Class: Bake::Arguments

Inherits:
Object
  • Object
show all
Defined in:
lib/bake/arguments.rb

Overview

Structured access to arguments.

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(recipe, defaults) ⇒ Arguments

Returns a new instance of Arguments.



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# File 'lib/bake/arguments.rb', line 19

def initialize(recipe, defaults)
  @recipe = recipe
  
  @types = recipe.types
  @parameters = recipe.parameters
  @arity = recipe.arity
  
  @ordered = []
  @options = defaults
end

Instance Attribute Details

#options ⇒ Object (readonly)

Returns the value of attribute options.



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# File 'lib/bake/arguments.rb', line 31

def options
  @options
end

#ordered ⇒ Object (readonly)

Returns the value of attribute ordered.



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# File 'lib/bake/arguments.rb', line 30

def ordered
  @ordered
end

Class Method Details

.extract(recipe, arguments, **defaults) ⇒ Object 



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# File 'lib/bake/arguments.rb', line 12

def self.extract(recipe, arguments, **defaults)
  # Only supply defaults that match the recipe option names:
  defaults = defaults.slice(*recipe.required_options)
  
  self.new(recipe, defaults).extract(arguments)
end

Instance Method Details

#extract(arguments) ⇒ Object 



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# File 'lib/bake/arguments.rb', line 33

def extract(arguments)
  while argument = arguments.first
    if /^--(?<name>.*)$/ =~ argument
      # Consume the argument:
      arguments.shift
      
      if name.empty?
        break
      end
      
      name = normalize(name)
      
      # Extract the trailing arguments:
      @options[name] = extract_arguments(name, arguments)
    elsif /^(?<name>.*?)=(?<value>.*)$/ =~ argument
      # Consume the argument:
      arguments.shift
      
      name = name.to_sym
      
      # Extract the single argument:
      @options[name] = extract_argument(name, value)
    elsif @ordered.size < @arity
      _, name = @parameters.shift
      value = arguments.shift
      
      # Consume it:
      @ordered << extract_argument(name, value)
    else
      break
    end
  end
  
  return @ordered, @options
end