Introduce boot.js: this finally makes it possible to load and run Todomvc

lib/src/emitters.dart

Index: lib/src/emitters.dart
diff --git a/lib/src/emitters.dart b/lib/src/emitters.dart
index 34d0d8686780a4d2537c7f7e9ba5c4c940c6866e..f587ab9f13c501418881e4e3c4c1221e60a4584a 100644
--- a/lib/src/emitters.dart
+++ b/lib/src/emitters.dart
@@ -248,6 +248,7 @@ CodePrinter generateBootstrapCode(
   var printer = new CodePrinter(0)
       ..addLine('library app_bootstrap;')
       ..addLine('')
+      ..addLine("import 'package:mdv/mdv.dart' as mdv;")
       ..addLine("import 'package:polymer/polymer.dart' as polymer;");
 
   if (userMainInfo.userCode != null) {
@@ -263,7 +264,8 @@ CodePrinter generateBootstrapCode(
 
   printer..addLine('')
       ..addLine('void main() {')
-      ..indent += 1;
+      ..indent += 1
+      ..addLine('mdv.initialize();');

[Jennifer Messerly, 2013/07/30 00:56:12]

remove this because initPolymer does it?

(shouldn't we be calling initPolymer even if compiling? One of my hopes in
moving towards a runtime system is we don't end up maintaining two code paths;
the compiler might do some preprocessing to consolidate HTML files, but
ultimately it all ends up int the same runtime Polymer system.)

[Siggi Cherem (dart-lang), 2013/07/30 23:32:04]

I changed it to do so, but we should talk more about it. My hope is that we can
reduce most uses of mirrors when we compile for deployment. This is one case
where we could potentially do that.

 
   if (userMainInfo.userCode != null) printer.addLine('userMain.main();');
 
@@ -360,6 +362,7 @@ void emitImports(DartCodeInfo codeInfo, LibraryInfo info, PathMapper pathMapper,
 }
 
 final shadowDomJS = new RegExp(r'shadowdom\..*\.js', caseSensitive: false);
+final bootJS = new RegExp(r'.*/polymer/boot.js', caseSensitive: false);
 
 /** Trim down the html for the main html page. */
 void transformMainHtml(Document document, FileInfo fileInfo,
@@ -381,8 +384,12 @@ void transformMainHtml(Document document, FileInfo fileInfo,
     }
     if (tag.attributes['type'] == 'application/dart') {
       tag.remove();
-    } else if (src != null && rewriteUrls) {
-      tag.attributes["src"] = pathMapper.transformUrl(filePath, src);
+    } else if (src != null) {
+      if (bootJS.hasMatch(src)) {
+        tag.remove();
+      } else if (rewriteUrls) {
+        tag.attributes["src"] = pathMapper.transformUrl(filePath, src);
+      }
     }
   }