class BCDice::CommonCommand::Lexer
Constants
- SYMBOLS
Public Class Methods
new(source)
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# File lib/bcdice/common_command/lexer.rb, line 22 def initialize(source) # sourceが空文字だとString#splitが空になる source = source.split(" ", 2).first || "" @scanner = StringScanner.new(source) end
Public Instance Methods
next_token()
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# File lib/bcdice/common_command/lexer.rb, line 28 def next_token return [false, "$"] if @scanner.eos? if (number = @scanner.scan(/\d+/)) [:NUMBER, number.to_i] elsif (cmp_op = @scanner.scan(/[<>!=]+/)) [:CMP_OP, Normalize.comparison_operator(cmp_op)] else char = @scanner.getch.upcase type = SYMBOLS[char] || char.to_sym [type, char] end end
source()
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# File lib/bcdice/common_command/lexer.rb, line 42 def source @scanner.string end