The TaskManager module is a mixin for managing tasks.

Methods
Attributes
[RW] last_description Track the last comment made in the Rakefile.
Public Class methods
new()
      # File lib/rake.rb, line 1668
1668:     def initialize
1669:       super
1670:       @tasks = Hash.new
1671:       @rules = Array.new
1672:       @scope = Array.new
1673:       @last_description = nil
1674:     end
Public Instance methods
[](task_name, scopes=nil)

Find a matching task for task_name.

      # File lib/rake.rb, line 1702
1702:     def [](task_name, scopes=nil)
1703:       task_name = task_name.to_s
1704:       self.lookup(task_name, scopes) or
1705:         enhance_with_matching_rule(task_name) or
1706:         synthesize_file_task(task_name) or
1707:         fail "Don't know how to build task '#{task_name}'"
1708:     end
clear()

Clear all tasks in this application.

      # File lib/rake.rb, line 1802
1802:     def clear
1803:       @tasks.clear
1804:       @rules.clear
1805:     end
create_rule(*args, &block)
      # File lib/rake.rb, line 1676
1676:     def create_rule(*args, &block)
1677:       pattern, arg_names, deps = resolve_args(args)
1678:       pattern = Regexp.new(Regexp.quote(pattern) + '$') if String === pattern
1679:       @rules << [pattern, deps, block]
1680:     end
current_scope()

Return the list of scope names currently active in the task manager.

      # File lib/rake.rb, line 1842
1842:     def current_scope
1843:       @scope.dup
1844:     end
define_task(task_class, *args, &block)
      # File lib/rake.rb, line 1682
1682:     def define_task(task_class, *args, &block)
1683:       task_name, arg_names, deps = resolve_args(args)
1684:       task_name = task_class.scope_name(@scope, task_name)
1685:       deps = [deps] unless deps.respond_to?(:to_ary)
1686:       deps = deps.collect {|d| d.to_s }
1687:       task = intern(task_class, task_name)
1688:       task.set_arg_names(arg_names) unless arg_names.empty?
1689:       task.add_description(@last_description)
1690:       @last_description = nil
1691:       task.enhance(deps, &block)
1692:       task
1693:     end
enhance_with_matching_rule(task_name, level=0)

If a rule can be found that matches the task name, enhance the task with the prerequisites and actions from the rule. Set the source attribute of the task appropriately for the rule. Return the enhanced task or nil of no rule was found.

      # File lib/rake.rb, line 1781
1781:     def enhance_with_matching_rule(task_name, level=0)
1782:       fail Rake::RuleRecursionOverflowError,
1783:         "Rule Recursion Too Deep" if level >= 16
1784:       @rules.each do |pattern, extensions, block|
1785:         if md = pattern.match(task_name)
1786:           task = attempt_rule(task_name, extensions, block, level)
1787:           return task if task
1788:         end
1789:       end
1790:       nil
1791:     rescue Rake::RuleRecursionOverflowError => ex
1792:       ex.add_target(task_name)
1793:       fail ex
1794:     end
in_namespace(name) {|ns| ...}

Evaluate the block in a nested namespace named name. Create an anonymous namespace if name is nil.

      # File lib/rake.rb, line 1848
1848:     def in_namespace(name)
1849:       name ||= generate_name
1850:       @scope.push(name)
1851:       ns = NameSpace.new(self, @scope)
1852:       yield(ns)
1853:       ns
1854:     ensure
1855:       @scope.pop
1856:     end
intern(task_class, task_name)

Lookup a task. Return an existing task if found, otherwise create a task of the current type.

      # File lib/rake.rb, line 1697
1697:     def intern(task_class, task_name)
1698:       @tasks[task_name.to_s] ||= task_class.new(task_name, self)
1699:     end
lookup(task_name, initial_scope=nil)

Lookup a task, using scope and the scope hints in the task name. This method performs straight lookups without trying to synthesize file tasks or rules. Special scope names (e.g. ’^’) are recognized. If no scope argument is supplied, use the current scope. Return nil if the task cannot be found.

      # File lib/rake.rb, line 1812
1812:     def lookup(task_name, initial_scope=nil)
1813:       initial_scope ||= @scope
1814:       task_name = task_name.to_s
1815:       if task_name =~ /^rake:/
1816:         scopes = []
1817:         task_name = task_name.sub(/^rake:/, '')
1818:       elsif task_name =~ /^(\^+)/
1819:         scopes = initial_scope[0, initial_scope.size - $1.size]
1820:         task_name = task_name.sub(/^(\^+)/, '')
1821:       else
1822:         scopes = initial_scope
1823:       end
1824:       lookup_in_scope(task_name, scopes)
1825:     end
resolve_args(args)

Resolve the arguments for a task/rule. Returns a triplet of [task_name, arg_name_list, prerequisites].

      # File lib/rake.rb, line 1717
1717:     def resolve_args(args)
1718:       if args.last.is_a?(Hash)
1719:         deps = args.pop
1720:         resolve_args_with_dependencies(args, deps)
1721:       else
1722:         resolve_args_without_dependencies(args)
1723:       end
1724:     end
synthesize_file_task(task_name)
      # File lib/rake.rb, line 1710
1710:     def synthesize_file_task(task_name)
1711:       return nil unless File.exist?(task_name)
1712:       define_task(Rake::FileTask, task_name)
1713:     end
tasks()

List of all defined tasks in this application.

      # File lib/rake.rb, line 1797
1797:     def tasks
1798:       @tasks.values.sort_by { |t| t.name }
1799:     end