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module Lrama
class Grammar
class ParameterizingRules
class Builder
class SeparatedList < Base
def initialize(token, rule_counter, lhs, user_code, precedence_sym, line)
super
@separator = @args[0]
@token = @args[1]
@expected_argument_num = 2
end
def build
validate_argument_number!
rules = []
separated_list_token = Lrama::Lexer::Token::Ident.new(s_value: "separated_list_#{@token.s_value}")
rules << Rule.new(id: @rule_counter.increment, _lhs: @lhs, _rhs: [separated_list_token], token_code: @user_code, precedence_sym: @precedence_sym, lineno: @line)
rules << Rule.new(id: @rule_counter.increment, _lhs: separated_list_token, _rhs: [], token_code: @user_code, precedence_sym: @precedence_sym, lineno: @line)
rules << Rule.new(id: @rule_counter.increment, _lhs: separated_list_token, _rhs: [@token], token_code: @user_code, precedence_sym: @precedence_sym, lineno: @line)
rules << Rule.new(id: @rule_counter.increment, _lhs: separated_list_token, _rhs: [separated_list_token, @separator, @token], token_code: @user_code, precedence_sym: @precedence_sym, lineno: @line)
rules
end
end
end
end
end
end
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