Infer types of double literals.

pkg/front_end/lib/src/fasta/kernel/body_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.body_builder;
 
 import '../fasta_codes.dart'
     show FastaMessage, codeExpectedButGot, codeExpectedFunctionBody;
 
 import '../parser/parser.dart' show FormalParameterType, optional;
@@ skipping 1286 matching lines @@
   void handleLiteralBool(Token token) {
     debugEvent("LiteralBool");
     bool value = optional("true", token);
     assert(value || optional("false", token));
     push(new BoolLiteral(value)..fileOffset = token.charOffset);
   }
 
   @override
   void handleLiteralDouble(Token token) {
     debugEvent("LiteralDouble");
-    push(new DoubleLiteral(double.parse(token.lexeme))
-      ..fileOffset = token.charOffset);
+    push(astFactory.doubleLiteral(double.parse(token.lexeme), token));
   }
 
   @override
   void handleLiteralNull(Token token) {
     debugEvent("LiteralNull");
     push(new NullLiteral()..fileOffset = token.charOffset);
   }
 
   @override
   void handleLiteralMap(
@@ skipping 1810 matching lines @@
   } else if (node is PrefixBuilder) {
     return node.name;
   } else if (node is ThisAccessor) {
     return node.isSuper ? "super" : "this";
   } else if (node is FastaAccessor) {
     return node.plainNameForRead;
   } else {
     return internalError("Unhandled: ${node.runtimeType}");
   }
 }