Start unraveling circularities between analyzer and front_end/kernel.

pkg/analyzer/lib/src/fasta/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:analyzer/analyzer.dart';
 import 'package:analyzer/dart/ast/ast_factory.dart' show AstFactory;
 import 'package:analyzer/dart/ast/standard_ast_factory.dart' as standard;
 import 'package:analyzer/dart/ast/token.dart' as analyzer show Token;
 import 'package:analyzer/dart/element/element.dart' show Element;
-import '../parser/parser.dart' show FormalParameterType;
-import '../scanner/token.dart' show BeginGroupToken, Token;
+import 'package:front_end/src/fasta/parser/parser.dart' show FormalParameterType;
+import 'package:front_end/src/fasta/scanner/token.dart' show BeginGroupToken, Token;
 
-import '../errors.dart' show internalError;
-import '../kernel/kernel_builder.dart'
+import 'package:front_end/src/fasta/errors.dart' show internalError;
+import 'package:front_end/src/fasta/kernel/kernel_builder.dart'
     show Builder, KernelLibraryBuilder, ProcedureBuilder;
-import '../parser/identifier_context.dart' show IdentifierContext;
-import '../quote.dart';
-import '../source/scope_listener.dart'
+import 'package:front_end/src/fasta/parser/identifier_context.dart' show IdentifierContext;
+import 'package:front_end/src/fasta/quote.dart';
+import 'package:front_end/src/fasta/source/scope_listener.dart'
     show JumpTargetKind, NullValue, Scope, ScopeListener;
 import 'analyzer.dart' show toKernel;
 import 'element_store.dart'
     show
         AnalyzerLocalVariableElemment,
         AnalyzerParameterElement,
         ElementStore,
         KernelClassElement;
 import 'token_utils.dart' show toAnalyzerToken, toAnalyzerCommentToken;
 
@@ skipping 1736 matching lines @@
       } else if (identical('static', s)) {
         staticKeyword = token;
       } else if (identical('var', s)) {
         finalConstOrVarKeyword = token;
       } else {
         internalError('Unhandled modifier: $s');
       }
     }
   }
 }