Make SDK contexts visible on status page

pkg/analyzer/lib/src/generated/engine.dart

Index: pkg/analyzer/lib/src/generated/engine.dart
diff --git a/pkg/analyzer/lib/src/generated/engine.dart b/pkg/analyzer/lib/src/generated/engine.dart
index 706541ab2a3ec91a3b88907769e77d6efdef413a..abded102cd39d6c882b87c6d5933019ca80d878d 100644
--- a/pkg/analyzer/lib/src/generated/engine.dart
+++ b/pkg/analyzer/lib/src/generated/engine.dart
@@ -86,6 +86,12 @@ abstract class AnalysisContext {
   static const List<AnalysisContext> EMPTY_LIST = const <AnalysisContext>[];
 
   /**
+   * The file resolver provider used to override the way file URI's are
+   * resolved in some contexts.
+   */
+  ResolverProvider fileResolverProvider;
+
+  /**
    * Return the set of analysis options controlling the behavior of this
    * context. Clients should not modify the returned set of options. The options
    * should only be set by invoking the method [setAnalysisOptions].
@@ -333,12 +339,6 @@ abstract class AnalysisContext {
   bool exists(Source source);
 
   /**
-   * The file resolver provider used to override the way file URI's are
-   * resolved in some contexts.
-   */
-  ResolverProvider fileResolverProvider;
-
-  /**
    * Return the element model corresponding to the compilation unit defined by
    * the given [unitSource] in the library defined by the given [librarySource],
    * or `null` if the element model does not currently exist or if the library
@@ -1095,6 +1095,14 @@ abstract class AnalysisOptions {
   bool get enableTiming;
 
   /**
+   * A flag indicating whether finer grained dependencies should be used
+   * instead of just source level dependencies.
+   *
+   * This option is experimental and subject to change.
+   */
+  bool get finerGrainedInvalidation;
+
+  /**
    * Return `true` if errors, warnings and hints should be generated for sources
    * that are implicitly being analyzed. The default value is `true`.
    */
@@ -1153,14 +1161,6 @@ abstract class AnalysisOptions {
   bool get trackCacheDependencies;
 
   /**
-   * A flag indicating whether finer grained dependencies should be used
-   * instead of just source level dependencies.
-   *
-   * This option is experimental and subject to change.
-   */
-  bool get finerGrainedInvalidation;
-
-  /**
    * Return an integer encoding of the values of the options that need to be the
    * same across all of the contexts associated with partitions that are to be
    * shared by a single analysis context.
@@ -1426,6 +1426,48 @@ class AnalysisOptionsImpl implements AnalysisOptions {
   }
 
   /**
+   * Produce a human readable list of option names corresponding to the options
+   * encoded in the given [encoding], presumably from invoking the method
+   * [encodeCrossContextOptions].
+   */
+  static String decodeCrossContextOptions(int encoding) {
+    if (encoding == 0) {
+      return 'none';
+    }
+    StringBuffer buffer = new StringBuffer();
+    bool needsSeparator = false;
+    void add(String optionName) {
+      if (needsSeparator) {
+        buffer.write(', ');
+      }
+      buffer.write(optionName);
+      needsSeparator = true;
+    }
+    if (encoding & ENABLE_ASSERT_FLAG > 0) {
+      add('assert');
+    }
+    if (encoding & ENABLE_ASYNC_FLAG > 0) {
+      add('async');
+    }
+    if (encoding & ENABLE_GENERIC_METHODS_FLAG > 0) {
+      add('genericMethods');
+    }
+    if (encoding & ENABLE_STRICT_CALL_CHECKS_FLAG > 0) {
+      add('strictCallChecks');
+    }
+    if (encoding & ENABLE_STRONG_MODE_FLAG > 0) {
+      add('strongMode');
+    }
+    if (encoding & ENABLE_STRONG_MODE_HINTS_FLAG > 0) {
+      add('strongModeHints');
+    }
+    if (encoding & ENABLE_SUPER_MIXINS_FLAG > 0) {
+      add('superMixins');
+    }
+    return buffer.toString();
+  }
+
+  /**
    * Predicate used for [analyzeFunctionBodiesPredicate] when
    * [analyzeFunctionBodies] is set to `true`.
    */