Switch transformers over to source_span

pkg/polymer/lib/src/build/import_inliner.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 inlines polymer-element definitions from html imports.
 library polymer.src.build.import_inliner;
 
 import 'dart:async';
 import 'dart:convert';
 
 import 'package:analyzer/analyzer.dart';
 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:html5lib/dom.dart' show
     Document, DocumentFragment, Element, Node;
 import 'package:html5lib/dom_parsing.dart' show TreeVisitor;
 import 'package:source_maps/refactor.dart' show TextEditTransaction;
-import 'package:source_maps/span.dart';
+import 'package:source_span/source_span.dart';
 
 import 'common.dart';
 
 // TODO(sigmund): move to web_components package (dartbug.com/18037).
 class _HtmlInliner extends PolymerTransformer {
   final TransformOptions options;
   final Transform transform;
   final TransformLogger logger;
   final AssetId docId;
   final seen = new Set<AssetId>();
@@ skipping 337 matching lines @@
   static final _QUOTE = new RegExp('["\']', multiLine: true);
   static final _BINDINGS = new RegExp(r'({{)|(\[\[)');
 
   /// Visit the CSS text and replace any relative URLs so we can inline it.
   // Ported from:
   // https://github.com/Polymer/vulcanize/blob/c14f63696797cda18dc3d372b78aa3378acc691f/lib/vulcan.js#L149
   // TODO(jmesserly): use csslib here instead? Parsing with RegEx is sadness.
   // Maybe it's reliable enough for finding URLs in CSS? I'm not sure.
   String visitCss(String cssText) {
     var url = spanUrlFor(sourceId, transform);
-    var src = new SourceFile.text(url, cssText);
+    var src = new SourceFile(cssText, url: url);
     return cssText.replaceAllMapped(_URL, (match) {
       // Extract the URL, without any surrounding quotes.
       var span = src.span(match.start, match.end);
       var href = match[1].replaceAll(_QUOTE, '');
       href = _newUrl(href, span);
       return 'url($href)';
     });
   }
 
   String visitInlineDart(String code) {
     var unit = parseDirectives(code, suppressErrors: true);
-    var file = new SourceFile.text(spanUrlFor(sourceId, transform), code);
+    var file = new SourceFile(code, url: spanUrlFor(sourceId, transform));
     var output = new TextEditTransaction(code, file);
     var foundLibraryDirective = false;
     for (Directive directive in unit.directives) {
       if (directive is UriBasedDirective) {
         var uri = directive.uri.stringValue;
         var span = _getSpan(file, directive.uri);
 
         var id = uriToAssetId(sourceId, uri, transform.logger, span,
             errorOnAbsolute: false);
         if (id == null) continue;
@@ skipping 11 matching lines @@
     if (!foundLibraryDirective) {
       // Ensure all inline scripts also have a library name.
       var libName = _libraryNameFor(sourceId, _count++);
       output.edit(0, 0, "library $libName;\n");
     }
 
     if (!output.hasEdits) return code;
 
     // TODO(sigmund): emit source maps when barback supports it (see
     // dartbug.com/12340)
-    return (output.commit()..build(file.url)).text;
+    return (output.commit()..build(file.url.toString())).text;
   }
 
-  String _newUrl(String href, Span span) {
+  String _newUrl(String href, SourceSpan span) {
     // Uri.parse blows up on invalid characters (like {{). Encoding the uri
     // allows it to be parsed, which does the correct thing in the general case.
     // This uri not used to build the new uri, so it never needs to be decoded.
     var uri = Uri.parse(Uri.encodeFull(href));
     if (uri.isAbsolute) return href;
     if (!uri.scheme.isEmpty) return href;
     if (!uri.host.isEmpty) return href;
     if (uri.path.isEmpty) return href;  // Implies standalone ? or # in URI.
     if (path.isAbsolute(href)) return href;
 
@@ skipping 44 matching lines @@
 /// When inlining <link rel="stylesheet"> tags copy over all attributes to the
 /// style tag except these ones.
 const IGNORED_LINKED_STYLE_ATTRS =
     const ['charset', 'href', 'href-lang', 'rel', 'rev'];
 
 /// Global RegExp objects for validating generated library names.
 final INVALID_LIB_CHARS_REGEX = new RegExp('[^a-z0-9_]');
 final NUM_REGEX = new RegExp('[0-9]');
 
 _getSpan(SourceFile file, AstNode node) => file.span(node.offset, node.end);