1 files changed, 85 insertions, 0 deletions
diff --git a/cordova/node_modules/cordova-common/src/ActionStack.js b/cordova/node_modules/cordova-common/src/ActionStack.js
new file mode 100755
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+++ b/cordova/node_modules/cordova-common/src/ActionStack.js
@@ -0,0 +1,85 @@
+/**
+    Licensed to the Apache Software Foundation (ASF) under one
+    or more contributor license agreements.  See the NOTICE file
+    distributed with this work for additional information
+    regarding copyright ownership.  The ASF licenses this file
+    to you under the Apache License, Version 2.0 (the
+    "License"); you may not use this file except in compliance
+    with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing,
+    software distributed under the License is distributed on an
+    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+    KIND, either express or implied.  See the License for the
+    specific language governing permissions and limitations
+    under the License.
+*/
+
+/* jshint quotmark:false */
+
+var events = require('./events');
+var Q = require('q');
+
+function ActionStack () {
+    this.stack = [];
+    this.completed = [];
+}
+
+ActionStack.prototype = {
+    createAction: function (handler, action_params, reverter, revert_params) {
+        return {
+            handler: {
+                run: handler,
+                params: action_params
+            },
+            reverter: {
+                run: reverter,
+                params: revert_params
+            }
+        };
+    },
+    push: function (tx) {
+        this.stack.push(tx);
+    },
+    // Returns a promise.
+    process: function (platform) {
+        events.emit('verbose', 'Beginning processing of action stack for ' + platform + ' project...');
+
+        while (this.stack.length) {
+            var action = this.stack.shift();
+            var handler = action.handler.run;
+            var action_params = action.handler.params;
+
+            try {
+                handler.apply(null, action_params);
+            } catch (e) {
+                events.emit('warn', 'Error during processing of action! Attempting to revert...');
+                this.stack.unshift(action);
+                var issue = 'Uh oh!\n';
+                // revert completed tasks
+                while (this.completed.length) {
+                    var undo = this.completed.shift();
+                    var revert = undo.reverter.run;
+                    var revert_params = undo.reverter.params;
+
+                    try {
+                        revert.apply(null, revert_params);
+                    } catch (err) {
+                        events.emit('warn', 'Error during reversion of action! We probably really messed up your project now, sorry! D:');
+                        issue += 'A reversion action failed: ' + err.message + '\n';
+                    }
+                }
+                e.message = issue + e.message;
+                return Q.reject(e);
+            }
+            this.completed.push(action);
+        }
+        events.emit('verbose', 'Action stack processing complete.');
+
+        return Q();
+    }
+};
+
+module.exports = ActionStack;