Task: Resolve Type Names.

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 'package:analyzer/src/generated/ast.dart';
 import 'package:analyzer/src/generated/element.dart';
@@ skipping 97 matching lines @@
  * libraries exports one.
  *
  * Also [LibraryElement.exportNamespace] is set.
  *
  * The result is only available for targets representing a Dart library.
  */
 final ResultDescriptor<LibraryElement> LIBRARY_ELEMENT4 =
     new ResultDescriptor<LibraryElement>('LIBRARY_ELEMENT4', null);
 
 /**
+ * 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>>(
+        'RESOLVE_TYPE_NAMES_ERRORS', AnalysisError.NO_ERRORS,
+        contributesTo: DART_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 =
     new ResultDescriptor<CompilationUnit>('RESOLVED_UNIT1', null);
 
 /**
@@ skipping 30 matching lines @@
  * The partially resolved [CompilationUnit] associated with a unit.
  *
  * All the function type aliases are resolved.
  *
  * The result is only available for targets representing a unit.
  */
 final ResultDescriptor<CompilationUnit> RESOLVED_UNIT5 =
     new ResultDescriptor<CompilationUnit>('RESOLVED_UNIT5', null);
 
 /**
+ * The partially resolved [CompilationUnit] associated with a unit.
+ *
+ * [RESOLVED_UNIT5] with resolved type names.
+ *
+ * The result is only available for targets representing a unit.
+ */
+final ResultDescriptor<CompilationUnit> RESOLVED_UNIT6 =
+    new ResultDescriptor<CompilationUnit>('RESOLVED_UNIT6', null);
+
+/**
  * The [TypeProvider] of the context.
  */
 final ResultDescriptor<TypeProvider> TYPE_PROVIDER =
     new ResultDescriptor<TypeProvider>('TYPE_PROVIDER', null);
 
 /**
  * A task that builds a compilation unit element for a single compilation unit.
  */
 class BuildCompilationUnitElementTask extends SourceBasedAnalysisTask {
   /**
@@ skipping 516 matching lines @@
       Set<LibraryElement> libraries, LibraryElement library) {
     if (library != null && libraries.add(library)) {
       for (ExportElement exportElement in library.exports) {
         _buildExportClosure(libraries, exportElement.exportedLibrary);
       }
     }
   }
 }
 
 /**
- * A task that builds [RESOLVED_UNIT5] for a library.
+ * A task that builds [RESOLVED_UNIT5] for a unit.
  */
 class BuildFunctionTypeAliasesTask extends SourceBasedAnalysisTask {
   /**
    * The name of the [TYPE_PROVIDER] input.
    */
   static const String TYPE_PROVIDER_INPUT = 'TYPE_PROVIDER_INPUT';
 
   /**
    * The name of the [RESOLVED_UNIT3] input.
    */
@@ skipping 778 matching lines @@
   void _addPublicNames(CompilationUnitElement compilationUnit) {
     compilationUnit.accessors.forEach(_addIfPublic);
     compilationUnit.enums.forEach(_addIfPublic);
     compilationUnit.functions.forEach(_addIfPublic);
     compilationUnit.functionTypeAliases.forEach(_addIfPublic);
     compilationUnit.types.forEach(_addIfPublic);
   }
 }
 
 /**
+ * A task that builds [RESOLVED_UNIT6] for a unit.
+ */
+class ResolveTypeNamesTask extends SourceBasedAnalysisTask {
+  /**
+   * The name of the [RESOLVED_UNIT5] input.
+   */
+  static const String UNIT_INPUT = 'UNIT_INPUT';
+
+  /**
+   * The task descriptor describing this kind of task.
+   */
+  static final TaskDescriptor DESCRIPTOR = new TaskDescriptor(
+      'ResolveTypeNamesTask', createTask, buildInputs, <ResultDescriptor>[
+    RESOLVE_TYPE_NAMES_ERRORS,
+    RESOLVED_UNIT6
+  ]);
+
+  ResolveTypeNamesTask(InternalAnalysisContext context, AnalysisTarget target)
+      : super(context, target);
+
+  @override
+  TaskDescriptor get descriptor => DESCRIPTOR;
+
+  @override
+  void internalPerform() {
+    RecordingErrorListener errorListener = new RecordingErrorListener();
+    //
+    // Prepare inputs.
+    //
+    CompilationUnit unit = getRequiredInput(UNIT_INPUT);
+    CompilationUnitElement unitElement = unit.element;
+    //
+    // Resolve TypeName nodes.
+    //
+    TypeResolverVisitor visitor = new TypeResolverVisitor.con2(
+        unitElement.library, unitElement.source, context.typeProvider,
+        errorListener);
+    unit.accept(visitor);
+    //
+    // Record outputs.
+    //
+    outputs[RESOLVE_TYPE_NAMES_ERRORS] = errorListener.errors;
+    outputs[RESOLVED_UNIT6] = unit;
+  }
+
+  /**
+   * Return a map from the names of the inputs of this kind of task to the task
+   * input descriptors describing those inputs for a task with the
+   * given [target].
+   */
+  static Map<String, TaskInput> buildInputs(LibraryUnitTarget target) {
+    return <String, TaskInput>{UNIT_INPUT: RESOLVED_UNIT5.inputFor(target)};
+  }
+
+  /**
+   * Create a [ResolveTypeNamesTask] based on the given [target] in
+   * the given [context].
+   */
+  static ResolveTypeNamesTask createTask(
+      AnalysisContext context, AnalysisTarget target) {
+    return new ResolveTypeNamesTask(context, target);
+  }
+}
+
+/**
  * A task that scans the content of a file, producing a set of Dart tokens.
  */
 class ScanDartTask extends SourceBasedAnalysisTask {
   /**
    * The name of the input whose value is the content of the file.
    */
   static const String CONTENT_INPUT_NAME = 'CONTENT_INPUT_NAME';
 
   /**
    * The task descriptor describing this kind of task.
@@ skipping 39 matching lines @@
   }
 
   /**
    * Create a [ScanDartTask] based on the given [target] in the given [context].
    */
   static ScanDartTask createTask(
       AnalysisContext context, AnalysisTarget target) {
     return new ScanDartTask(context, target);
   }
 }