Add AnalysisContext.onResultComputed().

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

Index: pkg/analyzer/lib/src/task/dart.dart
diff --git a/pkg/analyzer/lib/src/task/dart.dart b/pkg/analyzer/lib/src/task/dart.dart
index 7d53e095d20250ee72a9a0503b4dab94970b4291..ffada05a97977277fb84a84c4a0490c9f3205664 100644
--- a/pkg/analyzer/lib/src/task/dart.dart
+++ b/pkg/analyzer/lib/src/task/dart.dart
@@ -369,16 +369,6 @@ final ResultDescriptor<CompilationUnit> RESOLVED_UNIT5 =
         cachingPolicy: AST_CACHING_POLICY);
 
 /**
- * The resolved [CompilationUnit] associated with a compilation unit, with
- * constants not yet resolved.
- *
- * The result is only available for [LibrarySpecificUnit]s.
- */
-final ResultDescriptor<CompilationUnit> RESOLVED_UNIT6 =
-    new ResultDescriptor<CompilationUnit>('RESOLVED_UNIT6', 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`.
@@ -1741,7 +1731,7 @@ class BuildTypeProviderTask extends SourceBasedAnalysisTask {
  */
 class ComputeConstantDependenciesTask extends ConstantEvaluationAnalysisTask {
   /**
-   * The name of the [RESOLVED_UNIT6] input.
+   * The name of the [RESOLVED_UNIT_NO_CONSTANTS] input.
    */
   static const String UNIT_INPUT = 'UNIT_INPUT';
 
@@ -1795,13 +1785,13 @@ class ComputeConstantDependenciesTask extends ConstantEvaluationAnalysisTask {
       CompilationUnitElementImpl unit = (target as Element)
           .getAncestor((Element element) => element is CompilationUnitElement);
       return <String, TaskInput>{
-        UNIT_INPUT: RESOLVED_UNIT6
+        UNIT_INPUT: RESOLVED_UNIT_NO_CONSTANTS
             .of(new LibrarySpecificUnit(unit.librarySource, target.source)),
         TYPE_PROVIDER_INPUT: TYPE_PROVIDER.of(AnalysisContextTarget.request)
       };
     } else if (target is ConstantEvaluationTarget_Annotation) {
       return <String, TaskInput>{
-        UNIT_INPUT: RESOLVED_UNIT6
+        UNIT_INPUT: RESOLVED_UNIT_NO_CONSTANTS
             .of(new LibrarySpecificUnit(target.librarySource, target.source)),
         TYPE_PROVIDER_INPUT: TYPE_PROVIDER.of(AnalysisContextTarget.request)
       };
@@ -2088,7 +2078,7 @@ class DartErrorsTask extends SourceBasedAnalysisTask {
  */
 class EvaluateUnitConstantsTask extends SourceBasedAnalysisTask {
   /**
-   * The name of the [RESOLVED_UNIT6] input.
+   * The name of the [RESOLVED_UNIT_NO_CONSTANTS] input.
    */
   static const String UNIT_INPUT = 'UNIT_INPUT';
 
@@ -2126,7 +2116,7 @@ class EvaluateUnitConstantsTask extends SourceBasedAnalysisTask {
   static Map<String, TaskInput> buildInputs(LibrarySpecificUnit target) {
     return <String, TaskInput>{
       'libraryElement': LIBRARY_ELEMENT.of(target.library),
-      UNIT_INPUT: RESOLVED_UNIT6.of(target),
+      UNIT_INPUT: RESOLVED_UNIT_NO_CONSTANTS.of(target),
       CONSTANT_VALUES:
           COMPILATION_UNIT_CONSTANTS.of(target).toListOf(CONSTANT_VALUE)
     };
@@ -2250,7 +2240,7 @@ class ExportNamespaceBuilder {
  */
 class GatherUsedImportedElementsTask extends SourceBasedAnalysisTask {
   /**
-   * The name of the [RESOLVED_UNIT6] input.
+   * The name of the [RESOLVED_UNIT_NO_CONSTANTS] input.
    */
   static const String UNIT_INPUT = 'UNIT_INPUT';
 
