forked from zhurui/management
47 lines
1019 B
JavaScript
47 lines
1019 B
JavaScript
|
/*jshint node:true */
|
||
|
|
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
var sequence = function (tasks, names, results, nest) {
|
||
|
|
var i, name, node, e, j;
|
||
|
|
nest = nest || [];
|
||
|
|
for (i = 0; i < names.length; i++) {
|
||
|
|
name = names[i];
|
||
|
|
// de-dup results
|
||
|
|
if (results.indexOf(name) === -1) {
|
||
|
|
node = tasks[name];
|
||
|
|
if (!node) {
|
||
|
|
e = new Error('task "'+name+'" is not defined');
|
||
|
|
e.missingTask = name;
|
||
|
|
e.taskList = [];
|
||
|
|
for (j in tasks) {
|
||
|
|
if (tasks.hasOwnProperty(j)) {
|
||
|
|
e.taskList.push(tasks[j].name);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
throw e;
|
||
|
|
}
|
||
|
|
if (nest.indexOf(name) > -1) {
|
||
|
|
nest.push(name);
|
||
|
|
e = new Error('Recursive dependencies detected: '+nest.join(' -> '));
|
||
|
|
e.recursiveTasks = nest;
|
||
|
|
e.taskList = [];
|
||
|
|
for (j in tasks) {
|
||
|
|
if (tasks.hasOwnProperty(j)) {
|
||
|
|
e.taskList.push(tasks[j].name);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
throw e;
|
||
|
|
}
|
||
|
|
if (node.dep.length) {
|
||
|
|
nest.push(name);
|
||
|
|
sequence(tasks, node.dep, results, nest); // recurse
|
||
|
|
nest.pop(name);
|
||
|
|
}
|
||
|
|
results.push(name);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
};
|
||
|
|
|
||
|
|
module.exports = sequence;
|