class Rake::TaskArguments

TaskAguments 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.rb, line 341
def initialize(names, values, parent=nil)
  @names = names
  @parent = parent
  @hash = {}
  names.each_with_index { |name, i|
    @hash[name.to_sym] = values[i] unless values[i].nil?
  }
end

Public Instance Methods

[](index) click to toggle source

Find an argument value by name or index.

# File lib/rake.rb, line 358
def [](index)
  lookup(index.to_sym)
end

each(&block) click to toggle source

# File lib/rake.rb, line 369
def each(&block)
  @hash.each(&block)
end

inspect() click to toggle source

# File lib/rake.rb, line 385
def inspect
  to_s
end

method_missing(sym, *args, &block) click to toggle source

# File lib/rake.rb, line 373
def method_missing(sym, *args, &block)
  lookup(sym.to_sym)
end

new_scope(names) click to toggle source

Create a new argument scope using the prerequisite argument names.

# File lib/rake.rb, line 352
def new_scope(names)
  values = names.collect { |n| self[n] }
  self.class.new(names, values, self)
end

to_hash() click to toggle source

# File lib/rake.rb, line 377
def to_hash
  @hash
end

to_s() click to toggle source

# File lib/rake.rb, line 381
def to_s
  @hash.inspect
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.rb, line 365
def with_defaults(defaults)
  @hash = defaults.merge(@hash)
end

Protected Instance Methods

lookup(name) click to toggle source

# File lib/rake.rb, line 391
def lookup(name)
  if @hash.has_key?(name)
    @hash[name]
  elsif ENV.has_key?(name.to_s)
    ENV[name.to_s]
  elsif ENV.has_key?(name.to_s.upcase)
    ENV[name.to_s.upcase]
  elsif @parent
    @parent.lookup(name)
  end
end