@@ -2291,7 +2281,9 @@ class GatherUsedImportedElementsTask extends SourceBasedAnalysisTask {
    * given [target].
    */
   static Map<String, TaskInput> buildInputs(LibrarySpecificUnit target) {
-    return <String, TaskInput>{UNIT_INPUT: RESOLVED_UNIT6.of(target)};
+    return <String, TaskInput>{
+      UNIT_INPUT: RESOLVED_UNIT_NO_CONSTANTS.of(target)
+    };
   }
 
   /**
@@ -2309,7 +2301,7 @@ class GatherUsedImportedElementsTask extends SourceBasedAnalysisTask {
  */
 class GatherUsedLocalElementsTask extends SourceBasedAnalysisTask {
   /**
-   * The name of the [RESOLVED_UNIT6] input.
+   * The name of the [RESOLVED_UNIT_NO_CONSTANTS] input.
    */
   static const String UNIT_INPUT = 'UNIT_INPUT';
 
@@ -2350,7 +2342,9 @@ class GatherUsedLocalElementsTask extends SourceBasedAnalysisTask {
    * given [target].
    */
   static Map<String, TaskInput> buildInputs(LibrarySpecificUnit target) {
-    return <String, TaskInput>{UNIT_INPUT: RESOLVED_UNIT6.of(target)};
+    return <String, TaskInput>{
+      UNIT_INPUT: RESOLVED_UNIT_NO_CONSTANTS.of(target)
+    };
   }
 
   /**
@@ -2368,7 +2362,7 @@ class GatherUsedLocalElementsTask extends SourceBasedAnalysisTask {
  */
 class GenerateHintsTask extends SourceBasedAnalysisTask {
   /**
-   * The name of the [RESOLVED_UNIT6] input.
+   * The name of the [RESOLVED_UNIT_NO_CONSTANTS] input.
    */
   static const String RESOLVED_UNIT_INPUT = 'RESOLVED_UNIT';
 
@@ -2873,7 +2867,7 @@ class PublicNamespaceBuilder {
 }
 
 /**
- * A task that finishes resolution by requesting [RESOLVED_UNIT6] for every
+ * A task that finishes resolution by requesting [RESOLVED_UNIT_NO_CONSTANTS] for every
  * unit in the libraries closure and produces [LIBRARY_ELEMENT].
  */
 class ResolveLibraryReferencesTask extends SourceBasedAnalysisTask {
@@ -2913,8 +2907,9 @@ class ResolveLibraryReferencesTask extends SourceBasedAnalysisTask {
       'resolvedUnits': IMPORT_EXPORT_SOURCE_CLOSURE
           .of(libSource)
           .toMapOf(UNITS)
-          .toFlattenList((Source library, Source unit) =>
-              RESOLVED_UNIT6.of(new LibrarySpecificUnit(library, unit))),
+          .toFlattenList(
+              (Source library, Source unit) => RESOLVED_UNIT_NO_CONSTANTS
+                  .of(new LibrarySpecificUnit(library, unit))),
     };
   }
 
@@ -2985,7 +2980,7 @@ class ResolveLibraryTypeNamesTask extends SourceBasedAnalysisTask {
 }
 
 /**
- * A task that builds [RESOLVED_UNIT6] for a unit.
+ * A task that builds [RESOLVED_UNIT_NO_CONSTANTS] for a unit.
  */
 class ResolveUnitReferencesTask extends SourceBasedAnalysisTask {
   /**
@@ -3009,7 +3004,7 @@ class ResolveUnitReferencesTask extends SourceBasedAnalysisTask {
   static final TaskDescriptor DESCRIPTOR = new TaskDescriptor(
       'ResolveUnitReferencesTask', createTask, buildInputs, <ResultDescriptor>[
     RESOLVE_REFERENCES_ERRORS,
-    RESOLVED_UNIT6
+    RESOLVED_UNIT_NO_CONSTANTS
   ]);
 
   ResolveUnitReferencesTask(
@@ -3042,7 +3037,7 @@ class ResolveUnitReferencesTask extends SourceBasedAnalysisTask {
     //
     outputs[RESOLVE_REFERENCES_ERRORS] =
         removeDuplicateErrors(errorListener.errors);
-    outputs[RESOLVED_UNIT6] = unit;
+    outputs[RESOLVED_UNIT_NO_CONSTANTS] = unit;
   }
 
   /**