Run pub tests against older versions of barback.

third_party/pkg/barback-0.13.0/lib/src/asset_node.dart

Index: third_party/pkg/barback-0.13.0/lib/src/asset_node.dart
diff --git a/pkg/barback/lib/src/asset/asset_node.dart b/third_party/pkg/barback-0.13.0/lib/src/asset_node.dart
similarity index 88%
copy from pkg/barback/lib/src/asset/asset_node.dart
copy to third_party/pkg/barback-0.13.0/lib/src/asset_node.dart
index 45d1b1771c215f165a2e3c001afb4a7ee5715e00..5e794431a6d283f9f74cad9db38edf3e2b0fa174 100644
--- a/pkg/barback/lib/src/asset/asset_node.dart
+++ b/third_party/pkg/barback-0.13.0/lib/src/asset_node.dart
@@ -2,15 +2,15 @@
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-library barback.asset.asset_node;
+library barback.asset_node;
 
 import 'dart:async';
 
-import '../errors.dart';
-import '../graph/transform_node.dart';
-import '../utils.dart';
 import 'asset.dart';
 import 'asset_id.dart';
+import 'errors.dart';
+import 'transform_node.dart';
+import 'utils.dart';
 
 /// Describes the current state of an asset as part of a transformation graph.
 ///
@@ -58,11 +58,6 @@ class AssetNode {
   /// lazy.
   Function _lazyCallback;
 
-  /// Whether this node is lazy, meaning that [force] must be called to
-  /// guarantee that it will eventually become available.
-  bool get isLazy => _lazyCallback != null ||
-      (_origin != null && _origin.isLazy);
-
   /// A broadcast stream that emits an event whenever the node changes state.
   ///
   /// This stream is synchronous to ensure that when a source asset is modified
@@ -122,7 +117,7 @@ class AssetNode {
   }
 
   AssetNode._(this.id, this._transform, this._origin)
-      : _state = AssetState.RUNNING;
+      : _state = AssetState.DIRTY;
 
   AssetNode._available(Asset asset, this._transform, this._origin)
       : id = asset.id,
@@ -130,7 +125,7 @@ class AssetNode {
         _state = AssetState.AVAILABLE;
 
   AssetNode._lazy(this.id, this._transform, this._origin, this._lazyCallback)
-      : _state = AssetState.RUNNING;
+      : _state = AssetState.DIRTY;
 
   /// If [this] is lazy, force it to generate a concrete asset; otherwise, do
   /// nothing.
@@ -145,7 +140,8 @@ class AssetNode {
     }
   }
 
-  String toString() => "${isLazy ? 'lazy' : state} asset $id";
+  String toString() =>
+    "$state${_lazyCallback == null ? '' : ' lazy'} asset $id";
 }
 
 /// The controller for an [AssetNode].
@@ -192,18 +188,13 @@ class AssetNodeController {
     }
   }
 
-  /// Marks the node as [AssetState.RUNNING].
+  /// Marks the node as [AssetState.DIRTY].
   void setDirty() {
     assert(node._state != AssetState.REMOVED);
+    node._state = AssetState.DIRTY;
     node._asset = null;
     node._lazyCallback = null;
-
-    // Don't re-emit a dirty event to avoid cases where we try to dispatch an
-    // event while handling another event (e.g. an output is marked lazy, which
-    // causes it to be forced, which causes it to be marked dirty).
-    if (node._state.isDirty) return;
-    node._state = AssetState.RUNNING;
-    node._stateChangeController.add(AssetState.RUNNING);
+    node._stateChangeController.add(AssetState.DIRTY);
   }
 
   /// Marks the node as [AssetState.REMOVED].
@@ -232,7 +223,7 @@ class AssetNodeController {
     node._stateChangeController.add(AssetState.AVAILABLE);
   }
 
-  /// Marks the node as [AssetState.RUNNING] and lazy.
+  /// Marks the node as [AssetState.DIRTY] and lazy.
   ///
   /// Lazy nodes aren't expected to have their values generated until needed.
   /// Once it's necessary, [callback] will be called. [callback] is guaranteed
@@ -241,10 +232,10 @@ class AssetNodeController {
   /// See also [AssetNodeController.lazy].
   void setLazy(void callback()) {
     assert(node._state != AssetState.REMOVED);
-    node._state = AssetState.RUNNING;
+    node._state = AssetState.DIRTY;
     node._asset = null;
     node._lazyCallback = callback;
-    node._stateChangeController.add(AssetState.RUNNING);
+    node._stateChangeController.add(AssetState.DIRTY);
   }
 
   String toString() => "controller for $node";
@@ -255,7 +246,7 @@ class AssetNodeController {
 class AssetState {
   /// The node has a concrete asset loaded, available, and up-to-date. The asset
   /// is accessible via [AssetNode.asset]. An asset can only be marked available
-  /// again from the [AssetState.RUNNING] state.
+  /// again from the [AssetState.DIRTY] state.
   static final AVAILABLE = const AssetState._("available");
 
   /// The asset is no longer available, possibly for good. A removed asset will
@@ -264,7 +255,7 @@ class AssetState {
 
   /// The asset will exist in the future (unless it's removed), but the concrete
   /// asset is not yet available.
-  static final RUNNING = const AssetState._("dirty");
+  static final DIRTY = const AssetState._("dirty");
 
   /// Whether this state is [AssetState.AVAILABLE].
   bool get isAvailable => this == AssetState.AVAILABLE;
@@ -272,8 +263,8 @@ class AssetState {
   /// Whether this state is [AssetState.REMOVED].
   bool get isRemoved => this == AssetState.REMOVED;
 
-  /// Whether this state is [AssetState.RUNNING].
-  bool get isDirty => this == AssetState.RUNNING;
+  /// Whether this state is [AssetState.DIRTY].
+  bool get isDirty => this == AssetState.DIRTY;
 
   final String name;