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