Class: GenBrain::Generator

Inherits:
Object
  • Object
show all
Defined in:
lib/gen_brain/generator.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(config) ⇒ Generator

Returns a new instance of Generator.



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# File 'lib/gen_brain/generator.rb', line 6

def initialize(config)
  @title = config["title"]
  @p_inc = config["p_inc"]
  @p_dec = config["p_dec"]
  @v_inc = config["v_inc"]
  @v_dec = config["v_dec"]
  @output= config["output"]
  @input = config["input"]
  @jump_forward = config["jump_forward"]
  @jump_back = config["jump_back"]
end

Instance Attribute Details

#input ⇒ Object

Returns the value of attribute input.



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# File 'lib/gen_brain/generator.rb', line 3

def input
  @input
end

#jump_back ⇒ Object

Returns the value of attribute jump_back.



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# File 'lib/gen_brain/generator.rb', line 3

def jump_back
  @jump_back
end

#jump_forward ⇒ Object

Returns the value of attribute jump_forward.



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# File 'lib/gen_brain/generator.rb', line 3

def jump_forward
  @jump_forward
end

#output ⇒ Object

Returns the value of attribute output.



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# File 'lib/gen_brain/generator.rb', line 3

def output
  @output
end

#p_dec ⇒ Object

Returns the value of attribute p_dec.



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# File 'lib/gen_brain/generator.rb', line 3

def p_dec
  @p_dec
end

#p_inc ⇒ Object

Returns the value of attribute p_inc.



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# File 'lib/gen_brain/generator.rb', line 3

def p_inc
  @p_inc
end

#title ⇒ Object

Returns the value of attribute title.



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# File 'lib/gen_brain/generator.rb', line 3

def title
  @title
end

#v_dec ⇒ Object

Returns the value of attribute v_dec.



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# File 'lib/gen_brain/generator.rb', line 3

def v_dec
  @v_dec
end

#v_inc ⇒ Object

Returns the value of attribute v_inc.



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# File 'lib/gen_brain/generator.rb', line 3

def v_inc
  @v_inc
end

Instance Method Details

#call ⇒ Object 



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# File 'lib/gen_brain/generator.rb', line 31

def call
  File.write("#{title}.rb", lang)
  File.write("#{title}_hello_world", hello_world_input_sample)
  puts "🎉 Created #{title}.rb and #{title}_hello_world"
  puts "🌈 Let's execute the following code!!"
  puts "#=> ruby #{title}.rb #{title}_hello_world"
end

#hello_world_input_sample ⇒ Object 



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# File 'lib/gen_brain/generator.rb', line 106

def hello_world_input_sample
  "+++++++++[>++++++++>+++++++++++>+++++<<<-]>.>++.+++++++..+++.>-.------------.<++++++++.--------.+++.------.--------.>+.".
    gsub(/\>/, p_inc).
    gsub(/\</, p_dec).
    gsub(/\+/, v_inc).
    gsub(/\-/, v_dec).
    gsub(/\./, output).
    gsub(/\,/, input).
    gsub(/\[/, jump_forward).
    gsub(/\]/, jump_back)
end

#lang ⇒ Object 



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# File 'lib/gen_brain/generator.rb', line 39

def lang
  class_name = title.split(/[^[:alnum:]]+/).map(&:capitalize).join
"#!/usr/bin/env ruby\n\nclass \#{class_name}\n  def initialize(code)\n@tokens = code.scan(/(\#{words})/).flatten\n@jumps = analyze_jumps(@tokens)\n  end\n\n  def run\narray = []\nindex = 0\nnow = 0\n\nwhile index < @tokens.size\n  case @tokens[index]\n    when \"\#{v_inc}\"\n      array[now] ||= 0\n      array[now] += 1\n    when \"\#{v_dec}\"\n      array[now] ||= 0\n      array[now] -= 1\n    when \"\#{p_inc}\"\n      now += 1\n    when \"\#{p_dec}\"\n      now -= 1\n    when \"\#{output}\"\n      n = (array[now] || 0)\n      print n.chr\n    when \"\#{input}\"\n      array[now] = $stdin.getc\n    when \"\#{jump_forward}\"\n      index = @jumps[index] if array[now] == 0\n    when \"\#{jump_back}\"\n      index = @jumps[index] if array[now] != 0\n  end\n  index += 1\nend\n  end\n\n  private\n\n  def analyze_jumps(tokens)\nstack = []\njumps = {}\nstart_word = \"\#{jump_forward}\"\nend_word = \"\#{jump_back}\"\ntokens.each_with_index do |v,i|\n  if v == start_word\n    stack.push(i)\n  elsif v == end_word\n    from = stack.pop\n    to = i\n    jumps[from] = to\n    jumps[to] = from\n  end\nend\njumps\n  end\nend\n\n\#{class_name}.new(ARGF.read).run\n"
end

#words ⇒ Object 



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# File 'lib/gen_brain/generator.rb', line 18

def words
  [
    p_inc,
    p_dec,
    v_inc,
    v_dec,
    output,
    input,
    jump_forward,
    jump_back
  ].map{|word|Regexp.escape(word)}.join('|')
end