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pkg/front_end/lib/src/fasta/kernel/kernel_library_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.kernel_library_builder;
 
 import 'package:kernel/ast.dart';
 
 import 'package:kernel/clone.dart' show CloneVisitor;
 
 import '../errors.dart' show internalError;
 
 import '../loader.dart' show Loader;
 
 import '../modifier.dart' show abstractMask, staticMask;
 
 import '../source/source_library_builder.dart'
     show DeclarationBuilder, SourceLibraryBuilder;
 
 import '../source/source_class_builder.dart' show SourceClassBuilder;
 
 import '../util/relativize.dart' show relativizeUri;
 
 import 'kernel_builder.dart'
     show
         Builder,
+        BuiltinTypeBuilder,
         ClassBuilder,
         ConstructorReferenceBuilder,
         DynamicTypeBuilder,
         FormalParameterBuilder,
         FunctionTypeAliasBuilder,
         KernelConstructorBuilder,
         KernelEnumBuilder,
         KernelFieldBuilder,
         KernelFormalParameterBuilder,
         KernelFunctionTypeAliasBuilder,
@@ skipping 270 matching lines @@
       library.addMember(builder.build(this)..isStatic = true);
     } else if (builder is KernelProcedureBuilder) {
       library.addMember(builder.build(this)..isStatic = true);
     } else if (builder is FunctionTypeAliasBuilder) {
       // Kernel discard typedefs and use their corresponding function types
       // directly.
     } else if (builder is KernelEnumBuilder) {
       library.addClass(builder.build(this));
     } else if (builder is PrefixBuilder) {
       // Ignored. Kernel doesn't represent prefixes.
+    } else if (builder is BuiltinTypeBuilder) {
+      // Nothing needed.
     } else {
       internalError("Unhandled builder: ${builder.runtimeType}");
     }
   }
 
   Library build() {
     super.build();
     library.name = name;
     return library;
   }
@@ skipping 100 matching lines @@
   }
 }
 
 bool isConstructorName(String name, String className) {
   if (name.startsWith(className)) {
     if (name.length == className.length) return true;
     if (name.startsWith(".", className.length)) return true;
   }
   return false;
 }