Revert "Update all Angular libs (run update_all.sh)."

third_party/pkg/angular/lib/change_detection/ast.dart

 part of angular.watch_group;
 
 
 /**
  * RULES:
  *  - ASTs are reusable. Don't store scope/instance refs there
  *  - Parent knows about children, not the other way around.
  */
 abstract class AST {
   static final String _CONTEXT = '#';
@@ skipping 61 matching lines @@
  *
  * Invoke a pure function. Pure means that the function has no state, and
  * therefore it needs to be re-computed only if its args change.
  */
 class PureFunctionAST extends AST {
   final String name;
   final /* dartbug.com/16401 Function */ fn;
   final List<AST> argsAST;
 
   PureFunctionAST(name, this.fn, argsAST)
-      : argsAST = argsAST,
-        name = name,
-        super('$name(${_argList(argsAST)})');
+      : super('$name(${_argList(argsAST)})'),
+        argsAST = argsAST,
+        name = name;
 
   WatchRecord<_Handler> setupWatch(WatchGroup watchGroup) =>
-      watchGroup.addFunctionWatch(fn, argsAST, const {}, expression, true);
+      watchGroup.addFunctionWatch(fn, argsAST, expression);
 }
 
 /**
- * SYNTAX: fn(arg0, arg1, ...)
- *
- * Invoke a pure function. Pure means that the function has no state, and
- * therefore it needs to be re-computed only if its args change.
- */
-class ClosureAST extends AST {
-  final String name;
-  final /* dartbug.com/16401 Function */ fn;
-  final List<AST> argsAST;
-
-  ClosureAST(name, this.fn, argsAST)
-      : argsAST = argsAST,
-        name = name,
-        super('$name(${_argList(argsAST)})');
-
-  WatchRecord<_Handler> setupWatch(WatchGroup watchGroup) =>
-      watchGroup.addFunctionWatch(fn, argsAST, const {}, expression, false);
-}
-
-/**
  * SYNTAX: lhs.method(arg0, arg1, ...)
  *
  * Invoke a method on [lhs] object.
  */
 class MethodAST extends AST {
   final AST lhsAST;
   final String name;
   final List<AST> argsAST;
-  final Map<Symbol, AST> namedArgsAST;
 
-  MethodAST(lhsAST, name, argsAST, [this.namedArgsAST = const {}])
-      : lhsAST = lhsAST,
+  MethodAST(lhsAST, name, argsAST)
+      : super('$lhsAST.$name(${_argList(argsAST)})'),
+        lhsAST = lhsAST,
         name = name,
-        argsAST = argsAST,
-        super('$lhsAST.$name(${_argList(argsAST)})');
+        argsAST = argsAST;
 
   WatchRecord<_Handler> setupWatch(WatchGroup watchGroup) =>
-      watchGroup.addMethodWatch(lhsAST, name, argsAST, namedArgsAST, expression);
+      watchGroup.addMethodWatch(lhsAST, name, argsAST, expression);
 }
 
 
 class CollectionAST extends AST {
   final AST valueAST;
   CollectionAST(valueAST)
       : valueAST = valueAST,
         super('#collection($valueAST)');
 
   WatchRecord<_Handler> setupWatch(WatchGroup watchGroup) =>
       watchGroup.addCollectionWatch(valueAST);
 }
 
 String _argList(List<AST> items) => items.join(', ');
 
 /**
  * The name is a bit oxymoron, but it is essentially the NullObject pattern.
  *
- * This allows children to set a handler on this Record and then let it write
- * the initial constant value to the forwarding Record.
+ * This allows children to set a handler on this ChangeRecord and then let it write the initial
+ * constant value to the forwarding ChangeRecord.
  */
 class _ConstantWatchRecord extends WatchRecord<_Handler> {
   final currentValue;
   final _Handler handler;
 
   _ConstantWatchRecord(WatchGroup watchGroup, String expression, currentValue)
       : currentValue = currentValue,
         handler = new _ConstantHandler(watchGroup, expression, currentValue);
 
-  bool check() => false;
+  ChangeRecord<_Handler> check() => null;
   void remove() => null;
 
   get field => null;
   get previousValue => null;
   get object => null;
   set object(_) => null;
   get nextChange => null;
 }