Replace ${name} with $name where possible.

pkg/analyzer/lib/src/generated/sdk_io.dart

 // Copyright (c) 2014, 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.
 
 // This code was auto-generated, is not intended to be edited, and is subject to
 // significant change. Please see the README file for more information.
 
 library engine.sdk.io;
 
 import 'java_core.dart';
@@ skipping 225 matching lines @@
   DirectoryBasedDartSdk(JavaFile sdkDirectory, [bool useDart2jsPaths = false]) {
     this._sdkDirectory = sdkDirectory.getAbsoluteFile();
     _libraryMap = initialLibraryMap(useDart2jsPaths);
   }
 
   @override
   Source fromFileUri(Uri uri) {
     JavaFile file = new JavaFile.fromUri(uri);
     String filePath = file.getAbsolutePath();
     String libPath = libraryDirectory.getAbsolutePath();
-    if (!filePath.startsWith("${libPath}${JavaFile.separator}")) {
+    if (!filePath.startsWith("$libPath${JavaFile.separator}")) {
       return null;
     }
     filePath = filePath.substring(libPath.length + 1);
     for (SdkLibrary library in _libraryMap.sdkLibraries) {
       String libraryPath = library.path;
       if (filePath.replaceAll('\\', '/') == libraryPath) {
         String path = library.shortName;
         try {
           return new FileBasedSource.con2(parseUriWithException(path), file);
         } on URISyntaxException catch (exception) {
-          AnalysisEngine.instance.logger.logInformation2("Failed to create URI: ${path}", exception);
+          AnalysisEngine.instance.logger.logInformation2("Failed to create URI: $path", exception);
           return null;
         }
       }
       libraryPath = new JavaFile(libraryPath).getParent();
-      if (filePath.startsWith("${libraryPath}${JavaFile.separator}")) {
+      if (filePath.startsWith("$libraryPath${JavaFile.separator}")) {
         String path = "${library.shortName}/${filePath.substring(libraryPath.length + 1)}";
         try {
           return new FileBasedSource.con2(parseUriWithException(path), file);
         } on URISyntaxException catch (exception) {
-          AnalysisEngine.instance.logger.logInformation2("Failed to create URI: ${path}", exception);
+          AnalysisEngine.instance.logger.logInformation2("Failed to create URI: $path", exception);
           return null;
         }
       }
     }
     return null;
   }
 
   @override
   AnalysisContext get context {
     if (_analysisContext == null) {
@@ skipping 84 matching lines @@
    * @param libraryName the name of the library associated with the documentation file to be
    *          returned
    * @return the auxiliary documentation file for the library
    */
   JavaFile getDocFileFor(String libraryName) {
     JavaFile dir = docDirectory;
     if (!dir.exists()) {
       return null;
     }
     JavaFile libDir = new JavaFile.relative(dir, libraryName);
-    JavaFile docFile = new JavaFile.relative(libDir, "${libraryName}${_DOC_FILE_SUFFIX}");
+    JavaFile docFile = new JavaFile.relative(libDir, "$libraryName$_DOC_FILE_SUFFIX");
     if (docFile.exists()) {
       return docFile;
     }
     return null;
   }
 
   /**
    * Return the directory within the SDK directory that contains the libraries.
    *
    * @return the directory that contains the libraries
@@ skipping 223 matching lines @@
     Parser parser = new Parser(source, errorListener);
     CompilationUnit unit = parser.parseCompilationUnit(scanner.tokenize());
     SdkLibrariesReader_LibraryBuilder libraryBuilder = new SdkLibrariesReader_LibraryBuilder(_useDart2jsPaths);
     // If any syntactic errors were found then don't try to visit the AST structure.
     if (!errorListener.errorReported) {
       unit.accept(libraryBuilder);
     }
     return libraryBuilder.librariesMap;
   }
 }