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require 'lrama/grammar/parameterizing_rules/builder/base'
require 'lrama/grammar/parameterizing_rules/builder/list'
require 'lrama/grammar/parameterizing_rules/builder/nonempty_list'
require 'lrama/grammar/parameterizing_rules/builder/option'
require 'lrama/grammar/parameterizing_rules/builder/separated_nonempty_list'
require 'lrama/grammar/parameterizing_rules/builder/separated_list'
module Lrama
class Grammar
class ParameterizingRules
class Builder
RULES = {
option: Lrama::Grammar::ParameterizingRules::Builder::Option,
"?": Lrama::Grammar::ParameterizingRules::Builder::Option,
nonempty_list: Lrama::Grammar::ParameterizingRules::Builder::NonemptyList,
"+": Lrama::Grammar::ParameterizingRules::Builder::NonemptyList,
list: Lrama::Grammar::ParameterizingRules::Builder::List,
"*": Lrama::Grammar::ParameterizingRules::Builder::List,
separated_nonempty_list: Lrama::Grammar::ParameterizingRules::Builder::SeparatedNonemptyList,
separated_list: Lrama::Grammar::ParameterizingRules::Builder::SeparatedList,
}
def initialize(token, rule_counter, lhs, user_code, precedence_sym, line)
@token = token
@key = token.s_value.to_sym
@rule_counter = rule_counter
@lhs = lhs
@user_code = user_code
@precedence_sym = precedence_sym
@line = line
end
def build
if RULES.key?(@key)
RULES[@key].new(@token, @rule_counter, @lhs, @user_code, @precedence_sym, @line).build
else
raise "Parameterizing rule does not exist. `#{@key}`"
end
end
end
end
end
end
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