Module | Rake::TaskManager |
In: |
lib/rake.rb
|
The TaskManager module is a mixin for managing tasks.
last_description | -> | last_comment |
last_description | [RW] | Track the last comment made in the Rakefile. |
# File lib/rake.rb, line 1666 1666: def initialize 1667: super 1668: @tasks = Hash.new 1669: @rules = Array.new 1670: @scope = Array.new 1671: @last_description = nil 1672: end
Find a matching task for task_name.
# File lib/rake.rb, line 1700 1700: def [](task_name, scopes=nil) 1701: task_name = task_name.to_s 1702: self.lookup(task_name, scopes) or 1703: enhance_with_matching_rule(task_name) or 1704: synthesize_file_task(task_name) or 1705: fail "Don't know how to build task '#{task_name}'" 1706: end
# File lib/rake.rb, line 1674 1674: def create_rule(*args, &block) 1675: pattern, arg_names, deps = resolve_args(args) 1676: pattern = Regexp.new(Regexp.quote(pattern) + '$') if String === pattern 1677: @rules << [pattern, deps, block] 1678: end
Return the list of scope names currently active in the task manager.
# File lib/rake.rb, line 1849 1849: def current_scope 1850: @scope.dup 1851: end
# File lib/rake.rb, line 1680 1680: def define_task(task_class, *args, &block) 1681: task_name, arg_names, deps = resolve_args(args) 1682: task_name = task_class.scope_name(@scope, task_name) 1683: deps = [deps] unless deps.respond_to?(:to_ary) 1684: deps = deps.collect {|d| d.to_s } 1685: task = intern(task_class, task_name) 1686: task.set_arg_names(arg_names) unless arg_names.empty? 1687: task.add_description(@last_description) 1688: @last_description = nil 1689: task.enhance(deps, &block) 1690: task 1691: end
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 1779 1779: def enhance_with_matching_rule(task_name, level=0) 1780: fail Rake::RuleRecursionOverflowError, 1781: "Rule Recursion Too Deep" if level >= 16 1782: @rules.each do |pattern, extensions, block| 1783: if md = pattern.match(task_name) 1784: task = attempt_rule(task_name, extensions, block, level) 1785: return task if task 1786: end 1787: end 1788: nil 1789: rescue Rake::RuleRecursionOverflowError => ex 1790: ex.add_target(task_name) 1791: fail ex 1792: end
Evaluate the block in a nested namespace named name. Create an anonymous namespace if name is nil.
# File lib/rake.rb, line 1855 1855: def in_namespace(name) 1856: name ||= generate_name 1857: @scope.push(name) 1858: ns = NameSpace.new(self, @scope) 1859: yield(ns) 1860: ns 1861: ensure 1862: @scope.pop 1863: end
Lookup a task. Return an existing task if found, otherwise create a task of the current type.
# File lib/rake.rb, line 1695 1695: def intern(task_class, task_name) 1696: @tasks[task_name.to_s] ||= task_class.new(task_name, self) 1697: end
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 1819 1819: def lookup(task_name, initial_scope=nil) 1820: initial_scope ||= @scope 1821: task_name = task_name.to_s 1822: if task_name =~ /^rake:/ 1823: scopes = [] 1824: task_name = task_name.sub(/^rake:/, '') 1825: elsif task_name =~ /^(\^+)/ 1826: scopes = initial_scope[0, initial_scope.size - $1.size] 1827: task_name = task_name.sub(/^(\^+)/, '') 1828: else 1829: scopes = initial_scope 1830: end 1831: lookup_in_scope(task_name, scopes) 1832: end
Resolve the arguments for a task/rule. Returns a triplet of [task_name, arg_name_list, prerequisites].
# File lib/rake.rb, line 1715 1715: def resolve_args(args) 1716: if args.last.is_a?(Hash) 1717: deps = args.pop 1718: resolve_args_with_dependencies(args, deps) 1719: else 1720: resolve_args_without_dependencies(args) 1721: end 1722: end
# File lib/rake.rb, line 1708 1708: def synthesize_file_task(task_name) 1709: return nil unless File.exist?(task_name) 1710: define_task(Rake::FileTask, task_name) 1711: end