Class: Bake::Recipe

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

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(instance, name, method = nil) ⇒ Recipe

Returns a new instance of Recipe.



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# File 'lib/bake/recipe.rb', line 27

def initialize(instance, name, method = nil)
  @instance = instance
  @name = name
  @command = nil
  @description = nil
  @types = nil
  
  @method = method
  @arity = nil
end

Instance Attribute Details

#instance ⇒ Object (readonly)

Returns the value of attribute instance.



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# File 'lib/bake/recipe.rb', line 38

def instance
  @instance
end

#name ⇒ Object (readonly)

Returns the value of attribute name.



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# File 'lib/bake/recipe.rb', line 39

def name
  @name
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/bake/recipe.rb', line 41

def <=> other
  self.source_location <=> other.source_location
end

#arity ⇒ Object 



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# File 'lib/bake/recipe.rb', line 77

def arity
  if @arity.nil?
    @arity = method.parameters.count{|type, name| type == :req}
  end
  
  return @arity
end

#call(*arguments, **options) ⇒ Object 



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# File 'lib/bake/recipe.rb', line 122

def call(*arguments, **options)
  if options?
    @instance.send(@name, *arguments, **options)
  else
    # Ignore options...
    @instance.send(@name, *arguments)
  end
end

#command ⇒ Object 



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# File 'lib/bake/recipe.rb', line 69

def command
  @command ||= compute_command
end

#description ⇒ Object 



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# File 'lib/bake/recipe.rb', line 139

def description
  @description ||= read_description
end

#explain(context, *arguments, **options) ⇒ Object 



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# File 'lib/bake/recipe.rb', line 131

def explain(context, *arguments, **options)
  if options?
    puts "#{self}(#{arguments.join(", ")}, #{options.inspect})"
  else
    puts "#{self}(#{arguments.join(", ")})"
  end
end

#method ⇒ Object 



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# File 'lib/bake/recipe.rb', line 45

def method
  @method ||= @instance.method(@name)
end

#options? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/bake/recipe.rb', line 61

def options?
  if parameters = self.parameters
    type, name = parameters.last
    
    return type == :keyrest || type == :keyreq || type == :key
  end
end

#parameters ⇒ Object 



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# File 'lib/bake/recipe.rb', line 53

def parameters
  parameters = method.parameters
  
  unless parameters.empty?
    return parameters
  end
end

#prepare(arguments) ⇒ Object 



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# File 'lib/bake/recipe.rb', line 85

def prepare(arguments)
  offset = 0
  ordered = []
  options = {}
  parameters = method.parameters.dup
  types = self.types
  
  while argument = arguments.first
    name, value = argument.split('=', 2)
    
    if name and value
      # Consume it:
      arguments.shift
      
      if type = types[name.to_sym]
        value = type.parse(value)
      end
      
      options[name.to_sym] = value
    elsif ordered.size < self.arity
      _, name = parameters.shift
      value = arguments.shift
      
      if type = types[name]
        value = type.parse(value)
      end
      
      # Consume it:
      ordered << value
    else
      break
    end
  end
  
  return ordered, options
end

#source_location ⇒ Object 



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# File 'lib/bake/recipe.rb', line 49

def source_location
  self.method.source_location
end

#to_s ⇒ Object 



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# File 'lib/bake/recipe.rb', line 73

def to_s
  self.command
end

#types ⇒ Object 



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# File 'lib/bake/recipe.rb', line 143

def types
  @types ||= read_types
end