Class: Fbe::Award::Bylaw

Inherits:
Object
  • Object
show all
Defined in:
lib/fbe/award.rb

Overview

A class for generating human-readable bylaws.

This class builds textual descriptions of award bylaws including introductions, calculation steps, and variable substitutions. It produces Markdown-formatted output describing how awards are calculated.

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Bylaw

Creates a new empty bylaw.

Examples:

bylaw = Fbe::Award::Bylaw.new



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# File 'lib/fbe/award.rb', line 420

def initialize
  @lines = []
  @intro = ''
  @lets = {}
end

Instance Attribute Details

#vars ⇒ Hash (readonly) 



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# File 'lib/fbe/award.rb', line 414

def vars
  @vars
end

Instance Method Details

#intro(text) ⇒ String

Sets the introductory text for the bylaw.

Examples:

bylaw = Fbe::Award::Bylaw.new
bylaw.intro("This bylaw determines rewards for code contributions")



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# File 'lib/fbe/award.rb', line 446

def intro(text)
  @intro = text
end

#let(key, value) ⇒ Object

Registers a variable with its value for substitution in lines.

Examples:

bylaw = Fbe::Award::Bylaw.new
bylaw.let(:points, 50)



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# File 'lib/fbe/award.rb', line 471

def let(key, value)
  @lets[key] = value
end

#line(line) ⇒ nil

Adds a line of text to the bylaw, replacing variable references.

Examples:

bylaw = Fbe::Award::Bylaw.new
bylaw.let(:points, 50)
bylaw.line("award ${points} points")



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# File 'lib/fbe/award.rb', line 458

def line(line)
  line = line.gsub(/\$\{([a-z_0-9]+)\}/) { |_x| "**#{@lets[Regexp.last_match[1].to_sym]}**" }
  @lines << line
end

#markdown ⇒ String

Generates a Markdown-formatted representation of the bylaw.

Examples:

bylaw = Fbe::Award::Bylaw.new
bylaw.intro("This bylaw determines rewards for code contributions")
bylaw.line("award **50** points")
bylaw.markdown
#=> "This bylaw determines rewards for code contributions. Just award **50** points."



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# File 'lib/fbe/award.rb', line 484

def markdown
  pars = []
  pars << "#{@intro}." unless @intro.empty?
  pars << 'Here is how it\'s calculated:'
  if @lines.size == 1
    pars << "Just #{@lines.first}."
  else
    pars += @lines.each_with_index.map { |t, i| "#{i.zero? ? 'First' : 'Then'}, #{t}." }
  end
  pars.join(' ').gsub('. Then, award ', ', and award ').gsub(/\s{2,}/, ' ')
end

#revert(num) ⇒ Array

Removes the specified number of most recently added lines.

Examples:

bylaw = Fbe::Award::Bylaw.new
bylaw.line("award 50 points")
bylaw.line("award 30 points")
bylaw.revert(1) # Removes "award 30 points"



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# File 'lib/fbe/award.rb', line 435

def revert(num)
  @lines.slice!(-num, num)
end