The TaskManager module is a mixin for managing tasks.
- []
- clear
- create_rule
- current_scope
- define_task
- enhance_with_matching_rule
- in_namespace
- intern
- lookup
- new
- resolve_args
- synthesize_file_task
- tasks
[RW] | last_comment | Track the last comment made in the Rakefile. |
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# File lib/rake.rb, line 1249 1249: def initialize 1250: super 1251: @tasks = Hash.new 1252: @rules = Array.new 1253: @scope = Array.new 1254: @last_comment = nil 1255: end
Find a matching task for task_name.
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# File lib/rake.rb, line 1283 1283: def [](task_name, scopes=nil) 1284: task_name = task_name.to_s 1285: self.lookup(task_name, scopes) or 1286: enhance_with_matching_rule(task_name) or 1287: synthesize_file_task(task_name) or 1288: fail "Don't know how to build task '#{task_name}'" 1289: end
Clear all tasks in this application.
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# File lib/rake.rb, line 1337 1337: def clear 1338: @tasks.clear 1339: @rules.clear 1340: end
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# File lib/rake.rb, line 1257 1257: def create_rule(args, &block) 1258: pattern, deps = resolve_args(args) 1259: pattern = Regexp.new(Regexp.quote(pattern) + '$') if String === pattern 1260: @rules << [pattern, deps, block] 1261: end
Return the list of scope names currently active in the task manager.
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# File lib/rake.rb, line 1377 1377: def current_scope 1378: @scope.dup 1379: end
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# File lib/rake.rb, line 1263 1263: def define_task(task_class, args, &block) 1264: task_name, deps = resolve_args(args) 1265: task_name = task_class.scope_name(@scope, task_name) 1266: deps = [deps] unless deps.respond_to?(:to_ary) 1267: deps = deps.collect {|d| d.to_s } 1268: task = intern(task_class, task_name) 1269: task.application = self 1270: task.add_comment(@last_comment) 1271: @last_comment = nil 1272: task.enhance(deps, &block) 1273: task 1274: 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.
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# File lib/rake.rb, line 1316 1316: def enhance_with_matching_rule(task_name, level=0) 1317: fail Rake::RuleRecursionOverflowError, 1318: "Rule Recursion Too Deep" if level >= 16 1319: @rules.each do |pattern, extensions, block| 1320: if md = pattern.match(task_name) 1321: task = attempt_rule(task_name, extensions, block, level) 1322: return task if task 1323: end 1324: end 1325: nil 1326: rescue Rake::RuleRecursionOverflowError => ex 1327: ex.add_target(task_name) 1328: fail ex 1329: end
Evaluate the block in a nested namespace named name. Create an anonymous namespace if name is nil.
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# File lib/rake.rb, line 1383 1383: def in_namespace(name) 1384: name ||= generate_name 1385: @scope.push(name) 1386: ns = NameSpace.new(self, @scope) 1387: yield(ns) 1388: ns 1389: ensure 1390: @scope.pop 1391: end
Lookup a task. Return an existing task if found, otherwise create a task of the current type.
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# File lib/rake.rb, line 1278 1278: def intern(task_class, task_name) 1279: @tasks[task_name.to_s] ||= task_class.new(task_name, self) 1280: 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.
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# File lib/rake.rb, line 1347 1347: def lookup(task_name, initial_scope=nil) 1348: initial_scope ||= @scope 1349: task_name = task_name.to_s 1350: if task_name =~ /^rake:/ 1351: scopes = [] 1352: task_name = task_name.sub(/^rake:/, '') 1353: elsif task_name =~ /^(\^^+)/ 1354: scopes = initial_scope[0, initial_scope.size - $1.size] 1355: task_name = task_name.sub(/^(\^^+)/, '') 1356: else 1357: scopes = initial_scope 1358: end 1359: lookup_in_scope(task_name, scopes) 1360: end
Resolve the arguments for a task/rule.
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# File lib/rake.rb, line 1297 1297: def resolve_args(args) 1298: case args 1299: when Hash 1300: fail "Too Many Task Names: #{args.keys.join(' ')}" if args.size > 1 1301: fail "No Task Name Given" if args.size < 1 1302: task_name = args.keys[0] 1303: deps = args[task_name] 1304: deps = [deps] if (String===deps) || (Regexp===deps) || (Proc===deps) 1305: else 1306: task_name = args 1307: deps = [] 1308: end 1309: [task_name, deps] 1310: end
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# File lib/rake.rb, line 1291 1291: def synthesize_file_task(task_name) 1292: return nil unless File.exist?(task_name) 1293: define_task(Rake::FileTask, task_name) 1294: end
List of all defined tasks in this application.
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# File lib/rake.rb, line 1332 1332: def tasks 1333: @tasks.values.sort_by { |t| t.name } 1334: end