Class: ABNF::Parser::Compiler::RuleList

Inherits:
RuleBuilder show all
Defined in:
lib/abnf/parser/compiler/rule_list.rb

Defined Under Namespace

Classes: Rule

Instance Attribute Summary collapse

Attributes inherited from RuleBuilder

#compiler

Instance Method Summary collapse

Methods inherited from RuleBuilder

#call, #initialize, #start_rule

Constructor Details

This class inherits a constructor from ABNF::Parser::Compiler::RuleBuilder

Instance Attribute Details

#rulename(token) ⇒ Object

Returns the value of attribute rulename.



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# File 'lib/abnf/parser/compiler/rule_list.rb', line 5

def rulename
  @rulename
end

Instance Method Details

#c_nl(token) ⇒ Object 



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# File 'lib/abnf/parser/compiler/rule_list.rb', line 7

def c_nl token
end

#coerce_alternation(rule) ⇒ Object 



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# File 'lib/abnf/parser/compiler/rule_list.rb', line 10

def coerce_alternation rule
  if rule.is_a? Rules::Alternation
    rule
  else
    Rules::Alternation.new [rule], rule.abnf
  end
end

#handle_rule(name, rule) ⇒ Object 



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# File 'lib/abnf/parser/compiler/rule_list.rb', line 18

def handle_rule name, rule
  actual_rule = rule.inner_rule

  if rule.operator == '=/'
    original_rule = coerce_alternation rule_list[name]
    new_rule = coerce_alternation actual_rule

    alternatives = original_rule.alternatives + new_rule.alternatives
    abnf = alternatives.map &:abnf
    abnf *= ' / '
    actual_rule = Rules::Alternation.new alternatives, abnf
  end

  rule_list[name] = actual_rule
end

#rule_list ⇒ Object 



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# File 'lib/abnf/parser/compiler/rule_list.rb', line 34

def rule_list
  compiler.rule_list
end