Clean-up result descriptors

pkg/analyzer/lib/src/task/dart.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // 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 analyzer.src.task.dart;
 
 import 'dart:collection';
 import 'dart:math' as math;
 
 import 'package:analyzer/src/generated/ast.dart';
@@ skipping 20 matching lines @@
 const ResultCachingPolicy AST_CACHING_POLICY =
     const SimpleResultCachingPolicy(256, 64);
 
 /**
  * The errors produced while resolving a library directives.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart library.
  */
-final ResultDescriptor<List<AnalysisError>> BUILD_DIRECTIVES_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> BUILD_DIRECTIVES_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'BUILD_DIRECTIVES_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The errors produced while building function type aliases.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart library.
  */
-final ResultDescriptor<List<AnalysisError>> BUILD_FUNCTION_TYPE_ALIASES_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> BUILD_FUNCTION_TYPE_ALIASES_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'BUILD_FUNCTION_TYPE_ALIASES_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The errors produced while building a library element.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart library.
  */
-final ResultDescriptor<List<AnalysisError>> BUILD_LIBRARY_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> BUILD_LIBRARY_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'BUILD_LIBRARY_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The [ClassElement]s of a [LibrarySpecificUnit].
  */
 final ListResultDescriptor<ClassElement> CLASS_ELEMENTS =
     new ListResultDescriptor<ClassElement>('CLASS_ELEMENTS', null,
         cachingPolicy: ELEMENT_CACHING_POLICY);
 
 /**
  * The element model associated with a single compilation unit.
  *
  * The result is only available for targets representing a Dart compilation unit.
  */
 final ResultDescriptor<CompilationUnitElement> COMPILATION_UNIT_ELEMENT =
     new ResultDescriptor<CompilationUnitElement>(
         'COMPILATION_UNIT_ELEMENT', null,
         cachingPolicy: ELEMENT_CACHING_POLICY);
 
 /**
  * The [ConstructorElement]s of a [ClassElement].
  */
-final ResultDescriptor<List<ConstructorElement>> CONSTRUCTORS =
-    new ResultDescriptor<List<ConstructorElement>>('CONSTRUCTORS', null);
+final ListResultDescriptor<ConstructorElement> CONSTRUCTORS =
+    new ListResultDescriptor<ConstructorElement>('CONSTRUCTORS', null);
 
 /**
  * The errors produced while building a [ClassElement] constructors.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a [ClassElement].
  */
-final ResultDescriptor<List<AnalysisError>> CONSTRUCTORS_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> CONSTRUCTORS_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'CONSTRUCTORS_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The sources representing the libraries that include a given source as a part.
  *
  * The result is only available for targets representing a compilation unit.
  */
 final ListResultDescriptor<Source> CONTAINING_LIBRARIES =
     new ListResultDescriptor<Source>('CONTAINING_LIBRARIES', Source.EMPTY_LIST);
 
@@ skipping 12 matching lines @@
 final ListResultDescriptor<Source> EXPORT_SOURCE_CLOSURE =
     new ListResultDescriptor<Source>('EXPORT_SOURCE_CLOSURE', null);
 
 /**
  * The errors produced while generating hints a compilation unit.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart compilation unit.
  */
-final ResultDescriptor<List<AnalysisError>> HINTS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> HINTS =
+    new ListResultDescriptor<AnalysisError>(
         'HINT_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The sources representing the import closure of a library.
  * The [Source]s include only library sources, not their units.
  *
  * The result is only available for targets representing a Dart library.
  */
 final ListResultDescriptor<Source> IMPORT_SOURCE_CLOSURE =
     new ListResultDescriptor<Source>('IMPORT_SOURCE_CLOSURE', null);
@@ skipping 58 matching lines @@
 final ResultDescriptor<LibraryElement> LIBRARY_ELEMENT5 =
     new ResultDescriptor<LibraryElement>('LIBRARY_ELEMENT5', null,
         cachingPolicy: ELEMENT_CACHING_POLICY);
 
 /**
  * The analysis errors associated with a compilation unit in a specific library.
  *
  * The result is only available for targets representing a Dart compilation unit
  * in a specific library.
  */
-final ResultDescriptor<List<AnalysisError>> LIBRARY_UNIT_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> LIBRARY_UNIT_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'LIBRARY_UNIT_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The errors produced while parsing a compilation unit.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart compilation unit.
  */
-final ResultDescriptor<List<AnalysisError>> PARSE_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> PARSE_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'PARSE_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The errors produced while resolving references.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a unit.
  */
-final ResultDescriptor<List<AnalysisError>> RESOLVE_REFERENCES_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> RESOLVE_REFERENCES_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'RESOLVE_REFERENCES_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The errors produced while resolving type names.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart library.
  */
-final ResultDescriptor<List<AnalysisError>> RESOLVE_TYPE_NAMES_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> RESOLVE_TYPE_NAMES_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'RESOLVE_TYPE_NAMES_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The partially resolved [CompilationUnit] associated with a unit.
  *
  * All declarations bound to the element defined by the declaration.
  *
  * The result is only available for targets representing a unit.
  */
 final ResultDescriptor<CompilationUnit> RESOLVED_UNIT1 =
@@ skipping 44 matching lines @@
     new ResultDescriptor<CompilationUnit>('RESOLVED_UNIT5', null,
         cachingPolicy: AST_CACHING_POLICY);
 
 /**
  * The errors produced while scanning a compilation unit.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart compilation unit.
  */
-final ResultDescriptor<List<AnalysisError>> SCAN_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> SCAN_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'SCAN_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * The [ResultCachingPolicy] for [TOKEN_STREAM].
  */
 const ResultCachingPolicy TOKEN_STREAM_CACHING_POLICY =
     const SimpleResultCachingPolicy(1, 1);
 
 /**
  * The [TypeProvider] of the context.
@@ skipping 15 matching lines @@
     new ResultDescriptor<UsedLocalElements>('USED_LOCAL_ELEMENTS', null,
         cachingPolicy: ELEMENT_CACHING_POLICY);
 
 /**
  * The errors produced while verifying a compilation unit.
  *
  * The list will be empty if there were no errors, but will not be `null`.
  *
  * The result is only available for targets representing a Dart compilation unit.
  */
-final ResultDescriptor<List<AnalysisError>> VERIFY_ERRORS =
-    new ResultDescriptor<List<AnalysisError>>(
+final ListResultDescriptor<AnalysisError> VERIFY_ERRORS =
+    new ListResultDescriptor<AnalysisError>(
         'VERIFY_ERRORS', AnalysisError.NO_ERRORS);
 
 /**
  * A task that builds implicit constructors for a [ClassElement], or keeps
  * the existing explicit constructors if the class has them.
  */
 class BuildClassConstructorsTask extends SourceBasedAnalysisTask {
   /**
    * The name of the [CONSTRUCTORS] input for the superclass.
    */
@@ skipping 2623 matching lines @@
   @override
   bool moveNext() {
     if (_newSources.isEmpty) {
       return false;
     }
     currentTarget = _newSources.first;
     _newSources.remove(currentTarget);
     return true;
   }
 }