class Rake::TaskArguments

TaskArguments manage the arguments passed to a task.

Attributes

names[R]

Public Class Methods

new(names, values, parent=nil) click to toggle source

Create a TaskArgument object with a list of named arguments (given by :names) and a set of associated values (given by :values). :parent is the parent argument object.

   # File lib/rake/task_arguments.rb
14 def initialize(names, values, parent=nil)
15   @names = names
16   @parent = parent
17   @hash = {}
18   names.each_with_index { |name, i|
19     @hash[name.to_sym] = values[i] unless values[i].nil?
20   }
21 end

Public Instance Methods

[](index) click to toggle source

Find an argument value by name or index.

   # File lib/rake/task_arguments.rb
31 def [](index)
32   lookup(index.to_sym)
33 end
each(&block) click to toggle source
   # File lib/rake/task_arguments.rb
42 def each(&block)
43   @hash.each(&block)
44 end
inspect() click to toggle source
   # File lib/rake/task_arguments.rb
58 def inspect
59   to_s
60 end
method_missing(sym, *args, &block) click to toggle source
   # File lib/rake/task_arguments.rb
46 def method_missing(sym, *args, &block)
47   lookup(sym.to_sym)
48 end
new_scope(names) click to toggle source

Create a new argument scope using the prerequisite argument names.

   # File lib/rake/task_arguments.rb
25 def new_scope(names)
26   values = names.collect { |n| self[n] }
27   self.class.new(names, values, self)
28 end
to_hash() click to toggle source
   # File lib/rake/task_arguments.rb
50 def to_hash
51   @hash
52 end
to_s() click to toggle source
   # File lib/rake/task_arguments.rb
54 def to_s
55   @hash.inspect
56 end
with_defaults(defaults) click to toggle source

Specify a hash of default values for task arguments. Use the defaults only if there is no specific value for the given argument.

   # File lib/rake/task_arguments.rb
38 def with_defaults(defaults)
39   @hash = defaults.merge(@hash)
40 end

Protected Instance Methods

lookup(name) click to toggle source
   # File lib/rake/task_arguments.rb
64 def lookup(name)
65   if @hash.has_key?(name)
66     @hash[name]
67   elsif @parent
68     @parent.lookup(name)
69   end
70 end