Adding some asset-related utilities to code_transformers

pkg/polymer/lib/src/build/script_compactor.dart

 // Copyright (c) 2013, 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.
 
 /// Transfomer that combines multiple dart script tags into a single one.
 library polymer.src.build.script_compactor;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:html5lib/dom.dart' show Document, Element;
 import 'package:analyzer/src/generated/ast.dart';
 import 'package:barback/barback.dart';
+import 'package:code_transformers/assets.dart';
 import 'package:path/path.dart' as path;
 import 'package:source_maps/span.dart' show SourceFile;
 
 import 'import_inliner.dart' show ImportInliner; // just for docs.
 import 'common.dart';
 
 /// Combines Dart script tags into a single script tag, and creates a new Dart
 /// file that calls the main function of each of the original script tags.
 ///
 /// This transformer assumes that all script tags point to external files. To
@@ skipping 71 matching lines @@
           'ScriptCompactor transformer should run after running the '
           'InlineCodeExtractor', span: tag.sourceSpan);
         continue;
       }
       if (mainLibraryId != null) {
         logger.warning('unexpected script. Only one Dart script tag '
           'per document is allowed.', span: tag.sourceSpan);
         tag.remove();
         continue;
       }
-      mainLibraryId = resolve(docId, src, logger, tag.sourceSpan);
+      mainLibraryId = uriToAssetId(docId, src, logger, tag.sourceSpan);
       mainScriptTag = tag;
     }
   }
 
   /// Emits the main HTML and Dart bootstrap code for the application. If there
   /// were not Dart entry point files, then this simply emits the original HTML.
   Future _emitNewEntrypoint(_) {
     if (mainScriptTag == null) {
       // We didn't find any main library, nothing to do.
       transform.addOutput(transform.primaryInput);
@@ skipping 48 matching lines @@
   /// labeled with @initMethod.
   Future<List<_Initializer>> _initializersOf(AssetId dartLibrary) {
     var result = [];
     return transform.readInputAsString(dartLibrary).then((code) {
       var file = new SourceFile.text(_simpleUriForSource(dartLibrary), code);
       var unit = parseCompilationUnit(code);
 
       return Future.forEach(unit.directives, (directive) {
         // Include anything from parts.
         if (directive is PartDirective) {
-          var targetId = resolve(dartLibrary, directive.uri.stringValue,
+          var targetId = uriToAssetId(dartLibrary, directive.uri.stringValue,
               logger, _getSpan(file, directive));
           return _initializersOf(targetId).then(result.addAll);
         }
 
         // Similarly, include anything from exports except what's filtered by
         // the show/hide combinators.
         if (directive is ExportDirective) {
-          var targetId = resolve(dartLibrary, directive.uri.stringValue,
+          var targetId = uriToAssetId(dartLibrary, directive.uri.stringValue,
               logger, _getSpan(file, directive));
           return _initializersOf(targetId).then(
             (r) => _processExportDirective(directive, r, result));
         }
       }).then((_) {
         // Scan the code for classes and top-level functions.
         for (var node in unit.declarations) {
           if (node is ClassDeclaration) {
             _processClassDeclaration(node, result, file, logger);
           } else if (node is FunctionDeclaration &&
@@ skipping 97 matching lines @@
 }
 
 _getSpan(SourceFile file, AstNode node) => file.span(node.offset, node.end);
 
 const MAIN_HEADER = """
 library app_bootstrap;
 
 import 'package:polymer/polymer.dart';
 import 'package:smoke/static.dart' as smoke;
 """;