Initial task support

pkg/analyzer/lib/task/dart.dart

Index: pkg/analyzer/lib/task/dart.dart
diff --git a/pkg/analyzer/lib/task/dart.dart b/pkg/analyzer/lib/task/dart.dart
new file mode 100644
index 0000000000000000000000000000000000000000..8d783ad0da51d0686e7d32212d3632e94c392599
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@@ -0,0 +1,90 @@
+// 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.task.dart;
+
+import 'package:analyzer/src/generated/ast.dart';
+import 'package:analyzer/src/generated/error.dart';
+import 'package:analyzer/src/generated/scanner.dart';
+import 'package:analyzer/src/generated/source.dart';
+import 'package:analyzer/task/general.dart';
+import 'package:analyzer/task/model.dart';
+
+/**
+ * The sources of the libraries that are exported from a library.
+ *
+ * The list will be empty if there are no exported libraries, but will not be
+ * `null`.
+ *
+ * The result is only available for targets representing a Dart library.
+ */
+final ResultDescriptor<List<Source>> EXPORTED_LIBRARIES =
+    new ResultDescriptor<List<Source>>('EXPORTED_LIBRARIES');
+
+/**
+ * The sources of the libraries that are imported into a library.
+ *
+ * The list will be empty if there are no imported libraries, but will not be
+ * `null`.
+ *
+ * The result is only available for targets representing a Dart library.
+ */
+final ResultDescriptor<List<Source>> IMPORTED_LIBRARIES =
+    new ResultDescriptor<List<Source>>('IMPORTED_LIBRARIES');
+
+/**
+ * The sources of the parts that are included in a library.
+ *
+ * The list will be empty if there are no parts, but will not be `null`. The
+ * list does *not* include the source for the defining compilation unit.
+ *
+ * The result is only available for targets representing a Dart library.
+ */
+final ResultDescriptor<List<Source>> INCLUDED_PARTS =
+    new ResultDescriptor<List<Source>>('INCLUDED_PARTS');
+
+/**
+ * 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>>(
+        'PARSE_ERRORS',
+        contributesTo: ANALYSIS_ERRORS);
+
+/**
+ * The compilation unit AST produced while parsing a compilation unit.
+ *
+ * The AST structure will not have resolution information associated with it.
+ *
+ * The result is only available for targets representing a Dart compilation unit.
+ */
+final ResultDescriptor<CompilationUnit> PARSED_UNIT =
+    new ResultDescriptor<CompilationUnit>('PARSED_UNIT');
+
+/**
+ * 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>>(
+        'SCAN_ERRORS',
+        contributesTo: ANALYSIS_ERRORS);
+
+/**
+ * The token stream produced while scanning a compilation unit.
+ *
+ * The value is the first token in the file, or the special end-of-file marker
+ * at the end of the stream if the file does not contain any tokens.
+ *
+ * The result is only available for targets representing a Dart compilation unit.
+ */
+final ResultDescriptor<Token> TOKEN_STREAM =
+    new ResultDescriptor<Token>('TOKEN_STREAM');