Class: Bison::GrammarFile

Inherits:
Object
  • Object
show all
Defined in:
lib/bison/grammar_file.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(tokens, rules, code) ⇒ GrammarFile

Returns a new instance of GrammarFile.



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# File 'lib/bison/grammar_file.rb', line 9

def initialize(tokens, rules, code)
  @tokens, @rules, @code = tokens, rules, code
end

Instance Attribute Details

#code ⇒ Object (readonly)

Returns the value of attribute code.



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# File 'lib/bison/grammar_file.rb', line 7

def code
  @code
end

#name ⇒ Object

Returns the value of attribute name.



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# File 'lib/bison/grammar_file.rb', line 6

def name
  @name
end

#rules ⇒ Object (readonly)

Returns the value of attribute rules.



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# File 'lib/bison/grammar_file.rb', line 7

def rules
  @rules
end

#tokens ⇒ Object (readonly)

Returns the value of attribute tokens.



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# File 'lib/bison/grammar_file.rb', line 7

def tokens
  @tokens
end

Instance Method Details



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# File 'lib/bison/grammar_file.rb', line 40

def print_actions_module(out=$stdout)
  template = File.expand_path('../../../templates/actions.rb.erb', __FILE__)
  out.puts(ERB.new(File.read(template), nil, '-').result(binding))
end

#print_base_module(out = $stdout) ⇒ Object 



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# File 'lib/bison/grammar_file.rb', line 35

def print_base_module(out=$stdout)
  template = File.expand_path('../../../templates/base.rb.erb', __FILE__)
  out.puts(ERB.new(File.read(template), nil, '-').result(binding))
end

#print_bison(out = $stdout) ⇒ Object 



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# File 'lib/bison/grammar_file.rb', line 45

def print_bison(out=$stdout)
  template = File.expand_path('../../../templates/parser.y.erb', __FILE__)
  out.puts(ERB.new(File.read(template), nil, '-').result(binding))
end

#print_class(out = $stdout) ⇒ Object 



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# File 'lib/bison/grammar_file.rb', line 30

def print_class(out=$stdout)
  template = File.expand_path('../../../templates/class.rb.erb', __FILE__)
  out.puts(ERB.new(File.read(template), nil, '-').result(binding))
end

#print_extconf(out = $stdout) ⇒ Object 



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# File 'lib/bison/grammar_file.rb', line 50

def print_extconf(out=$stdout)
  template = File.expand_path('../../../templates/extconf.rb.erb', __FILE__)
  out.puts(ERB.new(File.read(template), nil, '-').result(binding))
end

#uname ⇒ Object 



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# File 'lib/bison/grammar_file.rb', line 55

def uname
  name.gsub(/([a-z])([A-Z])/, '\1_\2').downcase
end

#validate ⇒ Object 



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# File 'lib/bison/grammar_file.rb', line 13

def validate
  errors = []
  symbols = tokens.map(&:names).flatten + rules.map(&:name)
  rules.map(&:components).flatten.map(&:elements).flatten.each do |el|
    unless !(Bison::Nonterminal === el) || symbols.include?(el.name)
      errors << "#{el.location.join('.')}: #{el.name} is not defined"
    end
  end
  rules.map(&:components).flatten.each do |seq|
    seq.elements.grep(Bison::Action).each do |action|
      err = action.errors
      errors << err unless err.nil?
    end
  end
  abort(errors.join("\n")) unless errors.empty?
end