Remove code that requires whole-program compile

lib/src/utils.dart

 // Copyright (c) 2015, 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.
 
 /// Holds a couple utility functions used at various places in the system.
 
 import 'dart:io';
 import 'package:path/path.dart' as path;
 import 'package:analyzer/src/generated/ast.dart'
     show
         ImportDirective,
         ExportDirective,
         PartDirective,
         CompilationUnit,
         Identifier,
         AnnotatedNode,
         AstNode,
         Expression,
         SimpleIdentifier,
         MethodInvocation;
 import 'package:analyzer/src/generated/constant.dart' show DartObject;
 import 'package:analyzer/src/generated/element.dart';
 import 'package:analyzer/src/generated/engine.dart' show AnalysisContext;
 import 'package:analyzer/src/generated/error.dart' show ErrorCode;
 import 'package:analyzer/src/task/dart.dart' show ParseDartTask;
 import 'package:analyzer/src/generated/resolver.dart' show TypeProvider;
 import 'package:analyzer/src/generated/source.dart' show LineInfo, Source;
 import 'package:analyzer/analyzer.dart' show parseDirectives;
-import 'package:crypto/crypto.dart' show CryptoUtils, MD5;
 import 'package:source_span/source_span.dart';
 
 import 'codegen/js_names.dart' show invalidVariableName;
 
 bool isDartPrivateLibrary(LibraryElement library) {
   var uri = library.source.uri;
   if (uri.scheme != "dart") return false;
   return Identifier.isPrivateName(uri.path);
 }
 
@@ skipping 249 matching lines @@
     new File(_path).writeAsStringSync('$_sb');
   }
 }
 
 SourceLocation locationForOffset(LineInfo lineInfo, Uri uri, int offset) {
   var loc = lineInfo.getLocation(offset);
   return new SourceLocation(offset,
       sourceUrl: uri, line: loc.lineNumber - 1, column: loc.columnNumber - 1);
 }
 
-/// Computes a hash for the given contents.
-String computeHash(String contents) {
-  if (contents == null || contents == '') return null;
-  return CryptoUtils.bytesToHex((new MD5()..add(contents.codeUnits)).close());
-}
-
-/// Computes a hash for the given file path (reads the contents in binary form).
-String computeHashFromFile(String filepath) {
-  var bytes = new File(filepath).readAsBytesSync();
-  return CryptoUtils.bytesToHex((new MD5()..add(bytes)).close());
-}
-
 String resourceOutputPath(Uri resourceUri, Uri entryUri, String runtimeDir) {
   if (resourceUri.scheme == 'package') return resourceUri.path;
 
   if (resourceUri.scheme != 'file') return null;
 
   var entryPath = entryUri.path;
   // The entry uri is either a directory or a dart/html file.  If the latter,
   // trim the file.
   var entryDir = entryPath.endsWith('.dart') || entryPath.endsWith('.html')
       ? path.dirname(entryPath)
@@ skipping 146 matching lines @@
   }
 
   void writeAsStringSync(String file, String contents) {
     _ensureParentExists(file);
     new File(file).writeAsStringSync(contents);
   }
 }
 
 DartType getStaticType(Expression e) =>
     e.staticType ?? DynamicTypeImpl.instance;