rename fasta.Token.value --> lexeme

tests/compiler/dart2js/scanner_test.dart

 // Copyright (c) 2012, 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.
 
 import "package:expect/expect.dart";
 import 'package:front_end/src/fasta/scanner.dart';
 import 'package:front_end/src/fasta/scanner/characters.dart';
 import 'package:front_end/src/fasta/scanner/precedence.dart';
 import 'dart:typed_data';
 
@@ skipping 56 matching lines @@
     0xc5,
     0xa3,
     0xc3,
     0xae,
     0xe1,
     0xbb,
     0x9d,
     0xc3,
     0xb1
   ]);
-  Expect.stringEquals("'Îñţérñåţîöñåļîžåţîờñ'", token.value);
+  Expect.stringEquals("'Îñţérñåţîöñåļîžåţîờñ'", token.lexeme);
 
   // Blueberry porridge in Danish: "blåbærgrød".
   token = scanUTF8([
     0x62,
     0x6c,
     0xc3,
     0xa5,
     0x62,
     0xc3,
     0xa6,
     0x72,
     0x67,
     0x72,
     0xc3,
     0xb8,
     0x64
   ]);
-  Expect.stringEquals("'blåbærgrød'", token.value);
+  Expect.stringEquals("'blåbærgrød'", token.lexeme);
 
   // "சிவா அணாமாைல", that is "Siva Annamalai" in Tamil.
   token = scanUTF8([
     0xe0,
     0xae,
     0x9a,
     0xe0,
     0xae,
     0xbf,
     0xe0,
@@ skipping 18 matching lines @@
     0xe0,
     0xae,
     0xbe,
     0xe0,
     0xaf,
     0x88,
     0xe0,
     0xae,
     0xb2
   ]);
-  Expect.stringEquals("'சிவா அணாமாைல'", token.value);
+  Expect.stringEquals("'சிவா அணாமாைல'", token.lexeme);
 
   // "िसवा अणामालै", that is "Siva Annamalai" in Devanagari.
   token = scanUTF8([
     0xe0,
     0xa4,
     0xbf,
     0xe0,
     0xa4,
     0xb8,
     0xe0,
@@ skipping 18 matching lines @@
     0xe0,
     0xa4,
     0xbe,
     0xe0,
     0xa4,
     0xb2,
     0xe0,
     0xa5,
     0x88
   ]);
-  Expect.stringEquals("'िसवा अणामालै'", token.value);
+  Expect.stringEquals("'िसवा अणामालै'", token.lexeme);
 
   if (!isRunningOnJavaScript()) {
     // DESERET CAPITAL LETTER BEE, unicode 0x10412(0xD801+0xDC12)
     // UTF-8: F0 90 90 92
     token = scanUTF8([0xf0, 0x90, 0x90, 0x92]);
-    Expect.stringEquals("'𐐒'", token.value);
+    Expect.stringEquals("'𐐒'", token.lexeme);
   } else {
     print('Skipping non-BMP character test');
   }
 
   // Regression test for issue 1761.
   // "#!"
   token = scan([0x23, 0x21]);
   Expect.equals(token.info, SCRIPT_INFO); // Treated as a comment.
 
   // Regression test for issue 1761.
@@ skipping 11 matching lines @@
     0x20,
     0x57,
     0x6f,
     0x72,
     0x6c,
     0x64,
     0x21
   ]);
   Expect.equals(token.info, SCRIPT_INFO); // Treated as a comment.
 }