Class: Antelope::Generator::Ruby

Inherits:
Base
  • Object
show all
Defined in:
lib/antelope/generator/ruby.rb

Overview

Generates a ruby parser.

Instance Attribute Summary

Attributes inherited from Base

#file, #grammar, #mods

Instance Method Summary collapse

Methods inherited from Base

#initialize, #productions, register_as, source_root, #table, #template

Constructor Details

This class inherits a constructor from Antelope::Generator::Base

Instance Method Details

#generate ⇒ void

This method returns an undefined value.

Actually performs the generation. Takes the template from ruby.erb and outputs it to <file>_parser.rb.



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# File 'lib/antelope/generator/ruby.rb', line 54

def generate
  template "ruby.erb", "#{file}.rb" do |body|
    sprintf(grammar.compiler.body, :write => body)
  end
end

#generate_action_table ⇒ String

Creates an action table for the parser.

Returns:

  • (String) 


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# File 'lib/antelope/generator/ruby.rb', line 16

def generate_action_table
  out = ""
  PP.pp(table, out)
  out
end

#generate_productions_list ⇒ String

Outputs an array of all of the productions.

Returns:

  • (String) 


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# File 'lib/antelope/generator/ruby.rb', line 25

def generate_productions_list
  out = "["

  productions.each do |(label, size, block)|
    out                   <<
      "["                 <<
      label.name.inspect  <<
      ", "                <<
      size.inspect        <<
      ", "

    block = if block.empty?
      "proc { |_| _ }"
    else
      "proc #{production.block}"
    end

    out << block << "],\n"
  end

  out.chomp!(",\n")

  out << "]"
end