lexer/stack_state.rb, line 38 def empty? @stack == 0 end
lexpop()
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# File lib/parser/lexer/stack_state.rb, line 29 def lexpop @stack = ((@stack >> 1) | (@stack & 1)) @stack[0] == 1 end
pop()
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# File lib/parser/lexer/stack_state.rb, line 22 def pop bit_value = @stack & 1 @stack >>= 1 bit_value == 1 end
push(bit)
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# File lib/parser/lexer/stack_state.rb, line 15 def push(bit) bit_value = bit ? 1 : 0 @stack = (@stack << 1) | bit_value bit end
to_s()
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# File lib/parser/lexer/stack_state.rb, line 42 def to_s "[#{@stack.to_s(2)} <= #{@name}]" end
Also aliased as: inspect