Implement handleQualified with 1 dot.

pkg/front_end/lib/src/fasta/analyzer/ast_builder.dart

 // Copyright (c) 2016, 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 fasta.analyzer.ast_builder;
 
 import 'package:front_end/src/fasta/scanner/token.dart'
     show BeginGroupToken, Token;
 
 import 'package:analyzer/analyzer.dart';
@@ skipping 439 matching lines @@
     for (int i = identifierCount - 1; i >= 0; i--) {
       SimpleIdentifier identifier = pop();
       components[i] = identifier.token;
     }
     push(ast.symbolLiteral(toAnalyzerToken(hashToken), components));
   }
 
   void endType(Token beginToken, Token endToken) {
     debugEvent("Type");
     TypeArgumentList arguments = pop();
-    SimpleIdentifier name = pop();
+    Identifier name = pop();
+    // TODO(paulberry,ahe): what if the type doesn't resolve to a class
+    // element?

[ahe, 2017/02/22 11:42:08]

We should try to share this method with BodyBuilder.

Here's how I handle errors there:

        push(const DynamicType());
        addCompileTimeError(beginToken.charOffset,
            "Can't be used as a type: '${debugName(prefix, suffix)}'.");
        return;

But it seems you can do slightly better by installing dynamic on the type name.

[Paul Berry, 2017/02/22 16:34:53]

Acknowledged.

     KernelClassElement cls = name.staticElement;
     if (cls == null) {
+      // TODO(paulberry): This is a kludge.  Ideally we should already have
+      // set the static element at the time that handleIdentifier was called.

[ahe, 2017/02/22 11:42:08]

For inspiration (or code sharing) take a look at
BodyBuilder.builderToFirstExpression.

[Paul Berry, 2017/02/22 16:34:53]

Acknowledged.

       Builder builder = scope.lookup(name.name, beginToken.charOffset, uri);
       if (builder == null) {
         internalError("Undefined name: $name");
       }
-      // TODO(paulberry,ahe): what if the type doesn't resolve to a class
-      // element?
       cls = elementStore[builder];
       assert(cls != null);
-      name.staticElement = cls;
+      if (name is SimpleIdentifier) {
+        name.staticElement = cls;
+      }
     }
     push(ast.typeName(name, arguments)..type = cls.rawType);
   }
 
   void handleAsOperator(Token operator, Token endToken) {
     debugEvent("AsOperator");
     TypeName type = pop();
     Expression expression = pop();
     push(ast.asExpression(expression, toAnalyzerToken(operator), type));
   }
@@ skipping 450 matching lines @@
     List<Annotation> metadata = pop();
     // TODO(paulberry): capture doc comments.  See dartbug.com/28851.
     Comment comment = null;
     push(ast.libraryDirective(comment, metadata,
         toAnalyzerToken(libraryKeyword), name, toAnalyzerToken(semicolon)));
     accumulateIdentifierComponents = false;
   }
 
   @override
   void handleQualified(Token period) {
+    SimpleIdentifier identifier = pop();
     if (accumulateIdentifierComponents) {
-      SimpleIdentifier identifier = pop();
       List<SimpleIdentifier> list = pop();
       list.add(identifier);
       push(list);
     } else {
-      // TODO(paulberry): implement.
-      logEvent('Qualified');
+      var prefix = pop();
+      if (prefix is SimpleIdentifier) {
+        // TODO(paulberry): resolve [identifier].

[ahe, 2017/02/22 11:42:08]

I'm using SendAccessor to handle this in BodyBuilder.

[Paul Berry, 2017/02/22 16:34:53]

Acknowledged.

+        push(ast.prefixedIdentifier(prefix, toAnalyzerToken(period), identifier));

[ahe, 2017/02/22 11:42:08]

Long line.

[Paul Berry, 2017/02/22 16:34:53]

Thanks.  Konstantin fixed this in https://codereview.chromium.org/2705333002.

+      } else {
+        // TODO(paulberry): implement.
+        logEvent('Qualified with >1 dot');
+      }
     }
   }
 
   @override
   void endPart(Token partKeyword, Token semicolon) {
     debugEvent("Part");
     StringLiteral uri = pop();
     List<Annotation> metadata = pop();
     // TODO(paulberry): capture doc comments.  See dartbug.com/28851.
     Comment comment = null;
@@ skipping 199 matching lines @@
 /// [ClassDeclaration] or [ClassTypeAlias] object.
 class _MixinApplication {
   final TypeName supertype;
 
   final Token withKeyword;
 
   final List<TypeName> mixinTypes;
 
   _MixinApplication(this.supertype, this.withKeyword, this.mixinTypes);
 }